A UV varnish curing degree detection device

Abstract

The present invention provides a UV varnish curing degree detection device, which belongs to the technical field of ink coating detection, and includes a detection device body and a traveling wheel symmetrically arranged at the bottom of the detection device body, and also includes: a surface detection mechanism, which is arranged below the detection device body, and emits ultraviolet light through an ultraviolet detection lamp arranged inside the surface detection mechanism to irradiate and detect the UV oil coating. This invention applies ultraviolet light to the coating, and while strengthening the irradiation of the coating, uses a reflection detection plate to measure the degree of ultraviolet reflection absorption, and combines the flatness detection mechanism to simultaneously perform flatness detection on the coating area, which can effectively distinguish between incomplete curing of the coating and uneven and peeling phenomena of the coating, automatically make detection and analysis, and automatically mark the water-based ink droplets sprayed on the incompletely cured area of ​​the coating, so as to facilitate the later enhanced light treatment.

Description

Technical Field

[0001] The invention relates to the technical field of ink coating detection, in particular to a device for detecting the curing degree of UV varnish. Background Art

[0002] UV varnish is a coating that cures quickly through ultraviolet rays. It is composed of synthetic resins, curing agents, solvents and pigments, and has the characteristics of high gloss, high transparency and wear resistance. After coating, UV varnish is exposed to ultraviolet rays to trigger the reaction between the varnish and the curing agent, achieving rapid curing. It is widely used in printing, coating, decoration, wood products, plastic products and other industries to provide high-quality and efficient coating effects.

[0003] Prior art publication number CN202433351U discloses a device for detecting the curing degree of varnish on the surface of a hose, comprising a base plate, a horizontal reference plate rotatably mounted on the base plate and rotatable relative to the base plate in a vertical plane, an angle gauge for measuring the inclination angle of the horizontal reference plate relative to the horizontal plane, and a hose limiting structure for mounting the hose to be inspected on the horizontal reference plate. The device for detecting the curing degree of varnish on the surface of a hose measures the rotation inclination angle of the horizontal reference plate relative to the base plate through the angle gauge, and can determine whether the inclination angle is within a certain angle range to determine whether the curing degree of the varnish on the surface of the hose is qualified after curing, thereby ensuring that the hose has a qualified smoothness and avoiding the inability of the hose to slide relative to the base plate due to insufficient smoothness, thereby affecting the customer's filling operation;

[0004] The existing technical solutions still have certain limitations. The existing technology mainly uses the high smoothness of the varnish after overall curing as the basis for judging the degree of curing. However, in the actual detection process, the UV varnish has a fast overall curing speed when exposed to light, but sometimes there will be differences in the ratio of the coating, the coating is not completely dispersed, or the photoinitiator in the UV varnish is aged, resulting in low light efficiency in local areas of the varnish coating, slow curing speed, and long-term irradiation curing. The texture of the coating area that is not completely cured is soft, and it is easy to cause deformation and damage to the coating due to pressure and collision during handling and transportation, affecting the coating coating quality. Therefore, the overall detection method has certain limitations; in actual production, staff generally use hardness detection or refractive index detection, and use a hardness tester to detect surface hardness scratches or detect overall transmittance to determine the degree of curing, but the hardness tester is prone to scratches, affecting the coating quality; and when there is a problem with the UV coating formula or the photoinitiator is aged, it will cause differences in the internal curing speed. After curing, some areas are prone to crusting and bulging due to excessive drying time, affecting the refractive index efficiency and the results of the refractive index detection.

[0005] How to invent a UV varnish curing degree detection device to improve these problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0006] In order to make up for the above shortcomings, the present invention provides a UV varnish curing degree detection device, which aims to improve the problem that the existing technology has low accuracy in detecting the curing degree of varnish and is prone to damage the coating.

[0007] The present invention is achieved in that:

[0008] The present invention provides a UV varnish curing degree detection device, comprising a detection device body and a traveling wheel symmetrically arranged at the bottom of the detection device body, and further comprising:

[0009] The surface detection mechanism is arranged below the detection device body, and the UV oil coating is irradiated and detected by ultraviolet light emitted by the ultraviolet detection lamp arranged inside the surface detection mechanism, and the reflected light is received by the reflection detection plate arranged at the bottom of the detection device body. The curing degree of the UV oil coating can be judged according to the intensity of the reflected light, and the coating that is not completely cured is marked by discharging water-based ink through the marking port arranged at the bottom of the surface detection mechanism;

[0010] The flatness detection mechanism is arranged at the bottom of the surface detection mechanism. The flatness of the coating area passed by is detected by a lifting slider arranged at the bottom of the surface detection mechanism, and the concave-convex degree of the coating is magnified and detected by connecting the driving cavity and the connecting pipe opened inside the surface detection mechanism. The extension distance of the grinding disc arranged at the bottom of the detection device body is automatically adjusted according to the unevenness of the coating surface to grind and trim the coating.

