Glass plate AF spraying equipment convenient to operate and spraying method

Abstract

The invention discloses glass plate AF spraying equipment convenient to operate and a spraying method. The glass plate AF spraying equipment comprises a conveying belt, and the conveying belt is provided with a glass plate putting assembly, an AF spraying chamber, a curing chamber, a glass plate film covering assembly and a cutting assembly which are sequentially distributed in the conveying direction of the conveying belt; an AF spraying machine and a water mist state monitoring module used for monitoring the state of water mist sprayed by an atomizing head of the AF spraying machine are arranged in the AF spraying chamber, and the water mist state monitoring module is further used for controlling the AF spraying machine to stop spraying operation and giving an alarm when it is monitored that the water mist state is abnormal. By arranging the water mist state monitoring module, the form and light transmittance parameters of water mist sprayed by the atomizing nozzle are detected in real time, and the problem of nozzle blockage or abnormal coating atomization can be accurately recognized in combination with a double verification mechanism of visual images and light attenuation data. And when abnormality is detected, shutdown and alarm are immediately performed, so that the problem of non-uniform coating thickness caused by nozzle blockage is avoided, and the uniformity and yield of the AF coating are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and in particular to an easy-to-operate glass plate AF spraying equipment and a spraying method. Background Art

[0002] With the growing demand for functional coatings on glass surfaces in fields such as electronic display devices, optical glass, and architectural curtain walls, anti-fingerprint (AF) coating technology has become a key process for improving the hydrophobicity and anti-fouling properties of glass surfaces. Currently, the industrial production of AF coatings primarily utilizes a spraying method, where a nano-scale coating is evenly applied to the glass surface via an atomizing nozzle, which then solidifies to form a functional film. However, in actual production, the clogging of the atomizing nozzle seriously restricts the stability of the spraying process and the coating quality.

[0003] In the prior art, the clogging of atomizing nozzles is mainly caused by the following factors:

[0004] AF coatings usually contain high-viscosity resins or nanoparticles, which easily form residues inside the nozzle during the spraying process. In particular, the edge of the nozzle is more prone to paint accumulation due to surface tension, resulting in uneven coating thickness on the glass surface and low quality of the finished product.

[0005] Therefore, it is necessary to make a device that can monitor whether the atomizing nozzle is blocked to solve the above problem. Summary of the Invention

[0006] The main purpose of the present invention is to provide a glass plate AF spraying device and a spraying method that are easy to operate, aiming to solve the technical problem in the prior art that the atomizing nozzle is blocked, resulting in a decrease in product quality.

[0007] To achieve the above-mentioned object, the present invention proposes an easy-to-operate glass plate AF spraying device, comprising a conveyor belt, a glass plate delivery assembly arranged on the conveyor belt in sequence along the conveying direction of the conveyor belt, an AF spraying chamber, a curing chamber, a glass plate coating assembly, and a splitting assembly;

[0008] The glass plate delivery assembly is used to deliver the glass plate to be sprayed onto the conveyor belt; the AF spraying chamber is used to spray the coating on the glass plate to be sprayed to form a sprayed glass plate; the curing chamber is used to cure the coating on the sprayed glass plate to form a cured glass plate; the glass plate coating assembly is used to coat the cured glass plate with a film to form a coated glass plate;

[0009] The AF spraying room is provided with an AF sprayer and a water mist state monitoring module for monitoring the state of water mist sprayed from the atomizing head of the AF sprayer. The water mist state monitoring module is also used to control the AF sprayer to stop the spraying operation and issue an alarm when an abnormal water mist state is detected.

[0010] Preferably, the glass plate delivery assembly includes a shell with a hollow structure, the bottom wall of the inner wall of the shell is provided with a material frame for placing glass plates, the side wall of the shell is penetrated to form an opening for the conveyor belt to extend into, the driving head of the conveyor belt is located at the bottom of the inner wall of the shell, the top wall inside the shell is provided with a first slide, a cylinder is slidably provided on the first slide, the first slide is used to reciprocate and drive the cylinder from above the material frame to above the conveyor belt, the cylinder is located on the side close to the material frame, the output shaft of the cylinder is located on the side of the cylinder close to the material frame, a suction cup is provided at one end of the cylinder output shaft close to the material frame, the side of the suction cup facing away from the cylinder is recessed to form a concave cavity, the glass plate delivery assembly also includes an air pump arranged in the shell, the air pump is connected to the concave cavity on the outer wall of the suction cup through an air pipe.

[0011] Preferably, the glass plate coating assembly includes a first film roller detachably mounted on a conveyor belt driving head and a second film roller detachably mounted on a conveyor belt force bearing head, wherein film rolls are rotatably mounted on both the first film roller and the second film roller.

