Assembly-free ultra-micro camera based on additive manufacturing and its molding and manufacturing method

Abstract

The present invention relates to an assembly-free ultra-micro camera based on additive manufacturing and a molding manufacturing method thereof, comprising the following steps: S1, designing an integrated assembly-free ultra-micro camera three-dimensional model, wherein the three-dimensional model includes rotational and translational fits, wherein the rotational fit includes a rotating shaft and a sleeve that rotates with the rotating shaft, wherein a protrusion in the middle of the rotating shaft forms a drum-shaped structure with the sleeve, or a protrusion in the middle of the sleeve forms a drum-shaped structure with the rotating shaft, wherein the drum-shaped structure can significantly reduce the fitting clearance; S2, slicing the three-dimensional model; S3, using the result of the slicing process, performing photocuring printing using elastomer printing parameters, masking the elastic components after printing, and then performing secondary photocuring rigid treatment on the entire body to complete the manufacturing of the assembly-free ultra-micro camera. The assembly-free ultra-micro camera based on additive manufacturing and the molding manufacturing method thereof can eliminate the assembly process, reduce the production process, and improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of additive manufacturing, and in particular to an assembly-free ultra-micro camera based on additive manufacturing and a molding manufacturing method thereof. Background Art

[0002] Currently, the manufacturing of ultra-micro cameras primarily involves forming individual parts through machining or photolithography, which are then assembled to create the product. Traditional micro-ultra-micro cameras have complex assembly processes, low automation levels, and high labor costs, resulting in inefficient production. With the development of automated equipment, micro lenses commonly used in mobile phones and other electronic products are now widely assembled using semi-automated equipment guided by machine vision (CN 112427904 A), significantly reducing labor costs and improving production efficiency. However, this type of semi-automated equipment also suffers from long R&D cycles and high procurement costs. Due to size constraints, ultra-micro cameras generally require high manufacturing precision for their components. This is especially true for core functional components, such as shutter assemblies. High-precision parts are sometimes produced using vapor deposition combined with photolithography (CN 101446738 A). This inherently long production cycle, coupled with the pursuit of extremely high precision, makes the subsequent assembly process even more complex and time-consuming. Due to the complexity of the assembly process, designers often need to consider the design constraints imposed by the assembly, which limits product performance.

[0003] With the development of additive manufacturing technology, product design can break through the spatial constraints of traditional processing methods and bring more open design ideas. The integrated design concept of the product (CN 112977895 A) can greatly reduce the number of parts, thereby reducing the impact of the assembly process on production and manufacturing. With the improvement of the accuracy of additive manufacturing technology, assembly-free additive manufacturing technology has begun to enter people's field of vision. Assembly-free additive manufacturing technology advances the assembly process to the product design stage, and directly produces motion functional bodies through reasonable additive manufacturing processes. Under the premise of ensuring high precision, it greatly reduces or even eliminates the assembly process, thereby greatly improving product production efficiency and assembly accuracy. Therefore, this patent proposes to apply assembly-free additive manufacturing technology to the production and manufacturing process of ultra-micro cameras, thereby greatly improving the production efficiency and assembly accuracy of ultra-micro cameras. Summary of the Invention

[0004] To address the above-mentioned issues, one objective of the present invention is to provide an assembly-free ultra-micro camera based on additive manufacturing. This camera, which does not use any electronic components, has a simple structure, good environmental adaptability, and excellent stability. The compact size of this mechanical ultra-micro camera allows it to be used in smaller spaces. Another objective of the present invention is to provide a molding method for this assembly-free ultra-micro camera based on additive manufacturing, which eliminates the assembly process, reduces the production process, and improves production efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In one aspect, the present invention provides an assembly-free ultra-miniature camera based on additive manufacturing, comprising:

[0007] A cover plate and a base body, wherein the cover plate and the base body are rotated together by a first rotational cooperation mechanism to form a dark cavity for mounting a film and a lens, and a lens hole is provided on the base body;

[0008] a shutter mechanism comprising a swing block and an elastic driving component, wherein the swing block and the base are rotationally engaged via a second rotational engagement mechanism, and the elastic driving component is used to pull the swing block to rotate, so that the swing block covers or opens the lens aperture;

[0009] The switch mechanism is used to limit the swing block to the initial position so that the swing block covers the lens hole. The first rotation cooperation mechanism and the second rotation cooperation mechanism both include a rotating shaft and a sleeve that rotates with the rotating shaft. The middle part of the rotating shaft protrudes to form a drum-shaped structure with the sleeve, or the middle part of the sleeve protrudes to form a drum-shaped structure with the rotating shaft.

