Dispensing and laminating apparatus and method for lenses

Abstract

The application provides a lens dispensing and laminating device and a dispensing and laminating method. The device is sequentially provided with a lens feeding device, a lens cleaning device, a dispensing and laminating device and a finished product discharging device. After the lens is fed by the lens feeding device, the lens is transferred to the lens cleaning device for surface cleaning. The lens cleaning device comprises a surface cleaning mechanism, a transfer mechanism and a storage platform. The transfer mechanism receives the fed lens, the lens is transferred to the surface cleaning mechanism by the transfer mechanism for surface cleaning, and the cleaned lens is sequentially transferred to the storage platform. The storage platform can accommodate multiple lenses. The lens on the storage platform is transferred to the dispensing and laminating device, and the dispensing and laminating device performs the laminating action of multiple lenses in sequence. The finished product discharging device discharges the laminated lens. The application automatically performs the dispensing and laminating of multiple layers of lenses, improves the production efficiency and laminating precision.

Description

Technical Field

[0001] This invention relates to the technical field of lamination equipment, and more specifically to a lens dispensing and lamination equipment and method. Background Technology

[0002] With the advent of the big data and 5G era, Augmented Reality (AR) is developing rapidly. AR is a technology that calculates the position and angle of a camera's influence in real time and adds corresponding images. Due to its ability to enhance the display output of the real environment, it is widely used. Smart AR glasses, as one of the important tools of AR technology, are particularly important. In the manufacturing process of AR glasses, AR lenses mostly use multi-layer lenses for dispensing and laminating. However, current technology lacks automated dispensing and laminating equipment for AR lenses, and most AR glasses are manufactured manually. This increases labor costs and results in low production efficiency and manufacturing precision, hindering the development of this technology. Summary of the Invention

[0003] Therefore, the present invention provides a lens dispensing and lamination device and a dispensing and lamination method to automatically perform the dispensing and lamination process of AR glasses, thereby improving production efficiency and assembly effect.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0005] A lens dispensing and stacking device includes a frame, on which a lens loading device, a lens cleaning device, a dispensing and stacking device, and a finished product unloading device are sequentially mounted. After being loaded by the lens loading device, the lenses are transferred to the lens cleaning device for surface cleaning. The lens cleaning device includes a surface cleaning mechanism, a transfer mechanism, and a storage platform. The transfer mechanism receives the loaded lenses and transfers them to the surface cleaning mechanism for surface cleaning. The cleaned lenses are then sequentially transferred to the storage platform, which can hold multiple lenses. The lenses on the storage platform are transferred to the dispensing and stacking device, where they are sequentially stacked. Finally, the finished product unloading device unloads the stacked lenses.

[0006] Furthermore, the lens cleaning mechanism includes a first surface cleaning mechanism, a sorting mechanism, and a second surface cleaning mechanism. The first surface cleaning mechanism and the sorting mechanism are located on the conveying path of the transfer mechanism, and the second surface cleaning mechanism is located below the sorting mechanism. The lens is transferred by the transfer mechanism to the first surface cleaning mechanism for cleaning the upper surface of the lens, and then passes through the sorting mechanism, where the sorting mechanism picks up the lens and the second surface cleaning mechanism below cleans the lower surface of the lens; finally, the storage platform is transferred to the sorting mechanism, where the sorting mechanism transfers the lens onto the storage platform.

[0007] Furthermore, the first surface cleaning mechanism includes a first USC cleaning component and a first AOI inspection component. The working end of the first USC cleaning component and the inspection end of the first AOI inspection component face downwards. The transfer mechanism passes through the first USC cleaning component and the first AOI inspection component in sequence. The first USC cleaning component cleans the upper surface of the lens, and the first AOI inspection component inspects the cleaning effect and surface shape defects of the upper surface of the lens.

[0008] Furthermore, the second surface cleaning mechanism includes a second USC cleaning component and a second AOI inspection component. The working end of the second USC cleaning component and the inspection end of the second AOI inspection component face upwards. The sorting mechanism picks up the lens and passes it sequentially through the second USC cleaning component and the second AOI inspection component. The second USC cleaning component cleans the lower surface of the lens, and the second AOI inspection component inspects the cleaning effect and surface shape defects of the lower surface of the lens.

[0009] Furthermore, the lens cleaning device also includes a first conveying mechanism, which is located between the lens loading device and the transfer mechanism to grab the lens located on the lens loading device and convey the lens.

[0010] Furthermore, the lens cleaning device also includes an alignment adjustment mechanism and a transfer mechanism. The alignment adjustment mechanism and the transfer mechanism are located at the beginning of the transfer mechanism. The lenses fed by the lens loading device are transferred to the alignment adjustment mechanism for alignment adjustment. Then, the transfer mechanism picks up the adjusted lenses and transfers them to the transfer mechanism.