[0012] The glass plate covering assembly further includes a bracket disposed on a force-bearing head of the conveyor belt, the bracket being provided with a first roller assembly rotatably connected thereto, the first roller assembly including a first shaft member and a second shaft member symmetrically distributed up and down, each of the first shaft member and the second shaft member being composed of a plurality of rollers distributed laterally at intervals; the rotation direction of the rollers of the first shaft member and the second shaft member being in the same direction as the conveying direction of the conveyor belt;

[0013] The films on the first film roller and the second film roller both pass between the first shaft and the second shaft in the direction of rotation of the first shaft and the second shaft, so as to coat the glass plate when the glass plate passes through the first shaft and the second shaft.

[0014] Preferably, the invention further comprises a splitting assembly for splitting the protective film between the plurality of coated glass sheets; the splitting assembly comprises a second roller assembly disposed on a side of the first roller assembly facing away from the conveyor belt, the second roller assembly being rotatably mounted on a bracket, the second roller assembly comprising a third shaft member and a fourth shaft member symmetrically distributed vertically, the third shaft member and the fourth shaft member both comprising a plurality of rollers spaced laterally apart; the rotation direction of the rollers of the third shaft member and the fourth shaft member is the same as the conveying direction of the conveyor belt;

[0015] The cutting assembly also includes a second slide arranged on the bracket, a cutting knife slides on the second slide, the sliding direction of the cutting knife is perpendicular to the conveying direction of the conveyor belt, and the cutting knife is located between the first roller group and the second roller group.

[0016] Preferably, the coating monitoring module includes a visual image comparison unit, a light transmittance monitoring unit and a data processing unit;

[0017] The visual image comparison unit is used to monitor the shape of the water mist sprayed from the atomizing head in real time to form a real-time water mist shape image;

[0018] The light attenuation monitoring unit is used to monitor the transmittance of the paint sprayed from the atomizing head in real time to generate real-time light attenuation data;

[0019] The data processing unit is used to store a standard database; it is also used to obtain real-time water mist morphology images and calculate and compare the real-time water mist morphology images with the data in the standard database; it is also used to obtain real-time light attenuation data and calculate and compare the real-time light attenuation data with the data in the standard database.

[0020] Preferably, the visual image comparison unit includes a high-speed industrial camera arranged in the AF spraying room, the high-speed industrial camera moves together with the atomizing nozzle of the AF spraying machine, and the high-speed industrial camera is used to capture the image of the water mist sprayed by the atomizing nozzle to form the real-time water mist morphology image;

[0021] The light attenuation monitoring unit includes a plurality of laser sensors arranged in the AF sprayer, and the plurality of laser sensors are distributed in a row in the AF sprayer. The plurality of laser sensors are used to irradiate a plurality of different points of the water mist. The AF sprayer is also provided with a plurality of optical power meters, and the plurality of laser sensors are connected to the plurality of optical power meters in a one-to-one correspondence; the plurality of laser sensors cooperate with the plurality of optical power meters to form a plurality of real-time light attenuation data through one-to-one calculation.

[0022] Preferably, the data in the standard database includes standard spraying water mist effect images and standard water mist transparency data;

[0023] After acquiring the real-time water mist form image, the data processing unit matches the acquired real-time water mist form image with the standard spray water mist effect image to calculate the image similarity; if the similarity exceeds a preset threshold, it is determined that the spraying is abnormal, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the similarity is within the preset threshold range, the AF sprayer is maintained in normal operation;

[0024] The light attenuation monitoring unit further includes a light intensity sensor for detecting ambient light in the AF spraying room and forming basic light intensity data;

[0025] The data processing unit obtains basic light intensity data while obtaining multiple real-time light attenuation data, and calculates the transparency value of the water mist monitoring point corresponding to each real-time light attenuation data one by one; if three or more transparency values ​​exceed the preset threshold, it is determined to be a spraying abnormality, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the transparency value exceeding the threshold is less than three, the normal operation of the AF sprayer is maintained.

[0026] Preferably, the calculation formula of the light transmittance is:

[0027]

[0028] in:

[0029] T x : Real-time light transmittance;

[0030] I x : Current light attenuation data;

[0031] I ref : Benchmark light intensity data in the non-spraying state.

[0032] Preferably, the reference light intensity value I ref Dynamic calibration via:

[0033] (a) Before the spraying operation begins, control the nozzle to close and collect N consecutive sets of light intensity data;

[0034] (b) After removing abnormal fluctuation data, calculate the average value:

[0035]

[0036] (c) During the spraying process, I is automatically updated every time t ref , to compensate for ambient light drift.

[0037] The present invention further provides a spraying method for a glass plate AF spraying device that is easy to operate, using the glass plate AF spraying device that is easy to operate as described in any one of the above claims, and the spraying method for the glass plate AF spraying device that is easy to operate comprises the following steps:

[0038] S1: Place the glass sheet in the material frame. The first slide drives the cylinder to move above the material frame. The cylinder drives the suction cup to move toward the side close to the material frame. After the suction cup contacts the glass sheet in the material frame, the air pump works to extract the air in the cavity so that the glass sheet is adsorbed on the suction cup. The cylinder output shaft contracts to move the glass sheet away from the material frame. The first slide drives the cylinder to move above the conveyor belt. The air pump injects air into the cavity so that the glass sheet is separated from the suction cup and falls onto the conveyor belt.

