Lens assembly device and assembly method thereof

Abstract

This invention discloses a lens assembly device and method, relating to the field of lens assembly technology. The lens assembly device includes a magnetic pen and a driving component. The magnetic pen is equipped with a first electromagnetic component, which, when energized, attracts a first magnetic component of the lens mount. The lens mount is used to install a lens. The driving component drives the magnetic pen to move and insert it into the lens barrel during its movement stroke, so that the lens mount attracted by the magnetic pen when energized is installed inside the lens barrel. During the process of assembling the lens mount with the lens installed inside the lens barrel, the attraction force applied by the magnetic pen to the lens mount acts entirely on the lens mount without contacting the lens, achieving full non-contact protection of the lens. This helps reduce the risk of lens surface contamination, marks, or scratches, and helps ensure that the optical surface of the lens is clean and undamaged.

Description

Technical Field

[0001] This invention relates to the field of lens assembly technology, and in particular to a lens assembly device and assembly method thereof. Background Technology

[0002] With the development of optical processing and inspection technology, the optical imaging lenses and illumination lenses in high-precision inspection equipment have increasingly higher requirements for the surface cleanliness and surface defects of optical lenses. Therefore, the way the lenses are handled during the assembly process into the lens barrel has become an important issue that needs to be considered in terms of cleanliness assurance and control of the introduction of lens damage.

[0003] In related technologies, lens assembly mainly relies on operators using suction cups to pick up lenses or using tweezers to place lenses into the lens barrel. The suction cup method involves the suction cup directly contacting the lens surface, which leaves suction cup marks that are difficult to remove. Furthermore, when the suction cup material is hard, it may scratch the lens surface due to excessive suction. If the tweezers are not handled properly, they can easily scratch the lens surface. Summary of the Invention

[0004] The main objective of this invention is to provide a lens assembly device and assembly method that aims to reduce the risk of lens surface contamination, marks, or scratches.

[0005] To achieve the above objectives, the present invention proposes a lens assembly device comprising: a magnetic pen and a driving component. The magnetic pen is equipped with a first electromagnetic component, which, when energized, is used to attract a first magnetic component of a lens mount. The lens mount is used to mount a lens. The driving component is used to drive the magnetic pen to move and, during its movement stroke, can insert it into the lens barrel, so that the lens mount attracted by the magnetic pen in the energized state is installed inside the lens barrel.

[0006] In one embodiment, the magnetic pen includes: a pen barrel and a pen tip, the pen barrel being connected to the driving member; the pen tip having a first end and a second end disposed opposite to each other, a first electromagnetic element being embedded in the first end, and the second end being detachably connected to the pen barrel; wherein, the pen barrel is further provided with a first terminal electrically connected to a power source, the second end being provided with a second terminal electrically connected to the first electromagnetic element, and the first terminal and the second terminal are at least partially disposed opposite to each other.

[0007] In one embodiment, the second end is provided with a second magnetic attractor, and the pen barrel is provided with a second electromagnetic attractor. The second electromagnetic attractor is used to attract the second magnetic attractor when energized, so that the second end is detachably connected to the pen barrel.

[0008] In one embodiment, the lens assembly device further includes: a first platform, a second platform, and a third platform, wherein the first platform is used to place the lens barrel; the second platform is used to place various types of lens mounts; and the third platform is used to place various types of pen tips; wherein the various types of lens mounts correspond one-to-one with the various types of pen tips.

[0009] In one embodiment, the lens assembly device further includes a visual inspection component and a controller. The visual inspection component is used to acquire visual images of the lens barrel on the first platform, the lens mount on the second platform, and the pen tip on the third platform. The controller determines the model and position of the lens barrel, pen tip, and lens mount based on the visual images of the lens barrel, pen tip, and lens mount, and determines the corresponding lens mount model and pen tip model based on the identified lens barrel model.

[0010] In one embodiment, the second end has a clearance groove extending along the axial direction of the pen tip.

[0011] In one embodiment, the pen tip is made of plastic.

[0012] In one embodiment, the first magnetic element is made of a soft magnetic material, and there are multiple first magnetic elements, which are evenly spaced around the axis of the mirror base.

