A precise color mixing device and color mixing method for producing environmentally friendly water-based paint

Abstract

The present invention discloses a precise color grading device and color grading method for the production of environmentally friendly water-based paint, belonging to the technical field of water-based paint color grading devices. The device comprises a lifting base, a mixing drum, and an embedded cylindrical shell. There is a gap between the bottom end of the embedded cylindrical shell and the bottom surface of the mixing drum. Two groups of upper and lower second ultrasonic detection probes arranged in circumferential order are fixedly installed in the interlayer cavity between the embedded cylindrical shell and the mixing drum. The two groups of upper and lower staggered ultrasonic detection probes are arranged in the interlayer cavity formed by the mixing drum and the embedded cylindrical shell. Differentiated frequency configuration and acoustic waveguide effect are used to achieve reconstruction of the three-dimensional concentration field. Different from the vertical monitoring blind spot of the traditional single-layer arrangement, the stirring blade and the probe sweeping action are dynamically synchronized. The reflective coating and trigger mechanism are used to ensure that the timing of sound wave emission is accurately matched with the stirring gap, avoiding blade obstruction and capturing the optimal detection angle of the mixing transient.

Description

Technical Field

[0001] The present invention relates to the technical field of water-based paint color mixing devices, and more particularly to a precise color mixing device and a color mixing method for producing environmentally friendly water-based paint. Background Art

[0002] Environmentally friendly water-based paint is a green coating material. During its production process, it is necessary to accurately mix the resin base material with a variety of pigments to achieve the target color. In the existing technology, the precise color adjustment device sets a stirring mechanism in the mixing barrel and uses an ultrasonic standing wave generator to monitor the uniformity of the material in real time to ensure the dispersion and color consistency of the pigment. The probe arranged outside the tank emits high-frequency sound waves, and the internal concentration distribution is inverted based on the sound wave attenuation and reflection characteristics, thereby dynamically adjusting the stirring parameters.

[0003] However, traditional non-invasive monitoring solutions have significant limitations in practical applications. Specifically, when the agitator paddle periodically passes through the area corresponding to the ultrasonic probe, its metal structure blocks the sound wave propagation path, resulting in missing slices in the tomographic imaging. Existing technologies usually increase the number of probes or increase the sampling frequency to compensate for data loss, but due to limited tank installation space and cost, it is difficult to completely eliminate signal interference. In addition, the solidified paint remaining on the surface of the agitator shaft will also reflect abnormal sound waves, further reducing detection accuracy. Traditional improvement methods, such as adding a scraping mechanism or optimizing the probe layout, have little effect because they destroy the integrity of the non-invasive structure or increase the complexity of the equipment.

[0004] 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 obstruction of the stirring paddle, resulting in the loss of real-time data in the key mixing area. On the other hand, the acoustic artifacts formed by the residue on the rotating body of the mixing barrel axis distort the detection signal, resulting in the inability to achieve both color adjustment accuracy and production efficiency. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a precise color matching device and color matching method for the production of environmentally friendly water-based paint, aiming to solve the above technical problems.

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

[0007] A precise color-mixing device for producing environmentally friendly water-based paint, comprising a lifting base, a mixing drum fixedly mounted on the top of the lifting base, an inner cylindrical shell fixedly connected to the inner wall of the mixing drum, the inner cylindrical shell and the mixing drum integrally forming a structure with an interlayer cavity in the side wall, and a gap between the bottom end of the inner cylindrical shell and the bottom surface of the mixing drum, and two upper and lower groups of a plurality of second ultrasonic detection probes arranged in circumferential order fixedly mounted in the interlayer cavity between the inner cylindrical shell and the mixing drum;

[0008] The bottom surface of the mixing drum is movably provided with a multi-axis linkage mechanism, the multi-axis linkage mechanism includes a chassis, the side of the chassis is sealed and clamped in the gap 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 a plurality of stirring blades are fixedly connected in a circle at the outer top position of the axial cavity rod;

[0009] Among them, a servo motor is configured on the top of the mixing barrel to drive the rotation of the axial cavity rod. The output end of the servo motor controls the axial cavity rod to rotate 360 ​​degrees, so as to drive the stirring blade to sweep back and forth across the second ultrasonic detection probe through the embedded cylindrical shell, and when the stirring blade on each side sweeps across the second ultrasonic detection probe, it triggers ultrasonic waves to be emitted toward the axial cavity rod to complete unobstructed detection.