[0039] S2: The conveyor belt drives the glass plate to move toward the side away from the glass plate delivery assembly. During the movement of the glass plate, the AF spraying chamber sprays the AF spraying chamber, the curing chamber cures the paint after the spraying, and the glass plate coating assembly coats the glass after the curing operation;

[0040] S3: If the paint monitoring module detects that the water mist sprayed from the atomizing nozzle of the AF sprayer is abnormal, the AF sprayer is controlled to stop working, otherwise no operation is performed.

[0041] The technical solution of this invention incorporates a water mist status monitoring module to monitor the morphology and light transmittance of the water mist sprayed from the atomizing nozzle in real time. This dual verification mechanism, combined with visual images and light attenuation data, can accurately identify nozzle blockage or abnormal paint atomization. When an anomaly is detected, the machine is immediately shut down and an alarm is issued, preventing uneven coating thickness caused by nozzle blockage. This significantly improves the uniformity and yield of AF coatings while reducing manual inspection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 It is a schematic structural diagram of the material coating component and the segmentation component of the present invention;

[0045] Figure 3 For the present invention Figure 1 Schematic diagram of the local enlarged structure of area A.

[0046] Description of Figure Numbers:

[0047] 1. Conveyor belt; 2. Glass plate delivery assembly; 21. Housing; 22. First slide; 23. Cylinder; 24. Suction cup; 24a. Concave cavity; 25. Material frame; 26. Air pipe; 3. AF spray chamber; 4. Curing chamber; 5. Glass plate coating assembly; 51. First film roller; 52. Second film roller; 53. First shaft; 54. Second shaft; 6. Splitting assembly; 61. Fourth shaft; 62. Third shaft; 63. Second slide; 64. Cutting knife; 7. Storage basket.

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0052] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] The present invention provides a glass plate AF spraying device and a spraying method which are easy to operate.

[0055] Please refer to Figures 1 to 3 The easy-to-operate glass plate AF spraying equipment includes a conveyor belt 1, a glass plate delivery assembly 2, an AF spraying chamber 3, a curing chamber 4, a glass plate coating assembly 5 and a splitting assembly 6, which are arranged on the conveyor belt 1 in sequence according to the conveying direction of the conveyor belt 1;

[0056] The glass plate delivery assembly 2 is used to deliver the glass plate to be sprayed onto the conveyor belt 1; the AF spraying chamber 3 is used to spray the coating on the glass plate to be sprayed to form a sprayed glass plate; the curing chamber 4 is used to cure the coating on the sprayed glass plate to form a cured glass plate; the glass plate coating assembly 5 is used to coat the cured glass plate with a film to form a coated glass plate;

[0057] The AF spraying room 3 is provided with an AF sprayer and a water mist state monitoring module for monitoring the state of water mist sprayed from the atomizing head of the AF sprayer. The water mist state monitoring module is also used to control the AF sprayer to stop spraying and issue an alarm when abnormal water mist state is detected.

[0058] The technical solution of this invention incorporates a water mist status monitoring module to monitor the morphology and light transmittance of the water mist sprayed from the atomizing nozzle in real time. This dual verification mechanism, combined with visual images and light attenuation data, can accurately identify nozzle blockage or abnormal paint atomization. When an anomaly is detected, the machine is immediately shut down and an alarm is issued, preventing uneven coating thickness caused by nozzle blockage. This significantly improves the uniformity and yield of AF coatings while reducing manual inspection costs.

[0059] Please refer to the attached Figure 1 and 3 The glass plate delivery assembly 2 includes a hollow structure shell 21, the inner wall and bottom wall of the shell 21 is provided with a material frame 25 for placing the glass plate, the side wall of the shell 21 is penetrated by an opening for the conveyor belt 1 to extend into, the driving head of the conveyor belt 1 is located at the bottom of the inner wall of the shell 21, and the inner top wall of the shell 21 is provided with a first slide 22, and a cylinder 23 is slidably provided on the first slide 22, and the first slide 22 is used to reciprocate and drive the cylinder 23 from above the material frame 25 to above the conveyor belt 1. The cylinder 23 is located on the side close to the material frame 25, and the output shaft of the cylinder 23 is located on the side of the cylinder 23 close to the material frame 25. A suction cup 24 is provided at one end of the output shaft of the cylinder 23 close to the material frame 25, and the side of the suction cup 24 facing away from the cylinder 23 is recessed to form a concave cavity 24a. The glass plate delivery assembly 2 also includes an air pump arranged in the shell 21, and the air pump is connected to the concave cavity 24a on the outer wall of the suction cup 24 through an air pipe 26.