[0013] The present invention also proposes an assembly method for a lens assembly device, wherein the lens assembly device is the lens assembly device described above, and the assembly method includes: after the lens is installed onto the lens mount and the pen tip is assembled onto the pen barrel, controlling the first electromagnetic component of the magnetic pen to be energized to attract the lens mount; controlling the driving component to drive the magnetic pen to move, so that the magnetic pen drives the lens mount to move and insert into the lens barrel; controlling the first electromagnetic component to be de-energized, and controlling the driving component to drive the magnetic pen to move out of the lens barrel.

[0014] In one embodiment, before the first electromagnetic component controlling the magnetic pen is energized, the assembly method further includes: acquiring a visual image of the lens barrel; determining the model information and position information of the lens barrel based on the visual image; determining the corresponding lens mount model and pen tip model based on the model information of the lens barrel; and controlling the pen barrel to move to connect with the pen tip corresponding to the model information of the lens barrel.

[0015] In the technical solution provided by the present invention, the first electromagnetic component of the magnetic pen is used to attract the first magnetic component of the lens mount when the lens mount is energized. During the process of assembling the lens mount with the lens installed into the lens barrel, the magnetic pen applies an attraction force to the lens mount, which is entirely applied to the lens mount and does not contact the lens. This achieves full non-contact protection for the lens, thereby reducing the risk of lens surface contamination, marks or scratches, and ensuring that the optical surface of the lens is clean and undamaged. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a structure of an embodiment of the lens assembly device provided by the present invention;

[0018] Figure 2 for Figure 1 Cross-sectional view of the central lens mount and lens;

[0019] Figure 3 for Figure 1 A three-dimensional view of the pen tip and the first electromagnetic component;

[0020] Figure 4 for Figure 1 Top view of the central mirror mount;

[0021] Figure 5 for Figure 1 A flowchart of the assembly method for the lens assembly device.

[0022] Explanation of icon numbers:

[0023] 10. Lens assembly device;

[0024] 1. Magnetic pen; 11. Pen barrel; 12. Pen tip; 121. First end; 122. Second end; 1221. Clearance groove; 13. First electromagnetic component;

[0025] 2. Drive unit; 3. First storage platform; 4. Second storage platform; 5. Third storage platform; 6. Vision inspection component; 7. Controller;

[0026] 20. Lens base; 201. First magnetic chuck; 30. Lens lens; 40. Lens barrel.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] The present invention proposes a lens assembly device 10.

[0032] Please see Figures 1-4 In one embodiment of the present invention, the lens assembly device 10 includes a magnetic pen 1 and a driving member 2. The magnetic pen 1 is provided with a first electromagnetic element 13. When the first electromagnetic element 13 is energized, it is used to attract the first magnetic element 201 of the lens mount 20. The lens mount 20 is used to install the lens 30. The driving member 2 is used to drive the magnetic pen 1 to move and can be inserted into the lens barrel 40 during its movement stroke, so that the lens mount 20 attracted by the magnetic pen 1 when energized is installed into the lens barrel 40.

[0033] It is understood that the lens assembly device 10 can be used to assemble lenses, specifically to assemble the lens mount 20 with the lens 30 installed into the lens barrel 40. The lens assembly device 10 can avoid direct contact between the suction cup or tweezers and the lens 30, effectively preventing lens contamination, marks or scratches, and ensuring that the optical surface is clean and undamaged.

[0034] Specifically, during lens assembly, the lens 30 is first installed onto the lens mount 20. Then, the driving unit 2 drives the magnetic pen 1 to move above the lens mount 20 and energizes the first electromagnetic component 13, causing the first electromagnetic component 13 to generate magnetism. The magnetic first electromagnetic component 13 can attract the first magnetic component 201 of the lens mount 20, so that the lens mount 20 and the lens 30 are connected as a whole to the magnetic pen 1. Next, the driving unit 2 can drive the magnetic pen 1 to insert into the lens barrel 40, so that the lens mount 20 attracted by the magnetic pen 1 is installed into the lens barrel 40, thus realizing the assembly of the lens. During the process of assembling the lens mount 20 with the lens 30 installed into the lens barrel 40, the attraction force applied by the magnetic pen 1 to the lens mount 20 is completely applied to the lens mount 20 and does not contact the lens 30, thus achieving full non-contact protection for the lens 30. This helps to reduce the risk of lens surface contamination, marks or scratches on the lens 30 and helps to ensure that the optical surface of the lens 30 is clean and undamaged.

[0035] The drive component 2 can be constructed as a multi-degree-of-freedom precision robotic arm structure, or it can be constructed as a gantry three-axis structure; there is no limitation on this.

