CN111634144B - Wooden floor surface coating method based on 3D printing technology - Google Patents

Wooden floor surface coating method based on 3D printing technology Download PDF

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Publication number
CN111634144B
CN111634144B CN202010489003.1A CN202010489003A CN111634144B CN 111634144 B CN111634144 B CN 111634144B CN 202010489003 A CN202010489003 A CN 202010489003A CN 111634144 B CN111634144 B CN 111634144B
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layer
printing
texture
texture structure
wood
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CN111634144A (en
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姜俊
吴忠其
吴丽虹
翁园园
吴玉琪
单志超
冯燕飞
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Huzhou Inspection And Testing Center
Huzhou Suofeiluo Wood Industry Technology Co ltd
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Huzhou Suofeiluo Wood Industry Technology Co ltd
Huzhou Hengding Product Testing Center
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/18—Applying ornamental structures, e.g. shaped bodies consisting of plastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0023—Digital printing methods characterised by the inks used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0076—Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • B44C3/025—Superimposing layers to produce ornamental relief structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/04—Modelling plastic materials, e.g. clay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F9/00—Designs imitating natural patterns
    • B44F9/02—Designs imitating natural patterns wood grain effects

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
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  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)

Abstract

The application discloses wooden floor surface coating method based on 3D printing technology includes the following process steps in proper order: s1, surface treatment of the profile; s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model; s3, according to the three-dimensional model, laminating and printing on the surface of the profile to form a texture structure layer; s4, according to the color image information, performing UV printing on the texture layer to form a texture pattern layer; in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added. The texture structures of concave-convex, wire drawing, wood rays, pipe holes and the like of precious hard broad-leaved wood can be relatively vividly reproduced, and the formed 3D coating layer has stereoscopic impression.

Description

Wooden floor surface coating method based on 3D printing technology
Technical Field
The application relates to the technical field of coating, in particular to a wooden floor surface coating method based on a 3D printing technology.
Background
The high value-added utilization of low-grade profiles (for example, plywood, high-density fiberboard, oriented strand board, etc. made of fast-growing wood, etc.) has been a subject of research in the field of wood processing. One solution to high value-added utilization of low-grade profiles is to make wood grain forming high-grade wood (e.g., precious wood or a-grade hardwood) on the surface of the low-grade profile by 3D printing. In the prior art, the solution includes the following three specific implementation methods:
(1) the method is limited by the number of roller plates, the types of wood textures which can be manufactured are very limited, and the repetition rate of the same wood texture after the product is paved is high;
(2) the method can print any one of scanned wood textures, but is limited to a plane printing mode, so that the wood textures lack three-dimensional sense and the printed wood textures have low fidelity;
(3) the layer-by-layer ink-jet printing is to print the scanned pattern layer (UV pattern layer or ink pattern layer) on the surface of the section bar, and then spray transparent or semitransparent UV or ink on the specific position on the pattern layer to form the texture layer, but the texture layer is covered on the pattern layer, so the pattern and the texture of the wood texture prepared by the method are separated visually, and the fidelity of the printed wood texture is low.
In view of the foregoing, a need exists for a method of finishing a wood floor surface that provides a high degree of fidelity of wood grain.
Disclosure of Invention
The technical purpose of the present application is to overcome the above technical problems, and to provide a method for coating a surface of a wooden floor based on a 3D printing technique, which can reproduce texture structures such as concave and convex, drawn lines, wood rays, pipe holes, etc. of precious hard broad-leaved wood relatively vividly, and the formed 3D coating layer has a stereoscopic impression.
In order to achieve the technical purpose, the application discloses a wood floor surface coating method based on a 3D printing technology, which sequentially comprises the following steps of:
s1, surface treatment of the profile;
s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model;
s3, according to the three-dimensional model, laminating and printing on the surface of the profile to form a texture structure layer;
s4, according to the color image information, performing UV printing on the texture layer to form a texture pattern layer;
in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added.
By the method, the texture structure layer is printed firstly to form texture structures including wood rays, pipe holes and the like of the section of the target material on the surface of the section bar, and then the texture pattern layer is printed on the texture structure layer, namely, the texture structure of the natural color is colored, so that the reproduced wood texture is not limited to the textures of concave-convex, wire drawing and the like on the surface of the wood, but also comprises the structures of finer wood rays, pipe holes and the like, and therefore, the method has more vivid finishing effect; and the texture structure layer and the texture pattern layer are combined to have stronger integral sense, the texture pattern layer is more vivid due to the reflection of the texture structure layer, and the 3D coating layer has three-dimensional sense.
