A spiral UV printing and powdering all-in-one machine

Abstract

The application provides a spiral UV printing and powder scattering all-in-one machine, and belongs to the technical field of UV printing and powder scattering equipment. The machine comprises a main machine table, which is sequentially provided with a loading space, a first processing position and a second processing position along the Y-axis feeding direction. The machine further comprises an inkjet glue spraying module, a printing substrate feeding module and a powder spraying module. The inkjet glue spraying module and the powder spraying module are respectively fixed on the first processing position and the second processing position, and the printing substrate feeding module is used to sequentially transfer the product from the loading space to the two processing positions. The problems of low processing efficiency and large positioning deviation caused by the multiple transfers and clamping of the white ink printing, glue spraying and powder scattering processes of the cylindrical curved surface product in the prior art are solved. The white ink printing, glue spraying and powder scattering processes are continuously completed on one machine, manual intervention is not required, the integrated automatic printing process flow is realized, and the product printing efficiency is improved.

Description

Technical Field

[0001] This application provides a spiral UV printing powder dispensing machine, belonging to the technical field of UV printing powder dispensing equipment. Background Technology

[0002] UV cylindrical printing equipment is increasingly being used in industries such as cultural and creative products, trendy toys and figurines, and cosmetic packaging materials. By applying UV printing to the surface of cylindrical products and combining it with powder coating, various special visual effects such as glitter, 3D frosted finish, and fluorescent texture can be obtained, significantly increasing the added value of the products.

[0003] However, most existing UV cylindrical printers only have a single inkjet printing function. For example, patent document CN214492113U discloses a UV cylindrical printer that uses a cylindrical rotation device to rotate the product to complete the printing. This device can only complete the printing process and does not have the ability to apply powder.

[0004] To achieve a powder-spraying effect on cylindrical products, the industry currently typically requires removing the product from the UV cylindrical printer and transferring it to a separate powder-spraying device or relying on manual powder spraying for subsequent processing. This multi-device, multi-clamping approach not only increases waiting time between processes and the frequency of manual intervention, but also easily causes positioning deviations when the product is repeatedly clamped during transfer between different devices, affecting the alignment accuracy between the powder-spraying area and the printed pattern. Although some patents have disclosed equipment solutions that integrate printing and powder spraying, such as the patent document with authorization announcement number CN223999198U which discloses a new type of integrated printing, powder spraying, and color fixing machine, it is aimed at processing flat roll materials such as release films; the patent document with publication number CN120327112A discloses a multi-functional digital printing machine with its powder spraying mechanism located inside the printing carriage, which is also suitable for digital printing of flat products.

[0005] In the aforementioned planar all-in-one printer solutions, both the print head and the powder spraying mechanism need to move horizontally to cover the product surface, while the substrate remains stationary. If this solution were directly applied to a cylindrical curved surface processing scenario, it would require separate, non-interfering horizontal movement drive systems for the print head and powder spraying mechanism, resulting in complex equipment structure, high manufacturing costs, and difficulties in Y-axis serial layout. Furthermore, long-term wear of the transmission components in the horizontal movement mechanism would lead to cumulative positioning errors, affecting the inkjet and powder application accuracy on the curved surface. None of these solutions are suitable for processing cylindrical curved surface products. Curved surface products also face unique challenges during powder application, such as uniform powder distribution on the curved surface and cleaning residual powder in non-coated areas. Currently, there is no mature integrated solution for these issues. Summary of the Invention

[0006] In view of the deficiencies of the existing technology, this application provides a spiral UV printing powder dispensing machine, which can effectively solve the related technical problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] This application discloses a spiral UV printer powder dispensing machine, including a main unit, on which a material loading space, a first processing position, and a second processing position are sequentially arranged along the Y-axis feed direction;

[0009] Also includes:

[0010] An inkjet adhesive spraying module is fixedly mounted on the first processing position of the main unit in the Y-axis direction, and the inkjet adhesive spraying module has a degree of freedom in the Z-axis direction for spraying UV ink and UV-curable adhesive onto the outer peripheral surface of the substrate.

[0011] The substrate feeding module is set on the main unit and extends to cover the loading space, the first processing position and the second processing position. It is used to carry and drive the substrate to rotate around its own axis and simultaneously translate along the Y-axis direction. The rotation and the translation are coupled to form a spiral motion trajectory.

[0012] A powder spraying module is fixedly disposed on the second processing position in the Y-axis direction. The powder spraying module has a degree of freedom in the Z-axis direction for spraying powder onto the outer peripheral surface of the substrate product in a rotating state.

[0013] The powder spraying module includes a quantitative powder feeding mechanism and a residual powder cleaning mechanism; the quantitative powder feeding mechanism is used to quantitatively supply powder to the outer peripheral surface of the printing substrate; the residual powder cleaning mechanism is movably disposed at the bottom of the powder spraying module and is used to contact and sweep away the residual powder that is not adhered to the outer peripheral surface of the printing substrate after powdering.

[0014] The substrate feeding module continuously and sequentially transfers the substrate from the loading empty position along the Y-axis to the processing station of the inkjet adhesive module and the processing station of the powder spraying module without intermediate clamping or transfer; the inkjet adhesive module sequentially sprays UV ink and UV curing adhesive onto the target area on the outer periphery of the substrate along the spiral motion trajectory, and the powder spraying module sprinkles powder onto the outer periphery of the substrate, with the powder adhering to the area covered by the adhesive.

[0015] In summary, the technical solution provided in this application has at least one of the following advantages compared with the prior art:

[0016] This spiral UV printer and powder coating all-in-one machine solves the problem of low processing efficiency and large positioning deviation in existing technologies for white ink printing, adhesive spraying, and powder coating of cylindrical curved surface products. It is achieved by setting a loading space, a first processing position, and a second processing position along the Y-axis on the main unit, and fixing the inkjet and adhesive spraying modules and the powder spraying module respectively at the first and second processing positions. The product is then transferred from the loading space to the two processing positions in sequence with the substrate feeding module.

[0017] In this application, the substrate rotates around its own axis while simultaneously translating and feeding along the Y-axis, with rotation and translation coupling to form a helical motion trajectory. This motion method allows the inkjet and powder spraying modules to cover the entire outer circumference of the cylindrical product with white ink, glue, and powder even when their respective stations are fixed, eliminating any blind spots in the coating process. Compared to existing technologies that require multi-axis linkage of the printhead to cover curved surfaces, the motion mechanism of this application is simpler, easier to control, and correspondingly reduces the manufacturing cost and debugging difficulty of the equipment.

