Cylindrical multifunctional digital transfer printing machine

Abstract

The invention discloses a cylindrical multifunctional digital transfer printing machine, which relates to the technical field of printing and comprises a fixed adjusting device, a jet printing trolley, a trolley driving device or a printing stock driving device, a jet printing device and a transfer printing device. The fixed adjusting device is used for fixing and driving the printing stock to rotate; the jet printing trolley is positioned above the printing stock; the jet printing device comprises a spray head assembly and a UV curing lamp and is used for jet printing and curing a UV material; and the transfer printing device comprises a transfer printing mechanism and a transfer printing driving mechanism, and can realize pattern layer transfer printing. The trolley driving device and the printing stock driving device are used for driving the jet printing trolley and the fixed adjusting device to move in the direction of the rotating center line of the printing stock. According to the design, the UV printing and transfer printing processes are combined, design flexibility and printing precision are improved, repeated positioning is not needed, and efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to a cylindrical multi-functional digital transfer printing machine. Background Technology

[0002] A cylindrical UV printer is an advanced digital printing device that uses ultraviolet light to cure ink and prints patterns directly onto the surface of a cylinder through a precisely controlled printhead. This type of printer has significantly improved printing efficiency and quality while reducing production costs. Cylindrical UV printers typically employ spiral printing technology, which allows the printer to continuously print 360 degrees across the cylindrical surface, achieving seamless pattern coverage.

[0003] With the increasing demand for personalization and customization, surface decoration of cylindrical (including frustum-shaped) products such as glass bottles, wine bottles, and cosmetic bottles is becoming increasingly important. However, despite the significant advantages of cylindrical UV printers in terms of speed and efficiency, they still have limitations in color reproduction and process diversity. Existing cylindrical UV printers only have printing functions, printing patterns and colors in a limited range of processes, resulting in insufficiently rich and realistic color effects. This restricts their competitiveness in the high-end market and specific application areas.

[0004] Therefore, there is an urgent need to develop a new printing equipment that can not only provide efficient printing services, but also achieve richer and more realistic color effects. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a cylindrical multi-functional digital transfer printing machine that can not only provide high-efficiency printing services, but also achieve richer and more realistic color effects.

[0006] To achieve the above-mentioned technical objectives, this application provides a cylindrical multi-functional digital transfer printing machine, including a fixing and adjusting device, a printing carriage, a printing device, and a transfer device.

[0007] It also includes a trolley drive unit or a substrate drive unit;

[0008] The fixing and adjusting device is used to fix the printing substrate and drive the printing substrate to rotate.

[0009] The printing carriage is positioned above the fixed adjustment device;

[0010] The printing device includes a printhead assembly and a UV curing lamp;

[0011] The printhead assembly is installed on the printing carriage;

[0012] The UV curing lamp is installed below the fixed adjustment device;

[0013] The transfer device includes a transfer mechanism and a transfer drive mechanism;

[0014] The transfer drive mechanism is connected to the transfer mechanism and is used to drive the transfer mechanism to move away from or closer to the substrate.

[0015] The transfer mechanism is able to roll and contact the substrate under the drive of the transfer drive mechanism to transfer the layer onto the substrate;

[0016] The trolley drive device is connected to the printing trolley and is used to drive the printing trolley to move along the rotation center line of the substrate; the substrate drive device is connected to the fixing adjustment device and is used to drive the fixing adjustment device to move along the rotation center line of the substrate.

[0017] Furthermore, it also includes racks;

[0018] The frame has a fixed platform;

[0019] The fixed adjustment device is installed on the fixed platform;

[0020] A fixed frame mounted on the fixed adjustment device is installed on the fixed platform.

[0021] The printing carriage is mounted on the fixed frame.

[0022] Furthermore, the trolley drive device is installed on one side of the fixed frame and connected to the printing trolley;

[0023] The trolley drive device is also used to drive the printing trolley to move in the vertical direction.

[0024] Furthermore, the fixing and adjusting device includes a clamping mechanism and a rotary driver;

[0025] The clamping mechanism is used to clamp and fix the printing substrate;

[0026] The rotary driver is connected to the clamping mechanism and is used to drive the printing substrate to rotate.

[0027] Furthermore, the clamping mechanism includes a clamping fixing seat, a clamping adjustment assembly, and two clamping plates;

[0028] The two clamping plates are installed parallel to each other on one side of the clamping and fixing base;

[0029] At least one of the clamping plates is connected to the clamping fixing seat in an adjustable clamping displacement manner via the clamping adjustment assembly, so as to adjust the clamping distance between the two clamping plates;

[0030] Both clamping plates have rotatably mounted clamps on their inner sides that come into contact with and abut against the printing substrate;

[0031] The rotary driver is connected to one of the chucks and is used to drive the chuck to rotate.

[0032] Furthermore, the fixing adjustment device also includes an angle adjustment mechanism;

[0033] The angle adjustment mechanism is connected to the clamping mechanism and is used to adjust the tilt angle of the central axis of the substrate by adjusting the tilt angle of the clamping mechanism.

[0034] Furthermore, the transfer mechanism includes a transfer bracket, a transfer roller, an unwinding assembly, and a rewinding assembly;

[0035] The unwinding assembly is mounted on the transfer holder and is used to release the transfer material;

[0036] The winding assembly is mounted on the transfer bracket and is used to wind up the transfer material released from the unwinding assembly;

[0037] The transfer roller is mounted on the transfer bracket and is located on one side between the winding assembly and the unwinding assembly, for pressing the transfer material against the substrate;

[0038] The transfer drive mechanism is mounted on the clamping base or the fixing frame and is connected to the transfer bracket.

[0039] Furthermore, the transfer device also includes an auxiliary pressure roller and an auxiliary drive mechanism;

[0040] The auxiliary pressure rollers are arranged opposite to the transfer mechanism on both sides of the printing substrate;

[0041] The auxiliary drive mechanism is connected to the auxiliary pressure roller and is used to drive the auxiliary pressure roller to move to abut against the printing substrate.

[0042] Furthermore, the transfer device also includes a support roller and a base drive mechanism;

[0043] The idler roller is positioned below the printing substrate;

[0044] The base drive mechanism is connected to the idler roller and is used to drive the idler roller to move to abut against the printing substrate.

