CN112170141B - Curing method of UV skin paint on surface of plate - Google Patents
Curing method of UV skin paint on surface of plate Download PDFInfo
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- CN112170141B CN112170141B CN202011204273.XA CN202011204273A CN112170141B CN 112170141 B CN112170141 B CN 112170141B CN 202011204273 A CN202011204273 A CN 202011204273A CN 112170141 B CN112170141 B CN 112170141B
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- 238000001723 curing Methods 0.000 title claims abstract description 76
- 239000003973 paint Substances 0.000 title claims abstract description 53
- 230000000694 effects Effects 0.000 claims abstract description 23
- 239000000428 dust Substances 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 241000258971 Brachiopoda Species 0.000 claims description 8
- 238000003848 UV Light-Curing Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010034960 Photophobia Diseases 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 208000013469 light sensitivity Diseases 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
Abstract
The invention relates to a curing method of UV skin paint on the surface of a plate, wherein curing equipment comprises a frame, an input conveyor belt structure, an intermediate conveyor roller structure, an output conveyor belt structure and an LED curing lamp; is characterized by further comprising more than one upper skin sub-lamp group and more than two lower skin sub-lamp groups, wherein the power of each upper skin sub-lamp and each lower skin sub-lamp in the upper skin sub-lamp group and the lower skin sub-lamp group is less than 500W, the wavelength is 200nm-320nm, and the conveying roller (positioned between the upper skin sub-lamp group and the lower skin sub-lamp group; the ultraviolet light super-gloss layer has the advantages that the skin feel effect of the ultraviolet light super-gloss layer can be realized on a planar plate, the skin feel effect of the ultraviolet light super-gloss layer can be realized on a plate with a special-shaped surface, the consumption is reduced, the traditional coating process is simplified, and the skin feel effect of the ultraviolet light super-gloss layer generated by an excimer lamp curing technology can be realized.
Description
Technical Field
The invention relates to a curing method of UV skin paint on the surface of a plate.
Background
The skin-feel plate, namely the plate coated with the skin paint, has good touch and visual effect, and has become a hot spot for the application in the furniture and decorative material industries. The skin feel effect can be generally obtained by the following four processing techniques:
1. film pressing technology
After the UV finish paint is coated on the plate with the primer, the skin-feel film is used for flattening the skin-feel finish paint, the film is removed after being solidified by a UV light source, and the skin-feel product with the film pressure is obtained, as shown in fig. 10 and 12.
Film pressing technology can only process planar products; due to the microstructure limitation of the skin feel film, the product has the timeliness of skin feel and can be limited under certain conditions; when in production, the skin feel film is disposable, so that the production cost is high.
2. Coating technology
At present, self-drying paint (PU, water-based) is produced by a paint formulation, and the self-drying paint can be coated on a plate to achieve a skin feel effect, as shown in fig. 10 and 12, but the skin feel effect obtained by the method has a short duration and is not resistant to fingerprints.
3. Excimer lamp curing technique
The IOT company from germany created a 172nm UV curing device (eximer) and had unique properties, known as the "black technology" of UV curing technology.