[0018] The powder coating head remains fixed horizontally, while only the product being printed moves and rotates along the Y-axis. This "product movement, module fixation" method eliminates the need for the horizontal movement drive mechanism of the powder coating module and its associated cable chains, cable protection, and other auxiliary devices. With the simplified powder coating module structure, the positional accuracy of the powder application nozzle is not affected by the cumulative error of the horizontal movement mechanism, resulting in higher repeatability of the powder application point and improved clarity of the powder pattern boundaries and batch consistency.

[0019] This application adds a negative pressure adsorption structure with an adaptive spacing adjustment mechanism to the fixture device. Two sets of negative pressure adsorption structures are located on opposite sides of the product's outer circumference, automatically adjusting the distance between the adsorption port and the product surface according to the product diameter. Effective ink mist adsorption is achieved for products of different diameters, solving the problem of excessively large adsorption gaps on large-diameter products and potential surface contact on small-diameter products caused by fixed adsorption structures. This structure improves the equipment's adaptability to different product specifications and reduces the frequency of manual adjustments.

[0020] The cleaning of residual powder after powder application employs a dual mechanism combining mechanical brushing with negative pressure adsorption. The brushes sweep away surface powder as the product rotates, promoting uniform powder distribution. Simultaneously, the negative pressure system draws in suspended dust, and the combined effect of these two mechanisms ensures thorough removal of residual powder from non-adhesive areas, resulting in clearer boundaries for the powder application area.

[0021] The integrated dual-chamber, twin-valve body in the inkjet adhesive module enables independent supply and rapid switching of ink and adhesive at the printhead tip. Both media share the same printhead carriage, but their piping systems do not intersect, avoiding the risk of printhead clogging caused by ink and adhesive mixing within the piping. This structure makes the device more compact, eliminating the layout difficulties associated with two separate carriages, and also reserving expansion interfaces for future integration of color inks and varnish functions. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of this application;

[0023] Figure 2 This is a partial three-dimensional structural diagram of the relevant components in the inkjet adhesive module of this application;

[0024] Figure 3 This is another partial three-dimensional structural view of the relevant components in the inkjet adhesive module of this application;

[0025] Figure 4 This is a partial three-dimensional structural diagram of the relevant components at the first Z-axis lifting assembly in this application;

[0026] Figure 5 This is a partial three-dimensional structural view of the relevant components in the substrate feeding module of this application;

[0027] Figure 6 This is a partial exploded three-dimensional structural view of the relevant components at the substrate feeding module in this application;

[0028] Figure 7 This is a partial three-dimensional structural diagram of the relevant components at the linear motor mover in this application;

[0029] Figure 8 This is a partial side view of the relevant components of the lifting and feeding assembly in this application;

[0030] Figure 9 This is a partial three-dimensional structural diagram of the relevant components of the lifting and feeding assembly in this application;

[0031] Figure 10 This is a partial three-dimensional structural diagram of the relevant components in the powder spraying module of this application;

[0032] Figure 11 This is a partial three-dimensional structural diagram of the relevant components at the bottom of the discharge rope in this application;

[0033] Figure 12 This is a partial three-dimensional structural diagram of the relevant components at the bottom of the powder coating vehicle front in this application.

[0034] The labels in the diagram represent:

[0035] 1. Main unit; 11. Loading space;

[0036] 2. Inkjet adhesive spraying module; 21. Printhead carriage; 22. Printhead board; 23. Dual-chamber twin valve body; 24. Printhead; 25. Anti-collision device;

[0037] 26. First Z-axis lifting assembly; 261. Limiting plate; 262. Twin limiting sliders; 263. Limiting slide rail; 264. Drive motor; 265. Lead screw; 266. Lead screw nut block;

[0038] 3. Printing substrate feeding module;

[0039] 31. Linear feed assembly; 311. Fixture moving plate; 312. Limit block; 313. Limit rail; 314. Magnetic grating reader; 315. Linear motor stator; 316. Linear motor mover;

[0040] 32. Fixture device; 321. Negative pressure adsorption structure; 322. Adaptive distance adjustment structure;

[0041] 33. Lifting and feeding assembly;

[0042] 331. Load-bearing adjustment structure; 3311. Adjustment rail; 3312. Adjustment slider; 3313. Load-bearing frame;

[0043] 332. Lifting structure; 3321. Lifting drive component; 3322. Twin shafts; 3323. Support block;

[0044] 4. Powder spraying module; 41. Powder spraying head; 4101. Powder drop port; 42. Second Z-axis lifting assembly; 43. Powder spraying motor; 44. Powder storage box; 45. Powder roller; 46. Transmission structure; 47. Electric discharge rope; 48. Miniature cylinder; 49. Plate brush; 410. Powder outlet accordion cover. Detailed Implementation

[0045] The present application will be further described below with reference to embodiments.

[0046] As a first embodiment of this application:

[0047] Reference Appendix Figures 1 to 12As shown, a spiral UV printer powder-dispensing integrated machine includes a main unit 1, which serves as the basic load-bearing component of the entire machine. The main unit 1 adopts a rigid frame structure, and its surface is divided along the Y-axis into a loading space 11, a first processing station, and a second processing station. The loading space 11 is located on one side of the Y-axis and is used for loading and unloading products for the operator. The first processing station is located downstream of the loading space 11 along the Y-axis, and the second processing station is located downstream of the first processing station. The three stations are arranged sequentially along the Y-axis. During processing, the products are sequentially transferred from the loading space 11 to the first and second processing stations by the substrate feeding module 3.

[0048] The substrate feeding module 3 is initially positioned at the loading slot 11, extending along the Y-axis and covering the loading slot 11, the first processing station, and the second processing station. During loading, the operator places the substrate on the lifting feeding assembly 33, which lifts the substrate upward to the clamping position of the fixture device 32. The fixture device 32 clamps both ends of the substrate and drives it to rotate around its own axis. Simultaneously, the linear feed assembly 31 drives the fixture device 32 to translate along the Y-axis. The coupling of rotation and translation forms a helical motion trajectory. This motion allows the substrate to continuously rotate while moving along the Y-axis, enabling the inkjet and adhesive spraying module 2 and the powder spraying module 4 to cover the entire outer circumference of the substrate without any dead corners or uncovered areas.