[0045] Furthermore, the printing apparatus also includes a curing lamp driving assembly;

[0046] The curing lamp drive assembly is installed below the fixed adjustment device and connected to the UV curing lamp, and is used to drive the UV curing lamp to move along the rotation center line of the substrate.

[0047] Furthermore, the curing lamp driving assembly is also used to drive the UV curing lamp to move closer to or further away from the substrate in the vertical direction.

[0048] Furthermore, the printhead assembly includes a first varnish printhead assembly, a second varnish printhead assembly, a third varnish printhead assembly, a color ink printhead assembly, and a white ink printhead assembly;

[0049] The first varnish printhead assembly, the second varnish printhead assembly, and the third varnish printhead assembly are distributed sequentially along the rotation center line of the substrate.

[0050] The color ink printhead assembly is located on the side of the second varnish printhead assembly away from the third varnish printhead assembly;

[0051] The white ink printhead assembly is located on the side of the first varnish printhead assembly that is away from the second varnish printhead assembly;

[0052] The first varnish nozzle assembly, the second varnish nozzle assembly, and the third varnish nozzle assembly are each composed of a row of varnish nozzles, or multiple rows of varnish nozzles arranged side by side.

[0053] Furthermore, the UV curing lamp includes a first lamp body and a second lamp body with a length greater than that of the first lamp body;

[0054] The first lamp body and the second lamp body are distributed sequentially along the rotation center line of the printing substrate;

[0055] The second lamp body is connected to the lamp body adjustment assembly;

[0056] The lamp body adjustment component is used to move the second lamp body away from or closer to the first lamp body;

[0057] The second lamp body, driven by the lamp body adjustment component, can make its illumination area cover all nozzle orifice areas of the nozzle assembly, or not cover some nozzle orifice areas of the nozzle assembly.

[0058] The first lamp body, driven by the curing lamp driving assembly, can cover part of the nozzle orifice area of ​​the nozzle assembly with its illumination area.

[0059] Furthermore, the second lamp body, driven by the lamp body adjustment component, can ensure that its illumination area does not cover part of the nozzle orifice area of ​​the third varnish nozzle assembly.

[0060] Furthermore, the fixing and adjusting device is installed on the substrate driving device;

[0061] The substrate driving device is mounted on the fixed platform and is used to drive the fixed adjustment device to move along the rotation center line of the substrate.

[0062] It also includes the vehicle drive components;

[0063] The trolley drive assembly is mounted on the fixed frame and connected to the printing trolley, and is used to drive the printing trolley to move in the vertical direction;

[0064] The transfer device is mounted on the substrate driving device and moves together with the fixing and adjusting device.

[0065] As can be seen from the above technical solutions, the cylindrical multi-functional digital transfer printing machine designed in this application has the following beneficial effects:

[0066] By adding a transfer device to complement the inkjet printing device, both printing and transfer processes can be achieved, and these processes can be combined in various ways, realizing a multi-functional machine. This adds more visual effects to the patterns, allowing designers to use more design elements to design products. Furthermore, high-precision printing and transfer can be achieved without repeatedly positioning the substrate, resulting in higher efficiency. Attached Figure Description

[0067] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0068] Figure 1 A perspective view of the cylindrical multi-functional digital transfer printing machine of Embodiments 1 / 2 provided in this application;

[0069] Figure 2 This is a cross-sectional view of the cylindrical multi-functional digital transfer printing machine of Embodiment 1 / 2 provided in this application;

[0070] Figure 3 This is a schematic diagram of the printing carriage and the fixed frame of the cylindrical multi-functional digital transfer printing machine provided in Embodiment 1 / 2 of this application;

[0071] Figure 4 This is a schematic diagram of the fixing and adjusting device of the cylindrical multi-functional digital transfer printing machine provided in Embodiment 1 / 2 of this application;

[0072] Figure 5 This is a schematic diagram of the transfer device of the cylindrical multi-functional digital transfer printing machine provided in Embodiment 1 / 2 of this application;

[0073] Figure 6 This is a schematic diagram of the curing lamp drive assembly and UV curing lamp of the cylindrical multifunctional digital transfer printing machine provided in Embodiment 1 / 2 of this application;

[0074] Figure 7 This is a perspective view of the cylindrical multi-functional digital transfer printing machine of Embodiment 3 provided in this application;

[0075] Figure 8 This is a cross-sectional view of the cylindrical multi-functional digital transfer printing machine of Embodiment 3 provided in this application;

[0076] In the diagram: 1. Fixed adjustment device; 11. Clamping mechanism; 111. Clamping fixing seat; 112. Clamping plate; 1121. Chuck; 113. Clamping adjustment assembly; 12. Rotary driver; 13. Angle adjustment mechanism; 2. Printing carriage; 31. Slide plate; 311. Clearance groove; 32. Carriage drive assembly; 4. Printhead assembly; 41. White ink printhead assembly; 42. Color ink printhead assembly; 43. First varnish printhead assembly; 44. Second varnish printhead assembly; 45. Third varnish printhead assembly; 5. 51. UV curing lamp; 52. First lamp body; 53. Second lamp body; 64. Transfer mechanism; 65. Transfer bracket; 66. Transfer roller; 67. Unwinding assembly; 68. Rewinding assembly; 69. Transfer drive mechanism; 70. Frame; 71. Fixed table; 72. Fixed frame; 81. Auxiliary pressure roller; 82. Auxiliary drive mechanism; 83. Support roller; 84. Bottom support drive mechanism; 9. Curing lamp drive assembly; 100. Printed substrate; 200. Cart drive device; 300. Printed substrate drive device. Detailed Implementation

[0077] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0078] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0080] This application discloses a cylindrical multi-functional digital transfer printing machine.

[0081] Please see Figure 1 , Figure 2 as well as Figure 4 One embodiment of the cylindrical multi-functional digital transfer printing machine provided in this application includes:

[0082] The device includes a fixed adjustment device 1, a printing carriage 2, a printing device, and a transfer device; it also includes a carriage drive device 200 or a substrate drive device 300.

[0083] The fixing and adjusting device 1 is used to fix the printing substrate 100 and drive the printing substrate 100 to rotate (that is, rotate around its own central axis). The printing substrate 100 includes, but is not limited to, cylindrical (including frustum-shaped) products such as glass bottles, wine bottles, and cosmetic bottles.

