Automatic assembling device and method for distance measuring module

Abstract

The invention discloses an automatic distance measuring module assembling device which comprises a first driving module, an operation jig is connected to the first driving module in a sliding mode, and the first driving module drives the operation jig to move in the X-axis direction and the Y-axis direction; the operation jig comprises a fixing jig (5) and an adjusting jig (6) arranged opposite to the fixing jig (5), at least one first optical assembly is installed on the fixing jig (5), at least one second optical assembly is installed on the adjusting jig (6), the adjusting jig (6) comprises a fine adjustment mechanism, and the fine adjustment mechanism is used for adjusting the first optical assembly and the second optical assembly. The first optical assembly is used for driving the second optical assembly to carry out fine adjustment in the X-axis direction, the Y-axis direction and the Z-axis direction, and the first optical assembly is inserted into the second optical assembly to be preliminarily assembled to form a to-be-calibrated product; comprising an optical observation system and a dispensing and curing mechanism, is used for observing, dispensing and curing the to-be-calibrated product, and has the advantages that automatic calibration, dispensing and curing are realized, and the production efficiency and the space utilization rate are improved.

Description

Technical Field

[0001] This invention relates to the field of ranging module assembly equipment technology, and specifically to an automatic ranging module assembly device and its assembly method. Background Technology

[0002] This invention relates to the field of high-precision optical module assembly technology, and particularly to an automatic assembly device and method for a ranging module, which is especially suitable for the emission and focusing assembly of a ranging module.

[0003] One of the core steps in the production of ranging modules is optical path calibration of the laser emitting component (i.e., "emission adjustment") or receiving sensing component (i.e., "focus adjustment") to ensure the alignment of the laser optical axis or the accuracy of the focal plane. Currently, this process is generally performed manually. Specifically, operators need to manually turn the knobs mounted on the fine-tuning platform, observe the laser spot on the distant calibration plate with the naked eye, and repeatedly adjust it based on experience until the spot moves to the preset target position.

[0004] This traditional manual assembly method has the following significant drawbacks: 1. Low level of automation and efficiency: The entire calibration process heavily relies on the operator's experience and dexterity, which is not only labor-intensive but also requires a long time to train a skilled worker. More importantly, since the fine-tuning platform can usually only install one product at a time, the production efficiency is low, making it difficult to meet the needs of large-scale manufacturing.

[0005] 2. Insufficient stability of calibration accuracy: Manual adjustment inevitably introduces subjective errors. Calibration results from different operators, or even from the same operator in different batches, will vary, making it difficult to guarantee the consistency and reliability of the product's optical performance.

[0006] 3. The equipment occupies a large area and has low space utilization: Since the laser object distance of the ranging module is usually between 5 and 10 meters, in order to simulate the real use environment and conduct effective observation, the calibration plate must be placed at a corresponding distance from the product. This results in the entire calibration station occupying a large amount of production space, with extremely low space utilization, becoming a bottleneck in the production line layout.

[0007] To improve the automation level of ranging modules and save space, there is an urgent need to provide an automatic assembly device and assembly method for ranging modules to improve product assembly efficiency. Summary of the Invention

[0008] This invention provides an automatic assembly device and method for a ranging module. By automatically aligning the product to be calibrated and using an optical observation system consisting of a teleconverter, an observation camera, and a calibration plate, the assembly efficiency of the product to be calibrated can be improved, and the distance to the calibration plate can be reduced by using a teleconverter. It has a small footprint, good effect, simple structure, and low cost.