[0036] In the technical solution provided by the present invention, the first electromagnetic component 13 of the magnetic pen 1 is used to attract the first magnetic component 201 of the lens mount 20 when it is energized. So that during the process of assembling the lens mount 20 with the lens 30 installed into the lens barrel 40, the attraction force applied by the magnetic pen 1 to the lens mount 20 is completely applied to the lens mount 20 and does not contact the lens 30, thereby achieving full non-contact protection for the lens 30. This helps to reduce the risk of mirror surface contamination, marks or scratches on the lens 30 and helps to ensure that the optical surface of the lens 30 is clean and undamaged.

[0037] In an embodiment of the present invention, please refer to Figure 1 The magnetic pen 1 includes a pen barrel 11 and a pen tip 12. The pen barrel 11 is connected to a driving member 2. The pen tip 12 has a first end 121 and a second end 122 that are disposed opposite to each other. A first electromagnetic member 13 is embedded in the first end 121. The second end 122 is detachably connected to the pen barrel 11. The pen barrel 11 is also provided with a first terminal that is electrically connected to a power source. The second end 122 is provided with a second terminal that is electrically connected to the first electromagnetic member 13. The first terminal and the second terminal are at least partially disposed opposite to each other.

[0038] It is understandable that different models of lens barrel 40 may be compatible with different models of lens mount 20. The second end 122 is detachably connected to the pen barrel 11, which enables the replacement of the pen tip 12. By changing the model of the pen tip 12, the model of the lens mount 20 compatible with the lens barrel 40 can be matched to meet the adsorption requirements of the lens mount 20 when assembling different models of lenses, thereby improving the versatility of the lens assembly device 10.

[0039] The pen barrel 11 is provided with a first terminal that is electrically connected to the power supply, and the second end 122 is provided with a second terminal that is electrically connected to the first electromagnetic component 13. The first terminal and the second terminal are at least partially opposite to each other. When the second end 122 of the pen tip 12 is connected to the pen barrel 11, the first terminal and the second terminal automatically contact each other, realizing automatic circuit conduction, so that the first electromagnetic component 13 is electrically connected to the power supply through the second terminal and the first terminal.

[0040] In an embodiment of the present invention, the second end 122 is provided with a second magnetic attractor, and the pen barrel 11 is provided with a second electromagnetic attractor. The second electromagnetic attractor is used to attract the second magnetic attractor when energized, so that the second end 122 and the pen barrel 11 are detachably connected.

[0041] Understandably, when disassembling the pen tip 12, the second electromagnetic component can be de-energized, causing the attraction between the second magnetic component and the second electromagnetic component to disappear. The pen tip 12 can be easily removed from the pen barrel 11 without the need for additional tools such as screwdrivers. When installing a new pen tip 12, the second end 122 of the pen tip 12 is aligned with the corresponding position on the pen barrel 11, and the second electromagnetic component is energized. The second electromagnetic component generates a magnetic force to attract the second magnetic component, enabling the pen tip 12 and pen barrel 11 to achieve precise docking and maintain a stable connection. This ensures the connection strength between the pen tip 12 and pen barrel 11 and avoids wear problems that may be caused by threaded connections, which helps to extend the service life of the magnetic pen 1. Furthermore, the disassembly and installation of the pen tip 12 is simple, which helps to improve the convenience of changing the pen tip 12 model, thereby improving the operational convenience during lens assembly.

[0042] In some other embodiments of the present invention, the second end 122 is provided with a slot, and the pen barrel 11 is provided with a buckle. The buckle is adapted to be inserted into the slot and engage with the slot so that the second end 122 is engaged with the pen barrel 11, thereby realizing a detachable connection between the second end 122 and the pen barrel 11. The structure is simple and easy to implement.

[0043] In an embodiment of the present invention, please refer to Figure 1 The lens assembly device 10 also includes a first platform 3, a second platform 4 and a third platform 5. The first platform 3 is used to place the lens barrel 40, the second platform 4 is used to place various types of lens mounts 20, and the third platform 5 is used to place various types of pen tips 12. The various types of lens mounts 20 correspond one-to-one with the various types of pen tips 12.

[0044] Understandably, the first shelf 3, the second shelf 4, and the third shelf 5 are respectively used to place the lens barrel 40, various types of lens mounts 20, and various types of pen tips 12. This allows for the classified storage of various components required for lens assembly, making it easier to access the corresponding components, which helps to shorten the assembly time and improve assembly efficiency.