[0084] The printing carriage 2 is positioned above the fixing and adjusting device 1, specifically above the fixing station where the fixing and adjusting device 1 is used to fix the printing substrate 100. As a supporting mechanism, the printing carriage 2 can be structured as follows: Figure 1 The structure shown is L-shaped, with part of the structure used for fixed connection and part of the structure used to support the corresponding structural components; of course, it is not limited to the L-shaped structure shown in the figure, and those skilled in the art can make changes according to actual needs without restriction.

[0085] The printing device includes a printhead assembly 4 and a UV curing lamp 5.

[0086] The printhead assembly 4 is installed on the printing carriage 2 and is used to print the printing material onto the substrate 100. The printing material includes, but is not limited to, white ink, colored ink, and varnish (UV resin, transfer adhesive, hot stamping varnish). Those skilled in the art can make variations according to actual needs without limitation.

[0087] The UV curing lamp 5 is installed below the fixed adjustment device 1 and is used to cure the UV-curable inkjet printing material on the substrate 100. It can be understood that the UV curing lamp 5 is installed below the fixed adjustment device 1 (specifically below the fixed position of the fixed adjustment device 1 / directly below the substrate 100), and the light direction is upward.

[0088] The transfer device includes a transfer mechanism 61 and a transfer drive mechanism 62.

[0089] The transfer driving mechanism 62 is connected to the transfer mechanism 61 and is used to move the transfer mechanism 61 away from or towards the substrate 100. Driven by the transfer driving mechanism 62, the transfer mechanism 61 can roll and contact the substrate 100 to transfer the layer onto the substrate 100. The transfer mechanism 61 in this application can be a heat transfer mechanism 61 or a hot stamping mechanism (there are two types of transfer processes: heat transfer and hot stamping). The heat transfer process uses heat and pressure to transfer the layer on the transfer film onto the surface of the substrate, resulting in a realistic and beautiful finish that greatly enhances the product's quality. Hot stamping is a process that uses heat transfer to transfer the aluminum layer from electroplated aluminum foil to the surface of a substrate, creating a unique metallic effect. Transfer materials include heat transfer foil, electroplated aluminum foil foil, fabric foil, and foil made of materials such as PE, PET, PVC, and PP. Ink also comes in many types, such as water-based inks, UV inks, solvent-based inks, and pigment inks. Water-based inks, pigment inks, and solvent-based inks all require a heating device. Heating enhances their fluidity and coating performance, promotes drying, accelerates ink evaporation, and increases the drying time on the medium. Heating also improves the adhesion between the ink and the printing material, ensuring print quality.

[0090] The carriage drive device 200 is connected to the printing carriage 2 and is used to drive the printing carriage 2 to move along the rotation center line of the substrate 100. The substrate drive device 300 is connected to the fixing adjustment device 1 and is used to drive the fixing adjustment device 1 to move along the rotation center line of the substrate 100. It can be understood that one approach is to drive the printing carriage 2 to move the printhead assembly 4 along the central axis of the substrate 100, so as to achieve full-surface printing on the substrate 100; another approach is to drive the fixing adjustment device 1 to move the substrate 100 along its own central axis, so as to achieve full-surface printing on the substrate 100.

[0091] The cylindrical multi-functional digital transfer printing machine designed in this application has the following beneficial effects:

[0092] By adding a transfer device to complement the inkjet printing device, both printing and transfer processes can be achieved, and these processes can be combined in various ways, realizing a multi-functional machine. This adds more visual effects to the patterns, allowing designers to use more design elements to design products. Furthermore, high-precision printing and transfer can be achieved without repeatedly positioning the substrate, resulting in higher efficiency.

[0093] The above is Embodiment 1 of the cylindrical multi-functional digital transfer printing machine provided in this application. The following is Embodiment 2 of the cylindrical multi-functional digital transfer printing machine provided in this application. Please refer to the following for details. Figures 1 to 6 .

[0094] Based on the solution of Embodiment 1 above:

[0095] Furthermore, such as Figure 1 as well as Figure 2 As shown, it also includes a frame 7; the frame 7 has a fixed platform 71; the fixed adjustment device 1 is installed on the fixed platform 71.

[0096] A fixed frame 72 mounted on a fixed adjustment device 1 is installed on a fixed table 71; the printing carriage 2 is mounted on the fixed frame 72.

[0097] The fixed frame 72 serves as a support structure to support the printing carriage 2, and its specific structure can be designed according to actual needs (e.g., Figure 1 As shown, it is in the shape of a gantry frame to meet the requirements of bearing and stabilizing the printing carriage 2.

[0098] Furthermore, such as Figure 2 as well as Figure 3 As shown, taking the carriage drive device 200 driving the printing carriage 2 to move as an example, the carriage drive device 200 can be installed on one side of the fixed frame 72 and connected to the printing carriage 2.

[0099] The carriage drive unit 200 can be a single-axis linear module, capable of driving the printing carriage 2 along... Figure 1 The material can be moved along the x-axis, which is parallel to the rotation center line of the substrate 100.

[0100] Furthermore, the carriage drive unit 200 can also drive the printing carriage 2 to move in the vertical direction; for example, the carriage drive unit 200 can also be a dual-axis linear module, that is, composed of two linear modules, which respectively drive the printing carriage 2 along the vertical direction. Figure 1The movement along the x-axis and z-axis shown means that the carriage drive device 200 can not only drive the printing carriage 2 to move horizontally, but also drive the printing carriage 2 to move vertically (realizing the vertical movement control away from or towards the substrate 100). The vertical movement control can adapt to printing on substrates 100 of different diameters, and also makes the loading and unloading of the substrate 100 more convenient.

[0101] The linear module can be any common guide rail linear module, lead screw linear module, etc., without restriction.

[0102] Furthermore, such as Figure 3 As shown, the design of the fixed adjustment device 1 includes a clamping mechanism 11 and a rotary driver 12.

[0103] The clamping mechanism 11 is used to clamp and fix the substrate 100. There are two clamping and fixing methods: one is single-end clamping (that is, clamping and fixing one end of the substrate 100), and the other is double-end clamping (that is, pressing the two ends of the substrate 100 against each other).

[0104] The rotary driver 12 is connected to the clamping mechanism 11 and is used to drive the substrate 100 to rotate. Corresponding to the two methods mentioned above, the rotary driver 12 can drive the substrate 100 to rotate by driving the clamping mechanism 11 to rotate, or it can be installed on the clamping mechanism 11 to directly drive the substrate 100 to rotate.