[0011] Furthermore, the alignment adjustment mechanism includes an alignment CCD, a rotating platform, and a fixture disposed on the rotating platform. The fixture is used to place the lens. The alignment CCD is located above the rotating platform and facing the fixture. The alignment CCD takes a picture of the lens, and then the rotating platform drives the fixture to rotate to adjust the position and orientation of the lens located on the fixture.

[0012] Furthermore, the dispensing and laminating device includes a first bonding mechanism, a dispensing mechanism, and a second bonding mechanism. The first bonding mechanism is for placing lenses and is laterally movable. The dispensing mechanism and the second bonding mechanism are sequentially located on the moving path of the first bonding mechanism. The first bonding mechanism moves the first lens to the second bonding mechanism for pickup. The first bonding mechanism sequentially moves the remaining lenses to be laminated to the dispensing mechanism for dispensing and to the second bonding mechanism. The second bonding mechanism is driven to press down and adhere to the first bonding mechanism so that the lenses on the second bonding mechanism are aligned and laminated with the lenses on the first bonding mechanism. The second bonding mechanism picks up the laminated lenses and is driven to move upward.

[0013] Furthermore, the dispensing and bonding device also includes an upper shape alignment CCD mechanism and a lower shape alignment CCD mechanism. The upper shape alignment CCD mechanism is located between the dispensing mechanism and the second bonding mechanism to take alignment photos of the upper surface of the lens transferred by the first bonding mechanism. The lower shape alignment CCD mechanism is located below the second bonding mechanism and faces the second bonding mechanism to take alignment photos of the lower surface of the lens located in the second bonding mechanism.

[0014] The present invention also provides a dispensing and lamination method, characterized by comprising the following steps:

[0015] A1, providing the above-described lens dispensing and laminating equipment, providing multilayer lenses;

[0016] A2, clean the lenses one by one;

[0017] A3, apply adhesive to the remaining lenses that need to be stacked, except for the first lens;

[0018] A4, overlap the individual lens after applying adhesive with the lower surface of the previous lens.

[0019] The technical solution provided by this invention has the following beneficial effects:

[0020] This invention automates the loading, cleaning, dispensing, and unloading of lenses through a lens loading device, a lens cleaning device, a dispensing and stacking device, and a finished product unloading device. This high degree of automation improves stacking efficiency and accuracy. The lens cleaning device cleans each lens and places multiple lenses to be stacked sequentially on a storage platform, facilitating the subsequent dispensing and stacking process. The coordination between the lens cleaning device, the lens loading device, and the dispensing and stacking device ensures smooth operation and further guarantees stacking efficiency. Attached Figure Description

[0021] Figure 1 The diagram shown is a schematic representation of the lens dispensing and laminating device of the present invention.

[0022] Figure 2 The diagram shown is a schematic representation of the lens loading device of the present invention.

[0023] Figure 3 The diagram shown is a structural schematic of the lifting and material handling mechanism of the present invention.

[0024] Figure 4 The diagram shown is a schematic representation of the lens cleaning device of the present invention.

[0025] Figure 5 As shown Figure 4 A magnified view of a portion of the image;

[0026] Figure 6 The diagram shown is a schematic representation of the alignment adjustment mechanism of the present invention.

[0027] Figure 7 The diagram shown is a structural schematic of the first surface cleaning mechanism of the present invention;

[0028] Figure 8 The diagram shown is a structural schematic of the sorting mechanism of the present invention;

[0029] Figure 9 The diagram shown is a structural schematic of the second surface cleaning mechanism of the present invention;

[0030] Figure 10 The diagram shown is a structural schematic of the dispensing and bonding device of the present invention.

[0031] Figure 11 The diagram shown is a structural schematic of the dispensing mechanism of the present invention.

[0032] Figure 12 The diagram shown is a structural schematic of the second bonding mechanism of the present invention;

[0033] Figure 13 The diagram shown is a schematic of the finished product feeding device.

[0034] Label Explanation:

[0035] 10-Frame, 1-Lens loading device, 11-Lens buffer fixture, 111-Lens buffer basket, 12-Lifting and picking mechanism, 121-Lifting drive unit, 122-Horizontal transfer drive unit, 123-Picking platform;

[0036] 2-Lens cleaning device, 21-First conveying mechanism, 211-First drive transfer assembly, 212-Conveying robot, 22-Alignment adjustment mechanism, 221-Alignment CCD, 222-Rotating platform, 223-Jig, 23-Transfer mechanism, 24-Surface cleaning mechanism, 241-First surface cleaning mechanism, 2411-First USC cleaning assembly, 2412-First AOI detection assembly, 242-Sorting mechanism, 2421-Third drive transfer assembly, 2422-Pick-up assembly, 2423-Thickness measuring assembly, 2424-Cleaning roller, 243-Second surface cleaning mechanism, 2431-Second USC cleaning assembly, 2432-Second AOI detection assembly, 25-Transfer mechanism, 251-Second drive transfer assembly, 252-Receiving seat, 26-Storage platform;

