Glass plate thickness automatic detection device for coating production line

Abstract

The utility model discloses a coating production line glass plate thickness automatic detection device, which comprises a support table provided with a carrier roller and a conveyor belt and a controller, and further comprises a mounting frame mounted at the upper end of the support table, a support plate I is arranged on one side of the top of the mounting frame, a support plate II is arranged on the other side of the top of the mounting frame, and the support plate I is connected with the support plate II. A pressing roller assembly is correspondingly arranged on the lower side of the first supporting plate and used for detecting the thickness of the glass plate, and a driving assembly is correspondingly arranged on the lower side of the second supporting plate. According to the coating production line glass plate thickness automatic detection device provided by the utility model, the thickness of the glass plate is detected through the compression roller assembly, the compression roller moves up and down according to the thickness of the glass plate, and the displacement sensor collects displacement data of the compression roller in real time to reflect the thickness change of the glass; according to the device, the thickness of the glass is automatically detected, errors caused by manual measurement are avoided, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically an automatic detection device for the thickness of glass plates in a coating production line. Background Technology

[0002] After coating a glass plate, its thickness needs to be tested, primarily because it directly determines the accuracy of optical performance (such as reflectivity and transmittance). Ensuring film uniformity avoids functional malfunctions or material waste. Simultaneously, precise total thickness control is a mandatory requirement for subsequent assembly matching and safety and sealing standards. Furthermore, monitoring process stability reduces waste and optimizes costs, thereby ensuring a balance between product quality and economic efficiency.

[0003] In existing glass coating production lines, the detection of glass thickness and the adjustment of equipment parameters have the following technical deficiencies:

[0004] Manual operation is inefficient: The glass thickness needs to be measured manually with calipers or laser thickness gauges after the machine is stopped. Each measurement takes 3-5 minutes, which reduces the efficiency of the production line.

[0005] Accuracy depends on experience: manual measurement is easily affected by the operator's subjective factors, and the thickness measurement error can reach more than ±0.1mm, which leads to uneven coating thickness.

[0006] Poor equipment adaptability: The spacing between coating rollers needs to be repeatedly adjusted for glass of different thicknesses. Traditional mechanical limit devices cannot respond to thickness changes in real time, resulting in an increased scrap rate.

[0007] Therefore, an automatic detection device for glass plate thickness in a coating production line is proposed to solve the above problems. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an automatic detection device for the thickness of glass plates in a coating production line, with the aim of solving the aforementioned problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An automatic glass plate thickness detection device for a coating production line includes a support platform equipped with rollers and a conveyor belt, and a controller; it also includes:

[0011] The upper end of the support platform is equipped with an installation frame. One side of the top of the installation frame is a support plate one, and the other side of the top of the installation frame is a support plate two. A pressure roller assembly is correspondingly arranged on the lower side of the support plate one to detect the thickness of the glass plate. A drive assembly is correspondingly arranged on the lower side of the support plate two. Limiting components that can move away from or close to each other are driven to the two sides of the drive assembly to limit and constrain the glass plate.

[0012] Preferably, the pressure roller assembly further includes two electric push rods, which are fixed to the support plate via their mounting bases. The output ends of the two electric push rods are respectively fixed with convex connectors, and a pressure roller is rotatably connected between the two convex connectors. Displacement sensors are provided on both sides of the pressure roller, and the displacement sensors are fixedly installed on the side of the convex connectors near the pressure roller. The displacement sensors are connected to the controller signal and the thickness is detected by the difference in lifting displacement of the pressure roller.

[0013] Preferably, the drive assembly further includes a driver installed on the lower side of the support plate two. The driver is specifically installed and fixed to the support plate two through its outer protective shell. The output shafts on both sides of the driver are respectively connected to screws. The threads on the surfaces of the two screws are in opposite directions. The end of each screw away from the driver is rotatably connected to the corresponding mounting frame. The driver drives the two screws to rotate simultaneously.

[0014] Preferably, the limiting assembly further includes a movable frame threadedly connected to the screw, and a limiting plate is fixed to the lower side of the movable frame through a connecting frame. Several rotating cylinders are evenly rotatably arranged on the opposite side of the two limiting plates.

[0015] Preferably, the surfaces of the pressure roller and the idler roller are provided with an anti-slip coating, the thickness of which is 20 μm.

[0016] Preferably, the pressure roller assembly is provided on both sides, and the convex connecting member is uniformly and rotatably arranged on both sides, and contacts the corresponding positions.