[0105] Furthermore, such as Figure 4 As shown, taking the two-end clamping and fixing design as an example, the clamping mechanism 11 includes a clamping and fixing seat 111, a clamping adjustment component 113, and two clamping plates 112.

[0106] Two clamping plates 112 are installed parallel to each other on one side of the clamping base 111; at least one clamping plate 112 is connected to the clamping base 111 with adjustable clamping displacement via a clamping adjustment assembly 113 to adjust the clamping distance between the two clamping plates 112. The clamping adjustment assembly 113 can be a threaded adjustment rod, a slide rail adjustment mechanism, or an electric adjustment mechanism, such as an electric push rod / telescopic cylinder, making operation simple and adjustment precise.

[0107] Both clamping plates 112 have rotatably mounted chucks 1121 on their inner sides that come into contact with and abut against the substrate 100; the rotary driver 12 is connected to one of the chucks 1121 and is used to drive the chuck 1121 to rotate.

[0108] The chuck 1121 is preferably made of rubber or other soft materials with a high coefficient of friction to increase the friction between it and the substrate 100, ensuring that the substrate will not slip or slide during rotation. At the same time, the shape of the chuck 1121 is designed to match the outer surface of the substrate to provide uniform clamping force and avoid damage to the surface of the substrate.

[0109] The rotary driver 12 can be directly connected to the chuck 1121, such as through a keyway or flange connection, to ensure the stability and reliability of power transmission. The rotary driver 12 can be a conventional rotary motor (such as a servo motor), which will not be described in detail here.

[0110] Furthermore, such as Figure 4 As shown, the fixing adjustment device 1 also includes an angle adjustment mechanism 13; the angle adjustment mechanism 13 is connected to the clamping mechanism 11 and is used to adjust the tilt angle of the central axis of the substrate 100 by adjusting the tilt angle of the clamping mechanism 11, which can also be understood as adjusting the tilt angle of the rotation center line of the substrate 100.

[0111] The angle adjustment mechanism 13 increases the flexibility and applicability of the equipment (e.g., facilitating printing on frustum-shaped products, ensuring the printing surface of the frustum-shaped product remains horizontal). The angle adjustment mechanism 13 can be a manual adjustment mechanism, such as an adjustment knob or handle, adjusting the tilt angle of the clamping mechanism 11 through rotation or push-pull operation; or it can be an automatic adjustment mechanism, such as an electric push rod, hydraulic cylinder, or pneumatic cylinder, achieving precise adjustment of the tilt angle of the clamping mechanism 11 through electric, hydraulic, or pneumatic drive. In practical implementation, a suitable angle adjustment mechanism 13 can be selected according to actual needs, and corresponding transmission mechanisms and connection structures can be designed to ensure the accuracy and stability of angle adjustment.

[0112] Furthermore, such as Figure 1 , Figure 2 as well as Figure 5 As shown, the transfer mechanism 61 includes a transfer bracket 611, a transfer roller 612, an unwinding assembly 613, and a winding assembly 614. The unwinding assembly 613 is mounted on the transfer bracket 611 and is used to release the transfer material. The winding assembly 614 is mounted on the transfer bracket 611 and is used to wind up the transfer material released from the unwinding assembly 613. The transfer roller 612 is mounted on the transfer bracket 611 and is located on one side between the winding assembly 614 and the unwinding assembly 613, and is used to press (tighten) the transfer material onto the substrate 100.

[0113] The transfer drive mechanism 62 can drive the transfer holder 611 in the horizontal direction along a direction perpendicular to the rotation center line of the substrate 100 (specifically as follows). Figure 1 The transfer mechanism 61 moves (in the y-axis direction shown), that is, it moves the transfer roller 612 away from or closer to the substrate 100 to meet the needs of the transfer operation. In terms of the front-to-back direction, the transfer mechanism 61 is located on the rear side of the substrate 100, and the transfer drive mechanism 62 can drive the transfer roller 612 / rewind assembly 614 / unwind assembly 613 to move back and forth together.

[0114] In practical implementation, the transfer drive mechanism 62 can be a linear drive device such as a cylinder, hydraulic cylinder or electric push rod. Its installation position can be selected according to actual needs, as long as it can meet the requirements of driving the transfer mechanism 61 to perform the required movement.

[0115] The transfer roller 612 in the transfer mechanism 61 can refer to existing structural designs or be reused, such as being composed of a metal core shaft and a rubber tube wrapped around the metal core shaft, wherein the rubber tube is preferably made of silicone material with a certain hardness.

[0116] In addition, both the unwinding assembly 613 and the rewinding assembly 614 include a roll and a drive motor for rotating the roll to achieve automatic unwinding and rewinding of the transfer material. In specific implementations, appropriate rolls and drive motors can be selected according to the type and specifications of the transfer material, and corresponding transmission and tension control mechanisms can be designed to ensure smooth transport and tension control of the transfer material. Specific details will not be elaborated further.

[0117] The transfer drive mechanism 62 is mounted on the clamping base 111 or on the mounting bracket 72 and is connected to the transfer bracket 611. The design of mounting it on the clamping base 111 is preferred, as the overall structure is more compact.

[0118] Furthermore, such as Figure 5 As shown, the transfer device also includes an auxiliary pressure roller 81 and an auxiliary drive mechanism 82; the auxiliary pressure roller 81 and the transfer mechanism 61 are disposed opposite to each other on both sides of the substrate 100; taking the transfer mechanism 61 disposed on the rear side of the substrate 100 as an example, the auxiliary pressure roller 81 is disposed on the front side of the substrate 100.

[0119] The auxiliary drive mechanism 82 is connected to the auxiliary pressure roller 81 and is used to drive the auxiliary pressure roller 81 to move to abut against the substrate 100.

[0120] The auxiliary pressure roller 81 is designed to provide reverse auxiliary support to the substrate 100, making the force on the substrate 100 more uniform and further improving the accuracy and effect of the transfer. The auxiliary drive mechanism 82 can be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod, used to drive the auxiliary pressure roller 81 in a direction perpendicular to the rotation center line of the substrate 100 (i.e., Figure 1 The auxiliary pressure roller 81 moves in the y-axis direction (as shown) to adjust and control the contact pressure between the auxiliary pressure roller 81 and the substrate 100.

