A synergistic gold stamping printing control system using a large roller platform printing

Abstract

The utility model discloses a kind of application big drum platform printing's synergistic gold printing control system, including digital control module and with the digital control module electric connection unwinding module, digital printing module, cooling circulation module, winding module, under the instruction of digital control module, the unwinding drum of unwinding module will printing substrate be transported to big drum platform, and make printing substrate adhere in the printing area surface of the big drum platform of digital printing module;The cooling channel of big drum platform is circumferentially arranged around big drum platform axis, cooling channel is connected with cooling circulation module, for inputting cooling fluid to cooling channel, and form closed loop cooling circulation loop to the circulating cooling of printing substrate;And through the winding drum of winding module, the printing substrate of processing completion is wound up. Therefore, improve substrate cooling effect and printing definition, and through system module reasonable layout and design, make each module linkage more coordinated and assembly more compact.

Description

Technical Field

[0001] This utility model relates to the field of hot stamping printing control technology, and in particular to an efficiency-enhancing hot stamping printing control system that uses a large roller platform for printing. Background Technology

[0002] Enhanced hot stamping equipment is an advanced device that integrates digital printing and hot stamping processes. It achieves composite decorative effects such as partial varnishing, 3D embossing, and laser transfer through plateless and intelligent technologies. It typically includes functional units such as unwinding, printing, varnishing, and rewinding. For example, Chinese utility model patent CN221457121U, entitled "A Multi-Process Integrated Digital Printer," includes an unwinding unit, a digital printing unit, a hot stamping unit, and a rewinding unit. The hot stamping unit includes a first digital printing module, a first curing component, and a hot stamping component. The first digital printing module sprays hot stamping ink onto preset positions of the printed image; the first curing component cures the hot stamping ink, increasing its viscosity; and the hot stamping component presses the hot stamping film onto the hot stamping ink.

[0003] However, existing technologies have the following problems: Current hot stamping equipment typically relies solely on subsequent curing processes to cure the printing ink and hot stamping layer, lacking other cooling measures. Because its control system fails to respond to temperature changes in a timely and accurate manner, the cooling process cannot be synchronized with the printing and hot stamping steps, and the timing of cooling cannot be precisely controlled at critical moments in the hot stamping process. This leads to the printing ink and hot stamping layer melting due to excessively high temperatures, resulting in blurred printed text or patterns and affecting the hot stamping printing effect. Alternatively, a separate cooling device is required to cool the substrate, but this increases the overall size and space required, making the assembly less compact, increasing costs, and hindering market promotion. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an efficiency-enhancing hot stamping printing control system that uses a large roller platform for printing.

[0005] The purpose of this utility model is achieved by the following technical solution: an efficiency-enhancing hot stamping printing control system using a large roller platform, comprising a digital control module and an unwinding module, a digital printing module, a cooling circulation module, and a rewinding module electrically connected to the digital control module. The unwinding module has an unwinding roller, and the digital printing module has a large roller platform. Under the instruction of the digital control module, the unwinding roller transports the substrate to the large roller platform and attaches the substrate to the printing area surface of the large roller platform.

[0006] Furthermore, the large roller platform is provided with a cooling channel, which is arranged circumferentially around the axis of the large roller platform. The cooling channel is connected to the cooling circulation module and is used to input cooling fluid into the cooling channel to form a closed-loop cooling circulation loop for circulating cooling of the printing substrate.

[0007] Furthermore, the winding module has a winding roller, and the processed printing substrate is wound up by the winding roller.

[0008] Furthermore, a first flow channel and a second flow channel are respectively provided at both ends of the large roller platform. The first flow channel and the second flow channel are respectively arranged to extend radially outward from the axis at both ends of the large roller platform, and their ends are connected to the cooling channel.

[0009] The first and second flow channels are also connected to the cooling circulation module. The first flow channel is used to transport the cooling fluid of the cooling circulation module to the cooling channel, and the second flow channel is used to transport the cooling fluid of the cooling channel to the return port of the cooling circulation module.

[0010] Furthermore, both the first and second guide channels are provided with a plurality of channels, and the plurality of channels extend radially outward from the two ends of the large roller platform and are distributed in a star-shaped or planar structure.

[0011] Furthermore, fluid input pipes and fluid output pipes are respectively provided at both ends of the large roller platform;

[0012] One end of the fluid input pipe is connected to the output port of the cooling circulation module, and the other end is connected to the first flow guide channel, for inputting cooling fluid into the first flow guide channel;

[0013] One end of the fluid output pipe is connected to the second flow guide channel, and the other end is connected to the return port of the cooling circulation module, which is used to transport the fluid after heat exchange in the cooling channel back to the cooling circulation module for recooling.

[0014] Furthermore, the diameter of the large roller platform ranges from 500mm to 2000mm, and the width ranges from 300mm to 1500mm; the radial width of the cooling channel is 1 / 4 to 1 / 6 of the diameter of the large roller platform.

[0015] Furthermore, the digital printing module also has a printing structure, with a plurality of printing nozzles arranged at the bottom of the printing structure; the projected area of ​​the plurality of printing nozzles on the large roller platform is 1 / 10 to 1 / 4 of the surface area of ​​the large roller platform.

[0016] Furthermore, when the digital printing module receives instructions from the digital control module and drives the printing structure into the printing area of ​​the large roller platform, and the printing nozzles are arranged to be parallel to the printing area of ​​the large roller platform, the printing nozzles perform inkjet printing on the substrate on the printing area at approximately equal inkjet distances.

