A detection device for paint production

Abstract

The application belongs to the field of coating detection, and specifically discloses a detection equipment for coating production, which comprises a sampling mechanism, wherein the sampling mechanism is connected with a base, a stirring tank is installed at the upper end of the base, the stirring tank is communicated with the sampling mechanism, the sampling mechanism comprises a stepping motor, the stepping motor is connected with a glass frame, a spectrometer is installed at one end of the glass frame, the output end of the stepping motor is in transmission connection with a lead screw, the lead screw is in threaded connection with a sliding rod, the sliding rod is in sliding connection with the glass frame at both ends, the sliding rod is connected with three sample cups which are arranged at equal intervals at the top of the sliding rod, and the sliding rod is in contact with a quantitative control mechanism. The stepping motor is used for driving the sliding rod to translate and trigger the quantitative control mechanism, the multi-angle test pieces arranged in an interlaced mode are combined with the spectrometer, the full-process automatic detection from layered sampling, sedimentation observation to coating optical performance analysis is realized, and the problems of sample cross contamination and low detection efficiency in the prior art are solved.

Description

A testing device for paint production Technical Field

[0001] This invention belongs to the field of coating testing, specifically a testing device for coating production. Background Technology

[0002] Patent application CN120043974A discloses a testing device for paint production, including a testing platform. A slide rail is fixedly mounted on the outer wall of the testing platform, and a sliding seat is slidably mounted inside the slide rail. A testing head for testing paint is mounted above the testing platform, and a UV lamp is mounted on the side of the testing head. The device also includes an elastic mounting part installed inside the sliding seat. The elastic mounting part supports paint testing paper, and the sliding seat is equipped with an adjustment component for adjusting the concentric bending arc between the elastic mounting part and the UV lamp cross-section. This testing device for paint production, by setting up the elastic mounting part, allows the sliding seat to bend the testing paper during the testing process, thus ensuring that the distance between all parts of the testing paper and the center of the UV lamp is as uniform as possible during UV lamp curing, thereby improving the curing effect of the paint.

[0003] Rapid testing of the uniformity, stability, and film performance of coating products during the coating production process is a crucial step in ensuring product quality. In existing technologies, including the aforementioned patents, traditional testing methods typically involve manual sampling. Workers must extract samples from different depths within the mixing tank before conducting film sampling and performance testing.

[0004] This method has the following drawbacks: manual sampling makes it difficult to accurately control sampling depth and time, easily leading to cross-contamination between samples from different layers. After sampling, samples need to be transferred to separate equipment for coating, making the process cumbersome and inefficient. Traditional testing equipment sampling mechanisms cannot achieve anti-drip and anti-splash control during the sampling process, affecting sampling accuracy. Existing testing equipment sampling mechanisms mostly use electric or pneumatic valves to control diversion for automated sampling, which is not only complex and costly but also requires an additional control system, making maintenance inconvenient. In the coating sampling stage, existing technology cannot achieve simultaneous testing of different flow directions (horizontal, inclined, vertical), requiring multiple operations to obtain comprehensive data. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a testing device for paint production, including a sampling mechanism, the sampling mechanism being connected to a base, a mixing tank being installed on the upper end of the base, and the mixing tank being connected to the sampling mechanism;

[0006] The sampling mechanism includes a stepper motor connected to a glass frame. A spectrometer is mounted on the left end of the glass frame. The output end of the stepper motor is connected to a lead screw drive. The lead screw is threadedly connected to a slide bar. Both ends of the slide bar are slidably connected to the glass frame. The top of the slide bar is connected to three equidistant sample cups. The slide bar is in contact with a quantitative control mechanism.

[0007] The quantitative control mechanism includes a first trigger plate, and multiple first trigger plates are provided. The multiple first trigger plates are in contact with a slide bar. Each first trigger plate is rotatably connected to one end of a first rocker. A reset mechanism is provided at the rotatable connection between the first rocker and the first trigger plate. The lengths of the multiple first rockers decrease sequentially. The other end of each first rocker is connected to one end of a first rotating shaft. The other end of the first rotating shaft is connected to a quantitative valve ball. The outer ring of each quantitative valve ball is in contact with the upper inner ring of a pre-connected pipe. Each pre-connected pipe is connected to a self-closing mechanism.

[0008] Furthermore, the metering valve ball includes a hemisphere, the lower end of which is connected to a flow-blocking plate, and the flow-blocking plate is in the shape of an eighth of a sphere.

