A real-time monitoring device for the thickness of color-coated aluminum coils

Abstract

This invention relates to the field of measurement equipment technology for color-coated coils, specifically to a real-time thickness monitoring device for color-coated aluminum coils. Addressing the problem of measurement errors caused by surface contaminants on aluminum coils in laser thickness gauges, this device incorporates multiple distributed laser thickness measurement units and integrates an automatic cleaning device upstream. The cleaning device includes a rotatable cleaning mechanism with multiple cleaning brush rollers. Rotation switches between a working position, a pre-cleaning position, and a deep self-cleaning position. The working position brush rollers clean the aluminum coil surface; the pre-cleaning position removes impurities through negative pressure adsorption; and the deep self-cleaning position uses counter-rotating cleaning brushes in a flowing cleaning solution for deep cleaning. An adaptive floating blade is also included to remove stubborn debris and prevent damage to the coating. This invention achieves automatic cleaning without stopping the machine, effectively ensuring the accuracy of laser thickness measurement and production continuity.

Description

Technical Field

[0001] This invention relates to the field of measurement equipment technology for color-coated coils, and specifically to a real-time thickness monitoring device for color-coated aluminum coils. Background Technology

[0002] The information disclosed in the background section of this invention is intended only to enhance the understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] Laser thickness gauges are used in the production of color-coated aluminum coils to calculate thickness by emitting a laser beam onto the surface of the coil and utilizing the geometric relationship of the reflected beam. However, in actual production, the surface of the aluminum coil is often contaminated with pollutants, including a mixture of dust and oil from the production line environment and uncured paint particles splashed during the coating process. These contaminants can cause changes in laser reflectivity, beam scattering, or the formation of false thickness layers, increasing measurement errors.

[0004] Existing technologies have made corresponding improvements to address the above problems, such as installing a blowing device and a brush in the production line. However, the blowing device cannot clean up debris such as uncured paint particles, and the brush bristles are prone to getting stuck with impurities after long-term use, which affects the cleaning effect of the brush and is not conducive to the continuous real-time monitoring of the coating. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide a real-time thickness monitoring device for color-coated aluminum coils. This device addresses the technical challenge of reduced measurement accuracy of laser thickness gauges during continuous production of color-coated aluminum coils due to contaminants such as dust, oil, and uncured coating particles adhering to the surface. The invention ensures the accuracy of laser thickness measurement without damaging the coating.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A real-time thickness monitoring device for color-coated aluminum coils includes a support, into which the color-coated aluminum coils are conveyed via a conveying device.

[0008] The top of the support is equipped with a cleaning device and multiple distributed laser thickness measurement units.

[0009] The cleaning device includes a housing, and a rotary mounting cavity is provided inside the housing. A rotatable cleaning mechanism is installed inside the rotary mounting cavity.

[0010] The bottom of the rotary mounting cavity is provided with a cleaning port, and negative pressure dust collection chamber and deep self-cleaning chamber are respectively provided on both sides. The negative pressure dust collection chamber and the deep self-cleaning chamber are connected to the rotary mounting cavity through negative pressure adsorption port and self-cleaning port, respectively.

[0011] The cleaning mechanism includes a rotating frame rotatably installed in a rotary mounting cavity. The rotating frame is driven to rotate by a first power device. Three or more cleaning brush rollers are rotatably installed on the rotating frame in a distributed manner. At least two of the cleaning brush rollers are located simultaneously at the cleaning port and the self-cleaning port of the deep self-cleaning chamber, respectively, while keeping the negative pressure adsorption port of the negative pressure dust collection chamber unobstructed. A mounting rod is provided at the center of the rotating frame, and a second power device for driving the cleaning brush rollers to rotate is installed and fixed on the mounting rod.