[0121] Furthermore, such as Figure 5 As shown, the transfer device also includes a support roller 83 and a base drive mechanism 84; the support roller 83 is disposed below the substrate 100; the base drive mechanism 84 is connected to the support roller 83 and is used to drive the support roller 83 to move to abut against the substrate 100.

[0122] There can be two rollers 83, which are spaced apart. The space between the two rollers 83 can be used to avoid the light from the UV curing lamp 5.

[0123] The addition of a bottom support roller 83, which works in conjunction with the auxiliary pressure roller 81 and the transfer roller 612, presses the substrate 100 from three directions, resulting in more uniform force on the substrate 100 and further improving the accuracy and effect of the transfer. The bottom support drive mechanism 84 can also be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod, which drives the support roller 83 to move vertically.

[0124] In the design, the central axis of the transfer roller 612 and the central axis of the auxiliary pressure roller 81 are at a height higher than the central axis of the substrate 100, so that a downward component force can be generated when pressing the substrate 100, which balances the upward force applied by the support roller 83, so that the substrate 100 is subjected to uniform force.

[0125] Furthermore, such as Figure 6 As shown, taking the carriage drive device 200 driving the inkjet carriage 2 to move as an example, in order to realize the synchronous movement of the UV curing lamp 5 and the inkjet carriage 2 (or the substrate 100), the inkjet device is also designed with a curing lamp drive component 9.

[0126] The curing lamp drive assembly 9 is installed below the fixed adjustment device 1 and connected to the UV curing lamp 5, and is used to drive the UV curing lamp 5 to move along the rotation center line of the substrate 100.

[0127] Furthermore, such as Figure 6 As shown, the curing lamp drive assembly 9 is also used to drive the UV curing lamp 5 to move closer to or further away from the substrate 100 in the vertical direction. It can be understood that the curing lamp drive assembly 9 also has a lifting control function. Similar to the aforementioned carriage drive device 200 design, it can also adopt a dual-axis linear module design, that is, it consists of two sets of linear modules. The linear module used to drive the UV curing lamp 5 to move along the x-axis can be a lead screw linear module, while the one driving the UV curing lamp 5 to lift and lower can be a cylinder; there are no specific limitations. Furthermore, the lifting function design can accommodate printing on substrates 100 of different diameters, and also facilitates the loading and unloading operations of the substrate 100.

[0128] Furthermore, such as Figure 1 as well as Figure 3 As shown, the design of the printhead assembly 4 includes a first varnish printhead assembly 43, a second varnish printhead assembly 44, a third varnish printhead assembly 45, a color ink printhead assembly 42, and a white ink printhead assembly 41.

[0129] The first varnish printhead assembly 43, the second varnish printhead assembly 44, and the third varnish printhead assembly 45 are distributed sequentially along the rotation center line of the substrate 100 (specifically as follows). Figure 1 As shown, they are distributed sequentially from right to left along the rotation center line / x-axis direction.

[0130] The color ink printhead assembly 42 is located on the side of the second varnish printhead assembly 44 away from the third varnish printhead assembly 45; the white ink printhead assembly 41 is located on the side of the first varnish printhead assembly 43 away from the second varnish printhead assembly 44; the first varnish printhead assembly 43, the second varnish printhead assembly 44 and the third varnish printhead assembly 45 are each composed of a row of varnish printheads, or multiple rows of varnish printheads arranged side by side.

[0131] The multi-row varnish printhead design can achieve both matte and glossy effects in the printed pattern. Specifically, taking two rows of varnish printheads as an example, one row is responsible for printing the matte effect, and the other row is responsible for printing the glossy effect. In this way, the pattern with both matte and glossy effects can be clearly defined and well combined.

[0132] Each printhead assembly in this application is based on an existing printhead mechanism design. Those skilled in the art can refer to or directly use the printhead mechanism of an existing cylindrical UV printer. Therefore, the specific structure of each printhead assembly will not be described in detail in this application.

[0133] Furthermore, such as Figure 6 As shown, the UV curing lamp 5 includes a first lamp body 51 and a second lamp body 52 with a length greater than the first lamp body 51, realizing a design with one long and one short.

[0134] The first lamp body 51 and the second lamp body 52 are sequentially distributed along the rotation center line of the substrate 100. The second lamp body 52 is connected to a lamp body adjustment assembly (not shown in the figure). The lamp body adjustment assembly is used to move the second lamp body 52 away from or closer to the first lamp body 51, thereby changing the coverage of the illumination area of ​​the second lamp body 52 by changing its position. The lamp body adjustment assembly can be a displacement mechanism with a certain adjustment stroke, such as a lead screw displacement mechanism, etc., and there is no specific limitation.

[0135] The second lamp body 52, driven by the lamp body adjustment component, can make its illumination area cover all nozzle orifice areas of the nozzle assembly 4, or partially nozzle orifice areas of the nozzle assembly 4.

[0136] Specifically, the light source of the second lamp body 52 can cover the white ink printhead assembly 41, the first varnish printhead assembly 43, and the color ink printhead assembly 42; it can also cover most of the right side of the second varnish printhead assembly 44 and the third varnish printhead assembly 45 according to different transfer process requirements, leaving the last row of varnish printheads on the left side of the third varnish printhead assembly 45 uncovered (specifically, the illumination area of ​​the first lamp body 51 is located on the left side outside the third varnish printhead assembly 45, and can cover part of the nozzle area of ​​the varnish printhead assembly 43 under the drive of the curing lamp drive assembly 9); it can also completely cover the white ink printhead assembly 41, the color ink printhead assembly 42, and all varnish printhead assemblies under the drive of the curing lamp drive assembly 9.

[0137] The varnish sprayed from the nozzle area not covered by light will cover the previous varnish and will not cure immediately. The varnish will level out and begin to cure after being exposed to light from the first lamp body 51 for a short period of time. At this time, the surface of the substrate 100 will form a high-gloss effect.

[0138] The workflow of the cylindrical multi-functional digital transfer printing machine designed in this application is as follows:

[0139] 1. First, place the cylindrical substrate on the fixed adjustment device 1, clamp it by the clamping mechanism 11, and adjust the printing surface of the substrate 100 to keep it horizontal by the adjustment mechanism. Then, drive the substrate 100 to rotate by the rotary driver 12.

