A test coating thickness detection device for polyester resin coating production

Abstract

The application discloses a kind of test coating thickness detection devices for polyester resin coating production, it is related to thickness detection technical field, including annular conveying frame, test coating block, spray cleaning mechanism, lifting assembly, lifting assembly rises from the bottom of annular conveyor belt and is lifted to test coating block, the upside of lifting assembly is provided with wet film detection mechanism;Wet film detection mechanism includes vertical frame, swing frame, connecting frame, wheel gauge, driving wheel is arranged in connecting frame, driving motor is connected to driving wheel, arc-shaped shaft slot is arranged on connecting frame, the sliding fit installation between the rotation axis of driving wheel and arc-shaped shaft slot, spray head is also provided on connecting frame;By driving wheel, so that wheel gauge always starts wet film thickness detection with maximum scale, and the quick cleaning of wheel gauge is realized in combination with driving wheel and spray head, the batch detection efficiency of wheel gauge is improved, while the steps of manual cleaning test coating block and wheel gauge surface coating are saved, and the cyclic detection use of test coating block is realized.

Description

Technical Field

[0001] This invention relates to the field of thickness detection technology, specifically to a device for detecting the thickness of a test coating layer used in the production of polyester resin coatings. Background Technology

[0002] In the trial application process of polyester resin coatings, measuring the coating thickness is a necessary and crucial step. Coating thickness measurement generally includes wet film thickness measurement and dry film thickness measurement. Dry film thickness measurement needs to be performed after spraying and drying, which greatly affects the time limit for judging the quality of the coating production process, and thus affects the coating production efficiency.

[0003] The advantage of using wet film thickness testing is that it can be measured immediately after a trial coating, without a long waiting period. When producing different batches of paint with the same formula, simply comparing the wet film thickness after a trial coating can determine whether the properties of the same formula are consistent across different batches. Currently, wet film thickness testing of paint trial coatings is mainly done manually using handheld wheel gauges, which require manual cleaning afterward, resulting in low efficiency for batch testing. Summary of the Invention

[0004] The purpose of this invention is to provide a test coating thickness detection device for polyester resin coating production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A test coating thickness detection device for polyester resin coating production includes an annular conveyor frame on which multiple test coating blocks are conveyed. The annular conveyor frame is equipped with a spraying and cleaning mechanism and a lifting assembly. The lifting assembly rises from the bottom of the annular conveyor belt and lifts the test coating blocks. A wet film detection mechanism is located on the upper side of the lifting assembly. The wet film detection mechanism includes a vertically mounted, lifting frame, and a swing frame rotatably mounted on the vertical frame. A connecting frame is located at the bottom of the swing frame, and a wheel gauge is rotatably mounted within the connecting frame. A drive wheel is provided inside the connecting frame, and a drive motor is connected to the drive wheel. An arc-shaped shaft groove is provided on the connecting frame. The rotation axis of the drive wheel is slidably fitted with the arc-shaped shaft groove. Arc-shaped connecting grooves are provided on both sides of the arc-shaped shaft groove. A mating post is provided at the end of the drive motor. The mating post and the arc-shaped connecting groove are mutually fitted. When the vertical frame is raised to the highest point, the wheel gauge is disengaged from the surface of the test coating block, and the drive wheel slides along the arc-shaped shaft groove and contacts the edge of the wheel gauge. A spray head is also provided on the connecting frame.

[0006] As a further embodiment of the present invention: an inclined frame is provided on the side of the connecting frame, the nozzle is fixedly connected to the inclined frame, and the nozzle is provided with a first connector and a second connector. The first connector is connected to a cleaning agent cylinder, and the second connector is connected to an air pump.

[0007] As a further embodiment of the present invention: the bottom of the test coating block is provided with an opening groove, the lifting component includes a mounting frame, the mounting frame is fixedly installed at the bottom of the annular conveyor frame, a lifting cylinder is provided on the mounting frame, the lifting cylinder is connected to a lifting plate, the edge of the lifting plate is provided with a plug-in post, the plug-in post is plugged into the mounting frame, and multiple connecting rods are evenly provided on the surface of the lifting plate, the ends of the connecting rods pass through the annular conveyor frame and cooperate with the opening groove at the bottom of the test coating block.

[0008] As a further embodiment of the present invention: the wet film detection mechanism is connected to a capture assembly, the capture assembly includes two sets of L-shaped frames suspended and installed, a capture rod is clamped at the end of the L-shaped frame, a rubber sleeve is sleeved at the end of the capture rod, the capture rod is clamped to the edge of the test coating block through the rubber sleeve, a horizontal frame is horizontally inserted between the two sets of L-shaped frames, a detection frame is set on the horizontal frame, a second lifting cylinder is installed on the detection frame, and the second lifting cylinder is connected to the vertical frame.