[0009] Furthermore, the self-closing mechanism includes a baffle plate connected to the outer ring of the pre-connected pipe port, the baffle plate connected to one end of a torsion spring, the other end of the torsion spring connected to a rotating sleeve, the inner ring of the rotating sleeve connected to a first rotating shaft, the rotating sleeve contacting the baffle plate, and the lower inner ring of the pre-connected pipe port contacting a direct-access mechanism.

[0010] Furthermore, the direct extraction mechanism includes a valve block that contacts the inner ring at the lower end of the pre-connected pipe port. Multiple valve blocks are connected to a second rotating shaft, the end of which is connected to a second rocker arm, which is rotatably connected to a second trigger plate.

[0011] Furthermore, the reset mechanism includes a reset rotating block that contacts a transverse stop block. A longitudinal stop block is provided at the upper end of the reset rotating block. An arc-shaped telescopic rod is provided between the longitudinal stop block and the transverse stop block. A first elastic element is provided on the outer ring of the arc-shaped telescopic rod.

[0012] Furthermore, the sample cup is connected to one end of the spring plunger, and the other end of the spring plunger is connected to the anti-overflow plate. The sample cup has multiple sampling ports, and the sampling ports are in sliding contact with the anti-overflow plate.

[0013] Furthermore, the sampling port slides in contact with the test piece, the test piece is connected to the test plate, the test plate is slidably engaged with the glass frame, and multiple test pieces are arranged alternately from bottom to top. Each test piece is provided with a horizontal test surface, an inclined test surface, and a vertical test surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention drives the slide bar to translate by stepping motor, and pushes the first rocker with decreasing length in sequence, which drives the first rotating shaft to rotate the quantitative valve ball, thereby sequentially opening the pre-connection port channel. After the slide bar passes the first trigger plate, the quantitative valve ball is automatically closed by the reset mechanism, and the length of the first rocker bar is pushed to decrease in sequence, so as to more comprehensively sample different levels. Through the cooperation of the quantitative valve ball and the reset mechanism, cross-contamination of samples at different levels at the pre-connection port is prevented. The whole process is automatically completed by a purely mechanical structure without the need for an electrical control system, which improves the reliability of detection and the efficiency of operation. Moreover, most existing sampling mechanisms use vertical lifting trigger, which is complex in structure and easy to interfere with samples. The present invention drives each component to sample by translating the slide bar, which is more reasonable in layout and more stable in movement.

[0016] (2) The flow-blocking plate of the quantitative valve ball of the present invention is an eighth-circular plate, which can limit the cross-section of the coating flow and avoid excessive horizontal fluid impact force causing the coating to splash and fail to sink to the pre-connection port. The cooperation between the hemisphere and the flow-blocking plate allows the flow-blocking plate to form a controllable opening when rotating. The movement distance of the slide bar is precisely controlled by the stepper motor driving the lead screw, thereby adjusting the swing amplitude of the first rocker arm, and finally achieving precise control of the rotation angle of the flow-blocking plate. This structure allows the device to accurately control the opening size of the flow-blocking plate according to the sampling requirements. When the opening is small, it can intercept layered coating samples of different depths within a specific time period, improving the accuracy and representativeness of the sampling.

[0017] (3) The sample cup of the present invention can remain stationary to observe the stratification phenomenon by retention and precipitation, or it can be driven by a stepper motor to continue to move forward, so that the sample cup carries the coating sample for insertion sampling. The staggered arrangement of the test pieces avoids the superposition and contamination of different layers of samples during the dripping process, ensuring the accuracy of the test results. The test surfaces at multiple angles (horizontal, inclined and vertical) can simultaneously detect the performance of the coating in different flow directions, including leveling, anti-sagging and adhesion distribution. The sliding snap-fit ​​test plate is easy to replace and clean quickly. The integrated design realizes the full-process automated detection from sampling and precipitation observation to coating film sampling, which significantly improves the detection efficiency and reliability. At the same time, after the coating film is formed, the spectrometer at the top will perform non-contact scanning of the coating film on the surface of each test piece. By analyzing the reflection spectrum characteristics, the optical performance indicators such as the color consistency, coating thickness distribution and pigment dispersion of the coating are detected simultaneously. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the sampling mechanism of the present invention;

[0020] Figure 3 is a partial structural schematic diagram of the sampling mechanism of the present invention;

[0021] Figure 4 is a schematic diagram of the quantitative control mechanism of the present invention;

[0022] Figure 5 is a schematic diagram of the direct extraction mechanism of the present invention;

[0023] Figure 6 is an enlarged structural diagram of point A in Figure 5;

[0024] Figure 7 is an enlarged structural diagram of point B in Figure 4;

[0025] Figure 8 is a schematic diagram of the structure of the test plate of the present invention;

[0026] Figure 9 is a schematic diagram of the structure of the sample cup of the present invention;

[0027] Figure 10 is a schematic diagram of the anti-overflow plate of the present invention;

[0028] Figure 11 is a schematic diagram of the structure of the flow cutter of the present invention.