[0009] One technical solution adopted in this invention is: An automatic assembly device for a ranging module includes an automatic calibration system, an optical observation system, and an adhesive dispensing and curing mechanism; The automatic calibration system includes a first drive module with an operating fixture slidably connected to it. The first drive module drives the operating fixture to move along the X-axis and Y-axis. The operating fixture includes a fixed fixture and an adjusting fixture opposite to the fixed fixture. At least one first optical component is mounted on the fixed fixture, and at least one second optical component is mounted on the adjusting fixture. The adjusting fixture includes a fine-tuning mechanism for driving the second optical component to perform fine-tuning in the X-axis, Y-axis, and Z-axis directions. The first optical component is inserted into the second optical component for initial assembly to form the product to be calibrated. The optical observation system includes a magnifying lens, an observation camera, and a calibration plate; the light from the product to be calibrated is projected onto the calibration plate through the magnifying lens, and the observation camera captures the light spot image on the calibration plate; The dispensing and curing mechanism includes a driving mechanism and a dispensing and curing component; the driving mechanism drives the dispensing and curing component to move directly above the joint of the product to be calibrated to perform dispensing and curing. It also includes a control system that is electrically connected to the automatic calibration system, the optical observation system, and the dispensing and curing mechanism.

[0010] The fixing fixture includes a mounting plate and a mounting platform fixed to one end of the mounting plate; the mounting platform consists of two side plates and a horizontal plate; one end of the horizontal plate has at least one first mounting port, in which a telescopic cylinder is installed, the piston rod of the telescopic cylinder is hinged to one end of a connector, and the other end of the connector has a second mounting port; a first optical component is installed in the second mounting port; a T-shaped connector is also fixed to the top of the telescopic cylinder, and the top two side walls of the T-shaped connector are respectively hinged to the side walls of the connector via two connecting rods.

[0011] The adjustment fixture is fixed to the other end of the mounting plate; the adjustment fixture includes an adjustment platform and a fine-tuning mechanism supporting the adjustment platform; the adjustment platform is provided with at least one first mounting slot, in which the second optical component is installed; the fine-tuning mechanism includes a three-axis servo module, which is used to drive the second optical component to make fine adjustments along the X-axis, Y-axis and Z-axis directions.

[0012] The second mounting port corresponds to the position of the first mounting slot, so that the first optical component and the second optical component can be assembled one-to-one.

[0013] The first optical component includes a laser emitter, and the second optical component includes an optical component assembled with the laser emitter.

[0014] An automatic assembly method for a ranging module, using the aforementioned automatic assembly device for a ranging module, includes the following steps: S1: Driven by the first driving module, the first optical component and the second optical component are moved to the front of the magnifying lens; S2: The first optical component and the second optical component are initially assembled to form the kth product to be calibrated, and adhesive is applied to the joint of the product to be calibrated; the k+1 to Nth first optical components and the second optical components are in an unassembled state; S3: The product to be calibrated emits a laser, which forms a light spot on the calibration surface through the magnifying lens and is captured by the observation camera 13; S4: Based on the deviation between the light spot image and the preset target, the position of the second optical component is finely adjusted by the fine-tuning mechanism until the light spot conforms to the calibration target, thus forming a calibrated product; S5: Irradiate and cure the adhesive at the joint of the calibrated product to complete the curing of the current kth calibrated product; S6: If k is less than N, then let k = k + 1 and repeat steps S2 to S5; otherwise, complete all assembly processes and unload the materials.

[0015] In step S1, when the k-th product to be calibrated is unassembled, the piston rod of the telescopic cylinder retracts, driving the connector to the open state; during assembly, the piston rod of the telescopic cylinder extends, driving the connector to perform a flipping motion, causing the first optical component mounted on the connector to be inserted into the first optical component, and the T-shaped connector is used to limit the connector to a horizontal state; the k+1 to the N-th products to be calibrated are in an unassembled state.

[0016] In step S5, after the current Nth calibration product is cured, the first drive module drives the adjustment fixture to separate from the fixed fixture, installs the PCB board in the second mounting port of the connector, and moves the operation fixture to the front of the teleconverter through the first drive module. The process of S2-S5 is repeated to complete the focusing action of N calibration products.

[0017] In step S4, the calibration target for the emission adjustment is the center point of the calibration plate; the function of the control system is to adjust the light spot to coincide with the preset center point in order to achieve precise alignment of the optical axis.