[0010] 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 ring 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 passes through the chassis, and a fitting rod is movably installed at the midpoint of the horizontal cavity.

[0011] 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 protruding 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.

[0012] 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.

[0013] As a further solution of the present invention: corresponding coupling coatings are provided at the position on the side wall of the embedded cylindrical shell that is close to 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, and a water-based paint discharge pipe is fixedly installed on the lower side of the side wall of the mixing cylinder. Electric control valves are provided on both 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.

[0014] As a further solution of the present invention: 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 also fixedly installed on the 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 engaged with the side of the second gear head.

[0015] As a further solution of the present invention: 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 provided on the outer surface of the axial hollow rod, and the inner annular surface of the magnetic nut scraping ring is provided with a magnetic coating corresponding to the adsorption of the magnetic nut ring.

[0016] As a further solution of the present invention: the inner top of the mixing cylinder is also configured with a linkage air guide module, the linkage air guide module includes an extension rod fixedly installed on the top of the axial cavity rod, an isolation cylinder is 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, a number of ventilation circular openings are opened at the bottom of the isolation cylinder, a fan group is fixedly installed inside the isolation cylinder, 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.

[0017] As a further solution of the present invention: 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.

[0018] A color mixing method for a precise color mixing device for producing environmentally friendly water-based paint, comprising the following steps:

[0019] 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. The servo motor is started to drive the axis cavity rod to rotate, driving the stirring blade to stir the mixed liquid. At the same time, the axis 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;

[0020] S2: Then, when the stirring blade sweeps across the area corresponding to the second ultrasonic detection probe, its built-in magnetoresistive sensing module triggers the probe to emit high-frequency ultrasonic waves. After penetrating the embedded cylindrical shell, the sound waves return through the reflective coating on the surface of the axial cavity rod. The signal is received by the probe, completing the three-dimensional concentration field data acquisition of the mixed liquid;

[0021] 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 a bottom scan 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 collar and the magnetic nut scraping ring are linked to achieve automatic scraping and cleaning of the surface of the axial cavity rod;

[0022] S4: Finally, the servo motor synchronously drives the isolation cylinder of the linked air guide module to rotate. The downward airflow generated by the fan group blows away the foam on the surface of the mixed liquid through the circular ventilation 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.

[0023] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0024] (1) This scheme arranges two sets of staggered ultrasonic detection probes in the sandwich cavity formed by the mixing cylinder and the embedded cylindrical shell, and adopts differentiated frequency configuration and acoustic waveguide effect to achieve reconstruction of the three-dimensional concentration field. Different from the vertical monitoring blind spot of the traditional single-layer layout, the stirring blade and the probe sweeping action are dynamically synchronized, and the reflective coating and trigger mechanism are used to ensure that the timing of the sound wave emission is accurately matched with the stirring gap, avoiding blade obstruction and capturing the optimal detection angle of the mixing transient.

[0025] (2) The bidirectional threaded rod is driven by gear linkage, so that the bottom probe moves back and forth in the isolation cavity for scanning. The three-dimensional coordinates of the color block agglomeration are accurately identified by combining the pulse echo flight time and energy integration dual parameter detection. When the chassis rotates, the direction-finding gear plate engages with the gear head to trigger the threaded rod to rotate, driving the magnetic scraper ring to self-clean the detection shaft, eliminating the interference of residues, and effectively distinguishing the true concentration gradient from acoustic artifacts.

[0026] (3) The environmental adaptability of the detection system is enhanced by the configured defoaming and mechanical cleaning functions. The built-in magnetic resistance sensing 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 linked air guide module drives the centrifugal fan through the axial cavity rod to generate 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 realizes the continuous cleaning of the reflective coating during the rotation process, avoiding the interference of the solidified paint on the sound wave reflection characteristics, and better controlling the color accuracy error while ensuring the integrity of the non-invasive detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a mixing drum in a semi-sectional state according to the present invention;

[0030] Figure 3 It is a structural schematic diagram of the multi-axis end linkage mechanism of the present invention in a disassembled state;

[0031] Figure 4 It is a structural schematic diagram of a half-section state of the multi-axis end linkage mechanism of the present invention;

[0032] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 7 This is a structural diagram of the linkage air guide module of the present invention;

[0035] Figure 8 It is a schematic diagram of the internal structure of the linked air guide module of the present invention.

