Acrylic mosaic gold production process

Abstract

The invention discloses an acrylic mosaic gold production process, and relates to the technical field of acrylic mosaic gold production. Image processing software is used for manufacturing a layered source file, after a color window area and a non-color window area are defined, three types of PNG format files are exported in sequence, and the three types of PNG format files are a four-color-layer PNG file, a gold stamping layer PNG file and a white ink layer PNG file respectively; the four-color-layer PNG file adopts a CMYK color mode, and the resolution ratio is greater than or equal to 300DPI. The traditional complex combination of a printing machine and a large stamping machine is abandoned, and the printing machine and small cold stamping film covering equipment are matched for synchronous production, so that the equipment investment cost and the occupied area are reduced, meanwhile, the production continuity is improved, and the machining time is shortened; through layered file design, accurate superposition of colors and metal colors is achieved, the limitation of a traditional single metal color is broken through, and multiple mosaic gold and colored silver effects such as golden color, silver color, flash golden color and colorful golden color can be synchronously displayed on the same PET sheet or acrylic plate at a time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of acrylic color gold production, in particular to an acrylic color gold production process. BACKGROUND

[0002] With the improvement of market demand for product appearance decoration, single color or basic metal texture cannot meet the diversified needs, and the industry urgently needs a process scheme that can realize rich color gold effect (such as gold, silver, flash gold, and colorful gold) on acrylic material. At present, there is a gap in the related technology of acrylic product color gold effect, and the existing process cannot balance color diversity and production practicability, which restricts the application expansion of acrylic products in decoration, home furnishing, and cultural and creative fields.

[0003] Currently, acrylic product color presentation and metal texture realization mainly rely on two ways, both of which have obvious defects: single color printing: only ordinary color effect can be realized, and metal luster (such as gold and silver) cannot be presented, the product visual level is insufficient, and it is difficult to meet the needs of high-end decoration; traditional separate gold stamping process: it needs to be produced by cooperating with a printing machine and a large-scale gold stamping machine, and only single gold or silver effect can be displayed, the color diversity is poor; and the process is complicated (it needs to be operated multiple times), the positioning is difficult (it is easy to deviate), the processing cost is high (the investment and operation cost of large equipment is high), and the processing cycle is long (it takes a long time to connect multiple devices), which cannot adapt to the production scene of small batch and multi-color demand, and it is also difficult to realize multiple metal texture effects on the same acrylic product. SUMMARY

[0004] The present application provides an acrylic color gold production process to solve the problems raised in the background art.

[0005] To solve the above technical problems, the technical solution adopted by the present application is: An acrylic color gold production process, comprising S1; color gold effect layering file design: using image processing software to make layered source files, after clarifying the color window area and non-color window area, exporting three types of PNG format files in turn, which are 4-color layer PNG file, gold stamping layer PNG file, and white ink layer PNG file; the 4-color layer PNG file adopts CMYK color mode, the resolution is ≥300DPI, and it corresponds to the basic color pattern of the color window area; the gold stamping layer PNG file adopts special color channel design, the resolution is ≥300DPI, and it corresponds to the metal color pattern of the color window area, supporting matching different material cold stamping foils; the white ink layer PNG file adopts 100% gray mode, the resolution is ≥300DPI, and it corresponds to the bottoming or full coverage demand of the non-color window area, the white ink coverage rate is ≥95%; S2; production process execution: using a printing machine and a small cold stamping film coating device to produce synchronously, specifically including: S2.1; substrate pretreatment: PET sheet or acrylic plate is selected as the printing substrate, the thickness of the substrate is 1-5 mm, the surface of the substrate is wiped with anhydrous ethanol to remove oil stains and dust, and then dried; S2.2; printing process: the corresponding PNG file is imported into the printing machine, and 4 color layers or white ink layers are printed on the surface of the pretreated substrate, UV ink is used, and UV curing is performed after printing, the curing temperature is 50-60 DEG C, and the curing time is 10-25 s; S2.3; synchronous cold stamping process: the gold stamping layer PNG file is imported into the small cold stamping film equipment, the equipment is linked with the printing machine through the PLC control system, the metal color is cold stamped on the surface of the printing layer, the cold stamping pressure is 0.3-0.5 MPa, and the cold stamping temperature is 40-50 DEG C; S2.4; substrate bonding: executed as needed, if the printing substrate is a PET sheet, the printed PET sheet is bonded with the target substrate by using an environmentally friendly acrylic glue, the lamination pressure is 0.2-0.4 MPa, and the static curing time is 2-4 h; S2.5; cutting forming: a laser cutting machine is used to cut according to the product size, and the cutting accuracy is ±0.1 mm; S3; equipment linkage control: the synchronous alignment of the printing machine and the small cold stamping film equipment is realized through the PLC control system, the equipment operation parameters are adjusted in real time, and the alignment deviation of the printing layer and the cold stamping layer is ensured to be less than or equal to 0.1 mm.

[0006] The further improvement of the technical scheme of the application is that in S1, the number of spot color channels of the gold stamping layer PNG file is 1-4, which can match different cold stamping foils of different metal colors; the cold stamping foil is a PET-based cold stamping foil with a thickness of 10-15 μm, and the metal color includes at least two of gold color, silver color, flash gold color and dazzling gold color.