[0018] In step S4, the calibration target for focusing is the area between two parallel calibration lines on the calibration plate; in step S4, the function of the control system is to adjust the light spot to fall into the area between the two parallel calibration lines, so as to achieve precise adjustment of the focal plane.

[0019] Compared with existing technologies, the advantages of this invention are as follows: 1. It achieves automated calibration, significantly improving production efficiency. Through an integrated control system, it realizes automated operation of the entire process of product assembly, transfer, optical path calibration, dispensing, and curing. In particular, the multi-station design on the adjustment platform, combined with the precise transfer of the first drive module, enables the equipment to operate continuously in a "calibration-curing" cycle without manual intervention or waiting, completely changing the traditional single-piece manual operation mode, and improving production efficiency by orders of magnitude; 2. Improved calibration accuracy: The optical observation system replaces the traditional method that relies on human observation and touch. The system can capture light spot images in real time and perform high-precision algorithm analysis, thereby driving the servo module to perform micron-level precise compensation, effectively eliminating human error; 3. Saves space: By introducing the magnifying glass into the observation optical path and placing it between the product to be calibrated and the calibration plate, the calibration optical path, which is 5-10 meters long, is compressed into a compact equipment, significantly improving space utilization. At the same time, the compact footprint reduces the overall production cost of the ranging module; 4. This device can be used as a standalone complete unit or a dual-station unit, improving equipment assembly efficiency. The assembled equipment has the advantages of fast calibration speed and high accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the embodiments 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.

[0021] Figure 1This is a schematic diagram of the automatic optical path calibration device of the present invention.

[0022] Figure 2 This is a top view of the automatic optical path calibration device of the present invention.

[0023] Figure 3 This is a schematic diagram of the operating fixture of the present invention.

[0024] Figure 4 This is a schematic diagram of the adjustment platform of the present invention.

[0025] Figure 5 This is a connection diagram of the telescopic cylinder and connecting parts of the present invention.

[0026] Figure 6 This is a schematic diagram of the observation camera of the present invention.

[0027] Figure 7 This is a schematic diagram of the calibration plate of the present invention.

[0028] Figure 8 This is a schematic diagram of the dispensing and curing assembly of the present invention.

[0029] Reference numerals: 1-Base, 2-X-axis servo module, 3-First auxiliary guide rail, 4-Y-axis servo module, 5-Fixing fixture, 501-Mounting plate, 502-Mounting platform, 5021-First mounting port, 503-Connector, 5031-Second mounting port, 504-Telescopic cylinder, 5041-T-shaped connector, 5042-Piston rod, 5043-Connecting rod, 505-Laser emitter, 6-Adjusting fixture, 601-Adjusting platform, 602-Rectangular mounting platform, 6021-Y1 axis servo module, 60 22-X1 axis servo module, 604-first mounting slot, 7-Z axis servo module, 701-first connecting plate, 702-second connecting plate, 8-bracket, 801-first support column, 802-second support column, 803-bracket crossbar, 804-third connecting plate, 8041-fixed part, 8042-connecting part, 9-Y2 axis servo module, 901-first connecting rod, 9011-mounting slot, 10-dispenser, 11-UV irradiator, 12-magnifying lens, 13-observation camera, 14-calibration plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present invention shown in and described with reference to the drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0031] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0032] Furthermore, in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Example 1 like Figure 1-5 As shown, this embodiment provides an automatic assembly device for a self-range measurement module, including an automatic calibration system, an optical observation system, and an adhesive dispensing and curing mechanism; The automatic calibration system includes a first drive module, on which an operating fixture is slidably connected, driving the operating fixture to move along the X-axis and Y-axis. The first drive module includes an X-axis servo module 2, a first auxiliary guide rail 3, and a Y-axis servo module 4 mounted on the X-axis servo module 2 and the first auxiliary guide rail 3, with the operating fixture slidably mounted on the Y-axis servo module 4. The X-axis servo module 2 drives the Y-axis servo module 4 and the operating fixture thereon to move along the X-axis; the operating fixture moves along the Y-axis under the drive of the Y-axis servo module 4, allowing different products to be calibrated to be positioned directly in front of the magnifying glass 12, ensuring that the light emitted by the products can pass through the magnifying glass 12. The multi-station setup on the operating fixture also enables sequential, automatic calibration and curing of multiple products, significantly improving the equipment's assembly efficiency.

