A nail printer and a printing method thereof

Abstract

The embodiment of the present disclosure provides a nail printing machine and a printing method thereof, and relates to the technical field of printing equipment. The nail printing machine comprises a nail printing machine body and a turnover device arranged on the nail printing machine body. The turnover device comprises a support structure, a turnover connecting structure, a plurality of printing platforms, a gear assembly and a driving structure. The turnover connecting structure comprises a plurality of groups of rotatable connecting pieces and the plurality of printing platforms which are fixedly connected with the plurality of groups of connecting pieces. The plurality of printing platforms are rotatably arranged on the support structure through the plurality of groups of connecting pieces. The connecting pieces are provided with the gear assembly in the direction in which the printing platform axially extends outward. The gear assembly comprises coaxially adjacent guide wheels and driven wheels. The guide wheels and the driven wheels of adjacent gear assemblies are oppositely arranged in the axial direction. The driving structure comprises a driving motor, a driving wheel, a first belt and a second belt.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of printing equipment technology, and more particularly to a nail printer and a printing method thereof. Background Technology

[0002] As a trendy beauty accessory, nail art is widely loved by consumers. Traditional nail art relies on manual hand-painting, which is inefficient and results in poor consistency of patterns across different pieces. Nail stickers are prone to peeling and falling off after application, and the overall mass production cost is high, making it difficult to achieve large-scale, standardized production of pre-made nail art pieces. Therefore, machine-made nail art pieces, with their advantages of exquisite patterns and convenient use, are gradually gaining popularity in the market.

[0003] Currently, the mass production processes for prefabricated nail art pieces in the industry are mainly divided into two categories: The first is full-color integrated 3D printing, where coloring is completed simultaneously during the resin layer-by-layer stacking process, relying on multi-layer color superposition to reproduce the target pattern. This solution requires the development of a complex layered color matching, color calibration, and color mixing control system, resulting in significant R&D investment and a long equipment debugging cycle. Furthermore, single-layer cured resin inherently has color differences, and after multi-layer stacking, the finished product is prone to issues such as graying and color shifts, making it difficult to guarantee product yield and appearance consistency. The second method involves first 3D printing a pure white nail art blank, and then using UV printing equipment to spray color onto the workpiece surface. Because the nail art piece has an overall curved surface structure, when the workpiece is fixed and sprayed, the UV nozzle can only be perpendicularly aligned with the center area of ​​the nail art piece. There is a significant difference in the spraying distance between the curved sides and edges and the nozzle, which easily leads to uneven ink coating thickness, causing defects such as whitening at the edges of the nail art piece, localized missed spraying, and color differences, resulting in the finished product's appearance quality failing to meet standards. Summary of the Invention

[0004] Embodiments of this disclosure provide a nail printer and a printing method thereof that can at least partially solve the above-described problems or other problems in the art.

[0005] According to a first aspect of this disclosure, a nail printer is provided, comprising: a nail printer body and a flipping device disposed on the nail printer body. The flipping device includes: a support structure; a flipping connection structure including multiple sets of rotatable connectors and multiple printing platforms correspondingly fixed to the multiple sets of connectors, the multiple printing platforms being rotatably disposed on the support structure via the multiple sets of connectors, and gear assemblies being disposed on the connectors in a direction extending outward along the axial direction of the printing platforms; the gear assemblies including coaxially adjacent guide wheels and driven wheels, the guide wheels and driven wheels of adjacent gear assemblies being installed in opposite directions along the axial direction; wherein, the side closer to the support structure is a first driven wheel, and the other side is a second driven wheel; and a drive structure including a drive motor, a drive wheel, a first belt and a second belt, the first belt closing around the first driven wheel, the second belt closing around the second driven wheel, the drive motor driving the first belt and the second belt to rotate via the drive wheel, thereby driving the gear assembly, the multiple sets of connectors and the multiple printing platforms to rotate synchronously.

[0006] In some embodiments of this disclosure, the driving pulley includes a first driving pulley and a second driving pulley: a first belt closes around the first driving pulley and the first driven pulley, and a second belt closes around the second driving pulley and the second driven pulley.