[0012] The negative pressure dust collection chamber is equipped with a negative pressure connector that communicates with the negative pressure dust collection device. A cleaning brush for deep cleaning of the cleaning brush roller at the self-cleaning port is rotatably installed at the top of the deep self-cleaning chamber. A cleaning fluid that is dynamically adjusted online is provided at the bottom so that the cleaning fluid always keeps in contact with the cleaning brush. The cleaning brush is driven to rotate by a third power device.

[0013] The cleaning port is equipped with an adaptive floating blade that elastically floats on the surface of the color-coated aluminum coil, used to clean stubborn debris adhering to the surface of the color-coated aluminum coil and to cooperate with the transition cleaning brush roller to clean debris.

[0014] Preferably, the side of the adaptive floating blade that cooperates with the corresponding cleaning brush roller is set as an inclined surface to facilitate the transition of debris, and the adaptive floating blade is installed on the end face of the cleaning port near the negative pressure dust collection chamber.

[0015] The cleaning port end face is provided with a telescopic hole, and the adaptive floating knife is provided with a telescopic end that is fitted into the telescopic hole for limiting. The telescopic end is also provided with a spring for generating elastic force.

[0016] Preferably, the side wall of the telescopic hole is provided with a limiting groove, and the telescopic end is provided with a limiting slider that fits into the limiting groove.

[0017] Preferably, the top of the adaptive floating blade is provided with an extension plate that slides in conjunction with the inner wall of the rotary mounting cavity, which is used to cover the gap between the adaptive floating blade and the corresponding cleaning port end face caused by its elasticity, and to prevent the cleaned debris from falling into the dead corner of the gap.

[0018] Preferably, a liquid level sensor for monitoring the level of the cleaning liquid is provided inside the deep self-cleaning chamber;

[0019] The deep self-cleaning chamber is also provided with an inlet and an outlet to maintain the dynamic flow of cleaning fluid within the deep self-cleaning chamber; both the inlet and outlet are equipped with electromagnetic control valves.

[0020] Preferably, the cleaning brush includes several main rods disposed on the rotating body, and several flexible cleaning fins are disposed on the side walls of each main rod.

[0021] Preferably, when the cleaning brush roller performs deep self-cleaning at the self-cleaning port, its rotation direction is opposite to that of the cleaning brush.

[0022] Preferably, the rotary mounting cavity is composed of two sealed parts: a dust collection side cavity cover and a deep cleaning measuring cavity cover.

[0023] The present invention has at least the following beneficial effects:

[0024] This invention utilizes a multi-stage linkage cleaning system, including a cleaning brush roller, an adaptive floating blade, negative pressure adsorption, and deep self-cleaning, to efficiently clean the surface of the color-coated aluminum coil before measurement. This ensures that the laser beam acts on the actual coating surface, eliminates contamination interference, and improves measurement accuracy.

[0025] This invention employs a multi-brush roller rotation mechanism, including working position, pre-cleaning position, and deep self-cleaning position, to achieve closed-loop management of simultaneous cleaning and standby during operation. This ensures that the brushes involved in cleaning are always in optimal condition, preventing performance degradation and avoiding the accumulation of impurities in traditional brushes after long-term use, which could become a secondary source of pollution or reduce cleaning efficiency.

[0026] Meanwhile, by rotating the frame to drive multiple cleaning brush rollers to switch positions, the brushes can be replaced and cleaned without stopping the production line. This enables dynamic switching of cleaning brush rollers and maintenance without stopping the machine, greatly improving the accuracy of thickness detection and production efficiency of color-coated aluminum coils. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the cleaning device;

[0029] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0030] Figure 4 This is a schematic diagram of the cleaning brush.