Preferably, the abrasion-resistant raw material is alumina powder, silica powder, alumina paste, or silica paste.
Preferably, in step S2, the scan thickness of the target material section is 0.1-5 mm.
Preferably, in step S3, the lamination printing is performed using white UV ink, and the texture structure layer is formed by UV light curing.
Preferably, the thickness of the texture structure layer is 0.1-0.3 mm, and the layering thickness of the lamination printing is 20-30 μm.
Preferably, in step S3, the lamination printing is performed using a raw material, which is wood powder including thermosetting resin having a particle size of 20 to 50 μm, abrasion resistant powder, and is thermally cured to form the texture structure layer.
Preferably, the thickness of the texture structure layer is 2-5 mm, and the layering thickness of the lamination printing is 100-500 mu m.
Preferably, the wear-resistant powder is Al203Powder or SiO2And the ratio of the addition amount of the wear-resistant powder to the addition amount of the wood powder is 1 (2-4).
Preferably, in step S3, the following substeps are included:
s3-1, according to the three-dimensional model, printing the 1 st layering to the 4 th layer or the 5 th layer on the surface of the section in a laminating mode to form a basic texture structure layer;
s3-2, according to the three-dimensional model, printing the 2 nd last layer or the 3 rd last layer to the last layer in a laminating mode by using transparent or semitransparent UV ink on the basic texture structure layer to form a texture correction layer.
Preferably, the thickness of the lamination layer in the texture correction layer is 20-30 μm.
Preferably, in step S3, the thermal expansion particles are printed on the uncured textured layer in a lamination manner, and then the textured layer is cured.
Preferably, after the texture layer is solidified and cooled, the thermal expansion particles are taken out, and then step S4 is performed.
Preferably, the thermally expandable fine particles have a particle diameter of 10 to 20 μm.
By the method, the texture structure layer is printed firstly to form texture structures including wood rays, pipe holes and the like of the section of the target material on the surface of the section bar, and then the texture pattern layer is printed on the texture structure layer, namely, the white texture structure is colored, so that the reproduced wood texture is not limited to the textures of concave-convex shapes, wire drawing and the like on the surface of the wood, but also comprises finer structures of the wood rays, the pipe holes and the like, and therefore, the method has more vivid finishing effect; and the texture structure layer and the texture pattern layer are combined to have stronger integral sense, the texture pattern layer is more vivid due to the reflection of the texture structure layer, and the 3D coating layer has three-dimensional sense.
Furthermore, white UV printing ink is used for laminating and printing, so that the surface of the section bar can be primed while the texture structure layer is manufactured, and the coloring effect of the texture pattern layer on the texture structure layer is effectively ensured. Meanwhile, the thickness of the texture structure layer can be effectively improved by performing laminating printing on the original material, so that the 3D coating layer is more vivid; and the improvement of the thickness of the texture structure layer can further enrich the treatment process of the 3D coating layer, such as an antique treatment process of copying and printing a large arc chamfer, so that the coated low-grade sectional material has the antique treatment effect of thick-skinned precious hard broad-leaved wood.
Furthermore, through the arrangement of the texture trimming layer, the printing misalignment of the texture structure layer and the texture pattern layer can be effectively trimmed visually, and the stereoscopic impression of the basic texture structure layer is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 2 of the present application;
fig. 3 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 3 of the present application;
in the drawings: 100-texture structure layer, 110-basic texture structure layer, 120-texture correction layer, 200-texture pattern layer and 800-section bar.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1: referring to fig. 1, a method for finishing a surface of a wooden floor based on a 3D printing technology sequentially comprises the following steps:
s1, carrying out surface treatment on the section bar 800;
s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model;
s3, according to the three-dimensional model, laminating and printing on the surface of the profile 800 to form a texture structure layer 100;
s4, UV printing is performed on the texture structure layer 100 according to the color image information to form the texture pattern layer 200.
Through the above method, the texture structure layer 100 and the texture pattern layer 200 covering the texture structure layer together form a 3D coating layer.
Specifically, in step S1, the section bar 800 may be plywood, triple-layer plywood, high-density fiberboard, oriented strand board, or the like; the surface treatment is to form a flat printing surface on the surface of the section by using a sander, for example, a 180-220-mesh fine sanding belt is used.