The acrylic ester double bond in the UV paint formula can generate free radical after absorbing 172nm ultraviolet light, and a photoinitiator is not needed; the penetration depth of 172nm ultraviolet is only 100 to 500 nm, so that only a very thin layer of the coating on the surface of the plate is cured; polymerization and crosslinking of the cured layer can shrink to form a non-smooth surface and float on the uncured lower layer paint to achieve the effect of surface matte. However, this process needs to be performed in a nitrogen atmosphere to have an oxygen concentration of less than 100ppm in the operating environment, and then a conventional UV or electron beam is used for complete curing, as shown in FIGS. 11 and 13. The advantages are that: compared with mould pressing, PU, water-based and other skin-feel paint, the skin-feel product obtained by physical extinction is more scratch-resistant, anti-fouling, fingerprint-resistant, repairable and the like. The defects are that: the equipment has high one-time investment cost and higher operation cost, and only planar products can be processed (inferior products can occur if the flatness of a large plate is not enough). The standard service life of the 172nm ultraviolet lamp is 2000-3000 hours, and the lamp is easy to damage due to improper maintenance, and the price of one imported light source is about 7 ten thousand RMB (different brands can be different). When the plant is operating, a large amount of high purity nitrogen is required. Normally working normally requires 20 cubic/hour of nitrogen with a purity of 99.999%.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a curing method of UV skin paint on the surface of a plate, wherein the UV skin paint is irradiated by a weak-energy ultraviolet light source with the wavelength of 200nm-320nm, so that a rough and diffuse reflection surface can be formed on the surface of the paint by slight shrinkage, the irradiation effect similar to that of a 172nm light source can be achieved without the cooperation of a photoinitiator, and the principle is completely different from that of 172nm skin paint. The method adopts the ultraviolet light source with the wavelength of more than 200nm, so that nitrogen protection is not needed, and the influence of oxygen in the air on the irradiation distance of ultraviolet light is very weak, so that the method not only can realize the skin feel effect of the super-matte layer on a planar plate, but also can realize the skin feel effect of the super-matte layer on the plate with a special-shaped surface and four sides, thereby reducing the consumption, simplifying the traditional coating process, reducing the production and maintenance cost and realizing the skin feel effect of the super-matte layer generated by the excimer lamp curing technology.
In order to achieve the above purpose, the invention is realized by a curing method of UV skin paint on the surface of a plate, wherein curing equipment comprises a frame, an input conveyor belt structure, an intermediate conveyor roller structure, an output conveyor belt structure and an LED curing lamp; the input conveyor belt structure, the middle conveyor roller structure, the output conveyor belt structure and the LED curing lamps are all arranged on the frame, the LED curing lamps are positioned above the input conveyor belt structure, the vertical distance between the LED curing lamps and the input conveyor belt structure is 5-50mm, and the middle conveyor roller structure comprises more than three conveyor rollers; the light source is characterized by further comprising more than one upper skin sub-lamp group and more than two lower skin sub-lamp groups, wherein the power of each of the upper skin sub-lamp group and the lower skin sub-lamp groups is less than 500W, the wavelength is 200nm-320nm, the upper skin sub-lamp group and the lower skin sub-lamp groups are arranged on a rack, the conveying rollers are positioned between the upper skin sub-lamp groups and the lower skin sub-lamp groups, the vertical distance between the upper skin sub-lamp groups and the conveying rollers is 5-50mm, and each lower skin sub-lamp group is positioned at a gap between two adjacent conveying rollers so that light rays emitted by the lower skin sub-lamp groups can conveniently irradiate on the side edge of a plate; the curing steps are as follows:
step one LED curing of a Panel surface finish
Placing a plate with the surface coated with UV paint or sprayed with UV paint on an input conveyor belt structure, wherein the input conveyor belt structure drives the plate to move under an LED curing lamp, and when the plate is in the irradiation range of the LED curing lamp, the light of the LED curing lamp irradiates the plate to cure the UV paint bottom layer on the upper surface of the plate, wherein the speed of the input conveyor belt structure is 2-20m/min;
step two special curing of UV skin paint on the surface of the plate
The surface UV skin sub-bottom layer of the plate is solidified by the LED solidifying lamp and then enters a conveying roller of a middle conveying roller structure, the middle conveying roller structure drives the plate to move between the upper skin sub-lamp group and the lower skin sub-lamp group, when the plate is in the irradiation range of the upper skin sub-lamp group and the lower skin sub-lamp group, the light of the upper skin sub-lamp group irradiates the surface and the side edge of the plate, the lower skin sub-lamp group irradiates the side edge of the plate, the energy irradiated on the surface of the plate is equal to the energy irradiated on the side edge of the plate by adjusting the proportional relation of the distance and the quantity of the upper skin sub-lamp group and the lower skin sub-lamp group, and when the energy is proper, the skin sub-paint on the surface of the plate can shrink to form a non-smooth surface and float on the uncured lower-layer paint, so that the surface sub-gloss effect can be achieved, the gloss of the surface sub-gloss effect can reach 0.5-5.0 degree, and the feeling like the feeling of the skin of an infant can be called as the skin sub-effect, and the conveying speed of the conveying roller is 2-20m/min;
final curing of UV-skin paint on sheet surface
The surface skin paint of the plate enters a conventional UV curing machine from an output conveyor belt structure after being irradiated by the upper skin sub-lamp group and the lower skin sub-lamp group, and the skin paint on the plate is thoroughly cured under the irradiation of the mercury lamp.
