Paper-cut art and 3D printing fused novel cultural and creative product manufacturing process

Abstract

The invention discloses a paper-cut art and 3D printing fused novel cultural and creative product manufacturing technology, and relates to the technical field of cultural and creative manufacturing, and the technology comprises the following steps: 1, obtaining the point cloud data of a traditional paper-cut pattern through high-precision 3D scanning (the resolution is less than 0.01 mm), carrying out the three-dimensional topology expansion of a plane pattern through a Sierpinski carpet fractal algorithm, and carrying out the three-dimensional topology expansion of the plane pattern; temperature response parameters are embedded, the deformation triggering temperature is set to be 35 + / -1 DEG C, and the deformation rate is larger than 120%; 2, a five-axis linkage 3D printer is used, and synchronous deposition is carried out based on a dynamic compensation algorithm; according to the invention, the triangular topological structure is generated by adopting the Sierpinski carpet algorithm, so that the tensile strength reaches 12.5 MPa and the deformation rate is greater than 138% when the hollow area is 50-70%, and the contradiction between the light transmittance and the strength of the traditional paper-cut is solved. And the temperature-sensitive material is combined with a dynamic compensation algorithm, so that the deformation delay is 1.1 s, the path repetition error is less than 3.2%, and the response speed is increased by 272%. A 98.2% sRGB color gamut is achieved through multi-wavelength laser programming, delta E is 1.3 after ultraviolet aging is conducted for 1000 hours, and the weather resistance is higher than the basic standard.

Description

Technical Field

[0001] The present invention relates to the field of cultural and creative manufacturing technology, and specifically to a novel cultural and creative product production process integrating paper-cutting art with 3D printing. Background Art

[0002] Paper-cutting is one of the traditional Chinese folk art forms. It refers to the art of cutting various patterns on paper with scissors or carving knives. However, it faces many technical bottlenecks in industrial promotion: traditional paper-cutting relies on manual carving, and it takes several hours to several days to make a single piece. Complex patterns are prone to dimensional errors, making it difficult to achieve mass production. In addition, paper materials are brittle and have poor weather resistance, and cannot integrate light / heat response characteristics.

[0003] 3D printing technology, also known as additive manufacturing technology, is a technology that creates three-dimensional objects by stacking materials layer by layer. In recent years, although 3D printing technology has been applied in the field of cultural and creative products, there are still significant technical barriers in the direction of paper-cutting art: conventional printing materials such as PLA / ABS lack the flexibility and dynamic deformation capabilities required for paper-cutting; when the FDM process layer thickness is greater than 0.2mm, it is easy to produce a step effect, resulting in a hollow edge roughness Ra>10μm, which cannot restore the fine patterns of paper-cutting.

[0004] Therefore, we proposed a new cultural and creative product production process that combines paper-cutting art with 3D printing to solve the above-mentioned problems.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Summary of the invention

[0006] The purpose of the present invention is to provide a new cultural and creative product production process that integrates paper-cutting art and 3D printing, so as to solve one of the problems raised by the above background technology, such as insufficient material adaptability and structural precision defects in the current market.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The production process of a new cultural and creative product that combines paper-cutting art with 3D printing includes the following steps:

[0009] Step 1: Obtain point cloud data of traditional paper-cut patterns through high-precision 3D scanning (resolution less than 0.01mm), use the Sierpinski carpet fractal algorithm to perform three-dimensional topological expansion of the plane pattern, and embed temperature response parameters, setting the deformation trigger temperature to 35±1℃ and the deformation rate greater than 120%;

[0010] Step 2: Use a five-axis 3D printer to simultaneously deposit the following materials based on a dynamic compensation algorithm:

[0011] Thermosensitive shape memory polymer: glass transition temperature Tg = 35 ± 1 ° C, layer thickness 0.05-0.1 mm;

[0012] Photochromic resin: containing 0.5-1.2wt% titanium dioxide coated nanocapsules, layer thickness 0.1-0.15mm;

[0013] Bamboo fiber reinforced PLA matrix: fiber content 15-20wt%, layer thickness 0.2-0.3mm;

[0014] Step 3: Color pattern programming through multi-wavelength laser exposure;

[0015] Step 4: Perform mechanical shaping in a constant temperature environment and obtain a preset dynamic response path.

[0016] Specifically, in step one, the iteration number of the Sierpinski carpet fractal algorithm is 3-5 times, the fractal dimension D=1.58-1.89, the hollow area accounts for 50-70%, the grid connection points adopt a triangular topology optimization structure, and the side length error is less than 0.05 mm.