[0029] In the diagram: 1. Sampling mechanism; 11. Glass frame; 12. Stepper motor; 121. Lead screw; 122. Slide rod; 13. Sample cup; 131. Spring plunger; 132. Overflow preventer; 133. Sampling port; 14. Quantitative control mechanism; 141. First trigger plate; 142. First rocker arm; 143. First rotating shaft; 144. Quantitative valve ball; 1441. Hemisphere; 1442. Flow cut-off plate; 145. Self-closing mechanism; 1451. 1452 Rotating sleeve; 1453 Torsion spring; 1454 Baffle; 155 Direct take-off mechanism; 156 Second trigger plate; 157 Second rocker arm; 158 Second rotating shaft; 159 Valve block; 100 Reset mechanism; 161 Reset rotating block; 162 Lateral stop block; 163 Longitudinal stop block; 164 Arc-shaped telescopic rod; 165 First elastic element; 17 Test plate; 171 Test piece; 18 Pre-connected pipe port; 2. Mixing tank; 3. Base. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0032] As shown in Figures 1 to 11, the present invention provides a testing device for paint production, including a sampling mechanism 1 connected to a base 3. A mixing tank 2 is installed on the upper end of the base 3 and communicates with the sampling mechanism 1. The sampling mechanism 1 includes a stepper motor 12 connected to a glass frame 11. A spectrometer is installed on the left end of the glass frame 11. The output end of the stepper motor 12 is connected to a lead screw 121. The lead screw 121 is threadedly connected to a slide rod 122. Both ends of the slide rod 122 are slidably connected to the glass frame 11. The top of the slide rod 122 is connected to three equidistantly arranged sample cups 13. The slide rod 122 is in contact with a quantitative control mechanism 14. The quantitative control mechanism 14 includes a first trigger plate 141, and multiple first trigger plates 141 are provided. Multiple first trigger plates 141 are in contact with the slide rod 122. Each first trigger plate 141 is rotatably connected to one end of a first rocker arm 142. A reset mechanism 16 is provided at the rotatable connection between the first rocker arm 142 and the first trigger plate 141. Multiple first rocker arms 142 are in contact with the slide rod 122. The length of the rod 142 decreases sequentially. The other end of the first rocker 142 is connected to one end of a first rotating shaft 143, and the other end of the first rotating shaft 143 is connected to a quantitative valve ball 144. The outer ring of each quantitative valve ball 144 contacts the upper inner ring of a pre-connection port 18. Each pre-connection port 18 is connected to a self-closing mechanism 145. The stepper motor 12 drives the slide rod 122 to translate, which sequentially pushes the first rocker 142 with decreasing length, causing the first rotating shaft 143 to rotate the quantitative valve ball 144, thereby sequentially opening the channel of the pre-connection port 18. After the slide rod 122 passes the first trigger plate 141, the quantitative valve ball 144 is automatically closed by the reset mechanism 16. The length of the first rocker 142 is sequentially reduced, thereby more comprehensively sampling different layers. The cooperation of the quantitative valve ball 144 and the reset mechanism 16 prevents cross-contamination of samples from different layers at the pre-connection port 18. The entire process is completed automatically by a purely mechanical structure without the need for an electronic control system, which improves the reliability of detection and the efficiency of operation.

[0033] The metering valve ball 144 includes a hemisphere 1441, the lower end of which is connected to a flow-blocking plate 1442. The flow-blocking plate 1442 is an eighth-spherical plate. The flow-blocking plate 1442 of the metering valve ball 144, being an eighth-spherical plate, restricts the flow cross-section of the coating sample, preventing excessive horizontal fluid impact that could cause coating splashing and prevent it from settling into the pre-connection port 18. The cooperation between the hemisphere 1441 and the flow-blocking plate 1442 allows the flow-blocking plate 1442 to form a controllable opening during rotation. The stepper motor 12 drives the lead screw 121 to precisely control the movement distance of the slide bar 122, thereby adjusting the swing amplitude of the first rocker arm 142, ultimately achieving precise control of the rotation angle of the flow-blocking plate 1442. This structure allows the device to precisely control the opening size of the flow-blocking plate 1442 according to sampling requirements. At a small opening, it can intercept layered coating samples of different depths within a specific time period, improving the accuracy and representativeness of the sampling.

