Nozzle calibration device

Abstract

The utility model relates to the technical field of printing equipment, in particular to a nozzle calibration device. Comprising a leveling mechanism and a visual positioning mechanism, and the leveling mechanism adjusts the Z-axis height of a nozzle through a leveling probe, a photoelectric switch and a driving assembly; the visual positioning mechanism determines the center position of the spray head through a calibration camera and a calculation unit and carries out X-axis and Y-axis position compensation. In addition, a cleaning mechanism is further arranged and comprises a horizontal moving assembly, a rotary moving assembly and a material wiping microwell plate, and the cleaning mechanism is used for removing waste of the spray head and ensuring the printing quality. The effects that the nozzle position is accurately calibrated, the printing precision and stability are improved, and meanwhile the maintenance cost is reduced are achieved.

Description

Technical Field

[0001] This application relates to the field of printing equipment technology, and more particularly to a nozzle calibration device. Background Technology

[0002] Since its inception, 3D printing technology has developed rapidly and has been widely applied in various fields such as manufacturing, medicine, and aerospace. Especially in manufacturing complex structural parts, 3D printing technology has demonstrated enormous potential and advantages. However, with the continuous expansion of application scenarios, the performance of 3D printing equipment in high-temperature environments has gradually become a problem that urgently needs to be solved. At high temperatures, the difference in the coefficients of thermal expansion of different materials can cause changes in the relative positions between nozzles, thus affecting printing accuracy, especially in dual-nozzle or multi-nozzle configurations.

[0003] To address this challenge, existing technical solutions mainly include the following methods: first, adding temperature sensors to monitor ambient temperature in real time and using software algorithms to dynamically adjust the nozzle position; second, using mechanical structures for manual calibration, such as using precision measuring tools to accurately adjust the nozzle spacing; and third, reducing the impact of the external environment on the nozzles through physical isolation measures, such as wrapping the nozzle area with heat-insulating materials. These methods each have their own characteristics, but they still have certain limitations in practical applications.

[0004] While the methods described above can improve the accuracy of 3D printing in high-temperature environments to some extent, they still cannot fully meet the demands of high-precision printing. Especially for complex multi-nozzle systems, traditional calibration methods are often cumbersome and fail to achieve the desired accuracy. Therefore, how to efficiently and accurately calibrate nozzles in high-temperature environments remains a pressing technical challenge. Utility Model Content

[0005] The purpose of this application is to provide a nozzle calibration device.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a nozzle calibration device, comprising:

[0007] The leveling mechanism includes a leveling probe, a photoelectric switch cooperating with the leveling probe, and a driving component for driving the printheads to press against the leveling probe. The driving component drives several printheads to sequentially press against the leveling probe, causing the leveling probe to extend and retract, triggering the photoelectric switch to obtain signal feedback. Based on the feedback from the photoelectric switch, the height of the printheads in the Z-axis direction is adjusted to determine the printhead height setting. The visual positioning mechanism includes a calibration camera and a calculation unit. The calibration camera takes pictures of the printheads, and the calculation unit calculates the center position of the printheads and performs position compensation of the printheads in the X and Y axes when the printheads are printing.

[0008] By adopting the above technical solutions, the leveling mechanism, through the cooperation of the drive component, leveling probe, and photoelectric switch, can precisely adjust the Z-axis height of the printhead, effectively solving the problem of inconsistent printhead height caused by factors such as thermal expansion, and ensuring accurate positioning of the printhead in the Z-axis direction. The visual positioning mechanism, using a calibration camera and computing unit, employs advanced algorithms to calculate the center position of the printhead. During printing, it can perform position compensation of the printhead in the X and Y axes, greatly improving the printhead's positioning accuracy in the plane, thereby significantly improving printing accuracy and reducing printing defects caused by printhead position deviations. It is suitable for 3D printing tasks with high precision requirements and can also achieve efficient and accurate calibration even with multiple printhead configurations, improving the performance and stability of the entire printing equipment.