[0017] Specifically, in step 2, the temperature-sensitive shape memory polymer is a polyurethane-based composite material, comprising the following components: 80-85wt% of polyurethane elastomer (PU); 2-3wt% of carbon nanotubes (CNT); 12-15wt% of thermal responsive liquid crystal monomer (LC);

[0018] Its glass transition temperature Tg = 35 ± 1 ° C, and the deformation recovery stress is greater than 2MPa.

[0019] Specifically, in step 2, in the dynamic compensation algorithm, the Z-axis compensation amount δ = ±0.8 mm, and the BC-axis rotation synchronization error is less than 0.05°;

[0020] Adjust the nozzle inclination in real time according to the surface normal vector, and the compensation angle θ = ±15°;

[0021] The deposition interval between adjacent material layers is less than 0.5s, the spiral progressive filling spacing is 0.1-0.3mm, and the interlayer bonding strength is greater than 8MPa.

[0022] Specifically, in step three, multi-wavelength laser regional exposure includes: 650nm laser activates the cinnabar red color development area, exposure time 80-100s, 532nm laser generates antique copper oxide layer, exposure time 100-140s, 405nm ultraviolet light forms a transparent gradient area, exposure time 50-70s.

[0023] Specifically, in step 4, the deformation delay is verified to be less than 1.2 s by a high-speed camera, and the deformation uniformity error monitored by infrared thermal imaging is less than 5%.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In the present invention, by using the triangular topological structure generated by the Sierpinski carpet algorithm, the tensile strength reaches 12.5MPa when the hollow area is 50-70%, and the deformation rate is greater than 138%, solving the contradiction between the transmittance and strength of traditional paper cutting. And by combining the temperature-sensitive material with the dynamic compensation algorithm, the deformation delay is 1.1s, the path repetition error is less than 3.2%, and the weather resistance is higher than the basic standard.

[0026] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a flowchart of the preparation process of the new cultural and creative product production process that integrates paper-cutting art and 3D printing in the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0029] The production process of a new cultural and creative product that combines paper-cutting art with 3D printing includes the following steps:

[0030] Step 1: Obtain point cloud data of traditional paper-cut patterns through high-precision 3D scanning, use the Sierpinski carpet fractal algorithm to perform three-dimensional topological expansion of the plane pattern, and embed temperature response parameters, setting the deformation trigger temperature to 35±1℃ and the deformation rate to greater than 120%;

[0031] The iteration number of the Sierpinski carpet fractal algorithm is 3-5 times, the fractal dimension D=1.58-1.89, the hollow area accounts for 50-70%, the grid connection points adopt a triangular topology optimization structure, and the side length error is less than 0.05mm.

[0032] Step 2: Use a five-axis 3D printer to simultaneously deposit the following materials based on a dynamic compensation algorithm:

[0033] Thermosensitive shape memory polymer: glass transition temperature Tg = 35 ± 1 ° C, layer thickness 0.05-0.1 mm;

[0034] Photochromic resin: containing 0.5-1.2wt% titanium dioxide coated nanocapsules, layer thickness 0.1-0.15mm;

[0035] Bamboo fiber reinforced PLA matrix: fiber content 15-20wt%, layer thickness 0.2-0.3mm;

[0036] The thermosensitive shape memory polymer is a polyurethane-based composite material, comprising the following components: 80-85wt% polyurethane elastomer (PU); 2-3wt% carbon nanotubes (CNT); 12-15wt% thermoresponsive liquid crystal monomer (LC);

[0037] In the dynamic compensation algorithm, the Z-axis compensation amount δ = ±0.8mm, and the BC-axis rotation synchronization error is less than 0.05°;

[0038] Adjust the nozzle inclination in real time according to the surface normal vector, and the compensation angle θ = ±15°;

[0039] The deposition interval between adjacent material layers is less than 0.5s, the spiral progressive filling spacing is 0.1-0.3mm, and the interlayer bonding strength is greater than 8MPa.

[0040] Step 3: Color pattern programming through multi-wavelength laser exposure;

[0041] Multi-wavelength laser regional exposure includes: 650nm laser activates the cinnabar red color development area, exposure time 80-100s, 532nm laser generates antique copper oxide layer, exposure time 100-140s, 405nm ultraviolet light forms a transparent gradient area, exposure time 50-70s.

[0042] Step 4: Perform mechanical shaping in a constant temperature environment and obtain a preset dynamic response path. Verify that the deformation delay is less than 1.2s through a high-speed camera and that the deformation uniformity error is less than 5% through infrared thermal imaging monitoring.