[0036] Reference numerals

[0037] 1. Lifting base; 2. Mixing cylinder; 3. Pigment injection pipe; 4. Water-based paint discharge pipe;

[0038] 5. Multi-axis linkage mechanism; 51. Sleeve plate; 52. Chassis; 53. Sealing ring groove; 54. Horizontal cavity; 55. Sleeve rod; 56. Bidirectional threaded rod; 57. First gear head; 58. Limiting notch; 59. Nut ferrule; 510. First ultrasonic detection probe; 511. Direction-finding gear plate; 512. Isolation cavity;

[0039] 6. Embedded cylindrical shell; 7. Concave ring cavity; 8. Gear ring; 9. Second ultrasonic detection probe; 10. Notch limit sleeve;

[0040] 11. Reciprocating scraping module; 111. Axial cavity rod; 112. Threaded rod; 113. Second gear head; 114. Magnetic nut collar; 115. Magnetic nut scraping ring;

[0041] 12. Stirring blade;

[0042] 13. Linked air guide module; 131. Extension rod; 132. Isolation tube; 133. Fan assembly;

[0043] 14. Servo motor.

[0044] 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

[0045] The following describes in detail, with reference to the accompanying drawings and specific embodiments, a precise color-mixing device and color-mixing method for producing environmentally friendly water-based paints provided by the present invention. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to more specifically illustrate the embodiments and are not intended to limit the present invention.

[0046] 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 drum 2 is fixedly mounted on the top of the lifting base 1, an inner wall of the mixing drum 2 is fixedly connected to an embedded cylindrical shell 6, the embedded cylindrical shell 6 and the mixing drum 2 integrally form a structure with an interlayer cavity on the side wall, and a gap is formed between the bottom end of the embedded cylindrical shell 6 and the bottom surface of the mixing drum 2, and a plurality of second ultrasonic detection probes 9 arranged in sequence in a circumferential manner are fixedly mounted in the interlayer cavity between the embedded cylindrical shell 6 and the mixing drum 2;

[0047] The bottom surface of the mixing drum 2 is movably provided with a multi-axis linkage mechanism 5, and the multi-axis linkage mechanism 5 includes a chassis 52, the side of the chassis 52 is sealed and clamped in the gap 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 the outer rod surface of the axial cavity rod 111 is provided with a reflective coating corresponding to the second ultrasonic detection probe 9, and a plurality of stirring blades 12 are fixedly connected in a circle at the outer top position of the axial cavity rod 111;

[0048] Among them, the top of the mixing barrel 2 is provided with a servo motor 14 for driving the rotation 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 blade 12 to scan back and forth across the second ultrasonic detection probe 9 through the embedded cylindrical shell 6, and when the stirring blade 12 on each side sweeps across the second ultrasonic detection probe 9, it triggers the ultrasonic wave to be emitted toward the axial cavity rod 111 to complete unobstructed detection.

[0049] In order to solve the problem of distortion in mixing state monitoring caused by the periodic obstruction 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 tinting device, the above-mentioned technical solution is adopted to solve the problem. The above-mentioned technical solution mainly consists of a lifting base 1, a mixing drum 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 drum 2 and the embedded cylindrical shell 6 form a structure with a sandwich cavity on the side wall. The bottom of the embedded cylindrical shell 6 as the inner layer is not sealed with the bottom surface of the mixing drum 2, but there is a certain gap. In the sandwich cavity between the mixing drum 2 and the embedded cylindrical shell 6, two groups of second ultrasonic detection probes 9 arranged in sequence in a circle are fixedly installed. The configured second ultrasonic detection probes 9 are probe structures capable of generating ultrasonic waves in the prior art, and their output ends are facing the center of the mixing drum 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 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.