In step S2, the target material section is what kind of section of what kind of wood to be printed on the profile 800, in this embodiment, the target material is the scirpus dabryanus, and the target material section is a chord section of the scirpus dabryanus. Firstly, scanning the chord section of the branches of large red sour jujube by adopting a two-dimensional scanning device (such as a CCD scanner) so as to obtain and form color image information; then, scanning the section surface of the branches of the scirpus grandis to a thickness layer of 0.1-0.3 mm below the section surface by using three-dimensional scanning equipment (such as a three-dimensional laser scanner with the precision of 10 μm), wherein the thickness layer is 0.2mm in the embodiment, so as to obtain a three-dimensional model on the surface layer with the thickness of 0.2mm, and the three-dimensional model records texture structures of wood, such as concave-convex structures, drawn wires, wood rays, pipe holes and the like; finally, the three-dimensional model is layered using three-dimensional software (e.g., PRO-E) to form a layered file that is recognizable by a 3D printing device (e.g., 3D printer), each layer having a thickness of 20 μm for a total of 5 layers in this embodiment. In other embodiments, the texture layer 100 has a thickness of 0.2mm, and each layer has a thickness of 25 μm for a total of 8 layers; alternatively, the texture layer 100 may have a thickness of 0.3mm and each layer may have a thickness of 30 μm for a total of 10 layers.
In step S3, a layered file layer formed according to the three-dimensional model is printed on the surface of the profile by 3D printer lamination using white UV ink, and cured with UV light to form a texture structure layer 100, for example, a 4 lamp UV lamp (5 kw/lamp).
In step S4, a UV ink with an abrasion resistant material added thereto is UV printed onto the texture structure layer 100 by a UV inkjet printer and cured by UV light to form the texture pattern layer 200, for example, a 4-lamp UV lamp (5 kw/lamp). The added wear-resistant raw material is one of alumina powder, silica powder, alumina sticky substance or silica sticky substance. Through the addition of the wear-resistant raw materials, the surface hardness and the wear resistance of the 3D coating layer can be effectively improved. The person skilled in the art can determine the amount of the wear-resistant raw material to be added by the desired wear resistance index of the final product. Since the texture pattern layer 200 is an inkjet coating layer and has a relatively small thickness, in order to further improve the surface hardness and the abrasion resistance of the 3D coating layer, an abrasion resistant material may be added to the white UV ink in step S3, and the abrasion resistant material added is preferably an alumina paste or a silica paste (viscosity of 5 to 6mPa · S).
In the embodiment, the 3D printing technology is based on the fact that the texture of precious wood can be accurately reproduced, the original veneering decoration of the precious hard broad-leaved wood veneer is replaced, the added value of the low-grade section bar is improved, and meanwhile, the consumption of the precious hard broad-leaved wood is reduced; meanwhile, the production line based on the 3D printing technology can replace the existing UV coating production line, so that the processing production line is effectively shortened, the production efficiency is improved, the energy consumption is reduced, and the volatilization of harmful substances is reduced.
Further, the method for finishing the surface of the wooden floor based on the 3D printing technology of the present application is implemented by printing the texture structure layer 100 to form the texture structure including the wood ray, the pipe hole and the like of the section of the target material on the surface of the profile, and then printing the texture pattern layer 200 on the texture structure layer 100, i.e. coloring the white texture structure:
compared with multiple chromatography printing, the reproduced wood texture is not only limited to the texture of concave-convex, wire drawing and the like on the surface of the wood, but also comprises a finer wood ray, a pipe hole and other structures, so that the reproduced wood texture has a more vivid finishing effect, any section of any wood can be scanned, any wood texture type can be manufactured, and the repetition rate of the same wood texture can be avoided to the greatest extent under the condition that the stock permits;
compared with ink-jet printing and layer-by-layer ink-jet printing, the 3D coating has a stereoscopic impression, when the texture pattern layer 200 colors the texture structure layer 100, the ink correspondingly sprayed on the wood ray, the pipe hole and other patterns of the texture pattern layer can permeate into the wood ray, the pipe hole and other structures of the texture structure layer 100, so that the texture structure layer 100 and the texture pattern layer 200 are combined to have a stronger overall feeling, and the texture pattern layer 200 is more vivid due to the reflection of the texture structure layer 100.
Example 2: the embodiment 2 is different from the embodiment 1 in that in the step S3, a lamination printing is performed using a raw material, which is wood powder including thermosetting resin having a particle size of 20 to 50 μm, abrasion resistant powder, and heat curing is used to form the texture structure layer 100.
