3D printing skirt edge and method for generating 3D printing skirt edge through sine function
The wave-shaped sinusoidal skirt design solves the problems of difficult disassembly and edge warping when the skirt is bonded to the printed body in 3D printing, thereby improving stability and precision, enhancing adaptability, and reducing material consumption and post-processing costs.
Patent Information
- Application Number
- CN202610149984.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-03
- Publication Date
- 2026-04-21
AI Technical Summary
In existing 3D printing technologies, skirt designs have problems such as being too tightly bonded to the printed body and difficult to remove, or not being firmly bonded to the printing base and causing the edges to curl up. In addition, traditional solutions are costly, have complex parameter adjustments, and poor versatility.
It adopts a wave-shaped sine skirt design, which generates the skirt through a sine function to enhance the adhesion strength with the printing body and sets a detachable edge for easy disassembly, adapting to different printing needs.
It improves printing stability and accuracy, reduces the probability of warping, simplifies the disassembly process, reduces material consumption and post-processing costs, is highly adaptable, and is widely used in 3D printing equipment based on FDM technology.
Smart Images
Figure CN121893524A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of 3D printing technology, and specifically to a method for generating 3D printed skirts using a sine function. Background Technology
[0002] Since its inception in the 1980s, 3D printing technology has undergone a leapfrog development from rapid prototyping to direct product manufacturing. It manufactures solid objects by layering materials, offering advantages such as high design freedom, short production cycles, and high material utilization, and is widely used in aerospace, medical, automotive, and construction industries. Among these, 3D printing equipment based on fused deposition modeling (FDM) technology has become the preferred choice for individual users and small businesses due to its low cost, ease of operation, and wide range of materials.
[0003] Polylactic acid (PLA), as a bio-based biodegradable material, has become one of the most commonly used materials in the 3D printing field due to its advantages such as being environmentally friendly, non-toxic, and highly printable. PLA exhibits good flowability during printing, enabling the formation of stable interlayer bonds; however, its thermal stability is poor, making it prone to warping and deformation during the printing process. Furthermore, the bonding performance of PLA is affected by various factors such as printing temperature, ambient temperature, and printing speed, posing challenges to the stability and quality of 3D printing.
[0004] A skirt (also known as a support structure or edge stabilizing structure) is an important structure in 3D printing used to ensure printing stability and reduce warping. During the printing process, the skirt, together with the print body and the print base, forms a stable support system, effectively preventing warping and deformation of the printed part. However, traditional skirt designs have the following problems:
[0005] 1. Overly tight adhesion to the print body: Ordinary skirts adhere tightly to the print body during printing, making them difficult to remove after printing. Disassembly can easily damage the surface of the print body, affecting the quality and aesthetics of the printed parts. This overly tight adhesion is particularly pronounced when printing complex structures or requiring multiple print runs, increasing printing time and costs.
[0006] 2. Poor adhesion to the print base: Due to insufficient contact area between the skirt and the print base or poor adhesive material performance, the skirt is prone to curling during printing. Curling causes the printed part to separate from the print base, affecting print stability and quality. Furthermore, curling may also cause printing interruptions, leading to print failure.
[0007] 3. Poor versatility: Traditional skirt designs typically use fixed geometries and sizes, making it difficult to adapt to different printing needs and PLA material properties. For example, when printing large and complex structures, the number and size of the skirts need to be increased to improve stability, but this increases printing time and material consumption; while when printing small and simple structures, too many skirts increase the difficulty of disassembly.
[0008] To address the aforementioned issues, existing technologies have proposed several solutions, such as using soluble support materials, adjusting printing parameters, and optimizing the skirt design. However, these solutions have the following limitations:
[0009] 1. High cost of soluble support materials: Although some soluble support materials (such as PVA) can be separated from the printing body, they are expensive and require special printing equipment and post-processing, which limits their application range.
[0010] 2. Complex printing parameter adjustment: Adjusting printing parameters (such as temperature, speed, layer thickness, etc.) requires rich experience and skills, and different printing needs and PLA material properties require different parameter combinations, which increases the complexity and uncertainty of printing.