[0017] Preferably, the screw has support rods fixed in the mounting frame on both sides, and the support rods pass through both sides of the movable frame to limit and support the movement of the limiting component.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides an automatic glass thickness detection device for a coating production line. The device detects the thickness of the glass plate through a pressure roller assembly. The pressure roller moves up and down according to the thickness of the glass plate. A displacement sensor collects the displacement data of the pressure roller in real time, reflecting the change in glass thickness. The displacement sensor converts the displacement data into a thickness signal for the controller. This device automatically detects the glass thickness, avoids the error of manual measurement, and improves production efficiency and product quality.

[0020] The drive component drives two limiting components to adjust the spacing between them, so that the spacing between the two limiting components can be adapted to glass plates of different widths, thereby clamping and limiting the glass plates, reducing possible deviation of the glass plates during transportation, and improving the accuracy of thickness detection. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the present invention.

[0023] Figure 3 This is a schematic diagram of the overall structure of the pressure roller assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the drive component of this utility model;

[0026] Figure 6 This is a schematic diagram of the overall structure of the limiting component of this utility model.

[0027] In the diagram: 10. Support platform; 11. Idler roller; 12. Conveyor belt; 20. Mounting frame; 21. Support plate one; 22. Support plate two; 30. Pressure roller assembly; 31. Electric push rod; 32. Convex connector; 33. Pressure roller; 34. Displacement sensor; 40. Drive assembly; 41. Driver; 42. Screw; 50. Limiting assembly; 51. Movable frame; 52. Connecting frame; 53. Limiting plate; 54. Rotary drum; 60. Support rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] An automatic glass plate thickness detection device for a coating production line includes a support platform 10 equipped with a roller 11 and a conveyor belt 12, and a controller. The controller adopts an existing PLC control system, such as Siemens S7-1200. The roller 11 is rotatably connected to the inside of the support platform 10. The conveyor belt 12 can be an existing one. The conveyor belt 12 can be turned on or off by its own power supply. The end of the conveyor belt 12 closest to the roller 11 is as close as possible to the roller 11 but does not contact it. The glass plate to be detected is conveyed to the side closest to the roller 11 by the conveyor belt 12.

[0030] like Figure 1 and Figure 2A mounting frame 20 is installed on the upper end of the support platform 10. The mounting frame 20 has pre-set threaded holes so that the mounting frame 20 and the support platform 10 can be installed and fixed by bolts. One side of the top of the mounting frame 20 is a support plate 1 21, and the other side of the top of the mounting frame 20 is a support plate 22. A pressure roller assembly 30 is correspondingly set on the lower side of the support plate 1 21. The thickness of the glass plate is detected by the pressure roller assembly 30. A drive assembly 40 is correspondingly set on the lower side of the support plate 22. Limiting components 50 are connected to both sides of the drive assembly 40. The drive assembly 40 can drive the two limiting components 50 to move away from each other and move closer to each other so as to adapt to glass plates of different widths, clamp and limit the glass plate, reduce the possible deviation of the glass plate during the conveying process, and improve the accuracy of thickness detection.

[0031] Specifically, such as Figure 2 and Figure 3 As shown, the pressure roller assembly 30 includes two electric push rods 31. The electric push rods 31 are fixed to the support plate 21 through their mounting bases. The output ends of the two electric push rods 31 are respectively fixed with convex connecting parts 32. The pressure roller 33 is rotatably connected between the two convex connecting parts 32. When the two electric push rods 31 are started at the same time, they drive their respective convex connecting parts 32 to rise and fall, thereby raising and lowering the pressure roller 33. The simultaneous operation of the two electric push rods 31 can drive the pressure roller 33 to rise and fall for adjustment. Displacement sensors 34 are respectively provided on both sides of the pressure roller 33. The displacement sensors 34 are fixedly installed on the side of the convex connecting parts 32 near the pressure roller 33, and the displacement sensors 34 are connected to the controller (PLC control system) for signal transmission. The displacement sensors 34 can transmit the measured data to the controller.

[0032] Initially, the pressure roller 33 and the support roller 11 are in contact. Before detection, the electric push rod 31 drives the pressure roller 33 to rise. When the end of the glass plate to be detected is conveyed to the bottom of the pressure roller 33, the electric push rod 31 drives the pressure roller 33 to fall, so that the pressure roller 33 contacts the surface of the glass plate (in this state, the surface of the pressure roller 33 only contacts the surface of the glass plate and does not squeeze or fix the surface of the glass plate, thus not affecting the conveying of the glass plate). This is the initial spacing of the pressure roller 33. During the detection process, the glass plate continues to be conveyed. After the glass plate completely leaves the pressure roller 33, the electric push rod 31 drives the pressure roller 33 to fall, and the pressure roller 33 contacts the support roller 11. During this process, due to the different thicknesses, the pressure roller 33 undergoes vertical displacement. This design uses the displacement of the pressure roller 33 caused by the change in the thickness of the glass plate as the source of the measurement signal. The displacement sensor 34 detects the displacement of the pressure roller in real time (resolution 0.001mm) and converts it into a thickness signal, which is transmitted to the PLC controller. After receiving the signal from the displacement sensor 34, the controller calculates the thickness of the glass plate using the following formula:

[0033] H=H0-Δd·cosθ

[0034] in:

[0035] H0: The initial distance between the pressure roller 34 and the support roller 11;

[0036] Δd: The displacement detected by displacement sensor 34;

[0037] θ: The angle between the pressure roller axis and the horizontal plane is 0° by default and will be fixed after calibration.

[0038] In the above, the displacement sensor 34 can be either laser or capacitive to adapt to different production environments and needs. Laser sensors are suitable for applications requiring high precision, while capacitive sensors are suitable for applications with high environmental requirements. However, in most cases, laser sensors are preferred. The high precision of the laser sensor measures the distance between the pressure roller 33 and the glass plate so that when the distance approaches zero (at the moment of contact), a stop signal is triggered and transmitted to the controller to prevent the pressure roller 33 from further squeezing the glass plate. Thus, the controller is electrically connected to the electric push rod 31 to facilitate rapid control of the lifting and lowering of the pressure roller 33. At the same time, another conveyor belt should be set on the outer side of the detection device near the side where the glass plate is conveyed out to transport the glass plate that has been tested.

[0039] Selection of displacement sensor type 34 under different conditions: Laser sensor (such as KEYENCE IL-100): suitable for highly reflective surfaces, but the cost increases by 30%; Capacitive sensor (such as BALLUFF BCS series): strong anti-pollution, but slightly lower accuracy (±0.1mm).

[0040] Depending on the situation, a PT100 temperature sensor can also be embedded inside the pressure roller 33 to compensate for displacement errors caused by thermal expansion in real time.

[0041] Regarding signal processing optimization: Kalman filtering algorithm is used to eliminate vibration interference and improve detection stability; redundant sensors (dual sensor mean filtering) can also be added to reduce the risk of single-point failure.

[0042] like Figure 5 and Figure 6As shown, the drive assembly 40 includes a driver 41 mounted on the lower side of the support plate 22. The driver 41 is a dual-output shaft motor. The driver 41 is specifically mounted and fixed to the support plate 22 through its outer protective shell. The fixing method includes, but is not limited to, bolt fixing. The output shafts on both sides of the driver 41 are respectively connected to screws 42. The specific connection method can adopt existing technology. The threads on the surfaces of the two screws 42 are opposite in direction, and the end of each screw 42 away from the driver 41 is rotatably connected to the corresponding mounting frame 20. The limiting assembly 50 includes a movable frame 51 threadedly connected to the screws 42. The lower side of the movable frame 51 is fixed with a limiting plate 53 through a connecting frame 52. The two limiting plates are connected to the support plate 22. Several rotating drums 54 are evenly arranged on opposite sides of plate 53. After the driver 41 is started, it drives two screws 42 to rotate simultaneously, thereby causing the two limiting components 50 to move closer or further apart. The distance between the two limiting components 50 is adjusted to match the width of the glass plate to be tested. The position of the glass plate is constrained by the two limiting plates 53 to reduce the tilt of the glass plate during the conveying process. If the glass plate is tilted when it is conveyed to the pressure roller 33, the pressure roller 33 is prone to uneven force on both sides when it contacts the glass plate. As a result, the displacement sensors 34 on both sides of the pressure roller 33 are prone to errors in the thickness detection, which affects the accuracy of the detection results.

[0043] Furthermore, the surfaces of the pressure roller 33 and the idler roller 11 are provided with an anti-slip coating to enhance friction and ensure the stable passage of the glass plate. The anti-slip coating can be a tungsten carbide (WC) coating with a thickness of 20μm, which can increase the coefficient of friction to 0.8 and prevent the glass plate from slipping. The pressure roller 33 and the idler roller 11 are made of high-hardness alloy steel with a hardness ≥HRC60.

[0044] Furthermore, such as Figure 3 and Figure 4 As shown, the pressure roller assembly 30 has 23 on both sides, and the convex connector 32 has several 321 evenly rotatably arranged on both sides. The 321 contacts the 23 at the corresponding position, making the lifting process of the convex connector 32 more stable and reducing the shaking of the pressure roller 33 during the lifting process.