[0010] Furthermore, the switch mechanism and the base form a translational fit through a translational fit mechanism, and the translational fit mechanism includes a plurality of support columns, the two ends of the support columns are respectively connected to the switch mechanism and the base, and the diameter of the middle part of the support column is larger than the diameter of the two ends.

[0011] On the other hand, the present invention also provides a method for forming and manufacturing an assembly-free ultra-micro camera based on additive manufacturing, comprising the steps of:

[0012] Design an integrated assembly-free ultra-micro camera three-dimensional model, the three-dimensional model including a rotational engagement mechanism, the rotational engagement mechanism including a rotating shaft and a sleeve that rotates with the rotating shaft, the rotating shaft having a protrusion in the middle that cooperates with the sleeve to form a drum-shaped structure, or the sleeve having a protrusion in the middle that cooperates with the rotating shaft to form a drum-shaped structure, and the three-dimensional model also including an elastic component;

[0013] Slicing the three-dimensional model;

[0014] Using the result of the slicing process, performing light-curing printing using elastomer printing parameters;

[0015] After printing is completed, the elastic component is masked and the entire component is subjected to secondary photocuring and rigidification treatment to complete the manufacture of the assembly-free ultra-micro camera.

[0016] Furthermore, the rotating shaft is formed as a drum-shaped shaft, the middle of the drum-shaped shaft is formed as an arc protruding outward, and the diameter of the rotating shaft gradually decreases from the middle position to both ends; or the drum-shaped structure is that the shaft sleeve component is drum-shaped, the inner diameter of the shaft sleeve component is formed as an arc protruding inward, and the inner diameter of the shaft sleeve gradually decreases from the middle position to both ends.

[0017] Furthermore, the three-dimensional model also includes a translational cooperation mechanism, which includes a plurality of support columns for supporting the sliding components, and the diameter of the middle portion of the support column is larger than the diameter of the two ends.

[0018] Furthermore, the assembly-free ultra-micro camera three-dimensional model includes a physical printing area and a suspended printing area, and the viscosity of the raw material of the physical printing area is made lower than the viscosity of the raw material of the suspended printing area through temperature control.

[0019] Furthermore, the viscosity of the material used to form the physical printing area and the viscosity of the material used to form the suspended printing area are controlled by temperature. The temperature of the suspended printing area is 20°C-30°C, and the temperature of the physical printing area is 40°C-50°C.

[0020] Furthermore, the material used to print the assembly-free ultra-micro camera three-dimensional model is a polyacrylate-based polymer material with a photoinitiator, phenyl-2,4,6-trimethylbenzoyl lithium phosphite, added. The light-curing printing uses an ultraviolet light source with a wavelength of 405nm and a printing light intensity of 28mw-32mw / cm 2 .

[0021] Furthermore, the three-dimensional model of the ultra-micro camera includes:

[0022] A cover plate and a base body, wherein the cover plate and the base body are rotated together by the rotational cooperation mechanism to form a dark cavity for mounting a film and a lens, and a lens hole is provided on the base body;

[0023] A shutter mechanism, comprising a swing block and the elastic component, wherein the elastic component is an elastic driving component, wherein the swing block and the base are in a rotational engagement relationship via the rotational engagement mechanism, and the elastic driving component is used to pull the swing block to rotate, so that the swing block covers or opens the lens aperture;

[0024] The switch mechanism is used to limit the swing block to an initial position so that the swing block covers the lens hole, and the switch mechanism and the base are in the translational matching relationship.

[0025] Furthermore, the elastic driving component is a spring.

[0026] The present invention has the following advantages due to the adoption of the above technical solution:

[0027] 1. The assembly-free additive manufacturing technology of the present invention can integrate the camera shutter, cabin and other motion mechanisms into one integrated form without the need for an assembly process, greatly improving camera production efficiency and reducing camera manufacturing costs.

[0028] 2. The success rate of assembly-free additive manufacturing is improved by adopting a drum-shaped design for the rotating shaft, and the gap between parts is reduced. The gap between assembly-free parts does not exceed 0.08mm.