[0050] The configured multi-axis end linkage mechanism 5 includes a chassis 52, and is sealed 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, while 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 reciprocating scraping module 11 is driven to rotate by the rotation of the chassis 52. The reciprocating scraping module 11 includes an axial cavity rod 111, and the outer rod surface of the axial cavity rod 111 is provided with a reflective coating corresponding to the second ultrasonic detection probe 9. A plurality of stirring blades 12 are fixedly connected in a circular pattern at the outer top position of the axial cavity rod 111. The axial cavity rod 111 is controlled by the output end of the servo motor 14 to rotate 360 ​​degrees to drive the stirring blades 12 to scan back and forth across 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 toward the axial cavity rod 111 to complete unobstructed detection.

[0051] 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.

[0052] 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, and a gear ring 8 is fixedly installed inside the concave ring cavity 7. A notch 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 notch limit sleeve 10, and the chassis 52 is fixedly installed on the upper side of the fitting disk 51. A sealing sleeve is fixedly installed at the side position of the upper surface of the chassis 52 to form a sealing annular groove 53 at the bottom of the embedded cylindrical shell 6. A horizontal cavity 54 passing through the center of the circle is provided inside the chassis 52. The horizontal cavity 54 completely passes through the chassis 52, and a fitting rod 55 is movably installed at the midpoint of the horizontal cavity 54.

[0053] Among them, the concave ring cavity 7 arranged at the bottom of the interlayer cavity between the embedded cylindrical shell 6 and the mixing barrel 2 is used to install the gear ring 8. The chassis 52 is connected with the notch limit sleeve 10 through the movable connection relationship between the fitting disk 51, so that the chassis 52 can rotate 360 ​​degrees inside the mixing barrel 2, 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.

[0054] 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 side of the chassis 52 through the horizontal cavity 54, 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. The first gear head 57 is placed as a whole in the concave ring cavity 7 and meshes with the gear ring 8.

[0055] 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 provided with a first gear head 57 corresponding to the gear ring 8 meshing. 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.

[0056] 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 on both sides of the inner bottom of the isolation cavity 512. Nut sleeves 59 that engage 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 provided on both sides of the inner top of the isolation cavity 512.

[0057] 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 is directed toward the interior 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 probe 9 arranged in a circle on the outside of the mixing barrel 2. It can emit ultrasonic waves from the bottom to the interior of the mixing barrel 2, because during the pigment injection and mixing process, different color blocks often clump together during the mixing process. The clumped color blocks are equivalent to an obstacle block that can weaken the sound wave. When the stirring blade obstacle is eliminated, the color block agglomeration phenomenon is one of the core difficulties that lead to the distortion of the mixing uniformity monitoring. It 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 color blocks agglomerate to weaken 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.

[0058] Specifically, when pigment particles form dense clusters due to insufficient dispersion or localized flow stagnation, the difference in acoustic impedance between them and the base material, such as titanium dioxide or resin-based agglomerates, significantly alters ultrasonic propagation characteristics. On the one hand, high-frequency sound waves experience abnormal attenuation when penetrating the agglomerates, resulting in a sudden drop in the amplitude of the probe's received signal. On the other hand, the sound wave scattering effect at the agglomerate's edges induces Doppler shifts, distorting phase information. Traditional single-layer external probe solutions rely solely on horizontal detection data, making it difficult to capture vertical concentration gradients, especially when agglomerates are suspended in the lower middle portion of the mixing drum. To address this issue, a first ultrasonic detection probe 510 is added to the bottom of the interlayer cavity between the embedded cylindrical shell 6 and the mixing drum 2. This, combined with the high-resolution characteristics of the upper high-frequency probe, enables cross-band acoustic fluoroscopy. From a structural perspective, a bidirectional threaded rod 56 within the isolation cavity 512 drives the nut ferrule 59 to precisely move along the limiting notch 58, ensuring a consistent 0.1 mm gap between the output end of the first ultrasonic detection probe 510 and the coupling coating, ensuring stable acoustic transmission efficiency. In terms of detection logic, the bottom probe adopts pulse echo flight time and energy integration dual-mode detection: when the sound wave passes through the clustering area, TOF produces a time delay due to the change in 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 probe data, the three-dimensional coordinates of the cluster can be located in real time.