[0034] The self-closing mechanism 145 includes a baffle 1453, which is connected to the outer ring of the pre-connected pipe port 18. One end of the baffle 1453 is connected to a torsion spring 1452, and the other end of the torsion spring 1452 is connected to a rotating sleeve 1451. The inner ring of the rotating sleeve 1451 is connected to a first rotating shaft 143, and the rotating sleeve 1451 contacts the baffle 1453. The lower inner ring of the pre-connected pipe port 18 contacts the direct-access mechanism 15. When the first rotating shaft 143 is driven to rotate by the first rocker arm 142, it drives the rotating sleeve 1451 to rotate synchronously, causing the torsion spring 1452 to accumulate torque. When the rotating sleeve 1451 rotates, it undergoes relative displacement with the baffle 1453. When the external force is removed, the rebound force of the torsion spring 1452 drives the rotating sleeve 1451 to rotate in the opposite direction, causing the first rotating shaft 143 and the metering valve ball 144 to reset. The rotating sleeve 1451 finally contacts the baffle 1453 to achieve precise positioning and complete the closing action. The lower end of the pre-connected pipe 18 is sealed to the direct access mechanism 15 via the valve block 154. This purely mechanical self-closing mechanism 145 can achieve rapid automatic closure without external power, preventing sample leakage and cross-contamination. The overall structure is simple and reliable, easy to maintain, and has a long service life.

[0035] The direct sampling mechanism 15 includes a valve block 154, which contacts the lower inner ring of the pre-connected pipe port 18. Multiple valve blocks 154 are connected to a second rotating shaft 153, the end of which is connected to a second rocker arm 152. The second rocker arm 152 is rotatably connected to a second trigger plate 151. By triggering the second trigger plate 151 through the slide rod 122, the opening and closing of multiple valve blocks 154 can be controlled synchronously, realizing the centralized sampling of multi-channel samples. The tight contact between the valve block 154 and the lower inner ring of the pre-connected pipe port 18 ensures good sealing. The overall structure is simple and easy to operate, and the sample collection operation can be completed quickly. The reset mechanism 16 ensures that the valve block 154 can automatically reset and seal, avoiding sample residue or contamination.

[0036] The reset mechanism 16 includes a reset rotating block 161. The reset mechanism 16 is used to reset the first trigger plate 141 or the second trigger plate 151. The reset rotating block 161 contacts the transverse stop 162. A longitudinal stop 163 is provided at the upper end of the reset rotating block 161. An arc-shaped telescopic rod 164 is provided between the longitudinal stop 163 and the transverse stop 162. The arc-shaped telescopic rod 164 is an arc-shaped telescopic sleeve rod. A first elastic element 165 is provided on the outer ring of the arc-shaped telescopic rod 164. The first elastic element 165 is a spring. Through the cooperation of the reset rotating block 161 and the transverse stop 162, it is ensured that the first trigger plate 141 and the second trigger plate 151 can be reset and retracted in time after triggering, providing a return path for the slide bar 122. The first elastic element 165 provides a stable reset force, ensuring the reliability of the reset action, preventing the problem of repeated triggering when the slide bar 122 returns, and ensuring the accuracy and continuity of the equipment operation.

[0037] Sample cup 13 is connected to one end of spring plunger 131, and the other end of spring plunger 131 is connected to anti-overflow plate 132. Sample cup 13 has multiple sampling ports 133. Sampling ports 133 slide in contact with anti-overflow plate 132 and sample ports 133 slide in contact with test piece 171. Test piece 171 is connected to test plate 17, and test plate 17 slides and engages with glass frame 11. Test pieces 171 are arranged alternately from bottom to top, and each test piece 171 has a horizontal test surface, an inclined test surface, and a vertical test surface. Sample cup 13 can remain stationary to observe stratification and sedimentation, or it can be driven forward by stepper motor 12 to move screw 121, causing sample cup 13 to carry paint sample for insertion of test piece 171 for sampling. The staggered arrangement of the 171 samples avoids contamination from the superposition of samples at different levels during the dripping process, ensuring the accuracy of the test results. The test surfaces at multiple angles (horizontal, inclined, and vertical) can simultaneously test the performance of the coating in different flow directions, including leveling, anti-sagging, and adhesion distribution. The sliding snap-fit ​​test plates 17 facilitate quick replacement and cleaning. The integrated design realizes fully automated testing from sampling and sedimentation observation to coating film sampling, significantly improving testing efficiency and reliability. At the same time, after the coating film is formed, the spectrometer at the top will perform non-contact scanning of the coating film on the surface of each test piece 171. By analyzing the reflection spectral characteristics, the optical performance indicators such as the color consistency, coating thickness distribution, and pigment dispersion of the coating can be detected simultaneously.