[0043] Embodiment 1

[0044] The production process of a new cultural and creative product that combines paper-cutting art with 3D printing includes the following steps:

[0045] Step 1: Use the EinScan Pro 2X Plus high-precision 3D scanner with a resolution of 0.01mm to scan the paper-cut lotus pattern from Fengxiang, Shaanxi, and obtain point cloud data with a density of 5.2 million points / m 2 .

[0046] The Sierpinski carpet fractal algorithm was iterated 4 times to generate a three-dimensional topological structure with a fractal dimension of D = 1.73;

[0047] Set the hollow area ratio to 62%, and the side length error of the triangle topology mesh is less than 0.04mm;

[0048] The deformation trigger temperature is 34.5°C, and the deformation rate is measured to be 123%.

[0049] Step 2: Thermosensitive shape memory polymer: PU 83wt% + CNT 2.5wt% + LC 14.5wt%, where Tg = 35.2°C, deformation recovery stress 2.3MPa; Photochromic resin: containing 0.8wt% titanium dioxide coated nanocapsules, particle size 50-80nm; Bamboo fiber reinforced PLA: fiber content 18wt%, length 3mm, diameter 15μm.

[0050] Use the Evo 3D five-axis printer, set the Z-axis compensation δ = +0.7mm, and the BC-axis synchronization error to 0.03°;

[0051] The nozzle inclination angle was dynamically adjusted θ = +12° to -14°, and the deposition interval was 0.4s;

[0052] The spiral progressive filling strategy makes the spacing 0.2mm, and the interlayer bonding strength is measured to be 8.5MPa.

[0053] Step 3: Cinnabar red color development area: 650nm laser, power 20mW / cm 2 , exposure time 90s; antique copper oxide layer: 532nm laser, power 15mW / cm 2 , exposure time 120s; transparent gradient area: 405nm UV light, power 10mW / cm 2 , exposure time 60s.

[0054] The color difference ΔE is less than 1.5, and the thickness of the oxide layer is 2-3μm.

[0055] Step 4: The robot arm applies a preload force of 12N, and the temperature cycle is 25℃-45℃, cycled 4 times, and the heating and cooling rate is 5℃ / min.

[0056] The verified high-speed camera (Phantom VEO 410L, sampling rate 1200fps) measured a deformation delay of 1.1s; infrared thermal imaging showed a deformation uniformity error of 4.2%.

[0057] The difference between the second embodiment and the first embodiment is that:

[0058] Scanning was set to EinScan HX, with a resolution of 0.005-0.02mm and a point cloud density of 3-8 million points / m 2 ;

[0059] In the hybrid fractal algorithm, the Sierpinski carpet (D = 1.68-1.89) and the Menger sponge (D = 2.73) were iterated alternately 3-5 times to form a multi-scale topological grid; the hollow area ratio was expanded to 55-70%, and the error of the topological grid side length was less than 0.02-0.06mm; the deformation trigger temperature was adjusted to 30-40℃, and the deformation rate was measured to be 110-150%;

[0060] The dynamic compensation of the Z axis δ = ± 0.5-1.0 mm, the synchronization error of the BC axis is compressed to 0.02-0.05°; the dynamic range of the nozzle inclination angle θ is extended to +10° to -15°, and the deposition interval is optimized to 0.3-0.6s;

[0061] The filling strategy has added a new circular progressive mode, with a spacing of 0.1-0.3mm and an interlayer bonding strength of 7-10MPa;

[0062] In the composite stress control, the preload range is extended to 8-15N; the temperature cycle range is adjusted to 20-50℃, the number of cycles is 3-6 times, the heating and cooling rate is 3-8℃ / min; the humidity cycle RH is 30%-70%;

[0063] Example 3: Optimization and verification of fractal dimension on deformation rate

[0064] The influence of the fractal dimension (D=1.58-1.89) on the deformation rate in claims 1-2 is systematically verified, and the optimization effect of the fractal structure on the dynamic response performance is verified by combining the dynamic compensation algorithm of claim 4 and the temperature-sensitive material formula of claim 3.

[0065] For the experimental group design, the fractal dimensions are: D = 1.58 (low complexity), D = 1.73 (medium complexity), and D = 1.89 (high complexity).

[0066] Fixed parameters: 4 iterations, 62% hollowing area, and 35°C temperature trigger.

[0067] Material: Claim 3 temperature-sensitive shape memory polymer PU 82wt% + CNT 2.5wt% + LC 15.5wt%.