[0037] 3-Dispensing and stacking device, 31-Second transport mechanism, 32-First bonding mechanism, 321-First lateral transfer drive assembly, 322-Lower bonding platform, 33-Dispensing mechanism, 331-Second lateral transfer drive assembly, 332-Dispensing assembly, 333-Height measuring assembly, 334-Glue width detection assembly, 34-Upper shape alignment CCD mechanism, 35-Second bonding mechanism, 351-Mounting bracket, 352-Upper bonding platform, 3521-Z-axis lifting drive assembly, 2522-Bonding fixture, 3523-Two-axis adjustment platform, 36-Lower shape alignment CCD mechanism, 37-UV curing mechanism, 371-Third lateral transfer drive assembly, 372-Unloading platform, 373-UV curing assembly;

[0038] 4-Finished product unloading device, 41-Unloading robot, 42-Discharge hopper, 421-Discharge tray lifting mechanism, 422-Pattern handling mechanism, 420-Discharge position. Detailed Implementation

[0039] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0040] Furthermore, the directions such as up, down, front, back, left, and right involved in this embodiment are only for reference and do not represent the actual orientation in application. Additionally, 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. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0041] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0042] See Figures 1 to 13 As shown, in a preferred embodiment of the present invention, a lens dispensing and laminating device is provided for automatically laminating at least two layers of lenses. The lens dispensing and laminating device includes a frame 10, on which a lens loading device 1, a lens cleaning device 2, a dispensing and laminating device 3, and a finished product unloading device 4 are sequentially mounted. All of the above mechanisms are coordinated through a processing system; that is, the lens loading device 1, lens cleaning device 2, dispensing and laminating device 3, and finished product unloading device 4 are all connected to the processing system. Specifically, the processing system is preferably a PLC processing system, which is widely used in the control of automated machines and is well-known and skillfully employed by those skilled in the art. For example, the product's position can be sensed by sensors placed at corresponding locations and output to the processing system; or the alignment CCD mechanism can transmit the information acquired by photography to the processing system, which processes it and outputs signals to control the dispensing and laminating device or other moving mechanisms, etc., which will not be elaborated upon here.

[0043] In this embodiment, see Figures 1 to 3As shown, the lens loading device 1 includes a lens buffer fixture 11 and a lifting and picking mechanism 12. The lens buffer fixture 11 includes at least two longitudinally arranged buffer zones, each of which can hold a lens buffer basket 111 containing a lens. In this embodiment, the lens buffer fixture 11 is provided with 5 buffer zones to ensure buffered loading of lenses and achieve non-stop operation of the device. In this embodiment, taking 5 lenses to be aligned and stacked as an example, the number of lens buffer fixtures 11 is set to 5, and each lens buffer fixture 11 is used for loading each layer of lenses to be stacked. Of course, in other embodiments, the lens buffer fixture 11 may vary depending on the actual number of lenses to be stacked, which is not limited herein. Each lens buffer fixture 11 is equipped with a lifting and picking mechanism 12, which is used to pull out the lens buffer baskets 111 of each column of the lens buffer fixture 11 for the first conveying mechanism 21 (see below) of the lens cleaning device 2 to transport the lenses. Specifically, the lifting and picking mechanism 12 includes a lifting drive unit 121, a lateral transfer drive unit 122, and a picking platform 123. The output end of the lifting drive unit 121 is connected to the picking platform 123 to drive the picking platform 123 to move up and down. The output end of the lateral transfer drive unit 122 is connected to the picking platform 123 to drive the picking platform 123 to move laterally. The picking platform 123 and the lens buffer basket 111 are provided with mutually engaging positioning posts and slots to allow the picking platform 123 to dock with one row of lens buffer baskets 111. Driven by the lateral transfer drive unit 122, the lens buffer basket 111 is pulled out of the lens buffer fixture 11 and placed on the picking platform 123. Of course, in other embodiments, the lens loading device 1 can also be a conveyor belt or a loading turntable, or other loading and conveying devices, which are not limited herein. In this embodiment, the lens buffer fixture 11 is used in conjunction with the lifting and picking mechanism 12 to make the lens loading arrangement clear and facilitate the subsequent transfer of individual lenses to the lens cleaning device.

[0044] In this embodiment, after the lens is loaded by the lens loading device 1, it is transferred to the lens cleaning device 2 for surface cleaning. (See also...) Figures 4 to 9As shown, the lens cleaning device 2 includes a first conveying mechanism 21, an alignment adjustment mechanism 22, a transfer mechanism 23, a surface cleaning mechanism 24, a conveying mechanism 25, and a storage platform 26. The first conveying mechanism 21 docks with the lens loading device 1 to grab the loaded lenses and transport them to the alignment adjustment mechanism 22. Specifically, the first conveying mechanism 21 includes a first drive transfer assembly 211 and a transport robot 212. The transport robot 212 is located at the output end of the first drive transfer assembly 211. The transport path of the first drive transfer assembly 211 follows the arrangement direction of the multiple basket loading buffer fixtures 11, allowing the transport robot 212 to move to any basket loading buffer fixture 11 to grab a single lens. Furthermore, the first drive transfer assembly 211 can be a motor-driven screw-slider assembly, or a conveyor belt or motor-driven belt-rail assembly, or other drive components; this is not limited to these specific components. Among them, the handling robot 212 is a six-axis robot; the output end of the handling robot 212 is a structure for controlling the opening and closing of the gripper with a cylinder, and the gripper is a flexible gripper adapted to the lens to facilitate gripping the lens.