[0029] The translational fit includes several support columns for supporting the sliding components. The diameter of the middle portion of each support column is larger than that of the ends. These support columns provide support and fixation during printing, ensuring printing accuracy of the parts, thereby reducing the distance where parts may stick together. However, when translation occurs, the weakened root area is easily broken and removed. Therefore, the present invention can achieve the goal of eliminating the need for assembly of parts while minimizing the assembly gap of translational parts and eliminating the need for individual disassembly.

[0030] 3. The assembly-free additive manufacturing method of the present invention manufactures rigid structures and elastomeric structures in one printing process through a secondary curing process after optical valley printing, thereby expanding the application space of assembly-free additive manufacturing technology.

[0031] 4. The mechanical ultra-micro camera of the present invention does not use any electronic components, has a simple structure, and has good environmental adaptability and stability. The mechanical ultra-micro camera of the present invention is small in size and can be used in scenarios with limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limitations of the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components.

[0033] In the attached figure:

[0034] Figure 1 This is a three-dimensional model diagram of a micro camera;

[0035] Figure 2 yes Figure 1 A diagram of a micro camera with its cover opened;

[0036] Figure 3 (a) is a state diagram of the shutter mechanism in the initial state; (b) is a state diagram during the exposure process; (c) is a state diagram at the end of exposure;

[0037] Figure 4(a) is a cross-sectional view of the coupling between the rotating shaft and the shaft sleeve in the prior art; (b) is a schematic structural diagram of one embodiment of a drum-shaped structure; (c) is a schematic structural diagram of another embodiment of a drum-shaped structure;

[0038] Figure 5 is a schematic cross-sectional view of a switch mechanism and a translationally movable mating component located in the switch mechanism;

[0039] Figure 6 yes Figure 5 A partial enlarged schematic diagram of the support for translational mating components without requiring separate disassembly;

[0040] Figure 7 It is a schematic diagram of the curing device and the parameter stereolithography printing of the elastomer;

[0041] Figure 8 It is the status view of secondary rigid curing. DETAILED DESCRIPTION

[0042] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0043] An embodiment of the present invention provides an assembly-free ultra-micro camera based on additive manufacturing and a molding manufacturing method thereof, comprising the steps of: designing an integrated assembly-free ultra-micro camera three-dimensional model, the three-dimensional model including rotational fit and translational fit, the rotational fit including a rotating shaft and a sleeve that rotates with the rotating shaft, the middle portion of the rotating shaft protruding to form a drum-shaped structure with the sleeve, or the middle portion of the sleeve protruding to form a drum-shaped structure with the rotating shaft; slicing the three-dimensional model drawing; and completing the manufacturing of the assembly-free ultra-micro camera after an elastomer printing process and a secondary photocuring rigid treatment according to the slicing results. The molding manufacturing method of the present invention improves the success rate of assembly-free additive manufacturing by adopting a drum-shaped design for the rotating shaft fit, reduces the assembly gap of parts, and the assembly-free part gap does not exceed 0.08mm. The assembly-free ultra-micro camera molding manufacturing technology based on additive manufacturing can eliminate the assembly process, reduce the production process, and improve production efficiency.

[0044] Example 1

[0045] like Figures 1 to 4As shown, Embodiment 1 of the present invention provides an assembly-free micro-camera based on additive manufacturing. The assembly of the micro-camera 100 includes a cover plate 2, a base body 1, a shutter mechanism, and a switch mechanism. The cover plate 2 and the base body 1 form a dark cavity for mounting film and a lens through a first rotational engagement mechanism. The base body has a lens aperture 12. The shutter mechanism includes a swing block 3 and an elastic drive component 4. The swing block 3 and the base body 1 form a rotational engagement mechanism through a second rotational engagement mechanism. The elastic drive component 4 is used to pull the swing block 3 to rotate, causing it to cover or open the lens aperture 12. The switch mechanism is used to restrict the swing block 3 to its initial position so that it covers the lens aperture 12. The switch mechanism and the base body 1 are in a translational fit. The rotational fit includes rotating shafts 80, 80' and sleeves 90, 90' that rotate with the rotating shafts 80, 80'. The rotating shaft 80 has a protrusion in the middle, forming a drum-shaped structure with the sleeve 90, or the sleeve 90' ​​has a protrusion in the middle, forming a drum-shaped structure with the rotating shaft 80'. The switch mechanism includes a pressure cover 6 and a switch 5. The pressure cover 6 is fixed to the base body 1 and has a slide groove formed therein. The switch 5 can slide along the slide groove. One end of the slider 5 is used to resist or release the swing block 3.