[0007] In some embodiments of this disclosure, the support structure includes two support plates disposed opposite to each other.

[0008] In some embodiments of this disclosure, an adjusting wheel is also fixedly provided on the support plate, and a first belt surrounds the adjusting wheel to adjust the tension of the first belt.

[0009] In some embodiments of this disclosure, the connector includes a bearing and a connecting seat; the connecting seat includes a rotating shaft connector and a bracket, the bracket being sleeved on one end of the rotating shaft connector and fixedly connected to the printing platform; the bearing is sleeved on the outer wall of the rotating shaft connector and fixedly embedded inside the support plate.

[0010] In some embodiments of this disclosure, the drive wheel is fixedly mounted on the power output shaft of the drive motor.

[0011] In some embodiments of this disclosure, the nail printer is further provided with an adjustment structure for adjusting the tension of the belt. The adjustment structure includes an adjustment plate and a fixed plate, which is movably disposed on the drive motor and fitted with a drive wheel. The fixed plate has a first state and a second state. In the first state, the fixed plate can be translated relative to the adjustment plate to change the center distance between the drive wheel and the gear assembly. In the second state, the fixed plate and the adjustment plate are locked relative to each other to maintain the tension of the second belt.

[0012] In some embodiments of this disclosure, the printed workpiece is placed on a printing platform, and the printed workpiece is an arc-shaped workpiece.

[0013] In some embodiments of this disclosure, the support structure further includes a base plate; the base plate is disposed on the side of the support plate away from the printing platform and is used to fix the flipping device to the nail printer body.

[0014] In some embodiments of this disclosure, the nail printer body includes a printing head, and a flipping device is disposed directly below the printing head.

[0015] According to a second aspect of this disclosure, a printing method for a nail art printer is provided. The nail art printer includes a flipping device with multiple printing platforms. The printing method is applied to the nail art printer and includes: controlling the flipping device to place the multiple printing platforms in an initial posture, and mounting multiple printing workpieces correspondingly on the multiple printing platforms; dividing the surface of the printing workpieces into multiple printing areas according to the curved contour of the printing workpieces; controlling the flipping device to drive the multiple printing platforms to synchronously flip by a preset angle so that the target printing area of ​​the multiple printing workpieces faces the printing head, and performing printing and coloring; wherein the target printing area is the area in the multiple printing areas where the current printing and coloring is performed.

[0016] In some embodiments of this disclosure, the method further includes: while controlling the flipping device to drive multiple printing platforms to flip synchronously at a preset angle, controlling the printing head to rise and fall, so that the distance between the target printing area and the printing head is maintained within a preset printing distance range.

[0017] In some embodiments of this disclosure, the method further includes: controlling the print head to move in a horizontal plane so that the projection of the print head covers multiple print platforms.

[0018] According to a third aspect of this disclosure, a method for manufacturing a nail printer is provided. The method includes: rotatably mounting multiple printing platforms onto a support structure via a flip-connection structure, the flip-connection structure including multiple printing platforms, multiple sets of connectors, and multiple sets of gear assemblies, each gear assembly including coaxially adjacent guide wheels and driven wheels, the guide wheels and driven wheels of adjacent gear assemblies having opposite axial orientations; assembling a drive structure that is transmissionally connected to the flip-connection structure, the drive structure including a drive motor, a drive wheel, a first belt, and a second belt, such that the first belt closes around the driven wheel on the side closer to the support structure, and the second belt closes around the driven wheel on the side farther from the support structure; and fixing the support structure, the flip-connection structure, and the drive structure onto a printer body; wherein the drive structure synchronously drives the multiple printing platforms to flip as a whole via the first belt and the second belt.

[0019] The nail printer and printing method disclosed herein utilize a dual-belt rotating device to drive the nail art piece to rotate at multiple angles, ensuring that each area of ​​the curved surface of the nail art piece is sequentially aligned with the printing head. This maintains a stable and consistent spraying distance between the printing head and the curved surface of the nail art piece, guaranteeing uniform ink coating thickness and preventing issues such as missed or thin spraying on the sides and edges of the nail art piece. Furthermore, this disclosure first forms a pure white nail art blank, then applies a single layer of color printing to the outer surface of the workpiece, eliminating the need to develop a complex layered color control system and reducing the difficulty of equipment debugging and the barrier to large-scale production.