[0007] The further improvement of the technical scheme of the application is that in S2, the production process includes process one, and the process one is specifically: S2.1A; substrate pretreatment; same as S2.1; S2.2A; printing color window pattern: the 4 color layer PNG file is imported into the printing machine, the basic color pattern is printed on the color window area of the substrate, the UV curing temperature is 50-55 DEG C, the curing time is 10-20 s, and the color layer thickness is 8-10 μm; S2.3A; synchronous cold stamping metal color: the metal color is cold stamped on the surface of the color pattern, the cold stamping pressure is 0.3-0.4 MPa, the cold stamping temperature is 42-48 DEG C, and the bonding force between the cold stamping foil and the color layer is ensured to be greater than or equal to 3 MPa; S2.4A; printing non-color window part: the white ink layer PNG file is imported, and the white ink is printed on the non-color window area of the substrate, the UV curing temperature is 55-60 DEG C, the curing time is 15-25 s, and the white ink layer thickness is 12-15 μm; S2.5A; substrate adhesion, as needed, same as S2.4; S2.6A; cutting into shape, same as S2.5.

[0008] Further improvement of the technical scheme of the present application is that the production process in S2 further comprises process two, which is specifically: S2.1B; substrate pretreatment; same as S2.1; S2.2B; printing white ink primer: import white ink layer PNG file into the printing machine, print white ink on the surface of the substrate in full coverage, UV curing temperature 55-60℃, curing time 15-25s, white ink layer thickness 12-15μm; S2.3B; synchronous cold stamping of metal color: cold stamping of metal color on the surface of the white ink layer, cold stamping pressure 0.4-0.5MPa, cold stamping temperature 45-50℃, ensuring that the bonding force between the cold stamping foil and the white ink layer is ≥3.5MPa; S2.4B; printing color window pattern: import 4-color layer PNG file, print color pattern in the color window area of the metal color substrate, UV curing temperature 50-55℃, curing time 10-20s, color layer thickness 8-10μm; S2.5B; substrate adhesion: as needed, same as S2.4; S2.6B; cutting into shape: same as S2.5.

[0009] Further improvement of the technical scheme of the present application is that in S2, the printing machine is a UV flatbed printing machine or a silk screen printer; the adhesion of the UV ink is ≥4MPa, and the friction resistance level is ≥4 levels; the small cold stamping film coating equipment is a desktop structure with a volume ≤0.8m×0.6m×0.5m.

[0010] Further improvement of the technical scheme of the present application is that in S2, the environmentally friendly acrylic glue is a solvent-free acrylic ester glue with a viscosity of 2000-3000mPa・s and a shear strength ≥5MPa after curing; the thickness of the target substrate is 2-10mm, and the bonding surface needs to be slightly polished with 400-600 mesh sandpaper before being attached to enhance the adhesion strength.

[0011] Further improvement of the technical scheme of the present application is that in S2, the laser cutting machine is a fiber laser cutting machine with a cutting speed of 50-100mm / s and no burr on the cutting edge; the finished product after cutting needs to be cleaned on the surface, and compressed air is used to blow off the cutting dust to avoid the influence of dust adhesion on the color gold effect.

[0012] Further improvement of the technical scheme of the present application is that in S1, the boundary accuracy of the color window area and the non-color window area of the layered source file is ≤0.05mm; in S2, the glossiness of the printed layer surface after UV curing is measured at an angle of 60°, and the glossiness is ≥80°.

[0013] Further improvement of the technical scheme of the present application is that the small cold stamping film coating equipment comprises The support mechanism comprises a mounting table, the surface of the mounting table is provided with a guide roller, the inner wall of the mounting table is fixedly connected with a downward pressing cylinder, the output end of the downward pressing cylinder is fixedly connected with a lifting frame, the surface of the lifting frame is rotatably connected with an upper pressing roller, a lower pressing roller is arranged below the upper pressing roller, a temperature control module with a temperature of 40-50 DEG C is arranged in the roller body, a visual positioning camera is arranged above the pressing unit, the printing layer pattern is captured in real time, and the cold stamping foil and the printing layer are accurately positioned. The film coating mechanism comprises a first motor, one end of the rotating shaft of the first motor is fixedly connected with a screw rod, the surface of the screw rod is threadedly connected with a driving piece, the inner part of the two ends of the driving piece is slidably connected with a sliding rail, the bottom of the sliding rail is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a cold stamping foil unwinding assembly, a tension adjusting assembly and a waste material winding assembly.

[0014] Further improvement of the technical scheme of the present application is that the cold stamping foil unwinding assembly comprises a first fixed plate and a second fixed plate, the top of the first fixed plate and the second fixed plate is fixedly connected with the bottom of the mounting plate, one side of the first fixed plate is fixedly connected with a second motor, one end of the rotating shaft of the second motor is fixedly connected with a first clamping plate, one side of the second fixed plate is fixedly connected with a clamping cylinder, the output end of the clamping cylinder is rotatably connected with a second clamping plate, the structure of the cold stamping foil unwinding assembly is same as that of the waste material winding assembly, the tension adjusting assembly comprises a connecting plate, the top of the connecting plate is fixedly connected with the bottom of the mounting plate, one side of the connecting plate is rotatably connected with a guide roller, one side of the connecting plate is fixedly connected with a sliding groove, the inner wall of the sliding groove is slidably connected with a sliding block, the end of the sliding block is fixedly connected with a spring, one end of the spring is fixedly connected with the end of the inner cavity of the sliding groove, and one side of the sliding block is rotatably connected with a tension adjusting roller.