[0011] Preferably, a reflection detection plate is fixedly installed at the bottom of the detection device body, a surface detection mechanism and a finishing mechanism are also fixedly installed at the bottom of the detection device body, a control center is arranged inside the detection device body, a plurality of groups of ultraviolet detection lamps are fixedly installed inside the side wall of the surface detection mechanism close to the reflection detection plate, an ink storage cavity is arranged inside the surface detection mechanism, a marking port for discharging liquid and marking is arranged at the bottom of the surface detection mechanism, a flow pipe for connecting the ink storage cavity and the marking port is arranged inside the surface detection mechanism, and a group of flow pipes for connecting the ink storage cavity and the marking port are also slidably connected inside the surface detection mechanism through a spring seal. A sealing magnetic block with a through pipe cut off, a group of electromagnets close to the sealing magnetic block are fixedly installed inside the surface detection mechanism, a flatness detection mechanism is also arranged at the bottom of the surface detection mechanism, the flatness detection mechanism includes a driving chamber opened at the bottom of the surface detection mechanism, the internal limit sealing of the driving chamber is movably sleeved with a group of lifting sliders with pulleys, a connecting pipe is opened inside the surface detection mechanism above the driving chamber, a group of concentrating pipes are also opened inside the surface detection mechanism, and the ends of the connecting pipes are connected and converged with the inside of the concentrating pipes, and the internal limit sealing sliding connection of the concentrating pipes is connected with a piston magnetic block.

[0012] Preferably, the internal cross-sectional area of ​​the driving cavity is much larger than the cross-sectional area of ​​the connecting pipe, and hydraulic oil for transmitting pressure is arranged inside the driving cavity, the connecting pipe and the central pipe between the lifting slider and the first magnetic block.

[0013] Preferably, the inside of the surface detection mechanism is elastically connected to a group of first magnetic blocks close to the middle of the concentrating tube through a group of limiting slide grooves and springs, and a group of first trigger switches are fixedly installed below the first magnetic blocks. The inside of the surface detection mechanism is elastically connected to multiple groups of evenly distributed second magnetic blocks through slide grooves and springs from the middle section of the concentrating tube toward the end of the concentrating tube, and a second trigger switch is arranged at the bottom of each group of second magnetic blocks.

[0014] Preferably, the magnetic poles of the piston magnet that is close to the first magnet and the second magnet are oppositely arranged, and the cross-sections of the central tube and the piston magnet are both elliptical, which can prevent the piston magnet from rotating when sliding inside the central tube.

[0015] Preferably, a group of connecting grooves are opened in the center of the sealing magnetic block in the same direction as the flow tube, and the magnetic poles on the side where the electromagnet and the sealing magnetic block are close to each other are arranged oppositely, and when the sealing magnetic block and the electromagnet are attracted to each other under the action of magnetic force, the connecting grooves inside the sealing magnetic block and the flow tube remain misaligned and disconnected.

[0016] Preferably, the side wall of the surface detection mechanism provided with the ultraviolet detection lamp is designed to be inclined, and the side wall of the surface detection mechanism is provided with a light grid for adjusting the angle of light emitted by the ultraviolet detection lamp.

[0017] Preferably, the trimming mechanism includes a height-adjusting motor arranged inside the detection device body, a threaded transmission rod is fixedly installed on the output end of the height-adjusting motor, a trimming slider is movably sleeved on the bottom limit of the detection device body, a driving motor is fixedly installed inside the trimming slider, an internal thread matching the threaded transmission rod is provided inside the trimming slider, and a threaded transmission connection is maintained between the threaded transmission rod, a group of fixed limiting light rods for auxiliary limiting are also arranged between the trimming slider and the detection device body, a plurality of grinding discs are rotatably connected to the bottom of the trimming slider through bearings, the transmission shafts of the grinding discs are transmission-connected through belts, and the transmission shaft of one group of grinding discs is fixedly connected to the driving motor, a liquid storage chamber is fixedly installed inside the trimming slider, and a liquid spray plate located in front of the forward direction of the grinding disc is also fixedly installed at the bottom of the trimming mechanism.