[0011] 3. Limited optimization of skirt design: Existing technologies have proposed some solutions to optimize skirt design, such as increasing the number of skirts or changing the shape of the skirts. However, these solutions often only solve part of the problem and cannot simultaneously achieve the goals of easy disassembly from the printing body and firm adhesion to the printing base.
[0012] Therefore, there is an urgent need for a new 3D printing solution for skirts to address the aforementioned issues. Summary of the Invention
[0013] The purpose of this invention is to provide a method for generating 3D printing skirts using a sine function. By generating a wavy sine skirt around the body to be printed, the contact area with the body is guaranteed, ensuring bonding strength while improving bonding stability and facilitating disassembly. This effectively solves the problems of existing 3D printing skirts being too tightly bonded to the body and difficult to disassemble, and being poorly bonded to the printing base, resulting in edge curling.
[0014] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a 3D printed skirt is provided, the 3D printed skirt surrounds the bottom periphery of the body to be printed, the 3D printed skirt is a wavy sinusoidal skirt, and the side of the sinusoidal skirt closest to the body to be printed is bonded to the body to be printed.
[0015] Furthermore, a detachable edge is provided on the side of the sine skirt away from the main body to be printed, and the detachable edge is bonded to the sine skirt.
[0016] Furthermore, the disassembled edge wraps around the sine skirt hem.
[0017] Furthermore, the wavy crests of the disassembled edge and the sine skirt edge are bonded together.
[0018] This invention also provides a method for generating a 3D printed skirt using a sine function, for generating the aforementioned 3D printed skirt, the method comprising the following steps:
[0019] S1. Determine the skirt width W and period T according to the thickness of the main body to be printed and the thickness of the printing material, and form a 3D printed skirt around the bottom of the main body to be printed.
[0020] S2. Divide the 3D printed skirt into several broken lines, and generate a wavy sinusoidal skirt using each broken line as a baseline. This process is repeated to generate each sinusoidal skirt segment.
[0021] S3. Convert the wavy sinusoidal skirt hem into a 3D model and 3D print it.
[0022] Furthermore, in step S1, the skirt width W is three times the thickness of the main body to be printed, and the period T is six times the thickness of the printing material.
[0023] Furthermore, in step S1, the printing material is PLA.
[0024] Furthermore, in step S2, the expression for generating the sine skirt is:
[0025] y = W sin(2π / T*x + C) + D;
[0026] Where W is the skirt width, T is the period, C is the initial phase, and D is the relative movement.
[0027] Furthermore, in step S2, the independent variable x corresponding to the termination point of each sine skirt segment is the initial phase C of the next sine skirt segment.
[0028] Furthermore, in step S2, a surrounding disassembly edge is generated on the side of the 3D printed skirt away from the main body to be printed.
[0029] The present invention has the following beneficial effects:
[0030] 1. Significantly Improved Printing Stability: Enhanced Adhesion to the Subject Being Printed: The undulating structure of the wavy sinusoidal skirt increases the stability of contact with the subject being printed. Traditional wraparound skirts tend to shrink more due to thermal expansion and contraction, causing the skirt to detach from the subject. However, with the wavy sinusoidal skirt, the PLA material can better form a physical and chemical bond with the subject during printing, thus improving adhesion strength. Experiments show that compared to traditional skirts, the probability of edge warping between the subject and the printed object is reduced by 30%, effectively reducing edge warping caused by weak adhesion during printing. Simultaneously, reduced vibration during printing: The wavy sinusoidal skirt better disperses vibrations generated by printhead movement during printing, improving printing stability. This is especially important for printing large or complex structures, reducing errors and improving printing accuracy.
[0031] 2. Facilitates disassembly after printing: Reduced direct contact area with the printed subject: The wavy sinusoidal skirt reduces the direct contact area with the printed subject during printing, thus minimizing the contact area. After printing, the user can easily peel the skirt off the printed subject with a gentle force, avoiding the problem of traditional skirts being difficult to remove due to excessive adhesion. This not only reduces disassembly time but also lowers the risk of damage to the surface of the printed subject, improving the quality and aesthetics of the printed parts. Reduced post-processing workload: Traditional skirts often require further cleaning and trimming after disassembly, while the wavy sinusoidal skirt of this invention requires almost no additional processing after disassembly, greatly reducing post-processing workload and improving production efficiency.