[0009] As a further embodiment of the present invention: the two ends of the horizontal frame extend out of the L-shaped frame, and the ends of the L-shaped frame are symmetrically provided with plug-in rods, which are plugged into each other with the L-shaped frame, and a support spring is sleeved on the plug-in rod.

[0010] As a further embodiment of the present invention: the capturing component is connected to a lifting control mechanism, the lifting control mechanism includes a top frame disposed above the lifting component, the top frame is fixedly installed, a second lifting motor is disposed on the top frame, the second lifting motor is connected to a lifting frame, a bidirectional screw is rotatably mounted on the lifting frame, the bidirectional screw is connected to a screw motor, a mating slider is threadedly connected to the bidirectional screw, the mating slider is slidably installed between the mating slider and the lifting frame, and the top of the L-shaped frame is fixedly connected to the mating slider.

[0011] As a further embodiment of the present invention: the wheel gauge includes concentric disks arranged on both sides, the concentric disks are provided with scale lines on their sides, the concentric disks are provided with an eccentric disk in the middle, the drive wheels are provided in two sets, the two sets of drive wheels correspond to the concentric disks, when the vertical frame is raised to the highest point, the drive wheels are in contact with the edge of the concentric disks, when the vertical frame is at the lowest point, the distance the wheel gauge moves on the surface of the test coating block is equal to half the circumference of the concentric disks, and when the vertical frame is at the lowest point, the axis of the drive wheel is located at the end of the arc-shaped shaft groove away from the concentric disks.

[0012] As a further embodiment of the present invention: the spraying and cleaning mechanism includes a spraying head and a cleaning head mounted on a ring conveyor frame. The edge of the ring conveyor frame is provided with two sets of connecting slide rails, and a connecting plate is slidably mounted on each of the two sets of connecting slide rails. A lifting motor is provided on the connecting plate, and the lifting motor is connected to an electromagnetic adsorption frame and an extension frame. An electromagnetic adsorption frame is provided at the end of the extension frame. A translation slider is slidably mounted on the connecting plate. The spraying head and the cleaning head are respectively mounted on the translation sliders of the two connecting plates. A drive screw is threaded between the two sets of translation sliders. The spraying head is connected to a paint bucket, and the cleaning head is connected to a cleaning agent cylinder and an air pump.

[0013] As a further embodiment of the present invention: the upper end of the swing frame extends to the other side of the vertical frame, and a limit rod is provided at the upper end of the swing frame.

[0014] As a further embodiment of the present invention, a one-way valve is provided inside the first connector and the second connector.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention sets a nozzle to point at the contact part between the drive wheel and the wheel gauge. After the wet film thickness is obtained after the measurement is completed, the vertical frame is raised to the highest position. At this time, the drive wheel and the concentric disk of the wheel gauge are in contact with each other. The drive motor drives the drive wheel and the wheel gauge to rotate synchronously. The nozzle sprays cleaning agent onto the contact part between the wheel gauge and the drive wheel to clean the coating on the edge of the wheel gauge and the drive wheel. After the cleaning is completed, the nozzle continues to pass a high-speed airflow to the part to dry the surface of the wheel gauge and wait for the next wet film thickness test.

[0016] (2) This invention sets multiple connecting rods to contact the bottom of the test coating block. To prevent potential deviation of the test coating block, an opening groove is provided at the bottom of the test coating block. When there is a slight deviation between the test coating block and the connecting rods, the opening groove allows the test coating block to automatically adjust to the standard testing position. A lifting cylinder is used to raise the connecting rods, lifting the test coating block on the annular conveyor frame. The wet film thickness on the test coating block is then detected using a wet film detection mechanism.

[0017] (3) In this invention, the vertical frame is raised and lowered by the second lifting cylinder, thereby controlling the wheel gauge to roll and detect on the surface of the test coating block. The lifting stroke of the vertical frame is just enough to drive the wheel gauge to move half the circumference of the concentric disk on the surface of the test coating block. Combined with the drive wheel, the wheel gauge starts rolling and detecting at the maximum scale, thus enabling the wheel gauge to detect the wet film thickness in the shortest distance. At the same time, an arc-shaped shaft groove is set on the connecting frame. When the swing frame tilts and the wheel gauge starts to detect, the drive wheel and the drive motor slide along the arc-shaped shaft groove and the arc-shaped connecting groove under the action of gravity. The drive wheel and the wheel gauge are disengaged, avoiding increasing the resistance of the wheel gauge and ensuring that the wheel gauge can successfully detect the thickness. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the installation of the wet film detection mechanism in this invention.