[0031] The attached figures are labeled as follows:

[0032] 100. Support; 200. Cleaning device; 201. Dust collection side chamber cover; 202. Deep cleaning measuring chamber cover; 203. Rotary mounting chamber; 204. Deep self-cleaning chamber; 2041. Liquid inlet; 2042. Liquid outlet; 2043. Liquid level sensor; 205. Negative pressure dust collection chamber; 2051. Negative pressure adsorption port; 2052. Negative pressure connector; 206. Cleaning port; 207. Adaptive floating blade; 2071. Telescopic hole; 2072. 2073. Inclined surface; 2074. Telescopic end; 2075. Spring; 2076. Limiting slot; 20777. Extension plate; 300. Laser thickness measuring unit; 210. Rotating frame; 211. Mounting rod; 212. First power unit; 220. Cleaning brush roller; 230. Cleaning brush; 2301. Main rod; 2302. Cleaning fins; 2303. Rotating main body; 2304. Third power unit; 310. Rear mounting frame; 400. Color-coated aluminum coil. Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0034] Figures 1 to 4 A real-time thickness monitoring device for color-coated aluminum coils is presented, including a support 100, into which a color-coated aluminum coil 400 is conveyed via a conveying device; a cleaning device 200 and multiple distributed laser thickness measuring units 300 are fixedly installed on the top of the support 100, and the laser thickness measuring units 300 can be small laser thickness gauges, which are distributed and installed on the rear mounting frame 310.

[0035] The cleaning device 200 includes a housing, within which a rotary mounting cavity 203 is provided. A rotatable cleaning mechanism is installed within the rotary mounting cavity 203. A cleaning port 206 is provided at the bottom of the rotary mounting cavity 203, and a negative pressure dust collection chamber 205 and a deep self-cleaning chamber 204 are respectively provided on both sides. The negative pressure dust collection chamber 205 and the deep self-cleaning chamber 204 communicate with the rotary mounting cavity 203 through a negative pressure adsorption port 2051 and a self-cleaning port, respectively. For ease of disassembly, assembly, and maintenance, the rotary mounting cavity 203 is formed by a dust collection side chamber cover 201 and a deep cleaning side chamber cover 202, which are sealed together.

[0036] The cleaning mechanism includes a rotating frame 210 rotatably mounted in a rotating mounting cavity 203. The rotating frame 210 is driven to rotate by a first power device 212. Three or more cleaning brush rollers 220, including a first cleaning brush roller, a second cleaning brush roller, and a third cleaning brush roller, are rotatably mounted on the rotating frame 210 in a distributed manner. At least two of the cleaning brush rollers 220 are simultaneously located at the cleaning port 206 and the self-cleaning port of the depth self-cleaning cavity 204, respectively, while keeping the negative pressure adsorption port 2051 of the negative pressure dust collection cavity 205 unobstructed. A mounting rod 211 is provided at the center of the rotating frame 210. A second power device (not shown in the figure) for driving the cleaning brush rollers 220 to rotate is installed and fixed on the mounting rod 211. The specific installation method can be achieved by combining a mounting clip with a fiber pin, etc. It is easy to implement by simply installing the second power device stably on the mounting rod 211 and connecting its output end to the corresponding cleaning brush roller 220. Those skilled in the art should understand this, and it will not be described in detail here.

[0037] The purpose of rotating the rotating frame 210 is to enable the cleaning brush roller 220 to automatically switch without stopping the machine, that is, to switch the cleaning brush roller 220 at the cleaning port 206 and the self-cleaning port, so as to ensure that the cleaning ability of the cleaning brush roller 220 is always maintained at the highest level, thereby ensuring the accuracy of real-time monitoring of the thickness of the color-coated aluminum coil 400.

[0038] The following is a specific example to illustrate this. For instance, the first cleaning brush roller is located inside the cleaning port 206 and serves as the working cleaning roller. The second cleaning brush roller is located above the negative pressure adsorption port 2051 and serves as the pre-cleaning cleaning roller. The third cleaning brush roller is located at the self-cleaning port and serves as the self-cleaning cleaning roller. After the third cleaning brush roller has completed self-cleaning, it serves as a spare cleaning roller and is always ready to replace the working cleaning roller.

