Automatic dispensing machine for laser radar lens

Abstract

The invention provides an automatic dispensing machine for a laser radar lens, and relates to the technical field of optical lens equipment. The feeding module is arranged in the middle of the workbench. The feeding disc is used for placing lens elements provided with pressing rings and lenses. The rubber ring discharging module is arranged on the workbench and used for gradually ejecting out single rubber rings, the rubber rings are filled with glue capable of being subjected to UV curing, and the outer portions of the rubber rings are covered with outer films capable of being heated and melted; the dispensing modules are arranged on the two sides of the workbench, and a heating module is arranged on the gluing head and used for heating and melting an outer film of a rubber ring, so that glue is released and filled in a seam; the carrying module is used for automatically carrying a feeding disc of the feeding module to a dispensing position of the dispensing module; the positioning module is arranged on the dispensing module and used for detecting and positioning the center position of the lens. Compared with the prior art, the automatic dispensing device has the advantages that the dispensing precision and reliability are remarkably improved, and automation and stability in the dispensing process are achieved at the same time.

Description

Technical Field

[0001] This invention relates to the field of optical lens equipment technology, and in particular to an automatic dispensing machine for lidar lenses. Background Technology

[0002] In the production and assembly of LiDAR lenses, the lens clamping process is crucial for ensuring stable lens fixation and image quality. Typically, the lens is bonded to the lens barrel or support via a clamping ring, and an appropriate amount of adhesive needs to be applied between the clamping ring and the lens to enhance bonding strength and improve sealing. However, existing manual dispensing methods rely on operator experience, which can easily lead to uneven adhesive distribution, inaccurate application, or adhesive overflow, resulting in lens imaging deviations, reduced light transmittance, and even detachment or loosening during subsequent use. Furthermore, traditional semi-automatic equipment often uses simple spraying or dripping methods for dispensing, which, limited by adhesive volume control and nozzle stability, struggles to meet the high precision and consistency requirements of optical lenses. Summary of the Invention

[0003] The purpose of this application is to provide an automatic dispensing machine for LiDAR lenses to solve the aforementioned technical problems existing in the prior art.

[0004] This application provides an automatic dispensing machine for LiDAR lenses, which adopts the following technical solution: An automatic dispensing machine for lidar lenses, comprising: Workbench; The loading module is located in the middle of the workbench. The loading module includes a loading rack, on which multiple loading trays are stacked. The loading trays are used to hold lens components with installed pressure rings and lenses. A rubber ring ejection module is set on the worktable to eject individual rubber rings one by one. The rubber ring is filled with UV-curable adhesive and covered with a heat-melting outer film. A dispensing module is disposed on both sides of the worktable. The dispensing module includes a dispensing head, which can move along the X-axis, Y-axis and / or Z-axis of the worktable under the drive of the drive mechanism to pick up the adhesive ring from the adhesive ring dispensing module and accurately place the adhesive ring at the joint between the pressure ring and the lens of the lens element. The dispensing head is provided with a heating module for heating and melting the outer film of the adhesive ring, so that the adhesive is released and fills the joint. A transport module, set on the workbench, is used to automatically transport the loading tray of the loading module to the dispensing position of the dispensing module, so as to realize the automatic transfer and positioning of the lens components. A positioning module is installed on the dispensing module and is used to detect and position the center position of the lens so that the dispensing module can accurately place the adhesive ring based on the positioning result after the dispensing module has completed the transportation.

[0005] Preferably, the glue applicator includes a glue rod, and the glue rod has an annular wing near its bottom. The bottom of the annular wing has an adsorption groove for adsorbing the glue ring. The adsorption groove is connected to an adsorption channel, and the adsorption channel is connected to a negative pressure source.

[0006] Preferably, the heating module includes a heating wire disposed at the bottom of the annular wing edge.

[0007] Preferably, a tapered convex edge is provided at the bottom of the rubber rod and below the annular wing edge. A first annular air chamber and a second annular air chamber are sequentially formed inside the tapered convex edge. The first annular air chamber and the second annular air chamber are respectively connected to the air source through gas flow channels. A first outlet is provided on the first annular air chamber and a second outlet is provided on the second annular air chamber. The first outlet and the second outlet are respectively oriented towards both sides of the joint between the pressure ring and the lens.

[0008] Preferably, the annular wing edge is arranged in a mushroom shape, and an annular UV light source is installed at the bottom of the annular wing edge near the inner side. The conical convex edge and the inner side of the annular wing edge form a reflective cavity, and the reflective cavity is covered with a reflective film. And / or, the outer side of the annular wing has an abutment portion, the abutment portion is flared outward and the diameter gradually increases, the abutment portion can be flexibly deformed to abut against the inner wall of the groove where the lens element mounting ring and lens are mounted.

[0009] Preferably, the bottom of the adhesive rod is provided with a pressure head, and a guide rod is fixedly connected to the pressure head. The guide rod is slidably disposed on the adhesive rod along the axial direction of the adhesive rod. An elastic element is provided between the pressure head and the adhesive rod. The elastic element is used to drive the pressure head to remain in an outwardly extended state in the initial state and to provide a stable elastic pre-tightening pressure during the pressing of the lens.