[0060] The driving head is the front end of the belt conveyor, usually placed at the loading point, and is mainly used to drive the operation of the conveyor belt. The force-bearing head is the rear end of the belt conveyor, usually placed at the unloading point, and is mainly used to support the conveyor belt and bear force. The glass plate is placed in the material frame 25, and the first slide 22 drives the cylinder 23 to move above the material frame 25. The cylinder 23 drives the suction cup 24 to move toward the side close to the material frame 25. After the suction cup 24 contacts the glass plate in the material frame 25, the air pump works to extract the air in the cavity 24a to make the glass plate adsorbed on the suction cup 24. The output shaft of the cylinder 23 contracts to make the glass plate move away from the material frame 25. The first slide 22 drives the cylinder 23 to move above the conveyor belt 1, and the air pump injects air into the cavity 24a to make the glass plate separate from the suction cup 24 and fall onto the conveyor belt 1. This reciprocating process is used to achieve material grabbing and delivery.

[0061] The slide and pneumatic suction cup 24 are designed in tandem, utilizing negative pressure from an air pump and precise movement of the slide to automatically deliver glass sheets from the material frame 25 to the conveyor belt 1. The concave cavity 24a enhances suction stability, preventing the glass sheets from slipping or shifting, improving delivery efficiency while reducing manual operation risks. This makes it particularly suitable for the continuous production of large, fragile glass sheets.

[0062] Please refer to the attached Figure 2 The glass plate coating assembly 5 includes a first film roller 51 detachably mounted on the driving head of the conveyor belt 1 and a second film roller 52 detachably mounted on the force-bearing head of the conveyor belt 1 , wherein a film roll is rotatably mounted on both the first film roller 51 and the second film roller 52;

[0063] The glass plate covering assembly further includes a bracket disposed at the force-bearing head of the conveyor belt 1, the bracket being provided with a first roller assembly 53 rotatably connected thereto, the first roller assembly 53 including a first shaft member 53 and a second shaft member 54 symmetrically distributed up and down, each of the first shaft member 53 and the second shaft member 54 being composed of a plurality of rollers distributed laterally at intervals; the rotation direction of the rollers of the first shaft member 53 and the second shaft member 54 is in the same direction as the conveying direction of the conveyor belt 1;

[0064] The films on the first film roller 51 and the second film roller 52 both pass between the first shaft 53 and the second shaft 54 ​​in the direction of rotation of the first shaft 53 and the second shaft 54, so that the glass plate is coated when passing through the first shaft 53 and the second shaft 54.

[0065] Pull the film on the first film roller 51 toward the side close to the first roller group 53 and pass it between the first shaft 53 and the second shaft 54, so that the film on the first film roller 51 covers the conveyor belt 1; pull the film on the second film roller 52 from the side of the first roller group 53 close to the conveyor belt 1 to the side away from the conveyor belt 1 and pass it between the first shaft 53 and the second shaft 54;

[0066] During processing, a glass plate is placed on a film on the conveyor belt 1 (the film on the first film roller 51). When the conveyor belt 1 rotates and drives the glass plate to move to the force-bearing head, the glass plate contacts the roller of the first shaft 53 and the roller of the second shaft 54, and is driven by the roller of the first shaft 53 and the roller of the second shaft 54 ​​at the same time to pass between the first shaft 53 and the second shaft 54. In the process of the glass plate passing through, the film on the second film roller 52 covers the top of the glass plate, and further, a rolling clamping force is applied to the glass plate simultaneously by the roller of the first shaft 53 and the roller of the second shaft 54, so that when the glass plate moves toward the side away from the conveyor belt 1, the film on the first film roller 51 and the film on the second film roller 52 cover the upper and lower sides of the glass plate, thereby completing the coating operation on the glass plate.

[0067] The dual film rollers and multi-roller assembly work together to simultaneously coat the glass surface from both sides, ensuring uniform lamination tension and eliminating residual bubbles. The co-rotating design of the first roller assembly 53 prevents scratches caused by relative sliding between the film and the glass, improving lamination smoothness and enabling continuous lamination, significantly increasing batch production efficiency.

[0068] Please refer to the attached Figure 1 , further comprising a splitting assembly 6 for splitting the protective film between the plurality of coated glass plates; the splitting assembly 6 comprises a second roller assembly 54 disposed on the side of the first roller assembly 53 facing away from the conveyor belt 1, the second roller assembly 54 being rotatably disposed on a bracket, the second roller assembly 54 comprising a third shaft 62 and a fourth shaft 61 symmetrically distributed vertically, the third shaft 62 and the fourth shaft 61 both being composed of a plurality of rollers spaced laterally apart; the rotation direction of the rollers of the third shaft 62 and the fourth shaft 61 is the same as the conveying direction of the conveyor belt 1;

[0069] The cutting assembly 6 also includes a second slide 63 arranged on the bracket, and a cutting knife 64 slides on the second slide 63. The sliding direction of the cutting knife 64 is perpendicular to the conveying direction of the conveyor belt 1. The cutting knife 64 is located between the first roller group 53 and the second roller group 54.