[0034] The operating fixture includes a fixed fixture 5 and an adjusting fixture 6 disposed opposite to the fixed fixture 5. At least one first optical component is installed on the fixed fixture 5, and at least one second optical component is installed on the adjusting fixture 6. The first optical component is inserted into the second optical component for preliminary assembly to form the product to be calibrated. In this embodiment, the first optical component is a laser emitter 505, and the second optical component is an adjusting emission component assembled with the laser emitter 505.

[0035] The fixing fixture 5 includes a mounting plate 501 and a mounting platform 502 fixed to one end of the mounting plate 501. The mounting platform 502 consists of two side plates and a horizontal plate. At least one first mounting port 5021 is opened at one end of the horizontal plate (the end near the adjusting fixture 6). A telescopic cylinder 504 is installed in the first mounting port 5021. The piston rod 5042 of the telescopic cylinder 504 is hinged to one end of a connector 503. A second mounting port 5031 is opened on the end face of the other end of the connector 503. A laser emitter 505 is installed in the second mounting port 5031. A T-shaped connector 5041 is also fixed to the top of the telescopic cylinder 504. The two side walls of the top of the T-shaped connector 5041 are hinged to the side walls of the connector 503 by two connecting rods 5043 respectively.

[0036] The telescopic cylinder 504 can drive the laser emitter 505 to rotate from an open to a horizontal state, so that the laser emitter 505 can be inserted into the back of the laser emission assembly. In the horizontal state, the T-shaped connector 5041 also supports and limits the connector 503.

[0037] An adjustment fixture 6 is installed at the other end of the mounting plate 501 and at a position relative to the mounting platform. The adjustment fixture 6 includes an adjustment platform 601 and a fine-tuning mechanism that supports the adjustment platform 601. The adjustment platform 601 is provided with at least one first mounting groove 604, in which the emission component to be adjusted is installed. The second mounting port 5031 is positioned in correspondence with the first mounting groove 604, so that the laser emitter 505 and the emission component to be adjusted can be assembled one-to-one.

[0038] The fine-tuning mechanism includes a rectangular mounting platform 602, which is fixed to the bottom of the adjustment platform 601 to support it. The rectangular mounting platform 602 consists of a top plate, a bottom plate, and four corner posts supporting both. A three-axis servo module is mounted on the bottom plate of the rectangular mounting platform 602. The three-axis servo module includes an X1-axis servo module 6022, a Y1-axis servo module 6021, and a Z1-axis servo module (not shown in the figure). The X1-axis servo module 6022 drives the adjustment platform 601 to move along the X-axis, the Y1-axis servo module 6021 drives the adjustment platform 601 to move along the Y-axis, and the Z1-axis servo module drives the adjustment platform 601 to move along the Z-axis. The back housing of the adjustment and emission assembly has an insertion hole. During operation, the telescopic cylinder 504 drives the laser emitter 505 to a horizontal position, allowing the head of the laser emitter 505 to be inserted into the insertion hole of the adjustment and emission assembly, forming the product to be adjusted and emitted. By setting multiple workstations on the operating fixture, combined with the precise transfer of the first drive module, the equipment can operate continuously in a "calibration-curing" cycle without manual intervention or waiting.

[0039] like Figure 1-2As shown, the optical observation system includes a magnifying lens 12, a calibration plate 14, and an observation camera 13. The magnifying lens 12 and the calibration plate 14 are fixedly mounted on the base 1 of the operating fixture via a bracket 8. The bracket 8 includes a first support column 801 and a second support column 802 fixed on the base 1 of the operating fixture, and a bracket crossbar 803 fixed to the top of the first support column 801 and the second support column. Two first connecting rods 901 are installed in the middle of the back of the bracket crossbar 803, and the two first connecting rods 901 extend towards the base 1. The two first connecting rods 901 are connected to form a mounting groove 9011, which is used to accommodate the magnifying lens 12. The optical axis of the magnifying lens 12 coincides with the light output path of the product to be calibrated.