[0009] Optionally, the visual positioning mechanism further includes a first mounting bracket, on which a housing is provided, and a receiving groove is formed in the recess of the housing. The calibration camera is disposed in the receiving groove, and a light-transmitting plate is provided at the opening of the receiving groove.

[0010] By adopting the above technical solution, the first mounting bracket ensures the overall stability of the visual positioning mechanism, enabling the calibration camera to maintain a stable position during equipment operation, thereby guaranteeing the accuracy of the captured images. The housing and its recessed receiving groove effectively protect the calibration camera from external interference factors such as dust and impacts, extending its service life. The light-transmitting plate allows light to pass through smoothly so that the calibration camera can clearly capture images of the nozzle, while also preventing foreign objects from entering the receiving groove and affecting the camera's operation. This ensures that the visual positioning system can continuously and accurately acquire nozzle image information, providing a reliable data foundation for the computing unit to accurately calculate the nozzle's center position. Ultimately, this helps improve the accuracy of nozzle position compensation in the X and Y axes, enhancing the overall quality and stability of 3D printing.

[0011] Optionally, the receiving slot is equipped with supplementary LEDs.

[0012] By adopting the above technical solution, the supplementary LED provides additional illumination during printhead imaging, ensuring that the calibration camera can acquire clear and accurate printhead images under various lighting conditions. Especially in low light conditions or when the printhead structure is complex and shadows are present, the supplementary LED effectively eliminates shadows, enhances image contrast, and makes the printhead's detailed features more prominent. This helps the computing unit more accurately identify the printhead's contours and features, thereby more precisely calculating the printhead's center position, improving the accuracy of printhead position compensation in the X and Y axes, further enhancing the overall precision and quality of 3D printing, ensuring the stability and reliability of the printing process, and reducing position calculation errors and printing defects caused by lighting issues.

[0013] Optionally, a cleaning mechanism is also included, comprising a horizontal moving component and a rotary moving component. The horizontal moving component includes a second mounting bracket, on which a motor is mounted. The motor is driven by a synchronous belt, which is driven by a lead screw. A movable block is mounted on the lead screw, and the movable block is connected to the first mounting bracket. The motor drives the synchronous belt to move, the synchronous belt drives the lead screw to rotate, and the movable block slides relative to the lead screw, thereby realizing the horizontal linear movement of the visual positioning mechanism.

[0014] By adopting the above technical solution, the horizontal movement component, through the cooperation of a motor, synchronous belt, and lead screw, can precisely control the horizontal linear movement of the vision positioning mechanism, ensuring accurate switching between different working positions. This allows for precise alignment of the nozzle with the cleaning component or other related parts, improving the accuracy of cleaning and calibration operations. This precise motion control enhances cleaning efficiency, ensuring the nozzle can fully rub against the microporous plate to effectively remove waste material, and accurately aligning with the Teflon tube during operations such as glue application. The second mounting bracket provides stable support for components such as the motor, ensuring stable operation of the entire transmission system and reducing vibration and deviation. The overall structural design enables the cleaning mechanism and vision positioning mechanism to work together, optimizing the cleaning process and enhancing the functionality and automation of the entire nozzle calibration device. This helps improve the working efficiency of 3D printing equipment, extend nozzle life, reduce maintenance costs, improve overall equipment performance and reliability, and ensure continuous and stable printing operations.

[0015] Optionally, the cleaning mechanism further includes a wiping micro-perforated plate disposed on the housing, wherein the nozzle rubs against the wiping micro-perforated plate to remove nozzle waste.