[0070] As the glass sheets move away from the conveyor belt 1 and are coated, they come into contact with the rollers of the third shaft 62 and the fourth shaft 61. Driven by the rollers of the third shaft 62 and the fourth shaft 61, they continue to move away from the first roller assembly 53. When the film connecting the glass sheets passes through the cutting blade 64, the second slide 63 drives the cutting belt to cut the film, thereby separating the two connected glass sheets.

[0071] The cutting blade 64 is in an "X" shape, so that the film can be cut while the cutting blade 64 moves back and forth, thereby reducing the working time of the second slide 63 and increasing its service life;

[0072] A storage basket 7 for receiving the cut and separated parts is also provided under the bracket, so that the parts after lamination and cutting and separation automatically fall into the storage basket 7, eliminating the need for manual labor to stay near the machine at all times, thus reducing workload;

[0073] A second roller assembly 54 is coupled to a cutting blade 64. After lamination, the slide drives the cutting blade 64 to cut the protective film horizontally, enabling rapid separation of the coated glass sheets. The vertically symmetrical third and fourth shafts 61 provide stable film tension support, preventing film wrinkling or shifting during cutting, ensuring accurate separation, minimizing material waste, and adapting to the processing needs of glass sheets of varying sizes.

[0074] Please refer to the attached Figure 1 , the coating monitoring module includes a visual image comparison unit, a transmittance monitoring unit and a data processing unit;

[0075] The visual image comparison unit is used to monitor the shape of the water mist sprayed from the atomizing head in real time to form a real-time water mist shape image;

[0076] The light attenuation monitoring unit is used to monitor the transmittance of the paint sprayed from the atomizing head in real time to generate real-time light attenuation data;

[0077] The data processing unit is used to store a standard database; it is also used to obtain real-time water mist morphology images and calculate and compare the real-time water mist morphology images with the data in the standard database; it is also used to obtain real-time light attenuation data and calculate and compare the real-time light attenuation data with the data in the standard database.

[0078] By integrating dual data from visual image comparison and transmittance monitoring, combined with dynamic comparison against a standard database, the degree of nozzle blockage and paint atomization uniformity can be comprehensively determined. Multi-parameter collaborative analysis (such as image similarity and transparency values) significantly improves the accuracy of anomaly detection, reduces the probability of misjudgment by a single sensor, and ensures reliable spray quality control.

[0079] Please refer to the attached Figure 1The visual image comparison unit includes a high-speed industrial camera arranged in the AF spraying room 3. The high-speed industrial camera moves together with the atomizing nozzle of the AF spraying machine. The high-speed industrial camera is used to capture the image of the water mist sprayed by the atomizing nozzle to form the real-time water mist morphology image;

[0080] The light attenuation monitoring unit includes a plurality of laser sensors arranged in the AF sprayer, and the plurality of laser sensors are distributed in a row in the AF sprayer. The plurality of laser sensors are used to irradiate a plurality of different points of the water mist. The AF sprayer is also provided with a plurality of optical power meters, and the plurality of laser sensors are connected to the plurality of optical power meters in a one-to-one correspondence; the plurality of laser sensors cooperate with the plurality of optical power meters to form a plurality of real-time light attenuation data through one-to-one calculation.

[0081] The combination of high-speed industrial cameras and laser sensors covers both macroscopic observation (imaging) of water mist morphology and microscopic light transmission characteristics (light attenuation) detection. Multi-point scanning of the laser array combined with feedback from an optical power meter can pinpoint localized blockages. The camera's tracking design avoids blind spots, enabling dynamic monitoring of the entire nozzle operating area and improving fault location efficiency.

[0082] Please refer to the attached Figure 1 , the data in the standard database includes standard spraying water mist effect images and standard water mist transparency data;

[0083] After acquiring the real-time water mist form image, the data processing unit matches the acquired real-time water mist form image with the standard spray water mist effect image to calculate the image similarity; if the similarity exceeds a preset threshold, it is determined that the spraying is abnormal, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the similarity is within the preset threshold range, the AF sprayer is maintained in normal operation;

[0084] The light attenuation monitoring unit further includes a light intensity sensor for detecting the ambient light in the AF spray booth 3 and forming basic light intensity data;

[0085] The data processing unit obtains basic light intensity data while obtaining multiple real-time light attenuation data, and calculates the transparency value of the water mist monitoring point corresponding to each real-time light attenuation data one by one; if three or more transparency values ​​exceed the preset threshold, it is determined to be a spraying abnormality, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the transparency value exceeding the threshold is less than three, the normal operation of the AF sprayer is maintained.