[0020] It should be understood that the description in this section is not intended to identify key or important features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description.

[0021] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0022] Other features, objects, and advantages of this disclosure will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a nail printer apparatus provided according to an exemplary embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of the flipping device provided according to an exemplary embodiment of the present disclosure; Figure 3 This is a schematic diagram of the flip connection structure provided according to an exemplary embodiment of the present disclosure; Figure 4 This is a schematic diagram of the adjustment structure provided according to an exemplary embodiment of the present disclosure; Figure 5 This is a schematic diagram of the printing process provided according to an exemplary embodiment of the present disclosure; Figure 6 This is a flowchart of a printing method provided according to an exemplary embodiment of the present disclosure; Figure 7 This is a schematic diagram of the printing method provided according to an exemplary embodiment of the present disclosure; Figure 8 This is a flowchart of a method for manufacturing a nail printer according to an exemplary embodiment of the present disclosure.

[0023] Figure Labels

[0024] 10 nail printers; Tilting device 20: Support structure 21; Flip connection structure 22: Connector 220: Bearing 2201; Connector 2202: Rotary shaft connector 2203 (2203'), bracket 2204; Printing platform 221; Gear assembly 222: Guide wheel 223; Driven wheel 224: First driven wheel 2241, second driven wheel 2242; Drive structure 23: Drive motor 231; First belt 233; Second belt 234; Drive wheel 232: First drive wheel 235, second drive wheel 236; Adjustment wheel 24; Base plate 25; Adjustment structure 26: fixed plate 261, adjusting plate 262, fixing screw 263, adjusting screw 264; Print the front of the car 30; Detailed Implementation

[0025] The various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] The term “exemplary” as used herein means “serving as an example, implementation method, or illustration.” Any implementation method described herein as “exemplary” is not necessarily to be construed as superior to or better than other implementation methods.

[0027] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, apparatuses, means, elements, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0028] Some embodiments of this disclosure provide a nail printer. Figure 1 This is a nail printer provided according to an exemplary embodiment of the present disclosure. Figure 2 This is a schematic diagram of the structure of a flipping device provided according to an exemplary embodiment of the present disclosure.

[0029] like Figure 1 As shown, the nail printer 10 includes: a printer body, a flipping device 20, and a printing carriage 30 disposed on the printer body. Figure 2As shown, the flipping device 20 includes a support structure 21, a flipping connection structure 22, and a drive structure 23.

[0030] The support structure 21 serves as the mounting carrier for the flipping device 20, providing mounting support for the flipping connection device. In a specific embodiment of this disclosure, the support structure 21 consists of two opposing support plates. It should be understood that the support structure 21 is not limited to this form and may also adopt other structural forms such as a support base, cantilever bracket, or integrally molded frame. This embodiment does not impose any limitations on this. The support structure 21 also includes a base plate 25 for fixing the flipping device 20 to the printer body.

[0031] The flip-connection structure 22 includes multiple sets of rotatable connectors 220 and multiple printing platforms 221 fixedly connected to the multiple sets of connectors 220. Figure 2 Each set of connectors 220 is correspondingly assembled at both ends of a printing platform 221 and rotatably mounted on two support plates, so that the printing platform 221 can rotate relative to the support structure 21.

[0032] refer to Figure 3 , Figure 3 This is a schematic diagram of the flip-connection structure 22. The connector 220 includes a bearing 2201 and a connecting seat 2202. The connecting seat 2202 includes a rotating shaft connector 2203 and a bracket 2204. The bracket 2204 is rotatably fitted onto the rotating shaft connector 2203 and is fixedly connected to the printing platform 221. The bearing 2201 is fitted onto the side of the rotating shaft connector 2203 away from the bracket 2204. The bearing 2201 is fixedly embedded inside the support plate, allowing the rotating shaft connector 2203 to pass through the interior of the support plate. It is understood that the rotational assembly form between the connector 220 and the support plate is not limited to this. In addition to the bearing assembly structure, axial positioning can also be achieved using a pin and snap ring; other rotational connection methods, such as integrally hinged with the support plate, can also be used. This disclosure does not specifically limit these methods.