[0045] In an embodiment of the present invention, please refer to Figure 1 The lens assembly device 10 also includes a vision detection component 6 and a controller 7. The vision detection component 6 is used to acquire visual images of the lens barrel 40 on the first stage 3, the lens mount 20 on the second stage 4, and the pen tip 12 on the third stage 5. The controller 7 determines the model and position of the lens barrel 40, pen tip 12, and lens mount 20 based on the visual images of the lens barrel 40, pen tip 12, and lens mount 20, and determines the corresponding model of the lens mount 20 and pen tip 12 based on the identified model of the lens barrel 40. It controls the pen lever 11 to connect to the pen tip 12 corresponding to the model of the lens barrel 40, and controls the pen tip 12 to attach to the lens mount 20 corresponding to the model of the lens barrel 40. The controller 7 can determine the model of the lens barrel 40, pen tip 12, and lens mount 20 based on their dimensions, which can be the diameter.

[0046] Understandably, by acquiring visual images of the lens barrel 40, pen tip 12, and lens mount 20 through the visual inspection component 6, and analyzing and identifying them through the controller 7, a model correspondence can be established between the lens barrel 40, lens mount 20, and pen tip 12. Once the model of the lens barrel 40 is identified, the system can automatically determine the corresponding model of the lens mount 20 and pen tip 12, and automatically determine their positions. This allows for precise installation of the pen tip 12 corresponding to the lens barrel 40 onto the pen holder 11 and precise control of the pen tip 12 to adhere to the lens mount 20 corresponding to the lens barrel 40. This effectively avoids errors that may occur with manual selection, thereby improving the accuracy and efficiency of lens assembly.

[0047] The vision inspection component 6 can be located on the drive component 2. The vision component can also be fixed above the workstation consisting of the pen tip 12 on the first worktable 3, the second worktable 4, and the third worktable 5 via a bracket. The vision inspection component 6 can include a camera and a light source. The camera is used to capture visual images of the lens barrel 40, pen tip 12, and lens base 20 on the workstation. The light source is used to illuminate the lens barrel 40, pen tip 12, and lens base 20 on the workstation so that the camera can clearly capture visual images of the lens barrel 40, pen tip 12, and lens base 20. This helps the controller 7 to accurately identify the model and position of the lens barrel 40, pen tip 12, and lens base 20, effectively reducing the risk of assembly errors and improving the accuracy and efficiency of lens assembly.

[0048] In this embodiment, please refer to Figure 1The pen tip 12 has a second magnetic component at its second end 122 and a second electromagnetic component at its pen barrel 11. The second electromagnetic component is used to attract the second magnetic component when energized, so that the second end 122 is detachably connected to the pen barrel 11. After the controller 7 determines the model of the pen tip 12 and the model of the lens base 20 corresponding to the lens barrel 40, the controller 7 can control the drive component 2 to drive the pen barrel 11 to the position of the pen tip 12 on the third platform 5, and control the second electromagnetic component to be energized so that the pen barrel 11 attracts the pen tip 12. Subsequently, the controller 7 can control the drive component 2 to move the magnetic pen 1 composed of the pen barrel 11 and the pen tip 12 to the position of the lens base 20 on the second platform 4, accurately attracting the corresponding lens base 20. The whole process does not require manual intervention and has high precision, which is conducive to improving assembly efficiency.

[0049] When the lens assembly device 10 assembles a lens and then proceeds to assemble the next lens of a different model, after the controller 7 determines the model of the pen tip 12 and the model of the lens mount 20 corresponding to the lens barrel 40, the pen tip 12 used to attach the lens mount 20 of the previous lens may still be attached to the pen barrel 11. The controller 7 can first control the drive unit 2 to move the pen barrel 11 to the empty space (the position where the pen tip 12 is not placed) on the third platform 5. Then, the controller 7 controls the second electromagnetic component to de-energize, so that the pen tip 12 is placed on the third platform 5. Finally, the controller 7 controls the drive unit 2 to move the pen barrel 11 to the position where the lens needs to be assembled. Above the pen tip 12 corresponding to the lens barrel 40, the controller 7 controls the second electromagnetic component to be energized so that the pen barrel 11 can attract the pen tip 12, thereby realizing the automatic replacement of the pen tip 12. Then, the controller 7 controls the drive component 2 to drive the magnetic pen 1, which consists of the pen barrel 11 and the pen tip 12, to move to the position of the lens mount 20 corresponding to the second platform 4, accurately attracting the corresponding lens mount 20. Then, the controller 7 drives the drive component 2 to insert the magnetic pen 1 into the lens barrel 40 so that the lens mount 20 is installed inside the lens barrel 40, realizing the full automation of lens assembly, reducing labor costs, reducing the risk of assembly errors, and improving assembly efficiency.