[0016] By employing the above technical solution, the friction between the nozzle and the micro-holes on the wiping plate effectively removes waste material accumulated during the nozzle's operation. The special design of the wiping micro-holes adapts to the shape and size of the nozzle, ensuring thorough cleaning of the nozzle surface during friction, including hard-to-reach corners and crevices. This significantly improves cleaning efficiency and prevents waste residue from negatively impacting subsequent printing quality. This helps maintain the nozzle's normal operating condition, ensuring uniform and smooth glue dispensing, thereby improving printing accuracy and product quality. Simultaneously, this design reduces equipment malfunctions caused by nozzle clogging or waste accumulation, extends nozzle lifespan, reduces equipment maintenance costs, improves the overall operational stability and reliability of the 3D printing equipment, and ensures continuous and efficient printing operations.

[0017] Optionally, the rotating moving assembly includes a blocking member disposed on the second mounting bracket, and the rotating moving assembly also includes a discharge rotating plate, which is rotatably disposed on the first mounting bracket. The housing is hollow and has a discharge channel. One end of the discharge rotating plate is sealed to a channel hole on one side of the discharge channel to receive the glue from the nozzle. The end of the discharge rotating plate away from the discharge channel is used to abut against the blocking member, so that the discharge rotating plate rotates to avoid the discharge channel.

[0018] By adopting the above technical solution, the blocking component on the second mounting frame and the rotating discharge plate on the first mounting frame work together to effectively control the waste collection and processing process. During the nozzle discharge cleaning stage, one end of the rotating discharge plate blocks one side of the discharge channel hole, reliably receiving the waste discharge from the nozzle and preventing overflow that could cause pollution or equipment damage. When waste needs to be processed, with the movement of related components, the end of the rotating discharge plate away from the discharge channel abuts against the blocking component, causing the rotating discharge plate to rotate and avoid the discharge channel, allowing the collected waste to fall smoothly into the designated location for centralized processing. This design not only ensures the efficient and orderly waste cleaning process but also avoids secondary pollution or impact on subsequent work caused by waste residue, improving the cleanliness and operational stability of the equipment, helping to extend its service life. It also reduces manual intervention, enhances the automation and efficiency of the entire 3D printing equipment in the waste processing stage, and further optimizes the overall performance of the equipment.

[0019] Optionally, the end of the discharge rotary plate away from the discharge channel is provided with a first mounting post, the first mounting frame is provided with a second mounting post, and a tension spring is provided between the first mounting post and the second mounting post.

[0020] By adopting the above technical solution, the tension spring provides a restoring force for the discharge rotary plate. After the discharge rotary plate rotates to avoid the discharge channel and completes the waste discharge, the tension spring can promptly pull the discharge rotary plate back to its initial position, allowing it to seal the discharge channel again and prepare for the next nozzle dispensing. This ensures the continuity and stability of the waste handling process, avoiding waste leakage or poor collection due to abnormal position of the discharge rotary plate. Simultaneously, the tension spring helps buffer the impact force on the discharge rotary plate during rotation, reducing component wear and extending the service life of the discharge rotary plate and related connecting parts. This improves the reliability and durability of the entire cleaning mechanism and 3D printing equipment, ensuring long-term stable operation, reducing maintenance costs, and improving overall equipment efficiency.

[0021] Optionally, the discharge channel is equipped with a Teflon tube.

[0022] By adopting the above technical solutions, Teflon possesses an extremely low coefficient of friction, allowing the adhesive to flow smoothly within the Teflon tube during nozzle ejection. This effectively prevents adhesive residue and blockage on the tube walls, ensuring the efficiency and stability of the waste discharge process. Its excellent chemical stability allows the Teflon tube to withstand the corrosive effects of various chemicals, making it suitable for different types of printing materials and avoiding pipe damage or adhesive contamination caused by chemical reactions. Furthermore, the excellent high-temperature resistance of the Teflon tube allows it to adapt to the high-temperature environment of 3D printing, without deforming or losing performance due to temperature changes, ensuring the structural integrity and functional reliability of the ejection channel during long-term use. This helps maintain the normal operation of the entire cleaning mechanism, reduces equipment failures caused by ejection channel problems, improves overall equipment efficiency, extends equipment lifespan, and ensures stable print quality, reducing printing defects caused by pipe issues.