[0045] After the first conveying mechanism 21 picks up a lens from the lens loading device 1, it conveys the lens to the alignment adjustment mechanism 22 for alignment adjustment. (See attached...) Figure 6 As shown, the alignment adjustment mechanism 22 includes an alignment CCD 221, a rotating platform 222, and a fixture 223 mounted on the rotating platform 222. The alignment CCD 221 is located above the rotating platform 222 and faces the fixture 223. The alignment CCD 221 takes pictures of the lens that has been transported and placed on the fixture 223 by the first transport mechanism 21. Then, the rotating platform 222 drives the fixture 223 to rotate to adjust the position and orientation of the lens on the fixture 223 to ensure the horizontality of the lens.

[0046] In this embodiment, please continue to refer to Figures 4 to 5 As shown, the transfer mechanism 25 includes a second drive transfer assembly 251 and a receiving seat 252 located at the output end of the second drive transfer assembly 251. The receiving seat 252 is for placing the lens and can be transferred laterally under the drive of the second drive transfer assembly 251. The transfer mechanism 23 and the surface cleaning mechanism are both located on the transmission path of the transfer mechanism 25. Specifically, the second drive transfer assembly 251 can be a motor-driven lead screw and slider assembly, or other drive assemblies such as a conveyor belt or a motor-driven belt and belt guide assembly; this is not limited herein.

[0047] In this embodiment, to ensure that the receiving seat 252 and the rotating platform 222 of the alignment adjustment mechanism 22 are collinear, the alignment adjustment mechanism 22 is also located at the output end of the second drive transfer component 251 and can move relative to it. After the lens has been aligned, it is transferred to the transfer mechanism 23 under the drive of the alignment adjustment mechanism 22. The transfer mechanism 23 is driven to move downward to pick up the lens. Then, the alignment adjustment mechanism 22 returns to its original position, and the transfer mechanism 23 drives the lens to move upward. Under the drive of the second drive transfer component 251, the receiving seat 252 moves to a position below the transfer mechanism 23. The transfer mechanism 23 is driven to move downward to place the lens on the receiving seat 252. Specifically, the transfer mechanism 23 includes a lifting drive component 231 and a picking clamp 232. The picking clamp 232 is connected to the output end of the lifting drive component 231 and moves vertically under the drive of the lifting drive component 231. The picking clamp 232 can pick up the lens by adsorption.

[0048] In this embodiment, the transfer mechanism 25 drives the receiving seat 252 to be transferred to the surface cleaning mechanism 24 to clean the lens surface. (See also...) Figures 7 to 9 As shown, the surface cleaning mechanism 24 includes a first surface cleaning mechanism 241, a sorting mechanism 242, and a second surface cleaning mechanism 243. The first surface cleaning mechanism 241 and the sorting mechanism 242 are located on the conveying path of the transfer mechanism 25, and the second surface cleaning mechanism 243 is located below the sorting mechanism 242. Lenses are transferred by the transfer mechanism 25 to the first surface cleaning mechanism 241 for cleaning of the upper surface. Afterwards, they pass through the sorting mechanism 242, which picks up the lenses, and the second surface cleaning mechanism 243 below cleans the lower surface of the lenses. Finally, the storage platform 26 is transferred to the sorting mechanism 242, which transfers the lenses onto the storage platform 242. For details, please refer to [reference needed]. Figure 7 As shown, the first surface cleaning mechanism 241 includes a first USC cleaning component 2411 and a first AOI inspection component 2412. The working end of the first USC cleaning component 2411 and the inspection end of the first AOI inspection component 2412 face downwards. The transfer mechanism 25 passes sequentially through the first USC cleaning component 2411 and the first AOI inspection component 2412. The first USC cleaning component 2411 cleans the upper surface of the lens, and the first AOI inspection component 2412 inspects the cleaning effect and surface shape defects of the upper surface of the lens. (See reference...) Figure 9As shown, the second surface cleaning mechanism 243 includes a second USC cleaning component 2431 and a second AOI detection component 2432. The working end of the second USC cleaning component 2431 and the detection end of the second AOI detection component 2432 face upwards. The sorting mechanism 242 picks up the lens and passes it sequentially through the second USC cleaning component 2431 and the second AOI detection component 2432. The second USC cleaning component 2431 cleans the lower surface of the lens, and the second AOI detection component 2432 detects the cleaning effect and surface shape defects of the lower surface of the lens. USC cleaning, or ultrasonic cleaning, utilizes the cavitation, acceleration, and direct flow effects of ultrasound in a liquid to directly and indirectly act on the liquid and contaminants, causing the contaminant layer to be dispersed, emulsified, and peeled off to achieve the cleaning purpose. Both the first USC cleaning assembly 2411 and the second USC cleaning assembly 2431 include a cleaning head. The cleaning head contains an ultrasonic pressure chamber and a vacuum chamber. The high-pressure air knife generated by the two nozzles of the cleaning head effectively removes dust particles of 3-100μm. These dust particles are adsorbed into the vacuum chamber. During operation, an air layer forms on the surface of the workpiece. The ultrasonic waves can effectively break down this layer, causing the tiny particles encased within it to separate and finally be sucked away by the vacuum, achieving the cleaning purpose. This is a common technique in the art and will not be elaborated upon here.