[0040] like Figure 6 As shown, the observation camera 13 is fixedly installed in the middle of the first support column 801. A connecting plate 804 is fixedly installed in the middle of the support column. The connecting plate 804 includes a fixing part 8041 fixedly installed in the middle of the support column, and a connecting part 8042 extending from one end of the fixing part 8041 toward the calibration plate 14. The observation camera 13 is fixedly installed on the plate surface of the connecting part 8042, so that the lens of the observation camera 13 faces the plate surface of the calibration plate 14, and is used to collect the light spot image projected onto the calibration plate 14 by the magnifying lens 12. The setting of the magnifying lens 12 greatly shortens the physical space required for the propagation of the light path, making the entire device compact, small in size, and with high space utilization efficiency.

[0041] like Figure 1 and Figure 7 As shown, the calibration plate 14 is fixed on the base 1 of the operating fixture and located directly behind the intensifier 12. The surface of the calibration plate 14 is perpendicular to the light emission direction of the product to be calibrated. The emitted light path is shortened by using the intensifier 12 and then projected onto the small-sized calibration plate 14. The calibration plate 14 has a preset target, including a preset center point and the area between two parallel calibration lines. In this embodiment, it is the preset center point. The control system aligns the light with the preset center point to achieve precise calibration of the optical axis of the emitted product. At the same time, this optical observation system replaces visual observation, improving the calibration accuracy.

[0042] like Figure 1 and Figure 8As shown, it also includes a dispensing and curing mechanism, including a drive mechanism that is slidably connected to the support crossbar 803. The dispensing and curing assembly is slidably connected to the drive mechanism, and the dispensing and curing assembly is driven to the joint of the product to be calibrated directly above it for dispensing and curing. The drive mechanism includes a Y2-axis servo module 9 and a Z-axis servo module 7. The Y2-axis servo module 9 is mounted on the front of the support crossbar 803, and a first connecting plate 701 is slidably connected to the Y2-axis servo module 9. The Z-axis servo module 7 is mounted on the first connecting plate 701. The dispensing and curing assembly includes a second connecting plate 702. One side of the second connecting plate 702 is slidably connected to the Z-axis servo module 7, and the other side is fixedly mounted with a dispensing device sleeve and two irradiator sleeves for mounting the dispensing device 10 in the dispensing device sleeve and the UV irradiator 11 in the irradiator sleeve. The Y2-axis servo module 9 drives the Z-axis servo module 7 to move the dispensing and curing assembly on it along the Y-axis direction. The Z-axis servo module 7 drives the second connecting plate 702 to slide, causing the dispensing and curing assembly to move up and down along the Z-axis direction, thereby moving the dispensing device 10 and the UV irradiator 11 to directly above the joint of the product to be calibrated for dispensing and curing.

[0043] It also includes a control system (not shown in the figure), which is electrically connected to the first drive module, the optical observation system, and the dispensing and curing mechanism to control the movement and calibration of the product to be calibrated, as well as the dispensing and curing actions. This device realizes the automated operation of the product to be calibrated throughout the entire process of assembly, transfer, optical path calibration, dispensing, and curing.

[0044] In this embodiment, the independent installation of the dispensing and curing mechanism and the modular design of the operating fixture make the replacement, debugging and maintenance of key components very convenient, effectively reducing equipment downtime. The automatic alignment of the equipment assembly module improves the accuracy and efficiency of equipment assembly. At the same time, the addition of a magnifying glass 12 saves equipment space.