[0010] Preferably, the rubber ring dispensing module includes an outer tube and a driving component. A portion of the outer tube is located inside the worktable, and another portion extends out of the worktable. The top outlet of the outer tube is located directly below the moving path of the rubber applicator. The driving component is connected to the outer tube and is used to drive the rubber rings to extend out of the top outlet of the outer tube one by one.

[0011] Preferably, the transport module includes a first transport Y-axis structure, a first transport X-axis structure, and a second transport Y-axis structure. The first transport Y-axis structure is used to extend into the loading rack and remove the loading trays one by one. The first transport X-axis structure includes a main frame, a sliding frame, and a clamping cylinder. The main frame is mounted on the worktable along the X-axis direction. The sliding frame is slidably mounted on the main frame and can move along the X-axis direction under the drive of the driving mechanism. The clamping cylinder is mounted on the main frame and is used to clamp and fix the lens element for transport to the second transport Y-axis structures on both sides. The second transport Y-axis structures are arranged along the Y-axis direction and are located on both sides of the worktable. The second transport Y-axis structures are used to receive the lens element clamped by the clamping cylinder for transport to the corresponding dispensing position of the dispensing module. And / or, the outer tube is hollow, and the inner wall of the outer tube has multiple negative pressure holes opened vertically, and the hollow cavity of the outer tube is connected to a negative pressure source.

[0012] Preferably, the positioning module includes a CCD camera, which is vertically mounted on the movable frame of the dispensing module.

[0013] Preferably, the workbench is provided with a wiping component corresponding to the positions of the dispensing modules on both sides. The wiping component includes a bidirectional cylinder. A wiping block is provided on the connecting block of the driving end of the bidirectional cylinder. A collection groove is provided on the cylinder body of the bidirectional cylinder and directly below the wiping block.

[0014] The present invention has the following advantages and beneficial effects: (1) This invention, by designing the rubber ring to be filled with UV-curable adhesive and covering it with a heat-melting outer film, avoids the traditional method of directly spraying adhesive from the nozzle, thus solving the problem of difficulty in accurately controlling the amount of adhesive dispensed. The rubber ring dispensing module can eject individual rubber rings one by one, and the dispensing module picks up and accurately places the rubber rings through the dispensing head, so that the adhesive release position is fixed and the dosage is stable, effectively preventing the overflow and lack of adhesive caused by uneven dispensing. At the same time, it also avoids the problem of residue and blockage caused by the adhesive directly contacting the nozzle, thereby significantly improving the accuracy and reliability of dispensing.

[0015] (2) By setting up a handling module and a positioning module, this invention achieves fully automated operation of lens components from loading, handling, positioning to dispensing, avoiding errors caused by manual intervention and improving consistency and efficiency in the production process. The positioning module can accurately detect the center of the lens, ensuring precise alignment of the adhesive ring and the pressure ring joint, while the heating module ensures that the outer film of the adhesive ring melts quickly and releases the adhesive, allowing the adhesive to quickly fill and solidify, forming a strong bond. Thus, this invention not only improves the stability and yield of optical lens pressure ring dispensing, but also reduces the intensity of manual operation and maintenance costs, making it suitable for the production of optical components with high requirements for precision and consistency. 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 these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram illustrating the overall structure of an automatic dispensing machine for LiDAR lenses.

[0018] Figure 2 This is a schematic diagram designed to demonstrate the structure of the dispensing module.

[0019] Figure 3 It is a cross-sectional view intended to show the rubber head.

[0020] Figure 4 yes Figure 3 Enlarged view of section A.

[0021] Figure 5 This is a schematic diagram designed to show the structure of the negative pressure hole in the outer tube.

[0022] Figure 6 This is a schematic diagram designed to illustrate the structure of the rubber ring.

[0023] Figure 7 This is a structural diagram designed to demonstrate the first transport Y-axis structure.

[0024] Figure 8 This is a structural diagram designed to demonstrate the first transport X-axis structure.

[0025] Figure 9 This is a structural diagram designed to demonstrate the second transport Y-axis structure.

[0026] Figure 10 This is a structural diagram intended to show the adhesive application component.

[0027] Figure 11This is a schematic diagram showing the overall shape of an automatic dispensing machine for LiDAR lenses.

[0028] The diagram is marked as follows: 100. Workbench; 110. Protective cover; 200. Feeding module; 210. Feeding rack; 211. Feeding tray; 300. Glue ring discharge module; 310. Outer tube; 311. Negative pressure hole; 400. Dispensing module; 401. Moving frame; 410. Glue head; 4100. Glue rod; 411. Heating module; 4111. Heating wire; 420. Annular wing edge; 421. Adsorption tank; 422. Adsorption channel; 430. Conical convex edge; 431. First annular air chamber; 4311. First outlet; 432. Second annular air chamber; 4322. Second outlet; 4333. Gas channel; 440. UV light source; 450, Reflective cavity; 460, Reflective film; 470, Abutment part; 500, Transport module; 510, First transport Y-axis structure; 511, Moving tray; 520, First transport X-axis structure; 521, Main frame; 522, Sliding frame; 523, Clamping cylinder; 530, Second transport Y-axis structure; 531, Transport tray; 5311, Tank; 600, Positioning module; 700, Pressure head; 710, Guide rod; 711, Elastic element; 800, Glue wiping component; 810, Bidirectional cylinder; 811, Connecting block; 812, Wiping block; 820, Collection tank; 900, Lens element; 910, Glue; 920, Outer film. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The following is combined Figures 1 to 11The automatic dispensing machine for lidar lenses provided in this application will be described in detail through specific embodiments and application scenarios.