In the technical scheme, each upper skin sub-lamp group comprises a uniform lamp shell, a heat dissipation fan arranged on the lamp shell, more than two upper skin sub-lamps arranged at the opening of the lamp shell and two reflecting plates; the lamp shell is arranged on the frame and above the middle conveying roller structure, the two reflecting plates are respectively arranged above the skin-lifting sub-lamps and distributed in an splay shape, the vertical distance between the skin-lifting sub-lamps and the conveying roller is 5-50mm, the power of each skin-lifting sub-lamp is less than 500W, and the wavelength is 200nm-320nm; the skin-lowering sub-lamp group comprises skin-lowering sub-lamps and reflecting grooves, the reflecting grooves are arranged on the frame and located between two adjacent conveying rollers, the skin-lowering sub-lamps are arranged in the corresponding reflecting grooves, the power of the skin-lowering sub-lamps is smaller than 500W, the wavelength is 200nm-400 nm, and the two walls of the reflecting grooves incline outwards so that light rays generated by the skin-lowering sub-lamps can be reflected upwards.
In the technical scheme, the input conveyor belt structure comprises an input conveyor belt, an input conveyor motor, an input conveyor belt driven roller and an input conveyor belt driving roller, wherein the input conveyor motor is arranged on a frame, the input conveyor belt driven roller and the input conveyor belt driving roller are both arranged on the frame and can rotate, an output rotating shaft of the input conveyor motor is connected with the input conveyor belt driving roller so as to drive the input conveyor belt driving roller to rotate, and the input conveyor belt is sleeved on the input conveyor belt driven roller and the input conveyor belt driving roller; the vertical distance between the LED curing lamp and the input conveyor belt is 5-50mm, and the transmission speed of the input conveyor belt is 2-20m/min;
the output conveyor belt structure comprises an output conveyor motor, an output conveyor belt driving roll shaft, an output conveyor belt and an output conveyor belt driven roll shaft, wherein the output conveyor motor is arranged on the frame, the output conveyor belt driving roll shaft and the output conveyor belt driven roll shaft are both arranged on the frame and can rotate, an output rotating shaft of the output conveyor motor is connected with the output conveyor belt driving roll shaft so as to drive the output conveyor belt driving roll shaft to rotate, the output conveyor belt is sleeved on the output conveyor belt driving roll shaft and the output conveyor belt driven roll shaft, and the transmission speed of the output conveyor belt is 2-20m/min;
the middle conveying roller structure further comprises more than three rotating gears and a middle transmission motor, the middle transmission motor is arranged on the frame, the rotating gears are all arranged on the frame in a rotating mode, two adjacent rotating gears are meshed with each other, the output end of the middle transmission motor drives one gear set to rotate, one end of the conveying roller is arranged on the frame in a transferring mode, and the other end of the conveying roller is arranged on the corresponding transferring gear.
In the technical scheme, the reflecting plate is a reflecting plate with triangular wrinkles.
In the technical scheme, the dust-proof device also comprises an input dust-proof cover, a middle dust-proof cover and an output dust-proof cover; the LED curing lamp comprises an input dust cover, a middle dust cover and an output dust cover, wherein the input dust cover, the middle dust cover and the output dust cover are all arranged on a frame, the input dust cover is arranged on an input conveyor belt structure and is positioned on the right side of an LED curing lamp, the middle dust cover is arranged on a middle conveying roller structure, a skin-friendly sub-lamp group and a skin-friendly sub-lamp group are positioned in the middle dust cover, exhaust holes are formed in the middle dust cover, and the output dust cover is arranged on the right side of the skin-friendly sub-lamp in an output conveyor belt structure.
In this technical scheme, still include two height-adjustable's regulation installing support, it sets up the front and back both sides at the frame to adjust the installing support, thereby the upper and lower height that thereby the LED curing lamp is established on corresponding regulation mounting bracket can be adjusted to the LED curing lamp.