[0046] The rotational fit between the base 1 and the cover plate 2, and the rotational fit between the swing block 3 and the base 1, are both designed with a drum-shaped structure. The drum-shaped structure is designed such that the rotating shaft is formed into a drum-shaped shaft 80, the middle of the drum-shaped shaft 80 is formed into an arc protruding outward, and the diameter of the rotating shaft 80 gradually decreases from the middle position to both ends; or the drum-shaped structure is designed such that the sleeve 90' ​​is drum-shaped, the inner diameter of the sleeve 90' ​​is formed into an arc protruding inward, and the inner diameter of the sleeve 90' ​​gradually decreases from the middle position to both ends. The clearance for cleaning residues refers to the gap that opens when high-pressure gas or liquid enters the interior of the part. The clearance for conventional rotating shaft parts is consistent with the clearance for cleaning residues 1. The clearance for cleaning residues 9, 9' of the drum-shaped design of rotating shaft parts is consistent with that of conventional rotating shaft parts, but the clearance for cleaning residues 8, 8' of the drum-shaped design is smaller than that of conventional parts. Therefore, the drum-shaped design of rotating shaft parts can reduce the clearance for cleaning residues while ensuring that the clearance for cleaning residues in photo-curing additive manufacturing remains unchanged.

[0047] By designing the pivot joint into a drum-shaped structure, the fitting gap is reduced and it is convenient to clean up the excess printing material. The translational fitting connection between the switch 5 and the base 6 adopts the above-mentioned translational fitting design, which can play a supporting role while reducing the fitting gap. Due to the weakening of the root, after printing is completed, moving the fitting slider 5 can make the support shaft 11 fall off, and it can be used after a little cleaning.

[0048] The switch mechanism and base 1 form a translational fit through a translational fit mechanism comprising several support columns 11, each connecting the switch mechanism to base 1 at its ends. The diameter of the middle portion of each support column 11 is larger than that of the ends. When exposure is required, the connection between the support columns 11 and the switch 5 is broken, causing the switch 5 to release the swing block 3. The swing block 3, under the force of the spring drive component 4, rotates, allowing the lens aperture 12 to leak out for exposure.

[0049] The elastic drive member shown is preferably a spring 4 .

[0050] The exposure process of the micro camera includes the following steps:

[0051] When the swing block 3 is at the initial position, Figure 3 As shown in (a), the right half of the swing block 3 covers the lens hole 12, the spring 4 is stretched and in the charged state, and the switch 5 is stuck in the swing block 3;

[0052] Turn on the switch 5, the spring 4 drives the swing block 3 to rotate counterclockwise around the axis. At this time, the empty space in the middle of the swing block 3 faces the lens hole 12, and the exposure process begins. Figure 3 (b)

[0053] The swing block 3 moves to the top cut-off limit position, and the left half of the shutter covers the lens hole 12 again, and the exposure process ends. Figure 3 (c) shown.

[0054] The exposure time is determined by the elastic properties of spring 4.

[0055] The assembly-free additive manufacturing technology of the present invention eliminates the need for shutter components and the assembly of the micro-camera's cabin, reducing production processes and enabling rapid production of micro-cameras. The micro-mechanical camera of the present invention does not use any electronic components, has good environmental adaptability, and is highly reliable.

[0056] Example 2

[0057] Combine Figure 1 、 Figure 2 as well as Figure 4 As shown, the present invention takes the manufacture of an assembly-free ultra-micro camera based on additive manufacturing as an example. The length x width x height of the ultra-micro camera 100 is ≤ 10 mm x 10 mm x 10 mm. The molding and manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing includes the following steps:

[0058] S1. Designing an integrated assembly-free ultra-micro camera three-dimensional model, wherein the three-dimensional model further includes an elastic component;

[0059] S2, slicing the three-dimensional model;

[0060] S3, using the result after the slicing process, printing using elastomer printing parameters;

[0061] S4. After printing is completed, the elastic component is masked and the entire component is subjected to secondary photocuring and rigidification treatment to complete the manufacture of the assembly-free ultra-micro camera.