[0038] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A testing device for paint production, comprising a sampling mechanism (1), characterized in that, The sampling mechanism (1) is connected to the base (3). A stirring tank (2) is installed on the upper end of the base (3), and the stirring tank (2) is connected to the sampling mechanism (1). The sampling mechanism (1) includes a stepper motor (12), which is connected to a glass frame (11). A spectrometer is installed on the left end of the glass frame (11). The output end of the stepper motor (12) is connected to a lead screw (121). The lead screw (121) is threadedly connected to a slide rod (122). Both ends of the slide rod (122) are slidably connected to the glass frame (11). The top of the slide rod (122) is connected to three equidistant devices. The sample cup (13) is connected, and the slide bar (122) is in contact with the quantitative control mechanism (14); the quantitative control mechanism (14) includes a first trigger plate (141), and multiple first trigger plates (141) are provided. Multiple first trigger plates (141) are in contact with the slide bar (122), and each first trigger plate (141) is rotatably connected to one end of a first rocker arm (142). A reset mechanism (16) is provided at the rotatable connection between the first rocker arm (142) and the first trigger plate (141). The lengths of the multiple first rocker arms (142) decrease sequentially. 42) The other end is connected to one end of a first rotating shaft (143), the other end of the first rotating shaft (143) is connected to a metering valve ball (144), the outer ring of each metering valve ball (144) contacts the upper inner ring of a pre-connecting port (18), each pre-connecting port (18) is connected to a self-closing mechanism (145); the self-closing mechanism (145) includes a baffle (1453), the baffle (1453) is connected to the outer ring of the pre-connecting port (18), the baffle (1453) is connected to one end of a torsion spring (1452), and the other end of the torsion spring (1452) is connected to a rotating sleeve (14). 51) Connection, the inner ring of the rotating sleeve (1451) is connected to a first rotating shaft (143), the rotating sleeve (1451) is in contact with the baffle (1453), and the lower inner ring of the pre-connecting port (18) is in contact with a direct-access mechanism (15); the direct-access mechanism (15) includes a valve block (154), the valve block (154) is in contact with the lower inner ring of the pre-connecting port (18), a plurality of valve blocks (154) are connected to a second rotating shaft (153), the end of the second rotating shaft (153) is connected to a second rocker arm (152), and the second rocker arm (152) is rotatably connected to a second trigger plate (151).

2. The testing equipment for paint production according to claim 1, characterized in that, The metering valve ball (144) includes a hemisphere (1441), the lower end of which is connected to a flow cut-off plate (1442), which is an eighth-circular plate shape.

3. The testing equipment for paint production according to claim 1, characterized in that, The reset mechanism (16) includes a reset rotating block (161), which contacts a transverse stop (162). A longitudinal stop (163) is provided at the upper end of the reset rotating block (161). An arc-shaped telescopic rod (164) is provided between the longitudinal stop (163) and the transverse stop (162). A first elastic element (165) is provided on the outer ring of the arc-shaped telescopic rod (164).

4. The testing equipment for paint production according to claim 1, characterized in that, The sample cup (13) is connected to one end of the spring plunger (131), and the other end of the spring plunger (131) is connected to the anti-overflow plate (132). The sample cup (13) has multiple sampling ports (133), and the sampling ports (133) are in sliding contact with the anti-overflow plate (132).

5. The testing equipment for paint production according to claim 4, characterized in that, The sampling port (133) slides in contact with the test piece (171), the test piece (171) is connected to the test plate (17), the test plate (17) is slidably engaged with the glass frame (11), and multiple test pieces (171) are arranged alternately from bottom to top. The test pieces (171) are respectively provided with a horizontal test surface, an inclined test surface and a vertical test surface.

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