[0059] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8As shown, corresponding coupling coatings are provided on the side wall of the embedded cylindrical shell 6 at the position close to the output end of the second ultrasonic detection probe 9, a pigment injection tube 3 leading to the interior of the mixing barrel 2 is fixedly installed on the upper side of the side wall of the mixing barrel 2, and a water-based paint discharge pipe 4 is fixedly installed on the lower side of the side wall of the mixing barrel 2. Electric control valves are provided on both the pigment injection pipe 3 and the water-based paint discharge pipe 4. The axial cavity rod 111 is fixedly installed at the midpoint of the upper surface of the isolation chamber 512, and the inner cavity of the axial cavity rod 111 is communicated with the isolation chamber 512.

[0060] The configured pigment injection tube 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 adjustment.

[0061] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the reciprocating scraping module 11 also includes a threaded rod 112 movably mounted at the center position of the inner circle of the axial hollow rod 111, the bottom of the threaded rod 112 extends into the interior of the isolation cavity 512, and a second gear head 113 is also fixedly mounted on one side extending into the interior of the isolation cavity 512, and a direction-finding gear plate 511 is fixedly mounted on the side of the second ultrasonic detection probe 9 on one side of the interior of the isolation cavity 512, and the direction-finding gear plate 511 is meshed with the side of the second gear head 113.

[0062] The specific steps of the precise scanning system composed of the first ultrasonic detection probe 510 and the second ultrasonic detection probe 9 are as follows:

[0063] First, the pigment to be mixed is injected into the interior of the mixing barrel 2, that is, the inner side of the embedded cylindrical shell 6, through the pigment injection tube 3 on the outside of the mixing barrel 2, and the reciprocating scraping module 11 is driven to rotate by the servo motor 14, that is, the axial cavity rod 111 is controlled to rotate, and the axial cavity rod 111 is used to drive the chassis 52 to rotate synchronously, and the rotational force is used to cooperate with the stirring blade 12 on the outside of the axial cavity rod 111 to drive the injected pigment to be mixed.

[0064] Then, when the stirring blade 12 sweeps across the second ultrasonic detection probe 9 on the side wall of the embedded cylindrical shell 6, the second ultrasonic detection probe 9 will be triggered to emit sound waves to detect the pigment concentration between the outer coating of the axial hollow rod 111 in this direction. On the one hand, since the stirring blade 12 has just swept across this area, the blade can avoid blocking the signal. On the other hand, the material is mixed most evenly in the place where the blade has just stirred, and the measurement is most accurate at this time.

[0065] 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 rod 56 on both sides of the fitting rod 55 drives the nut sleeves 59 on both sides to move back and forth in their respective limiting slots 58, controlling the first ultrasonic detection probe 510 to move back and forth in the isolation cavity 512, and performing reciprocating scanning on the interior of the embedded cylindrical shell 6, thereby generating scanning monitoring sound waves from bottom to top.

[0066] Finally, by using the external configuration of the existing acoustic wave modeling structure and taking advantage of the different reflections of different pigments, the pigment ratio can be accurately detected.

[0067] Specifically, the collaborative working mechanism between the upper second ultrasonic detection probe 9 and the lower first ultrasonic detection probe 510 is based on the principle of frequency-domain to spatial-domain coupled detection, which addresses the measurement errors caused by the conflict between penetration depth and resolution of a single probe. When the upper high-frequency probe scans the upper area of ​​the mixing drum, the short-wavelength sound waves it emits accurately capture the dispersed state of the pigment particles. Meanwhile, the lower low-frequency probe utilizes its long wavelength to penetrate the potential agglomeration areas in the middle and lower parts. Its sound waves experience only one-third the attenuation rate of the high-frequency probe when passing through the diameter of the color block.

[0068] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, a groove is provided on the inner wall of the axial hollow rod 111, and a magnetic nut ring 114 corresponding to the threaded rod 112 is slidably installed through the groove, and the outer edge surface of the magnetic nut ring 114 is provided with a magnetic coating, and a magnetic nut scraping ring 115 is movably sleeved on the outer surface of the axial hollow rod 111, and the inner annular surface of the magnetic nut scraping ring 115 is provided with a magnetic coating corresponding to the adsorption of the magnetic nut ring 114.