[0049] See Figure 8 As shown, the sorting mechanism 242 includes a third drive transfer assembly 2421 and a pickup assembly 2422, a thickness measuring assembly 2423, and a cleaning roller 2424 disposed at the output end of the third drive transfer assembly 2421. The pickup assembly 2422 includes a lifting part and a gripping part, and the output end of the lifting part is connected to the gripping part. Specifically, under the drive of the third drive transfer assembly 2421, the pickup assembly 2422 moves to above the transfer mechanism 25. The gripping part grips the lens under the drive of the lifting part. The thickness measuring assembly 2423 detects the thickness of the lens, and the cleaning roller 2424 cleans the platform. At this time, the lower surface of the lens faces downward and is located at the detection end of the second surface cleaning mechanism 243, so that the second USC cleaning assembly 2431 and the second AOI detection assembly 2432 can act on it.

[0050] Continue reading Figure 4 As shown, the storage platform 26 can accommodate multiple lenses. In this embodiment, the storage platform 26 has a total of 6 lens placement positions for 6 lenses. Of course, in other embodiments, there is no limitation on the number of lenses that can be placed on the storage platform 26. Furthermore, in order to save costs and ensure the docking of the storage platform 26 with the sorting mechanism 242, the storage platform 26 is mounted on the second drive transfer assembly 251 and can move relative to the second drive transfer assembly 251.

[0051] The specific working process of the lens cleaning device 2 is as follows: the first conveying mechanism 21 picks up a single lens located on the lens buffer basket 111 and transports it to the alignment adjustment mechanism 22 to adjust the angle of the lens and ensure its levelness; then the alignment adjustment mechanism 22 drives the lens to be transferred to the area below the transfer mechanism 23, and the transfer mechanism 23 picks up the lens; the second drive transfer component 251 of the transfer mechanism 25 drives the receiving seat 252 to move to the area below the transfer mechanism 23 so that the lens is transferred to the receiving seat 252; then the receiving seat 252 is transferred to the first surface cleaning mechanism 241 under the drive of the second drive transfer component 251 to clean the upper surface of the lens and detect the shape defects of the upper surface; then the sorting mechanism 242 picks up the lens located on the receiving seat 252, and the second surface cleaning mechanism 243 cleans the lower surface of the lens and detects the shape defects of the lower surface; finally, the storage platform 26 is transferred to the sorting mechanism 242 to receive the lens.

[0052] In this embodiment, please continue to refer to Figure 4 As shown, the dispensing and stacking device 3 is equipped with a second conveying mechanism 31 to convey lenses located on the storage platform 26. The second conveying mechanism 31 includes a lateral conveying section and a gripping section located at the output end of the lateral conveying section, which moves to grip the lenses. (See reference...) Figure 10 As shown, the dispensing and bonding device 3 includes a first bonding mechanism 32, a dispensing mechanism 33, an upper shape alignment CCD mechanism 34, a second bonding mechanism 35, a lower shape alignment CCD mechanism 36, and a UV curing mechanism 37. The first bonding mechanism 32 is for placing the lens and can move laterally. Specifically, the first bonding mechanism 32 includes a first lateral transfer drive assembly 321 and a bonding lower platform 322 fixedly disposed at the output end of the first lateral transfer drive assembly 321. The bonding lower platform 322 is provided with a receiving fixture for placing the lens, and the bonding lower platform 322 moves laterally under the drive of the first lateral transfer drive assembly 321. The first lateral transfer drive assembly 321 can be a drive motor, a lead screw, and a lead screw slider to achieve transmission in the X-axis direction. Of course, in other embodiments, the first lateral transfer drive assembly 321 can also be a conveyor belt or a motor-driven belt and slide rail assembly, or other drive components, which are not limited herein.

[0053] In this embodiment, the dispensing mechanism 33 and the second bonding mechanism 35 are sequentially located on the moving path of the first bonding mechanism 32. (See reference...) Figure 11As shown, the dispensing mechanism 33 includes a second lateral conveying drive assembly 331 and a dispensing assembly 332, a height measuring assembly 333, and an adhesive width detection assembly 334 sequentially disposed at the output end of the second lateral conveying drive assembly 331. The first bonding mechanism 32 is conveyed to the dispensing mechanism 33, where the dispensing mechanism 33 sequentially performs dispensing, adhesive thickness detection, and adhesive width detection on the lens. In this embodiment, taking five lenses being aligned and stacked as an example, the dispensing mechanism 33 is used to apply adhesive to the surfaces of the second, third, fourth, and fifth lenses, excluding the first lens being stacked.