[0050] In an embodiment of the present invention, please refer to Figure 3 The second end 122 is provided with a relief groove 1221 extending along the axial direction of the pen tip 12. It can be understood that when at least a portion of the lens 30 protrudes outside the mounting groove of the lens holder 20 for mounting the lens 30, the risk of interference between the lens 30 and the second end 122 of the pen tip 12 can be reduced during the process of the pen tip 12 adsorbing the lens holder 20, thereby reducing the risk of contact between the lens 30 and the pen tip 12. This is beneficial to further reduce the risk of mirror contamination, marks or scratches on the lens 30, and to ensure that the optical surface of the lens 30 is clean and undamaged.

[0051] In an embodiment of the present invention, the pen tip 12 is made of plastic. Plastic materials have low hardness, which reduces the risk of scratching the lens 30 when the pen tip 12 comes into contact with the lens 30 mounted on the lens mount 20, thus helping to protect the optical performance of the lens 30. The pen tip 12 can be made of other non-magnetic, low-abrasion-rate plastic materials such as polytetrafluoroethylene (PTFE) or polycarbonate, which can effectively reduce the risk of scratching the lens 30.

[0052] In this embodiment, please refer to Figure 3 The first electromagnetic component 13 is embedded in the pen tip 12. The plastic pen tip 12 can serve as a protective layer to prevent the first electromagnetic component 13 from contacting the lens 30 installed on the lens base 20. This helps to reduce the risk of mirror contamination, marks or scratches on the lens 30 and helps to ensure that the optical surface of the lens 30 is clean and undamaged.

[0053] In an embodiment of the present invention, please refer to Figure 4 The first magnetic accumulator 201 is made of soft magnetic material, and there are multiple first magnetic accumulators 201, which are evenly spaced around the axis of the mirror base 20.

[0054] Understandably, the first magnetic chuck 201 is made of a soft magnetic material, which has the characteristic of being strongly attracted by a magnet. When the first electromagnetic component 13 is energized and attracts the first magnetic chuck 201, it facilitates the formation of a stable and efficient magnetic connection between the first magnetic chuck 201 and the first electromagnetic component 13. This improves the reliability of the connection between the mirror base 20 and the magnetic pen 1, reduces the risk of the mirror base 20 falling off during assembly, and allows the mirror base 20 to be smoothly installed into the mirror barrel 40. Simultaneously, the first magnetic chuck 201, made of a soft magnetic material, also has the characteristic of having very low residual magnetism after the external magnetic field disappears. After the mirror base 20 and the mirror barrel 40 are assembled, the first electromagnetic component 13 is de-energized, allowing the first electromagnetic component 13 and the first magnetic chuck 201 to separate quickly, enabling rapid release of the mirror base 20. The material of the first magnetic chuck 201 can be soft magnetic materials such as electrical pure iron or low-carbon steel.

[0055] Multiple first magnetic attractors 201 are provided, and the multiple first magnetic attractors 201 are evenly spaced around the axis of the mirror base 20. When the first electromagnetic component 13 is energized, it is beneficial for the magnetic force between the first magnetic attractor 201 and the first electromagnetic component 13 to be evenly distributed in the axial direction of the mirror base 20. This helps to improve the balance of force on the mirror base 20 during the magnetic attraction process, and can avoid problems such as mirror base 20 installation offset and tilting caused by local magnetic attraction force being too large or too small. This helps to improve the accuracy and stability of mirror base 20 assembly.

[0056] In an embodiment of the present invention, both the lens mount 20 and the corresponding pen tip 12 are constructed as columnar structures. The columnar structure formed by the pen tip 12 adsorbing the lens mount 20 and the lens barrel 40 can form a self-guided structure. When the lens mount 20 is installed into the lens barrel 40, the lens mount 20 can be accurately aligned and vertically inserted into the barrel, effectively preventing the lens mount 20 from tilting or getting stuck.