[0020] Figure 3 This is a schematic diagram of the installation of the capture component in this invention.

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0022] Figure 5 This is a schematic diagram of the wet film detection mechanism in this invention.

[0023] Figure 6 This is a schematic diagram of the disassembled structure of the drive wheel and the connecting frame in this invention.

[0024] Figure 7 This is a schematic diagram of the nozzle installation structure in this invention.

[0025] Figure 8 This is a schematic diagram of the bottom structure of the test coating block in this invention.

[0026] Figure 9 This is a schematic diagram of the wheel gauge structure in this invention.

[0027] Figure 10 This is a schematic diagram of the connection structure between the spraying and cleaning mechanism and the annular conveyor frame in this invention.

[0028] Figure 11 This is a schematic diagram of the spray cleaning mechanism in this invention.

[0029] In the diagram: 1. Circular conveyor frame; 2. Test coating block; 20. Opening slot; 3. Spraying and cleaning mechanism; 30. Spray head; 31. Cleaning head; 32. Connecting slide rail; 33. Connecting plate; 34. Lifting motor one; 35. Electromagnetic adsorption frame one; 36. Extension frame; 37. Electromagnetic adsorption frame two; 38. Translation slider; 39. Drive screw; 4. Lifting assembly; 40. Mounting frame; 41. Lifting cylinder one; 42. Insertion column; 43. Connecting rod; 5. Lifting control mechanism; 50. Top frame; 51. Lifting motor two; 52. Lifting frame; 54. Screw motor; 55. Bidirectional screw; 6. Snap-in mechanism. Components; 60. L-shaped frame; 61. Capturing rod; 62. Rubber sleeve; 63. Horizontal frame; 630. Insert rod; 631. Support spring; 64. Cleaning agent cylinder; 65. Air pump; 66. Detection frame; 67. Lifting cylinder II; 7. Wet film detection mechanism; 70. Vertical frame; 71. Swing frame; 72. Limiting rod; 73. Connecting frame; 730. Arc-shaped shaft groove; 731. Arc-shaped connecting groove; 74. Wheel gauge; 740. Concentric disc; 741. Eccentric disc; 75. Drive wheel; 76. Nozzle; 760. Connector I; 761. Connector II; 77. Drive motor; 78. Mating column. Detailed Implementation

[0030] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "a" and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "a" or "two" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0034] Example 1: like Figure 1 , Figure 2 , Figures 5-7 As shown, a test coating thickness detection device for polyester resin coating production includes an annular conveyor frame 1, on which multiple test coating blocks 2 are conveyed. The annular conveyor frame 1 is equipped with a spraying and cleaning mechanism 3 and a lifting assembly 4. The lifting assembly 4 rises from the bottom of the annular conveyor belt and lifts the test coating blocks 2. A wet film detection mechanism 7 is located on the upper side of the lifting assembly 4. The wet film detection mechanism 7 includes a vertically mounted lifting frame 70, on which a swing frame 71 is rotatably mounted. A connecting frame 73 is located at the bottom of the swing frame 71, and a wheel gauge 74 is rotatably mounted within the connecting frame 73. The connecting frame 73 also contains... A drive wheel 75 is provided, and a drive motor 77 is connected to the drive wheel 75. An arc-shaped shaft groove 730 is provided on the connecting frame 73. The rotation axis of the drive wheel 75 is slidably fitted with the arc-shaped shaft groove 730. Arc-shaped connecting grooves 731 are provided on both sides of the arc-shaped shaft groove 730. A mating post 78 is provided at the end of the drive motor 77. The mating post 78 and the arc-shaped connecting groove 731 are mutually fitted. When the vertical frame 70 is raised to the highest point, the wheel gauge 74 is disengaged from the surface of the test coating block 2, and the drive wheel 75 slides along the arc-shaped shaft groove 730 and contacts the edge of the wheel gauge 74. A spray head 76 is also provided on the connecting frame 73.

[0035] Specifically, the thickness of the wet film is measured using a wheel gauge 74. The thickness measurement principle of the wheel gauge 74 is based on the height difference between the concentric disk 740 and the eccentric disk 741. The concentric disks 740 on both sides are exactly the same size and are installed coaxially and concentrically. The outer ring of the concentric disk 740 is used as a reference surface and is pressed smoothly on the surface of the test coating block 2 when it rolls. The eccentric disk 741 in the middle has a highest point and a lowest point when it rotates. When the wheel gauge 74 rolls, the height of the edge of the eccentric disk 741 relative to the outer ring of the concentric disk 740 is constantly changing. Based on this principle, scale lines are set on the outer ring of the concentric disk 740. These scale lines correspond to the height difference between the middle eccentric disk 741 and the two concentric disks 740 at different positions.