[0140] 2. When the substrate begins to rotate stably, the printing carriage 2, driven by the carriage drive device 200, moves slowly and uniformly from left to right on the fixed frame 72. The rotating substrate 100 is first sprayed with white ink by the white ink printhead assembly 41, moving slowly to the right while spraying white ink. The spraying trajectory is a spiral route. The curing lamp drive assembly 9 below the substrate 100 drives the UV curing lamp 5 to move synchronously to the right with the printing carriage 2, so that the UV curing lamp 5 cures the sprayed white ink. When transfer is required, the varnish printhead in the first varnish printhead assembly 43 sprays varnish (transfer adhesive, UV resin, hot stamping varnish) on the cured white ink. The areas where transfer is not required are sprayed with hot stamping varnish. At this time, because the next step is to perform transfer, the position of the color ink printhead assembly 42 on the left side of the first varnish printhead assembly 43 will be greater than the length of the substrate 100. After the white ink printhead assembly 41 and the first varnish printhead assembly 43 have finished printing and curing the entire substrate 100, the transfer drive mechanism 62 will drive the transfer roller 612, the unwind assembly 613 and the rewind assembly 614 to press the transfer material onto the substrate 100. At the same time, the auxiliary pressure roller 81 will also be driven by the auxiliary drive mechanism 82 to press against the substrate 100. The support roller 83 will also be supported by the bottom support drive mechanism 84. The transfer roller 612, the auxiliary pressure roller 81 and the support roller 83 are all pressed against three equally distributed points on the substrate 100, so that the substrate is subjected to uniform force and the transfer is completed stably (the substrate 100 needs to have a certain strength to avoid extrusion deformation).

[0141] 3. After the first transfer is completed, the transfer drive mechanism 62 drives the transfer roller 612 to move backward, the auxiliary drive mechanism 82 drives the auxiliary pressure roller 81 to retract, and the bottom support drive mechanism 84 drives the support roller 83 to move downward. At this time, the printing carriage 2 moves from left to right until the printhead of the color ink printhead assembly 42 contacts the leftmost side of the substrate 100. The printing carriage 2 continues to move to the right and begins to print color patterns on the rotating substrate 100 surface (printing occurs when the planned color pattern area on the substrate 100 rotates to the top, and the ink is cured by the UV curing lamp 5 when the color pattern area rotates to the bottom).

[0142] 4. When the second varnish printhead assembly 44 starts printing, the varnish (transfer adhesive, UV resin, hot stamping varnish) printed by the second varnish printhead assembly 44 will cover the colored pattern area printed by the color ink printhead assembly 42.

[0143] In the above process, if the next step does not require a transfer process, the varnish sprayed in the second varnish nozzle area covers the colored pattern and is cured to complete the printing. However, when the long second lamp body 52 covers most of the right-side nozzle area of ​​the white ink nozzle assembly 41, the first varnish nozzle assembly 43, the color ink nozzle assembly 42, and the second varnish nozzle assembly 44, and the short first lamp body 51 is on the left side of the second varnish nozzle assembly 44, the varnish sprayed in the left-side nozzle area of ​​the last row of varnish nozzles on the left side of the second varnish nozzle assembly 44 is not covered by the light of the long second lamp body 52. ​​The printed varnish is not cured immediately and will flow level on the substrate 100. Then, as the printing carriage 2 moves to the right, the short first lamp body 51 in the UV curing lamp 5 will cure the leveled varnish to complete the product process. At this time, the surface of the product will have a high gloss effect.

[0144] However, when the long second lamp body 52 covers the entire area of ​​the white ink printhead assembly 41, the first varnish printhead assembly 43, the color ink printhead assembly 42, and the second varnish printhead assembly 44, the varnish is immediately cured after being sprayed onto the substrate surface, completing the product process. At this time, the surface of the product will have a frosted effect.

[0145] If the printed pattern needs to have both a matte and a glossy finish, then the second varnish nozzle assembly 44 needs at least two rows of varnish nozzles. The varnish nozzles on the right are responsible for printing the matte area, and the varnish is cured immediately after printing. The last row of varnish nozzles on the left is responsible for printing the area that needs a glossy finish. This requires that the varnish printed on the left side of the nozzles of the last row of varnish nozzles on the left needs to be leveled before it is cured by the short first lamp body. This will result in a glossy finish.

[0146] In the above process, if a transfer printing process is required in the next step, the varnish (transfer adhesive, UV resin, hot stamping varnish) and heat-resistant varnish sprayed by the second varnish printhead assembly 44 are sprayed on the colored pattern printed by the color ink printhead assembly 42 (or on the edge of the pattern, or on the blank area of ​​the pattern), and the UV curing lamp 5 will immediately cure the varnish. When the colored pattern is printed on the entire substrate 100, and the printhead of the second varnish printhead assembly 44 leaves the right side of the substrate 100 and stops printing, the transfer drive mechanism 62 will drive the transfer roller 612, the unwind assembly 613 and the rewind assembly 614 to press the transfer material onto the substrate. At this time, the auxiliary pressure roller 81 will also be driven by the auxiliary drive mechanism 82 to press against the substrate, and the support roller 83 will also be driven by the bottom support drive mechanism 84 to support the bottom of the substrate 100, so that the substrate is subjected to uniform force and the transfer is completed. After the transfer is completed, the transfer drive mechanism 62 drives the transfer roller 612 to move backward, the auxiliary drive mechanism 82 drives the transfer auxiliary pressure roller 81 to retract, and the bottom support drive mechanism 84 drives the support roller 83 to move downward. At this time, the printing carriage 2 moves from left to right and the nozzle of the third varnish nozzle assembly 45 contacts the leftmost side of the substrate 100, and then the varnish is sprayed.

[0147] However, when the long second lamp body 52 covers most of the right-side nozzle area of ​​the white ink printhead assembly 41, the first varnish printhead assembly 43, the color ink printhead assembly 42, the second varnish printhead assembly 44, and the third varnish printhead assembly 45, and the short first lamp body 51 is on the left-side outer side of the third varnish printhead assembly 45, the varnish printed on the left-side nozzle area of ​​the last row of varnish printheads on the left side of the third varnish printhead assembly 45 is not covered by the light of the long second lamp body 52. ​​The printed varnish is not immediately cured and will flow level on the substrate. Then, as the printing carriage 2 moves to the right, the short first lamp body 51 in the UV curing lamp 5 will cure the leveled varnish to complete the product process. At this time, the surface of the product will show a high-gloss effect.