[0069] Among them, the configured magnetic nut ring 114 and the magnetic nut scraping ring 115 are adsorbed together through the axial cavity rod 111. During the rotation of the chassis 52, the bidirectional threaded rod 56 drives the nut sleeves 59 on both sides to move back and forth. Under the push of the directional tooth plate 511 on one side, the threaded rod 112 inside the axial cavity rod 111 is driven to rotate, so that the engaged magnetic nut ring 114 on the outer surface of the threaded rod 112 adsorbs the magnetic nut scraping ring 115 and moves 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 back and forth, and timely removes some pigment impurities remaining on the outer surface of the axial cavity rod 111 to interfere with normal detection.

[0070] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the inner top of the mixing cylinder 2 is also configured with a linkage air guide module 13, and the linkage air guide module 13 includes an extension rod 131 fixedly installed on the top of the axial cavity rod 111, and an isolation cylinder 132 is fixedly installed on the upper side of the extension rod 131. The outer edge of the isolation cylinder 132 is tightly attached to the inner wall of the embedded cylindrical shell 6, and a number of ventilation circular openings are opened at the bottom of the isolation cylinder 132. A fan group 133 is fixedly installed inside the isolation cylinder 132, and a servo motor 14 is fixedly installed on the top of the mixing cylinder 2 through a bracket, and the output end of the servo motor 14 is fixedly connected to the axis of the top of the isolation cylinder 132.

[0071] Among them, the configured servo motor 14 serves as the driving end of the device. In the process of controlling the operation of the axial cavity rod 111, it can also control the top linkage air guide module 13 to work synchronously. Because foam will be generated in the process of pigment mixing, and the fan group 133 in the isolation tube 132 generates an air duct from top to bottom during operation, which can effectively blow away the foam. In the process of environmentally friendly water-based paint color matching, the generation and retention of bubbles are key issues affecting mixing uniformity and detection accuracy. The traditional mechanical defoaming solution relies on the shear crushing of the stirring blades. The mechanical airflow of the linkage air guide module 13 is used for coordinated defoaming, which realizes the dual defoaming enhancement of dynamic airflow compensation and mechanical crushing, and generates a local negative pressure area in the stirring shaft area to suck the suspended bubbles to the surface, dynamically suppress the pressure, and continuously suppress the cavitation effect inside the paint, reduce the generation of new bubbles, and improve the accuracy of the internal detection end during the color matching process.

[0072] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the stirring blade 12 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 12, and the outer side surface of each stirring blade 12 is tightly attached to the inner wall of the embedded cylindrical shell 6.

[0073] Among them, a magnetoresistive induction module is fixedly installed in the inner cavity of each stirring blade 12. The magnetoresistive induction module is a structure in the prior art that can generate a magnetic induction signal for triggering the second ultrasonic detection probe 9 to work.

[0074] A color mixing method for a precise color mixing device for producing environmentally friendly water-based paint, comprising the following steps:

[0075] S1: First, water-based paint base and pigment are injected into the inner surface of the embedded cylindrical shell 6 through the pigment injection tube 3, and the servo motor 14 is started to drive the axial cavity rod 111 to rotate, thereby driving the stirring blade 12 to stir the mixed liquid. At the same time, the axial cavity rod 111 is linked with the base plate 52 and the sleeve plate 51, so that the multi-axis linkage mechanism 5 as a whole rotates around the axis of the mixing barrel 2, ensuring that the stirring blade 12 moves closely against the inner wall of the embedded cylindrical shell 6;

[0076] S2: Then, when the stirring blade 12 sweeps across the area corresponding to the second ultrasonic detection probe 9, its built-in magnetoresistive sensing module triggers the probe to emit high-frequency ultrasonic waves. After penetrating the embedded cylindrical shell 6, the sound waves return through the reflective coating on the surface of the axial cavity rod 111. The signal is received by the probe, completing the three-dimensional concentration field data acquisition of the mixed liquid;

[0077] S3: Then, when the chassis 52 rotates, the first gear head 57 engages with the gear ring 8 to drive the bidirectional threaded rod 56 to rotate, driving the nut sleeve 59 to move back and forth along the limiting 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-finding gear plate 511 engages with the second gear head 113 to drive the threaded rod 112 to rotate. Through the magnetic linkage of the magnetic nut collar 114 and the magnetic nut scraping ring 115, the surface of the axial cavity rod 111 is automatically scraped and cleaned;

[0078] S4: Finally, the servo motor 14 synchronously drives the isolation tube 132 of the linked air guide module 13 to rotate, and the downward airflow generated by the fan group 133 blows away the foam on the surface of the mixed liquid through the ventilated circular port. After the mixing meets the standards, the electric control valve of the water-based paint discharge pipe 4 is opened to output the finished product, completing the color adjustment process.