[0049] The linear feed assembly 31 uses a linear motor as its drive source. The linear motor stator 315 is fixedly mounted on the main unit 1 along the Y-axis, and the linear motor mover 316 is fixedly connected to the fixture moving plate 311. Upon power-up, an electromagnetic thrust is generated between the linear motor mover 316 and the linear motor stator 315, driving the fixture moving plate 311 to reciprocate linearly along the limiting rail 313. The limiting rail 313 is fixedly mounted on the main unit 1, extending in the same direction as the Y-axis. The fixture moving plate 311 slides along the limiting rail 313 via a slider. A limiting block 312 is slidably mounted on the limiting rail 313, with its top fixed to the bottom of the fixture moving plate 311. The limiting block 312 slides along the limiting rail 313 with the fixture moving plate 311 and is mechanically stopped at the end of its stroke to prevent the fixture moving plate 311 from dislodging from the limiting rail 313. A magnetic grating reader 314 is fixed to one side of the bottom of the fixture moving plate 311. A magnetic grating ruler is laid along the side of the limiting rail 313. As the fixture moving plate 311 moves, the magnetic grating reader 314 reads the position information on the magnetic grating ruler, thereby detecting the precise position of the fixture moving plate 311 in real time. The position signal detected by the magnetic grating reader 314 is fed back to the equipment's control system. The control system then performs closed-loop adjustment of the linear motor's output to ensure that the fixture moving plate 311 stops precisely between each processing station.

[0050] Specifically, when the printed product moves to the first processing position, the inkjet adhesive spraying module 2 starts working. The inkjet adhesive spraying module 2 includes a printhead carriage 21, a printhead board 22, a dual-chamber twin-valve body 23, a printhead 24, an anti-collision device 25, and a first Z-axis lifting assembly 26. The printhead board 22, the dual-chamber twin-valve body 23, and the printhead 24 are all mounted on the printhead carriage 21.

[0051] The printhead 24 integrates an inkjet nozzle and an adhesive nozzle. The inkjet nozzle is connected to an external UV ink supply system via piping, and the adhesive nozzle is connected to an external adhesive supply system via piping. The dual-chamber twin-valve body 23 has two independent fluid chambers, each connected to the supply piping of the inkjet nozzle and adhesive nozzle, respectively. The switching action of the valve core inside the valve body independently controls the flow and interruption of ink and adhesive. During inkjet printing, the dual-chamber twin-valve body 23 opens the ink chamber and closes the adhesive chamber, allowing ink to be sprayed onto the surface of the substrate through the inkjet nozzle. During adhesive printing, the dual-chamber twin-valve body 23 opens the adhesive chamber and closes the ink chamber, allowing adhesive to be sprayed onto the surface of the substrate through the adhesive nozzle. The two chambers are independently controlled and do not interfere with each other, preventing cross-mixing of ink and adhesive within the piping. Based on preset printing pattern data, the equipment controls the inkjet and adhesive spraying module 2 to sequentially spray UV ink and UV-curable adhesive onto the target area on the outer periphery of the substrate. The inkjet adhesive module 2 scans and sprays ink point by point along the circumferential and axial directions of the outer surface of the substrate. In conjunction with the rotation and axial translation of the substrate itself, it precisely coats the target area with UV ink and UV-curable adhesive.

[0052] An anti-collision device 25 is located at the bottom of one side of the printhead carriage 21, next to the printhead 24. The anti-collision device 25 can employ a photoelectric sensor or a contact sensor to detect the distance between the printhead 24 and the outer peripheral surface of the substrate. When the detected distance is less than a preset safety value, the anti-collision device 25 sends a signal to the control system, which then controls the first Z-axis lifting assembly 26 to drive the printhead carriage 21 upwards to avoid a physical collision between the printhead 24 and the substrate. During inkjet printing, some suspended ink mist is generated that does not adhere to the surface of the substrate. If this ink mist diffuses in the workspace, it may contaminate internal equipment components or adhere to non-processed areas of the product. The fixture device 32 is equipped with two sets of negative pressure adsorption structures 321, located on both sides of the outer peripheral surface where the fixture device 32 holds the substrate. The two sets of negative pressure adsorption structures 321 are symmetrically arranged on both sides of the substrate, with their adsorption ports facing the outer peripheral surface of the substrate. The negative pressure adsorption structure 321 uses an external negative pressure system connected to the pipeline to continuously generate negative pressure suction during the inkjet process, which promptly removes suspended ink mist from the work area and prevents ink mist from spreading and contaminating equipment and products.

[0053] After inkjet printing is complete, a white ink pattern is formed on the surface of the substrate. The substrate continues to rotate with the fixture device 32. When it rotates to the UV lamp irradiation station on the fixture device 32, the UV lamp emits ultraviolet light to irradiate the ink pattern, causing the ink to cure quickly and form a stable white background or target pattern. In this embodiment, an LED-UV lamp can be used, which has low heat generation and rapid start-up, making it suitable for use with inkjet printing. The specific structure and installation method of the UV lamp can be referred to the prior art, and will not be described in detail in this embodiment.

[0054] After the white ink cures, the inkjet adhesive module 2 continues to spray adhesive onto the corresponding areas of the white ink pattern. The adhesive layer covers the white ink pattern or the target areas where powder needs to be adhered. The printed product is then transferred by the linear feed assembly 31 to the second processing station, entering the working area of ​​the powder spraying module 4.

[0055] The powder spraying module 4 includes a powder spraying head 41, a second Z-axis lifting assembly 42, a powder spraying motor 43, a powder storage box 44, a powder-attaching roller 45, a transmission structure 46, a discharge rope 47, a miniature cylinder 48, a plate-type brush 49, and a powder outlet accordion cover 410. The powder spraying head 41 is positioned above the second processing station, and the powder storage box 44 is fixed to the top of the powder spraying head 41 for storing powder materials. The powder storage box 44 has a powder outlet at its bottom, which corresponds vertically to the powder drop outlet 4101 at the bottom of the powder spraying head 41. The powder-attaching roller 45 is rotatably disposed inside the powder storage box 44, and its position is close to the powder outlet of the powder storage box 44. The outer circumferential surface of the powder roller 45 contacts the powder in the powder storage box 44. The powder spraying motor 43 drives the powder roller 45 to rotate through the transmission structure 46. When the powder roller 45 rotates, it carries the powder out of the powder storage box 44 and spreads it to the outer circumferential surface of the rotating substrate below through the powder outlet and the powder drop outlet 4101.

