A 3D printing method and apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration.

Abstract

This invention discloses a 3D printing method and apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration. The apparatus integrates an acoustic wave generator and an ultraviolet projector, which can use acoustic waves to create corrugated textures on the surface of printing ink. The ultraviolet projector is used to perform regionally controllable curing of the ink, achieving efficient and precise corrugated film printing. The acoustic wave generator group exists in the form of a 3x3 rectangular array, with each generator operating independently, providing flexibility for the formation of corrugated textures. During the printing process, by adjusting the operating frequency and volume of the acoustic wave generator, the density and height of the non-smooth patterned corrugated texture on the ink surface can be controlled. Compared with other traditional 3D printing methods, this invention can quickly and accurately prepare non-smooth patterned corrugated films. The prepared films can be installed on various objects, achieving multiple superior properties such as reduced resistance, enhanced heat dissipation, and adjusted optical performance.

Description

Technical Field

[0001] This invention relates to the technical field of 3D printing, and in particular to a 3D printing method and apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration. Background Technology

[0002] Non-smooth corrugated surfaces possess unique and superior properties. For example, they effectively reduce drag when objects move through fluids, thus being adopted in fields such as aircraft wings and submarine hulls to improve operational efficiency. Furthermore, the corrugated structure increases the surface area of ​​an object, thereby enhancing heat dissipation and adsorption capacity, playing a crucial role in engineering components such as heat exchangers. In addition, non-smooth corrugated surfaces have various applications in reducing adhesion and adjusting optical properties. Currently, the manufacturing of non-smooth corrugated surfaces mainly employs laser etching, chemical etching, and thermoforming. However, these methods require complex equipment, have environmental impacts, and produce surface qualities that are not uniform.

[0003] 3D printing technology constructs pre-designed objects by layering printing materials. This manufacturing process maximizes the freedom of product structural design and is the ideal way to easily and conveniently fabricate complex structures. Digital light processing (DLP) printing, a type of 3D printing, precisely fabricates complex products by projecting two-dimensional images. However, a drawback of 3D printing is its relatively slow forming speed. Currently, the method for fabricating products with non-smooth patterned wavy surfaces using DLP is to first divide the sample into multiple 2D planes, then fabricate these 2D planes one by one, ultimately forming a complete wavy surface. Although this method is suitable for most manufacturing scenarios, it cannot produce non-smooth patterned wavy surfaces in one step, resulting in a delay in production time.

[0004] Therefore, to achieve one-step molding of non-smooth patterned wavy surfaces, it is necessary to modify and improve existing 3D printing technologies. Summary of the Invention

[0005] This invention addresses the shortcomings of existing DLP printing technology by providing a 3D printing method and apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration. This apparatus can simultaneously use acoustic vibration to create a non-smooth corrugated surface for the printing ink and control an ultraviolet projector to perform regional curing of the printing ink.

[0006] A 3D printing apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration includes: an acoustic wave generator assembly, a material barrel, and an ultraviolet projector, wherein the acoustic wave generator assembly consists of a 3x3 rectangular array of acoustic wave generators (a 11 -a 33The system consists of several components, each capable of operating independently. The sound generator assembly is fixed to the base plate of the printing device, with the sound output end of the sound generator facing upwards. The bottom of the ink cylinder is directly connected to the sound output end of the speaker. The bottom of the ink cylinder is made of PVC film to ensure that sound wave vibrations can be smoothly transmitted to the ink surface. The ultraviolet projector is fixed directly above the ink cylinder and can be controlled by an external computer. The computer can arbitrarily set the pattern and time that the ultraviolet projector projects onto the ink surface.

[0007] A 3D printing method proposed by a 3D printing device based on one-step acoustic vibration forming of non-smooth patterned corrugated films includes the following steps:

[0008] Step 1: Selecting Printing Ink

[0009] This 3D printing device is mainly suitable for photosensitive resin inks that can be cured after being exposed to ultraviolet light, wherein the absolute viscosity of the printing ink is adjusted to be between 1-8000 cP.