[0032] An automatic dispensing machine for laser radar lenses includes a worktable 100. The worktable 100 and a protective cover 110 above it form a closed space, providing comprehensive protection for internal components and preventing external dust and impurities from entering, thus ensuring a clean dispensing environment. The protective cover 110 can be made of partially or completely transparent material, allowing operators to easily observe the internal operation and improving safety. A door is installed on the protective cover 110, which can be opened and closed by rotating along a pivot, facilitating maintenance and material loading operations inside the worktable 100 when needed. A vacuum extraction device is installed on the top of the protective cover 110, connected to an external exhaust pipe, which can extract gases and impurities during the dispensing process in real time, preventing glue mist from accumulating inside the worktable 100, ensuring a stable and clean dispensing environment, and extending the equipment's service life.

[0033] The loading module 200 is installed in the middle of the workbench 100 near the edge. The loading module 200 includes a loading rack 210, part of which is located inside the workbench 100 to avoid occupying too much space, while the other part extends above the workbench 100. A Z-axis drive mechanism is installed on the loading rack 210. This drive mechanism is a screw-and-screw combined with a motor drive structure, which can drive the loading rack 210 to move stepwise along the Z-axis, achieving stable lifting and lowering switching of multiple loading trays 211. Multiple loading trays 211 are stacked on the loading rack 210. The loading trays 211 are made of metal or high-strength engineering plastic, ensuring load-bearing capacity while being lightweight. The loading trays 211 are used to hold lens elements 900 with pre-installed pressure rings and lenses. The stacking method enables batch storage, reduces the frequency of manual intervention, and improves the degree of automation.

[0034] The rubber ring ejection module 300 is installed on the worktable 100 and is used to eject individual rubber rings one by one, ensuring accurate and stable ejection each time and avoiding situations where multiple rubber rings are ejected at once or where rubber rings get stuck. This ejection module typically includes a storage tube 310, a push rod, and a drive mechanism. Multiple rubber rings are vertically stacked inside the storage tube 310. Under the action of the drive mechanism, the push rod ejects the bottom rubber ring one by one to the dispensing station, ensuring continuous and controllable material supply. In some embodiments, the push rod can be driven by a stepper motor in conjunction with a photoelectric sensor for precise control of the ejection action; alternatively, a pneumatic ejector pin can be used to complete the ejection action, simplifying the structure and increasing the ejection speed.

[0035] In this embodiment, the adhesive ring is circular to match the circular structure of common optical lens retainers and lenses. In other embodiments, it can be adapted to the actual shape of the retainer and lens, for example, designed as an ellipse, square, or polygon to meet the bonding requirements of special optical components. The adhesive ring is filled with UV-curable adhesive 910, ensuring that curing can be completed in a short time after dispensing, improving production efficiency and shortening the assembly cycle. To further ensure the stability of adhesive 910 in different environments, the adhesive 910 can be an acrylic or epoxy resin-based UV-curable adhesive, which has good flowability, low shrinkage, and excellent optical transparency, thereby ensuring a strong bond without affecting the lens imaging quality.

[0036] The outer surface of the rubber ring is covered with a heat-melting outer film 920. This outer film 920 is preferably made of a thin film material such as polyethylene or polypropylene. This type of material melts rapidly upon heating, releasing the internal adhesive 910 without reacting chemically with or adversely affecting its performance. Simultaneously, this outer film 920 provides isolation and protection during the storage and handling of the rubber ring, preventing premature leakage of the adhesive 910 or contamination by moisture or dust in the air, thus ensuring a clean and reliable process from material dispensing to gluing. Since the volume of adhesive 910 inside each rubber ring is predetermined, a strict one-time dispensing method can be achieved, avoiding problems such as difficulty in controlling the dispensing volume of traditional spray nozzles and easy clogging of the nozzle by adhesive 910 residue. This fundamentally ensures the stability and reliability of the dispensing process.

[0037] In some implementations, the rubber ring discharge module 300 can also be equipped with a photoelectric detection or weight detection unit to monitor the discharge quantity and position in real time, ensuring that there is no leakage, stacking, or misalignment. When an abnormal discharge is detected, the system can automatically alarm and suspend operation, thereby preventing defective products from flowing into subsequent processes and further improving the yield rate and automation level of production.

[0038] Reference Figure 1 and Figure 2As shown, the dispensing module 400 is installed on both sides of the worktable 100. The dispensing module 400 includes an application head 410, which can move along the X-axis, Y-axis, and / or Z-axis of the worktable 100 under the drive of the drive mechanism to pick up the adhesive ring from the adhesive ring dispensing module 300 and accurately place the adhesive ring at the joint between the pressure ring and the lens of the lens element 900. To achieve high-precision control, the application head 410 is installed on a multi-degree-of-freedom motion platform. The drive mechanism is composed of a lead screw, linear guide, and servo motor, thereby achieving stable and precise three-dimensional motion. A heating module 411 is installed on the application head 410 to heat and melt the outer film 920 of the adhesive ring, so that the adhesive 910 is released and fills the joint, realizing the integrated operation of dispensing and heating.

