Accurate color mixing device and color mixing method for environment-friendly water-based paint production

Abstract

The invention discloses an accurate color matching device and method for environment-friendly water paint production, and belongs to the technical field of water paint color matching devices. Comprising a lifting base, a mixing cylinder and an embedded cylindrical shell, an interval exists between the bottom end of the embedded cylindrical shell and the bottom face of the mixing cylinder, and an upper group and a lower group of second ultrasonic detection probes which are sequentially arranged according to the circumference are fixedly installed in an interlayer cavity of the embedded cylindrical shell and the mixing cylinder; an upper group of ultrasonic detection probes and a lower group of ultrasonic detection probes which are distributed in a staggered manner are arranged in an interlayer cavity formed by a mixing cylinder and an embedded cylindrical shell, a three-dimensional concentration field is reconstructed by adopting differential frequency configuration and an acoustic waveguide effect, and different from a traditional vertical monitoring blind area which is arranged in a single layer, the sweeping actions of stirring blades and the probes are dynamically synchronous; a reflection coating and a trigger mechanism are utilized to ensure that the sound wave emission opportunity is accurately matched with a stirring gap, blade shielding is avoided, and the optimal detection angle of the mixed transient state is captured.

Description

Technical Field

[0001] The present invention relates to the technical field of water-based paint color matching devices, and more specifically, to an accurate color matching device and a color matching method for the production of environmentally friendly water-based paints. Background Art

[0002] As a green coating material, during the production process of environmentally friendly water-based paints, it is necessary to accurately mix resin-based materials with a variety of pigments to achieve the target chromaticity. In the prior art, an accurate color matching device sets a stirring mechanism in a mixing cylinder and uses an ultrasonic standing wave generator to monitor the material uniformity in real time to ensure the pigment dispersion and color consistency. High-frequency sound waves are emitted by probes arranged outside the tank, and the internal concentration distribution is inversely calculated based on the characteristics of sound wave attenuation and reflection, so as to dynamically adjust the stirring parameters.

[0003] However, traditional non-invasive monitoring solutions have significant limitations in practical applications. That is, when the stirring paddle periodically passes through the area corresponding to the ultrasonic probe, its metal structure will block the sound wave propagation path, resulting in tomographic missing in tomography. The prior art usually increases the number of probes or raises the sampling frequency to compensate for the missing data. However, limited by the installation space and cost of the tank body, it is difficult to completely eliminate signal interference. In addition, the cured paint residues on the surface of the stirring shaft will also reflect abnormal sound waves, further reducing the detection accuracy. Traditional improvement measures such as adding a scraping mechanism or optimizing the probe layout have little effect because they damage the integrity of the non-invasive structure or increase the complexity of the equipment.

[0004] It can be known from the reasons that the core contradiction of the existing solution lies in the dynamic interference between the monitoring system and the stirring mechanism. On the one hand, the fixed external probe cannot avoid the periodic occlusion of the stirring paddle, resulting in the lack of real-time data in the key mixing area. On the other hand, the residues on the rotating body at the axis of the mixing cylinder will form acoustic artifacts, distorting the detection signal, making it impossible to achieve both color matching accuracy and production efficiency. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an accurate color matching device and a color matching method for the production of environmentally friendly water-based paints, aiming to solve the above technical problems.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An accurate color matching device for the production of environmentally friendly water-based paints includes a lifting base. A mixing cylinder is fixedly installed on the top of the lifting base. An inner embedded cylindrical shell is fixedly connected to the inner wall of the mixing cylinder. The inner embedded cylindrical shell and the mixing cylinder as a whole form a structure with an interlayer cavity on the side wall, and there is a gap between the bottom end of the inner embedded cylindrical shell and the bottom surface of the mixing cylinder. Two groups of several second ultrasonic detection probes arranged in a circular pattern in sequence are fixedly installed in the interlayer cavity between the inner embedded cylindrical shell and the mixing cylinder. The bottom surface of the mixing cylinder is movably provided with a multi-axis end linkage mechanism, the multi-axis end linkage mechanism includes a chassis, the side of the chassis is sealed and clamped in the interval at the bottom of the embedded cylindrical shell, and a reciprocating scraping module is arranged at the center position of the upper surface of the chassis, the reciprocating scraping module includes an axial cavity rod, the outer rod surface of the axial cavity rod is provided with a reflective coating corresponding to the second ultrasonic detection probe, and the outer top position of the axial cavity rod is fixedly connected with a plurality of stirring blades in a circle in sequence; Among them, a servo motor for driving the rotation of the axial cavity rod is configured at the top of the mixing barrel. The output end of the servo motor controls the axial cavity rod to rotate 360 ​​degrees, so as to drive the stirring blades to reciprocately scan the second ultrasonic detection probe through the embedded cylindrical shell, and when the stirring blades on each side scan the second ultrasonic detection probe, ultrasonic waves are triggered to be emitted toward the axial cavity rod to complete unobstructed detection.

[0008] As a further solution of the present invention: a concave ring cavity is provided at the bottom of the interlayer cavity between the embedded cylindrical shell and the mixing cylinder, a gear ring is fixedly installed inside the concave ring cavity, a notch limit sleeve is provided at the center position of the inner bottom circle of the mixing cylinder, the multi-axis end linkage mechanism includes a fitting disk movably installed in the notch limit sleeve, the chassis is fixedly installed on the upper side of the fitting disk, a sealing sleeve is fixedly installed at the side position of the upper surface of the chassis in the sealing annular groove at the bottom of the embedded cylindrical shell, a horizontal cavity passing through the center of the circle is provided inside the chassis, the horizontal cavity completely penetrates the chassis, and a fitting rod is movably installed at the midpoint of the horizontal cavity.