[0056] In this embodiment, the transmission structure 46 is preferably a double-gear meshing transmission structure. Specifically, a driving gear is mounted on the output shaft of the powder spraying motor 43, and a driven gear is mounted at the end of the powder-coating roller 45. The driving gear and driven gear mesh with each other, and the powder spraying motor 43 drives the powder-coating roller 45 to rotate synchronously through gear meshing. The rotational speed of the powder-coating roller 45 determines the amount of powder output; the higher the rotational speed, the more powder is carried out per unit time. By controlling the rotational speed of the powder spraying motor 43, the amount of powder applied can be adjusted to meet the processing requirements of different products.

[0057] During powder application, static electricity is generated in the powder due to friction and airflow. Static powder easily adheres to non-target areas, affecting application accuracy and pattern boundary clarity. An electric discharge rope 47 is mounted on the powder spraying head 41 and located near the powder inlet 4101. One end of the electric discharge rope 47 is connected to the equipment's ground wire or static grounding terminal, while the other end is exposed in the powder channel near the powder inlet 4101. When charged powder passes near the electric discharge rope 47, the static charge is conducted through the rope to the ground wire and released, thereby eliminating or reducing the static electricity on the powder, allowing it to fall more accurately to the target area and reducing powder scattering. The electric discharge rope 47 can be made of conductive fiber braided rope or metal wire rope, possessing both conductivity and flexibility.

[0058] The powder sprinkled onto the outer surface of the substrate adheres partly to the glue-covered areas and falls into the non-glue areas, forming loose powder. A plate brush 49 is located at the bottom of the powder spraying head 41 and extends along the axial direction of the substrate. The output end of a micro-cylinder 48 is connected to the plate brush 49. When the micro-cylinder 48 extends, it drives the plate brush 49 to move towards the outer surface of the substrate, allowing the bristles to make flexible contact with the surface. As the substrate rotates continuously, the bristles sweep across the surface, removing loose powder from non-glue areas and promoting a more even distribution of powder in glue-covered areas. Part of the removed powder is collected by the powder outlet accordion cover 410, while the remainder falls below, where a corresponding collection structure can be installed for real-time collection. The powder outlet accordion cover 410 is located at the powder outlet 4101 and is a retractable accordion-style protective cover structure, normally closing the powder outlet 4101. During powder application, the powder outlet accordion cover 410 is opened to expose the powder drop outlet 4101; after powder application stops, the powder outlet accordion cover 410 is closed to seal the powder drop outlet 4101, preventing powder leakage from the powder storage box 44 during non-working periods.

[0059] After the printed product completes powder application and residual powder cleaning at the second processing station, the finished product is moved back to the loading empty position 11 along the Y-axis by the substrate feeding module 3, or can be directly removed by the operator at the second processing station. The operator places the new product to be processed on the lifting feeding assembly 33, and the next cycle of processing can begin. The entire machine continuously completes the entire process of white ink printing, UV curing, glue spraying, and powder application on a single main unit 1, without manual intervention or the need to transfer the printed product between different devices.

[0060] Furthermore, other spraying functions, such as color printing and varnish spraying, can be integrated into the printhead 21 of the inkjet adhesive module 2 to further enhance the integrity of the entire process of the all-in-one machine.

[0061] For comparison: Compared with the existing technology where the printing head moves along the Y-axis while the substrate remains stationary, this application uses a motion method where the inkjet adhesive module 2 and the powder spraying module 4 are fixed in the horizontal direction, and only the substrate translates and rotates along the Y-axis. This has the following significant advantages:

[0062] First, motion accuracy is easier to maintain. In existing solutions, the Y-axis movement of the printing carriage relies on lead screws or linear motors in conjunction with auxiliary devices such as drag chains and cables. After long-term operation, wear of transmission components leads to a decrease in positioning accuracy. However, in this application, neither the inkjet glue spraying module 2 nor the powder spraying module 4 has a horizontal movement mechanism. The height adjustment in the Z-axis direction is achieved only through the first Z-axis lifting component 26 and the second Z-axis lifting component 42. There is no cumulative error in horizontal movement, and the repeatability of the powder drop position of the powder drop port 4101 and the ink spraying position of the printhead 24 is higher. Second, the structure is more compact and reliable. The horizontal movement drive system of the two carriages and their supporting drag chains and cable protection devices are eliminated, reducing equipment manufacturing costs and failure rates. Third, an integrated process flow is realized. The substrate feeding module 3 continuously and sequentially moves the substrate from the loading empty position 11 along the Y-axis direction without clamping to the first processing position and the second processing position, without manual intervention, truly realizing full-process automation of printing, glue spraying, and powder application.

[0063] As a second embodiment of this application:

[0064] Reference Appendix Figures 1 to 5 As shown, in the aforementioned spiral UV printer powder-spraying integrated machine, the inkjet and adhesive spraying module 2 is vertically and flexibly mounted above the main unit 1 via a first Z-axis lifting assembly 26. The function of the first Z-axis lifting assembly 26 is to adjust the height position of the printhead carriage 21 in the Z-axis direction to accommodate substrates of different diameters. When the diameter of the substrate changes, the optimal spraying distance between the printhead 24 and the outer circumference of the product also changes. By adjusting the Z-axis position of the printhead carriage 21 through the first Z-axis lifting assembly 26, the distance between the printhead 24 and the outer circumference of the product can be maintained within the optimal spraying distance range, ensuring the spraying accuracy of ink and adhesive.

[0065] In this embodiment, the first Z-axis lifting assembly 26 adopts the specific structure of a lead screw motor lifting module. A limiting plate 261 is vertically fixed to the main unit 1, serving as the reference for Z-axis lifting. A limiting slide rail 263 is fixedly installed on the back side of the nozzle carriage 21, extending along the Z-axis direction. A double-limiting slider 262 slidably engages with the limiting slide rail 263, and is also fixedly connected to the limiting plate 261, meaning the position of the double-limiting slider 262 in the Z-axis direction is fixed. A drive motor 264 is fixedly installed on the nozzle carriage 21, and its output shaft is connected to the lead screw 265, which rotates with the drive motor 264. A threaded nut 266 is threaded onto the lead screw 265, and is fixedly connected to the limiting plate 261. When the drive motor 264 rotates, the lead screw 265 rotates with the motor. Since the lead screw nut 266 is fixed on the limiting plate 261 and cannot rotate, the rotational motion of the lead screw 265 is converted into its own lifting motion along the Z-axis, thereby driving the entire printhead 21 to rise and fall relative to the limiting plate 261 along the Z-axis. In this layout, the drive motor 264 and the lead screw 265 move together with the printhead 21, while the lead screw nut 266 and the limiting plate 261 remain fixed. The limiting slide rail 263 cooperates with the twin limiting sliders 262 to provide lifting guidance, ensuring that the printhead 21 remains vertical and does not wobble during the lifting process. The structure of the second Z-axis lifting assembly 42 is the same as that of the first Z-axis lifting assembly 26, and it is used to drive the powder spraying head 41 to move up and down along the Z-axis to adapt to the height position of products with different diameters.