[0015] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art: The present application provides a kind of acrylic color gold production process, by abandoning the complex combination of traditional " printing machine + large gold stamping machine ", using " printing machine + small cold gold stamping film equipment " matched synchronous production, reduce equipment investment cost and floor area, while improving production continuity, shorten processing time;By layered file design, realize the accurate superposition of color and metal color, break through the limitation of traditional single metal color, can be simultaneously exhibited on the same PET sheet or acrylic plate gold color, silver color, flash gold color, multi-color gold, color silver effect such as one-time;Design two kinds of core production process, process is simple and accurate, and the position is supported simultaneously multiple material combination, color gold effect can be printed on PET sheet or acrylic plate, also can be after printing PET sheet and acrylic, wood and other substrates are bonded, adapt to different product application scenarios;By " color and metal color direct mixing printing " instead of traditional " separate gold stamping superposition ", while improving color richness, reduce process steps and material loss, reduce total production cost, fill in " same acrylic material cannot simultaneously exhibit multiple color gold effect " technical blank. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 For the process flow diagram of the present application; Figure 2 For step S2 of the present application;Production process execution flow chart; Figure 3 For the process one and process two step diagram of the present application; Figure 4 For the structure diagram of small cold gold stamping film equipment of the present application; Figure 5 For the structure diagram of small cold gold stamping film equipment of the present application; Figure 6 For the internal structure diagram of small cold gold stamping film equipment of the present application; Figure 7 For the structure diagram of film coating mechanism of the present application; Figure 8 For the structure diagram of film coating mechanism of the present application; Figure 9 For the structure diagram of cold gold foil unwinding assembly and tension adjusting assembly of the present application; Figure 10 For the structure diagram of tension adjusting assembly of the present application; Figure 11 For the structure diagram of cold gold foil unwinding assembly of the present application.

[0017] In the figure: 11, installation platform; 12, guide roller; 13, down-press cylinder; 14, lifting frame; 15, upper press roller; 16, lower press roller; 21, first motor; 22, screw rod; 23, driving piece; 24, slide rail; 25, installation plate; 26, cold foiling unwinding assembly; 261, first fixed plate; 262, second motor; 263, first clamping plate; 264, second fixed plate; 265, clamping cylinder; 266, second clamping plate; 27, tension adjusting assembly; 271, connecting plate; 272, guide roller; 273, slide groove; 274, slide block; 275, spring; 276, tension adjusting roller; 28, waste material winding assembly. DETAILED DESCRIPTION

[0018] The application will be further described in detail below in connection with examples: Example one, as Figures 1-11As shown, the present application provides a production process of acrylic color gold, comprising S1; color gold effect layering file design: using image processing software to make layering source files, after clearly defining the color window area and non-color window area, sequentially exporting three types of PNG format files, which are 4-color layer PNG file, gold stamping layer PNG file, and white ink layer PNG file; the 4-color layer PNG file adopts CMYK color mode, resolution ≥ 300 DPI, and corresponds to the basic color pattern of the color window area; the gold stamping layer PNG file adopts special color channel design, resolution ≥ 300 DPI, and corresponds to the metal color pattern of the color window area, supporting matching cold stamping foils of different materials; the white ink layer PNG file adopts 100% gray mode, resolution ≥ 300 DPI, and corresponds to the bottoming or full coverage requirement of the non-color window area, with white ink coverage ≥ 95%; S2; production process execution: adopting a printing machine and a small cold stamping film coating equipment to produce synchronously, specifically comprising: S2.1; substrate pretreatment: selecting PET sheet or acrylic plate as the printing substrate, with a thickness of 1-5 mm, wiping the substrate surface with anhydrous ethanol to remove oil stains and dust, and then air drying; S2.2; printing procedure: importing the corresponding PNG file into the printing machine to print the 4-color layer or white ink layer on the pretreated substrate surface, using UV ink, and performing UV curing after printing, with a curing temperature of 50-60℃ and a curing time of 10-25 s; S2.3; synchronous cold stamping procedure: importing the gold stamping layer PNG file into the small cold stamping film coating equipment, and linking the equipment and the printing machine through a PLC control system to cold stamp the metal color on the printing layer, with a cold stamping pressure of 0.3-0.5 MPa and a cold stamping temperature of 40-50℃; S2.4; substrate bonding: performing as needed, if the printing substrate is PET sheet, bonding the printed PET sheet and the target substrate with environmentally friendly acrylic glue, with a bonding pressure of 0.2-0.4 MPa and a standing curing time of 2-4 h; S2.5; cutting forming: cutting according to the product size using a laser cutting machine, with a cutting accuracy of ±0.1 mm; S3; equipment linkage control: realizing the synchronous alignment of the printing machine and the small cold stamping film coating equipment through a PLC control system, adjusting the equipment operation parameters in real time, and ensuring that the alignment deviation of the printing layer and the cold stamping layer is ≤0.1 mm.

[0019] In this embodiment, by using image processing software such as Photoshop, AI, a layered source file is constructed, first, the "color window area, which needs to fuse color and metal color" and "non-color window area, which needs to be white inked" of the product are determined, and the boundary accuracy of the two types of areas is ensured to be ≤0.05mm, avoiding subsequent printing misplacement. Then, three types of high-resolution PNG files are exported according to process requirements: 4-color layer PNG file: using CMYK color mode, corresponding to the basic color pattern of the color window area, providing a color base for metal color superposition, ensuring that the color and gold effect after subsequent cold foiling is naturally fused; gold layer PNG file: designed through 1-4 special color channels, each channel corresponds to one metal color, at least two of gold color, silver color, flash gold color, and fancy gold color, which can match different thickness 10-15μm PET substrate cold foiling, realize precise layout of multiple metal colors in the same color window area; white ink layer PNG file: using 100% gray mode, covering the non-color window area with coverage ≥95%, which can not only avoid the influence of substrate base color on color gold effect, but also enhance the adhesion of metal color layer and substrate. Production process execution stage S2: "printing-cold foiling-treatment" cooperatively realizes the color gold effect; substrate pretreatment S2.1 / S2.1A / S2.1B: to ensure the adhesion of printing and cold foiling, select PET sheet with thickness of 0.1-0.5mm or acrylic plate with thickness of 1-5mm as the printing substrate, wipe the substrate surface with anhydrous ethanol-ethanol can efficiently remove oil and dust, and volatilize quickly without residue, avoiding ink / cold foiling falling off due to impurities during subsequent printing; after wiping, dry naturally to ensure the substrate surface is dry, providing a clean substrate for printing and cold foiling. Printing process S2.2 / S2.2A / S2.2B: complete color or white ink layer printing as needed, according to the two core production processes, execute the corresponding printing operation through UV flatbed printer or silk screen printer.