[0009] As a further solution of the present invention: both sides of the sleeve rod are fixedly connected with a bidirectional threaded rod, and the bidirectional threaded rod on each side passes through the side of the chassis through the horizontal cavity, and a first gear head is also fixedly installed at the end point position of the extended end of the bidirectional threaded rod on one side, and the first gear head is placed as a whole in the concave ring cavity and meshes with the gear ring.

[0010] As a further solution of the present invention: the multi-axis end linkage mechanism also includes an isolation cavity fixedly mounted on the upper surface of the chassis, and the isolation cavity as a whole is a rectangular cavity structure that expands to both sides with the center of the chassis as the midpoint, and the expanded ends on both sides are connected to the inner annular surface of the sealing annular groove, and limiting grooves facing the bidirectional threaded rod are opened at both sides of the inner bottom of the isolation cavity, and nut sleeves that engage with the bidirectional threaded rod on the same side are slidably mounted on the limiting grooves, and a first ultrasonic detection probe is fixedly mounted on the upper surface of each nut sleeve, and coupling coatings corresponding to the output end of the first ultrasonic detection probe are arranged on both sides of the inner top of the isolation cavity.

[0011] As a further solution of the present invention: Corresponding coupling coatings are arranged at positions on the side walls of the embedded cylindrical shell that are in close contact with the output ends of the second ultrasonic detection probes. A pigment injection pipe leading to the inside of the mixing cylinder is fixedly installed on the upper side of the side wall of the mixing cylinder, and an aqueous paint discharge pipe is fixedly installed on the lower side of the side wall of the mixing cylinder. Electric control valves are arranged on both the pigment injection pipe and the aqueous paint discharge pipe. The axial cavity rod is fixedly installed at the midpoint position of the upper surface of the isolation cavity, and the inner cavity of the axial cavity rod communicates with the isolation cavity.

[0012] As a further solution of the present invention: The reciprocating scraping module further includes a threaded rod movably installed at the center position inside the axial cavity rod. The bottom of the threaded rod extends into the isolation cavity, and a second gear head is fixedly installed on one side extending into the isolation cavity. A direction detecting toothed plate is fixedly installed on the side of the second ultrasonic detection probe on one side inside the isolation cavity, and the direction detecting toothed plate is meshed with the side of the second gear head correspondingly.

[0013] As a further solution of the present invention: Grooves are formed on the inner side wall of the axial cavity rod, and a magnetic attraction nut sleeve ring meshed with the threaded rod is slidably installed through the grooves. A magnetic attraction coating is arranged on the outer edge surface of the magnetic attraction nut sleeve ring, and a magnetic attraction nut scraping ring is movably sleeved on the outer surface of the axial cavity rod. A magnetic attraction coating corresponding to the adsorption of the magnetic attraction nut sleeve ring is arranged on the inner circular ring surface of the magnetic attraction nut scraping ring.

[0014] As a further solution of the present invention: A linkage air guiding module is further arranged at the inner top of the mixing cylinder. The linkage air guiding module includes an extension rod fixedly installed at the top of the axial cavity rod. An isolation cylinder is fixedly installed on the upper side of the extension rod. The outer side of the isolation cylinder is in close contact with the inner wall of the embedded cylindrical shell. A plurality of ventilation round openings are formed at the bottom of the isolation cylinder. A fan group is fixedly installed inside the isolation cylinder. A servo motor is fixedly installed at the top of the mixing cylinder through a bracket, and the output end of the servo motor is fixedly connected to the axis at the top of the isolation cylinder.

[0015] As a further solution of the present invention: The stirring blades are integrally of an L-shaped cavity structure, and a magnetoresistive induction module is fixedly installed in the inner cavity of each stirring blade, and the outer side surface of each stirring blade is in close contact with the inner wall of the embedded cylindrical shell.

[0016] A color matching method for an environmentally friendly aqueous paint production precise color matching device includes the following steps: S1: First, inject aqueous paint base materials and pigments into the embedded cylindrical shell through the pigment injection pipe. Start the servo motor to drive the axial cavity rod to rotate, drive the stirring blades to stir the mixed liquid. At the same time, through the linkage of the chassis and the sleeved disc by the axial cavity rod, the multi-axis end linkage mechanism rotates around the axis of the mixing cylinder as a whole to ensure that the stirring blades move closely against the inner wall of the embedded cylindrical shell. S2: Then, when the stirring blade sweeps across the area corresponding to the second ultrasonic detection probe, its built-in magnetoresistive induction module triggers the probe to emit high-frequency ultrasonic waves. After the sound waves penetrate the embedded cylindrical shell, they return through the reflection coating on the surface of the axial cavity rod and are received by the probe to complete the acquisition of three-dimensional concentration field data of the mixed liquid. S3: Then, when the chassis rotates, the first gear head meshes with the gear ring to drive the bidirectional threaded rod to rotate, driving the nut sleeve to reciprocate along the limit notch, enabling the first ultrasonic detection probe to perform bottom scanning in the isolation chamber. At the same time, the direction detection tooth plate meshes with the second gear head to drive the threaded rod to rotate, and through the magnetic coupling of the magnetic nut sleeve ring and the magnetic nut scraping ring, automatic scraping and cleaning of the surface of the axial cavity rod are realized. S4: Finally, the servo motor synchronously drives the isolation cylinder of the linkage air guide module to rotate. The downward airflow generated by the fan group blows the foam on the surface of the mixed liquid through the ventilation round opening. After the mixing is qualified, the electric control valve of the water-based paint discharge pipe is opened to output the finished product, completing the color mixing process.