[0066] In other embodiments, the first Z-axis lifting assembly 26 and the second Z-axis lifting assembly 42 can also employ a telescopic cylinder lifting module or an electric telescopic rod lifting module to achieve the lifting function. The telescopic cylinder lifting module drives the nozzle head 21 or powder spraying head 41 to rise and fall through the extension and retraction of the cylinder piston rod, suitable for scenarios with short lifting strokes and high response speed requirements. The electric telescopic rod lifting module achieves the telescopic action through a motor-driven lead screw nut or worm gear mechanism, possessing greater thrust and better self-locking performance, suitable for the heavier-loaded nozzle head 21 or powder spraying head 41. The above-mentioned lifting drive methods can be flexibly selected according to actual working conditions, all achieving the purpose of driving the head to rise and fall along the Z-axis.

[0067] When the printhead 24 performs inkjet and adhesive spraying operations, the switching action of the dual-chamber twin-valve body 23 needs to be synchronized with the spiral motion trajectory of the substrate. The equipment control system calculates the spraying sequence of the inkjet and adhesive spraying module 2 based on the preset printing pattern data and the outer dimensions of the substrate. When the substrate rotates to a specific angle and translates axially to a specific position, the control system sends a control signal to the dual-chamber twin-valve body 23 to open the corresponding chamber for spraying. This timing synchronization control allows UV ink and UV-curable adhesive to be accurately coated onto the predetermined target area on the outer circumference of the substrate, ensuring the accuracy of the pattern and the clarity of the boundaries. Because the substrate continuously rotates and translates axially during the inkjet and adhesive spraying process, the printhead 24 performs a spiral scanning motion relative to the product surface. The printhead 24 remains stationary while the product moves, and the relative motion trajectory between the two is a spiral. This "printhead fixed, product moving" method is different from the existing "printhead moving, product fixed" or "printhead moving, product rotating" methods, and has the advantages of simplified structure and easy control of motion accuracy.

[0068] The anti-collision device 25 can be a capacitive proximity sensor or a photoelectric distance sensor, with its detection direction facing the printed product below the printhead 24. When the distance between the printhead 24 and the outer periphery of the product is detected to be less than a set value, the anti-collision device 25 sends an emergency stop signal to the control system. The control system immediately stops the feeding motion of the substrate feeding module 3 and the rotational motion of the fixture device 32, and simultaneously controls the first Z-axis lifting assembly 26 to drive the printhead carriage 21 to rise to a safe height. The above anti-collision logic can effectively prevent printhead collision accidents caused by product clamping misalignment or incorrect product size input, protecting the printhead 24 from damage.

[0069] As a third embodiment of this application:

[0070] Reference Appendix Figures 3 to 6 In the aforementioned spiral UV printing powder-spreading integrated machine, the substrate feeding module 3 includes a linear feeding component 31 and a fixture device 32. The fixture device 32 is mounted on a fixture moving plate 311 and is used to clamp both ends of the substrate and drive it to rotate around its own axis. The specific structure and clamping / rotating principle of the fixture device 32 can be found in existing technology and will not be repeated here. The improvement of the fixture device 32 in this application lies in the addition of a negative pressure adsorption structure 321 and an adaptive distance adjustment structure 322.

[0071] Two sets of negative pressure adsorption structures 321 are respectively disposed on both sides of the outer peripheral surface of the fixture device 32 where the printing substrate is held. The term "both sides of the outer peripheral surface" refers to the outer space on opposite sides of the clamping position along the circumferential direction of the printing substrate. The adsorption ports of the negative pressure adsorption structures 321 face the outer peripheral surface of the printing substrate, maintaining a certain adsorption gap between them. The size of this adsorption gap directly affects the negative pressure adsorption effect: if the gap is too large, the negative pressure suction force weakens, and ink mist cannot be effectively drawn in; if the gap is too small, it may touch the product surface or interfere with adsorption. Therefore, the adsorption gap needs to be adjusted according to the diameter of the printing substrate.

[0072] The adaptive distance adjustment structure 322 employs a horizontally moving motor-driven lead screw module, with its moving end fixedly connected to the negative pressure adsorption structure 321 via a connector. When the diameter of the substrate increases, the clamping center position of the fixture device 32 may change, or the outer dimensions of the clamping components may change. In this case, the control system drives the motor of the adaptive distance adjustment structure 322 to rotate, and the lead screw drives the moving end and the negative pressure adsorption structure 321 to move horizontally, adjusting the distance between the negative pressure adsorption structure 321 and the outer circumference of the substrate to keep the adsorption gap within an effective range. When the diameter of the substrate decreases, the adaptive distance adjustment structure 322 moves in the opposite direction, bringing the negative pressure adsorption structure 321 closer to the outer circumference of the product, similarly ensuring that the adsorption gap remains within an effective range. The adaptive distance adjustment structure 322 allows the same equipment to adapt to substrates of different diameters without requiring manual adjustment of the position of the negative pressure adsorption structure 321, thus improving the equipment's adaptability to different products.

[0073] In other embodiments, the adaptive spacing adjustment structure 322 can also employ a telescopic cylinder moving module or an electric telescopic rod moving module. The telescopic cylinder moving module uses pneumatic pressure to drive a piston rod to extend or retract, moving the negative pressure adsorption structure 321. It offers fast response and a simple structure, making it suitable for scenarios requiring frequent and rapid adjustments. The electric telescopic rod moving module uses a motor to drive a lead screw or rack and pinion mechanism for extension and retraction. It offers high adjustment accuracy and good self-locking properties, making it suitable for scenarios requiring high precision in the adsorption gap. All of the above spacing adjustment methods can achieve the function of automatically adjusting the distance between the negative pressure adsorption structure 321 and the outer circumference of the product according to the diameter of the printed product.