[0020] Example two, as Figures 1-11As shown, on the basis of embodiment one, the application provides a technical solution: preferably, in S1, the number of spot color channels of the gilding layer PNG file is 1-4, which can match different metal colors of cold gilding foil; the cold gilding foil is a PET-based cold gilding foil with a thickness of 10-15 μm, and the metal colors include at least two of gold color, silver color, flash gold color and dazzling gold color, and the production process in S2 includes process one, and process one is specifically: S2.1A; substrate pretreatment; same as S2.1; S2.2A; printing color window pattern: importing a 4-color layer PNG file into a printing machine to print a basic color pattern in the color window area of the substrate, UV curing temperature is 50-55℃, curing time is 10-20s, and the color layer thickness is 8-10 μm; S2.3A; synchronously cold gilding metal color: cold gilding metal color on the surface of the color pattern, cold gilding pressure is 0.3-0.4 MPa, cold gilding temperature is 42-48℃, and the bonding strength between the cold gilding foil and the color layer is ensured to be ≥3 MPa; S2.4A; printing non-color window part: importing a white ink layer PNG file to print white ink in the non-color window area of the substrate, UV curing temperature is 55-60℃, curing time is 15-25s, and the white ink layer thickness is 12-15 μm; S2.5A; substrate bonding, executed as required, same as S2.4; S2.6A; cutting forming, same as S2.5, in S2, the printing machine is a UV flatbed printing machine or a silk screen printing machine; the adhesion of the UV ink is ≥4 MPa, and the friction resistance level is ≥4 levels; the small cold gilding film coating equipment is a desktop structure with a volume of ≤0.8 m×0.6 m×0.5 m, in S2, the environment-friendly acrylic adhesive is a solvent-free acrylic ester adhesive with a viscosity of 2000-3000 mPa・s and a shear strength after curing of ≥5 MPa; the thickness of the target substrate is 2-10 mm, and the bonding surface needs to be slightly polished with 400-600 mesh sandpaper before being attached to enhance the bonding strength, in S2, the laser cutting machine is a fiber laser cutting machine with a cutting speed of 50-100 mm / s and a cutting edge without burrs; the finished product after cutting needs to be cleaned, and compressed air is used to blow off cutting dust to avoid the influence of dust adhesion on the color gold effect, in S1, the boundary accuracy between the color window area and the non-color window area of the layered source file is ≤0.05 mm; and in S2, the gloss of the printing layer after UV curing is measured at an angle of 60°, and the gloss is ≥80°.

[0021] In this embodiment, through the synchronous cold pressing process S2.3 / S2.3A / S2.3B: small equipment linkage realizes multi-metal color cold pressing, small desktop cold pressing film equipment is linked with the PLC of the printing machine, the guide roller 12 on the surface of the installation table 11 first stably transports the printed substrate to the cold pressing area; then the lower pressing cylinder 13 in the inner wall of the installation table drives the lifting frame 14 to descend, drives the upper pressing roller 15 to approach the lower pressing roller 16 below, and forms a cold pressing pressing gap. The foil feeding mechanism and tension control: the first motor 21 drives the screw 22 to rotate, so that the driving part 23 connected by threads moves along the slide rail 24, drives the cold pressing foil unwinding assembly 26 and the tension adjusting assembly 27 below the installation plate 25 to move synchronously, and adapts to the position of the color window area on the substrate; the second motor 262 on the first fixed plate 261 drives the first clamping plate 263 to rotate, while the clamping cylinder 265 on the second fixed plate 264 pushes the second clamping plate 266 to clamp the cold pressing foil roll, after the cold pressing foil is guided by the guide roller 272, it passes through the tension adjusting roller 276 - if the tension of the cold pressing foil is too large, it will push the sliding block 274 to compress the spring 275 along the sliding groove 273; if the tension is too small, the spring will return to drive the sliding block to reset, and the spring force is used to adjust the tension in real time to keep 0.5-1N, so as to avoid stretching deformation or relaxation wrinkles of the cold pressing foil; the waste material winding assembly 28 has the same structure as the unwinding assembly, and synchronously recovers the waste foil substrate after cold pressing, so as to avoid the influence of waste material accumulation on production. Adjust the cold pressing parameters according to the type of the printing layer: process one; cold pressing on the color layer: cold pressing pressure 0.3-0.4MPa, temperature 42-48℃, to ensure that the cold pressing foil and the color layer have a bonding force≥3MPa; process one; color window first printing color: import the 4-color layer PNG file into the printing machine, only print the basic color pattern in the color window area of the substrate, immediately enter the UV curing module after printing, control the curing temperature at 50-55℃, avoid substrate deformation, curing time 10-20s, finally form a color layer with a thickness of 8-10μm, ensure that the color layer is completely dry and tightly combined with the substrate; then import the white ink layer PNG file, print white ink in the non-color window area, the UV curing temperature is increased to 55-60℃, the white ink needs higher curing strength, the curing time is 15-25s, and a white ink layer with a thickness of 12-15μm is formed.