In the embodiment, the raw material is used for laminating and printing, and the raw material is mainly wood powder, so that the texture structure layer 100 has a more woody material feeling, and meanwhile, the thickness of the texture structure layer 100 can be effectively increased, so that the 3D coating layer is more vivid; the increase of the thickness of the texture structure layer 100 can further enrich the treatment process of the 3D coating layer, such as the antique treatment process of copying and printing a large arc chamfer, as shown in fig. 2, so that the coated low-grade profile has the antique treatment effect of precious hard broad-leaved wood with thick skin (more than 2 mm).
Preferably, the wood powder is wood powder subjected to high-temperature heat treatment, for example, a fast-growing poplar board is subjected to heat treatment at 160 ℃ for 3 hours and then made into wood powder with the particle size of 20-50 μm, or a birch board is subjected to heat treatment at 140 ℃ for 2.5 hours and then made into wood powder with the particle size of 20-50 μm; the thermosetting resin may be a phenolic resin; the wear-resistant powder is Al203Powder or SiO2The ratio of the addition amount of the wear-resistant powder to the addition amount of the wood powder is 1 (2-4), and in the embodiment, the ratio of the addition amount of the wear-resistant powder to the addition amount of the wood powder is 1: 3.
Wood subjected to high-temperature heat treatment is relatively easy to prepare wood powder particles with micro and uniform particle sizes; meanwhile, the wood powder particles subjected to high-temperature heat treatment can be relatively well dispersed in liquid thermosetting resin, and have relatively good fluidity, so that the bonding of the original material in 3D printing equipment is avoided, and the extrusion of the original material from the 3D printing equipment is facilitated. Further, the addition of the wear-resistant powder can not only improve the wear resistance of the texture structure layer 100 and enable the texture structure layer to have relatively good surface hardness, but also improve the wettability of the heat-treated wood powder, so that the wood powder is relatively fully dispersed and wetted in the liquid thermosetting resin, and the bonding strength between the texture structure layer 100 and the profile 800 can be relatively effectively improved.
In the present embodiment, the thickness of the texture layer 100 is 2mm, and the thickness of each layer is 100 μm, for a total of 20 layers. In other embodiments, the texture layer 100 has a thickness of 3mm, and each layer has a thickness of 200 μm for a total of 15 layers; or, the thickness of the texture structure layer 100 is 4mm, the thickness of each layer is 500 μm, and the total number of layers is 8; or the texture layer 100 has a thickness of 4.8mm and each layer has a thickness of 400 μm for a total of 12 layers.
Example 3: embodiment 3 differs from embodiments 1 and 2 in that, as shown in fig. 3, in step S3, the following substeps are included:
s3-1, according to the three-dimensional model, printing the 1 st layering to the 2 nd last layering or the 3 rd last layering (calculated from the layering far away from the tangent plane surface to the layering of the tangent plane surface) on the surface of the profile 800 in a laminating way to form a basic texture structure layer 110;
s3-2, printing the penultimate 2 or 3-last layering to the last layering in a layer-by-layer manner using transparent or translucent UV ink on top of the base texture structure layer 110 according to the three-dimensional model to form the texture correction layer 120.
Preferably, the thickness of the texture correction layer 120 is 20 to 30 μm. For example, when the layered structure is printed with white UV ink, the thickness of the texture structure layer 100 is 0.3mm, the thickness of each layer is 30 μm, the total number of layers is 10, in step S3-1, the 1 st to 7 th layers are printed on the profile 800, and the basic texture layer 110 is formed after ultraviolet light curing; in step S3-2, the 8 th to 10 th sub-layers are printed on the base texture layer 110 using transparent UV ink, and the texture correction layer 120 is formed after UV curing. For another example, when the layered structure is printed by using white UV ink, the thickness of the texture structure layer 100 is 0.3mm, the thicknesses of the 1 st to 8 th layers are 30 μm, and the thicknesses of the 9 th to 11 th layers are 20 μm, which total 11 layers, in step S3-1, the 1 st to 8 th layers are printed on the profile 800, and the basic texture layer 110 is formed after ultraviolet curing; and printing the 9 th to 11 th layered layers on the base texture layer 110 by using semitransparent UV ink, and forming a texture correction layer 120 after ultraviolet curing. For another example, when the layered structure is printed by using the raw material, the thickness of the texture structure layer 100 is 2.05mm, the thicknesses of the 1 st to 20 th layers are 100 μm, the thicknesses of the 21 st to 22 th layers are 25 μm, and the total of 22 layers are printed, in step S3-1, the 1 st to 20 th layers are printed on the profile 800, and the base texture layer 110 is formed after thermal curing; then, the 21 st to 22 th layered layers are printed on the base texture layer 110 using translucent UV ink, and the texture correction layer 120 is formed after UV curing.