[0068] Preparation process: The point cloud data of traditional paper-cutting patterns is obtained through high-precision 3D scanning, and the three-dimensional topological structure is generated using the Sierpinski carpet algorithm;

[0069] Using a five-axis linkage 3D printer, the BC axis error is less than 0.05° for synchronous deposition of materials, the nozzle inclination angle θ=±15° in the dynamic compensation algorithm, and the inter-layer interval is less than 0.5s.

[0070] Test method: measure the ratio of the maximum displacement to the initial size after temperature triggering (greater than 120% is qualified); structural strength: use a universal testing machine to detect deformation recovery stress; deformation uniformity: use an infrared thermal imager to monitor temperature distribution error. The results are compared as shown in the following table:

[0071]

[0072]

[0073] Experimental conclusion: When D=1.89, the deformation rate is the highest (155%), but the structural stability decreases, and the interlayer bonding strength of 7.8MPa is close to the critical value; D=1.73 achieves the best comprehensive performance between deformation rate (138%), recovery stress (2.4MPa) and bonding strength (8.7MPa); the deformation uniformity error of D=1.58 is only 4.2%, which is suitable for precision mechanical transmission scenarios.

[0074] In summary, the fractal dimension D = 1.73 is the optimal parameter combination, and its deformation rate exceeds the lower limit of claim 1 by 15%, while meeting the mechanical strength requirements, and is suitable for cultural and creative products that require both dynamic response and durability. High-dimensional fractals (D = 1.89) can be used preferentially for cultural and creative products in decorative scenes with single deformation requirements.

[0075] Example 4: Verifying the improvement of printing accuracy by dynamic compensation algorithm

[0076] The optimization effect of the dynamic compensation algorithm in claim 4 on the five-axis linkage 3D printing accuracy is compared and verified. Combined with the fractal structure stability requirements of claim 2 and the temperature-sensitive material characteristics of claim 3, the impact of the algorithm on the molding quality of complex paper-cut cultural and creative products is analyzed.

[0077] Experimental and control group settings: The experimental group enabled the dynamic compensation algorithm (Z-axis compensation δ = ± 0.8 mm, BC-axis rotation synchronization error was less than 0.05°); the control group fixed the Z-axis compensation (δ = ± 1.2 mm), the BC-axis error was 0.1°, and dynamic tilt adjustment was disabled.

[0078] Fixed parameters: the printing material adopts the temperature-sensitive shape memory polymer (Tg=35±1° C.) of claim 3; in the fractal structure, the Sierpinski carpet algorithm is iterated 4 times, and the hollow area is 62%.

[0079] For printing equipment and monitoring tools, equipment: EOS M 300-5 five-axis 3D printer (equipped with magnetic suspension BC axis drive system). Detection: laser displacement sensor (Keyence LJ-V7300, accuracy ±0.001mm) measures layer thickness deviation. Electron microscope (ZEISS EVO 15) analyzes the burr rate of hollow edges.

[0080] For the core control logic of the dynamic compensation algorithm, Z-axis compensation: adjust the δ value in real time according to the curvature of the surface, compensate for the material shrinkage (±0.8mm), and reduce interlayer misalignment. BC axis synchronous correction: the magnetic suspension drive system controls the rotation error to less than 0.05° to avoid the breakage of the fractal grid connection point. Dynamic adjustment of the nozzle inclination: real-time correction of θ=±15° based on the surface normal vector to ensure uniform deposition of the photochromic resin.

[0081] For spiral progressive filling, the filling spacing is 0.2mm, and the deposition interval between adjacent material layers is less than 0.5s. The bonding strength is enhanced by interlayer heat diffusion. The experimental results are shown in the following table:

[0082] Test indicators Experimental group (dynamic compensation) Control group (fixed compensation) Improvement Layer thickness deviation(mm) ±0.03 ±0.12 75％↓ Hollow edge burr rate (%) 2.1 8.7 76％↓ Fractal connection point strength (MPa) 9.2 7.5 22.7％↑

[0083] Experimental conclusion:

[0084] The dynamic compensation algorithm reduces the layer thickness deviation from ±0.12mm to ±0.03mm through real-time Z-axis correction, meeting the requirement that the fractal structure side length error is less than 0.05mm; BC axis error control (less than 0.05°) combined with dynamic adjustment of the nozzle inclination angle reduces splash residue of photochromic resin; the fractal connection point strength is increased to 9.2MPa, which is 29% better than the control group, verifying the algorithm's molding support effect on complex topology grids.

[0085] Application examples:

[0086] When applied to dynamic paper-cut lighting, when the deformation trigger temperature is 35°C, the dynamic compensation algorithm is enabled to ensure the consistency of the deformation path.