[0022] Example three, as Figures 1-11As shown, on the basis of embodiment one, the application provides a technical solution: preferably, the production process in S2 also includes process two, which is specifically: S2.1B; substrate pretreatment; same as S2.1; S2.2B; print white ink primer: import white ink layer PNG file into the printer, print white ink on the surface of the substrate, UV curing temperature 55-60℃, curing time 15-25s, white ink layer thickness 12-15μm; S2.3B; synchronous cold metal color: cold metal color on the surface of the white ink layer, cold stamping pressure 0.4-0.5MPa, cold stamping temperature 45-50℃, ensure the bonding force of cold stamping foil and white ink layer ≥3.5MPa; S2.4B; print color window pattern: import 4 color layer PNG file, print color pattern in the color window area of the metal color substrate, UV curing temperature 50-55℃, curing time 10-20s, color layer thickness 8-10μm; S2.5B; substrate bonding: execute as needed, same as S2.4; S2.6B; cutting forming: same as S2.5, small cold stamping laminating equipment includes supporting mechanism, supporting mechanism includes mounting table 11, the surface of mounting table 11 is provided with guide roller 12, the inner wall of mounting table 11 is fixedly connected with down pressure cylinder 13, the output end of down pressure cylinder 13 is fixedly connected with lifting frame 14, the surface of lifting frame 14 is rotatably connected with upper pressure roller 15, the lower side of upper pressure roller 15 is provided with lower pressure roller 16, the roller body is built-in 40-50℃ temperature control module, the upper side of the pressing unit is provided with visual positioning camera, which can capture the printed layer pattern in real time and ensure the accurate positioning of the cold stamping foil and the printed layer; laminating mechanism, laminating mechanism includes first motor 21, one end of the rotating shaft of first motor 21 is fixedly connected with screw rod 22, the surface of screw rod 22 is threadedly connected with driving piece 23, the inner sides of the two ends of driving piece 23 are slidably connected with slide rail 24, the bottom of slide rail 24 is fixedly connected with mounting plate 25, the bottom of mounting plate 25 is fixedly connected with cold stamping foil unwinding assembly 26, tension adjusting assembly 27 and waste material winding assembly 28, cold stamping foil unwinding assembly 26 includes first fixed plate 261 and second fixed plate 264, the top of first fixed plate 261 and second fixed plate 264 is fixedly connected with the bottom of mounting plate 25, one side of first fixed plate 261 is fixedly connected with second motor 262, one end of the rotating shaft of second motor 262 is fixedly connected with first clamping plate 263, one side of second fixed plate 264 is fixedly connected with clamping cylinder 265, the output end of clamping cylinder 265 is rotatably connected with second clamping plate 266, the structure of cold stamping foil unwinding assembly 26 is same as waste material winding assembly 28, tension adjusting assembly 27 includes connecting plate 271, the top of connecting plate 271 is fixedly connected with the bottom of mounting plate 25, one side of connecting plate 271 is rotatably connected with guide roller 272, one side of connecting plate 271 is fixedly connected with sliding groove 273, the inner wall of sliding groove 273 is slidably connected with sliding block 274, one end of spring 275 is fixedly connected with the end of the inner cavity of sliding groove 273, one side of sliding block 274 is rotatably connected with tension adjusting roller 276.

[0023] In this embodiment, by process two; first print white ink base: first import the white ink layer PNG file into the printer, print white ink on the surface of the substrate full coverage, UV curing parameters consistent with process one non-color window area, 55-60℃, 15-25s, thickness 12-15μm, white ink layer can enhance the subsequent metal color hiding power and adhesion; then import 4 color layer PNG file, print color patterns in the color window area of the metal color base, UV curing parameters consistent with process one color layer, 50-55℃, 10-20s, thickness 8-10μm. After the curing of the printed layers of the two processes, the gloss measured at 60° is ≥80°, ensuring the visual quality of the product, cold foiling on the white ink layer: cold foiling pressure 0.4-0.5MPa, temperature 45-50℃, white ink layer is slightly thick, higher pressure and temperature are needed to enhance the combination, ensuring the bonding force ≥3.5MPa; during the cold foiling process, the cold foiling foil and the printed layer are accurately aligned, without missing foiling and bubbles. Substrate bonding S2.4 / S2.5A / S2.5B: expand the substrate adaptation scenario as needed, if the printed substrate is a PET sheet, the post-printing PET sheet needs to be bonded with the target substrate, such as acrylic plate, wood, density board, etc., with a thickness of 2-10mm: first lightly sand the target substrate with 400-600 mesh sandpaper to increase the surface roughness and enhance the bonding area, then apply a solvent-free acrylic adhesive with a viscosity of 2000-3000mPa・s, environmentally friendly and odorless; then bond the PET sheet with the target substrate, apply a bonding pressure of 0.2-0.4MPa to ensure uniform diffusion of the adhesive layer without bubbles, and let it stand for 2-4h after curing, the shear strength of the adhesive layer after curing is ≥5MPa, avoiding the PET sheet from falling off during long-term use, cutting S2.5 / S2.6A / S2.6B: precise shaping and ensuring color gold effect, use a fiber laser cutting machine with a cutting speed of 50-100mm / s and an accuracy of ±0.1mm, set the cutting path according to the product size, laser cutting without mechanical stress, which can avoid the color gold layer from falling off due to extrusion, and the cutting edge has no burrs; after cutting, use 0.1-0.2MPa compressed air to blow off the surface dust, finally get the acrylic finished product with multi-color gold effect. Device linkage control stage S3; through the PLC control system to establish the signal linkage between the printer and the small cold foiling laminating equipment: speed synchronization: real-time receive the substrate conveying speed signal of the printer 0.5-2m / min, synchronize the conveying speed of the guide roller and the unwinding speed of the cold foiling foil of the cold foiling equipment, avoid the cold foiling misalignment caused by speed difference; position calibration: real-time monitor the alignment deviation of the printed layer and the cold foiling foil, automatically adjust the position of the cold foiling foil unwinding assembly, ensure the alignment deviation of the printed layer and the cold foiling layer ≤0.1mm; parameter linkage: if the printer adjusts the UV curing temperature / time, the PLC will prompt whether the cold foiling equipment needs to be adjusted, if the printed layer curing temperature is increased, the cold foiling temperature can be adjusted slightly lower to avoid overheating of the substrate, realize the collaborative optimization of the whole process parameters.