[0033] A gear assembly 222 is provided on the connector 220 extending outward along the axial direction of the printing platform 221. Each gear assembly 222 includes a driven wheel 224 and a guide wheel 223 arranged coaxially. The guide wheel 223 and driven wheel 224 of adjacent gear assemblies 222 are arranged in opposite directions. The guide wheel 223 in the gear assembly 222 is hinged to the rotating shaft connector 2203 to guide the belt direction; the driven wheel 224 is fixedly connected to the rotating shaft connector 2203 to drive the connector 220 to rotate synchronously. The driven wheel 224 on the side of the gear assembly 222 closer to the support structure 21 is the first driven wheel 2241, and the driven wheel 224 on the side farther from the support structure 21 is the second driven wheel 2242. The connector 2202 is fixedly connected to the printing platform 221. When the driven wheel 224 drives the connector 220 to rotate, it can synchronously drive the printing platform 221 to rotate. (See reference again) Figure 3 The printing platform 221 extends outward along the axial direction. On the side without the gear assembly 222, only the bearing 223 is fitted, and no transmission parts are required. Therefore, a shorter shaft connector 2203' can be used for assembly on this side. The combination of long and short shaft connectors can adapt to different part layouts on both sides, simplify part size, reduce the axial space occupied by the whole machine, and optimize the structural compactness.

[0034] The drive structure 23 includes a drive motor 231, a drive pulley 232, a first belt 233, and a second belt 234. The drive pulley 232 includes a first drive pulley 235 and a second drive pulley 236, which are fixedly mounted on the power output shaft of the drive motor 231. The first belt 233 is closed around the first drive pulley 235 and the first driven pulley 2241, and the second belt 234 is closed around the second drive pulley 236 and the second driven pulley 2242. When the drive motor 231 is running, it drives the first drive pulley 235 and the second drive pulley 236 to rotate; the first drive pulley 235 pulls the first belt 233 to move, driving the first driven pulley 2241 to rotate, thereby causing the printing platform 221 corresponding to the first driven pulley 2241 to rotate; the second drive pulley 236 synchronously pulls the second belt 234 to move, driving the second driven pulley 2242 to rotate, thereby causing the printing platform 221 corresponding to the second driven pulley 2242 to rotate.

[0035] By employing a dual-belt drive structure to synchronously rotate multiple printing platforms 221, the posture and angle of the printed workpiece can be flexibly adjusted, ensuring that all areas of the curved surface of the workpiece are directly facing the printing head 30. This guarantees uniform coloring at the edges of the workpiece and effectively solves the problems of localized missed spraying and uneven coating thickness on curved workpieces. Simultaneously, multi-station parallel processing increases production capacity, supports large-scale standardized production, and reduces the processing cost per piece.

[0036] Furthermore, as a simple implementation of this disclosure, a single-belt structure can be used to achieve the rotation of the printing platform 221. However, the single-belt solution requires the arrangement of guide wheels 223 between adjacent driven pulleys 224. The guide wheels 223 only serve to limit the belt movement and cannot drive the printing platform 221 to rotate. Under the premise of consistent overall machine dimensions, the guide wheels 223 will occupy axial arrangement space, resulting in limited workstation layout. For example, the dual-belt solution of this disclosure, through the alternating arrangement of gear assemblies 222, can drive three sets of printing platforms 221 to rotate synchronously within the same installation space in the layout of "driven pulley 224-guide wheel 223-driven pulley 224". In contrast, the single-belt structure can only arrange two sets of printing platforms 221 in the same space, and the space utilization and batch processing efficiency are significantly better than the single-belt solution. At the same time, this disclosure forms two independent and non-interfering belt drive circuits: when one set of belts fails or is repaired and replaced, the workstation corresponding to the other set of drive circuits can continue to operate without stopping the entire machine, effectively improving equipment uptime. Furthermore, this design breaks down long-distance transmission into two shorter, independent belt loops, reducing the transmission span of a single belt. This results in a more balanced tension distribution within the belt, leading to higher precision in multi-station synchronous rotation during long-term operation. Compared to single, ultra-long belt drives, this design effectively reduces synchronization errors caused by belt stretching and slippage, thus improving color consistency.