[0018] Preferably, the side wall of the liquid spray plate is provided with a spray hole facing the grinding disc, the inner cavity of the liquid storage chamber is connected with the spray hole of the liquid spray plate through a channel, a group of sealing slide grooves are provided at the bottom outlet of the liquid storage chamber, the internal limit sealing sliding connection of the sealing slide groove is provided with a sealing slider, a plurality of groups of vertically distributed channels are provided at the center of the sealing slider, a group of driving motors are arranged on the side wall of the sealing slide groove, and the output end of the driving motor maintains a threaded transmission connection with the inside of the sealing slider.

[0019] Preferably, the first trigger switch, the second trigger switch, the height adjustment motor, the drive motor, the ink storage chamber, the drive motor and the control center are electrically connected.

[0020] The beneficial effects of the present invention are:

[0021] This device applies ultraviolet light to the coating. While strengthening the irradiation of the coating, the reflection detection board measures the degree of ultraviolet reflection absorption, and combines the flatness detection mechanism to simultaneously detect the flatness of the coating area. It can effectively distinguish between incomplete curing of the coating and uneven coating peeling, automatically make detection and analysis, and automatically mark the area where the coating is not completely cured by spraying water-based ink droplets, which is convenient for later enhanced light treatment;

[0022] At the same time, the inkjet marking can be stopped for the detected uneven coating area, and automatic grinding and trimming can be carried out. The grinding lubricant can be automatically sprayed on the grinding area during grinding, and the spraying amount of the grinding solution can be adjusted according to the unevenness of the plate coating in the detection area. When the bumps and peeling are relatively minor, a small amount of grinding solvent can be sprayed to assist in grinding and trimming. When the bumps and peeling are more serious, more grinding solvent can be sprayed to assist in grinding and trimming. The right amount of lubricating solvent can not only effectively ensure the friction and grinding effect of the grinding disc on the grinding surface and avoid excessive lubrication, but also effectively cool the grinding area to prevent the temperature from being too high during UV coating grinding, causing the internal pigment of the coating to fade, the coating to become brittle as a whole, and the hardness to decrease, resulting in aggravated scratches and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall external structure of a UV varnish curing degree detection device provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of a UV varnish curing degree detection device provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure of a surface detection mechanism of a UV varnish curing degree detection device provided by an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of a surface detection mechanism of a UV varnish curing degree detection device provided by an embodiment of the present invention when the magnetic force of the electromagnet becomes smaller;

[0028] Figure 5 It is a schematic diagram of the overall structure of a trimming mechanism of a UV varnish curing degree detection device provided in an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of light reflection when the detection device body of a UV varnish curing degree detection device provided by an embodiment of the present invention passes through a flat coating area;

[0030] Figure 7 It is a schematic diagram of diffuse reflection of light when the detection device body of a UV varnish curing degree detection device provided by an embodiment of the present invention passes through an uneven coating area;

[0031] Figure 8 It is an overall schematic diagram of a surface detection mechanism of a UV varnish curing degree detection device provided by an embodiment of the present invention when the detection device body passes through an uneven area;

[0032] Fig. 9 It is a schematic diagram of the overall surface detection mechanism of a UV varnish curing degree detection device provided by an embodiment of the present invention when the detection device body passes through an area with a large degree of unevenness;

[0033] Fig.10 It is a schematic diagram of the internal structure of the bottom of a trimming slider and a liquid storage chamber of a UV varnish curing degree detection device provided by an embodiment of the present invention;

[0034] Fig.11 It is a schematic diagram of the internal structure of a liquid storage chamber of a UV varnish curing degree detection device provided in an embodiment of the present invention;

[0035] Fig.12 Embodiment of the present invention Fig.11 A magnified schematic diagram of point A;

[0036] Fig.13 It is a schematic diagram of a sealing slider of a UV varnish curing degree detection device provided by an embodiment of the present invention being displaced to the center of the bottom opening of a liquid storage chamber.

[0037] In the figure: 1. detection device body; 2. surface detection mechanism; 3. finishing mechanism; 4. reflection detection plate; 6. control center; 11. travel wheel; 21. illumination grid; 22. ultraviolet detection lamp; 23. flatness detection mechanism; 24. marking port; 25. ink storage chamber; 26. sealing magnetic block; 27. electromagnet; 28. circulation pipe; 31. height adjustment motor; 32. threaded transmission rod; 33. finishing slider; 34. driving motor; 35. grinding disc; 36. liquid storage chamber; 37. liquid spraying plate; 231. lifting slider; 232. driving chamber; 233. connecting pipe; 234. piston magnetic block; 235. centralizing pipe; 236. first magnetic block; 237. second magnetic block; 238. first trigger switch; 239. second trigger switch; 361. sealing slide; 362. sealing slider; 363. driving motor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example

[0040] Reference Figure 1-13 , a UV varnish curing degree detection device, comprising a detection device body 1 and a traveling wheel 11 symmetrically arranged at the bottom of the detection device body 1, and also comprising:

[0041] The surface detection mechanism 2 is arranged below the detection device body 1, and the UV oil coating is irradiated and detected by the ultraviolet light emitted by the ultraviolet detection lamp 22 arranged inside the surface detection mechanism 2, and the reflected light is received by the reflection detection plate 4 arranged at the bottom of the detection device body 1. The curing degree of the UV oil coating can be judged according to the intensity of the reflected light, and the uncured coating is marked by discharging water-based ink through the marking port 24 arranged at the bottom of the surface detection mechanism 2;

[0042] The flatness detection mechanism 23 is arranged at the bottom of the surface detection mechanism 2. The flatness of the coating area passed through is detected by the lifting slider 231 arranged at the bottom of the surface detection mechanism 2, and the unevenness of the coating is magnified and detected by connecting the driving cavity 232 and the connecting pipe 233 opened inside the surface detection mechanism 2. The extension distance of the grinding disc 35 arranged at the bottom of the detection device body 1 is automatically adjusted according to the unevenness of the coating surface to grind and trim the coating.

[0043] Reference Figure 1-4A reflection detection plate 4 is fixedly installed at the bottom of the detection device body 1, a surface detection mechanism 2 and a trimming mechanism 3 are also fixedly installed at the bottom of the detection device body 1, a control center 6 is arranged inside the detection device body 1, a plurality of groups of ultraviolet detection lamps 22 are fixedly installed inside the side wall of the surface detection mechanism 2 close to the reflection detection plate 4, an ink storage cavity 25 is provided inside the surface detection mechanism 2, a marking port 24 for draining and marking is provided at the bottom of the surface detection mechanism 2, a flow tube 28 for connecting the ink storage cavity 25 and the marking port 24 is provided inside the surface detection mechanism 2, and a group of sealing magnetic blocks 2 that cut off the flow tube 28 are also connected to the surface detection mechanism 2 through a spring seal sliding connection. 6. A group of electromagnets 27 close to the sealing magnetic block 26 are fixedly installed inside the surface detection mechanism 2. A flatness detection mechanism 23 is also arranged at the bottom of the surface detection mechanism 2. The flatness detection mechanism 23 includes a driving chamber 232 opened at the bottom of the surface detection mechanism 2. The internal limit seal of the driving chamber 232 is movably sleeved with a group of lifting sliders 231 with pulleys. A connecting pipe 233 is opened above the driving chamber 232 inside the surface detection mechanism 2. A group of centralizing pipes 235 are also opened inside the surface detection mechanism 2, and the ends of the connecting pipes 233 are connected and converged to the inside of the centralizing pipes 235. The internal limit seal of the centralizing pipes 235 is slidably connected with a piston magnetic block 234.

[0044] It should be noted that the electromagnet 27 and the reflection detection plate 4 are connected in series in the circuit. When the reflection detection plate 4 absorbs sufficient light intensity and causes a small resistance, the overall current of the circuit is relatively large, and the current flowing through the electromagnet 27 is also relatively large, which enables the electromagnet 27 to maintain sufficient magnetic force to attract the sealing magnetic block 26 toward the electromagnet 27. When the light intensity absorbed by the reflection detection plate 4 is low, the resistance of the reflection detection plate 4 is restored to a relatively large value, causing the current and magnetism of the electromagnet 27 to become smaller, causing the sealing magnetic block 26 to reset and restore the flow of the flow tube 28.

[0045] It should be noted that the outlet of the ink storage chamber 25 is provided with a solenoid valve, which remains closed when the device is not working to prevent ink leakage. The interior of the ink storage chamber 25 is filled with water-based marking ink, which not only makes the marking obvious but also makes it easy to rinse and clean later without covering or damaging the UV coating.

[0046] Furthermore, the internal cross-sectional area of ​​the driving chamber 232 is much larger than the cross-sectional area of ​​the connecting pipe 233 , and hydraulic oil for transmitting pressure is provided inside the driving chamber 232 , the connecting pipe 233 and the central pipe 235 between the lifting slider 231 and the first magnetic block 236 .

[0047] Furthermore, the interior of the surface detection mechanism 2 is elastically connected to a group of first magnetic blocks 236 close to the middle of the concentrating tube 235 through a group of limiting slide grooves and springs, and a group of first trigger switches 238 are fixedly installed below the first magnetic blocks 236. The interior of the surface detection mechanism 2 is elastically connected to multiple groups of evenly distributed second magnetic blocks 237 through slide grooves and springs from the middle section of the concentrating tube 235 toward the end of the concentrating tube 235, and a second trigger switch 239 is arranged at the bottom of each group of second magnetic blocks 237.