[0079] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A precise color-mixing device for environmentally friendly water-based paint production, comprising a lifting base, characterized in that: A mixing drum is fixedly mounted on the top of the lifting base, an inner cylindrical shell is fixedly connected to the inner wall of the mixing drum, the inner cylindrical shell and the mixing drum as a whole form a structure with an interlayer cavity on the side wall, and a gap is formed between the bottom end of the inner cylindrical shell and the bottom surface of the mixing drum, and two groups of upper and lower second ultrasonic detection probes arranged in sequence in a circle are fixedly mounted in the interlayer cavity between the inner cylindrical shell and the mixing drum; The bottom surface of the mixing drum is movably provided with a multi-axis linkage mechanism, the multi-axis linkage mechanism includes a chassis, the side of the chassis is sealed and clamped in the gap 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 a plurality of stirring blades are fixedly connected in a circle at the outer top position of the axial cavity rod; The top of the mixing drum is equipped with a servo motor for driving the rotation of the axial cavity rod. The output end of the servo motor controls the axial cavity rod to rotate 360 ​​degrees, thereby driving the stirring blade to reciprocate across the second ultrasonic detection probe through the embedded cylindrical shell. When the stirring blade on each side passes the second ultrasonic detection probe, the ultrasonic wave is triggered to be emitted toward the axial cavity rod to complete unobstructed detection. 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 provided on the outer surface of the axial hollow rod, and the inner annular surface of the magnetic nut scraping ring is provided with a magnetic coating corresponding to the adsorption of the magnetic nut ring.

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 ring 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 passes through 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: 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 protruding end of the bidirectional threaded rod on one side. 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, 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. 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. Coupling coatings corresponding to the output end of the first ultrasonic detection probe are configured on both sides of the inner top of the isolation cavity.

5. The precise color-adjusting device for producing environmentally friendly water-based paint according to claim 4, characterized in that: Corresponding coupling coatings are provided on the side wall of the embedded cylindrical shell at a position close to 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, and a water-based paint discharge pipe is fixedly installed on the lower side of the side wall of the mixing cylinder. Electric control valves are provided on both 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-adjusting 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 mounted at the center position of the inner circle of the axial hollow rod, the bottom of the threaded rod extends into the interior of the isolation cavity, and a second gear head is fixedly mounted on one side extending into the interior of the isolation cavity, and a direction-finding gear plate is fixedly mounted 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-adjusting device for producing environmentally friendly water-based paint according to claim 6, characterized in that: The inner top of the mixing cylinder is also provided with a linkage air guide module, which includes an extension rod fixedly mounted on the top of the axial cavity rod, an isolation cylinder fixedly mounted 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, a number of ventilation circular openings are opened at the bottom of the isolation cylinder, a fan group is fixedly mounted inside the isolation cylinder, a servo motor is fixedly mounted 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.

8. The precise color-mixing device for producing environmentally friendly water-based paint according to claim 7, 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.

9. A color mixing method for a precise color mixing device for producing environmentally friendly water-based paint according to claim 8, characterized in that: 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. The servo motor is started to drive the axis cavity rod to rotate, driving the stirring blade to stir the mixed liquid. At the same time, the axis 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 across the area corresponding to the second ultrasonic detection probe, its built-in magnetoresistive sensing module triggers the probe to emit high-frequency ultrasonic waves. After penetrating the embedded cylindrical shell, the sound waves return through the reflective coating on the surface of the axial cavity rod. The signal is received by the probe, completing 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 a bottom scan 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 collar and the magnetic nut scraping ring are linked to achieve 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. The downward airflow generated by the fan group blows away the foam on the surface of the mixed liquid through the circular ventilation 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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