[0017] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects: (1) In this solution, upper and lower two groups of ultrasonic detection probes arranged in a staggered manner are arranged in the sandwich cavity formed by the mixing cylinder and the embedded cylindrical shell. By adopting differential frequency configuration and acoustic waveguide effect, the reconstruction of the three-dimensional concentration field is realized, which is different from the vertical monitoring blind area of the traditional single-layer layout. The sweeping actions of the stirring blade and the probe are dynamically synchronized, and the reflection coating and triggering mechanism are used to ensure that the sound wave emission timing is precisely matched with the stirring gap, avoiding the occlusion of the blade and capturing the optimal detection angle of the mixing transient.

[0018] (2) The bidirectional threaded rod is driven by gear linkage, enabling the bottom probe to reciprocate and scan in the isolation chamber. Combining the dual-parameter detection of pulse echo flight time and energy integration, the three-dimensional coordinates of the color block agglomeration are accurately identified. When the chassis rotates, the direction detection tooth plate meshes with the gear head to trigger the threaded rod to rotate, driving the magnetic scraping ring to self-clean the detection shaft body, eliminating the interference of residues and effectively distinguishing the true concentration gradient from the acoustic artifacts.

[0019] (3) Through the configured defoaming and mechanical cleaning functions, the environmental adaptability of the detection system is enhanced. The built-in magnetoresistive induction module of the stirring blade triggers the corresponding azimuth probe to work in real time, ensuring that the sound wave emission matches the mixing state. The linkage air guide module drives the centrifugal fan through the axial cavity rod to generate a directional airflow, forming a negative pressure in the stirring area to suppress bubble generation. The magnetic coupling design of the scraping mechanism and the detection shaft body realizes continuous cleaning of the reflection coating during rotation, avoiding the interference of cured paint on the sound wave reflection characteristics, and controlling the color mixing accuracy error better while ensuring the integrity of non-invasive detection. Description of the Drawings

[0020] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0021] Figure 1 is a schematic structural diagram of the overall structure of the present invention; Figure 2 is a schematic structural diagram of the mixing cylinder in a half-sectional view state of the present invention; Figure 3 is a schematic structural diagram of the multi-axis end linkage mechanism in a disassembled state of the present invention; Figure 4 is a schematic structural diagram of the multi-axis end linkage mechanism in a half-sectional view state of the present invention; Figure 5 is Figure 4 an enlarged structural diagram of part A in Figure 6 is Figure 4 an enlarged structural diagram of part B in Figure 7 is a schematic structural diagram of the linkage air guiding module of the present invention; Figure 8 is a schematic structural diagram of the interior of the linkage air guiding module of the present invention.

[0022] Reference numerals 1, lifting base; 2, mixing cylinder; 3, pigment injection pipe; 4, water-based paint discharge pipe; 5, multi-axis end linkage mechanism; 51, fitting disc; 52, chassis; 53, sealing circular groove; 54, horizontal cavity; 55, fitting rod; 56, bidirectional threaded rod; 57, first gear head; 58, limiting notch; 59, nut sleeve; 510, first ultrasonic detection probe; 511, direction detecting tooth plate; 512, isolation cavity; 6, embedded cylindrical shell; 7, concave ring cavity; 8, gear ring; 9, second ultrasonic detection probe; 10, notch limiting sleeve; 11, reciprocating scraping module; 111, axial cavity rod; 112, threaded rod; 113, second gear head; 114, magnetic nut sleeve ring; 115, magnetic nut scraping ring; 12, stirring blade; 13, linkage air guiding module; 131, extension rod; 132, isolation cylinder; 133, fan group; 14, servo motor.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0024] The following is a detailed description of an accurate color mixing device and color mixing method for environmentally friendly water-based paint production provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0025] like Figures 1 to 8 As shown, an embodiment of the present invention provides a precise color mixing device for environmentally friendly water-based paint production, comprising a lifting base 1, a mixing barrel 2 is fixedly installed on the top of the lifting base 1, an embedded cylindrical shell 6 is fixedly connected to the inner wall of the mixing barrel 2, the embedded cylindrical shell 6 and the mixing barrel 2 form a structure in which a sandwich cavity exists on the side wall, and there is a gap between the bottom end of the embedded cylindrical shell 6 and the bottom surface of the mixing barrel 2, and a plurality of second ultrasonic detection probes 9 arranged in sequence in a circle are fixedly installed in the sandwich cavity between the embedded cylindrical shell 6 and the mixing barrel 2; The bottom surface of the mixing barrel 2 is movably provided with a multi-axis end linkage mechanism 5, and the multi-axis end linkage mechanism 5 includes a chassis 52, the side of the chassis 52 is sealed and clamped in the interval at the bottom of the embedded cylindrical shell 6, and a reciprocating scraping module 11 is arranged at the center position of the upper surface of the chassis 52, and the reciprocating scraping module 11 includes an axial cavity rod 111, and a reflective coating corresponding to the second ultrasonic detection probe 9 is arranged on the outer rod surface of the axial cavity rod 111, and a plurality of stirring blades 12 are fixedly connected in a circle at the outer top position of the axial cavity rod 111; Among them, a servo motor 14 for driving the rotation of the axial cavity rod 111 is configured at the top of the mixing barrel 2. The output end of the servo motor 14 controls the axial cavity rod 111 to rotate 360 ​​degrees, so as to drive the stirring blade 12 to reciprocately scan the second ultrasonic detection probe 9 through the embedded cylindrical shell 6, and when the stirring blade 12 on each side scans the second ultrasonic detection probe 9, it triggers the ultrasonic wave to be emitted to the axial cavity rod 111 to complete unobstructed detection.