[0037] In some embodiments of this disclosure, the dual-belt structure can also be arranged on both sides of the support structure 21, forming a bidirectional constraint on the rotating shaft through the belts on both sides. This arrangement can overcome the load imbalance defect of the single-sided transmission scheme, avoid problems such as the rotating shaft being swayed by unidirectional tension and the printing platform 221 shaking, improve the synchronization accuracy of the flipping of multiple printing platforms 221, make the printing distance of each area of ​​the arc-shaped workpiece stable and consistent, optimize the coloring effect of the curved edge, and improve the yield of finished products.

[0038] refer to Figure 4 , Figure 4 This is a schematic diagram of the adjustment structure 26. The adjustment structure 26 includes a fixed plate 261 and an adjustment plate 262. The fixed plate 261 is sleeved on the outside of the drive wheel 232 without contact, and has an adjustment screw 264 at its bottom end that can control the movement of the base plate 25.

[0039] The fixed plate 261 has a first state and a second state. The fixed plate 261 and the adjusting plate 262 are equipped with adjusting screws 264 and fixing screws 263. When adjusting the tension of the two belts, the adjusting structure 26 is in the first state. The fixing screws 263 are loosened, and the adjusting screws 264 are turned to drive the fixed plate 261 to move relative to the adjusting plate 262, causing the drive motor 231 and the first driving pulley 232 to move synchronously, changing the center distance between the driving pulley 232 and the driven pulley 224. Since the drive motor 231 drives both belts synchronously, during the adjustment process, the belt with the smaller adjustment range will reach the preset tension state first. Subsequently, the tension of the other belt is finely adjusted by the adjusting wheel 24. After the tension of both belts is adjusted to the preset range, the adjusting structure 26 switches to the second state, and the fixing screws 263 are tightened to lock the fixed plate 261 and the adjusting plate 262 together, maintaining a stable tension state for both belts. The adjusting wheel 24 can move up and down, and after adjustment, it is locked in place by a nut and a locking screw. In some specific embodiments, the adjustment range of the second belt 234 is slightly smaller than that of the first belt 233. Therefore, in actual operation, the drive motor 231 first adjusts the second belt 234 to the preset tension state, and then the adjusting wheel 24 makes a fine adjustment to the first belt 233.

[0040] In addition to using a combination of fixing screw 263 and adjusting screw 264, the adjusting structure 26 can also be configured with a sliding groove locking assembly, a lead screw adjusting assembly, or a combination of a slider and a tightening bolt. It should be understood that any structure capable of driving the fixed plate to translate relative to the adjusting plate and achieving position locking is applicable; this disclosure does not limit the specific form of the adjusting structure.

[0041] It is understood that belt tension adjustment is not limited to the above-mentioned combination of motor translation adjustment structure and adjustment wheel, and other conventional tensioning components can also be used to achieve belt tension adjustment. This disclosure does not impose any restrictions.

[0042] A combined belt tension adjustment scheme is formed by setting up the adjustment structure 26 and the adjustment wheel 24. The adjustment structure 26 relies on the overall translation of the drive motor 231 to uniformly control the basic tension of the first belt 233 and the second belt 234; the belt with a smaller adjustment range will reach the target tension first, and then the tension of the other belt can be finely adjusted independently using the adjustment wheel 24 on the support plate. Belt tension matching can be quickly completed during assembly and debugging. After long-term operation of the equipment, it can compensate for the loosening problem caused by belt aging and stretching, reduce the risk of belt slippage and tooth skipping, avoid angular deviations caused by synchronous flipping of multiple stations, ensure the posture control accuracy of the printing platform 221, stabilize the printing distance between the printed workpiece and the printing head 30, improve the overall color uniformity of the curved surface, and reduce the defect rate.