[0039] The transport module 500 is mounted on the workbench 100 and is used to automatically transport the loading tray 211 of the loading module 200 to the dispensing position of the dispensing module 400, thereby realizing the automatic transfer and positioning of the lens element 900. The transport module 500 can precisely cooperate with the loading module 200 and the dispensing module 400 to avoid manual handling errors and improve the automation level and operational stability of the overall production process.

[0040] The positioning module 600 is mounted on the dispensing module 400 and is used to detect and position the center of the lens, so that the dispensing module 400 can accurately place the adhesive ring based on the positioning result after the transfer is completed. The positioning module 600 is preferably a CCD camera detection system, which can identify the edge of the lens and calculate the center point of the lens, thereby providing accurate position information for the dispensing module 400 and avoiding poor adhesion of the adhesive ring due to deviation.

[0041] It should be noted that in this embodiment, the drive mechanism and drive components are all in the form of lead screw and screw combined with slide rail and slider drive, which ensures the stability and repeatability of the motion. Of course, in other embodiments, cylinders, electric cylinders or direct drive motors or other drive structures can be selected according to specific needs, so as to achieve flexible application under different working conditions.

[0042] Reference Figure 2 , Figure 3 As shown, the glue applicator 410 includes a glue rod 4100. Near the bottom of the glue rod 4100, an annular flange 420 is provided. At the bottom of the annular flange 420, an adsorption groove 421 for adsorbing the glue ring is formed. The adsorption groove 421 has a semi-circular cross-section to conform to the arc shape of the glue ring, thereby improving the stability of adsorption. Of course, it can also be designed according to the specific cross-sectional shape of the glue ring, such as a V-shaped groove or a rectangular groove. The adsorption groove 421 is connected to an adsorption channel 422, which is connected to a negative pressure source through a pipe. This allows for the firm adsorption of the glue ring under negative pressure, preventing it from falling off during transport.

[0043] Specifically, to melt the outer film 920, the heating module 411 includes a heating wire 4111, which is closely attached to the bottom of the annular wing edge 420. The heating power is adjusted in real time by a temperature controller to ensure that the outer film 920 melts quickly without adversely affecting the performance of the adhesive 910. In other embodiments, the heating module 411 may also employ an electric heating film, an infrared heating element, or a miniature hot air heating device to meet different process requirements.

[0044] Preferably, a tapered flange 430 is provided at the bottom of the adhesive rod 4100 and below the annular flange 420. A first annular air chamber 431 and a second annular air chamber 432 are sequentially formed inside the tapered flange 430. The first annular air chamber 431 and the second annular air chamber 432 are respectively connected to an air source through a gas flow channel 4333. A first outlet 4311 is provided on the first annular air chamber 431, and a second outlet 4322 is provided on the second annular air chamber 432. The first outlet 4311 and the second outlet 4322 face opposite sides of the seam between the pressure ring and the lens. This layered double-chamber structure creates a bidirectional guiding airflow when the adhesive 910 is released. The airflow is symmetrical and stable, avoiding deviation or excessive local stress that may occur under the action of a single airflow, allowing the adhesive 910 to spread evenly along a predetermined direction at the seam.

[0045] Specifically, the first annular air chamber 431 is located closer to the upper region of the adhesive 910. The airflow generated by its first outlet 4311 can directly act on the upper flow area of ​​the adhesive 910, limiting and guiding the edge of the adhesive 910, thus controlling the diffusion of the adhesive 910 at the seam within a reasonable range. The second annular air chamber 432 is located below, and the airflow ejected from its second outlet 4322 is directed towards the inner region of the adhesive 910, thereby continuously maintaining the shape and position of the adhesive 910 during its further flow and curing. This dual control method effectively prevents the adhesive 910 from overflowing onto the lens surface, avoiding a decrease in light transmittance or optical distortion due to contamination. It also inhibits the adhesive 910 from excessively climbing up the side wall of the pressure ring, ensuring a neat appearance and regular seam lines in the finished product.

[0046] Furthermore, the conical flange 430's structural design guides and constricts airflow, allowing the airflow ejected from the air chamber to form a flow field distribution that better conforms to the joint boundary under the constraint of the lower outer edge of the conical flange 430, thereby improving the targeting and stability of the airflow. Through the connection between the gas channel 4333 and the air source, the airflow pressure and flow rate can be adjusted to meet the dispensing needs of lens elements 900 of different sizes or adhesives 910 of different viscosities, further enhancing the system's adaptability and flexibility. Thus, this structure not only ensures uniform adhesive layer thickness and neat edges after dispensing but also improves the controllability and repeatability of the dispensing process, significantly increasing production consistency and product yield.

[0047] Preferably, the annular wing edge 420 is arranged in a mushroom shape. This design not only provides protection and enhances adsorption and stability, but also guides the distribution of airflow and light in the overall structure. A ring-shaped UV light source 440 is installed near the inner side of the bottom of the annular wing edge 420. This UV light source 440 can provide circumferential irradiation towards the adhesive ring, ensuring comprehensive coverage and curing of the adhesive 910 at the joint. Compared to traditional single-point or single-sided UV irradiation, this ring-shaped light source layout avoids the problem of insufficient local irradiation, ensuring that the adhesive layer is uniformly illuminated and cured synchronously throughout the entire joint area, thereby reducing the risk of stress concentration or cracking due to uneven curing.