[0032] 3. High Adaptability: Adjustable Parameter Design: By adjusting the parameters of the wavy sinusoidal skirt (such as W, T, etc.), skirts of different shapes and sizes can be generated to adapt to different printing needs and PLA material properties. For example, for printing large and complex structures, the width and height of the skirt can be increased to improve stability; while for printing small and simple structures, the size of the skirt can be reduced to save material and time. Wide Range of Applications: The wavy sinusoidal skirt structure of this invention is suitable for various FDM-based 3D printing equipment. Whether for individual users or small businesses, optimized skirt design can be achieved through simple parameter adjustments. In addition, this technology can also be applied to other 3D printing scenarios requiring stable support and easy disassembly, such as medical, educational, and scientific research fields.
[0033] 4. Improved Printing Efficiency and Quality: Reduced Printing Failure Rate: By improving printing stability and adhesion performance, the wavy sinusoidal skirt structure of this invention effectively reduces the printing failure rate caused by problems such as edge curling and weak adhesion during the printing process. Experiments show that the printing failure rate using the wavy sinusoidal skirt structure of this invention is reduced by about 20% compared to traditional skirts, greatly improving the printing success rate. Improved Printing Accuracy: The wavy sinusoidal skirt can better disperse the vibration generated by the movement of the print head during the printing process, reducing errors in the printing process. At the same time, the skirt shape generated by adjusting parameters is more precise and can better adapt to the shape and size of the printed subject, improving printing accuracy.
[0034] 5. Reduced Material Waste: Traditional skirts often require more material during printing to ensure stability, while the wavy sinusoidal skirt of this invention reduces material usage through optimized design. Furthermore, the reduced printing failure rate also minimizes material waste due to printing failures; the skirt printing material is lighter than traditional methods, with the skirt weight approximately 75% of the previous version. Reduced Post-Processing Costs: Traditional skirts often require further cleaning and trimming after disassembly, while the skirt of this invention requires almost no additional processing after disassembly, significantly reducing post-processing costs. Simultaneously, improved printing efficiency and quality also reduce additional costs caused by printing failures. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the 3D printed skirt of the present invention;
[0036] Figure 2 This is a schematic diagram showing the 3D printing skirt of the present invention disposed around the body to be printed;
[0037] Figure 3 This is a schematic diagram of the multi-segment wavy sinusoidal skirt of the present invention;
[0038] The components are: 1. The main body to be printed; 2. The sine skirt; 3. The detachable edge. Detailed Implementation
[0039] The present invention will be further illustrated below with reference to specific embodiments, but the embodiments do not limit the present invention in any way. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in this technical field.
[0040] In an embodiment of the present invention, a 3D-printed skirt is provided, such as... Figure 1 As shown, the 3D printed skirt surrounds the bottom periphery of the body 1 to be printed. The 3D printed skirt is a wavy sine skirt 2, and the sine skirt 2 is bonded to the body 1 on the side closest to the body 1 to be printed.
[0041] The sine skirt 2 has a detachable edge 3 on the side away from the main body 1 to be printed. The detachable edge 3 is bonded to the sine skirt 2. The detachable edge 3 is provided to facilitate the removal of the skirt.
[0042] Specifically, the disassembly edge 3 surrounds the sine skirt edge 2; the disassembly edge 3 is bonded to the wavy crest of the sine skirt edge 2.
[0043] exist Figure 1 In the diagram, a wavy sinusoidal skirt 2 surrounds the bottom perimeter of the main body 1 to be printed. The peak points of the wavy sinusoidal skirt 2 closest to the main body 1 are called troughs, and the peak points furthest from the main body 1 are called peaks. At this point, the troughs of the wavy sinusoidal skirt 2 are bonded to the main body 1, while the peaks are bonded to the detachment edge 3. The diagram shows that the sinusoidal skirt 2 and the main body 1 are not directly bonded together because this is a theoretical model demonstration. In actual objects, both the sinusoidal skirt 2 and the main body 1 have a certain thickness, therefore they are bonded together during actual printing.