[0043] Figure 5This is a schematic diagram of the printing process provided according to an exemplary embodiment of this disclosure. (Reference) Figure 5 The workpiece is placed on the printing platform 221. For example, there are six printing platforms 221, numbered 1 to 6 sequentially from the side of the drive motor 231. The outer gear assembly 222 of printing platform 221 numbered 1 consists of a driven wheel 224 and a guide wheel 223, arranged sequentially from the support structure 21 outwards. The outer gear assembly 222 of printing platform 221 numbered 2 consists of a guide wheel 223 and a driven wheel 224, and the remaining printing platforms 221 are arranged alternately in this manner. When the drive motor 231 is working, the first belt 233 meshes with the first driven wheel 2241, causing printing platforms 221 numbered 1, 3, and 5 to rotate; the second belt 234 meshes with the second driven wheel 2242, causing printing platforms 221 numbered 2, 4, and 6 to rotate. The two sets of belts are staggered and do not interfere with each other during operation.

[0044] In some embodiments of this disclosure, the printed workpiece is an arc-shaped workpiece, which can be exemplarily a nail art piece. The method of obtaining the nail art piece blank is not limited. For example, the flipping device 20 can be assembled with a 3D printer, the 3D printer can first form the nail art piece blank, and then the flipping device 20 can be used to color the surface of the blank; alternatively, pre-formed finished nail art pieces can be directly used for coloring.

[0045] Figure 6 This is a flowchart of a printing method provided according to an exemplary embodiment of this disclosure. Figure 6 As shown, the printing method includes the following steps: S1: Control the flipping device to place multiple printing platforms in the initial position, and load multiple printed workpieces onto the multiple printing platforms accordingly; S2: Divide the surface of the printed workpiece into multiple printing areas according to the curved contour of the workpiece; S3: Control the flipping device to drive multiple printing platforms to flip synchronously at a preset angle, so that the target printing area of ​​multiple printed workpieces is facing the printing head, and perform printing and coloring; Figure 7 This is a schematic diagram of the printing method provided according to an exemplary embodiment of this disclosure. (Reference) Figure 6 and Figure 7In some embodiments of this disclosure, the surface of the printed workpiece is divided into three printing areas, P1, P2, and P3. The initial orientation of the multiple printing platforms is set to a horizontal state, i.e., the printing platforms do not rotate. At this time, area P2 faces the printing head, and the printing head prints color onto area P2 of the multiple printed workpieces. After printing, the rotating device is controlled to synchronously rotate the multiple printing platforms to the left by a certain angle, so that area P3 of the multiple printed workpieces faces the printing head, and the printing head prints color onto area P3 of the multiple printed workpieces. After printing, the rotating device is controlled to synchronously rotate the multiple printing platforms to the right by a certain angle, so that area P1 of the multiple printed workpieces faces the printing head, and the printing head prints color onto area P1 of the multiple printed workpieces. After all three areas are printed, the printing operation for this batch of printed workpieces is completed.

[0046] In some embodiments of this disclosure, when the control flipping device drives multiple printing platforms to simultaneously flip by a preset angle, the printing carriage is controlled to rise and fall to maintain the distance between the target printing area and the printing carriage within a preset printing distance range. The printing carriage is also controlled to move horizontally so that its projection covers multiple printing platforms. It is understood that when the printing platforms are flipped to rotate the next target printing area to a position directly facing the printing carriage, the orientation of the printed workpiece changes, causing a shift in the distance between the workpiece surface and the printing carriage. At this time, it is necessary to control the printing carriage to rise and fall along the Z-axis to compensate for this, ensuring that the preset printing distance is always maintained between the area to be printed and the printing carriage. Simultaneously, the printing carriage is controlled to move horizontally so that its printing projection completely covers the printed workpiece on the printing platform, thereby completing the coloring operation for the current area to be printed.