[0036] When using the wheel gauge 74 to roll and measure the surface of the test coating block 2, the point where the wet film thickness equals the height difference of the wheel gauge 74 is found. When the wet film contacts the central eccentric disk 741, the scale value corresponding to that point is the wet film thickness. Based on this principle, the wheel gauge 74 is used to measure the wet film thickness on the surface of the test coating block 2. As the test coating block 2 moves between the annular conveyor frames 1, its surface is first cleaned and dried by the spray cleaning mechanism 3, and then coated. After spraying, the test coating block 2 reaches the lifting assembly 4, which lifts it up. The wet film detection mechanism 7 then measures the thickness. By controlling the vertical frame 70 to gradually descend, the wheel gauge 74 contacts the surface of the test coating block 2 and then slowly rolls along the wet film on the surface of the test coating block 2 to measure. After rolling, the wet film thickness is obtained by observing the point where the coating contacts the central eccentric disk 741.

[0037] Because the wheel gauge 74 needs to roll from the maximum scale to the zero scale during testing, this avoids the eccentric disk 741 in the middle of the wheel gauge 74 pushing against the coating on the surface of the test block 2, thus affecting the testing accuracy. Therefore, before each test, the wheel gauge 74 needs to be controlled to the maximum scale state. By setting a drive wheel 75 on the connecting frame 73, when the drive wheel 75 contacts the concentric disk 740 of the wheel gauge 74, the drive wheel 75 rotates synchronously, driving the wheel gauge 74 to rotate, thereby adjusting the wheel gauge 74 to the maximum scale position. When the wheel gauge 74 measures the test block 2, it will start measuring the wet film thickness from the maximum scale.

[0038] It should be noted that, in order to achieve rapid batch testing of wheel gauge 74, after the measurement of wheel gauge 74 is completed, a cleaning agent specially used for cleaning coatings is sprayed onto the surface of wheel gauge 74 through nozzle 76. After cleaning, high-speed airflow is sprayed onto the surface of wheel gauge 74 through nozzle 76 to facilitate wheel gauge 74 to quickly enter the next round of wet film thickness testing.

[0039] Furthermore, such as Figure 5 , Figure 7 As shown, the side of the connecting frame 73 is provided with an inclined frame, the nozzle 76 is fixedly connected to the inclined frame, and the nozzle 76 is provided with a first connector 760 and a second connector 761. The first connector 760 is connected to a cleaning agent cylinder 64 through a pipe, and the second connector 761 is connected to an air pump 65 through a pipe.

[0040] Specifically, the nozzle 76 is directed at the contact area between the drive wheel 75 and the wheel gauge 74. After the wet film thickness is measured, the vertical frame 70 is raised to its highest position. At this time, the drive wheel 75 and the concentric disk 740 of the wheel gauge 74 are in contact with each other. The drive motor 77 drives the drive wheel 75 and the wheel gauge 74 to rotate synchronously. The nozzle 76 sprays cleaning agent onto the contact area between the wheel gauge 74 and the drive wheel 75 to clean the coating on the edges of the wheel gauge 74 and the drive wheel 75. After cleaning, a high-speed airflow is continued to be directed to this area through the nozzle 76 to dry the surface of the wheel gauge 74, ready for the next wet film thickness test.

[0041] Furthermore, such as Figure 2 , Figure 8 As shown, the bottom of the test coating block 2 is provided with an opening groove 20. The opening groove 20 is sloping on all four sides and has an overall truncated cone shape with a smaller top and a larger bottom. The diameter gradually narrows from bottom to top. The lifting component 4 includes a mounting frame 40, which is fixedly installed at the bottom of the annular conveyor frame 1. A lifting cylinder 41 is provided on the mounting frame 40. The lifting cylinder 41 is connected to a lifting plate. The edge of the lifting plate is provided with a plug-in post 42. The plug-in post 42 is plugged into the mounting frame 40. Multiple connecting rods 43 are evenly provided on the surface of the lifting plate. The ends of the connecting rods 43 pass through the annular conveyor frame 1 and can form a sloping fit with the opening groove 20 at the bottom of the test coating block 2.