[0023] Optionally, a receiving box is also included for collecting waste materials.

[0024] By adopting the above technical solution, the receiving box, as a component specifically designed to collect waste, provides a centralized collection space for waste, effectively preventing waste from scattering inside the equipment or in the surrounding environment, maintaining the cleanliness of the work area, and reducing cleaning workload. Through coordinated work with components such as the rotating moving parts in the cleaning mechanism, when the discharge rotary plate rotates to avoid the discharge channel, waste can accurately fall into the receiving box, achieving orderly collection and management of waste. This not only helps prevent waste from contaminating or damaging other components of the equipment and extending the overall service life of the equipment, but also facilitates regular and unified waste disposal, improving the convenience and efficiency of equipment maintenance. Furthermore, the presence of the receiving box ensures the closed and continuous nature of the entire waste handling process, further enhancing the operational stability and reliability of the 3D printing equipment and providing strong support for high-quality printing operations.

[0025] In summary, this application has at least the following beneficial effect:

[0026] 1. The dual-nozzle nozzles achieve fully automatic leveling through a leveling mechanism, which improves the accuracy and stability of 3D printing in high-temperature environments;

[0027] 2. By taking pictures of the nozzle through a visual positioning mechanism and using AI visual algorithms to calculate the center position of the nozzle, precise position compensation of the nozzle in the X and Y axes is achieved during the 3D printing process, further improving printing accuracy;

[0028] 3. The cleaning mechanism can automatically remove and collect nozzle waste, ensuring nozzle cleanliness and extending equipment life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a nozzle calibration device.

[0030] Figure 2 This is a schematic diagram of the driver component;

[0031] Figure 3 This is a schematic diagram of the visual positioning mechanism;

[0032] Figure 4 This is a structural diagram of the cleaning system.

[0033] Figure Labels

[0034] 1. Leveling mechanism; 101. Leveling probe; 102. Photoelectric switch; 103. Drive assembly; 2. Vision positioning mechanism; 201. Calibration camera; 202. First mounting bracket; 203. Housing; 204. Light-transmitting plate; 205. Supplemental LED; 3. Nozzle; 4. Receiving tank; 5. Cleaning mechanism; 51. Horizontal movement assembly; 511. Second mounting bracket; 512. Motor; 513. Synchronous belt; 514. Lead screw; 515. Moving block; 52. Rotary movement assembly; 521. Blocking component; 522. Discharge rotary plate; 523. First mounting column; 524. Second mounting column; 525. Tension spring; 53. Wiping microporous plate; 6. Discharge channel; 7. Teflon tube; 8. Receiving box. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] In this embodiment, refer to Figure 1-4A nozzle calibration device includes a leveling mechanism 1 and a vision positioning mechanism 2. The leveling mechanism 1 includes a leveling probe 101, a photoelectric switch 102 cooperating with the leveling probe 101, and a drive assembly 103 for driving a printhead 3 to press against the leveling probe 101. The drive assembly 103 drives the printhead 3 to sequentially press against the leveling probe 101, causing the leveling probe 101 to extend or retract relative to the photoelectric switch 102. This triggers the photoelectric switch 102 to receive signal feedback, and the height of the printhead 3 in the Z-axis direction is adjusted based on the feedback from the photoelectric switch 102 to determine the nozzle height setting. The vision positioning mechanism 2 includes a calibration camera 201 and a calculation unit. The calibration camera 201 takes pictures of the printhead 3, and the calculation unit calculates the center position of the printhead 3, performing position compensation in the X and Y axes of the printhead 3 during printing. This design effectively solves the printing accuracy problem caused by the relative position changes between the printheads 3 under high-temperature environments, improving the quality and efficiency of 3D printing.