[0045] An automatic assembly method for a ranging module, specifically an automatic optical path adjustment and emission assembly method, comprises the following steps: Step 1: The operator installs at least one laser emitter 505 into the second mounting port 5031 of the connector 503, places at least one emission component to be adjusted into the first mounting slot 604 of the adjustment platform 601, and drives the operating fixture to move to the front of the magnifying lens 12 through the first drive module (X-axis servo module 2 and Y-axis servo module 4). Step 2: The telescopic cylinder drives the kth laser emitter 505 and the kth emission component to be adjusted to initially dock, forming the first emission product to be adjusted (k initially value is 1); at this time, the (k+1)th to Nth laser emitters 505 and their corresponding emission components to be adjusted remain in an unassembled state; the drive mechanism (Z-axis servo module 7 and Y2-axis servo module 9) drives the dispensing and curing component to move directly above the emission product to be adjusted, and the dispensing device 10 dispenses adhesive at the joint of the emission product to be adjusted; Step 3: Start the laser emitter 505 in the product to be adjusted. The laser is projected onto the calibration plate 14 through the magnifying lens 12 to form a light spot. The observation camera 13 collects the image of the light spot and transmits it to the control system. Step 4: Based on the deviation between the light spot image and the center point on the calibration board 14, the control system drives the X1-axis, Y1-axis servo modules (6022, 6021) and Z1-axis servo modules through a closed-loop control algorithm to finely adjust the spatial position of the emission component to be adjusted on the adjustment stage 601 until the light spot coincides with the center point of the calibration board 14, achieving precise alignment of the optical axis; thus forming a calibrated emission product. Step 5: The UV irradiator 11 irradiates and cures the adhesive at the joint of the calibrated modulated emission product, thereby completing the fixation of the first modulated emission product; Step 6: After assembling the first tuning and emission product, determine if k is less than N. If so, set k = k + 1. Repeat steps 2-5 above until all tuning and emission products are assembled and manually unloaded.

[0046] In step 1, when the k-th product to be calibrated is unassembled, the piston rod 5042 of the telescopic cylinder 504 retracts, driving the connector 503 to the open state. The connecting rod 5043 provides support and fixation when the connector 503 is open. During assembly, the piston rod 5042 of the telescopic cylinder 504 extends, driving the connector 503 to rotate, causing the first optical component mounted on the connector 503 to be inserted into the first optical component. While the connector 503 rotates, the connecting rod 5043 rotates around the hinge point with the side wall of the connector 503 and the hinge points with the two side walls of the top of the T-shaped connector 5041, ultimately maintaining a horizontal state together with the connector 503. The T-shaped connector 5041 is used to support and limit the connector 503 to the horizontal state. At this time, the (k+1)-th to N-th products to be calibrated are in an unassembled state.

[0047] In step 4, the target of the calibration target is the center point M of the calibration plate 14; the function of the control system is to adjust the light spot to coincide with the preset center point in order to achieve precise alignment of the optical axis.

[0048] The dispensing adhesive used in this embodiment is a low-viscosity adhesive commonly used in the industrial field. The low-viscosity adhesive plays a "micro-lubricating" role in the fine-tuning process, allowing the adjustment drive module to overcome static friction and achieve smoother and more precise micron-level displacement.

[0049] This process combines assembly line-style calibration with a multi-station design, enabling the orderly completion of multiple product processes within a limited equipment footprint. This ensures that each product leaving the factory has stable optical performance, improves product yield, replaces manual calibration, greatly enhances production efficiency and calibration accuracy, and saves time.