[0048] Furthermore, the magnetic poles of the piston magnet 234 and the first magnet 236 and the second magnet 237 that are close to each other are oppositely arranged, and the cross-sections of the central tube 235 and the piston magnet 234 are both elliptical, which can prevent the piston magnet 234 from rotating when sliding inside the central tube 235.

[0049] It should be noted that a group of connecting grooves are opened in the center of the sealing magnetic block 26 in the same direction as the flow tube 28, and the magnetic poles on the side close to the electromagnet 27 and the sealing magnetic block 26 are oppositely arranged, and when the sealing magnetic block 26 and the electromagnet 27 are attracted to each other under the action of magnetic force, the internal connecting grooves of the sealing magnetic block 26 and the flow tube 28 remain misaligned and disconnected.

[0050] Furthermore, the side wall of the surface detection mechanism 2 provided with the ultraviolet detection lamp 22 is designed to be inclined, and the side wall of the surface detection mechanism 2 is provided with a light grid 21 for adjusting the angle of light emitted by the ultraviolet detection lamp 22;

[0051] It should be noted that the angle at which the light emitted by the ultraviolet detection lamp 22 exits the surface detection mechanism 2 can be adjusted through the light grid 21, so that the angle of the light emitted by the ultraviolet detection lamp 22 through the light grid 21 remains consistent, avoiding light scattering and facilitating the absorption of reflected light by the reflection detection plate 4.

[0052] Reference Figure 5-12 The trimming mechanism 3 includes a height adjustment motor 31 arranged inside the detection device body 1, a threaded transmission rod 32 is fixedly installed on the output end of the height adjustment motor 31, a trimming slider 33 is movably sleeved on the bottom limit of the detection device body 1, a driving motor 34 is fixedly installed inside the trimming slider 33, an internal thread matched with the threaded transmission rod 32 is provided inside the trimming slider 33, and a threaded transmission connection is maintained between the threaded transmission rod 32, and a group of fixed limiting light rods for auxiliary limiting are also arranged between the trimming slider 33 and the detection device body 1, a plurality of grinding discs 35 are rotatably connected to the bottom of the trimming slider 33 through bearings, and the transmission shafts of the grinding discs 35 are transmission-connected through belts, and the transmission shaft of one group of grinding discs 35 is fixedly connected to the driving motor 34, a liquid storage chamber 36 is fixedly installed inside the trimming slider 33, and a liquid spray plate 37 located in front of the forward direction of the grinding disc 35 is also fixedly installed at the bottom of the trimming mechanism 3;

[0053] It should be noted that the transmission shaft of the grinding disc 35 extends to the interior of the dressing slider 33 and maintains a transmission connection through a gear belt, and the diameter of the gears used for transmission on the transmission shaft of the middle group of grinding discs 35 is larger than the gears on the transmission shafts of the grinding discs 35 on both sides, so that the grinding discs 35 on both sides can be synchronously driven conveniently through the central grinding disc 35.

[0054] Furthermore, a spray hole is provided on the side wall of the spray plate 37 facing the grinding disc 35, the inner cavity of the liquid storage chamber 36 is connected with the spray hole of the spray plate 37 through a channel, a group of sealing grooves 361 are provided at the bottom outlet of the liquid storage chamber 36, and the internal limiting sealing sliding connection of the sealing groove 361 is connected with a sealing slider 362, and a plurality of groups of vertically distributed channels are provided at the center of the sealing slider 362, and a group of driving motors 363 are provided on the side wall of the sealing groove 361, and the output end of the driving motor 363 maintains a threaded transmission connection with the inside of the sealing slider 362.

[0055] Furthermore, the first trigger switch 238, the second trigger switch 239, the height adjustment motor 31, the drive motor 34, the ink storage chamber 25, the drive motor 363 and the control center 6 are electrically connected;

[0056] It should be noted that a timer is provided inside the control center 6 for making the height adjustment motor 31 work for a specific time. Whenever the first trigger switch 238 is pressed and triggered, the drive motor 363 can be controlled to start for a few seconds through the internal timer of the control center 6, thereby driving the output end of the drive motor 363 to rotate a few times, so that the sealing slider 362 is driven to slide a certain distance inside the sealing slide groove 361 as a whole through the threaded connection between the sealing slider 362 and the drive motor 363;