[0048] A reflective cavity 450 is formed on the inner side of the tapered convex edge 430 and the annular wing edge 420. The inner wall of the reflective cavity 450 is covered with a highly reflective film 460, which can perform secondary reflection and multiple scattering of UV light, further improving the utilization rate of light and ensuring that the adhesive 910 is continuously irradiated. In this way, even if there is some obstruction or curved structure at the joint, the UV light can achieve a supplementary lighting effect through multi-angle reflection, avoiding curing dead corners. Through this efficient optical design, the adhesive 910 can be cured in a short time, significantly reducing the waiting time in the production process, improving production efficiency, and also improving the reliability and stability of the dispensing process.

[0049] As an optional embodiment, an abutment portion 470 is provided on the outer side of the annular wing along 420. The abutment portion 470 is made of flexible rubber and has an overall conical shape that is turned upwards and gradually increases in diameter. This design allows the abutment portion 470 to gradually conform to the inner groove sidewall of the lens element 900 when the adhesive head 410 is pressed down, and to produce flexible deformation. Through this conforming deformation, a sealing effect is achieved. Under the combined action of the wind force of the first outlet 4311 and the second outlet 4322, the abutment portion 470 can form a relatively closed microcavity environment at the joint between the pressure ring and the lens, thereby increasing the penetration pressure of the adhesive 910 in the gap, allowing the adhesive 910 to penetrate deeper into the joint, fill the tiny gaps, and enhance the bonding strength and sealing performance. At the same time, this locally closed environment can also create a more stable guiding effect for the airflow on both sides of the joint, preventing airflow dispersion, further improving the uniformity of the adhesive 910's shaping and the consistency of its curing, and ensuring a more reliable bonding effect.

[0050] On the other hand, the contact part 470 also provides guidance during the positioning of the lens element 900, keeping the glue applicator 410 and the pressure ring concentric. This avoids inaccurate dispensing due to slight deviations, thus ensuring high precision and repeatability of the dispensing. Furthermore, the flexible rubber material can adapt to tolerance variations of different lens element models 900 during contact, automatically compensating for dimensional deviations through deformation, thereby improving the compatibility of the device. The flexibility of the contact part 470 also acts as a buffer, preventing hard impacts on the lens surface or the edge of the pressure ring due to excessively rapid downward pressure of the glue applicator 410 or positioning errors. This effectively prevents scratches, breakage, and other defects, further improving the safety and yield of the dispensing operation.

[0051] In some embodiments, the contact portion 470 can also be designed as a multi-layer composite structure according to process requirements. For example, the inner layer is made of flexible rubber to ensure sealing, and the outer layer is made of wear-resistant polyurethane or silicone to enhance durability and chemical corrosion resistance. This can not only meet the requirements of long-term stable use, but also maintain good deformation recovery force in multiple dispensing cycles, further improving the service life and stability of the device.

[0052] Reference Figure 3As shown, the bottom of the adhesive rod 4100 is equipped with a pressure head 700, which is made of flexible rubber material. This pressure head 700 provides sufficient support while offering a certain degree of cushioning. The bottom of the pressure head 700 has a concave, curved structure. This curved design allows for better conformity to the shape of the lens, creating a multi-point force distribution during contact. This prevents lens breakage or displacement caused by uneven force distribution due to single-point contact, thus ensuring the stability of the fixed positioning. When the pressure head 700 contacts the lens surface, the concave structure also creates a small vacuum zone locally, making the lens and the pressure ring more stable under pressure. This facilitates stable operation during subsequent placement of the adhesive ring and filling of the adhesive 910.

[0053] A guide rod 710 is integrally connected to the pressure head 700, and the guide rod 710 is slidably disposed on the inner wall of the rubber rod 4100 along the axial direction of the rubber rod 4100. This sliding guide design effectively prevents the pressure head 700 from deflecting or tilting during up and down movement, ensuring that it always maintains a vertical downward pressing state, thereby further improving the limiting accuracy and reliability. At the same time, a low-friction bushing or ball bearing structure can be provided between the guide rod 710 and the rubber rod 4100 to reduce sliding friction, extend service life, maintain smoothness and consistency of operation, and avoid positioning errors caused by uneven friction.

[0054] An elastic element 711 is installed between the pressure head 700 and the glue rod 4100. In this embodiment, the elastic element 711 is a helical spring, but in other embodiments, a spring sheet, a wave spring, or a rubber elastic pad can also be used. Different types of elastic elements 711 can adapt to different process requirements. For example, helical springs have strong restoring force and long service life, wave springs can provide a larger elastic stroke within a limited space, and rubber elastic pads can reduce vibration transmission while providing cushioning. In the initial state, the elastic element 711 drives the pressure head 700 to remain in an outward extended state, providing a stable elastic preload during the pressing of the lens, thereby reliably limiting the lens element 900 and preventing the dispensing accuracy from being affected by slight lens wobbling or positional displacement.