[0038] Specifically, refer to Figure 2 The leveling mechanism 1 includes a leveling probe 101, a photoelectric switch 102, and a drive assembly 103. The material selection for the leveling probe 101 depends on the temperature and chemical properties of the working environment. The photoelectric switch 102 can be an infrared photoelectric switch 102 or a laser photoelectric switch 102, both of which have high sensitivity and response speed. The drive assembly 103 can be a cylinder, an electric push rod, or a lead screw mechanism; the appropriate drive method is selected according to actual needs.

[0039] Reference Figure 3 The visual positioning mechanism 2 includes a calibration camera 201 and a computing unit. The calibration camera 201 can be an industrial camera or a regular camera; industrial cameras offer higher resolution and stability, suitable for high-precision requirements. The computing unit can be an embedded computer or a microcontroller, responsible for processing image data and calculating the center position of the nozzle 3. Furthermore, a housing 203 can be mounted on the first mounting bracket 202. The housing 203 has a recessed receiving groove 4, within which the calibration camera 201 is positioned. A light-transmitting plate 204 is provided at the opening of the receiving groove 4 to protect the camera from external interference. A supplementary LED 205 is installed within the receiving groove 4. When photographing the nozzle 3, the supplementary LED provides additional illumination, ensuring that the calibration camera 201 can acquire clear and accurate images of the nozzle 3 under various lighting conditions. Especially in low light conditions or when the nozzle 3 has a complex structure and shadows, the supplementary LED can effectively eliminate shadows, enhance image contrast, and make the details of the nozzle 3 more apparent.

[0040] Reference Figure 3 and Figure 4The cleaning mechanism 5 includes a horizontal moving component 51 and a rotary moving component 52. The horizontal moving component 51 includes a second mounting bracket 511, on which a motor 512 is mounted. The motor 512 is driven by a synchronous belt 513, which is driven by a lead screw 514. Both ends of the lead screw 514 are rotatably mounted on the second mounting bracket 511. A movable block 515 is mounted on the lead screw 514 and connected to a first mounting bracket 202. The motor 512 drives the synchronous belt 513 to move, which in turn drives the lead screw 514 to rotate. The movable block 515 slides relative to the lead screw 514, thus achieving horizontal linear movement of the visual positioning mechanism 2.

[0041] The rotating moving assembly 52 includes a blocking member 521 mounted on the second mounting bracket 511. The rotating moving assembly 52 also includes a discharge rotating plate 522, which is rotatably mounted on the first mounting bracket 202. The housing 203 is hollow and forms a discharge channel 6. One end of the discharge rotating plate 522 is sealed against a side hole of the discharge channel 6 to receive the adhesive discharged from the nozzle 3. The end of the discharge rotating plate 522 away from the discharge channel 6 abuts against the blocking member 521, causing the discharge rotating plate 522 to rotate and avoid the discharge channel 6. This allows for automatic discharge of waste material after the nozzle 3 has finished cleaning, preventing blockages.

[0042] A mounting post is provided at the end of the discharge rotary plate 522 away from the discharge channel 6, and a mounting post is also provided on the first mounting bracket 202. A tension spring 525 is provided between the two. A Teflon tube 7 is provided inside the discharge channel 6. The Teflon tube 7 has excellent wear resistance and anti-adhesion properties to ensure smooth discharge of waste. The receiving box 8 is used to receive waste for easy cleaning later.

[0043] The implementation principle of this embodiment is as follows: Through the coordinated action of the leveling mechanism 1 and the visual positioning mechanism 2, fully automatic leveling and glue dispensing position calibration of the dual nozzles 3 are achieved. The leveling mechanism 1, using the cooperation of the leveling probe 101 and the photoelectric switch 102, precisely adjusts the Z-axis height of the nozzles 3, ensuring that the nozzles 3 are on the same plane. The visual positioning mechanism 2, through the collaboration of the calibration camera 201 and the computing unit, monitors the center position of the nozzles 3 in real time and performs X-axis and Y-axis directional compensation during the printing process, greatly improving printing accuracy. Simultaneously, the design of the cleaning mechanism 5 effectively solves the problem of nozzle contamination, ensuring the continuity and stability of the printing process. This comprehensive solution not only improves the performance of the 3D printing equipment but also provides strong support for high-quality printing in high-temperature environments.