In the technical scheme, the wavelength of the LED curing lamp is 395+/-10 nm.
Compared with the prior art, the invention has the advantages that: the ultra-matte layer skin feel effect is achieved on the planar plate, the UV skin feel effect of the skin paint can be achieved on the plate with the special-shaped surface, consumption is reduced, a traditional coating process is simplified, and the ultra-matte layer skin feel effect produced by an excimer lamp curing technology can be achieved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is an enlarged view of the middle portion of FIG. 4;
FIG. 6 is an enlarged view of the skin sub-lamp set of FIG. 4;
FIG. 7 is a B-B cross-sectional view of FIG. 3;
FIG. 8 is a cross-sectional view of C-C of FIG. 3;
FIG. 9 is an enlarged view of the middle portion of FIG. 8;
FIG. 10 is a graph showing the reflection of light from the supermatte layer on the surface of a sheet produced by the film pressing technique and the coating technique;
FIG. 11 is a graph showing the reflection of light from a supermatte layer on the surface of a sheet produced by excimer lamp curing techniques;
FIG. 12 is a surface electron microscope image of a supermatte layer on the surface of a sheet produced by the film pressing technique and the coating technique;
FIG. 13 is a surface electron micrograph of a supermatte layer of the surface of a sheet produced by excimer lamp curing techniques.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The curing method is characterized in that the curing equipment comprises a frame 6, an input conveyor belt structure, a middle conveyor roller structure, an output conveyor belt structure, an LED curing lamp 2, six skin sub-lamp groups and fourteen skin sub-lamp groups as shown in fig. 1 to 9; the input conveyor belt structure, the middle conveyor roller structure, the output conveyor belt structure, the LED curing lamps 2, the six skin sub-lamp groups and the fourteen skin sub-lamp groups are all arranged on the frame 6, the LED curing lamps 2 are positioned above the input conveyor belt structure, and the middle conveyor roller structure is positioned between the upper skin sub-lamp group and the lower skin sub-lamp group; the vertical distance between the LED curing lamp 2 and the input conveyor belt structure is 15mm, and the vertical distance can be selected in the range of 5-50mm according to actual conditions; the middle conveying roller structure comprises seventeen rotating conveying rollers 16, each of the lower skin sub-lamp groups is positioned at the gap between two adjacent conveying rollers 16 so that light rays emitted by the lower skin sub-lamp groups can conveniently irradiate on the side edge of a plate, the upper skin sub-lamp groups are positioned above the seventeen rotating conveying rollers 16, the vertical distance between the upper skin sub-lamp groups and the seventeen rotating conveying rollers 16 is 15mm, the vertical distance can also be selected in the range of 5-50mm according to actual conditions, the number of the conveying rollers 16 can be determined according to working requirements, and the number of the conveying rollers can be ten, eleven, twelve, thirteen … … and the like; the curing steps are as follows:
step one LED curing of a Panel surface finish
Placing a plate with surface coated with paint or sprayed with paint on an input conveyor belt structure, wherein the input conveyor belt structure drives the plate to move below an LED curing lamp 2, when the plate is in the irradiation range of the LED curing lamp 2, the light of the LED curing lamp 2 irradiates the plate to cure the paint bottom layer on the upper surface of the plate, the speed of the input conveyor belt structure is 5 m/min, the speed can also be selected in the range of 2-20m/min according to actual conditions, and the wavelength of the LED curing lamp 2 is 395nm;
step two special curing of UV skin paint on the surface of the plate
The surface UV skin sub-bottom layer of the plate is solidified by the LED solidifying lamp 2 and then enters the conveying roller 16 of the middle conveying roller structure, the middle conveying roller structure drives the plate to move between the upper skin sub-lamp group and the lower skin sub-lamp group, when the plate is in the irradiation range of the upper skin sub-lamp group and the lower skin sub-lamp group, the light of the upper skin sub-lamp group irradiates the surface and the side edge of the plate, the lower skin sub-lamp group irradiates the side edge of the plate, the energy irradiated on the surface of the plate is equal to the energy irradiated on the side edge of the plate by adjusting the proportional relation of the distance and the quantity of the upper skin sub-lamp group and the lower skin sub-lamp group, and when the energy is proper, the skin sub-paint on the surface of the plate can shrink to form a non-smooth surface and float on the uncured lower-layer paint, the surface sub-gloss effect is achieved, the glossiness of the plate can reach the extremely sub-gloss effect of 0.5-5.0 degrees, the feeling like the skin of an infant is called as the sub-effect, the speed of the conveying roller 16 is 5 m/min, and the speed can also be selected in the range of 2-20m/min according to the actual condition;
final curing of the skin paint on the surface of the sheet
The surface skin paint of the plate enters a conventional UV curing machine from the output conveyor belt structure after being irradiated by the upper skin lamp [ A1] and the lower skin lamp group, and the skin paint on the plate is thoroughly cured under the irradiation of the mercury lamp, so that the effect as shown in figure 13 is achieved.