[0050] Example 2 Based on the automatic assembly device and method for a ranging module in Embodiment 1, after assembling the emission adjustment product in Embodiment 1, the focusing action can be performed. The focusing calibration device used in this embodiment is basically the same as in Embodiment 1, except that the fixed platform 5 of the operating fixture in this embodiment no longer houses the laser emitter 505, but instead mounts a Sensor PCB board on the connector 503. The Sensor PCB board serves as the first optical component, providing a fixed imaging reference plane. The first mounting slot 604 on the adjustment platform 601 holds the emission adjustment product completed in Embodiment 1. The calibrated emission adjustment product serves as the second optical component, and the focal plane is calibrated by adjustment. The predetermined target of the calibration plate 14 in this embodiment is the area between two parallel calibration lines. The control system adjusts the light spot to fall into the area between the two parallel calibration lines to achieve precise adjustment of the focal plane. The specific steps are as follows: Step 1: After assembling the N adjustment and emission products on the operating fixture, the first drive module (X-axis servo module 2 and Y-axis servo module 4) separates the adjustment fixture 6 from the fixed fixture 5; the operator installs at least one sensor PCB board on the connector 503 of the fixed fixture 5, presses the start button, and the first drive module moves the operating fixture to the front of the magnifying lens 12; Step 2: The telescopic cylinder 504 drives the k-th sensor PCB board to move and initially dock with the k-th focusing product to form the k-th focusing product (k initially value is 1); at this time, the k+1 to N-th sensor PCB boards and their corresponding focusing products remain in an unassembled state; the drive mechanism (Z-axis servo module 7 and Y2-axis servo module 9) drives the dispensing and curing assembly to move directly above the focusing product, and the dispensing device 10 dispenses adhesive to the joint of the focusing product; Step 3: Activate the product to be focused to emit a laser. The laser beam is projected onto the calibration plate 14 via the magnifying lens 12 to form a light spot; the observation camera 13 acquires the image of the light spot and transmits it to the control system. In this embodiment, the focusing calibration target is the area between two parallel calibration lines on the calibration plate 14; Step 4: Based on the deviation between the light spot image and the area, the control system drives the fine-tuning mechanism (X1 axis, Y1 axis, Z1 axis servo module) to finely adjust the spatial position of the focusing product on the adjustment stage 601 until the light spot is adjusted to fall into the area between the two calibration lines, thereby achieving precise adjustment of the focal plane and forming a calibrated focusing product. Step 5: The UV irradiator 11 irradiates and cures the adhesive at the joint of the calibrated focusing product, thus completing the curing of the first focusing product.

[0051] Step 6: After assembling the first focusing product, determine if k is less than N. If so, set k = k + 1. Repeat steps 2-5 above until all focusing products are assembled and manually unloaded.

[0052] The above provides a detailed description of the automatic assembly device and assembly method for a ranging module provided by the present invention. Specific examples have been used to illustrate the structure and working principle of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A distance measuring module automatic assembly device, characterized in that, The automatic calibration system, the optical observation system and the point glue curing mechanism are included. The automatic calibration system includes a first driving module, an operation jig is slidably connected to the first driving module, and the operation jig is driven by the first driving module to move along the X-axis direction and the Y-axis direction; the operation jig includes a fixed jig (5) and an adjusting jig (6) arranged opposite to the fixed jig (5), at least one first optical assembly is installed on the fixed jig (5), and at least one second optical assembly is installed on the adjusting jig (6); the adjusting jig (6) includes a fine adjustment mechanism for driving the second optical assembly to perform fine adjustment in the X-axis direction, the Y-axis direction and the Z-axis direction, and the first optical assembly is inserted into the second optical assembly to preliminarily assemble a product to be calibrated. The optical observation system includes a magnifying lens (12), an observation camera (13) and a calibration plate (14); light of the product to be calibrated is projected onto the calibration plate (14) through the magnifying lens (12), and a light spot image on the calibration plate (14) is collected by the observation camera (13). The point glue curing mechanism includes a driving mechanism and a point glue curing assembly; the driving mechanism drives the point glue curing assembly to move to the top of a joint of the product to be calibrated for point glue curing. A control system is further included and is electrically connected with the automatic calibration system, the optical observation system and the point glue curing mechanism.