[0047] By using the Z-axis lifting and lowering compensation of the printing head to eliminate distance deviations caused by workpiece flipping, the printing spacing is kept stable, avoiding uneven coating thickness caused by distance fluctuations. Combined with the horizontal scanning motion of the printing head, the curved contour of the workpiece is fully covered, reducing missed printing and ensuring the overall coloring quality of curved workpieces.

[0048] This disclosure also provides a method for manufacturing a nail printer, used to complete the overall assembly and preparation of the aforementioned nail printer, such as... Figure 8 As shown, the specific assembly steps are as follows: S10: Multiple printing platforms are rotatably mounted on the support structure via a flip-connection structure. The flip-connection structure includes multiple printing platforms, multiple sets of connectors, and multiple sets of gear assemblies. The gear assemblies include coaxially adjacent guide wheels and driven wheels. The guide wheels and driven wheels of adjacent gear assemblies are installed in opposite directions along the axial direction. S20: The drive structure for the assembly and flipping connection structure transmission connection includes a drive motor, a drive wheel, a first belt and a second belt, such that the first belt closes around the driven wheel on the side close to the support structure, and the second belt closes around the driven wheel on the side away from the support structure. S30: The support structure, flip connection structure and drive structure are fixedly installed on the printer body.

[0049] First, multiple printing platforms are rotatably assembled onto the support structure via a flip-connection structure. The flip-connection structure includes multiple printing platforms, multiple sets of connectors, and multiple sets of gear assemblies. Each set of gear assemblies includes a guide wheel and a driven wheel arranged coaxially adjacent to each other. During the assembly process, adjacent gear assemblies are installed in a staggered manner so that the guide wheels and driven wheels of adjacent gear assemblies are installed in opposite directions along the axial direction, forming a gear assembly with alternating positive and negative arrangements.

[0050] After the flip-connecting structure is assembled, the drive structure, which forms a transmission connection with the flip-connecting structure, is assembled. The drive structure includes a drive motor, a drive pulley, a first belt, and a second belt. Subsequently, the assembled support structure, flip-connecting structure, and drive structure are fixedly installed on the printer body, completing the overall alignment and assembly of the machine.

[0051] In the transmission assembly process, the first belt is closed and wrapped around the outside of each driven pulley on the side closest to the support structure, while the second belt is closed and wrapped around the outside of each driven pulley on the side furthest from the support structure, forming a double-layer independent belt transmission circuit. After the equipment is assembled, the drive motor synchronously drives the first and second belts through the drive pulley. The two belts drive the driven pulleys on the corresponding sides to rotate synchronously, and then, through multiple sets of connecting parts, all printing platforms are linked to rotate synchronously as a whole, realizing synchronous posture adjustment of multiple workstations and ensuring the consistency and stability of batch printing operations.

[0052] Various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0053] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A nail art printer (10), comprising a nail art printer body and a flipping device (20) disposed on the printer body, characterized in that, The flipping device (20) includes: Support structure (21); The flip-connecting structure (22) includes multiple sets of rotatable connectors (220) and multiple printing platforms (221) fixedly connected to the multiple sets of connectors (220). The multiple printing platforms (221) are rotatably mounted on the support structure (21) via the multiple sets of connectors (220). Each connector (220) has a gear assembly (222) extending outward along the axial direction of the printing platform (221). The gear assembly (222) includes coaxially adjacent guide wheels (223) and driven wheels (224). The guide wheels (223) and driven wheels (224) of adjacent gear assemblies (222) are mounted in opposite axial directions. The side closer to the support structure (21) is the first driven wheel (2241), and the other side is the second driven wheel (2242). The drive structure (23) includes a drive motor (231), a drive wheel (232), a first belt (233), and a second belt (234). The first belt (233) is closed around the first driven wheel (2241), and the second belt (234) is closed around the second driven wheel (2242). The drive motor (231) drives the first belt (233) and the second belt (234) to rotate via the drive wheel (232), thereby driving the gear assembly (222), the multiple sets of connectors (220), and the multiple printing platforms (221) to rotate synchronously.