[0042] Specifically, to facilitate the lifting of the test coating block 2, multiple connecting rods 43 are installed to contact the bottom of the test coating block 2. To prevent potential deviation of the test coating block 2, an opening groove 20 is provided at the bottom of the test coating block 2. When there is a slight deviation between the test coating block 2 and the connecting rods 43, the inclined structure around the opening groove 20 can guide the test coating block 2 to automatically slide to the standard detection position from various directions, achieving multi-directional correction and repositioning. A lifting cylinder is used to lift the connecting rods 43, raising the test coating block 2 on the annular conveyor frame 1. The wet film thickness on the test coating block 2 is then detected by the wet film detection mechanism 7.

[0043] Furthermore, such as Figure 2 , Figure 3 As shown, the wet film detection mechanism 7 is connected to a capture assembly 6. The capture assembly 6 includes two sets of L-shaped frames 60 suspended in place. A capture rod 61 is clamped at the end of each L-shaped frame 60. A rubber sleeve 62 is fitted onto the end of each capture rod 61. The capture rod 61 is clamped to the edge of the test coating block 2 through the rubber sleeve 62. A horizontal frame 63 is horizontally inserted between the two sets of L-shaped frames 60. A detection frame 66 is installed on the horizontal frame 63. A second lifting cylinder 67 is installed on the detection frame 66. The second lifting cylinder 67 is connected to the vertical frame 70.

[0044] Specifically, when the wheel gauge 74 rolls on the surface of the test coating block 2, in order to prevent the test coating block 2 from shifting or slipping off the docking rod 43 due to the rolling of the wheel gauge 74, two sets of L-shaped frames 60 are set up, and a capture rod 61 is set up in conjunction with the L-shaped frames 60. The capture rod 61 limits the two sides of the test coating block 2 to ensure the stability of the wheel gauge 74 when it rolls on the surface of the test coating block 2 for testing.

[0045] Furthermore, such as Figure 4 As shown, the two ends of the horizontal frame 63 extend through the L-shaped frame 60. The ends of the L-shaped frame 60 are symmetrically provided with plug-in rods 630. The plug-in rods 630 and the L-shaped frame 60 are plugged into each other. A support spring 631 is sleeved on the plug-in rod 630.

[0046] Specifically, plug-in rods 630 and support springs 631 are set on both sides of the horizontal frame 63. When the L-shaped frame 60 adjusts the spacing, the horizontal frame 63 can always be kept in the center, so that the wet film detection mechanism 7 is always on the upper side of the test coating block 2, ensuring that the capture component 6 can successfully capture and position the test coating block 2, and at the same time ensuring that the wheel gauge 74 can successfully perform wet film thickness detection.

[0047] Furthermore, such as Figure 1 , Figure 2 As shown, the capturing component 6 is connected to the lifting control mechanism 5. The lifting control mechanism 5 includes a top frame 50 disposed above the lifting component 4. The top frame 50 is fixedly installed. A second lifting motor 51 is disposed on the top frame 50. The second lifting motor 51 is connected to a lifting frame 52. A bidirectional screw 55 is rotatably mounted on the lifting frame 52. The bidirectional screw 55 is connected to a screw motor 54. The screw motor 54 is mounted on the lifting frame 52. A mating slider is threadedly connected to the bidirectional screw 55. The mating slider is slidably installed between the sliding frame 52 and the top of the L-shaped frame 60 is fixedly connected to the mating slider.

[0048] Furthermore, such as Figure 5 As shown, the upper end of the swing frame 71 extends to the other side of the vertical frame 70, and a limit rod 72 is provided at the upper end of the swing frame 71.

[0049] Specifically, the function of the limit rod 72 is to ensure that when the vertical frame 70 is at its highest position, the swing frame 71 remains stationary in an inclined state. This ensures that during testing, the swing direction of the swing frame 71 is always from left to right (e.g., ...). Figure 3 (As shown), to prevent the swing frame 71 from causing the wheel gauge 74 to swing to the other side, which would lead to detection failure.

[0050] Furthermore, a one-way valve is provided inside both connector 760 and connector 761.

[0051] Specifically, a single nozzle 76 is set up and connected to connector 1 760 and connector 2 761 respectively with a one-way valve. In this way, the wheel gauge 74 can be cleaned and dried by a single nozzle 76, thereby simplifying the cleaning structure of the wheel gauge 74.

[0052] Example 2: This embodiment is a further improvement and limitation on Embodiment 1 based on Embodiment 1.