2. The automatic distance measuring module assembly device according to claim 1, wherein, The fixed jig (5) includes a mounting plate (501) and a mounting table (502) fixed to one end of the mounting plate (501); the mounting table (502) is composed of two side plates and a horizontal plate; at least one first mounting port (5021) is formed in one end of the horizontal plate, a telescopic cylinder (504) is installed in the first mounting port (5021), a piston rod (5042) of the telescopic cylinder (504) is hinged to one end of a connecting piece (503), and a second mounting port (5031) is formed in an end face of the other end of the connecting piece (503); a first optical assembly is installed in the second mounting port (5031); a T-shaped connecting piece (5041) is further fixed to the top end of the telescopic cylinder (504), and the top end of the T-shaped connecting piece (5041) is hinged to the side walls of the connecting piece (503) through two connecting rods (5043).

3. The automatic distance measuring module assembly device according to claim 2, wherein, The adjusting jig (6) is fixed to the other end of the mounting plate (501); the adjusting jig (6) includes an adjusting carrier (601) and a fine adjustment mechanism for supporting the adjusting carrier (601); at least one first mounting groove (604) is arranged on the adjusting carrier (601), and the second optical assembly is installed in the first mounting groove (604); the fine adjustment mechanism includes a three-axis servo module, and the three-axis servo module is used for driving the second optical assembly to perform fine adjustment in the X-axis direction, the Y-axis direction and the Z-axis direction.

4. The automatic distance measuring module assembly device according to claim 3, wherein, The positions of the second mounting port (5031) and the first mounting groove (604) correspond to each other, so that the first optical assembly and the second optical assembly can be assembled one by one.

5. The automatic distance measuring module assembly device according to claim 1, wherein, The first optical assembly comprises a laser emitter (505), and the second optical assembly comprises an optical assembly assembled with the laser emitter (505).

6. A method for automatically assembling a ranging module using the automatic ranging module assembling apparatus according to any one of claims 1 to 5, characterized by, The method comprises the following steps: S1: moving the first optical assembly and the second optical assembly to the front of the magnification lens 12 by driving the first driving module; S2: preliminarily assembling the first optical assembly and the second optical assembly to form a kth product to be calibrated, and dispensing glue on the joint of the product to be calibrated; the (k+1)th to Nth first optical assembly and the second optical assembly are in an unassembled state; S3: starting the product to be calibrated to emit laser, forming a light spot on the calibration plate (14) through the magnification lens (12), and collecting a light spot image by the observation camera (13); S4: based on the deviation of the light spot image from a preset target, adjusting the position of the second optical assembly through the fine adjustment mechanism until the light spot meets the calibration target to form a calibrated product; S5: irradiating and curing the glue on the joint of the calibrated product to complete the curing of the current kth calibration product; S6: if k is less than N, then k=k+1, and steps S2 to S5 are repeatedly executed; Otherwise, the assembly process is completed and the product is discharged.

7. The method of claim 6, wherein, In S1, when the kth product to be calibrated is in an unassembled state, the piston rod (5042) of the telescopic air cylinder (504) is retracted to drive the connecting piece (503) to the open state; when assembled, the piston rod (5042) of the telescopic air cylinder (504) is extended to drive the connecting piece (503) to perform a flipping motion, thereby inserting the first optical assembly installed on the connecting piece (503) into the first optical assembly; the T-shaped connecting piece (5041) is used to limit the connecting piece (503) to a horizontal state; the (k+1)th to Nth product to be calibrated is in an unassembled state.

8. The method of claim 6, wherein, In S5, after completing the curing of the current Nth calibration product, the first driving module drives the adjustment jig (6) and the fixing jig (5) to separate, installs a PCB board in the second mounting port (5031) of the connecting piece (503), moves the operation jig to the front of the magnification lens (12) by driving the first driving module, and repeats the S2-S5 process to complete the focusing action of N calibration products.

9. The method of claim 6, wherein, In S4, the calibration target of the emitted light spot is the center point of the calibration plate (14); the control system adjusts the light spot to coincide with the preset center point to realize accurate alignment of the optical axis.

10. The method of claim 8, wherein, In S4, the calibration target of the focusing is the area between two parallel calibration lines on the calibration plate (14); in S4, the control system adjusts the light spot to fall into the area between the two parallel calibration lines to realize accurate adjustment of the focal plane.

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