[0086] The calculation is based on basic light intensity data to reduce the impact of external light on the transparency of water mist. The optical power meter measures the power difference between the transmitting and receiving ends of the laser sensor to calculate the light attenuation, which is the light attenuation data. The water mist transparency is calculated based on the light attenuation data. The larger the light attenuation value, the lower the water mist transparency, and the lower the light attenuation value, the higher the water mist transparency.

[0087] A dynamic calibration mechanism for ambient light intensity is introduced to eliminate interference from ambient light source fluctuations on transmittance monitoring by real-time correction of the reference light intensity data (e.g., formula (2)). A tiered judgment threshold is set (e.g., "shut down only when three or more abnormalities occur") to avoid frequent erroneous shutdowns caused by occasional interference, balance production continuity with quality control requirements, and optimize the overall operating efficiency of the equipment.

[0088] Please refer to the attached Figure 1 , the calculation formula of the light transmittance is:

[0089]

[0090] in:

[0091] T x : Real-time light transmittance;

[0092] I x : Current light attenuation data;

[0093] I ref : Benchmark light intensity data in the non-spraying state.

[0094] T x The unit is %, I x The unit is lux, I ref The unit is lux;

[0095] Light transmittance step example:

[0096] A1: Initialize the measured I ref =60.0lux;

[0097] A2: Real-time detection of a certain area I x =45.2lux;

[0098] A3: Calculate the transmittance value:

[0099]

[0100] Please refer to the attached Figure 1 , the reference light intensity value I ref Dynamic calibration via:

[0101] (a) Before the spraying operation begins, control the nozzle to close and collect N consecutive sets of light intensity data;

[0102] (b) After removing abnormal fluctuation data, calculate the average value:

[0103]

[0104] (c) During the spraying process, I is automatically updated every time t ref , to compensate for ambient light drift.

[0105] Example of the steps for collecting and calculating the reference light intensity data:

[0106] B1: After the AF sprayer is started, the atomizing nozzle is closed and the laser sensor light source is turned on;

[0107] B2: Continuously collect light intensity sensor data at a frequency of 100 Hz, obtaining a total of N = 6 sets of data (unit: lux); Note: The fourth set of data, 132.5 lux, is an abnormal value (sudden interference from ambient light);

[0108] B3: Using the 3σ principle (standard deviation σ = 0.2 lux), any value outside the range of mean μ = 60.0 ± 3 × 0.2 is considered abnormal;

[0109] B4: Remove the fourth group of 132.5lux, leaving 5 groups of valid data;

[0110] B5: Newly collected data is: I ref,i =[65.2, 65.0, 65.3, 64.9, 65.1]

[0111] B6: Calculate new reference light intensity data:

[0112]

[0113] Note: Assume that the ambient light is collected every N hours.

[0114] The present invention further provides a spraying method for a glass plate AF spraying device that is easy to operate, using the glass plate AF spraying device that is easy to operate as described in any one of the above claims, and the spraying method for the glass plate AF spraying device that is easy to operate comprises the following steps:

[0115] S1: A glass sheet is placed in the material frame 25. The first slide 22 drives the cylinder 23 to move above the material frame 25. The cylinder 23 drives the suction cup 24 to move toward the side close to the material frame 25. After the suction cup 24 contacts the glass sheet in the material frame 25, the air pump operates to extract the air in the cavity 24a, so that the glass sheet is adsorbed on the suction cup 24. The output shaft of the cylinder 23 contracts to move the glass sheet away from the material frame 25. The first slide 22 drives the cylinder 23 to move above the conveyor belt 1. The air pump injects air into the cavity 24a, so that the glass sheet is separated from the suction cup 24 and falls onto the conveyor belt 1.

[0116] S2: The conveyor belt 1 drives the glass plate to move toward the side away from the glass plate feeding assembly 2. During the movement of the glass plate, the AF spraying chamber 3 performs a spraying operation on the AF spraying chamber 3, the curing chamber 4 cures the paint in the AF spraying chamber 3 after the spraying, and the glass plate coating assembly 5 coats the glass after the curing operation;

[0117] S3: If the paint monitoring module detects that the water mist sprayed from the atomizing nozzle of the AF sprayer is abnormal, the AF sprayer is controlled to stop working, otherwise no operation is performed.

[0118] An integrated control approach based on a fully automated process (depositing → spraying → curing → laminating → cutting), coupled with real-time abnormality monitoring and shutdown mechanisms, significantly reduces manual intervention. Standardized operations in steps S1-S3 ensure consistency in the glass sheet processing process, making it particularly suitable for large-scale production of high-precision AF coatings while also reducing scrap rates due to manual errors.