[0010] Step 2: Printing of non-smooth patterned corrugated film:

[0011] When the entire 3D printing device is working, enough printing ink is poured into the barrel. Then, the acoustic generator is turned on. The vibration of the acoustic generator is transmitted to the ink surface, causing non-smooth ripples to be generated on the ink surface. By adjusting the parameters between the output frequency and output volume of each generator in the acoustic generator group and the projection pattern of the ultraviolet projector, a variety of ripple structures can be prepared. The internal region ripple structure is flexible and controllable. Non-smooth patterned rippled films are produced.

[0012] The output frequency range of the sound wave generator (1) is 80-20000Hz, and the sensitivity is 90dB;

[0013] Step 3: Post-processing of non-smooth patterned corrugated films:

[0014] In the post-processing, the non-smooth patterned corrugated film prepared in step two is first immersed in anhydrous ethanol for 1 minute to remove residual ink from the printed film. Then, the cleaned corrugated film is irradiated with ultraviolet light for 5 seconds for secondary curing to ensure that the residual ink is completely cured. Subsequently, the prepared corrugated film is ground and polished to finally obtain the desired non-smooth patterned corrugated film.

[0015] By setting the output of each generator in the acoustic wave generator group to be the same and adjusting the working frequency of the acoustic wave generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes denser.

[0016] By setting the output of each generator in the sound wave generator group to be the same and adjusting the working volume of the sound wave generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes steeper.

[0017] By setting the operating frequency of the acoustic generators in the acoustic generator group in a regional manner, the texture of the non-smooth patterned ripples generated on the ink surface will produce a regional change in density.

[0018] By adjusting the operating volume of the acoustic generators in the acoustic generator group in different regions, the texture of the non-smooth patterned ripples generated on the ink surface will produce regional height changes.

[0019] By setting up a program where an ultraviolet projector projects light sequentially onto different areas, the ink is locally cured, gradually obtaining a complete printed product. In each area, the output sound waves of the sound wave generator group are adjusted in real time, which can print non-smooth patterned corrugated films with flexible and controllable regional characteristics.

[0020] A 3D printing method based on acoustic vibration to form a non-smooth patterned corrugated film in one step produces film products. The non-smooth patterned corrugated film can be adapted to be installed on various objects to achieve various desired properties such as reducing resistance, enhancing heat dissipation, and adjusting optical performance.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. This invention uses acoustic vibration to rapidly produce non-smooth patterned corrugated films in a one-step process, which significantly reduces manufacturing time compared to other 3D printing methods;

[0023] 2. This invention is based on DLP technology and has broad adaptability and versatility for ink printing;

[0024] 3. This invention utilizes a 3x3 rectangular array of acoustic wave generators and an ultraviolet projector to achieve flexible control over non-smooth patterned corrugated films, enabling them to exhibit diverse and unique corrugated surfaces.

[0025] 4. The non-smooth patterned corrugated thin film prepared by this invention can be adapted to be installed on various objects to achieve various desired properties such as reducing resistance, enhancing heat dissipation, and adjusting optical performance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the 3D printing device proposed in this invention, which is based on one-step forming of non-smooth patterned corrugated films using acoustic vibration.

[0027] Figure 2The image shows the effect of printing a non-smooth patterned corrugated film using a sound wave generator with a working frequency of 1000Hz and a working volume of 50dB in Embodiment 1 of the present invention.

[0028] Figure 3 The images show the effect of printing non-smooth patterned corrugated films using sound wave generators with a working frequency of 5000Hz and a working volume of 50dB in both embodiments 1 and 2 of the present invention.

[0029] Figure 4 The image shows the effect of printing a non-smooth patterned corrugated film using a sound wave generator with a working frequency of 15000Hz and a working volume of 50dB in Embodiment 1 of the present invention.

[0030] Figure 5 The image shows the effect of printing a non-smooth patterned corrugated film using a sound wave generator with a working frequency of 5000Hz and a working volume of 20dB in Embodiment 2 of the present invention.

[0031] Figure 6 The image shows the effect of printing a non-smooth patterned corrugated film using a sound wave generator with a working frequency of 5000Hz and a working volume of 90dB in Embodiment 2 of the present invention.