[0026] In order to solve the problem of the distortion of the mixing state monitoring caused by the periodic shielding of the ultrasonic probe by the stirring paddle and the interference of the acoustic signal by the shaft residue in the existing environmentally friendly water-based paint coloring device, the above technical solution is adopted to solve the problem. The above technical solution mainly consists of a lifting base 1, a mixing barrel 2, a multi-axis end linkage mechanism 5, an embedded cylindrical shell 6, a second ultrasonic detection probe 9, a reciprocating scraping module 11, and a stirring blade 12. The mixing barrel 2 and the embedded cylindrical shell 6 form a structure with a sandwich cavity on the side wall, and the bottom of the embedded cylindrical shell 6 as the inner layer is not sealed and connected to the bottom surface of the mixing barrel 2, but there is a certain gap. In the sandwich cavity between the mixing barrel 2 and the embedded cylindrical shell 6, two groups of upper and lower second ultrasonic detection probes 9 arranged in sequence according to the circumference are fixedly installed. The configured second ultrasonic detection probe 9 is a probe structure that can generate ultrasonic waves in the prior art, and its output end faces the center of the mixing barrel 2 through the embedded cylindrical shell 6. Specifically, the embedded cylindrical shell 6 uses 3mm thick alumina ceramic to reduce the ultrasonic penetration loss. The probes of the upper and lower groups of second ultrasonic detection probes 9 are staggered at a 90-degree angle difference, with a total of 8 probes, forming full-section scanning coverage, eliminating the monitoring blind spots of the traditional single-layer layout, and the upper and lower probe groups have differentiated transmission frequencies, including but not limited to 5MHz for the upper layer and 2.5MHz for the lower layer. Combined with the acoustic waveguide effect formed by the interlayer cavity, three-dimensional concentration field reconstruction with axial resolution and radial resolution is achieved, and its accuracy can be further improved compared with the single-layer layout scheme in the prior art.

[0027] The configured multi-axis end linkage mechanism 5 includes a chassis 52, and is sealed and clamped in the gap at the bottom of the embedded cylindrical shell 6 through the outer edge of the chassis 52. On the one hand, the interior of the embedded cylindrical shell 6 and the interlayer cavity between the mixing barrel 2 and the embedded cylindrical shell 6 are separated by the chassis 52. On the other hand, under the premise of playing a separating role, the chassis 52 can also rotate. A reciprocating scraping module 11 is arranged at the center position of the upper surface of the chassis 52, and the rotation of the chassis 52 drives the reciprocating scraping module 11 to rotate. The reciprocating scraping module 11 comprises an axial cavity rod 111, and a reflective coating corresponding to the second ultrasonic detection probe 9 is arranged on the outer rod surface of the axial cavity rod 111. A plurality of stirring blades 12 are fixedly connected in a circle in sequence at the outer top position of the axial cavity rod 111. The output end of the servo motor 14 controls the axial cavity rod 111 to rotate 360 ​​degrees, so as to drive the stirring blades 12 to reciprocately scan the second ultrasonic detection probe 9 through the embedded cylindrical shell 6, and when the stirring blades 12 on each side scan the second ultrasonic detection probe 9, ultrasonic waves are triggered to be emitted to the axial cavity rod 111 to complete unobstructed detection.

[0028] The reflective coating disposed on the outer rod surface of the axial cavity rod 111 is used to receive ultrasonic waves. It is an industrial titanium nitride and aluminum oxide composite coating in the prior art, which is deposited in sequence using a magnetron sputtering process and has the effects of acoustic reflection and water-based paint corrosion.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a concave ring cavity 7 is provided at the bottom of the interlayer cavity between the embedded cylindrical shell 6 and the mixing cylinder 2, a gear ring 8 is fixedly installed inside the concave ring cavity 7, a recessed limit sleeve 10 is provided at the center position of the inner bottom circle of the mixing cylinder 2, the multi-axis end linkage mechanism 5 includes a fitting disk 51 movably installed in the recessed limit sleeve 10, the chassis 52 is fixedly installed on the upper side of the fitting disk 51, a sealing ring groove 53 of the bottom of the embedded cylindrical shell 6 is fixedly installed at the side position of the upper surface of the chassis 52, a horizontal cavity 54 passing through the center of the circle is provided inside the chassis 52, the horizontal cavity 54 completely penetrates the chassis 52, and a fitting rod 55 is movably installed at the midpoint of the horizontal cavity 54.

[0030] Among them, the concave ring cavity 7 arranged at the bottom of the sandwich cavity between the embedded cylindrical shell 6 and the mixing barrel 2 is used to install the gear ring 8. The chassis 52 can rotate 360 ​​degrees inside the mixing barrel 2 through the movable connection relationship between the fitting disk 51 and the notch limit sleeve 10, and because the side of the chassis 52 is provided with a sealing ring groove 53, it is stuck in the bottom of the embedded cylindrical shell 6, ensuring the sealing between the side and the junction end of the chassis 52 during rotation.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, both sides of the sleeve rod 55 are fixedly connected with a bidirectional threaded rod 56, and the bidirectional threaded rod 56 on each side passes through the horizontal cavity 54 and out of the side of the chassis 52, and a first gear head 57 is also fixedly installed at the end point position of the protruding end of the bidirectional threaded rod 56 on one side, and the first gear head 57 is placed as a whole in the concave ring cavity 7 and meshes with the gear ring 8.