[0057] In the technical solution of the present invention, the lens assembly device 10 also includes a force sensor. The force sensor can be disposed between the driving member 2 and the magnetic pen 1. The force sensor can be electrically connected to the control unit. During the process of installing the lens mount 20 into the lens barrel 40, when the lens mount 20 is installed in place, when the controller 7 drives the magnetic pen 1 to continue to extend into the lens barrel 40, since the lens mount 20 is installed in place, the lens mount 20 and the magnetic pen 1 do not move. At this time, the driving member 2 will squeeze the magnetic pen 1, and the pressure detected by the force sensor will increase. When the controller 7 receives the signal of increased pressure, it can automatically determine that the lens mount 20 is installed in place. The controller 7 controls the first electromagnetic component 13 to be de-energized and controls the driving member 2 to drive the magnetic pen 1 to move out of the lens barrel 40, which can avoid damage to the lens mount 20.

[0058] In this embodiment, the lens holder 20 is constructed as a ring or frame structure for supporting and fixing a single lens 30. Its inner ring is used to place the lens 30. According to the actual placement direction of the lens 30 during assembly, a first magnetic attractor 201 that can be magnetically attracted is embedded in the upward-facing annular surface of the lens holder 20. Specifically, multiple mounting holes or slots are preset on the body of the lens holder 20 (made of non-magnetic materials such as aluminum alloy or stainless steel). The first magnetic attractor 201 (made of materials such as electrical pure iron or low carbon steel) is embedded in the mounting holes or slots. The first magnetic attractor 201 is symmetrically distributed around the lens holder 20 to ensure balanced force when picking up the lens and to prevent the lens 30 from tilting.

[0059] The controller 7 can integrate a current adjustment module, which can adjust the current of the first electromagnetic component 13 in real time through the controller 7 command, thereby adjusting the magnetic force of the first electromagnetic component 13, supporting the assembly requirements of lenses 30 of different sizes and weights. By adjusting the magnetic force through the current, the pen tip 12 can be quickly replaced. The vision system realizes positioning and process monitoring, greatly improving assembly consistency and efficiency, and is suitable for high clean environments and automated production lines.

[0060] The controller 7 has image processing, motion planning and process control functions. The controller 7 receives image information from the vision detection component 6, identifies the size, model and spatial posture of the currently assembled lens through the built-in algorithm, selects the appropriate pen tip 12 model accordingly, instructs the drive component 2 to perform the pen tip 12 replacement operation, calculates the required working current of the first electromagnetic component 13 to ensure that the adsorption force matches the weight of the lens assembly composed of the lens 30 and the lens base 20, and avoids unstable adsorption or over-adsorption. It generates the motion trajectory of the drive component 2 to guide the magnetic pen 1 to accurately position itself in the area of ​​the first magnetic component 201 of the lens base 20, and controls the picking, transferring and placing actions of the lens assembly.

[0061] In the technical solution of the present invention, the problems of optical surface contamination, scratches or marks caused by direct contact of lens 30 with tools such as suction cups and tweezers during lens assembly in related technologies can be solved. At the same time, the automatic identification and matching of different models of lens barrel 40 with corresponding lens mount 20 and pen tip 12 can be realized, thereby improving the accuracy, cleanliness and production efficiency of lens assembly and meeting the needs of large-scale and diversified lens production.

[0062] Please see Figure 5 The present invention also proposes an assembly method for a lens assembly device. The specific structure of the lens assembly device is as described in the above embodiments. Since this assembly method adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The assembly method includes:

[0063] Step S1: After the lens is installed onto the lens holder and the pen tip is assembled onto the pen barrel, the first electromagnetic component of the magnetic pen is energized to attract the lens holder.

[0064] The first electromagnetic component 13 of the magnetic pen 1 is energized to generate magnetism, and the magnetic first electromagnetic component 13 attracts the first magnetic component 201 of the lens base 20, so that the lens base 20 and the lens 30 are connected to the magnetic pen 1 as a whole.

[0065] Step S2: Control the drive unit to move the magnetic pen so that the magnetic pen moves the lens base and inserts it into the lens barrel.

[0066] The driving component 2 drives the magnetic pen 1 to move and insert the magnetic pen 1 into the lens barrel 40, thereby causing the magnetic pen 1 to drive the lens mount 20 to move and insert into the lens barrel 40, so that the lens mount 20 is installed inside the lens barrel 40, thus realizing the assembly of the lens.

[0067] Step S3: De-energize the first electromagnetic component and control the driving component to move the magnetic pen out of the lens barrel.