[0032] Figure 7 This is an image showing the effect of printing a non-smooth patterned corrugated film in Embodiment 3 of the present invention;

[0033] Figure 8 This is an image showing the effect of printing a non-smooth patterned corrugated film in Embodiment 4 of the present invention;

[0034] Figure 9 This is an image showing the effect of printing a non-smooth patterned corrugated film in Embodiment 5 of the present invention;

[0035] Figure 10 This is an image showing the effect of printing a non-smooth patterned corrugated film in Embodiment 6 of the present invention. Detailed Implementation

[0036] This invention proposes a 3D printing method and device for one-step forming of non-smooth patterned corrugated films based on acoustic vibration. To more clearly illustrate the content and technical solution of this invention, a detailed description will be provided below in conjunction with the accompanying drawings.

[0037] like Figure 1 The diagram shows the structure of the printing device. This printing device consists of a sound wave generator group 1, a material cylinder 2, and an ultraviolet projector 3. The sound wave generator group is composed of a 3x3 rectangular array of sound wave generators (a 11 -a 33 It consists of ) and each sound wave generator is named a. 11 -a33 Each acoustic generator can be individually controlled. The acoustic generator assembly is fixed to the base plate of the printing device, with the sound output end of the acoustic generator facing upwards. The bottom of the ink cartridge is directly connected to the sound output end of the speaker. The bottom of the ink cartridge is made of PVC film to ensure that acoustic vibrations can be smoothly transmitted to the ink surface. An ultraviolet projector is fixed directly above the ink cartridge and can be controlled by an external computer. The computer can arbitrarily set the pattern projected onto the ink surface and the timing.

[0038] To achieve the manufacturing effect of a one-step non-smooth patterned corrugated film, the technical solution of this invention is as follows:

[0039] Step 1: Selecting Printing Ink

[0040] This 3D printing device is mainly applicable to any photosensitive resin ink that can be cured after being exposed to ultraviolet light. As for the properties of the ink after curing, there are no specific limitations. In addition, for other printing material inks, such as hydrogels and liquid crystal elastomers, if a photoinitiator can be added to enable the ink to be cured by ultraviolet light, this device can also be used to manufacture non-smooth patterned corrugated films.

[0041] The viscosity of the printing ink used in this 3D printing device will affect the corrugation forming efficiency. It is recommended to adjust the absolute viscosity of the printing ink between 1-8000 cP.

[0042] Step 2: Printing of non-smooth patterned corrugated film:

[0043] When the entire 3D printing device is working, the pre-prepared printing ink is first poured into the barrel. Then, the sound wave generator is turned on, and the vibration of the sound wave generator is transmitted to the ink surface, causing non-smooth ripples to be generated on the ink surface. By adjusting the output frequency and output volume of each generator in the sound wave generator group, the ink can directly obtain a non-smooth patterned rippled surface with different textures. Finally, the ultraviolet projector projects ultraviolet light onto the ink surface to complete the curing of the non-smooth patterned rippled film.

[0044] The sound wave generator has an output frequency range of 80-20000Hz and a sensitivity of 90dB.

[0045] Furthermore, by setting the output of each generator in the acoustic wave generator group to be the same, and adjusting the working frequency of the acoustic wave generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes denser. For example, by adjusting the working frequency of the acoustic wave generator to 1000Hz, 5000Hz, and 15000Hz, the ink surface exhibits low, medium, and high density of non-smooth patterned wavy texture, respectively. When the frequency of the acoustic wave generator is 15000Hz, the non-smooth patterned wavy texture generated on the ink surface is the densest, followed by 5000Hz, and the lowest at 1000Hz.

[0046] Furthermore, by setting the output of each generator in the sound wave generator group to be the same, and adjusting the working volume of the sound wave generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes steeper. For example, when the working volume of the sound wave generator is adjusted to 20dB, 50dB, and 90dB, the ink surface exhibits low, medium, and high steep non-smooth patterned wavy textures, respectively. When the volume of the sound wave generator is 90dB, the non-smooth patterned wavy texture generated on the ink surface is the steepest, followed by 50dB, and the lowest at 20dB.