[0032] Among them, the configured sleeve rod 55 is movably installed at the midpoint of the horizontal cavity 54, and the bidirectional threaded rod 56 is fixedly installed on both sides of the sleeve rod 55, and the protruding end of the bidirectional threaded rod 56 on one side is also configured with a first gear head 57 corresponding to the meshing with the gear ring 8. Therefore, during the rotation of the chassis 52, since the gear ring 8 does not rotate, the first gear head 57 on the side of the chassis 52 will rotate under the action of meshing, causing the sleeve rod 55 to rotate as a whole.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the multi-axis end linkage mechanism 5 also includes an isolation cavity 512 fixedly mounted on the upper surface of the chassis 52. The isolation cavity 512 is a rectangular cavity structure that expands to both sides with the center of the chassis 52 as the midpoint, and the expanded ends on both sides are connected to the inner annular surface of the sealing annular groove 53. Limiting grooves 58 facing the bidirectional threaded rod 56 are provided at both sides of the inner bottom of the isolation cavity 512. Nut sleeves 59 that mesh with the bidirectional threaded rod 56 on the same side are slidably mounted on the limiting grooves 58, and a first ultrasonic detection probe 510 is fixedly mounted on the upper surface of each nut sleeve 59. Coupling coatings corresponding to the output end of the first ultrasonic detection probe 510 are arranged on both sides of the inner top of the isolation cavity 512.

[0034] Among them, the configured first ultrasonic detection probe 510 is also a probe structure capable of generating ultrasonic waves in the prior art, and its output end faces the inside of the mixing barrel 2 across the isolation cavity 512. Specifically, there are two detection probes configured at the bottom of the mixing barrel 2, which are different from the second ultrasonic detection probes 9 arranged in a circle on the outside of the mixing barrel 2. It can emit ultrasonic waves from the bottom to the inside of the mixing barrel 2, because in the process of pigment injection and mixing, different color blocks often agglomerate during the mixing process, and the agglomerated color blocks are equivalent to an obstacle block that can weaken the sound wave. In the case of eliminating the obstacle of the stirring blade, the agglomeration of color blocks is one of the core difficulties that lead to the distortion of the mixing uniformity monitoring, which will also affect the accuracy of the three-dimensional concentration field reconstruction and reduce the accuracy of the mixed color adjustment. In order to avoid the situation where the agglomeration of color blocks weakens the sound wave, a group of probes are set from bottom to top to further improve the accuracy of the three-dimensional concentration field reconstruction.

[0035] Specifically, when pigment particles form dense agglomerates due to insufficient dispersion or local flow field stagnation, the acoustic impedance differences between them and the binder, such as titanium dioxide agglomerates and resin binder agglomerates, will significantly change the ultrasonic propagation characteristics. On the one hand, high-frequency sound waves generate abnormal attenuation when penetrating the agglomerates, resulting in a sharp drop in the amplitude of the signal received by the probe. On the other hand, the acoustic wave scattering effect at the edge of the agglomerates causes Doppler frequency shift, distorting the phase information. The traditional single-layer external probe scheme is difficult to capture the concentration gradient changes in the vertical direction because it only relies on the detection data in the horizontal plane, especially when the agglomerates are suspended in the middle and lower parts of the mixing cylinder. Therefore, by adding a first ultrasonic detection probe 510 at the bottom of the sandwich cavity between the embedded cylindrical shell 6 and the mixing cylinder 2, and combining with the high-resolution characteristics of the upper-layer high-frequency probe, a cross-band acoustic perspective is formed. From the structural implementation level, the bidirectional threaded rod 56 arranged in the isolation cavity 512 drives the nut sleeve 59 to move precisely along the limit notch 58, ensuring that the output end of the first ultrasonic detection probe 510 always maintains a gap of 0.1 mm level with the coupling coating, ensuring stable acoustic wave transmission efficiency. In terms of the detection logic, the bottom probe uses a dual-mode detection of pulse echo flight time and energy integration: when the acoustic wave passes through the agglomerate area, the TOF generates a time delay due to the change in the sound speed, and the energy integration value decreases synchronously due to the attenuation effect. By comparing the time and energy correlation curves of the upper and lower layer probe data, the three-dimensional coordinates of the agglomerates can be located in real time.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, corresponding coupling coatings are configured at positions on the side wall of the embedded cylindrical shell 6 that are in close contact with the output end of the second ultrasonic detection probe 9. A pigment injection pipe 3 leading to the inside of the mixing cylinder 2 is fixedly installed on the upper side of the side wall of the mixing cylinder 2, and an aqueous paint discharge pipe 4 is fixedly installed on the lower side of the side wall of the mixing cylinder 2. Electric control valves are configured on both the pigment injection pipe 3 and the aqueous paint discharge pipe 4. The axial cavity rod 111 is fixedly installed at the midpoint position on the upper surface of the isolation cavity 512, and the inner cavity of the axial cavity rod 111 communicates with the isolation cavity 512.

[0037] Among them, the configured pigment injection pipe 3 is a sorting conduit in the prior art, which can be connected to several groups of different pigment conduits to inject different pigments for precise mixing and color matching.

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the reciprocating scraping module 11 further includes a threaded rod 112 movably installed at the center position inside the shaft cavity rod 111. The bottom of the threaded rod 112 extends into the inside of the isolation chamber 512, and a second gear head 113 is fixedly installed on one side extending into the inside of the isolation chamber 512. A direction detecting toothed plate 511 is fixedly installed on the side of the second ultrasonic detection probe 9 on one side inside the isolation chamber 512, and the direction detecting toothed plate 511 corresponds to the side of the second gear head 113 in meshing.