[0024] The working principle of the production process of the acrylic color gold is described in detail below.

[0025] As Figures 1-11As shown, first use image processing software such as Photoshop, AI to build layered source files, first clear product "color window area, need to integrate color and metal color" and "non-color window area, need white ink to lay the foundation / cover", ensure that the boundary accuracy of the two types of areas is ≤0.05mm, avoid subsequent printing misplacement. Then export three types of high-resolution PNG files according to process requirements: 4-color layer PNG file: use CMYK color mode, corresponding to the basic color pattern of the color window area, provide color base for metal color superposition, ensure that the color and metal effect after subsequent cold foiling is naturally integrated; Foil layer PNG file: design through 1-4 special color channels, each channel corresponds to one metal color, at least two of gold, silver, flash gold, and color gold, which can match different thickness 10-15μm PET substrate cold foiling foil, realize precise layout of multiple metal colors in the same color window area; White ink layer PNG file: use 100% gray mode, cover non-color window area and coverage ≥95%, avoid the influence of substrate base color on color gold effect, and enhance the adhesion of metal color layer and substrate. Production process execution stage S2: "printing-cold foiling-treatment" cooperatively realizes color gold effect; Substrate pretreatment S2.1 / S2.1A / S2.1B: ensure printing and cold foiling adhesion Select thickness 0.1-0.5mm PET sheet or thickness 1-5mm acrylic plate as printing substrate, wipe the substrate surface with anhydrous ethanol-ethanol can efficiently remove oil and dust, and volatilize quickly without residue, avoid ink / cold foiling foil falling off due to impurities during subsequent printing; After wiping, dry naturally, ensure that the substrate surface is dry, provide a clean substrate for printing and cold foiling. Printing process S2.2 / S2.2A / S2.2B: complete color or white ink layer printing as needed, according to two core production processes, through UV flatbed printer or silk screen printer, execute corresponding printing operation: Process one; Color window first prints color: import 4-color layer PNG file into the printer, only print basic color pattern in the color window area of the substrate, immediately enter the UV curing module after printing, control the curing temperature at 50-55℃ to avoid substrate deformation, the curing time is 10-20s, finally form a color layer with a thickness of 8-10μm, ensure that the color layer is completely dry and tightly combined with the substrate; Then import the white ink layer PNG file, print white ink in the non-color window area, the UV curing temperature is increased to 55-60℃, white ink needs higher curing strength, the curing time is 15-25s, forming a white ink layer with a thickness of 12-15μm. Process two; First print white ink to lay the foundation: first import the white ink layer PNG file into the printer, print white ink on the substrate surface, the UV curing parameters are consistent with those of the non-color window area in process one, 55-60℃, 15-25s, thickness 12-15μm, the white ink layer can enhance the covering power and adhesion of the subsequent metal color; Then import the 4-color layer PNG file, print color pattern in the metal color base color window area, the UV curing parameters are consistent with those of the color layer in process one, 50-55℃, 10-20s, thickness 8-10μm.After the printed layer of the two processes is solidified, the gloss at 60° is ≥80°, ensuring the visual quality of the product. The simultaneous cold stamping process S2.3 / S2.3A / S2.3B: Small equipment linkage realizes multi-metal color cold stamping. The small desktop cold stamping film equipment is linked with the PLC of the printing machine. The guide roller 12 on the surface of the installation table 11 first stably transports the printed substrate to the cold stamping area; then the lower pressing cylinder 13 on the inner wall of the installation table drives the lifting frame 14 to descend, driving the upper pressing roller 15 to approach the lower pressing roller 16 below, forming a cold stamping pressing gap. The film feeding mechanism and tension control: the first motor 21 drives the screw 22 to rotate, so that the driving part 23 connected by threads moves along the slide rail 24, driving the cold stamping foil unwinding assembly 26 and the tension adjusting assembly 27 below the installation plate 25 to move synchronously, adapting to the position of the colored window area on the substrate; the second motor 262 on the first fixed plate 261 drives the first clamping plate 263 to rotate, while the clamping cylinder 265 on the second fixed plate 264 pushes the second clamping plate 266 to clamp the cold stamping foil roll; after the cold stamping foil is guided by the guide roller 272, it passes through the tension adjusting roller 276; if the cold stamping foil tension is too large, it will push the sliding block 274 to compress the spring 275 along the sliding groove 273; if the tension is too small, the spring will return to drive the sliding block to reset, and the spring force will adjust the tension to 0.5-1N in real time, avoiding cold stamping foil stretching deformation or slack wrinkles; the waste material winding assembly 28 has the same structure as the unwinding assembly, and synchronously recycles the waste foil substrate after cold stamping, avoiding the accumulation of waste materials affecting production. Adjust the cold stamping parameters according to the type of the printed layer: Process one; cold stamping on the color layer: cold stamping pressure 0.3-0.4MPa, temperature 42-48℃, ensuring that the cold stamping foil and the color layer have a bonding force ≥3MPa; Process two; cold stamping on the white ink layer: cold stamping pressure 0.4-0.5MPa, temperature 45-50℃, the white ink layer is slightly thicker, and higher pressure and temperature are needed to enhance the bonding, ensuring that the bonding force is ≥3.5MPa; During the cold stamping process, the cold stamping foil and the printed layer are accurately aligned, without missing stamping and bubbles.Substrate bonding S2.4 / S2.5A / S2.5B: expand the substrate adaptation scene as needed, if the printed substrate is a PET sheet, the post-printed PET sheet needs to be bonded with the target substrate, such as an acrylic plate, wood, density board, etc., with a thickness of 2-10 mm. First, use 400-600 mesh sandpaper to lightly polish the bonding surface of the target substrate to increase the surface roughness and enhance the bonding area. Then apply a solvent-free acrylic ester glue with a viscosity of 2000-3000 mPa·s, which is environmentally friendly and odorless. Then bond the PET sheet with the target substrate, apply a bonding pressure of 0.2-0.4 MPa to ensure uniform diffusion of the glue layer without air bubbles, and let it stand for 2-4 h. The shear strength of the cured glue layer is ≥5 MPa, which prevents the PET sheet from falling off during long-term use. Cutting S2.5 / S2.6A / S2.6B: precise shaping and ensuring color gold effect, using a fiber laser cutting machine with a cutting speed of 50-100 mm / s and an accuracy of ±0.1 mm, set the cutting path according to the product size. Laser cutting has no mechanical stress, which can avoid the color gold layer from falling off due to extrusion, and the cutting edge has no burrs. After cutting, use 0.1-0.2 MPa compressed air to blow off the surface dust, and finally get the finished acrylic product with multi-color gold effect. Device linkage control stage S3; through the PLC control system, establish the signal linkage between the printing machine and the small cold stamping film equipment: speed synchronization: real-time receive the substrate conveying speed signal of the printing machine 0.5-2 m / min, synchronize the conveying speed of the guide roller of the cold stamping equipment and the unwinding speed of the cold stamping foil, avoid the cold stamping misalignment caused by speed difference; position calibration: real-time monitor the alignment deviation of the printing layer and the cold stamping foil, automatically adjust the position of the cold stamping foil unwinding assembly, ensure that the alignment deviation of the printing layer and the cold stamping layer is ≤0.1 mm; parameter linkage: if the printing machine adjusts the UV curing temperature / time, the PLC will synchronously prompt whether the cold stamping equipment needs to be adjusted, such as increasing the printing layer curing temperature, the cold stamping temperature can be slightly adjusted to reduce, avoid overheating of the substrate, realize the parameter collaborative optimization of the whole process.