[0055] Meanwhile, a pressure sensor can be integrated into the pressure head 700 to monitor the clamping force applied to the lens in real time. Based on the feedback signal from the pressure sensor, the system can dynamically adjust the pressing speed of the drive mechanism or the preload of the elastic element 711 to prevent excessive force from the pressure head 700, which could lead to lens breakage or deformation of the clamping ring. This design, combining force control and position control, not only ensures safety but also improves the precision of automated control, enabling the equipment to be compatible with lenses of different thicknesses and materials.

[0056] In the specific dispensing process, the system first precisely positions the lens and the pressure ring using the positioning module 600. Then, the pressure head 700 gently and stably presses down on the lens for positioning. At this point, the pre-tightening force provided by the elastic element 711 prevents the lens from shifting without causing excessive pressure. Next, the adhesive applicator 410 accurately places a measured amount of adhesive ring at the seam, and the heating module 411 breaks the outer membrane 920 to release the adhesive 910. Due to the stabilizing and positioning effect of the pressure head 700, the adhesive 910 is evenly distributed in the gap between the pressure ring and the lens, preventing displacement, accumulation, or leakage. Finally, under the irradiation of the UV light source 440, the adhesive 910 quickly cures. The entire dispensing, pressing, and curing process is completed continuously at the same station, achieving truly integrated automated operation. This process not only significantly improves production efficiency and reduces manual intervention, but also effectively ensures the consistency of dispensing and a high yield of finished products.

[0057] Reference Figures 7-9 As shown, the transport module 500 includes a first transport Y-axis structure 510, a first transport X-axis structure 520, and a second transport Y-axis structure 530. These three structures work together through precise transmission and control to automatically transport and transfer the lens element 900. First, the first transport Y-axis structure 510 extends into the loading rack 210 to remove the target loading tray 211 one by one from the stacked loading trays 211. Specifically, the first transport Y-axis structure 510 includes a drive mechanism and a moving disk 511. The drive mechanism is a transmission assembly consisting of a lead screw and a servo motor, enabling smooth Y-axis telescopic movement.

[0058] One end of the movable disk 511 is fixed to the slide of the drive mechanism. Driven by the drive mechanism, it moves along the Y-axis and can smoothly insert into the gap between adjacent loading disks 211. When the movable disk 511 extends in, it just lifts the bottom of the target loading disk 211, separating it from the loading disk 211 below and lifting it up. Then, through the Y-axis retraction action, the target loading disk 211 is brought out to the preset handling position, ensuring the accurate removal of a single disk without affecting the stacking stability of the other loading disks 211.

[0059] After the first transport Y-axis structure 510 removes the loading tray 211, the first transport X-axis structure 520 begins operation. The first transport X-axis structure 520 includes a main frame 521, a sliding frame 522, and a clamping cylinder 523. The main frame 521 is horizontally mounted on the worktable 100 along the X-axis direction, forming a stable cross-beam structure. The sliding frame 522 is mounted on the main frame 521 via a slide rail and can move translationally along the X-axis direction under the drive of the drive mechanism.

[0060] A pair of clamping cylinders 523 are mounted on the sliding frame 522 and can extend into the effective working area of ​​the sliding frame 522 under the action of the drive component. Clamping claws are installed at their ends and can be pneumatically controlled to open or close. In specific operation, after the loading tray 211 is moved to the designated position by the first transport Y-axis structure 510, the clamping claws of the clamping cylinders 523 clamp the lens element 900 on the loading tray 211, firmly fixing the lens element 900 through synchronous clamping actions at both ends. Subsequently, driven by the drive mechanism, the sliding frame 522 slides smoothly along the X-axis of the main frame 521, transporting the clamped lens element 900 to the corresponding handover position of the second transport Y-axis structure 530.

[0061] The second transport Y-axis structure 530 is arranged on both sides of the worktable 100, corresponding to the left and right dispensing modules 400 respectively. This structure also includes a drive mechanism and a transport tray 531. The drive mechanism drives the transport tray 531 to extend and retract along the Y-axis direction, thereby accurately docking with the lens element 900 conveyed from the first transport X-axis structure 520. The surface of the transport tray 531 is provided with a special groove 5311, the size of which matches the lens element 900, for supporting and positioning the lens element 900.

[0062] To further improve stability during handling, a negative pressure hole 311 can be added to the groove 5311 of the transport tray 531. This hole, connected to a vacuum pump, creates an adsorption force to fix the lens element 900. Alternatively, mechanical clips can be installed around the groove 5311, using elastic teeth for clamping and fixing. These fixing measures can effectively prevent the lens element 900 from shaking or shifting during high-speed handling or positioning before dispensing, ensuring the final dispensing accuracy.

[0063] The entire handling process achieves continuous and coordinated movements: the first handling Y-axis structure 510 moves the trays out one by one → the first handling X-axis structure 520 completes the horizontal transfer and handover → the second handling Y-axis structure 530 delivers the lens element 900 into the dispensing station. Through this modular division of labor and linkage design, not only is the automated transfer of the lens element 900 achieved, but parallel operation between the dispensing modules 400 on the left and right sides is also possible, thus supporting synchronous dispensing operations for two sets of lens elements 900, making the entire worktable 100 more compact. Compared with single-station dispensing, this structure significantly improves overall production efficiency and reduces waiting time.