[0045] Furthermore, the screw 42 is provided with support rods 60 fixed in the mounting frame 20 on both sides. The support rods 60 pass through both sides of the movable frame 51 and are not fixed. The support rods 60 limit the movement of the limiting component 50 and provide further support, thereby ensuring that the screw 42 can stably drive the limiting component 50 to move as a whole during rotation.

[0046] Working principle: First, the drive component 40 drives two limiting components 50 to adapt to the width of the glass plate to be detected, thereby limiting and constraining the glass plate. When the glass plate thickness is 2-10mm and enters between the pressure roller 33 and the support roller 11, the pressure roller 33 contacts the glass plate and moves up and down according to the thickness of the glass plate. The displacement sensor 34 collects the displacement data of the pressure roller 33 in real time, reflecting the change in glass thickness. The displacement sensor 34 converts the displacement data into a thickness signal for the controller. This device automatically detects the glass thickness, avoids the error of manual measurement, and improves production efficiency and product quality.

[0047] Improve production efficiency: Automatic detection of glass thickness reduces manual measurement time, increasing production efficiency by approximately 90%;

[0048] Improved measurement accuracy: With precise displacement sensors, the detection accuracy can reach ±0.05mm, ensuring consistent product quality.

[0049] The details are shown in the table below:

[0050] index Traditional manual inspection Invention Solution Detection efficiency 3-5 minutes / time Real-time detection (zero latency) Thickness measurement accuracy ±0.1mm ±0.05mm Coating thickness uniformity CV value > 8% CV value < 3% Improved overall production line efficiency - 90％

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of automatic detection device of glass plate thickness in coating production line, including the support table (10) of installation with carrier roller (11) and conveyer belt (12) and controller, it is characterized in that, Also include: The upper end of the support table (10) is provided with a mounting frame (20), one side of the top of the mounting frame (20) is a support plate (21), the other side of the top of the mounting frame (20) is a support plate (22), the lower side of the support plate (21) is provided with a compression roller assembly (30) correspondingly, the thickness of the glass plate is detected, the lower side of the support plate (22) is provided with a driving assembly (40) correspondingly, the two sides of the driving assembly (40) are drivenly connected with limit assemblies (50) which can move away from or close to each other, and the glass plate is limited and constrained.

2. The apparatus according to claim 1, wherein the apparatus is characterized by: The compression roller assembly (30) further comprises two electric push rods (31), the electric push rods (31) are fixedly installed on the support plate (21) through their mounting seats, the output ends of the two electric push rods (31) are fixedly provided with convex connectors (32) respectively, a compression roller (33) is rotatably connected between the two convex connectors (32), displacement sensors (34) are arranged on the two sides of the compression roller (33) respectively, the displacement sensors (34) are fixedly installed on one side of the convex connector (32) close to the compression roller (33), the displacement sensors (34) are signal-connected with a controller, and the thickness is detected through the lifting displacement difference of the compression roller (33).

3. The apparatus according to claim 1, wherein the apparatus further comprises a glass plate thickness detection device. The driving assembly (40) further comprises a driver (41) installed on the lower side of the support plate (22), the driver (41) is fixedly installed on the support plate (22) through the protective shell on the outer side of the driver (41), the output shafts on the two sides of the driver (41) are connected with screw rods (42) respectively, the screw thread directions on the surfaces of the two screw rods (42) are opposite, one end of each screw rod (42) away from the driver (41) is rotatably connected with the mounting frame (20) at the corresponding position, and the two screw rods (42) are driven to rotate simultaneously by the driver (41).

4. The apparatus according to claim 3, wherein the apparatus further comprises a glass plate thickness detection device. The limit assembly (50) further comprises a movable frame (51) threadedly connected with the screw rod (42), the lower side of the movable frame (51) is fixedly provided with limit plates (53) through connecting frames (52), and a plurality of rotating cylinders (54) are uniformly and rotatably arranged on the opposite sides of the two limit plates (53).

5. The apparatus according to claim 1, wherein the apparatus is characterized by: The surfaces of the compression roller (33) and the supporting roller (11) are provided with anti-skid coatings, and the thickness of the anti-skid coatings is 20μm.

6. The apparatus according to claim 2, wherein the apparatus further comprises a glass plate thickness detection device. The two sides of the compression roller assembly (30) are respectively provided with (23), the two sides of the convex connector (32) are respectively and uniformly rotatably provided with a plurality of (321), and the (321) is in contact with the (23) at the corresponding position.

7. The apparatus according to claim 3, wherein the apparatus further comprises a glass plate thickness detection device. The two sides of the screw rod (42) are respectively provided with support rods (60) fixedly installed in the mounting frame (20), the support rods (60) penetrate through the two sides of the movable frame (51), and the movement of the limit assembly (50) is limited and supported.

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