[0047] Furthermore, by regionally setting the operating frequency of the sound wave generators in the sound wave generator group, the texture of the non-smooth patterned ripples generated on the ink surface will produce regional changes in density. For example, adjusting the sound wave generator a... 22 The operating frequency is 15000Hz, and the sound wave generator a 12 a 21 a 23 a 32 The operating frequency is 5000Hz, and the sound wave generator a 11 a 13 a 31 a 33 The operating frequency is 1000Hz, and the ink surface exhibits a non-smooth patterned ripple with a gradient of density decreasing from the center to the periphery.

[0048] Furthermore, by regionally adjusting the operating volume of the sound wave generators in the sound wave generator group, the texture of the non-smooth patterned ripples generated on the ink surface will produce regional height changes. For example, adjusting sound wave generator a... 22 The operating volume is 90dB, and the sound wave generator a 12 a 21 a 23 a 32 The operating volume is 50dB, and the sound wave generator a 11 a 13 a 31 a 33The operating volume is 20dB, and the ink surface exhibits a non-smooth patterned ripple with a gradient of steepness decreasing from the center to the surrounding area.

[0049] Different combinations of acoustic generator outputs can result in different non-smooth patterned corrugated surfaces, which will not be elaborated here.

[0050] The above describes an implementation method for adjusting the output of the acoustic wave generator group. This invention also allows for regional control of the non-smooth patterned corrugated film during the printing process through a domain-based printing method. First, the non-smooth patterned corrugated surface needs to be divided into regions. Each region is prepared sequentially. The preparation of a single region requires adjusting the output of each generator in the acoustic wave generator group, followed by region curing using a UV projector. The above process is repeated for each region until the entire non-smooth patterned corrugated surface printing process is completed.

[0051] Furthermore, by simultaneously adjusting the output of the acoustic wave generator group and the domain curing of the ultraviolet projector, non-smooth patterned corrugated films with flexible and controllable regional characteristics can be printed. For example, an ink surface can be divided into three concentric circular regions and printed by curing sequentially from the inside out. By setting the output of each generator in the acoustic wave generator group to be the same, and setting the working frequency of the acoustic wave generator to 15000Hz, 5000Hz and 1000Hz sequentially, the resulting non-smooth patterned corrugated film exhibits a trend of corrugation density increasing stepwise towards the center of the circle.

[0052] Furthermore, for example, an ink surface is designed with an internal hexagonal region. Printing is performed by curing the internal region first, followed by the external region. By setting the output of each generator in the acoustic wave generator group to be identical, the acoustic wave generator's operating frequency is set to 5000Hz and the operating volume to 90dB when printing the internal region; and the operating frequency is set to 1000Hz and the operating volume to 50dB when printing the external region. The resulting non-smooth patterned corrugated film exhibits a higher corrugation density and height in the internal region compared to the external region.

[0053] Step 3: Post-processing of non-smooth patterned corrugated films:

[0054] In the post-processing, the non-smooth patterned corrugated film prepared in step two is first immersed in anhydrous ethanol for 1 minute to remove residual ink from the printed film. Then, the cleaned corrugated film is irradiated with ultraviolet light for 5 seconds for secondary curing to ensure that the residual ink is completely cured. Subsequently, the prepared corrugated film is ground and polished to finally obtain the desired non-smooth patterned corrugated film.

[0055] To provide a more in-depth understanding of the present invention, detailed embodiments will be described below.