[0039] Among them, the specific steps of the precise scanning system configured by the first ultrasonic detection probe 510 and the second ultrasonic detection probe 9 are as follows: First, through the pigment injection pipe 3 outside the mixing cylinder 2, inject the pigments to be mixed into the inside of the mixing cylinder 2, that is, the inside of the embedded cylindrical shell 6, and drive the reciprocating scraping module 11 to rotate through the servo motor 14, that is, control the shaft cavity rod 111 to rotate, and drive the chassis 52 to rotate synchronously by using the shaft cavity rod 111. With this rotational force and the stirring blades 12 outside the shaft cavity rod 111, drive the injected pigments to be mixed.

[0040] Then, when the stirring blade 12 sweeps across the second ultrasonic detection probe 9 on the side wall of the embedded cylindrical shell 6, it will trigger the second ultrasonic detection probe 9 to emit sound waves for detecting the pigment concentration between the outer coating of the shaft cavity rod 111 in this direction. On the one hand, since the stirring blade 12 has just swept across this area, it can avoid the signal being blocked by the blade. On the other hand, in the place just stirred by the blade, the material is most evenly mixed, and the measurement is the most accurate at this time.

[0041] Then, during the rotation of the chassis 52, the bidirectional threaded rod 56 in the horizontal cavity 54 will rotate under the meshing action of the first gear head 57 and the gear ring 8, so that the bidirectional threaded rods 56 on both sides of the sleeve rod 55 drive the nut sleeves 59 on both sides to move back and forth in their respective limiting slots 58, control the first ultrasonic detection probe 510 to move back and forth in the isolation chamber 512, and scan the inside of the embedded cylindrical shell 6 back and forth, generating a scanning and monitoring sound wave from bottom to top.

[0042] Finally, through the structure of the acoustic modeling in the existing technology configured externally, and using the different reflections of different pigments, accurately detect the ratio of the pigments.

[0043] Specifically, the collaborative working mechanism of the upper second ultrasonic detection probe 9 and the bottom first ultrasonic detection probe 510 is based on the coupling detection principle from the frequency domain to the spatial domain to solve the measurement error problem caused by the contradiction between the penetration depth and resolution of a single probe. When the upper high-frequency probe scans the upper region of the mixing cylinder, the short-wavelength sound waves it emits can accurately capture the dispersion state of pigment particles, while the bottom low-frequency probe utilizes the long-wavelength characteristic to penetrate the possible agglomerated regions in the middle and lower parts. The attenuation rate of its sound waves when passing through the diameter color patches is only one-third of that of the high-frequency probe.

[0044] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown in [IDs], grooves are provided on the inner side wall of the axial cavity rod 111, and a magnetic nut sleeve ring 114 corresponding to the engagement with the threaded rod 112 is slidably installed through the grooves. A magnetic coating is arranged on the outer edge surface of the magnetic nut sleeve ring 114. A magnetic nut scraping ring 115 is movably sleeved on the outer surface of the axial cavity rod 111, and a magnetic coating corresponding to the adsorption with the magnetic nut sleeve ring 114 is arranged on the inner circular ring surface of the magnetic nut scraping ring 115.

[0045] Among them, the configured magnetic nut sleeve ring 114 and the magnetic nut scraping ring 115 are adsorbed together across the axial cavity rod 111. During the rotation of the chassis 52, when the bidirectional threaded rod 56 drives the nut sleeves 59 on both sides to reciprocate, it will also drive the threaded rod 112 inside the axial cavity rod 111 to rotate under the pushing action of the lateral tooth plate 511 on one side, so that the magnetic nut sleeve ring 114 engaged with the outer surface of the threaded rod 112 adsorbs the magnetic nut scraping ring 115 to move up and down synchronously. During the working process, the magnetic nut scraping ring 115 automatically scrapes the outer surface of the axial cavity rod 111 reciprocally to timely remove some pigment impurities remaining on the outer surface of the axial cavity rod 111, so as not to interfere with normal detection.

[0046] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8As shown, a linkage air guiding module 13 is also arranged at the inner top of the mixing cylinder 2. The linkage air guiding module 13 includes an extension rod 131 fixedly installed at the top of the axial center cavity rod 111. An isolation cylinder 132 is fixedly installed on the upper side of the extension rod 131. The outer side of the isolation cylinder 132 is closely attached to the inner wall of the embedded cylindrical shell 6. A plurality of ventilation round openings are formed at the bottom of the isolation cylinder 132. A fan group 133 is fixedly installed inside the isolation cylinder 132. A servo motor 14 is fixedly installed at the top of the mixing cylinder 2 through a bracket. The output end of the servo motor 14 is fixedly connected to the axial center of the top of the isolation cylinder 132.

[0047] Among them, the configured servo motor 14 serves as the driving end of the device. During the process of controlling the operation of the axial center cavity rod 111, it can also control the synchronous operation of the linkage air guiding module 13 at the top. Because during the process of pigment mixing, foam will be generated. Through the fan group 133 in the isolation cylinder 132, an air duct from top to bottom is generated during operation, which can effectively disperse the foam. During the color matching process of environmentally friendly water-based paint, the generation and retention of bubbles are key issues affecting the mixing uniformity and detection accuracy. Traditional mechanical defoaming schemes rely on the shearing and crushing of stirring blades. By using the mechanical air flow of the linkage air guiding module 13 to cooperate in defoaming, dual defoaming enhancement of dynamic air flow compensation and mechanical crushing is achieved. A local negative pressure area is generated in the stirring shaft area, sucking the suspended bubbles to the surface. Dynamic pressure suppression and continuous wind pressure suppress the cavitation effect inside the paint material, reducing the generation of new bubbles and improving the accuracy of the internal detection end during the color matching process.