In the embodiment, as shown in fig. 4 and 5, the sub-lamp group includes fourteen sub-lamps 15, the sub-lamps 15 are located at the gap between two adjacent conveying rollers 16, so that the light generated by the sub-lamps 15 can irradiate the sheet material through the gap between two adjacent conveying rollers 16, and the number of conveying rollers 16 and the number of sub-lamps 15 can be determined according to the actual situation, but the requirement of curing the sheet material needs to be satisfied; in order to improve the irradiation efficiency of the sub-lamp 15, the lamp further comprises fourteen reflecting grooves 19, wherein two walls of the reflecting grooves 19 incline outwards, the reflecting grooves 19 are arranged on the frame 6, the sub-lamps 15 are arranged in the corresponding reflecting grooves 19, the power of each sub-lamp 15 is 300W, the wavelength is 300nm, the power and the wavelength of the sub-lamps 15 can be determined according to practical conditions, but the power is required to be less than 500W, and the wavelength is required to be in the range of 200nm-400 nm; in operation, the wall of the reflective groove 19 can radiate the light generated by the skin lamp 15 upwards on the board, so that the skin paint on the surface of the board can achieve the effect of breaking down the surface gloss to form the extremely matte effect, even if the photosensitivity of the board surface is 0.5-5.0 degrees.
In this embodiment, as shown in fig. 4 and 6, each of the skin-friendly lamp groups includes a lamp housing 13, a heat dissipation fan 12 disposed on the lamp housing, five skin-friendly lamps 17 disposed at an opening of the lamp housing 13, and two reflection plates 18; the lamp housing 13 is arranged on the frame 6 and above the middle part of the conveying structure, the two reflecting plates 18 are respectively arranged above the Fuya lamps 17 and distributed in a splay shape, the power of each Fuya lamp 17 is 300W, the wavelength is 300nm, the power and the wavelength of the Fuya lamps 17 can be determined according to practical conditions, but the power is required to be less than 500W, and the wavelength is required to be in the range of 200nm-400 nm. When the light-emitting device works, the light generated by the upper skin sub-lamp 17 irradiates downwards on the plate, and the reflecting plate 18 also gathers the light generated by the upper skin sub-lamp 17 and irradiates downwards on the plate in a reflecting way, so that the skin sub-paint on the surface of the plate achieves the extremely sub-light effect, and even if the light sensitivity of the surface of the plate is 0.5-5.0. As shown in fig. 6, the reflecting plate 18 is a reflecting plate with triangular wrinkles, and the triangular wrinkles allow the light generated from the skin lamp 17 to be more uniformly irradiated on the plate.