[0119] The specific operation method of the present invention is as follows: first, a glass sheet is placed in the material frame 25, the first slide 22 drives the cylinder 23 to move above the material frame 25, and the cylinder 23 drives the suction cup 24 to move toward the side close to the material frame 25. After the suction cup 24 contacts the glass sheet in the material frame 25, the air pump works to extract the air in the cavity 24a, so that the glass sheet is adsorbed on the suction cup 24. The output shaft of the cylinder 23 contracts to move the glass sheet away from the material frame 25. The first slide 22 drives the cylinder 23 to move above the conveyor belt 1, and the air pump injects air into the cavity 24a, so that the glass sheet is separated from the suction cup 24 and falls onto the conveyor belt 1. This reciprocating process is used to achieve the grabbing and delivery of materials.

[0120] The conveyor belt 1 sends the glass plate into the AF spray chamber 3, and the atomizing nozzle atomizes the paint to form water mist. The high-speed camera captures the water mist image in real time, compares it with the standard image, and calculates the similarity (an alarm is triggered if it is lower than the threshold). The laser sensor array irradiates the water mist, the optical power meter receives the signal, and calculates the transmittance based on the reference value (the machine is shut down if there are ≥3 abnormal points). When an abnormality is detected, the spraying is stopped immediately, the sound and light alarm is triggered, the HMI displays the fault location, and manual intervention is required to clean or replace the nozzle. After spraying, the glass enters the curing chamber 4, and the coating is cured by ultraviolet light. The double-film rollers synchronously release the protective film, which is pressed onto the glass surface by the roller group. The cutting knife 64 cuts the film layer horizontally to complete the segmentation.

[0121] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A glass plate AF spraying device that is easy to operate, characterized in that: The conveyor belt comprises a glass plate delivery assembly, an AF spraying chamber, a curing chamber, a glass plate coating assembly and a splitting assembly which are sequentially distributed along the conveying direction of the conveyor belt. The glass plate delivery assembly is used to deliver the glass plate to be sprayed onto the conveyor belt; the AF spraying chamber is used to spray the coating on the glass plate to be sprayed to form a sprayed glass plate; the curing chamber is used to cure the coating on the sprayed glass plate to form a cured glass plate; the glass plate coating assembly is used to coat the cured glass plate with a film to form a coated glass plate; The AF spraying room is provided with an AF sprayer and a water mist state monitoring module for monitoring the state of water mist sprayed from the atomizing head of the AF sprayer. The water mist state monitoring module is also used to control the AF sprayer to stop the spraying operation and issue an alarm when an abnormal water mist state is detected.

2. The easy-to-operate glass plate AF spraying equipment according to claim 1, characterized in that: The glass plate delivery assembly includes a shell with a hollow structure, the bottom wall of the inner wall of the shell is provided with a material frame for placing glass plates, the side wall of the shell is penetrated by an opening for the conveyor belt to extend into, the driving head of the conveyor belt is located at the bottom of the inner wall of the shell, the top wall inside the shell is provided with a first slide, a cylinder is slidably provided on the first slide, the first slide is used to reciprocate and drive the cylinder from above the material frame to above the conveyor belt, the cylinder is located on the side close to the material frame, the output shaft of the cylinder is located on the side of the cylinder close to the material frame, the end of the cylinder output shaft close to the material frame is provided with a suction cup, and the side of the suction cup facing away from the cylinder is recessed to form a concave cavity, the glass plate delivery assembly also includes an air pump arranged in the shell, and the air pump is connected to the concave cavity on the outer wall of the suction cup through an air pipe.

3. The easy-to-operate glass plate AF spraying equipment according to claim 1, characterized in that: The glass plate coating assembly comprises a first film roller detachably mounted on a conveyor belt driving head and a second film roller detachably mounted on a conveyor belt force bearing head, wherein a film roll is rotatably mounted on both the first film roller and the second film roller. The glass plate covering assembly further includes a bracket disposed on a force-bearing head of the conveyor belt, the bracket being provided with a first roller assembly rotatably connected thereto, the first roller assembly including a first shaft member and a second shaft member symmetrically distributed up and down, each of the first shaft member and the second shaft member being composed of a plurality of rollers distributed laterally at intervals; the rotation direction of the rollers of the first shaft member and the second shaft member being in the same direction as the conveying direction of the conveyor belt; The films on the first film roller and the second film roller both pass between the first shaft and the second shaft in the direction of rotation of the first shaft and the second shaft, so as to coat the glass plate when the glass plate passes through the first shaft and the second shaft.

4. The easy-to-operate glass plate AF spraying equipment according to claim 3, characterized in that: The invention also includes a splitting assembly for splitting the protective film between the plurality of film-coated glass sheets; the splitting assembly includes a second roller assembly disposed on a side of the first roller assembly facing away from the conveyor belt, the second roller assembly being rotatably mounted on a bracket, the second roller assembly including a third shaft member and a fourth shaft member symmetrically distributed vertically, the third shaft member and the fourth shaft member each comprising a plurality of rollers spaced laterally apart; the rollers of the third shaft member and the fourth shaft member rotate in the same direction as the conveying direction of the conveyor belt; The cutting assembly also includes a second slide arranged on the bracket, a cutting knife slides on the second slide, the sliding direction of the cutting knife is perpendicular to the conveying direction of the conveyor belt, and the cutting knife is located between the first roller group and the second roller group.