[0026] The above has made a detailed description of the present application in general, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the scope of the present application.

Claims

1. A process for producing acrylic colored gold, characterized in that: include S1； Layered file design for chromatic gold effect: Use image processing software to create layered source files. After clearly defining the chromatic area and non-chromatic area, export three types of PNG format files in sequence: 4-color layer PNG file, hot foil layer PNG file, and white ink layer PNG file. The 4-color layer PNG file adopts the CMYK color mode, with a resolution of ≥300DPI, and corresponds to the basic color pattern of the stained glass area; The hot stamping layer PNG file uses a spot color channel design with a resolution of ≥300 DPI, corresponding to the metallic pattern in the stained glass area, and supports matching different cold stamping foil materials; the white ink layer PNG file uses 100% grayscale mode with a resolution of ≥300 DPI, corresponding to the base or full coverage needs of non-stained glass areas, with a white ink coverage rate of ≥95%; S2; Production Process execution: Simultaneous production is achieved using a printing press and a small-scale cold foil stamping and laminating equipment, specifically including: S2.1; Substrate pretreatment: Select PET sheet or acrylic sheet as printing substrate, with a substrate thickness of 1-5mm. Wipe the substrate surface with anhydrous ethanol to remove oil and dust, and then let it dry. S2.2; Printing process: Import the corresponding PNG file into the printing machine, print 4-color layers or white ink layers on the pretreated substrate surface, use UV ink, and perform UV curing after printing. The curing temperature is 50-60℃ and the curing time is 10-25s. S2.3; Synchronous cold foil stamping process: Import the PNG file of the hot foil stamping layer into a small cold foil stamping laminating equipment. The equipment and the printing press are linked through a PLC control system to cold foil stamp the metallic color on the surface of the printed layer. The cold foil stamping pressure is 0.3-0.5MPa and the cold foil stamping temperature is 40-50℃. S2.4; Substrate bonding: Perform as needed. If the printing substrate is a PET sheet, use environmentally friendly acrylic adhesive to bond the printed PET sheet to the target substrate. The bonding pressure is 0.2-0.4 MPa, and the substrate is allowed to cure for 2-4 hours. S2.5; Cutting and shaping: Laser cutting machine is used to cut according to product size, with a cutting accuracy of ±0.1mm; S3; Equipment linkage control: The PLC control system realizes the synchronous alignment of the printing press and the small cold foil laminating equipment, and adjusts the equipment operating parameters in real time to ensure that the registration deviation between the printed layer and the cold foil layer is ≤0.1mm.

2. The acrylic gold foil production process according to claim 1, characterized in that: In S1, the number of spot color channels in the hot stamping layer PNG file is 1-4, which can be matched with cold stamping foil of different metallic colors respectively; the cold stamping foil is a PET base cold stamping foil with a thickness of 10-15μm, and the metallic color includes at least two of gold, silver, shimmering gold, and iridescent gold.