[0057] It should be noted that, when the subsequent piston magnet 234 approaches each group of second magnets 237 to drive the second magnet 237 to trigger the second trigger switch 239, each time the piston magnet 234 passes through the second magnet 237 to drive the second trigger switch 239 to be triggered for the first time, the internal timer of the control center 6 can be used to control the drive motor 363 to start forward for a few seconds, so that the sealing slider 362 moves to the center of the outlet of the liquid storage chamber 36, thereby increasing the flow rate of the internal flow channel of the sealing slider 362. When the piston magnet 234 resets and passes through the second magnet 237 to drive the second trigger switch 239 to be triggered for the second time, the internal timer of the control center 6 can be used to control the drive motor 363 to start reverse for a few seconds to reset, thereby reducing The internal flow channel of the sealing slider 362 has a flow rate, and when the piston magnet 234 is reset and drives the first magnet 236 to trigger the first trigger switch 238 for the second time through the first magnet 236, the first trigger switch 238 can drive the drive motor 363, the drive motor 34, and the height adjustment motor 31 to reset and close, and at the same time can drive the outlet of the electromagnetic valve at the bottom of the sealing magnet 26 to open, thereby achieving: when the surface detection mechanism 2 passes through an over-dried and unevenly dried crust and an uneven convex area, it automatically stops supplying ink to the marking port 24; the flowability of the sealing slider 362 is automatically adjusted according to the degree of protrusion of the uneven area, and the amount of liquid supplied to the grinding disc 35 during grinding is automatically adjusted according to the degree of protrusion.

[0058] The working principle of this UV varnish curing degree detection equipment:

[0059] Place the detection device body 1 as a whole on the surface of the UV varnish coated plate after UV irradiation and curing, and then slowly move the detection device body 1 along the surface of the plate. Figure 6The ultraviolet light emitted by the ultraviolet detection lamp 22 is directed at the surface coating of the plate at the same angle through the light grid 21, and the UV varnish coating on the surface of the plate can be further irradiated and cured. At the same time, if the curing effect of the varnish coating is good, the high gloss of the flat surface of the coating can efficiently reflect the ultraviolet light, so that it is reflected to the surface of the reflection detection plate 4. At the same time, since the reflection detection plate 4 continues to receive the efficiently reflected ultraviolet light, the overall resistance of the reflection detection plate 4 becomes smaller, so that the current passing through the electromagnet 27 in the circuit connected in series with the reflection detection plate 4 is relatively high, so that the electromagnet 27 maintains sufficient magnetism to perform sealing magnetic block 26. Adsorption has a flow-breaking effect on the convection pipe 28. When the UV varnish coating on the surface of the plate is slow to cure due to aging of the internal photoinitiator or problems with the ratio, when ultraviolet rays are irradiated to the surface of the coating that has not been fully cured, since the incompletely dried UV oil has a high absorption degree of ultraviolet rays, the curing agent and other substances inside the UV varnish can absorb the ultraviolet rays and reduce the reflection of ultraviolet rays, so that less light is reflected on the surface of the reflection detection plate 4, and the overall light intensity irradiated to the reflection detection plate 4 becomes lower, resulting in a larger internal resistance of the reflection detection plate 4, thereby reducing the overall magnetism of the electromagnet 27. Figure 4 , the sealing magnetic block 26 is reset under the action of elastic force, so that the aqueous ink in the ink storage chamber 25 flows into the marking port 24 through the channel between the circulation tube 28 and the sealing magnetic block 26, and is discharged through the marking port 24, making a mark on the coating surface to remind the staff to perform ultraviolet enhanced irradiation treatment here later;

[0060] When the surface detection mechanism 2 passes through the uneven area caused by peeling or convex spots on the surface of the board due to uneven drying speed, refer to Figure 7 Due to the uneven surface of the plate, the diffuse reflection of ultraviolet rays irradiated to the uneven area of ​​the coating is serious, which eventually leads to a decrease in the overall intensity of ultraviolet rays irradiated to the surface of the reflective detection plate 4. Figure 8The lifting slider 231 is pushed toward the inside of the surface detection mechanism 2 under the uneven protrusions on the surface of the plate, so that the hydraulic oil in the driving chamber 232 is pushed into the connecting pipe 233. Since the cross-sectional area of ​​the driving chamber 232 is much larger than the cross-sectional area of ​​the connecting pipe 233, the amount of hydraulic oil level increase flowing into the connecting pipe 233 is much larger than the amount of hydraulic oil level reduction in the driving chamber 232, which can achieve the effect of amplifying the degree of protrusion on the plate surface detected by the lifting slider 231. At the same time, the detection results of multiple groups of lifting sliders 231 can be collected through the connecting pipe 233 and flow into the central pipe 235 to further amplify the flatness detection amount. The piston magnet 234 is pushed by the hydraulic oil in the central pipe 235 to first be close to the first magnet 236. Under the action of the magnetic force, the first magnet 236 moves toward the piston magnet 234 to push the trigger piston The magnetic block 234, at this time, the height adjustment motor 31 is powered on and started to drive the threaded transmission rod 32 to rotate, and the threaded transmission of the threaded transmission rod 32 and the trimming slider 33 drives the trimming slider 33 to descend until the grinding disc 35 is close to the surface of the plate, and then the driving motor 34 is powered on and started to drive the grinding disc 35 to rotate to grind the surface of the plate, and at the same time, the driving motor 363 is powered on and started to rotate to drive the sealing slider 362 to slide inside the sealing slide groove 361 through the threaded transmission, so that the internal part of the channel of the sealing slider 362 coincides with the bottom outlet of the liquid storage chamber 36, so that the grinding lubricant in the liquid storage chamber 36 flows into the spray plate 37 through the sealing slider 362, and is discharged to the surface of the grinding disc 35 through the spray plate 37, so as to achieve lubrication and cooling effects while grinding; at the same time, the electromagnetic valve at the bottom outlet of the ink storage chamber 25 can be closed by triggering the first trigger switch 238, and there is no need to mark the grinding area;