[0054] In this embodiment, the upper shape alignment CCD mechanism 34 is located between the dispensing mechanism 33 and the second bonding mechanism 35 to perform alignment photography of the upper surface of the lens transferred from the first bonding mechanism 32. Specifically, the dispensing mechanism 33 does not perform dispensing on the first lens. Therefore, the first lens is directly transferred from the first bonding mechanism 32 to the upper shape alignment CCD mechanism 34, where the upper shape alignment CCD mechanism 34 performs alignment photography of the upper surface of the first lens, and then directly transfers it to the second bonding mechanism 35. The 2nd, 3rd, 4th, and 5th lenses to be stacked are first transferred to the upper shape alignment CCD mechanism 34, where the upper shape alignment CCD mechanism 34 performs alignment photography of the upper surface of the lenses; then they are transferred to the dispensing mechanism 33, where the dispensing mechanism 33 performs dispensing, dispensing thickness detection, and dispensing width detection; and then they are transferred to the second bonding mechanism 35.

[0055] See Figure 12 As shown, the second bonding mechanism 35 includes a mounting bracket 351 and a bonding upper platform 352. The bonding upper platform 352 includes a Z-axis lifting drive assembly 3521 and a bonding fixture 2522. The Z-axis lifting drive assembly 3521 is fixedly mounted on the mounting bracket 351 and connected to the bonding fixture 2522 to drive the bonding fixture 2522 to move vertically. The bonding fixture 2522 is also connected to an adsorption assembly to pick up the lens located on the first bonding mechanism 32. Furthermore, in order to ensure the relative parallelism between the bonding upper platform 352 and the bonding lower platform 322, the bonding upper platform 352 also includes a two-axis adjustment platform 3523. The two-axis adjustment platform 3523 is connected to the bonding fixture 2522 to adjust the relative parallelism between the bonding fixture 2522 and the bonding lower platform 322.

[0056] In this embodiment, the lower outline alignment CCD mechanism 36 is located below and faces the second bonding mechanism 35 to perform alignment photography of the lower surface of the lens located on the second bonding mechanism 35. In this embodiment, the upper outline alignment CCD mechanism 34 and the lower outline alignment CCD mechanism 36 are provided to ensure accurate alignment of multiple lenses, and cooperate with the first bonding mechanism 32 and the second bonding mechanism 35 to ensure the horizontality and alignment of the overlapping.

[0057] Continue reading Figure 10 As shown, the UV curing mechanism 37 includes a third lateral transfer drive assembly 371 and a loading platform 372 located at the output end of the third lateral transfer drive assembly 371. A UV curing assembly 373 is mounted on the loading platform 372. Driven by the third lateral transfer drive assembly 371, the loading platform 372 moves to below the second bonding mechanism 35 to receive the stacked lenses, where the UV curing assembly 373 cures them. Furthermore, to ensure accurate alignment between the UV curing assembly 373 and the second bonding mechanism 35, the UV curing assembly 373 is collinear with the first bonding mechanism 32. The third lateral transfer drive assembly 371 can be a lead screw and slider assembly driven by a drive motor; the loading platform 372 uses a marble base; and the UV curing assembly 373 uses UV curing to irradiate and activate the adhesive between the lenses, achieving the purpose of curing the adhesive. The UV curing assembly 373 is symmetrically arranged in a ring on the loading platform 372 to ensure the curing effect on the stacked lenses. In this embodiment, after the first bonding mechanism 32 and the second bonding mechanism 35 have completed the stacking of the 5 lenses, the second bonding mechanism 35 picks up the lens and drives it to move upward. At this time, the UV curing mechanism 37 moves to the bottom of the second bonding mechanism 35 to receive the stacked lens on the second bonding mechanism 35 and perform overall curing on the UV curing mechanism 37 to ensure the curing effect.

[0058] The specific working process of the dispensing and stacking device for this lens is as follows:

[0059] The first lens is fed to the first bonding mechanism 32 and transferred by the first bonding mechanism 32; it is transferred to the upper shape alignment CCD mechanism 34 to take shape alignment pictures of the upper surface of the first lens; then, under the transfer of the first bonding mechanism 32, it reaches the location of the second bonding mechanism 35, the second bonding mechanism 35 is driven to press down to pick up the first lens, and the lower shape alignment CCD mechanism 5 located below the second bonding mechanism 35 takes shape alignment pictures of the lower surface of the first lens.