[0068] When the first electromagnetic component 13 is de-energized, its magnetism disappears, thereby eliminating the attraction between the first magnetic component 201 and the first electromagnetic component 13. This allows the lens mount 20 to separate from the magnetic pen 1. The driving component 2 drives the magnetic pen 1 to move out of the lens barrel 40. This reduces the risk of interference between the lens and the magnetic pen 1 when the assembled lens is removed from the first stage 3, thus facilitating the smooth removal of the lens.

[0069] Understandably, during the process of assembling the lens mount 20 with the lens 30 installed into the lens barrel 40, the magnetic pen 1 applies an adsorption force to the lens mount 20, which is entirely applied to the lens mount 20 and does not contact the lens 30. This achieves full non-contact protection for the lens 30, thereby reducing the risk of lens surface contamination, marks, or scratches, and ensuring that the optical surface of the lens 30 is clean and undamaged.

[0070] In an embodiment of the present invention, before energizing the first electromagnetic component of the magnetic pen, the assembly method further includes acquiring a visual image of the lens barrel, determining the model information and position information of the lens barrel based on the visual image, determining the corresponding lens mount model and pen tip model based on the model information of the lens barrel, and controlling the pen barrel to move to connect with the pen tip corresponding to the model information of the lens barrel.

[0071] The pen tip 12 has a second magnetic attachment at its second end 122 and a second electromagnetic attachment at its pen barrel 11. The second electromagnetic attachment is used to attract the second magnetic attachment when energized, so that the second end 122 is detachably connected to the pen barrel 11. After the controller 7 determines the model of the pen tip 12 and the model of the lens base 20 corresponding to the lens barrel 40, the controller 7 can control the drive unit 2 to drive the pen barrel 11 to the position of the pen tip 12 on the third platform 5, and control the second electromagnetic attachment to be energized so that the pen barrel 11 attracts the pen tip 12. Subsequently, the controller 7 can control the drive unit 2 to move the magnetic pen 1 composed of the pen barrel 11 and the pen tip 12 to the position of the lens base 20 on the second platform 4, accurately attracting the corresponding lens base 20. The whole process does not require manual intervention and has high precision, which is conducive to improving assembly efficiency.

[0072] Specifically, after the lens assembly device 10 has assembled one lens, when assembling the next lens of a different model, after the controller 7 determines the model of the pen tip 12 and the model of the lens mount 20 corresponding to the lens barrel 40, the pen tip 12 used to attach the lens mount 20 of the previous lens may still be attached to the pen barrel 11. The controller 7 can first control the drive unit 2 to drive the pen barrel 11 to the empty space (the position where the pen tip 12 is not placed) of the third platform 5. Then, the controller 7 controls the second electromagnetic component to de-energize, so that the pen tip 12 is placed on the third platform 5. Then, the controller 7 controls the drive unit 2 to drive the pen barrel 11 to the position where it needs to be assembled. Above the pen tip 12 corresponding to the lens barrel 40, the controller 7 controls the second electromagnetic component to be energized so that the pen barrel 11 can attract the pen tip 12, thereby realizing the automatic replacement of the pen tip 12. Then, the controller 7 controls the drive component 2 to drive the magnetic pen 1, which consists of the pen barrel 11 and the pen tip 12, to move to the position of the lens mount 20 corresponding to the second platform 4, accurately attracting the corresponding lens mount 20. Then, the controller 7 drives the drive component 2 to insert the magnetic pen 1 into the lens barrel 40 so that the lens mount 20 is installed inside the lens barrel 40, realizing the full automation of lens assembly, reducing labor costs, reducing the risk of assembly errors, and improving assembly efficiency.

[0073] In other embodiments of the present invention, the assembly method of the lens assembly device includes:

[0074] Step S11: Perform pre-assembly of the lens and lens mount. Precisely insert the lens into a special lens mount with an embedded first magnetic chuck, and fix it by pressure ring or adhesive to form a lens assembly.

[0075] Among them, the first magnetic suction component 201 is symmetrically arranged around the lens base 20. The material of the first magnetic suction component 201 is a soft magnetic material with low remanence (such as electrical pure iron) to ensure adsorption balance and easy release. The pre-assembled lens assembly is placed in the second storage area.