[0056] Example 1

[0057] First, fill the barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the acoustic wave generator assembly and set the operating frequency of the acoustic wave generator to 1000 Hz and the operating volume to 50 dB. Next, turn on the ultraviolet projector, set its irradiation area to a circle with a diameter of 15 cm, and the irradiation time to 2 seconds. The result is as follows: Figure 2 The non-smooth patterned corrugated film in the image. Then, keeping the operating volume of the sound generator constant, and setting the operating frequency to 5000Hz and 15000Hz respectively, the following results can be obtained: Figure 3 and Figure 4 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0058] Example 2

[0059] First, fill the barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the acoustic wave generator assembly and set the operating frequency of the acoustic wave generator to 5000 Hz and the operating volume to 20 dB. Next, turn on the ultraviolet projector, set its irradiation area to a circle with a diameter of 15 cm, and the irradiation time to 2 seconds. The result is as follows: Figure 5 The non-smooth patterned corrugated film in the image. Then, keeping the operating frequency of the sound generator constant, and setting the operating volume to 50dB and 90dB respectively, the following results can be obtained: Figure 3 and Figure 6 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0060] Example 3

[0061] First, fill the barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the sound wave generator assembly and set the operating volume of the sound wave generator to 50 dB. Simultaneously, adjust sound wave generator a... 22 The operating frequency is 15000Hz, and the sound wave generator a 12 a 21 a 23 a 32 The operating frequency is 5000Hz, and the sound wave generator a 11 a 13 a 31 a 33 The operating frequency is 1000Hz. Then, the ultraviolet projector is turned on, and its irradiation area is set to a circle with a diameter of 15cm, with an irradiation time of 2 seconds. The following results can be obtained: Figure 7 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0062] Example 4

[0063] First, fill the barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the sound wave generator assembly and set the operating frequency of the sound wave generator to 5000 Hz. Simultaneously, adjust sound wave generator a... 22 The operating volume is 90dB, and the sound wave generator a 12 a 21 a 23 a 32 The operating volume is 50dB, and the sound wave generator a 11 a 13 a 31 a 33 The operating volume is 20dB. Then, the UV projector is turned on, and its irradiation area is set to a circle with a diameter of 15cm, with an irradiation time of 2 seconds. The following results can be obtained: Figure 8 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0064] Example 5

[0065] First, fill the barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the acoustic generator assembly and set its operating frequency to 15000 Hz and the operating volume to 50 dB. Next, turn on the UV projector and set its irradiation area to a circle with a diameter of 5 cm for 2 seconds. Then, set the acoustic generator's operating frequency to 5000 Hz, turn on the UV projector again, and set its irradiation area to extend a 5 cm wide ring outside the cured area for 2 seconds. Finally, set the acoustic generator's operating frequency to 1000 Hz and repeat the previous irradiation step. During the intervals between printing different areas, cure a 1.5 mm wide ring to reduce structural gaps during area transitions. The result is as follows: Figure 9 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0066] Example 6

[0067] First, fill the printing barrel with photosensitive resin ink with an absolute viscosity of 500 cP. Then, turn on the acoustic wave generator assembly and set its operating frequency to 5000 Hz and volume to 90 dB. Next, turn on the UV projector and set its irradiation area to a hexagon with sides of 5.5 cm for 2 seconds. Subsequently, set the acoustic wave generator's operating frequency to 1000 Hz and volume to 50 dB. Then, turn on the UV projector and set its irradiation area to extend outside the cured area into a circle with a diameter of 15 cm for 2 seconds. During the printing intervals between different areas, cure a 1.5 mm wide hexagonal ring to reduce structural gaps during area transitions. The result is as follows: Figure 10 The non-smooth patterned corrugated film is then processed. The resulting corrugated film requires post-treatment such as ethanol cleaning and secondary curing.

[0068] In summary, this invention provides a 3D printing method and apparatus for one-step forming of non-smooth patterned corrugated films based on acoustic vibration. This invention improves the DLP printing process by utilizing acoustic vibration to create a unique corrugated surface from the printing ink. The invention allows for adjustment of parameters between the output of the acoustic generator assembly and the projection pattern of the ultraviolet projector, enabling the fabrication of various corrugated structures, with flexible and controllable internal corrugation structures in the non-smooth patterned corrugated films. The non-smooth patterned corrugated films prepared by this invention can be applied to various objects to achieve desired properties such as reduced drag, improved heat dissipation, and adjusted optical performance.

[0069] It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and those skilled in the art can still modify or make equivalent substitutions to the technical solutions. However, these modifications or substitutions will not change the essence of the technical solutions and should all be considered to fall within the protection scope of the appended claims of the present invention.