In the present embodiment, the texture trimming layer 120 is disposed, so that the printing misalignment between the texture structure layer 100 and the texture pattern layer 200 can be effectively corrected visually, and the stereoscopic impression of the basic texture structure layer 110 can be improved.
Example 4: embodiment 4 is different from embodiments 1, 2, and 3 in that, in step S3, the thermal expansion particles are printed in a layered manner on the uncured texture structure layer 100 according to the last layering of the three-dimensional model, and then the texture structure layer 100 is subjected to a curing process; and after the texture layer 100 is solidified and cooled, the thermal expansion particles are taken out, and then the step S4 is performed. Preferably, the thermally expandable fine particles have a particle size of 10 to 20 μm.
In this embodiment, thermal expansion particles are printed on the uncured texture structure layer 100 in a lamination manner according to the last lamination of the three-dimensional model, so that the thermal expansion particles are embedded into the pore-shaped structures such as wood rays and pipe holes, and when the thermal expansion particles are cured by ultraviolet light or heat, the thermal expansion particles are expanded by using the curing heat, so that the pore-shaped structures such as wood rays and pipe holes formed by printing of UV ink or original materials are corrected; and finally, in the cooling process, after the thermal expansion particles recover the size, taking out the thermal expansion particles by turning the plate and the like. Through the scheme, the problem that the shapes of the pore-shaped structures such as wood rays and pipe holes are inconsistent with the three-dimensional model obtained through actual scanning due to the inconsistency of the flowability of the UV ink or the raw material in each layer during laminated printing can be effectively solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (9)

1. A wooden floor surface coating method based on a 3D printing technology is characterized by sequentially comprising the following steps:
s1, surface treatment of the section bar (800);
s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model;
s3, according to the three-dimensional model, laminating and printing on the surface of the profile (800) to form a texture structure layer (100);
s4, UV printing on the texture structure layer (100) according to the color image information to form a texture pattern layer (200);
in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added;
in step S3, the following substeps are included:
s3-1, printing a 1 st layer to a 2 nd last layer or a 3 rd last layer on the surface of the profile (800) in a laminating way according to the three-dimensional model to form a basic texture structure layer (110);
s3-2, according to the three-dimensional model, using transparent or semi-transparent UV ink to print a 4 th layer or a 5 th layer to a last layer in a laminating way on the basic texture structure layer (110) so as to form a texture correction layer (120);
and according to the last layering of the three-dimensional model, printing thermal expansion particles on the uncured texture structure layer in a stacking mode, and then curing the texture structure layer.
2. The 3D printing technology based wood floor surface finishing method of claim 1, wherein the wear resistant raw material is one of alumina powder, silica powder, alumina stickies, or silica stickies.
3. The wood floor surface finishing method based on the 3D printing technology as claimed in claim 1, wherein the scan thickness of the target material section is 0.1 to 5mm in step S2.
4. The wood floor surface finishing method based on 3D printing technology of claim 1, wherein in step S3, a white UV ink is used for lamination printing and is cured by UV light to form the texture structure layer (100).
5. The wood floor surface finishing method based on 3D printing technology as claimed in claim 4, wherein the thickness of the texture structure layer (100) is 0.1-0.3 mm, and the layered thickness of the lamination printing is 20-30 μm.
6. The wood floor surface finishing method based on the 3D printing technology as claimed in claim 1, wherein in the step S3, the laminate printing is performed using a raw material, which is wood flour having a particle size of 20-50 μm, abrasion resistant powder including thermosetting resin, and heat curing is performed to form the texture structure layer (100).
7. The wood floor surface finishing method based on 3D printing technology as claimed in claim 6, wherein the thickness of the texture structure layer (100) is 2-5 mm, and the layered thickness of the lamination printing is 100-500 μm.
8. The method for finishing the surface of a wooden floor based on a 3D printing technology as claimed in claim 6, wherein the wear-resistant powder is Al203 powder or SiO2 powder, and the ratio of the addition amount of the wear-resistant powder to the addition amount of the wood flour is 1 (2-4).
9. The wood floor surface finishing method based on 3D printing technology as claimed in claim 1, wherein the thickness of the layer in the texture correction layer (120) is 20-30 μm.
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