[0039] Thus, the first cleaning roller in the working position rotates to clean the color-coated aluminum coil 400; the second cleaning brush roller in the pre-cleaning position rotates to fling out the debris hidden inside the brush, which is then sucked out through the negative pressure suction port 2051, achieving preliminary self-cleaning; when the third cleaning brush roller in the self-cleaning position performs deep self-cleaning at the self-cleaning port, it rotates in the opposite direction to the rotation direction of the cleaning brush 230. It then uses the adhering cleaning fluid to perform deep cleaning on the third cleaning brush roller.

[0040] Meanwhile, a liquid level sensor 2043 for monitoring the liquid level of the cleaning fluid is installed inside the deep self-cleaning chamber 204; the deep self-cleaning chamber 204 is also provided with an inlet 2041 and an outlet 2042 to maintain the dynamic flow of the cleaning fluid in the deep self-cleaning chamber 204, on the one hand maintaining the cleaning ability of the cleaning fluid, and on the other hand ensuring that the height of the cleaning fluid level is always adapted to the operation of the cleaning brush 230; both the inlet 2041 and the outlet 2042 are equipped with electromagnetic control valves, laying the foundation for automated intelligent control.

[0041] To ensure the cleaning ability of the cleaning brush 230, its structure is as follows: it includes several main rods 2301 set on the rotating body 2303 as the main force base. Several flexible cleaning fins 2302 or burrs are provided on the side wall of each main rod 2301, which facilitates the adhesion of cleaning liquid and the scraping off of stubborn debris trapped in the cleaning brush roller 220.

[0042] The negative pressure dust collection chamber 205 is provided with a negative pressure connector 2052 that communicates with the negative pressure dust collection device. The top of the deep self-cleaning chamber 204 is rotatably mounted with a cleaning brush 230 for deep cleaning of the cleaning brush roller 220 at the self-cleaning port. The bottom is provided with online dynamically adjusted cleaning fluid so that the cleaning fluid always keeps in contact with the cleaning brush 230. The cleaning brush 230 is driven to rotate by a third power device 2304.

[0043] The cleaning port 206 is equipped with an adaptive floating blade 207 that floats elastically on the surface of the color-coated aluminum coil 400. This blade is used to clean stubborn debris adhering to the surface of the color-coated aluminum coil 400 and to clean debris that is cleaned by the transition cleaning brush roller 220. At the same time, it avoids damage to the coating of the color-coated aluminum coil 400 by rigid contact cleaning.

[0044] The adaptive floating blade 207 has a beveled surface 2072 on one side that cooperates with the corresponding cleaning brush roller 220 to facilitate the passage of debris. The adaptive floating blade 207 is installed on the end face of the cleaning port 206 near the negative pressure dust collection chamber 205. The end face of the cleaning port 206 is provided with a telescopic hole 2071. The adaptive floating blade 207 is provided with a telescopic end 2073 that is fitted and limited within the telescopic hole 2071. The telescopic end 2073 is also provided with a spring 2074 for generating elastic force.

[0045] The specific structure of the limiting assembly is as follows: the side wall of the telescopic hole 2071 is provided with a limiting slot 2075, and the telescopic end 2073 is provided with a limiting slider that fits into the limiting slot 2075.

[0046] Meanwhile, the top of the adaptive floating blade 207 is provided with an extension plate 2076 that slides with the inner wall of the rotary mounting cavity 203. This plate is used to cover the gap between the adaptive floating blade 207 and the end face of the corresponding cleaning port 206 caused by its elasticity, preventing the cleaned debris from falling into the dead corner of the gap.

[0047] In summary, this device is a real-time thickness monitoring device for color-coated aluminum coils that integrates efficient cleaning, automatic switching, deep self-cleaning, flexible protection, and intelligent control. It fundamentally ensures the accuracy and stability of the laser thickness measurement process and can meet the stringent requirements of online quality monitoring in the production of high-end color-coated aluminum materials.