[0048] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the stirring blade 12 as a whole has an L-shaped cavity structure, and a magnetoresistive induction module is fixedly installed in the inner cavity of each stirring blade 12, and the outer side of each stirring blade 12 is closely attached to the inner wall of the embedded cylindrical shell 6.

[0049] Among them, a magnetoresistive induction module is fixedly installed in the inner cavity of each stirring blade 12. The magnetoresistive induction modules are all structures that can generate magnetic induction signals in the prior art and are used to trigger the second ultrasonic detection probe 9 to work.

[0050] A color matching method for an accurate color matching device for producing environmentally friendly water-based paint includes the following steps: S1: First, inject the water-based paint base and pigment into the inner cylindrical shell 6 through the pigment injection pipe 3. Start the servo motor 14 to drive the rotation of the axial cavity rod 111, drive the stirring blade 12 to stir the mixed liquid. At the same time, through the linkage of the axial cavity rod 111 with the chassis 52 and the nesting disk 51, the multi-axis end linkage mechanism 5 rotates as a whole around the axis of the mixing cylinder 2 to ensure that the stirring blade 12 moves closely along the inner wall of the inner cylindrical shell 6; S2: Then, when the stirring blade 12 sweeps across the area corresponding to the second ultrasonic detection probe 9, its built-in magnetoresistive induction module triggers the probe to emit high-frequency ultrasonic waves. After the sound waves penetrate the inner cylindrical shell 6, they return through the reflection coating on the surface of the axial cavity rod 111 and are received by the probe to complete the acquisition of the three-dimensional concentration field data of the mixed liquid; S3: Then, when the chassis 52 rotates, the first gear head 57 meshes with the gear ring 8 to drive the rotation of the bidirectional threaded rod 56, drive the nut sleeve 59 to reciprocate along the limit notch 58, so that the first ultrasonic detection probe 510 performs a bottom scan in the isolation cavity 512. At the same time, the direction detection tooth plate 511 meshes with the second gear head 113 to drive the rotation of the threaded rod 112. Through the magnetic linkage of the magnetic nut sleeve ring 114 and the magnetic nut scraping ring 115, the automatic scraping and cleaning of the surface of the axial cavity rod 111 is realized; S4: Finally, the servo motor 14 synchronously drives the rotation of the isolation cylinder 132 of the linkage air guiding module 13. The downward air flow generated by the fan group 133 blows the foam on the surface of the mixed liquid through the ventilation round opening. After the mixing reaches the standard, the electric control valve of the water-based paint discharge pipe 4 is opened to output the finished product, and the color mixing process is completed.

[0051] The present invention covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0052] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A precise color mixing device for the production of environmentally friendly water-based paint, comprising a lifting base, characterized in that: A mixing cylinder is fixedly installed on the top of the lifting base, an embedded cylindrical shell is fixedly connected to the inner wall of the mixing cylinder, the embedded cylindrical shell and the mixing cylinder as a whole form a structure with a sandwich cavity on the side wall, and there is a gap between the bottom end of the embedded cylindrical shell and the bottom surface of the mixing cylinder, and two groups of upper and lower second ultrasonic detection probes arranged in sequence according to the circumference are fixedly installed in the sandwich cavity between the embedded cylindrical shell and the mixing cylinder; The bottom surface of the mixing cylinder is movably provided with a multi-axis end linkage mechanism, the multi-axis end linkage mechanism includes a chassis, the side of the chassis is sealed and clamped in the interval at the bottom of the embedded cylindrical shell, and a reciprocating scraping module is arranged at the center position of the upper surface of the chassis, the reciprocating scraping module includes an axial cavity rod, the outer rod surface of the axial cavity rod is provided with a reflective coating corresponding to the second ultrasonic detection probe, and the outer top position of the axial cavity rod is fixedly connected with a plurality of stirring blades in a circle in sequence; Among them, a servo motor for driving the rotation of the axial cavity rod is configured at the top of the mixing barrel. The output end of the servo motor controls the axial cavity rod to rotate 360 ​​degrees, so as to drive the stirring blades to reciprocately scan the second ultrasonic detection probe through the embedded cylindrical shell, and when the stirring blades on each side scan the second ultrasonic detection probe, ultrasonic waves are triggered to be emitted toward the axial cavity rod to complete unobstructed detection.

2. The precise color mixing device for producing environmentally friendly water-based paint according to claim 1, characterized in that: A concave ring cavity is provided at the bottom of the interlayer cavity between the embedded cylindrical shell and the mixing cylinder, a gear ring is fixedly installed inside the concave ring cavity, a notch limit sleeve is provided at the center position of the inner bottom circle of the mixing cylinder, the multi-axis end linkage mechanism includes a fitting disk movably installed in the notch limit sleeve, the chassis is fixedly installed on the upper side of the fitting disk, a sealing sleeve is fixedly installed at the side position of the upper surface of the chassis in the sealing annular groove at the bottom of the embedded cylindrical shell, a horizontal cavity passing through the center of the circle is provided inside the chassis, the horizontal cavity completely penetrates the chassis, and a fitting rod is movably installed at the midpoint of the horizontal cavity.

3. The precise color mixing device for producing environmentally friendly water-based paint according to claim 2, characterized in that: Two sides of the sleeve rod are fixedly connected with a bidirectional threaded rod, and the bidirectional threaded rod on each side passes through the side of the chassis through a horizontal cavity, and a first gear head is also fixedly installed at the end point position of the extended end of the bidirectional threaded rod on one side, and the first gear head is placed as a whole in the concave ring cavity and meshes with the gear ring.