[0064] Preferred, refer to Figure 1 , Figure 5As shown, part of the outer tube 310 is located inside the worktable 100, and the other part extends outside the worktable 100, facilitating manual replenishment of the rubber rings. The top outlet of the outer tube 310 is located directly below the moving path of the rubber applicator 410, ensuring that the rubber applicator 410 can accurately remove the rubber rings. The drive unit is connected to the outer tube 310, enabling the rubber rings to be ejected one by one and precisely aligned.

[0065] As an optional embodiment, the outer tube 310 is hollow, and multiple negative pressure holes 311 are vertically spaced along the inner wall of the outer tube 310. These negative pressure holes 311 are evenly distributed around the circumference of the outer tube 310 and are connected to the hollow cavity of the outer tube 310 via microchannels. The hollow cavity of the outer tube 310 is then connected to a negative pressure source. Thus, when multiple rubber rings are stacked inside the outer tube 310, the negative pressure holes 311 can form a ring-shaped adsorption force on the outer wall of the rubber rings, stably adsorbing the rubber rings onto the inner wall of the outer tube 310. This serves as a limiting and guiding function, preventing the rubber rings from tilting, shifting, or even getting stuck due to their own weight or pushing action.

[0066] Meanwhile, this negative pressure adsorption method can prevent the outer membrane 920 of the rubber ring from being damaged by friction, ensuring the integrity and uniformity of the rubber ring during the ejection process, thereby ensuring the consistency of subsequent dispensing quality. Compared with simply relying on mechanical limiting, this structure can achieve a gentler and more precise limiting effect, adapting to rubber rings of different sizes or materials.

[0067] In some embodiments, the positioning module 600 includes a CCD camera, which is vertically mounted on the movable frame 401 of the dispensing module 400 and corresponds to the working area of ​​the dispensing head. The CCD camera can acquire images of the lens in real time and automatically identify and locate the center position, edge contour, and angle deviation through software algorithms, thereby providing a precise coordinate reference for the dispensing head.

[0068] Furthermore, the positioning module 600 can also combine sub-pixel edge detection algorithms in machine vision to perform high-precision fitting of the lens edge, with positioning accuracy reaching the micrometer level, ensuring that the rubber ring is placed completely concentrically with the lens seam.

[0069] In addition, in other embodiments, the positioning module 600 can be replaced with a laser displacement sensor to detect height and position by scanning the reflected light from the lens surface; or an infrared identifier can be used to complete positioning by identifying differences in the optical reflectivity of different materials. These multiple detection schemes can be flexibly selected according to different application scenarios, giving the system high versatility and scalability.

[0070] As an optional embodiment, refer to Figure 10As shown, to prevent the adhesive 910 from adhering to the surface of the pressure head 700 during operation and affecting the subsequent dispensing accuracy, a wiping component 800 is installed on the worktable 100 at the positions corresponding to the dispensing modules 400 on both sides. The wiping component 800 includes a bidirectional cylinder 810, and a wiping block 812 is fixedly connected to the drive end of the bidirectional cylinder 810. The wiping block 812 is set to correspond to the movement trajectory of the pressure head 700. After the pressure head 700 completes the dispensing operation, it can contact the wiping block 812 under the drive mechanism to achieve automatic wiping.

[0071] The wiping block 812 can be made of flexible rubber, high-density sponge, or flexible brush to ensure effective removal of glue 910 residue without damaging the surface of the pressure head 700. A collection tank 820 is located below the cylinder of the bidirectional cylinder 810. The collection tank 820 can promptly collect glue 910 residue that falls off during the wiping process, preventing glue 910 from contaminating the internal environment of the workbench 100 and interfering with subsequent processes.

[0072] Furthermore, in other embodiments, the adhesive-wiping component 800 can be replaced by a rotating brush structure, achieving more efficient surface cleaning through motor-driven rotation; or a structure with a microporous adsorption pad can be used, combined with vacuum negative pressure to adsorb and collect residual adhesive. These improvements can further enhance automatic cleaning efficiency, extend the continuous working time of the equipment, and ensure long-term stable operation of the dispensing process.

[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic dispensing machine for laser radar lenses, characterized in that, include: Workbench (100); The loading module (200) is located in the middle of the workbench (100). The loading module (200) includes a loading rack (210). Multiple loading trays (211) are stacked on the loading rack (210). The loading trays (211) are used to place lens elements (900) with installed pressure rings and lenses. A rubber ring ejection module (300) is set on the workbench (100) for ejecting a single rubber ring one by one. The rubber ring is filled with UV-curable adhesive (910) and covered with a heat-melting outer film (920). A dispensing module (400) is disposed on both sides of the worktable (100). The dispensing module (400) includes a dispensing head (410). The dispensing head (410) can move along the X-axis, Y-axis and / or Z-axis of the worktable (100) under the drive of the driving mechanism to pick up the rubber ring from the rubber ring discharge module (300) and accurately place the rubber ring at the joint between the pressure ring and the lens of the lens element (900). A heating module (411) is provided on the dispensing head (410) for heating and melting the outer film (920) of the rubber ring, so that the glue (910) is released and fills the joint. The transport module (500) is set on the workbench (100) and is used to automatically transport the loading tray (211) of the loading module (200) to the dispensing position of the dispensing module (400) so as to realize the automatic transfer and positioning of the lens element (900). A positioning module (600) is disposed on the dispensing module (400) and is used to detect and position the center position of the lens so that the dispensing module (400) can accurately place the adhesive ring based on the positioning result after the dispensing module (400) has completed the transportation.