5. The easy-to-operate glass plate AF spraying equipment according to claim 1, characterized in that: The coating monitoring module includes a visual image comparison unit, a light transmittance monitoring unit and a data processing unit; The visual image comparison unit is used to monitor the shape of the water mist sprayed from the atomizing head in real time to form a real-time water mist shape image; The light attenuation monitoring unit is used to monitor the transmittance of the paint sprayed from the atomizing head in real time to generate real-time light attenuation data; The data processing unit is used to store a standard database; it is also used to obtain real-time water mist morphology images and calculate and compare the real-time water mist morphology images with the data in the standard database; it is also used to obtain real-time light attenuation data and calculate and compare the real-time light attenuation data with the data in the standard database.

6. The easy-to-operate glass plate AF spraying equipment according to claim 5, characterized in that: The visual image comparison unit includes a high-speed industrial camera disposed in the AF spray chamber, the high-speed industrial camera moving along with the atomizing nozzle of the AF spray machine, and the high-speed industrial camera is used to capture an image of the water mist sprayed from the atomizing nozzle to form the real-time water mist morphology image; The light attenuation monitoring unit includes a plurality of laser sensors arranged in the AF sprayer, and the plurality of laser sensors are distributed in a row in the AF sprayer. The plurality of laser sensors are used to irradiate a plurality of different points of the water mist. The AF sprayer is also provided with a plurality of optical power meters, and the plurality of laser sensors are connected to the plurality of optical power meters in a one-to-one correspondence; the plurality of laser sensors cooperate with the plurality of optical power meters to form a plurality of real-time light attenuation data through one-to-one calculation.

7. The easy-to-operate AF spraying equipment for glass sheets according to claim 6, characterized in that: The data in the standard database includes standard spraying water mist effect images and standard water mist transparency data; After acquiring the real-time water mist form image, the data processing unit matches the acquired real-time water mist form image with the standard spray water mist effect image to calculate the image similarity; if the similarity exceeds a preset threshold, it is determined that the spraying is abnormal, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the similarity is within the preset threshold range, the AF sprayer is maintained in normal operation; The light attenuation monitoring unit further includes a light intensity sensor for detecting ambient light in the AF spraying room and forming basic light intensity data; The data processing unit obtains basic light intensity data while obtaining multiple real-time light attenuation data, and calculates the transparency value of the water mist monitoring point corresponding to each real-time light attenuation data one by one; if three or more transparency values ​​exceed the preset threshold, it is determined to be a spraying abnormality, and the AF sprayer is controlled to stop working and the sound and light alarm device is activated; if the transparency value exceeding the threshold is less than three, the normal operation of the AF sprayer is maintained.

8. The easy-to-operate AF spraying equipment for glass sheets according to claim 7, characterized in that: The calculation formula of the light transmittance is: in: T x : Real-time light transmittance; I x : Current light attenuation data; I ref : Benchmark light intensity data in the non-spraying state.

9. The easy-to-operate AF spraying equipment for glass sheets according to claim 8, characterized in that: The reference light intensity value I ref Dynamic calibration via: (a) Before the spraying operation begins, control the nozzle to close and collect N consecutive sets of light intensity data; (b) After removing abnormal fluctuation data, calculate the average value: (c) During the spraying process, I is automatically updated every time t ref , to compensate for ambient light drift.

10. A spraying method for glass plate AF spraying equipment with easy operation, characterized in that: The glass plate AF spraying device that is easy to operate according to any one of claims 1 to 9 is used, and the spraying method of the glass plate AF spraying device that is easy to operate comprises the following steps: S1: Place the glass sheet in the material frame. The first slide drives the cylinder to move above the material frame. The cylinder drives the suction cup to move toward the side close to the material frame. After the suction cup contacts the glass sheet in the material frame, the air pump works to extract the air in the cavity so that the glass sheet is adsorbed on the suction cup. The cylinder output shaft contracts to move the glass sheet away from the material frame. The first slide drives the cylinder to move above the conveyor belt. The air pump injects air into the cavity so that the glass sheet is separated from the suction cup and falls onto the conveyor belt. S2: The conveyor belt drives the glass plate to move toward the side away from the glass plate delivery assembly. During the movement of the glass plate, the AF spraying chamber sprays the AF spraying chamber, the curing chamber cures the paint after the spraying, and the glass plate coating assembly coats the glass after the curing operation; S3: If the paint monitoring module detects that the water mist sprayed from the atomizing nozzle of the AF sprayer is abnormal, the AF sprayer is controlled to stop working, otherwise no operation is performed.

Images