In this embodiment, as shown in fig. 4, the input conveyor structure includes an input conveyor 1, an input conveyor motor 8, an input conveyor driven roller 11 and an input conveyor driving roller 14, the input conveyor motor 8 is disposed on the frame 6, the input conveyor driven roller 11 and the input conveyor driving roller 14 are both disposed on the frame 6 and rotatable, an output shaft of the input conveyor motor 8 is connected with the input conveyor driving roller 14 so as to drive the input conveyor driving roller 14 to rotate, and the input conveyor 1 is sleeved on the input conveyor driven roller 11 and the input conveyor driving roller 14; the vertical distance between the LED curing light 2 and the input conveyor belt 1 is 15mm, and the transmission speed of the input conveyor belt 1, namely the speed of the input conveyor belt structure, is 5 m/min; when the plate feeding device works, the plate is placed on the input conveyor belt 1, the input conveyor belt 1 moves, and the plate also moves along with the input conveyor belt 1;
the output conveyor belt structure comprises an output conveyor motor 10, an output conveyor driving roller 20, an output conveyor 21 and an output conveyor driven roller 22, wherein the output conveyor motor 10 is arranged on the frame 6, the output conveyor driving roller 20 and the output conveyor driven roller 22 are both arranged on the frame 6 and can rotate, an output rotating shaft of the output conveyor motor 10 is connected with the output conveyor driving roller 20 so as to drive the output conveyor driving roller 20 to rotate, and the output conveyor 21 is sleeved on the output conveyor driving roller 20 and the output conveyor driven roller 22, and the transmission speed of the output conveyor 21, namely the speed of the output conveyor structure, is 5 m/min; when the plate conveying device works, the plate moves onto the output conveying belt 21 from the middle conveying roller structure, the output conveying belt 21 moves, and the plate also moves along with the output conveying belt 21;
the intermediate conveying roller structure further comprises seventeen rotating gears 24 and an intermediate transmission motor 9, the intermediate transmission motor 9 is arranged on the frame 6, the seventeen rotating gears 24 are all arranged on the frame 6 in a rotating mode, two adjacent rotating gears 24 are meshed with each other, the output end of the intermediate transmission motor 9 drives one rotating gear 24 to rotate, the rotating gears drive the adjacent rotating gears to rotate, the number of gears in the rotating gears 24 is the same as that of the conveying rollers 16, one end of each conveying roller 16 is arranged on the frame 6 in a transferring mode, and the other end of each conveying roller 16 is arranged on the corresponding rotating gear; the vertical distance between the upper skin lamp group and the conveying roller 16 is 15mm, and the conveying speed of the conveying roller 16 is 8 m/min; in operation, the sheet material is transferred from the input conveyor belt 1 to the transfer roller 16, and the transfer roller 16 rotates to drive the sheet material to move.
In this embodiment, as shown in fig. 1 to 4, the dust collector further includes an input dust cover 3, an intermediate dust cover 4, and an output dust cover 5, where the input dust cover 3, the intermediate dust cover 4, and the output dust cover 5 are all disposed on the rack 6; the input dust cover 3 covers the input conveyor belt structure and is positioned on the right side of the LED curing lamp 2; the middle dust cover 4 is covered on the structure of the middle conveying roller, the upper skin sub-lamp group and the lower skin sub-lamp group are positioned in the middle dust cover 4, and the middle dust cover 4 is provided with an exhaust hole 41; the output dust cover 5 covers the output conveyor belt structure. During operation, the plate placed on the input conveyor belt structure is irradiated by the LED curing lamp 2 and then enters the input dust cover 3, then enters the middle dust cover 4 through the input dust cover 3, and after the plate in the middle dust cover 4 is irradiated by the skin-up sub-lamp group and the skin-down sub-lamp group, the plate is transported to the output conveyor belt structure through the middle conveyor roller structure and is output.