[0048] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A real-time thickness monitoring device for color-coated aluminum coils, comprising a support, wherein the color-coated aluminum coil is conveyed into the support via a conveying device; characterized in that: The top of the support is equipped with a cleaning device and multiple distributed laser thickness measurement units. The cleaning device includes a housing, and a rotary mounting cavity is provided inside the housing. A rotatable cleaning mechanism is installed inside the rotary mounting cavity. The bottom of the rotary mounting cavity is provided with a cleaning port, and negative pressure dust collection chamber and deep self-cleaning chamber are respectively provided on both sides. The negative pressure dust collection chamber and the deep self-cleaning chamber are connected to the rotary mounting cavity through negative pressure adsorption port and self-cleaning port, respectively. The cleaning mechanism includes a rotating frame rotatably installed in a rotary mounting cavity. The rotating frame is driven to rotate by a first power device. Three or more cleaning brush rollers are rotatably installed on the rotating frame in a distributed manner. At least two of the cleaning brush rollers are located simultaneously at the cleaning port and the self-cleaning port of the deep self-cleaning chamber, respectively, while keeping the negative pressure adsorption port of the negative pressure dust collection chamber unobstructed. A mounting rod is provided at the center of the rotating frame, and a second power device for driving the cleaning brush rollers to rotate is installed and fixed on the mounting rod. The negative pressure dust collection chamber is equipped with a negative pressure connector that communicates with the negative pressure dust collection device. A cleaning brush for deep cleaning of the cleaning brush roller at the self-cleaning port is rotatably installed at the top of the deep self-cleaning chamber. A cleaning fluid that is dynamically adjusted online is provided at the bottom so that the cleaning fluid always keeps in contact with the cleaning brush. The cleaning brush is driven to rotate by a third power device. The cleaning port is equipped with an adaptive floating blade that floats elastically on the surface of the color-coated aluminum coil, used to clean stubborn debris adhering to the surface of the color-coated aluminum coil and to cooperate with the transition cleaning brush roller to clean debris. The side of the adaptive floating blade that mates with the corresponding cleaning brush roller is set as an inclined surface to facilitate the transition of debris. The adaptive floating blade is installed on the end face of the cleaning port near the negative pressure dust collection chamber. The cleaning port end face is provided with a telescopic hole, and the adaptive floating knife is provided with a telescopic end that is fitted and limited in the telescopic hole. The telescopic end is also provided with a spring for generating elastic force. The telescopic hole has a limit slot on its side wall, and the telescopic end is provided with a limit slider that fits into the limit slot. The adaptive floating blade is provided with an extension plate at its top that slides in conjunction with the inner wall of the rotary mounting cavity. This plate covers the gap between the adaptive floating blade and the corresponding cleaning port end face caused by its elasticity, preventing debris from falling into the dead corner of the gap.

2. The real-time thickness monitoring device for color-coated aluminum coils as described in claim 1, characterized in that: The deep self-cleaning chamber is equipped with a liquid level sensor for monitoring the liquid level of the cleaning fluid. The deep self-cleaning chamber is also provided with an inlet and an outlet to maintain the dynamic flow of cleaning fluid within the deep self-cleaning chamber; both the inlet and outlet are equipped with electromagnetic control valves.

3. The real-time thickness monitoring device for color-coated aluminum coils as described in claim 1, characterized in that: The cleaning brush includes several main rods mounted on a rotating body, and each main rod has several flexible cleaning fins on its side wall.

4. The real-time thickness monitoring device for color-coated aluminum coils as described in claim 3, characterized in that: When the cleaning brush roller performs deep self-cleaning at the self-cleaning port, its rotation direction is opposite to that of the cleaning brush.

5. The real-time thickness monitoring device for color-coated aluminum coils as described in any one of claims 1 to 4, characterized in that: The rotary mounting cavity is composed of two sealed parts: a dust collection side cavity cover and a deep cleaning measuring cavity cover.

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