Claims

1. A 3D printing method for one-step forming non-smooth patterned corrugated film based on acoustic wave vibration, characterized in that, The 3D printing device used includes a sound wave generator group (1), a barrel (2), and an ultraviolet projector (3). The sound wave generator group (1) consists of a 3x3 rectangular array of sound wave generators. Each sound wave generator works independently. The sound wave generator is fixed on the substrate of the printing device with the sound output end of the sound wave generator facing upward. The bottom of the barrel (2) is directly connected to the sound output end of the speaker. The ultraviolet projector (3) is fixed directly above the barrel (2) and is controlled by an external computer. The computer can set the pattern and time that the ultraviolet projector (3) projects onto the ink surface. Includes the following steps: Step 1: Selecting Printing Ink This 3D printing device is suitable for photosensitive resin inks that can be cured after being exposed to ultraviolet light, wherein the absolute viscosity of the printing ink is adjusted to be between 1-8000 cP; Step 2: Printing of non-smooth patterned corrugated film: When the entire 3D printing device is working, enough printing ink is poured into the barrel (2), and then the sound wave generator group (1) is turned on. The vibration of the sound wave generator group (1) is transmitted to the ink surface, causing non-smooth ripples to be generated on the ink surface. The parameters between the output frequency and output sound volume of each generator in the sound wave generator group (1) and the projection pattern of the ultraviolet projector (3) are adjusted to prepare a variety of ripple structures. The non-smooth patterned ripple film with flexible and controllable internal region ripple structure is prepared. The output frequency range of the sound wave generator group (1) is 80-20000Hz, and the sensitivity is 90dB; Step 3: Post-processing of non-smooth patterned corrugated films: In the post-processing, the non-smooth patterned corrugated film prepared in step two is first immersed in anhydrous ethanol for 1 minute to remove residual ink from the printed film. Then, the cleaned corrugated film is irradiated with ultraviolet light for 5 seconds for secondary curing to ensure that the residual ink is completely cured. Subsequently, the prepared corrugated film is ground and polished to finally obtain the desired non-smooth patterned corrugated film.

2. The 3D printing method for one-step forming of non-smooth patterned corrugated thin films based on acoustic vibration according to claim 1, characterized in that: By setting the output of each generator in the acoustic generator group (1) to be the same and adjusting the working frequency of the acoustic generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes denser.

3. The 3D printing method for one-step forming of non-smooth patterned corrugated thin films based on acoustic vibration according to claim 2, characterized in that: By setting the output of each generator in the acoustic generator group (1) to be the same and adjusting the working volume of the acoustic generator from low to high, the non-smooth patterned wavy texture generated on the ink surface becomes steeper.

4. The 3D printing method for one-step forming of non-smooth patterned corrugated thin films based on acoustic vibration according to claim 3, characterized in that: By setting the operating frequency of the acoustic generator in the acoustic generator group (1) in a regional manner, the texture of the non-smooth patterned ripples generated on the ink surface will produce a regional density change.

5. The 3D printing method for one-step forming of non-smooth patterned corrugated thin films based on acoustic vibration according to claim 4, characterized in that: By regionally setting the operating volume of the acoustic generator in the acoustic generator group (1), the texture of the non-smooth patterned ripples generated on the ink surface will produce regional height changes.

6. The 3D printing method for one-step forming of non-smooth patterned corrugated thin films based on acoustic vibration according to claim 5, characterized in that: By setting up a work program, the ultraviolet projector (3) projects in different areas in sequence, locally curing the ink, and gradually obtaining an overall printed product. In each area, the sound wave generator group (1) outputs sound waves in real time, and prints a non-smooth patterned corrugated film with flexible and controllable area.

7. The film product printed by the 3D printing method according to claim 6, which uses acoustic vibration to form a non-smooth patterned corrugated film in one step, is characterized in that: The prepared non-smooth patterned corrugated thin film can be adapted to various objects to reduce resistance, enhance heat dissipation, and adjust optical performance.

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