[0061] It should be noted that the greater the convexity and the more severe the peeling of the plate surface, the longer the displacement distance of the piston magnet 234 under the transmission action of the lifting slider 231, and the more groups of the second trigger switch 239 are triggered, so that the displacement of the sealing slider 362 is greater, the more channels for circulation inside the sealing slider 362, and the more grinding solution enters the spray plate 37, so that the spray amount of the grinding solution can be adjusted according to the peeling and unevenness of the UV coating. When the unevenness and peeling are relatively mild, a small amount of grinding solvent can be sprayed to assist in grinding and finishing. When the unevenness is more serious, more grinding solvent can be sprayed to assist in grinding and finishing. The right amount of lubricating solvent can not only effectively ensure the friction and grinding effect of the grinding disc 35 on the grinding surface, and avoid excessive lubrication, but also effectively cool the grinding area to prevent the UV coating from fading due to excessive temperature during grinding, and the overall brittleness and reduced hardness of the coating, which leads to aggravated scratches and wear.

[0062] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A UV varnish curing degree detection device, comprising a detection device body (1) and a traveling wheel (11) symmetrically arranged at the bottom of the detection device body (1), characterized in that: Also includes: The surface detection mechanism (2) is arranged below the detection device body (1), and emits ultraviolet light to irradiate and detect the UV oil coating through an ultraviolet detection lamp (22) arranged inside the surface detection mechanism (2), and receives the reflected light through a reflection detection plate (4) arranged at the bottom of the detection device body (1). The curing degree of the UV oil coating can be judged according to the intensity of the reflected light, and the coating that is not completely cured is marked by discharging water-based ink through a marking port (24) arranged at the bottom of the surface detection mechanism (2); The flatness detection mechanism (23) is arranged at the bottom of the surface detection mechanism (2), and detects the flatness of the coating area passed by through a lifting slider (231) arranged at the bottom of the surface detection mechanism (2), and magnifies the unevenness of the coating through the connection between the driving cavity (232) and the connecting pipe (233) opened inside the surface detection mechanism (2), and automatically adjusts the extension distance of the grinding disc (35) arranged at the bottom of the detection device body (1) according to the unevenness of the coating surface to grind and trim the coating.

2. The UV varnish curing degree detection device according to claim 1, characterized in that: A reflection detection plate (4) is fixedly mounted on the bottom of the detection device body (1), a surface detection mechanism (2) and a trimming mechanism (3) are also fixedly mounted on the bottom of the detection device body (1), a control center (6) is arranged inside the detection device body (1), a plurality of groups of ultraviolet detection lamps (22) are fixedly mounted inside the side wall of the surface detection mechanism (2) close to the reflection detection plate (4), an ink storage cavity (25) is provided inside the surface detection mechanism (2), a marking port (24) for draining and marking is provided at the bottom of the surface detection mechanism (2), a flow tube (28) for connecting the ink storage cavity (25) and the marking port (24) is provided inside the surface detection mechanism (2), and a group of sealing magnetic blocks (22) for cutting off the flow tube (28) are also slidably connected inside the surface detection mechanism (2) through a spring seal. 6), a group of electromagnets (27) close to the sealing magnet (26) are fixedly installed inside the surface detection mechanism (2), and a flatness detection mechanism (23) is also arranged at the bottom of the surface detection mechanism (2), and the flatness detection mechanism (23) includes a driving chamber (232) opened at the bottom of the surface detection mechanism (2), and the internal limit seal of the driving chamber (232) is movably sleeved with a group of lifting sliders (231) with pulleys, and a connecting pipe (233) is opened inside the surface detection mechanism (2) above the driving chamber (232), and a group of centralizing pipes (235) are also opened inside the surface detection mechanism (2), and the ends of the connecting pipes (233) are connected and converged to the inside of the centralizing pipe (235), and the internal limit seal of the centralizing pipe (235) is slidably connected with a piston magnet (234).