[0053] An embodiment including all the components in Example 1, further comprising: Furthermore, such as Figure 3 , Figure 5 , Figure 9 As shown, the wheel gauge 74 includes concentric disks 740 on both sides, with scale lines on the sides of the concentric disks 740 and an eccentric disk 741 in the middle of the concentric disks 740. Two sets of drive wheels 75 are provided, with the two sets of drive wheels 75 corresponding to the concentric disks 740. When the vertical frame 70 is raised to its highest point, the drive wheels 75 are in contact with the edge of the concentric disks 740. When the vertical frame 70 is at its lowest point, the distance that the wheel gauge 74 moves on the surface of the test block 2 is equal to half the circumference of the concentric disks 740. When the vertical frame 70 is at its lowest point, the axis of the drive wheel 75 is located at the end of the arc-shaped shaft groove 730 away from the concentric disks 740.

[0054] Specifically, the vertical frame 70 is raised and lowered by the lifting cylinder 67, thereby controlling the wheel gauge 74 to roll and detect on the surface of the test coating block 2. The lifting stroke of the vertical frame 70 can drive the wheel gauge 74 to move half the circumference of the concentric disk 740 on the surface of the test coating block 2. Combined with the drive wheel 75, the wheel gauge 74 starts rolling and detecting at the maximum scale, thereby enabling the wheel gauge 74 to detect the wet film thickness in the shortest distance. Meanwhile, an arc-shaped shaft groove (730) is provided on the connecting frame 73, and arc-shaped connecting grooves 731 are provided on both sides of the arc-shaped shaft groove 730. The mating post 78 at the end of the drive motor 77 is embedded in the arc-shaped connecting groove 731 to form a sliding fit. When the swing frame 71 tilts the wheel gauge 74 to start detection, the drive wheel 75 and the drive motor 77 slide along the arc-shaped shaft groove (730) and the arc-shaped connecting groove 731 under the action of gravity. The mating post 78 plays a guiding and limiting role, ensuring that the drive wheel 75 slides smoothly along the preset trajectory while preventing the drive motor 77 from deflecting or falling off. The drive wheel 75 and the wheel gauge 74 are separated from each other to avoid increasing the resistance of the wheel gauge 74 and ensure that the wheel gauge 74 can perform thickness detection smoothly.

[0055] Furthermore, such as Figure 1 , Figure 10 , Figure 11As shown, the spraying and cleaning mechanism 3 includes a spraying head 30 and a cleaning head 31 mounted on a ring conveyor frame 1. Two sets of connecting slide rails 32 are provided on the edge of the ring conveyor frame 1. A connecting plate 33 is slidably mounted on each of the two sets of connecting slide rails 32. A lifting motor 34 is provided on the connecting plate 33. The lifting motor 34 is connected to an electromagnetic adsorption frame 35 and an extension frame 36. An electromagnetic adsorption frame 37 is provided at the end of the extension frame 36. A translation slider 38 is slidably mounted on the connecting plate 33. The spraying head 30 and the cleaning head 31 are respectively mounted on the translation sliders 38 of the two connecting plates 33. A drive screw 39 is threaded between the two sets of translation sliders 38. The spraying head 30 is connected to a paint bucket through a pipe. The cleaning head 31 is connected to a cleaning agent cylinder 64 and an air pump 65 through a pipe.

[0056] Specifically, before testing, the coating on the surface of test block 2 is cleaned by cleaning head 31. The coating is decomposed and rinsed with a corresponding cleaning agent, and finally the surface is dried by air pump 65 to avoid defects in subsequent coating spraying that could affect the wet film thickness test. After cleaning, test block 2 enters the spray head 30 and is sprayed with coating from the coating bucket. It is then sent to the testing station via the ring conveyor 1. Test block 2 is used cyclically with the ring conveyor 1 to test the coating thickness of different batches of coating.

[0057] Lifting motor 34 drives electromagnetic adsorption frame 35 and electromagnetic adsorption frame 37 to move up and down synchronously. During descent, electromagnetic adsorption frame 35 and electromagnetic adsorption frame 37 respectively adsorb the two test coating blocks 2 and prevent the test coating blocks 2 from moving continuously along the annular conveyor frame 1. This facilitates control of the spacing between the test coating blocks 2, thereby ensuring that the lifting component 4 can lift and inspect the test coating blocks 2 at the same time intervals during batch testing. Alternatively, a vision inspection device can be used to lift the test coating blocks 2, thus eliminating the need to control the conveyor spacing of the test coating blocks 2.