[0060] The second lens is fed to the first bonding mechanism 32 and then transferred by the first bonding mechanism 32 to the upper shape alignment CCD mechanism 34 for shape alignment photography of the upper surface of the second lens. After that, it is transferred by the first bonding mechanism 32 to the dispensing mechanism 33 for dispensing, dispensing thickness detection, and dispensing width detection. Then, under the transfer of the first bonding mechanism 32, it reaches the location of the second bonding mechanism 35. The second bonding mechanism 35 is driven to press down to drive the first lens to be aligned and stacked with the second lens located on the first bonding mechanism 32. At this time, the stacked first lens and the second lens are located on the receiving fixture of the first bonding mechanism 32. After being irradiated by the pre-curing UV lamp on the first bonding mechanism 32, the pre-curing between the two is completed. Then, the second bonding mechanism 35 picks up the pre-cured first lens and the second lens and drives it to move upward. The lower shape alignment CCD mechanism 5 located below the second bonding mechanism 35 takes shape alignment photography of the lower surface of the stacked first lens and the second lens.

[0061] The subsequent process of stacking other lenses is the same as that of the second lens, and so on, to complete the alignment and stacking of 5 lenses. At this time, the 5 lenses that have been stacked are located on the second bonding mechanism 35. The UV curing mechanism 37 is moved to the bottom of the second bonding mechanism 35 to receive the stacked lenses on the second bonding mechanism 35 and to perform overall curing on the UV curing mechanism 37.

[0062] In this embodiment, see Figure 13As shown, the finished product unloading device 4 includes an unloading robot 41 and an unloading hopper 42. The unloading robot 41 picks up the stacked lenses from the UV curing mechanism 37 and transports them to the unloading hopper 42, from which they are then unloaded. Specifically, the unloading robot 41 includes a Z-axis lifting drive, a Y-axis conveying unit, an X-axis conveying unit, and a gripping unit. The Z-axis lifting drive, Y-axis conveying unit, and X-axis conveying unit are connected to the gripping unit to drive the gripping unit to move along the Z, X, and Y axes, thereby placing the molded lenses into the unloading hopper 42. Of course, in other embodiments, the unloading robot 41 may also adopt a structure such as the first conveying mechanism 21 including a drive conveying component and a six-axis robot located at the output end of the drive conveying component, etc., which is not limited herein. In this embodiment, the discharge hopper 42 includes a tray lifting mechanism 421 and a tray transport mechanism 422. The tray lifting mechanism 421 and the tray transport mechanism 422 are located below the table of the frame 10, and the discharge position 420 is located above the table. Specifically, a person or a robot connects with the tray transport mechanism 422 to place an empty tray on it and have it transported to the tray lifting mechanism 421, where it lifts the empty tray to the top. Four cylinders are provided at the tray lifting mechanism 421 to calibrate the empty tray located on the outermost surface. Then, the unloading robot 41 places the stacked lenses into the empty tray. Once the empty tray is full, the unloading robot 41 transports the full tray to the discharge position 420. Finally, the tray is unloaded by a person or an AGV.

[0063] The present invention also provides a dispensing and lamination method, characterized by comprising the following steps:

[0064] A1, providing the above-described lens dispensing and laminating equipment, providing multilayer lenses;

[0065] A2, clean the lenses one by one;

[0066] A3, apply adhesive to the remaining lenses that need to be stacked, except for the first lens;

[0067] A4, overlap the individual lens after applying adhesive with the lower surface of the previous lens.

[0068] In step A2 above, the lens is cleaned sequentially, specifically, the lens surface is cleaned. Furthermore, the lens surface cleaning includes cleaning the first surface of the lens and performing AOI inspection on the first surface; and cleaning the second surface of the lens and performing AOI inspection on the second surface.

[0069] In step A4 above, the individual lens after adhesive application is superimposed on the lower surface of the previous lens, and the alignment photos of the upper surface and the lower surface of the lens are also taken. Specifically, the first lens undergoes alignment photography of its upper and lower surfaces to determine its pose. Then, the second lens is photographed with its upper surface aligned, and the detection information from the upper surface of the second lens is compared with the detection information from the lower surface of the first lens to adjust their positions, ensuring accurate alignment for easy overlay. Simultaneously, alignment photography of the lower surfaces of the overlaid first and second lenses is also performed. Next, the third lens is photographed with its upper surface aligned, and the detection information from the upper surface of the third lens is compared with the alignment information from the lower surfaces of the overlaid first and second lenses to adjust their positions, ensuring accurate alignment for subsequent overlay operations. This process is repeated to achieve docking detection between multiple lenses, ensuring accurate overlay.

[0070] Furthermore, this embodiment also includes step A5, which involves curing the stacked multilayer lenses. Specifically, this includes two steps: pre-curing and internal curing. Pre-curing is performed after step A4, where the individual lens after adhesive application is stacked with the lower surface of the previous lens, and then the stacked lenses are pre-cured. Internal curing is performed after the required number of lenses are stacked, and then the final stacked lenses are cured. These two steps, pre-curing and internal curing, ensure the curing effect.