[0074] A flexible suction nozzle can be fitted over the suction port of the negative pressure adsorption structure 321. The flexible suction nozzle is made of silicone or rubber and will not scratch the product when it comes into slight contact with the product surface. During the adjustment process of the adaptive distance adjustment structure 322, if an adjustment error causes the suction port to get too close to the product surface, the flexible suction nozzle will first contact the product surface to act as a buffer, avoiding a rigid collision between the hard suction port and the product.

[0075] The lifting and feeding assembly 33 is located below the fixture device 32 and includes a load-bearing adjustment structure 331 and a lifting structure 332. The load-bearing adjustment structure 331 is fixed to the bottom of the fixture device 32 and is used to adjust the distance between the two lifting structures 332. The adjustment rail 3311 is fixedly installed at the bottom of the fixture device 32 along the Y-axis, the adjustment slider 3312 is slidably engaged with the adjustment rail 3311, and the load-bearing frame 3313 is fixedly installed on the adjustment slider 3312. The operator pushes the adjustment slider 3312 along the adjustment rail 3311 according to the different lengths of the printed products, so that the distance between the two lifting structures 332 matches the length of the printed products. After the distance is adjusted to the correct position, the adjustment slider 3312 is locked and fixed to the adjustment rail 3311 by a locking mechanism, such as a screw.

[0076] The lifting structure 332 is mounted on the support frame 3313. The moving end of the lifting drive 3321 is fixedly connected to the twin shafts 3322. When the lifting drive 3321 extends, it drives the twin shafts 3322 to move upward, and the two support blocks 3323 connected to the top of the twin shafts 3322 lift the printed product upward. The top surface of the support blocks 3323 is inclined, and the top surfaces of the two support blocks 3323 are arranged opposite each other to form a V-shaped support surface. The V-shaped support surface has an automatic centering function. When the printed product is placed on the V-shaped support surface, it naturally rolls to the bottom of the V-shaped groove under its own gravity, so that the axis of the printed product is approximately located on the symmetrical center plane of the two support blocks 3323. The lifting structure 332 is also equipped with a laser detection and positioning function. The laser sensor can be installed on the support frame 3313 or the fixture device 32 at a convenient detection position, and the laser emission direction is towards the end of the printed product or the clamping position. During the lifting process of the printed product, the laser sensor continuously monitors the relative position between the end of the printed product and the clamping part of the fixture device 32. When a deviation between their axes is detected, the control system outputs a deviation signal. The operator or automatic correction mechanism then makes fine adjustments based on the deviation signal until the axis of the printed product is perfectly coaxial with the clamping axis of the fixture device 32. Coaxial clamping is a crucial prerequisite for ensuring that the printed product does not wobble or jump during rotation. Higher coaxiality results in better rotational stability and higher positioning accuracy for inkjet spraying and powder application.

[0077] In this embodiment, the lifting drive component 3321 is preferably a motor-driven linear module with a lead screw. The motor drives the lead screw to rotate, and the nut on the lead screw drives the moving end to rise and fall along the Z-axis. In other embodiments, the lifting drive component 3321 can also be a telescopic cylinder or an electric telescopic rod. The telescopic cylinder drives the piston rod to rise and fall by air pressure, which is simple in structure and low in cost, and is suitable for bearing relatively light-weight printing products. The electric telescopic rod achieves rising and falling by a motor-driven lead screw or gear and rack mechanism, which has a larger thrust and can precisely control the lifting stroke, and is suitable for scenarios with large load-bearing capacity or high requirements for lifting stroke accuracy.

[0078] As a fourth embodiment of this application:

[0079] Reference Appendix Figures 8 to 12 In the aforementioned spiral UV printing powder spraying machine, the powder spraying module 4 is located at the second processing position. The powder spraying head 41 is fixedly set in the horizontal direction, that is, the powder spraying head 41 does not participate in the horizontal movement along the Y-axis direction, but is only driven by the second Z-axis lifting assembly 42 to move up and down along the Z-axis direction to adapt to substrates of different diameters.

[0080] The powder-coating roller 45 is positioned inside the powder storage box 44 near the powder outlet. The outer periphery of the powder-coating roller 45 is covered with a flexible material layer with a certain roughness, capable of carrying powder particles out of the powder storage box 44. When the powder-coating roller 45 rotates, friction and adhesion are generated between its outer periphery and the powder. The powder is carried to the powder outlet by the rotation of the powder-coating roller 45 and, under the action of gravity, is sprinkled downwards through the powder dropper 4101. The rotational speed of the powder-coating roller 45 determines the amount of powder discharged per unit time; the faster the rotation, the more powder is carried out. The powder spraying motor 43 drives the powder-coating roller 45 to rotate through a transmission structure 46. In this embodiment, the transmission structure 46 is preferably a double-gear meshing transmission structure, including a meshing driving gear and a driven gear. The driving gear is mounted on the output shaft of the powder spraying motor 43, and the driven gear is mounted on the end of the powder-coating roller 45. The rotation of the powder spraying motor 43 is transmitted to the powder coating roller 45 through gear meshing. The transmission path is short and the transmission efficiency is high. Moreover, the gear meshing can ensure that the rotation speed of the powder coating roller 45 and the rotation speed of the powder spraying motor 43 maintain a precise proportional relationship.

[0081] In other embodiments, the transmission structure 46 can also employ a belt drive structure or a sprocket drive structure. The belt drive structure connects the output pulley of the powder spraying motor 43 and the pulley of the powder coating roller 45 via a synchronous belt, offering advantages such as smooth transmission and low noise, making it suitable for high-speed rotation scenarios. The sprocket drive structure connects the output sprocket of the powder spraying motor 43 and the sprocket of the powder coating roller 45 via a chain, offering advantages such as high load-bearing capacity and non-slippage, making it suitable for high-torque transmission scenarios. All of the above transmission structures can achieve the function of transmitting power from the powder spraying motor 43 to the powder coating roller 45.