[0062] The three-dimensional model includes rotational fit and translational fit, wherein the rotational fit is achieved through a rotational fit mechanism, and the rotational fit mechanism includes a rotating shaft and a sleeve rotationally fitted with the rotating shaft.

[0063] In order to reduce the assembly clearance of the assembly and improve the success rate of assembly-free additive manufacturing, the rotating shaft and the sleeve are designed as drum-shaped structures, and residue cleaning gaps 8, 8' are formed between the two ends of the rotating shaft and the two ends of the sleeve component, and rotational fitting gaps 9, 9' are formed in the middle of the rotating shaft and the middle of the sleeve component.

[0064] like Figure 4 As shown, the drum-shaped structure is designed so that the shaft is formed into a drum-shaped shaft, the middle of the drum-shaped shaft is formed into an outwardly protruding arc, and the diameter of the shaft gradually decreases from the middle position to both ends; or the drum-shaped structure is designed so that the sleeve component is drum-shaped, the inner diameter of the sleeve component is formed into an inwardly protruding arc, and the inner diameter of the sleeve component gradually decreases from the middle position to both ends. The cleaning residue gap refers to the gap that opens when high-pressure gas or liquid enters the interior of the part. The fitting clearance of conventional shaft parts is consistent with the cleaning residue gap 1. The cleaning residue gap 9,9' of the drum-shaped design of shaft parts is consistent with that of conventional shaft parts, but the fitting clearance 8,8' of the drum-shaped design is smaller than that of conventional parts. Therefore, the drum-shaped design of shaft parts can reduce the fitting clearance while ensuring that the cleaning residue gap of light-curing additive manufacturing remains unchanged.

[0065] It is preferred that the fitting clearances 9, 9' do not exceed 0.08 mm.

[0066] like Figure 5 and Figure 6 As shown, the three-dimensional model also includes a translational fit, achieved through a translational fit mechanism. The translational fit includes several support columns 11 for supporting sliding components. These support columns 11 are formed with a larger diameter in the middle than at the ends. These support columns 11 provide support and fixation during printing, ensuring part printing accuracy and reducing the distance over which parts may stick. However, the weakened root area is easily broken and removed during translation. Therefore, the present invention achieves part-free assembly while minimizing assembly clearances for translational parts.

[0067] The assembly of the miniature camera 100 includes a cover plate 2, a base body 1, a shutter mechanism, and a switch mechanism. The cover plate 2 and base body 1 rotate together via a first rotational engagement mechanism to form a dark cavity for mounting film and a lens. The base body has a lens aperture 12. The shutter mechanism includes a swing block 3 and an elastic component, which is an elastic drive component 4. The swing block 3 rotates with the base body 1 via a second rotational engagement mechanism. The elastic drive component 4 is used to pull the swing block 3 to rotate, causing it to cover or open the lens aperture 2. The switch mechanism is used to restrain the swing block 3 in an initial position and is in a translational engagement relationship with the base body 1. The switch mechanism includes a pressure cover 6 and a switch 5. The pressure cover 6 is fixed to the base body 1 and has a slide groove formed therein. The switch 5 slides along the slide groove. One end of the slider 5 is used to abut or release the swing block 3.

[0068] The rotational fit between the base 1 and the cover plate 2, and the rotational fit between the swing block 3 and the base 1 both adopt the above-mentioned drum-shaped structure design. By designing the rotating shaft joint into a drum-shaped structure, the fit gap is reduced and it is beneficial to clean up excess printing materials; the translational fit connection between the switch 5 and the base 6 adopts the above-mentioned translational fit design, which can play a supporting role while reducing the fit gap. Due to the weakening of the root, after printing is completed, moving the matching slider 5 can make the support shaft 11 fall off, and it can be used after a little cleaning.

[0069] The switch mechanism and base 1 form a translational fit through a translational fit mechanism comprising several support columns 11, each connecting the switch mechanism to base 1 at its ends. The diameter of the middle portion of each support column 11 is larger than that of the ends. When exposure is required, the connection between the support columns 11 and the switch 5 is broken, causing the switch 5 to release the swing block 3. The swing block 3, under the force of the spring drive component 4, rotates, allowing the lens aperture 12 to leak out for exposure.