[0087] The dynamic compensation algorithm improves the 3D printing accuracy to ±0.03mm through real-time Z-axis compensation, BC-axis synchronous correction and dynamic adjustment of the nozzle inclination, reduces the burr rate by 76%, and increases the fractal connection point strength by 22.7%, meeting claim 4 that the BC-axis error is less than 0.05° and the interlayer bonding strength is greater than 8MPa. It is suitable for the collaborative printing of temperature-sensitive materials and highly complex fractal structures, providing technical support for the mass production of intelligent paper-cut cultural and creative products.

[0088] In summary, the topological structure generated by the Sierpinski carpet fractal algorithm, when the hollow area accounts for 62% in Example 3, the tensile strength of the product reaches 12.5MPa, and the deformation rate is 138%±5%. It breaks through the negative correlation between the transmittance and strength of traditional paper-cutting, and maintains a tensile strength greater than 10MPa when the transmittance is greater than 75%.

[0089] Using a polyurethane-based temperature-sensitive composite material in conjunction with a dynamic compensation algorithm, the measured deformation trigger delay in Example 1 was 1.1s, and the deformation path repetition accuracy error was 3.0%, which were respectively improved by 172% and 80% compared with existing temperature-sensitive paper-cutting products.

[0090] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who read this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application.

[0091] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0093] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0094] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of cultural and creative product production process that integrates paper-cutting art and 3D printing, characterized by: The following steps are involved: Step 1: Obtain point cloud data of traditional paper-cut patterns through high-precision 3D scanning, use the Sierpinski carpet fractal algorithm to perform three-dimensional topological expansion of the plane pattern, and embed temperature response parameters, setting the deformation trigger temperature to 35±1℃ and the deformation rate to greater than 120%; Step 2: Use a five-axis 3D printer to simultaneously deposit the following materials based on a dynamic compensation algorithm: Thermosensitive shape memory polymer: glass transition temperature Tg = 35 ± 1 ° C, layer thickness 0.05-0.1 mm; Photochromic resin: Nanocapsules coated with 0.5-1.2wt% titanium dioxide, layer thickness 0.1-0.15mm; Bamboo fiber reinforced PLA matrix: fiber content 15-20wt%, layer thickness 0.2-0.3mm; Step 3: Color pattern programming through multi-wavelength laser exposure; Step 4: Perform mechanical shaping in a constant temperature environment and obtain a preset dynamic response path.

2. The novel cultural and creative product production process integrating paper-cutting art and 3D printing according to claim 1 is characterized by: In step one, the iteration number of the Sierpinski carpet fractal algorithm is 3-5 times, the fractal dimension D=1.58-1.89, the hollow area accounts for 50-70%, the grid connection points adopt a triangular topology optimization structure, and the side length error is less than 0.05mm.

3. The novel cultural and creative product production process integrating paper-cutting art and 3D printing according to claim 1 is characterized by: In step 2, the thermosensitive shape memory polymer is a polyurethane-based composite material, comprising the following components: 80-85wt% polyurethane elastomer; 2-3wt% carbon nanotubes; 12-15wt% thermoresponsive liquid crystal monomer; Its glass transition temperature Tg = 35 ± 1 ° C, and the deformation recovery stress is greater than 2MPa.

4. The novel cultural and creative product production process integrating paper-cutting art and 3D printing according to claim 1 is characterized by: In step 2, in the dynamic compensation algorithm, the Z-axis compensation amount δ = ±0.8mm, and the BC-axis rotation synchronization error is less than 0.05°; Adjust the nozzle inclination in real time according to the surface normal vector, and the compensation angle θ = ±15°; The deposition interval between adjacent material layers is less than 0.5s, the spiral progressive filling spacing is 0.1-0.3mm, and the interlayer bonding strength is greater than 8MPa.

5. The novel cultural and creative product manufacturing process integrating paper-cutting art and 3D printing according to claim 1 is characterized by: In step three, multi-wavelength laser regional exposure includes: 650nm laser activates the cinnabar red color development area, exposure time 80-100s, 532nm laser generates antique copper oxide layer, exposure time 100-140s, 405nm ultraviolet light forms a transparent gradient area, exposure time 50-70s.

6. The novel cultural and creative product manufacturing process integrating paper-cutting art and 3D printing according to claim 1 is characterized by: In step 4, the deformation delay is verified to be less than 1.2s by a high-speed camera, and the deformation uniformity error monitored by infrared thermal imaging is less than 5%.

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