3. The acrylic gold foil production process according to claim 1, characterized in that: The production process in S2 includes process one, which specifically includes: S2.1A; Substrate pretreatment; Same as S2.1; S2.2A; Printing stained glass patterns: Import the 4-color layer PNG file into the printing press, print the basic color pattern on the stained glass area of ​​the substrate, UV curing temperature 50-55℃, curing time 10-20s, color layer thickness 8-10μm; S2.3A; Synchronous cold foil stamping with metallic color: Apply metallic color to the surface of the colored pattern with cold foil stamping pressure of 0.3-0.4MPa and cold foil stamping temperature of 42-48℃, ensuring that the bonding force between the cold foil and the colored layer is ≥3MPa; S2.4A; Printing non-colored window areas: Import the white ink layer PNG file, print white ink on the non-colored window areas of the substrate, UV curing temperature 55-60℃, curing time 15-25s, white ink layer thickness 12-15μm; S2.5A; Substrate bonding, to be performed as required, same as S2.4; S2.6A; Cutting and shaping, same as S2.

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4. The acrylic gold foil production process according to claim 1, characterized in that: The production process in S2 also includes process two, which specifically includes: S2.1B; Substrate pretreatment; Same as S2.1; S2.2B; Printing white ink base: Import the white ink layer PNG file into the printing machine, print white ink to fully cover the surface of the substrate, UV curing temperature 55-60℃, curing time 15-25s, white ink layer thickness 12-15μm; S2.3B; Synchronous cold foil stamping with metallic color: Apply metallic color cold foil to the surface of the white ink layer, with a cold foil stamping pressure of 0.4-0.5MPa and a cold foil stamping temperature of 45-50℃, ensuring that the bonding force between the cold foil and the white ink layer is ≥3.5MPa; S2.4B; Printing stained glass patterns: Import a 4-color layer PNG file, print the colored pattern on the stained glass area of ​​the metallic base, UV curing temperature 50-55℃, curing time 10-20s, color layer thickness 8-10μm; S2.5B; Substrate bonding: Perform as needed, same as S2.4; S2.6B; Cutting and shaping: Same as S2.

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5. The acrylic gold foil production process according to claim 1, characterized in that: In S2, the printing machine is a UV flatbed printing machine or a screen printing machine; the UV ink has an adhesion of ≥4MPa and a friction resistance level of ≥4; the small cold foil stamping equipment is a desktop structure with a volume of ≤0.8m×0.6m×0.5m.

6. The acrylic gold foil production process according to claim 1, characterized in that: In S2, the environmentally friendly acrylic adhesive is a solvent-free acrylate adhesive with a viscosity of 2000-3000 mPa·s and a shear strength ≥5 MPa after curing; the thickness of the target substrate is 2-10 mm, and the bonding surface needs to be lightly sanded with 400-600 grit sandpaper before bonding to enhance the bonding strength.

7. The acrylic gold foil production process according to claim 1, characterized in that: In S2, the laser cutting machine is a fiber laser cutting machine with a cutting speed of 50-100mm / s and no burrs on the cutting edge. The finished product after cutting needs to be cleaned by blowing away the cutting dust with compressed air to avoid dust adhesion affecting the gilding effect.

8. The acrylic gold foil production process according to claim 1, characterized in that: In S1, the boundary accuracy between the colored window area and the non-colored window area of ​​the layered source file is ≤0.05mm; in S2, the gloss of the UV-cured printed layer surface is measured at a 60° angle and is ≥80°.

9. The acrylic gold foil production process according to claim 1, characterized in that: The small-scale cold-stamping and laminating equipment includes The support mechanism includes a mounting platform (11), a guide roller (12) is provided on the surface of the mounting platform (11), a pressing cylinder (13) is fixedly connected to the inner wall of the mounting platform (11), a lifting frame (14) is fixedly connected to the output end of the pressing cylinder (13), an upper pressing roller (15) is rotatably connected to the surface of the lifting frame (14), and a lower pressing roller (16) is provided below the upper pressing roller (15). The roller body has a built-in 40-50℃ adjustable temperature control module, and a visual positioning camera is provided above the pressing unit to capture the printing layer pattern in real time to ensure accurate alignment between the cold foil and the printing layer. The coating mechanism includes a first motor (21), one end of the shaft of the first motor (21) is fixedly connected to a screw (22), the surface of the screw (22) is threadedly connected to a drive member (23), the two ends of the drive member (23) are internally slidably connected to slide rails (24), the bottom of the slide rails (24) is fixedly connected to a mounting plate (25), and the bottom of the mounting plate (25) is fixedly connected to a cold foil unwinding assembly (26), a tension adjusting assembly (27) and a waste material winding assembly (28).

10. The acrylic gold foil production process according to claim 9, characterized in that: The cold foil unwinding assembly (26) includes a first fixing plate (261) and a second fixing plate (264). The tops of the first fixing plate (261) and the second fixing plate (264) are fixedly connected to the bottom of the mounting plate (25). A second motor (262) is fixedly connected to one side of the first fixing plate (261). A first clamping plate (263) is fixedly connected to one end of the shaft of the second motor (262). A clamping cylinder (265) is fixedly connected to one side of the second fixing plate (264). The output end of the clamping cylinder (265) is rotatably connected to the second clamping plate (266). The structure of the cold foil unwinding assembly (26) is similar to that of the waste collection assembly. Similar to the winding assembly (28), the tension adjustment assembly (27) includes a connecting plate (271), the top of the connecting plate (271) is fixedly connected to the bottom of the mounting plate (25), a guide roller (272) is rotatably connected to one side of the connecting plate (271), a slide groove (273) is fixedly connected to one side of the connecting plate (271), a slider (274) is slidably connected to the inner wall of the slide groove (273), a spring (275) is fixedly connected to the end of the slider (274), one end of the spring (275) is fixedly connected to the end of the inner cavity of the slide groove (273), and a tension adjustment roller (276) is rotatably connected to one side of the slider (274).

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