[0071] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A lens dispensing and laminating device, characterized in that: The application relates to a lens cleaning and stacking device, which comprises a rack, a lens feeding device, a lens cleaning device, a dispensing and stacking device and a finished product discharging device arranged in sequence on the rack; the lens is fed by the lens feeding device, and then is transferred to the lens cleaning device to clean the surface of the lens; the lens cleaning device comprises a surface cleaning mechanism, a transfer mechanism and a storage platform; the transfer mechanism receives the fed lens, the lens is transferred to the surface cleaning mechanism by the transfer mechanism to perform the surface cleaning action, and the cleaned lens is sequentially transferred to the storage platform; the storage platform can accommodate multiple lenses; the lens on the storage platform is transferred to the dispensing and stacking device, and the dispensing and stacking device performs the stacking action on the multiple lenses; and the finished product discharging device discharges the stacked lens. The dispensing and stacking device comprises a first lamination mechanism, a dispensing mechanism and a second lamination mechanism; the first lamination mechanism is used for placing the lens, and the first lamination mechanism can move horizontally; the dispensing mechanism and the second lamination mechanism are arranged in sequence on the moving path of the first lamination mechanism; the first lamination mechanism transfers the first lens to the second lamination mechanism to be picked up by the second lamination mechanism; the first lamination mechanism sequentially transfers the remaining lenses to be stacked to the dispensing mechanism to be dispensed, and then to the second lamination mechanism; the second lamination mechanism is driven to be pressed to be laminated with the first lamination mechanism, so that the lens on the second lamination mechanism is laminated with the lens on the first lamination mechanism; and the second lamination mechanism picks up the laminated lens and drives the lens to move upwards.

2. The dispensing lamination apparatus for lenses according to claim 1, wherein: The lens cleaning mechanism comprises a first surface cleaning mechanism, a sorting mechanism and a second surface cleaning mechanism; the first surface cleaning mechanism and the sorting mechanism are arranged on the conveying path of the transfer mechanism; and the second surface cleaning mechanism is arranged below the sorting mechanism; the lens is transferred to the first surface cleaning mechanism by the transfer mechanism to clean the upper surface of the lens; then the lens passes through the sorting mechanism; the sorting mechanism picks up the lens, and the lower surface of the lens is cleaned by the second surface cleaning mechanism. The storage platform is transferred to the sorting mechanism, and the sorting mechanism transfers the lens to the storage platform.

3. The apparatus according to claim 2, wherein: The first surface cleaning mechanism comprises a first USC cleaning assembly and a first AOI detection assembly; the acting end of the first USC cleaning assembly and the detection end of the first AOI detection assembly face downward; the transfer mechanism sequentially passes through the first USC cleaning assembly and the first AOI detection assembly; the first USC cleaning assembly cleans the upper surface of the lens; and the first AOI detection assembly detects the cleaning effect and surface appearance defects of the upper surface of the lens.

4. The dispensing lamination apparatus for lenses of claim 2, wherein: The second surface cleaning mechanism comprises a second USC cleaning assembly and a second AOI detection assembly, and the working end of the second USC cleaning assembly and the detection end of the second AOI detection assembly are upward, the sorting mechanism picks up the lens and sequentially passes through the second USC cleaning assembly and the second AOI detection assembly, the second USC cleaning assembly cleans the lower surface of the lens, and the second AOI detection assembly detects the cleaning effect and surface appearance defects of the lower surface of the lens.

5. The apparatus of claim 1, wherein: The lens cleaning device further comprises a first conveying mechanism arranged between the lens feeding device and the transferring mechanism to pick up the lens on the lens feeding device and convey the lens.

6. The apparatus of claim 1, wherein: The lens cleaning device further comprises an alignment adjustment mechanism and a transfer mechanism, and the alignment adjustment mechanism and the transfer mechanism are located at the beginning end of the transferring mechanism, the lens fed by the lens feeding device is transferred to the alignment adjustment mechanism to perform alignment adjustment on the lens, and then the transfer mechanism picks up the adjusted lens and transfers it to the transferring mechanism.

7. The apparatus according to claim 6, wherein: The alignment adjustment mechanism comprises an alignment CCD, a rotating platform and a jig arranged on the rotating platform, the jig is used for placing the lens, the alignment CCD is located above the rotating platform and faces the jig, the alignment CCD takes a photo of the lens, and then the rotating platform drives the jig to rotate to adjust the pose of the lens on the jig.

8. The apparatus of claim 1, wherein: The dispensing and laminating device further comprises an upper contour alignment CCD mechanism and a lower contour alignment CCD mechanism, the upper contour alignment CCD mechanism is located between the dispensing mechanism and the second laminating mechanism to take a photo of the upper surface of the lens transferred by the first laminating mechanism, and the lower contour alignment CCD mechanism is located below the second laminating mechanism and faces the second laminating mechanism to take a photo of the lower surface of the lens on the second laminating mechanism.

9. A method for dispensing and laminating lenses, the method comprising: The method comprises the following steps: A1, providing the dispensing and laminating equipment of the lens of any one of claims 1-8, and providing a plurality of lenses; A2, sequentially cleaning the lenses; A3, dispensing the lenses other than the first lens to be laminated in sequence; A4, laminating the single lens after dispensing with the lower surface of the previous lens.

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