[0082] A plate-type brush 49 is located at the bottom of the powder spraying head 41, on one or both sides of the powder inlet 4101 along the Y-axis. The cylinder body of the micro cylinder 48 is fixed on the powder spraying head 41, and the end of its piston rod is fixedly connected to the back of the plate-type brush 49. After the micro cylinder 48 is vented, the piston rod extends, pushing the plate-type brush 49 toward the outer circumference of the product being printed. The bristles of the plate-type brush 49 are made of a flexible material with a certain degree of elasticity, which can adaptively adhere to the curved contour when contacting the product surface, so that the bristles make uniform contact with the curved surface and the cleaning effect is better. After the powder is applied, the micro cylinder 48 is vented in the reverse direction, the piston rod retracts and drives the plate-type brush 49 to retract and reset, avoiding the passage of the next product. This retractable brush structure allows the powder spraying module 4 to adapt to products of different diameters. The brush extension is small for large-diameter products and large for small-diameter products, always ensuring effective contact between the brush and the product surface without generating excessive pressure.

[0083] The powder nozzle accordion cover 410 is located at the powder inlet 4101 and is normally closed. During powder application, the powder nozzle accordion cover 410 opens, exposing the powder inlet 4101; after powder application stops, the powder nozzle accordion cover 410 closes, sealing the powder inlet 4101. The powder nozzle accordion cover 410 can be pneumatically or electromagnetically driven and is linked to the powder application start / stop signal of the control system.

[0084] The discharge rope 47 is mounted on the powder spraying head 41 and located on the side near the powder inlet 4101. The end of the discharge rope 47 can extend into the powder falling path below the powder inlet 4101, so that static electricity is promptly conducted away when the falling powder passes near the discharge rope 47. In other embodiments, the discharge rope 47 can also take the form of a conductive brush or conductive strip, etc., with the same working principle: to connect the powder to the equipment ground wire and eliminate static electricity.

[0085] During the spreading process, some of the powder that is not adhered to by the glue is brushed off by the plate brush 49 and falls below, while the other part floats in the working space in a suspended state. A negative pressure recovery device can be set up in this area to prevent residual powder from drifting away.

[0086] Throughout the processing, the trajectory of the printed product is a spiral—it continuously rotates around its own axis while simultaneously translating at a constant speed along the Y-axis, with the two combining to form a spiral motion with equal pitch. The inkjet adhesive module 2 and the powder spraying module 4 maintain a fixed position or only adjust their height along the Z-axis during product movement, without participating in horizontal movement along the Y-axis. This "product movement, module fixation" approach simplifies the structure of the inkjet adhesive module 2 and the powder spraying module 4, eliminating the need for a horizontal movement drive mechanism and its associated cable chains, cable protection, and other auxiliary devices, thus reducing the structural complexity and manufacturing cost of the equipment. Furthermore, since the powder spraying head 41 is fixed horizontally, the position of the powder dropper 4101 relative to the movement path of the printed product is determined, unaffected by the cumulative error of the horizontal movement mechanism, resulting in high repeatability of the powder application point.

[0087] The same or similar parts among the above embodiments can be referred to each other, and technical details not described in detail in this embodiment can be found in the relevant descriptions of other embodiments. The technical solutions described in each embodiment can be arbitrarily combined without conflict, and the combined technical solutions also fall within the scope of this application.

Claims

1. A spiral UV printing powder dispensing integrated machine, comprising a main unit (1), characterized in that: The main unit (1) is provided with a loading space (11), a first processing position and a second processing position in sequence along the Y-axis feed direction; Also includes: The inkjet adhesive spraying module (2) is fixedly set on the first processing position on the host (1) in the Y-axis direction, and the inkjet adhesive spraying module (2) has a degree of freedom in the Z-axis direction for spraying UV ink and UV curing adhesive onto the outer peripheral surface of the substrate. The substrate feeding module (3) is set on the main unit (1) and extends to cover the loading space (11), the first processing position and the second processing position. It is used to carry and drive the substrate to rotate around its own axis and simultaneously translate along the Y-axis direction. The rotation and the translation are coupled to form a spiral motion trajectory. The powder spraying module (4) is fixedly set on the second processing position in the Y-axis direction. The powder spraying module (4) has a degree of freedom in the Z-axis direction for spraying powder onto the outer peripheral surface of the substrate product in a rotating state. The powder spraying module (4) includes a quantitative powder feeding mechanism and a residual powder cleaning mechanism; the quantitative powder feeding mechanism is used to quantitatively supply powder to the outer peripheral surface of the printing substrate; the residual powder cleaning mechanism is movably disposed at the bottom of the powder spraying module (4) and is used to contact and sweep away the residual powder that is not adhered to the outer peripheral surface of the printing substrate after powdering. The substrate feeding module (3) continuously and sequentially transfers the substrate from the loading empty position (11) along the Y-axis direction to the processing station of the inkjet adhesive module (2) and the processing station of the powder spraying module (4) without intermediate clamping or transfer; the inkjet adhesive module (2) sequentially sprays UV ink and UV curing adhesive onto the target area on the outer periphery of the substrate along the spiral motion trajectory, and the powder spraying module (4) sprinkles powder onto the outer periphery of the substrate, and the powder adheres to the area covered by the adhesive.

2. The spiral UV printing powder dispensing integrated machine according to claim 1, characterized in that, The inkjet adhesive module (2) includes a printhead carriage (21), a printhead board (22), a dual-chamber twin valve body (23), a printhead (24), an anti-collision device (25), and a Z-axis lifting assembly. The printhead board (22), the dual-chamber twin valve body (23), and the printhead (24) are all mounted on the printhead carriage (21). The dual-chamber twin valve body (23) is used to control the independent supply and switching of adhesive and ink. The anti-collision device (25) is located at the bottom of the printhead carriage (21) to prevent the printhead (24) from colliding with the printed product. The Z-axis lifting assembly is connected to the printhead carriage (21) and is used to drive the printhead carriage (21) to move up and down along the Z-axis.

3. The spiral UV printing powder dispensing integrated machine according to claim 2, characterized in that, The Z-axis lifting assembly is any one of a lead screw motor lifting module, a telescopic cylinder lifting module, or an electric telescopic rod lifting module.

4. The spiral UV printing powder dispensing integrated machine according to claim 2, characterized in that, The Z-axis lifting assembly includes a first Z-axis lifting assembly (26) and a second Z-axis lifting assembly (42). The first Z-axis lifting assembly (26) is connected to the nozzle head (21) and the second Z-axis lifting assembly (42) is connected to the powder spraying module (4). The first Z-axis lifting assembly (26) and the second Z-axis lifting assembly (42) have the same structure.