[0044] Example 2

[0045] The difference between this embodiment and the above embodiments is that heat insulation measures have been added to better adapt to high-temperature environments.

[0046] Specifically, both the leveling probe 101 and the photoelectric switch 102 in the leveling mechanism 1 are heat-insulated. The leveling probe 101 is wrapped with a layer of ceramic fiber material, which has excellent heat insulation performance. Heat sinks are arranged around the photoelectric switch 102, which helps dissipate heat and also provides some heat insulation. The drive assembly 103 uses high-temperature resistant materials, such as nickel-chromium alloy, to ensure normal operation in high-temperature environments.

[0047] The visual positioning mechanism 2 is also heat-insulated. The housing of the calibration camera 201 has been enhanced with multiple layers of heat-insulating film to reduce heat conduction. A fan and heat sink have been added inside the housing 203 containing the computing unit to ensure that the operating temperature of the electronic components remains within a safe range. Furthermore, the housing 203 is made of glass fiber reinforced plastic with low thermal conductivity, further enhancing the heat insulation effect.

[0048] The motor 512 and synchronous belt 513 of the cleaning mechanism 5 also employ similar heat insulation measures. The housing of motor 512 is covered with a layer of graphene composite material, significantly reducing heat transfer. The synchronous belt 513 is made of high-temperature resistant silicone rubber material, ensuring normal operation even at high temperatures. The discharge rotary plate 522 and the receiving box 8 are also heat-insulated to prevent damage from high temperatures.

[0049] The implementation principle of this embodiment is as follows: by adding heat insulation measures, this embodiment can more effectively adapt to high-temperature environments. Key components of the leveling mechanism 1 and the visual positioning mechanism 2 are effectively protected by heat insulation, ensuring stability and reliability under high-temperature conditions. Improvements to the cleaning mechanism 5 further enhance the overall system's durability and ease of maintenance. This comprehensive heat insulation design not only extends the equipment's service life but also maintains high-performance printing operations in extreme environments, meeting the stringent requirements of the high-end market.

[0050] Example 3

[0051] The difference between this embodiment and the above embodiments is that intelligent identification and fault detection functions have been added, which improves the intelligence level of the system.

[0052] Specifically, the photoelectric switch 102 in the leveling mechanism 1 integrates an intelligent recognition module, which can automatically determine whether the probe has contacted the nozzle 3 and send the information to the central controller via a wireless communication module. The central controller automatically adjusts the height of the nozzle 3 based on the received data, without manual intervention. The drive assembly 103 is also equipped with a torque sensor to monitor changes in drive force in real time; if an abnormality is detected, it immediately stops operation and triggers an alarm.

[0053] The calibration camera 201 in the visual positioning mechanism 2 incorporates an AI algorithm, which can not only identify the position of the nozzle 3 but also detect its condition, such as whether it is blocked or otherwise damaged. The computing unit, trained using a deep learning model, can accurately identify common faults and generate maintenance suggestions. Furthermore, the visual positioning mechanism 2 is equipped with humidity and temperature sensors to monitor the working environment in real time, ensuring the equipment operates under optimal conditions.

[0054] The motor 512 and synchronous belt 513 of the cleaning mechanism 5 have also been enhanced with status monitoring functions. The motor 512 integrates a current sensor and a vibration sensor, enabling real-time monitoring of its operating status and early warning of potential faults. A wear sensor is installed on the synchronous belt 513 to periodically check its wear and replace damaged parts promptly. The discharge rotary plate 522 and the receiving box 8 are also equipped with weight sensors, which automatically remind workers to clean up when waste accumulates to a certain amount.