[0148] However, when the long second lamp body 52 covers the entire area of ​​the white ink printhead assembly 41, the first varnish printhead assembly 43, the color ink printhead assembly 42, the second varnish printhead assembly 44, and the third varnish printhead assembly 45, the surface of the product will have a frosted effect because the varnish is immediately cured after being sprayed onto the surface of the substrate 100, thus completing the product process. If the printed pattern needs to have both a frosted and a high-gloss effect, then the third varnish printhead assembly 45 needs at least two rows of varnish printheads. The varnish printheads on the right are responsible for spraying the frosted area, and the varnish is cured immediately after spraying. The last row of varnish printheads on the left is responsible for spraying the area that needs a high-gloss effect. This requires that the varnish sprayed from the left side of the nozzles of the last row of varnish printheads on the left needs to be leveled before the short first lamp body 51 starts to cure, thus obtaining a high-gloss effect.

[0149] In the above printing process, the materials transferred each time can be the same or different, so that the transferred pattern can have a variety of metallic effects. Of course, the printing carriage 2 can also perform multi-pass printing to achieve more visual effects.

[0150] The cylindrical multi-functional digital transfer printing machine designed in this application can realize, but is not limited to, the following printing process:

[0151] Colorful patterns + transfer

[0152] 1. Substrate 100 → White ink printhead assembly 41 sprays white ink → First varnish printhead assembly 43 sprays varnish → Transfer device performs transfer → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish.

[0153] 2. Substrate 100 → White ink printhead assembly 41 sprays white ink → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish → Transfer device performs transfer → Third varnish printhead assembly 45 sprays varnish.

[0154] 3. Substrate 100 → White ink printhead assembly 41 sprays white ink → First varnish printhead assembly 43 sprays varnish → Transfer device performs transfer → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish → Transfer device performs transfer → Third varnish printhead assembly 45 sprays varnish.

[0155] 4. Substrate 100 → First varnish printhead assembly 43 sprays varnish → Transfer device performs transfer → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish.

[0156] 5. Substrate 100 → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish → Transfer device performs transfer → Third varnish printhead assembly 45 sprays varnish.

[0157] 6. Substrate 100 → First varnish printhead assembly 43 sprays varnish → Transfer device performs transfer → Color ink printhead assembly 42 sprays color ink → Second varnish printhead assembly 44 sprays varnish → Transfer device performs transfer → Third varnish printhead assembly 45 sprays varnish.

[0158] The above six printing processes for cylindrical multi-functional digital transfer printing machines can be performed before, after, or both before and after color printing.

[0159] The following is Embodiment 3 of the cylindrical multi-functional digital transfer printing machine provided in this application. Please refer to the following for details. Figures 7 to 8 .

[0160] like Figures 7 to 8 As shown, the fixing adjustment device 1 is installed on the substrate driving device 300; the substrate driving device 300 is installed on the fixed table 71 and is used to drive the fixing adjustment device 1 to move along the rotation center line (x-axis direction) of the substrate 100. The substrate driving device 300 can be a linear motor with at least two slide rails, or a linear module such as a lead screw slide mechanism, which is connected to a large-sized slide plate 31, which can be used to install the fixing adjustment device 1 and the transfer device. There are no specific limitations.

[0161] If vertical movement control of the printing carriage 2 is also required, an additional carriage drive assembly 32 needs to be designed. The carriage drive assembly 32 is mounted on the fixed frame 72 and connected to the printing carriage 2 to drive the printing carriage 2 to move vertically.

[0162] The slide plate 31 is provided with a clearance groove to avoid the installation of the curing lamp drive assembly 9. At this time, the curing lamp drive assembly 9 only needs to drive the UV curing lamp 5 to move up and down. The design of the clearance groove 311 needs to meet the lifting clearance of the UV curing lamp 5 and the movement stroke requirements of the substrate 100. The clearance groove 311 can be a long rectangular groove design, which will not be described in detail.

[0163] It also includes a carriage drive assembly 32, which is mounted on the fixed frame 72 and connected to the printing carriage 2, and is used to drive the printing carriage 2 to move in the vertical direction. Since the substrate drive device 300 is used to drive the fixed adjustment device 1 to move, in order to achieve vertical movement control of the printing carriage 2, an additional carriage drive assembly 32 can be added to achieve control.

[0164] In Embodiment 3, the transfer device is mounted on the substrate driving device 300 and moves together with the fixing and adjusting device 1.

[0165] Other structures are similar to those in Embodiment 2 above and will not be described in detail.

[0166] The cylindrical multi-functional digital transfer printing machine provided in this application has been described in detail above. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the embodiments of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A cylindrical multi-functional digital transfer printing machine, characterized in that, It includes a fixed adjustment device (1), a printing carriage (2), a printing device, and a transfer device; It also includes a trolley drive unit (200) or a substrate drive unit (300). The fixing and adjusting device (1) is used to fix the printing substrate (100) and drive the printing substrate (100) to rotate. The printing carriage (2) is positioned above the fixed adjustment device (1); The printing device includes a printhead assembly (4) and a UV curing lamp (5); The printhead assembly (4) is installed on the printing carriage (2); The UV curing lamp (5) is installed below the fixing and adjusting device (1); The transfer device includes a transfer mechanism (61) and a transfer drive mechanism (62). The transfer drive mechanism (62) is connected to the transfer mechanism (61) and is used to drive the transfer mechanism (61) to move away from or closer to the substrate (100); The transfer mechanism (61) is able to roll into contact with the substrate (100) under the drive of the transfer drive mechanism (62) to transfer the layer onto the substrate (100). The trolley drive device (200) is connected to the inkjet trolley (2) and is used to drive the inkjet trolley (2) to move along the rotation center line of the substrate (100); the substrate drive device (300) is connected to the fixed adjustment device (1) and is used to drive the fixed adjustment device (1) to move along the rotation center line of the substrate (100).

2. The cylindrical multi-functional digital transfer printing machine according to claim 1, characterized in that, It also includes the rack (7); The frame (7) has a fixed platform (71); The fixed adjustment device (1) is installed on the fixed platform (71); A fixed frame (72) mounted on the fixed adjustment device (1) is installed on the fixed platform (71). The printing carriage (2) is mounted on the fixed frame (72).