3. The UV varnish curing degree detection device according to claim 2, characterized in that: The internal cross-sectional area of ​​the driving chamber (232) is much larger than the cross-sectional area of ​​the connecting pipe (233), and hydraulic oil for transmitting pressure is provided inside the driving chamber (232), the connecting pipe (233) and the central pipe (235) between the lifting slider (231) and the first magnetic block (236).

4. The UV varnish curing degree detection device according to claim 2, characterized in that: The inside of the surface detection mechanism (2) is close to the middle of the central tube (235) and is elastically connected to a group of first magnetic blocks (236) through a group of limiting sliding grooves and springs, and a group of first trigger switches (238) are fixedly installed below the first magnetic blocks (236). The inside of the surface detection mechanism (2) is elastically connected to multiple groups of evenly distributed second magnetic blocks (237) from the middle section of the central tube (235) toward the end of the central tube (235) through sliding grooves and springs, and a second trigger switch (239) is arranged at the bottom of each group of the second magnetic blocks (237).

5. The UV varnish curing degree detection device according to claim 4, characterized in that: The magnetic poles of the piston magnet (234) and the first magnet (236) and the second magnet (237) that are close to each other are arranged oppositely, and the cross-sections of the central tube (235) and the piston magnet (234) are both elliptical, which can prevent the piston magnet (234) from rotating when sliding inside the central tube (235).

6. The UV varnish curing degree detection device according to claim 2, characterized in that: A group of connecting grooves are opened in the center of the sealing magnetic block (26) in the same direction as the flow tube (28). The magnetic poles on the side where the electromagnet (27) and the sealing magnetic block (26) are close to each other are arranged oppositely. When the sealing magnetic block (26) and the electromagnet (27) attract each other under the action of magnetic force, the connecting grooves inside the sealing magnetic block (26) and the flow tube (28) remain misaligned and disconnected.

7. The UV varnish curing degree detection device according to claim 2, characterized in that: The side wall of the surface detection mechanism (2) provided with the ultraviolet detection lamp (22) is designed to be inclined, and the side wall of the surface detection mechanism (2) is provided with a light grid (21) for adjusting the angle of light emitted by the ultraviolet detection lamp (22).

8. The UV varnish curing degree detection device according to claim 4, characterized in that: The trimming mechanism (3) comprises a height adjustment motor (31) arranged inside the detection device body (1); a threaded transmission rod (32) is fixedly mounted on the output end of the height adjustment motor (31); a trimming slider (33) is movably sleeved at the bottom of the detection device body (1); a driving motor (34) is fixedly mounted inside the trimming slider (33); an internal thread matched with the threaded transmission rod (32) is provided inside the trimming slider (33) and a threaded transmission connection is maintained between the trimming slider (33) and the detection device body (1); A group of fixed limiting light rods for auxiliary limiting are also arranged between the measuring device body (1); the bottom of the dressing slider (33) is rotatably connected to multiple groups of grinding discs (35) through bearings; the transmission shafts of the grinding discs (35) are connected in transmission through belts, and the transmission shaft of one group of the grinding discs (35) is fixedly connected to the driving motor (34); a liquid storage chamber (36) is fixedly installed inside the dressing slider (33); and a liquid spray plate (37) located in front of the grinding disc (35) in the forward direction is also fixedly installed at the bottom of the dressing mechanism (3).

9. The UV varnish curing degree detection device according to claim 8, characterized in that: The side wall of the liquid spray plate (37) is provided with a spray hole facing the grinding disc (35); the inner cavity of the liquid storage chamber (36) is connected with the spray hole of the liquid spray plate (37) through a channel; a group of sealing slide grooves (361) are provided at the bottom outlet of the liquid storage chamber (36); the internal limit sealing sliding connection of the sealing slide groove (361) is connected with a sealing slider (362); the center of the sealing slider (362) is provided with a plurality of groups of vertically distributed channels; the side wall of the sealing slide groove (361) is provided with a group of driving motors (363); the output end of the driving motor (363) is threadedly connected with the inside of the sealing slider (362).

10. The UV varnish curing degree detection device according to claim 9, characterized in that: The first trigger switch (238), the second trigger switch (239), the height adjustment motor (31), the drive motor (34), the ink storage chamber (25), the drive motor (363) and the control center (6) are electrically connected.

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