[0055] The implementation principle of this embodiment is as follows: By adding intelligent recognition and fault detection functions, this embodiment significantly improves the automation and intelligence level of the system. The intelligent recognition modules of the leveling mechanism 1 and the visual positioning mechanism 2 can automatically complete most operations, reducing human intervention and improving work efficiency. The fault detection function ensures the safe operation of the equipment and prevents losses caused by downtime due to malfunctions. The status monitoring function of the cleaning mechanism 5 further enhances the reliability and maintenance convenience of the system. This intelligent design not only simplifies the user's operation process but also maintains stable performance during long-term operation, meeting the needs of modern production.

[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A nozzle calibration device, characterized in that, include: The leveling mechanism (1) includes a leveling probe (101), a photoelectric switch (102) that cooperates with the leveling probe (101), and a driving component (103) for driving the nozzles (3) to press against the leveling probe (101). The driving component (103) drives several nozzles (3) to press against the leveling probe (101) in sequence, causing the leveling probe (101) to extend and retract, triggering the photoelectric switch (102) to obtain signal feedback. Based on the feedback from the photoelectric switch (102), the height of the nozzles (3) in the Z-axis direction is adjusted to determine the height setting of the nozzle. The visual positioning mechanism (2) includes a calibration camera (201) and a calculation unit. The calibration camera (201) takes pictures of the nozzle (3), and the calculation unit calculates the center position of the nozzle (3) and performs position compensation of the nozzle (3) in the X-axis and Y-axis directions when the nozzle (3) is printing.

2. The nozzle calibration device according to claim 1, characterized in that, The visual positioning mechanism (2) further includes a first mounting bracket (202), on which a housing (203) is provided. The housing (203) has a recessed receiving groove (4). The calibration camera (201) is located in the receiving groove (4). The opening of the receiving groove (4) is provided with a light-transmitting plate (204).

3. The nozzle calibration device according to claim 2, characterized in that, The receiving slot (4) is equipped with a supplementary LED (205).

4. The nozzle calibration device according to claim 2, characterized in that, It also includes a cleaning mechanism (5), which includes a horizontal moving component (51) and a rotary moving component (52). The horizontal moving component (51) includes a second mounting bracket (511), on which a motor (512) is mounted. The motor (512) is driven by a synchronous belt (513), which is driven by a lead screw (514). The lead screw (514) is mounted by a moving block (515), which is connected to the first mounting bracket (202). The motor (512) drives the synchronous belt (513) to move, and the synchronous belt (513) drives the lead screw (514) to rotate. The moving block (515) slides relative to the lead screw (514), thereby realizing the horizontal linear movement of the visual positioning mechanism (2).

5. A nozzle calibration device according to claim 4, characterized in that, The cleaning mechanism (5) also includes a wiping micro-hole plate (53) disposed on the housing (203), and the nozzle (3) rubs against the wiping micro-holes on the wiping micro-hole plate (53) to remove the waste material from the nozzle (3).

6. A nozzle calibration device according to claim 5, characterized in that, The rotating moving assembly (52) includes a blocking member (521) disposed on the second mounting bracket (511). The rotating moving assembly (52) also includes a discharge rotating plate (522). The discharge rotating plate (522) is rotatably disposed on the first mounting bracket (202). The housing (203) is hollow and forms a discharge channel (6). One end of the discharge rotating plate (522) is sealed to one side of the channel hole of the discharge channel (6) for receiving the glue from the nozzle (3). The end of the discharge rotating plate (522) away from the discharge channel (6) is used to abut against the blocking member (521) so that the discharge rotating plate (522) rotates to avoid the discharge channel (6).

7. A nozzle calibration device according to claim 6, characterized in that, The discharge rotary plate (522) has a first mounting post (523) at one end away from the discharge channel (6), and a second mounting post (524) is provided on the first mounting frame (202). A tension spring (525) is provided between the first mounting post (523) and the second mounting post (524).

8. A nozzle calibration device according to claim 6, characterized in that, The discharge channel (6) is equipped with a Teflon tube (7).

9. A nozzle calibration device according to claim 1, characterized in that, It also includes a receiving box (8) for receiving waste materials.

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