3. The cylindrical multi-functional digital transfer printing machine according to claim 2, characterized in that, The trolley drive unit (200) is installed on one side of the fixed frame (72) and connected to the printing trolley (2); The trolley drive device (200) is also used to drive the printing trolley (2) to move in the vertical direction.

4. The cylindrical multi-functional digital transfer printing machine according to claim 2, characterized in that, The fixed adjustment device (1) includes a clamping mechanism (11) and a rotary driver (12); The clamping mechanism (11) is used to clamp and fix the printing substrate (100). The rotary driver (12) is connected to the clamping mechanism (11) and is used to drive the printing substrate (100) to rotate.

5. The cylindrical multi-functional digital transfer printing machine according to claim 4, characterized in that, The clamping mechanism (11) includes a clamping fixing seat (111), a clamping adjustment assembly (113), and two clamping plates (112). The two clamping plates (112) are installed parallel to each other on one side of the clamping fixing seat (111); At least one of the clamping plates (112) is connected to the clamping fixing seat (111) via the clamping adjustment assembly (113) in an adjustable clamping displacement manner to adjust the clamping distance between the two clamping plates (112); Both clamping plates (112) have rotatably mounted clamps (1121) on their inner sides that come into contact with and abut against the printing substrate (100). The rotary driver (12) is connected to one of the chucks (1121) and is used to drive the chuck (1121) to rotate.

6. The cylindrical multi-functional digital transfer printing machine according to claim 4, characterized in that, The fixed adjustment device (1) also includes an angle adjustment mechanism (13); The angle adjustment mechanism (13) is connected to the clamping mechanism (11) and is used to adjust the tilt angle of the central axis of the substrate (100) by adjusting the tilt angle of the clamping mechanism (11).

7. The cylindrical multi-functional digital transfer printing machine according to claim 5, characterized in that, The transfer mechanism (61) includes a transfer bracket (611), a transfer roller (612), an unwinding assembly (613), and a rewinding assembly (614). The unwinding assembly (613) is mounted on the transfer holder (611) for releasing the transfer material; The winding assembly (614) is mounted on the transfer holder (611) for winding up the transfer material released from the unwinding assembly (613); The transfer roller (612) is installed on the transfer bracket (611) and located on one side between the winding assembly (614) and the unwinding assembly (613), for pressing the transfer material against the substrate (100). The transfer drive mechanism (62) is mounted on the clamping base (111) or on the fixing frame (72) and is connected to the transfer bracket (611).

8. The cylindrical multi-functional digital transfer printing machine according to claim 1, characterized in that, The transfer device also includes an auxiliary pressure roller (81) and an auxiliary drive mechanism (82). The auxiliary pressure roller (81) is disposed opposite to the transfer mechanism (61) on both sides of the substrate (100); The auxiliary drive mechanism (82) is connected to the auxiliary pressure roller (81) and is used to drive the auxiliary pressure roller (81) to move to abut against the substrate (100).

9. The cylindrical multi-functional digital transfer printing machine according to claim 8, characterized in that, The transfer device also includes a roller (83) and a base drive mechanism (84). The idler roller (83) is positioned below the printing substrate (100); The bottom support drive mechanism (84) is connected to the idler roller (83) and is used to drive the idler roller (83) to move to abut against the printing substrate (100).

10. The cylindrical multi-functional digital transfer printing machine according to claim 1, characterized in that, The printing device also includes a curing lamp driving assembly (9). The curing lamp drive assembly (9) is installed below the fixed adjustment device (1) and connected to the UV curing lamp (5) to drive the UV curing lamp (5) to move along the rotation center line of the substrate (100).

11. The cylindrical multi-functional digital transfer printing machine according to claim 10, characterized in that, The curing lamp drive assembly (9) is also used to drive the UV curing lamp (5) to move closer to or further away from the substrate (100) in the vertical direction.

12. The cylindrical multi-functional digital transfer printing machine according to claim 10, characterized in that, The printhead assembly (4) includes a first varnish printhead assembly (43), a second varnish printhead assembly (44), a third varnish printhead assembly (45), a color ink printhead assembly (42), and a white ink printhead assembly (41). The first varnish nozzle assembly (43), the second varnish nozzle assembly (44), and the third varnish nozzle assembly (45) are distributed sequentially along the rotation center line of the substrate (100); The color ink printhead assembly (42) is disposed on the side of the second varnish printhead assembly (44) away from the third varnish printhead assembly (45); The white ink nozzle assembly (41) is located on the side of the first varnish nozzle assembly (43) away from the second varnish nozzle assembly (44); The first varnish nozzle assembly (43), the second varnish nozzle assembly (44), and the third varnish nozzle assembly (45) are each composed of a row of varnish nozzles, or multiple rows of varnish nozzles arranged side by side.

13. The cylindrical multi-functional digital transfer printing machine according to claim 12, characterized in that, The UV curing lamp (5) includes a first lamp body (51) and a second lamp body (52) with a length greater than that of the first lamp body (51); The first lamp body (51) and the second lamp body (52) are distributed sequentially along the rotation center line of the substrate (100); The second lamp body (52) is connected to the lamp body adjustment assembly; The lamp body adjustment assembly is used to drive the second lamp body (52) to move away from or closer to the first lamp body (51); The second lamp body (52) can, under the drive of the lamp body adjustment component, make its illumination area cover all nozzle orifice areas of the nozzle assembly (4), or not cover some nozzle orifice areas of the nozzle assembly (4); The first lamp body (51) can, under the drive of the curing lamp drive assembly (9), make its illumination area cover part of the nozzle orifice area of ​​the nozzle assembly (4).

14. The cylindrical multi-functional digital transfer printing machine according to claim 13, characterized in that, The second lamp body (52) is able to, under the drive of the lamp body adjustment assembly, ensure that its illumination area does not cover part of the nozzle orifice area of ​​the third varnish nozzle assembly (45).

15. The cylindrical multi-functional digital transfer printing machine according to claim 2, characterized in that, The fixing adjustment device (1) is installed on the substrate driving device (300). The substrate driving device (300) is installed on the fixed platform (71) and is used to drive the fixed adjustment device (1) to move along the rotation center line of the substrate (100). It also includes a vehicle drive assembly (32); The trolley drive assembly (32) is mounted on the fixed frame (72) and connected to the inkjet trolley (2) to drive the inkjet trolley (2) to move in the vertical direction; The transfer device is installed on the substrate driving device (300) and moves together with the fixing and adjusting device (1).

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