2. The automatic dispensing machine for laser radar lenses according to claim 1, characterized in that, The glue applicator (410) includes a glue rod (4100), and an annular wing edge (420) is provided near the bottom of the glue rod (4100). An adsorption groove (421) for adsorbing the glue ring is provided at the bottom of the annular wing edge (420). An adsorption channel (422) is provided in the adsorption groove (421) and connected to the adsorption channel (422). The adsorption channel (422) is connected to a negative pressure source.

3. The automatic dispensing machine for laser radar lenses according to claim 2, characterized in that, The heating module (411) includes a heating wire (4111) disposed at the bottom of the annular wing edge (420).

4. The automatic dispensing machine for laser radar lenses according to claim 3, characterized in that, A tapered convex edge (430) is provided at the bottom of the rubber rod (4100) and below the annular wing edge (420). A first annular air chamber (431) and a second annular air chamber (432) are sequentially opened inside the tapered convex edge (430). The first annular air chamber (431) and the second annular air chamber (432) are respectively connected to the air source through the gas flow channel (4333). A first outlet (4311) is provided on the first annular air chamber (431), and a second outlet (4322) is provided on the second annular air chamber (432). The first outlet (4311) and the second outlet (4322) are respectively directed toward the two sides of the joint between the pressure ring and the lens.

5. The automatic dispensing machine for laser radar lenses according to claim 4, characterized in that, The annular wing edge (420) is arranged in a mushroom head shape. A ring-shaped UV light source (440) is installed at the bottom of the annular wing edge (420) near the inner side. A reflective cavity (450) is formed between the conical convex edge (430) and the inner side of the annular wing edge (420). A reflective film (460) is covered inside the reflective cavity (450). And / or, the outer side of the annular wing edge (420) has an abutment portion (470), the abutment portion (470) is flared outward and the diameter gradually increases, the abutment portion (470) can be flexibly deformed to abut against the inner wall of the groove where the lens element (900) is mounted on the pressure ring and the lens.

6. The automatic dispensing machine for laser radar lenses according to claim 5, characterized in that, The bottom of the rubber rod (4100) is provided with a pressure head (700), and a guide rod (710) is fixedly connected to the pressure head (700). The guide rod (710) is slidably disposed on the rubber rod (4100) along the axial direction of the rubber rod (4100). An elastic element (711) is provided between the pressure head (700) and the rubber rod (4100). The elastic element (711) is used to drive the pressure head (700) to remain in an outwardly extended state in the initial state and to provide a stable elastic pre-tightening pressure during the pressing of the lens.

7. The automatic dispensing machine for laser radar lenses according to claim 1, characterized in that, The rubber ring dispensing module (300) includes an outer tube (310) and a driving component. A portion of the outer tube (310) is located inside the worktable (100), and another portion extends out of the worktable (100). The top outlet of the outer tube (310) is located directly below the moving path of the glue applicator (410). The driving component is connected to the outer tube (310) and is used to drive the rubber rings to extend one by one from the top outlet of the outer tube (310).

8. The automatic dispensing machine for lidar lenses according to any one of claims 1-7, characterized in that, The transport module (500) includes a first transport Y-axis structure (510), a first transport X-axis structure (520), and a second transport Y-axis structure (530). The first transport Y-axis structure (510) is used to extend into the loading rack (210) and remove the loading trays (211) one by one. The first transport X-axis structure (520) includes a main frame (521), a sliding frame (522), and a clamping cylinder (523). The main frame (521) is mounted on the workbench (100) along the X-axis direction, and the sliding frame (522) is slidably mounted on the main frame (521). The sliding frame (522) can move along the X-axis under the drive of the driving mechanism. The clamping cylinder (523) is set on the main frame (521) and used to clamp and fix the lens element (900) to transport it to the second transport Y-axis structure (530) on both sides. The second transport Y-axis structure (530) is set along the Y-axis and is located on both sides of the worktable (100). The second transport Y-axis structure (530) is used to receive the lens element (900) clamped by the clamping cylinder (523) to transport it to the dispensing position of the corresponding dispensing module (400). And / or, the outer tube (310) is hollow, and the inner wall of the outer tube (310) has multiple negative pressure holes (311) in the vertical direction, and the hollow cavity of the outer tube (310) is connected to the negative pressure source.

9. The automatic dispensing machine for laser radar lenses according to claim 8, characterized in that, The positioning module (600) includes a CCD camera, which is mounted vertically on the movable frame (401) of the dispensing module (400).

10. The automatic dispensing machine for laser radar lenses according to claim 8, characterized in that, The workbench (100) is provided with a glue-wiping component (800) at the position corresponding to the dispensing modules (400) on both sides. The glue-wiping component (800) includes a bidirectional cylinder (810). A wiping block (812) is provided on the connecting block (811) at the drive end of the bidirectional cylinder (810). A collection groove (820) is provided on the cylinder body of the bidirectional cylinder (810) and directly below the wiping block (812).

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