5. The spiral UV printing powder dispensing integrated machine according to claim 4, characterized in that, When the first Z-axis lifting assembly (26) is a lead screw motor lifting module, it includes a limiting plate (261), a twin limiting slider (262), a limiting slide rail (263), a drive motor (264), a lead screw (265), and a lead screw sleeve block (266). The limiting plate (261) is fixedly mounted on the main unit (1), the limiting slide rail (263) is fixedly mounted on the back side of the nozzle carriage (21), the twin limiting slider (262) is slidably engaged with the limiting slide rail (263) and fixedly connected with the limiting plate (261). The drive motor (264) is fixedly mounted on the nozzle carriage (21), and its output shaft end is connected to the lead screw (265). The lead screw sleeve block (266) is threadedly engaged with the lead screw (265) and fixedly connected with the limiting plate (261).

6. The spiral UV printing powder dispensing integrated machine according to claim 1, characterized in that, The substrate feeding module (3) includes a linear feeding component (31) and a fixture device (32); the fixture device (32) is disposed on the linear feeding component (31) and is used to clamp the substrate and drive the substrate to rotate around its own axis; the linear feeding component (31) is used to drive the fixture device (32) to translate and feed along the axial direction of the substrate.

7. The spiral UV printing powder dispensing integrated machine according to claim 6, characterized in that, The linear feed assembly (31) includes a fixture moving plate (311), a limiting block (312), a limiting rail (313), a magnetic grating reader (314), and a linear drive module; the fixture device (32) is disposed on the fixture moving plate (311); the moving end of the linear drive module is fixedly connected to the fixture moving plate (311) and drives the fixture moving plate (311) to reciprocate linearly along the limiting rail (313); the limiting block (312) is slidably disposed on the limiting rail (313), and the top of the limiting block (312) is fixed to the bottom of the fixture moving plate (311); the magnetic grating reader (314) is disposed on one side of the bottom of the fixture moving plate (311) and is used to detect the moving position of the fixture moving plate (311).

8. The spiral UV printing powder dispensing integrated machine according to claim 7, characterized in that, The linear drive module is a linear motor, which includes a linear motor stator (315) and a linear motor mover (316). The linear motor stator (315) is fixedly mounted on the main unit (1), and the linear motor mover (316) is fixedly connected to the fixture moving plate (311). The linear motor mover (316) and the linear motor stator (315) are electromagnetically coupled to drive the fixture moving plate (311) to reciprocate linearly along the limiting rail (313).

9. The spiral UV printing powder dispensing integrated machine according to claim 6, characterized in that, The fixture device (32) is provided with two sets of negative pressure adsorption structures (321), and the two sets of negative pressure adsorption structures (321) are respectively located on both sides of the outer peripheral surface of the position where the fixture device (32) holds the printed product; the fixture device (32) is also provided with an adaptive distance adjustment structure (322). The adaptive spacing adjustment structure (322) is any one of a horizontally moving motor screw moving module, a telescopic cylinder moving module, or an electric telescopic rod moving module, and the moving end of the moving module is fixedly connected to the negative pressure adsorption structure (321) through a connector, which is used to adjust the spacing between the negative pressure adsorption structure (321) and the outer peripheral surface of the printing product according to the diameter of the printing product.

10. The spiral UV printing powder dispensing integrated machine according to claim 6, characterized in that, The substrate feeding module (3) further includes a lifting feeding assembly (33), which is located below the fixture device (32) and is used to lift the substrate from the loading position to the clamping position of the fixture device (32). The lifting feeding assembly (33) includes a load-bearing adjustment structure (331) and a lifting structure (332). The load-bearing adjustment structure (331) is fixedly located at the bottom of the fixture device (32), and the lifting structure (332) is mounted on the load-bearing adjustment structure (331). The load-bearing adjustment structure (331) is used to adjust the distance between the two lifting structures (332).

11. The spiral UV printing powder dispensing integrated machine according to claim 10, characterized in that, The load-bearing adjustment structure (331) includes an adjustment rail (3311), an adjustment slider (3312), and a load-bearing frame (3313); the adjustment rail (3311) is fixedly installed at the bottom of the fixture device (32), the adjustment slider (3312) is slidably fitted on the adjustment rail (3311), and the load-bearing frame (3313) is fixedly installed on the adjustment slider (3312); The lifting structure (332) is installed on the support frame (3313); the lifting structure (332) includes a lifting drive component (3321), a twin shaft (3322), and a support block (3323); the moving end of the lifting drive component (3321) is fixedly connected to the twin shaft (3322), and the lifting drive component (3321) is any one of a motor lead screw linear module, a telescopic cylinder, or an electric telescopic rod; The top of the twin shaft (3322) is connected to two support blocks (3323). The top surface of the support blocks (3323) is inclined, and the top surfaces of the two support blocks (3323) form a V-shaped support surface. The lifting structure (332) is also equipped with a laser detection and positioning function to detect the position of the printed product and the clamping part of the fixture device (32) to ensure coaxial clamping.

12. The spiral UV printing powder dispensing integrated machine according to claim 1, characterized in that, The quantitative powder feeding mechanism of the powder spraying module (4) includes a powder spraying head (41), a powder spraying motor (43), a powder storage box (44), a powder adsorption roller (45), a transmission structure (46), and an electric discharge rope (47). The powder storage box (44) is disposed on the powder spraying head (41). The powder adsorption roller (45) is rotatably disposed in the powder storage box (44) and located near the powder outlet of the powder storage box (44). The powder spraying motor (43) is connected to the powder adsorption roller (45) through the transmission structure (46). The bottom of the powder spraying head (41) is provided with a powder drop port (4101) corresponding to the powder outlet. The electric discharge rope (47) is disposed on the powder spraying head (41) and located on the side near the powder drop port (4101) to eliminate static electricity generated during the powder spraying process. The residual powder cleaning mechanism of the powder spraying module (4) includes a plate brush (49), a micro cylinder (48), and a powder outlet accordion cover (410). The plate brush (49) is located at the bottom of the powder spraying head (41). The output end of the micro cylinder (48) is connected to the plate brush (49) for driving the plate brush (49) to move toward and contact the outer peripheral surface of the printed product. The powder outlet accordion cover (410) is located at the powder drop outlet (4101) for closing the powder drop outlet (4101).

13. The spiral UV printing powder dispensing integrated machine according to claim 12, characterized in that, The transmission structure (46) can be any one of the following: double gear meshing transmission structure, belt drive structure, or sprocket drive structure.

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