[0044] In an embodiment of the present invention, a method for generating a 3D printed skirt using a sine function is also provided, for generating the aforementioned 3D printed skirt, the method comprising the following steps:
[0045] S1. Determine the skirt width W and period T based on the thickness of the main body 1 to be printed and the thickness of the printing material (PLA material), and form a 3D printed skirt around the bottom perimeter of the main body 1 to be printed; the skirt width W is three times the thickness of the main body 1 to be printed, and the period T is six times the thickness of the printing material; for example... Figure 2 As shown, a 3D printed skirt (dashed line) is formed around the bottom of the main body 1 to be printed (solid line), which is displayed in the form of lines;
[0046] S2. Divide the 3D printed skirt into several segments of broken lines, such as... Figure 3 As shown, a wavy sine skirt 2 (solid line) is generated with each segment of the broken line as the baseline (dashed line). Each sine skirt 2 segment is generated in this way. The independent variable x corresponding to the termination point of each sine skirt 2 segment is the initial phase C of the next sine skirt 2 segment. A surrounding disassembly edge 3 is generated on the side of the 3D printed skirt away from the main body 1 to be printed.
[0047] S3. Convert the wavy sinusoidal skirt hem 2 into a 3D model (e.g., Figure 1 (as shown), and then 3D printed.
[0048] In step S2, the expression for generating the sine skirt 2 is:
[0049] y = W sin(2π / T*x + C) + D;
[0050] Where W is the skirt width, T is the period, C is the initial phase, and D is the relative movement.
[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A 3D-printed skirt hem, characterized in that, The 3D printed skirt surrounds the bottom periphery of the subject to be printed. The 3D printed skirt is a wavy sinusoidal skirt, and the side of the sinusoidal skirt closest to the subject to be printed is bonded to the subject to be printed.
2. The 3D printed skirt according to claim 1, characterized in that, The sine skirt has a detachable edge on the side away from the main body to be printed, and the detachable edge is bonded to the sine skirt.
3. The 3D printed skirt according to claim 2, characterized in that, The disassembly edge surrounds the sine skirt.
4. The 3D printed skirt according to claim 2, characterized in that, The disassembly edge is bonded to the wavy crest of the sinusoidal skirt edge.
5. A method for generating 3D printed skirts using a sine function, characterized in that, The method for generating the 3D printed skirt according to any one of claims 1-4 includes the following steps: S1. Determine the skirt width W and period T according to the thickness of the main body to be printed and the thickness of the printing material, and form a 3D printed skirt around the bottom of the main body to be printed. S2. Divide the 3D printed skirt into several broken lines, and generate a wavy sinusoidal skirt using each broken line as a baseline. This process is repeated to generate each sinusoidal skirt segment. S3. Convert the wavy sinusoidal skirt hem into a 3D model and 3D print it.
6. The method for generating a 3D printed skirt using a sine function according to claim 5, characterized in that, In step S1, the skirt width W is three times the thickness of the main body to be printed, and the period T is six times the thickness of the printing material.
7. The method for generating a 3D printed skirt using a sine function according to claim 5, characterized in that, In step S1, the printing material is PLA.
8. The method for generating a 3D printed skirt using a sine function according to claim 5, characterized in that, In step S2, the expression for generating the sinusoidal skirt is: y = W sin(2π / T*x + C) + D; Where W is the skirt width, T is the period, C is the initial phase, and D is the relative movement.
9. The method for generating a 3D printed skirt using a sine function according to claim 5, characterized in that, In step S2, the independent variable x corresponding to the termination point of each sine skirt segment is the initial phase C of the next sine skirt segment.
10. The method for generating a 3D printed skirt using a sine function according to claim 5, characterized in that, In step S2, a surrounding disassembly edge is generated on the side of the 3D printed skirt away from the main body to be printed.