In this embodiment, as shown in fig. 1 and 3, in order to adjust the vertical position of the LED curing lamp 2, the device further includes two height-adjustable adjusting and mounting brackets 7, the adjusting and mounting brackets 7 are disposed on the front and rear sides of the frame 6, and the LED curing lamp 2 is disposed on the corresponding adjusting and mounting bracket 7 so as to adjust the vertical height of the LED curing lamp 2.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The curing method of the UV skin paint on the surface of the plate comprises a frame (6), an input conveyor belt structure, an intermediate conveyor roller structure, an output conveyor belt structure and an LED curing lamp (2); the LED curing lamp (2) is positioned above the input conveyor belt structure, the vertical distance between the LED curing lamp (2) and the input conveyor belt structure is 5-50mm, and the middle conveyor roller structure comprises more than three conveyor rollers (16); the light source is characterized by further comprising more than one upper skin sub-lamp group and more than two lower skin sub-lamp groups, wherein the power of each upper skin sub-lamp group and each lower skin sub-lamp in the upper skin sub-lamp group and the lower skin sub-lamp group is less than 500W, the wavelength is 200nm-320nm, the upper skin sub-lamp group and the lower skin sub-lamp groups are arranged on a frame (6), the conveying roller (16) is positioned between the upper skin sub-lamp group and the lower skin sub-lamp groups, the vertical distance between the upper skin sub-lamp group and the conveying roller (16) is 5-50mm, and each lower skin sub-lamp group is positioned at a gap between the two adjacent conveying rollers (16) so that light rays emitted by the lower skin sub-lamp groups can irradiate on the side edge of a plate; the curing steps are as follows:
step one LED curing of a Panel surface finish
The plate with the UV skin paint coated or sprayed on the surface is placed on an input conveyor belt structure, the input conveyor belt structure drives the plate to move under an LED curing lamp (2), when the plate is in the irradiation range of the LED curing lamp (2), the light of the LED curing lamp (2) irradiates on the plate, so that the UV skin paint bottom layer on the upper surface of the plate is cured, and the speed of the input conveyor belt structure is 2-20m/min;
step two special curing of UV skin paint on the surface of the plate
The surface UV skin sub-bottom layer of the plate is solidified by the LED solidifying lamp (2) and then enters a conveying roller (16) of a middle conveying roller structure, the middle conveying roller structure drives the plate to move between the upper skin sub-lamp group and the lower skin sub-lamp group, when the plate is in the irradiation range of the upper skin sub-lamp group and the lower skin sub-lamp group, the light of the upper skin sub-lamp group irradiates the surface and the side edge of the plate, the lower skin sub-lamp group irradiates the side edge of the plate, the energy irradiated on the surface of the plate is equal to the energy irradiated on the side edge of the plate by adjusting the proportional relation of the distance and the quantity of the upper skin sub-lamp group and the lower skin sub-lamp group, and when the energy is proper, the skin sub-paint on the surface of the plate can shrink to form a non-smooth surface and float on the uncured lower-layer paint, so that the surface sub-gloss effect is achieved, the glossiness reaches 0.5-5.0 degree, and the conveying speed of the conveying roller (16) is 2-20m/min;
final curing of UV-skin paint on sheet surface
The surface skin paint of the plate enters a conventional UV curing machine from an output conveyor belt structure after being irradiated by an upper skin sub-lamp group and a lower skin sub-lamp group, and the skin paint on the plate is thoroughly cured under the irradiation of a mercury lamp;
each skin-up sub-lamp group comprises a uniform lamp shell (13), a skin-up sub-lamp (17) arranged at the opening of the lamp shell (13) and a reflecting plate (18); the lamp housing (13) is arranged on the frame (6), the reflecting plate (18) is arranged on the skin sub-lamps (17), the vertical distance between the skin sub-lamps (17) and the conveying roller (16) is 5-50mm, the power of each skin sub-lamp (17) is less than 500W, and the wavelength is 200-320 nm;
the skin-lowering sub-lamp group comprises skin-lowering sub-lamps (15) and reflecting grooves (19), the reflecting grooves (19) are formed in the machine frame (6), the skin-lowering sub-lamps (15) are arranged in the corresponding reflecting grooves (19), the power of the skin-lowering sub-lamps (15) is less than 500W, and the wavelength is 200-320 nm;
the wavelength of the LED curing lamp (2) is 395+/-10 nm.
2. The method for curing the UV-skin paint on the surface of the plate according to claim 1, wherein: each skin-care sub-lamp group also comprises a heat dissipation fan (12) arranged on the lamp housing (13); the lamp shell (13) is arranged on the frame (6) and above the middle conveying roller structure, and the skin-care sub-lamp (17) is provided with more than two skin-care sub-lamps and is arranged at the opening of the lamp shell (13); the two reflecting plates (18) are arranged above the skin lamp (17) respectively and distributed in a splayed shape;
the reflecting grooves (19) are arranged on the frame (6) and positioned between two adjacent conveying rollers (16), and the two walls of the reflecting grooves (19) incline outwards so as to be convenient for light generated by the skin-friendly sub-lamp (15) to reflect upwards.