4. The precise color mixing device for producing environmentally friendly water-based paint according to claim 3 is characterized in that: The multi-axis end linkage mechanism also includes an isolation cavity fixedly mounted on the upper surface of the chassis. The isolation cavity as a whole is a rectangular cavity structure that expands to both sides with the center of the chassis as the midpoint, and the expanded ends on both sides are connected to the inner annular surface of the sealing annular groove. Limiting grooves facing the bidirectional threaded rod are opened at both sides of the inner bottom of the isolation cavity, and nut sleeves that engage with the bidirectional threaded rod on the same side are slidably mounted on the limiting grooves, and a first ultrasonic detection probe is fixedly mounted on the upper surface of each nut sleeve, and coupling coatings corresponding to the output end of the first ultrasonic detection probe are arranged on both sides of the inner top of the isolation cavity.

5. The precise color mixing device for producing environmentally friendly water-based paint according to claim 4, characterized in that: Corresponding coupling coatings are arranged at the positions on the side walls of the embedded cylindrical shell that are in close contact with the output end of the second ultrasonic detection probe, a pigment injection tube leading to the interior of the mixing cylinder is fixedly installed on the upper side of the side wall of the mixing cylinder, a water-based paint discharge pipe is fixedly installed on the lower side of the side wall of the mixing cylinder, and electric control valves are arranged on the pigment injection pipe and the water-based paint discharge pipe, the axial cavity rod is fixedly installed at the midpoint of the upper surface of the isolation cavity, and the inner cavity of the axial cavity rod is communicated with the isolation cavity.

6. The precise color mixing device for producing environmentally friendly water-based paint according to claim 5, characterized in that: The reciprocating scraping module also includes a threaded rod movably installed at the center position of the inner circle of the axial hollow cavity rod, the bottom of the threaded rod extends into the interior of the isolation cavity, and a second gear head is fixedly installed on one side extending into the interior of the isolation cavity, and a direction-finding gear plate is fixedly installed on the side of the second ultrasonic detection probe on one side of the interior of the isolation cavity, and the direction-finding gear plate is meshed with the side of the second gear head.

7. The precise color mixing device for producing environmentally friendly water-based paint according to claim 6, characterized in that: A groove is provided on the inner side wall of the axial hollow rod, and a magnetic nut ring corresponding to the threaded rod is slidably installed through the groove, the outer edge surface of the magnetic nut ring is provided with a magnetic coating, and a magnetic nut scraping ring is movably sleeved on the outer surface of the axial hollow rod, and a magnetic coating corresponding to the adsorption of the magnetic nut ring is provided on the inner annular surface of the magnetic nut scraping ring.

8. The precise color mixing device for producing environmentally friendly water-based paint according to claim 6, characterized in that: The inner top of the mixing cylinder is also configured with a linkage air guide module, which includes an extension rod fixedly installed on the top of the axial cavity rod, an isolation cylinder fixedly installed on the upper side of the extension rod, the outer edge of the isolation cylinder is tightly attached to the inner wall of the embedded cylindrical shell, and a plurality of air vents are opened at the bottom of the isolation cylinder. A fan group is fixedly installed inside the isolation cylinder, and a servo motor is fixedly installed on the top of the mixing cylinder through a bracket, and the output end of the servo motor is fixedly connected to the axis of the top of the isolation cylinder.

9. The precise color mixing device for producing environmentally friendly water-based paint according to claim 8, characterized in that: The stirring blade is an L-shaped cavity structure as a whole, and a magnetoresistive induction module is fixedly installed in the inner cavity of each stirring blade, and the outer side surface of each stirring blade is tightly attached to the inner wall of the embedded cylindrical shell.

10. A color mixing method for a precise color mixing device for producing environmentally friendly water-based paint, characterized in that: Applicable to a precise color mixing device for producing environmentally friendly water-based paint as claimed in any one of claims 1 to 9, The following steps are involved: S1: First, water-based paint base material and pigment are injected into the inner part of the embedded cylindrical shell through the pigment injection tube, and the servo motor is started to drive the axial cavity rod to rotate, driving the stirring blade to stir the mixed liquid. At the same time, the axial cavity rod is linked with the chassis and the sleeve disk, so that the multi-axis end linkage mechanism rotates around the axis of the mixing cylinder as a whole, ensuring that the stirring blade moves closely against the inner wall of the embedded cylindrical shell; S2: Then, when the stirring blade sweeps over the corresponding area of ​​the second ultrasonic detection probe, its built-in magnetoresistive sensing module triggers the probe to emit high-frequency ultrasonic waves. After the sound waves penetrate the embedded cylindrical shell, they return through the reflective coating on the surface of the axial cavity rod. The signal is received by the probe to complete the three-dimensional concentration field data acquisition of the mixed liquid. S3: Then, when the chassis rotates, the first gear head engages with the gear ring to drive the bidirectional threaded rod to rotate, driving the nut sleeve to move back and forth along the limit slot, so that the first ultrasonic detection probe performs bottom scanning in the isolation cavity. At the same time, the direction-finding gear plate engages with the second gear head to drive the threaded rod to rotate, and the magnetic attraction of the magnetic nut ring and the magnetic nut scraping ring are linked to realize automatic scraping and cleaning of the surface of the axial cavity rod; S4: Finally, the servo motor synchronously drives the isolation cylinder of the linked air guide module to rotate, and the downward airflow generated by the fan group blows away the foam on the surface of the mixed liquid through the ventilated circular port. After the mixture meets the standards, the electric control valve of the water-based paint discharge pipe is opened to output the finished product, completing the color adjustment process.

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