[0070] The elastic drive member shown is preferably a spring 4 .

[0071] The exposure process of the micro camera includes the following steps:

[0072] When the swing block 3 is at the initial position, Figure 3 As shown in (a), the right half of the swing block 3 covers the lens hole 12, the spring 4 is stretched and in the charged state, and the switch 5 is stuck in the swing block 3;

[0073] Turn on the switch 5, the spring 4 drives the swing block 3 to rotate counterclockwise around the axis. At this time, the empty space in the middle of the swing block 3 faces the lens hole 12, and the exposure process begins. Figure 3 (b)

[0074] The swing block 3 moves to the top cut-off limit position, and the left half of the shutter covers the lens hole 12 again, and the exposure process ends. Figure 3 (c) shown.

[0075] The exposure time is determined by the elastic properties of spring 4.

[0076] The assembly-free additive manufacturing technology of the present invention eliminates the need for shutter components and the assembly of the micro-camera's cabin, reducing production processes and enabling rapid production of micro-cameras. The micro-mechanical camera of the present invention does not use any electronic components, has good environmental adaptability, and is highly reliable.

[0077] The assembly-free camera additive manufacturing technology described in the present invention assembles the camera shutter assembly and cabin in advance during the model design stage, so that the camera shutter assembly and the cabin are integrated into a structure with a shutter function, in which the rotating shaft and the switch can move freely. The internal coordination of the integrated structure is divided into rotating shaft type and translation type. By adopting a drum shape for the rotating shaft type coordination and a method of avoiding the need to separately remove supports for the translation type coordination, the success rate of assembly-free additive manufacturing is improved, the gap between parts assembly is reduced, and the gap between assembly-free parts does not exceed 0.08 mm.

[0078] The ultra-micro camera designed and manufactured using assembly-free additive manufacturing technology has a size of ≤10mmX10mmX10mm, is not assembled by fasteners, and is fastened by a falcon-shaped structure. The ultra-micro camera does not contain any electronic devices and uses a mechanical structure to realize the camera function, and has excellent environmental applicability and reliability.

[0079] like Figure 7 and Figure 8 As shown, the preparation method of the elastic driving component includes the following steps:

[0080] Printing the assembly in one step according to the manufacturing process parameters of the elastic drive component;

[0081] Masking the elastic component 107 and performing secondary curing on the unmasked component 106;

[0082] After the secondary curing is completed, the unmasked part 106 is formed into the rigid part, and the masked part 107 is formed into the elastic driving part.

[0083] The curing device includes a light-curing liquid tank 101, a light-curing printing projection light source 104, a light-curing printing platform 102, a micro camera 100, and a secondary curing light source 105. The light-curing printing platform 102 is located in the light-curing liquid tank 101, the micro camera 100 is located on the light-curing printing platform 102, the light-curing printing projection light source 104 is used to print the elastomer on the micro camera 100, and the secondary curing light source 105 is used to perform secondary curing on the micro camera 100. The curing liquid tank 101 contains a polymer material for light curing.

[0084] During the assembly-free ultra-micro camera 3D model printing process, the printing area is divided into a suspended printing area and a solid printing area based on whether there is a solid object beneath each layer. The viscosity of the material used to form the solid printing area is lower than that of the material used to form the suspended printing area. The viscosity of the material used to form the solid printing area and the viscosity of the material used to form the suspended printing area are controlled by adjusting the temperature: the temperature of the suspended printing area is controlled at 20°C-30°C, and the temperature of the solid printing area is controlled at 40°C-50°C.

[0085] The assembly-free viscosity control process uses high viscosity parameters in the suspended area, and the unmolded resin provides partial support force. Low viscosity parameters are used in the solid area to facilitate the outflow of the unmolded resin and improve the success rate of assembly-free manufacturing.

[0086] The material used to print the assembly-free ultra-micro camera three-dimensional model is a polyacrylate-based polymer material with a photoinitiator, phenyl-2,4,6-trimethylbenzoyl lithium phosphite. The light-curing printing uses an ultraviolet light source with a wavelength of 405 nm, and the printing light intensity parameter is 28 mw-32 mw / cm 2 .