3. The method for curing the UV-skin paint on the surface of the plate according to claim 1, wherein:
the input conveyor belt structure comprises an input conveyor belt (1), an input conveyor motor (8), an input conveyor belt driven roller (11) and an input conveyor belt driving roller (14), wherein the input conveyor motor (8) is arranged on a frame (6), the input conveyor belt driven roller (11) and the input conveyor belt driving roller (14) are both arranged on the frame (6) and can rotate, an output rotating shaft of the input conveyor motor (8) is connected with the input conveyor belt driving roller (14) so as to drive the input conveyor belt driving roller (14) to rotate, and the input conveyor belt (1) is sleeved on the input conveyor belt driven roller (11) and the input conveyor belt driving roller (14); the vertical distance between the LED curing lamp (2) and the input conveyor belt (1) is 5-50mm, and the transmission speed of the input conveyor belt (1) is 2-20m/min;
the output conveyor belt structure comprises an output conveyor motor (10), an output conveyor belt driving roller shaft (20), an output conveyor belt (21) and an output conveyor belt driven roller shaft (22), wherein the output conveyor motor (10) is arranged on a frame (6), the output conveyor belt driving roller shaft (20) and the output conveyor belt driven roller shaft (22) are both arranged on the frame (6) and can rotate, an output rotating shaft of the output conveyor motor (10) is connected with the output conveyor belt driving roller shaft (20) so as to drive the output conveyor belt driving roller shaft (20) to rotate, the output conveyor belt (21) is sleeved on the output conveyor belt driving roller shaft (20) and the output conveyor belt driven roller shaft (22), and the transmission speed of the output conveyor belt (21) is 2-20m/min;
the middle conveying roller structure further comprises more than three rotating gears (24) and a middle transmission motor (9), the middle transmission motor (9) is arranged on the frame (6), the rotating gears (24) are all rotationally arranged on the frame (6), two adjacent rotating gears (24) are meshed with each other, the output end of the middle transmission motor (9) drives one rotating gear (24) to rotate, one end of the conveying roller (16) is rotationally arranged on the frame (6), and the other end of the conveying roller (16) is arranged on the corresponding rotating gear (24).
4. The method of curing a UV-skin paint on a board surface according to claim 2, characterized in that said reflecting plate (18) is a reflecting plate with triangular folds.
5. The method for curing the UV skin paint on the surface of the plate according to claim 1, further comprising an input dust cover (3), an intermediate dust cover (4) and an output dust cover (5); the novel LED curing lamp is characterized in that the input dust cover (3), the middle dust cover (4) and the output dust cover (5) are all arranged on the frame (6), the input dust cover (3) is covered on the structure of the input conveyor belt and is positioned on the right side of the LED curing lamp (2), the middle dust cover (4) is covered on the structure of the middle conveyor roller, the skin-up sub-lamp group and the skin-down sub-lamp group are positioned in the middle dust cover, an exhaust hole (41) is formed in the middle dust cover (4), and the output dust cover (5) is covered on the structure of the output conveyor belt.
6. The method for curing the UV skin paint on the surface of the plate according to claim 1, further comprising two height-adjustable adjusting mounting brackets (7), wherein the adjusting mounting brackets (7) are arranged on the front side and the rear side of the frame (6), and the LED curing lamps (2) are arranged on the corresponding adjusting mounting brackets (7) so as to adjust the upper height and the lower height of the LED curing lamps (2).
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| CN113019857A (en) * | 2021-03-02 | 2021-06-25 | 惠州市摩彩装饰材料有限公司 | UV skin-feel full-matte surface-cleaning coating construction process for decorative plate |
| CN113894026B (en) * | 2021-09-24 | 2023-06-27 | 江苏固立得精密光电有限公司 | UV (ultraviolet) curing device with large irradiation range |
| CN115283221A (en) * | 2022-08-22 | 2022-11-04 | 优威赛斯光电技术(湖州)有限公司 | Ultraviolet lamp tube, lamp shade and curing method for preparing micro-wrinkle paint surface |
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