[0058] The working principle of this invention embodiment is as follows: like Figures 1-11As shown, before testing, the control wheel gauge 74 is in the maximum scale state. By setting a drive wheel 75 on the connecting frame 73, when the drive wheel 75 and the concentric disk 740 of the wheel gauge 74 come into contact with each other, the drive wheel 75 rotates synchronously and drives the wheel gauge 74 to rotate, thereby adjusting the wheel gauge 74 to the maximum scale position. When the wheel gauge 74 measures the test coating block 2, it will start measuring the wet film thickness from the maximum scale. The nozzle 76 is positioned at the contact point between the drive wheel 75 and the wheel gauge 74. After the wet film thickness measurement is completed, the vertical frame 70 is raised to its highest position. At this point, the drive wheel 75 and the concentric disc 740 of the wheel gauge 74 are in contact. The drive motor 77 drives the drive wheel 75 and the wheel gauge 74 to rotate synchronously. The nozzle 76 sprays cleaning agent onto the contact point between the wheel gauge 74 and the drive wheel 75, cleaning the coating on the edges of the wheel gauge 74 and the drive wheel 75. The cleaning agent is collected and centrally processed by a receiving device. The specific configuration of the receiving device is not shown in the attached diagram; it can be flexibly configured as needed. After cleaning, a high-speed airflow continues to be directed through the nozzle 76 to this area to dry the surface of the wheel gauge 74, preparing it for the next wet film thickness measurement. To facilitate the lifting of the test coating block 2, multiple connecting rods 43 are installed to contact the bottom of the test coating block 2. To prevent potential misalignment of the test coating block 2, an opening groove 20 is provided at the bottom of the test coating block 2. When there is a slight deviation between the test coating block 2 and the connecting rods 43, the opening groove 20 allows the test coating block 2 to automatically adjust to the standard testing position. A lifting cylinder drives the connecting rods 43 to lift the test coating block 2 on the annular conveyor frame 1. The wet film thickness on the test coating block 2 is then detected by the wet film detection mechanism 7. Specifically, the vertical frame 70 is raised and lowered by a lifting cylinder 67, which controls the wheel gauge 74 to roll and detect on the surface of the test coating block 2. The lifting stroke of the vertical frame 70 is just enough to move the wheel gauge 74 along half the circumference of the concentric disk 740 on the surface of the test coating block 2. Combined with the drive wheel 75, the wheel gauge 74 starts rolling and detecting at its maximum scale, thus enabling the wheel gauge 74 to detect the wet film thickness in the shortest distance. Meanwhile, an arc-shaped shaft groove (730) is provided on the connecting frame 73. When the swing frame 71 tilts the wheel gauge 74 to start detection, the drive wheel 75 and the drive motor 77 slide along the arc-shaped shaft groove (730) and the arc-shaped connecting groove 731 under the action of gravity. The drive wheel 75 and the wheel gauge 74 are disengaged, so as to avoid increasing the resistance of the wheel gauge 74 and ensure that the wheel gauge 74 can perform thickness detection smoothly.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test coating thickness detection device for polyester resin coating production, comprising an annular conveyor frame (1), wherein multiple test coating blocks (2) are conveyed on the annular conveyor frame (1), characterized in that, The annular conveyor (1) is equipped with a spraying and cleaning mechanism (3) and a lifting component (4). The lifting component (4) rises from the bottom of the annular conveyor belt and lifts the test coating block (2). A wet film detection mechanism (7) is provided on the upper side of the lifting component (4). The wet film detection mechanism (7) includes a vertically mounted frame (70) with a swing frame (71) rotatably mounted on the vertical frame (70). A connecting frame (73) is provided at the bottom end of the swing frame (71). A wheel gauge (74) is rotatably mounted inside the connecting frame (73). A drive wheel (75) is provided inside the connecting frame (73). A drive motor (77) is connected to the drive wheel (75). An arc-shaped shaft groove (730) is provided on the connecting frame (73). The rotation axis of the drive wheel (75) is parallel to the arc-shaped shaft groove (730). The components are installed in a sliding fit between the two sides of the arc-shaped shaft groove (730). Arc-shaped connecting grooves (731) are provided on both sides of the arc-shaped shaft groove (730). The end of the drive motor (77) is provided with a mating column (78). The mating column (78) and the arc-shaped connecting groove (731) are mated to each other. When the vertical frame (70) is raised to the highest point, the wheel gauge (74) is disengaged from the surface of the test coating block (2). The drive wheel (75) slides along the arc-shaped shaft groove (730) and contacts the edge of the wheel gauge (74). A nozzle (76) is also provided on the connecting frame (73).

2. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 1, characterized in that, The side of the connecting frame (73) is provided with an inclined frame, the nozzle (76) is fixedly connected to the inclined frame, and the nozzle (76) is provided with a first connector (760) and a second connector (761). The first connector (760) is connected to a cleaning agent cylinder (64), and the second connector (761) is connected to an air pump (65).

3. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 1, characterized in that, The bottom of the test coating block (2) is provided with an opening groove (20). The lifting component (4) includes a mounting frame (40). The mounting frame (40) is fixedly installed at the bottom of the annular conveyor frame (1). A lifting cylinder (41) is provided on the mounting frame (40). The lifting cylinder (41) is connected to a lifting plate. The edge of the lifting plate is provided with a plug-in post (42). The plug-in post (42) is plugged into the mounting frame (40). Multiple connecting rods (43) are evenly provided on the surface of the lifting plate. The end of the connecting rod (43) passes through the annular conveyor frame (1) and cooperates with the opening groove (20) at the bottom of the test coating block (2).

4. The device for detecting the thickness of a test coating layer in polyester resin coating production according to claim 1, characterized in that, The wet film detection mechanism (7) is connected to a capture assembly (6). The capture assembly (6) includes two sets of L-shaped frames (60) suspended and installed. A capture rod (61) is clamped at the end of the L-shaped frame (60). A rubber sleeve (62) is sleeved at the end of the capture rod (61). The capture rod (61) is clamped to the edge of the test coating block (2) through the rubber sleeve (62). A horizontal frame (63) is horizontally inserted between the two sets of L-shaped frames (60). A detection frame (66) is set on the horizontal frame (63). A second lifting cylinder (67) is installed on the detection frame (66). The second lifting cylinder (67) is connected to the vertical frame (70).

5. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 4, characterized in that, The horizontal frame (63) has two ends extending through the L-shaped frame (60). The ends of the L-shaped frame (60) are symmetrically provided with plug-in rods (630). The plug-in rods (630) are plugged into each other with the L-shaped frame (60). A support spring (631) is sleeved on the plug-in rods (630).

6. The test coating thickness detection device for polyester resin coating production according to claim 4, characterized in that, The capture component (6) is connected to the lifting control mechanism (5). The lifting control mechanism (5) includes a top frame (50) set above the lifting component (4). The top frame (50) is fixedly installed. A second lifting motor (51) is set on the top frame (50). The second lifting motor (51) is connected to a lifting frame (52). A bidirectional screw (55) is rotatably installed on the lifting frame (52). A screw motor (54) is connected to the bidirectional screw (55). A matching slider is threaded on the bidirectional screw (55). The matching slider is slidably installed between the matching slider and the lifting frame (52). The top of the L-shaped frame (60) is fixedly connected to the matching slider.

7. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 1, characterized in that, The wheel gauge (74) includes concentric discs (740) on both sides. The concentric discs (740) have scale lines on their sides. An eccentric disc (741) is provided in the middle of the concentric discs (740). There are two sets of drive wheels (75). The two sets of drive wheels (75) correspond to the concentric discs (740). When the vertical frame (70) is raised to the highest point, the drive wheels (75) are in contact with the edge of the concentric discs (740). When the vertical frame (70) is at the lowest point, the distance that the wheel gauge (74) moves on the surface of the test coating block (2) is equal to half the circumference of the concentric discs (740). When the vertical frame (70) is at the lowest point, the axis of the drive wheel (75) is located at the end of the arc-shaped shaft groove (730) away from the concentric discs (740).

8. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 1, characterized in that, The spraying and cleaning mechanism (3) includes a spraying head (30) and a cleaning head (31) set on a ring conveyor frame (1). The edge of the ring conveyor frame (1) is provided with two sets of connecting slide rails (32). A connecting plate (33) is slidably installed on both sets of connecting slide rails (32). A lifting motor (34) is provided on the connecting plate (33). The lifting motor (34) is connected to an electromagnetic adsorption frame (35) and an extension frame (36). An electromagnetic adsorption frame (37) is provided at the end of the extension frame (36). A translation slider (38) is slidably installed on the connecting plate (33). The spraying head (30) and the cleaning head (31) are respectively installed on the translation sliders (38) of the two connecting plates (33). A drive screw (39) is threaded between the two sets of translation sliders (38). The spraying head (30) is connected to a paint bucket. The cleaning head (31) is connected to a cleaning agent cylinder (64) and an air pump (65).

9. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 1, characterized in that, The upper end of the swing frame (71) extends to the other side of the vertical frame (70), and a limit rod (72) is provided at the upper end of the swing frame (71).

10. The device for detecting the thickness of a test coating for polyester resin coating production according to claim 2, characterized in that, One-way valves are provided inside the first connector (760) and the second connector (761).

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