[0087] After printing is completed, the surface is cleaned three times with anhydrous ethanol, and the fitting gap is cleaned with a high-pressure air gun to flush out the residual liquid material. Then, it is placed in an oven and heated at 50°C for 1 hour before being removed. After removal, the spring 4 is coated with black dye, and the entire print is placed in a light curing box and irradiated with high-intensity light for 1 hour. Then, it is taken out and the surface is cleaned again to complete the manufacturing of the camera housing and shutter mechanism of the assembly-free integrated additive manufacturing.

[0088] The assembly-free additive manufacturing method of the present invention enables the integrated molding of camera shutters, chambers, and other moving mechanisms, eliminating the need for assembly, significantly improving camera production efficiency and reducing manufacturing costs. The printed mechanical ultra-micro camera uses no electronic components, boasts a simple structure, and exhibits excellent environmental adaptability and stability. The mechanical ultra-micro camera of the present invention is compact and can be used in smaller spaces.

[0089] The present invention is intended to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A molding and manufacturing method of an assembly-free ultra-micro camera based on additive manufacturing, characterized in that: Including steps: Design an integrated assembly-free ultra-micro camera three-dimensional model, the assembly-free ultra-micro camera three-dimensional model includes a rotational cooperation mechanism, the rotational cooperation mechanism includes a rotating shaft and a shaft sleeve that rotates with the rotating shaft, the central protrusion of the rotating shaft forms a drum-shaped structure with the shaft sleeve, or the central protrusion of the shaft sleeve forms a drum-shaped structure with the rotating shaft, and the assembly-free ultra-micro camera three-dimensional model also includes an elastic component; Slicing the three-dimensional model of the assembly-free ultra-micro camera; Using the result of the slicing process, performing light-curing printing using elastic component printing parameters; After printing is completed, the elastic component is masked and the entire component is subjected to secondary photocuring and rigidification treatment to complete the manufacture of the assembly-free ultra-micro camera.

2. The molding and manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 1, characterized in that: The assembly-free ultra-micro camera three-dimensional model also includes: A cover plate and a base body, wherein the cover plate and the base body are rotated together by the rotational cooperation mechanism to form a dark cavity for mounting a film and a lens, and a lens hole is provided on the base body; A shutter mechanism, comprising a swing block and the elastic component, wherein the elastic component is an elastic driving component, wherein the swing block and the base are in a rotational engagement relationship via the rotational engagement mechanism, and the elastic driving component is used to pull the swing block to rotate, so that the swing block covers or opens the lens aperture; The switch mechanism is used to limit the swing block to an initial position so that the swing block covers the lens hole, and the switch mechanism and the base are in a translational matching relationship.

3. The manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 1, characterized in that: The rotating shaft is formed as a drum-shaped shaft, the middle of the drum-shaped shaft is formed as an arc protruding outward, and the diameter of the rotating shaft gradually decreases from the middle position to both ends; or the sleeve is drum-shaped, the inner diameter of the sleeve is formed as an arc protruding inward, and the inner diameter of the sleeve gradually decreases from the middle position to both ends.

4. The molding and manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 2, characterized in that: The three-dimensional model further includes a translational cooperation mechanism, which includes a plurality of support columns for supporting the switch mechanism, and the diameter of the middle portion of the support column is larger than the diameter of the two ends.

5. The forming and manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 3, characterized in that: The assembly-free ultra-micro camera three-dimensional model includes a physical printing area and a suspended printing area. The viscosity of the material in the physical printing area is made lower than the viscosity of the material in the suspended printing area through temperature control.

6. The manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 5, characterized in that: The viscosity of the material used to form the physical printing area and the viscosity of the material used to form the suspended printing area are controlled by temperature. The temperature of the suspended printing area is 20°C~30°C, and the temperature of the physical printing area is 40°C~50°C.

7. The manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 2, characterized in that: The material used to print the assembly-free ultra-micro camera three-dimensional model is a polyacrylate-based polymer material with a photoinitiator, phenyl-2,4,6-trimethylbenzoyl lithium phosphite. The light-curing printing uses an ultraviolet light source with a wavelength of 405 nm and a printing light intensity of 28 mw / cm 2 ~32mw / cm 2 .

8. The manufacturing method of the assembly-free ultra-micro camera based on additive manufacturing according to claim 7, characterized in that: The elastic driving component is a spring.

Images