[0076] Step S12: Perform visual recognition and parameter setting. The visual inspection component takes pictures of the lens barrel and lens assembly to be assembled. The controller identifies the lens barrel model and lens mount model, and calls the preset assembly scheme accordingly. It determines the applicable pen tip model and current value, and drives the drive component to complete the replacement of the pen tip and parameter configuration.

[0077] Step S13: During the assembly process, magnetic pickup and transfer are performed. The drive unit holds the magnetic pen and positions it above the lens assembly. After the vision system assists in alignment, the controller controls the first electromagnetic component to be energized, generating a strong magnetic field to attract the lens mount. The magnetic force is uniformly applied to the symmetrical first magnetic component to ensure that the lens is grasped horizontally. The drive unit smoothly transfers the lens assembly to the top of the lens barrel.

[0078] Step S14: Using visual feedback, the controller controls the drive unit to vertically and centrally place the lens assembly into the predetermined position of the lens barrel. After confirming that it is in place, the controller controls the first electromagnetic component to be de-energized so that the magnetic force of the first electromagnetic component disappears and the magnetic pen separates from the lens base.

[0079] Step S15: Repeat the above steps and, according to the lens design, place each lens component in sequence until the entire lens assembly is completed. The controller can record the parameters of each step to achieve traceability and quality monitoring of the assembly process.

[0080] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A lens assembly device, characterized in that, include: A magnetic pen, wherein the magnetic pen is provided with a first electromagnetic component, which is used to attract a first magnetic component of a lens mount when energized, and the lens mount is used to install lenses; as well as, A driving component is provided to drive the magnetic pen to move and to be able to insert into the lens barrel during its movement stroke, so that the lens mount that the magnetic pen is attracted to in the energized state is installed into the lens barrel. The magnetic pen includes: The pen barrel, which is connected to the drive member; and, The pen tip has a first end and a second end that are disposed opposite to each other, the first electromagnetic component is embedded in the first end, and the second end is detachably connected to the pen barrel; The pen barrel is provided with a first terminal that is electrically connected to a power source, and the second end is provided with a second terminal that is electrically connected to the first electromagnetic component. The first terminal and the second terminal are at least partially opposite to each other. The lens assembly device also includes: A first shelf, used to place the mirror tube; A second shelf, used to hold various models of the aforementioned mirror mounts; and, The third shelf is used to hold various types of pen tips; Among them, the various models of the mirror base correspond one-to-one with the various models of the pen tip; The lens assembly device also includes: A visual detection component, wherein the visual detection component is used to acquire visual images of the lens barrel on the first stage, the lens mount on the second stage, and the pen tip on the third stage; and, The controller determines the model and position of each of the lens barrel, pen tip, and lens base based on visual images of the lens barrel, pen tip, and lens base, and determines the corresponding lens base model and pen tip model based on the identified lens barrel model.

2. The lens assembly apparatus as described in claim 1, characterized in that, The second end is provided with a second magnetic attraction element, and the pen barrel is provided with a second electromagnetic element. The second electromagnetic element is used to attract the second magnetic attraction element when energized, so that the second end is detachably connected to the pen barrel.

3. The lens assembly apparatus as described in claim 1, characterized in that, The second end has a clearance groove that extends along the axial direction of the pen tip.

4. The lens assembly apparatus as described in claim 1, characterized in that, The pen tip is made of plastic.

5. The lens assembly apparatus as described in claim 1, characterized in that, The first magnetic component is made of soft magnetic material, and there are multiple first magnetic components, which are evenly spaced around the axis of the mirror base.

6. A method for assembling a lens assembly device, characterized in that, The lens assembly device is the lens assembly device according to any one of claims 1 to 5, and the assembly method includes: After the lens is installed onto the lens mount and the pen tip is assembled onto the pen barrel, the first electromagnetic component of the magnetic pen is energized to attract the lens mount. The driving component is controlled to move the magnetic pen, so that the magnetic pen moves the lens base and inserts it into the lens barrel; The first electromagnetic component is de-energized, and the driving component is controlled to drive the magnetic pen to move out of the lens barrel.

7. The assembly method of the lens assembly apparatus as described in claim 6, characterized in that, Before the first electromagnetic component controlling the magnetic pen is energized, the assembly method further includes: Obtain a visual image of the lens barrel; The model information and location information of the lens barrel are determined based on the visual image; Determine the corresponding lens mount model and pen tip model based on the lens barrel model information; Control the pen barrel to move to connect with the pen tip corresponding to the model information of the lens barrel.

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