2. The nail printer according to claim 1, characterized in that, The drive wheel (232) includes a first drive wheel (235) and a second drive wheel (236): The first belt (233) closes around the first driving pulley (235) and the first driven pulley (2241), and the second belt (234) closes around the second driving pulley (236) and the second driven pulley (2242).

3. The nail printer according to claim 2, characterized in that, The support structure (21) includes two support plates arranged opposite to each other.

4. The nail printer according to claim 2, characterized in that, The connector (220) includes: The connecting seat (2202) includes a rotating shaft connector (2203) and a bracket (2204), wherein the bracket (2204) is sleeved on one end of the rotating shaft connector (2203) and fixed to the printing platform (221); The bearing (2201) is sleeved on the outer wall of the rotating shaft connector (2203) and fixedly embedded inside the support plate.

5. The nail printer according to claim 1, characterized in that, The drive wheel (232) is fixedly mounted on the power output shaft of the drive motor (231).

6. The nail printer according to claim 5, characterized in that, The nail printer is also provided with an adjustment structure (26) for adjusting the belt tension, the adjustment structure including: Adjustment plate (262); and A fixed plate (261) is movably mounted on the drive motor (231) and fitted with the drive wheel (232). The fixing plate (261) has a first state and a second state. In the first state, the fixing plate (261) can be translated relative to the adjusting plate (262) to change the center distance between the drive wheel (232) and the gear assembly (222). In the second state, the fixing plate (261) and the adjusting plate (262) are locked relative to each other to maintain the tension of the second belt (234).

7. The nail printer according to claim 6, characterized in that, An adjusting wheel (24) is also fixedly installed on the support plate, and the first belt (233) surrounds the adjusting wheel (24) to adjust the tension of the first belt (233).

8. The nail printer according to any one of claims 1-7, characterized in that, The printed workpiece is placed on the printing platform, and the printed workpiece is an arc-shaped workpiece.

9. The nail printer according to claim 3, characterized in that, The support structure (21) also includes: The base plate (25) is located on the side of the support plate away from the printing platform (221) and is used to fix the flipping device (20) to the nail printer body.

10. The nail printer according to claim 8, characterized in that, The nail printer body includes a printing head (30), and the flipping device (20) is located directly below the printing head (30).

11. A printing method for a nail art printer, the nail art printer comprising a flipping device with multiple printing platforms, characterized in that, The printing method is applied to the nail printer and includes: The flipping device is controlled to position the multiple printing platforms in an initial position, and the multiple printed workpieces are correspondingly mounted on the multiple printing platforms; Based on the curved contour of the printed workpiece, the surface of the printed workpiece is divided into multiple printing areas; The flipping device is controlled to drive the multiple printing platforms to flip synchronously at a preset angle, so that the target printing area of ​​the multiple printed workpieces is facing the printing head, and printing and coloring are performed. The target printing area is the area in the plurality of printing areas where the current printing coloring is performed.

12. The method according to claim 11, characterized in that, The method further includes: While controlling the flipping device to drive the multiple printing platforms to flip synchronously at a preset angle, the printing head is raised and lowered to keep the distance between the target printing area and the printing head within a preset printing distance range.

13. The method according to claim 12, characterized in that, The method further includes: The printing carriage is controlled to move horizontally so that its projection covers the multiple printing platforms.

14. A method for manufacturing a nail printer, characterized in that, The method includes: Multiple printing platforms are rotatably mounted on a support structure via a flip-connection structure. The flip-connection structure includes multiple printing platforms, multiple sets of connectors, and multiple sets of gear assemblies. Each gear assembly includes a coaxially adjacent guide wheel and a driven wheel. The guide wheels and driven wheels of adjacent gear assemblies are installed in opposite directions along the axial direction. A drive structure is assembled and transmitted to the flip connection structure. The drive structure includes a drive motor, a drive wheel, a first belt, and a second belt, such that the first belt closes around the driven wheel on the side closer to the support structure, and the second belt closes around the driven wheel on the side away from the support structure. The support structure, the flip connection structure, and the drive structure are fixedly installed on the printer body; The drive structure synchronously drives the multiple printing platforms to rotate as a whole via the first belt and the second belt.

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