[0017] Furthermore, the efficiency-enhancing hot stamping printing control system also includes a hot stamping module, which is electrically connected to the digital control module; the hot stamping module has a film feeding roller, a hot stamping pressure roller, and a film taking-up roller, the hot stamping pressure roller is disposed on one side of the large roller platform and forms a hot stamping pressure area with the surface of the large roller platform;

[0018] The film feeding roller is used to transport the hot stamping film to the hot stamping pressing area formed by the hot stamping pressure roller and the large roller platform. The hot stamping film coating is transferred by cold or hot stamping through the rolling action of the hot stamping pressure roller and the large roller platform onto the substrate that is simultaneously transported to the hot stamping pressing area. The film taking-up roller is used to take up the hot stamping film after the hot stamping transfer is completed.

[0019] Furthermore, the efficiency-enhancing hot stamping printing control system also includes a curing module, which is electrically connected to the digital control module. The curing module has several UV curing lamps, which are arranged in the post-process of the hot stamping roller and around the surface of the large roller platform. UV light is used to cure the printing layer and hot stamping coating on the substrate.

[0020] Furthermore, the efficiency-enhancing hot foil stamping control system also includes a correction module and an image inspection module. The correction module and the image inspection module are electrically connected to the digital control module. The image inspection module is electrically connected to the correction module. The correction module is set in the process after the unwinding module, and the image inspection module is set in the process before the rewinding module.

[0021] Under the command of the digital control module, the correction module corrects the printing substrate released by the unwinding module in real time, and collects the offset information of the processed printing substrate through the image inspection module, and feeds the offset information back to the digital control module. The digital control module controls the correction module to perform offset correction in real time according to the offset information.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] (1) In this embodiment, a digital printing module and a cooling circulation module are integrated on the machine body. The digital printing module is equipped with a large roller platform 302, and a cooling channel 3022 is provided in the wall of the large roller platform 302. The cooling channel 3022 is connected to the cooling circulation module and is used to input cooling fluid into the cooling channel 3022. The cooling fluid circulates and absorbs the heat of the large roller platform 302 (such as heat from the environment or the printing process) in the cooling channel 3022, thereby indirectly cooling the substrate 90 attached to the platform, preventing the hot stamping ink from melting, spreading or increasing its fluidity due to excessive temperature, and ensuring that the printed pattern is clear.

[0024] Furthermore, the circulating cooling method improves energy efficiency and reduces thermal deformation. This solves the problem of blurred printing caused by melting hot stamping ink due to the lack of cooling measures in traditional printing and hot stamping processes. It achieves timely and accurate cooling during printing and hot stamping, precisely controlling the temperature of the substrate, its printing layer, and the hot stamping layer. This improves the clarity and durability of printed text or patterns, enhances overall printing quality and product consistency, prevents material deformation due to excessive temperature, and is suitable for a wide range of materials. It also boasts high cooling efficiency, is energy-saving and environmentally friendly, and addresses the issues of large size, non-compact structure, and high production costs associated with requiring independent cooling devices.

[0025] (2) By opening a first guide channel and a second guide channel at each end of the large roller platform, the radially distributed guide channels ensure that the cooling fluid flows uniformly from the axis to the circumference of the large roller platform, avoiding cooling dead zones, improving heat exchange efficiency, and controlling fluid flow. The cooling fluid's path from input to output is optimized, ensuring normal fluid circulation pressure in the platform's cooling channels. This achieves uniform cooling of the large roller platform, prevents local overheating of the substrate, and further improves printing and hot stamping quality. Attached Figure Description

[0026] Figure 1 This is a block diagram of the control module in a preferred embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram showing the cooling channel after the large roller platform is cut open in a preferred embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a preferred embodiment of the present invention, showing the first and second flow channels arranged in a star-shaped distribution at the end of the large drum platform.

[0029] Figure 4 This is a schematic diagram of the preferred embodiment of the present invention, showing the first and second flow guiding channels distributed in a planar manner at the end of the large drum platform.

[0030] Figure 5This is a schematic diagram of the workflow of the enhanced hot stamping printing control system in a preferred embodiment of this utility model.

[0031] In the picture:

[0032] 10. Body;

[0033] 20. Unwinding module; 201. Unwinding roller;

[0034] 30. Digital printing module; 301. Printing structure; 3011. Print head; 302. Large roller platform; 3021. Printing area; 3022. Cooling channel; 3023. First flow channel; 3024. Second flow channel; 31. Fluid input pipe; 32. Fluid output pipe;

[0035] 40. Hot stamping module; 401. Film feeding roller; 402. Hot stamping pressure roller; 403. Film taking-up roller;

[0036] 50. Curing module; 501. UV curing lamp;

[0037] 60. Rewinding module; 601. Rewinding roller;

[0038] 70. Digital control module; 71. Cooling circulation module; 72. Correction module; 73. Image inspection module;

[0039] 80. Traction pressure roller; 81. Paper feed roller;

[0040] 90. Printing substrate; 91. Hot stamping film. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0042] like Figure 1-5 As shown, an efficiency-enhancing hot stamping printing control system using a large roller platform printer includes a machine body 10 and a digital control module 70, an unwinding module 20, a digital printing module 30, and a rewinding module 60 mounted on the machine body 10. The unwinding module 20, digital printing module 30, cooling circulation module 71, and rewinding module 60 are all electrically connected to the digital control module. The machine body 10 has an unwinding station, a printing station, and a rewinding station arranged sequentially along the processing direction of the substrate 90 (such as roll paper, roll film, etc.). The unwinding module 20 is located at the unwinding station, the digital printing module 30 at the printing station, and the rewinding module 60 at the rewinding station. The cooling circulation module 71 is used for fluid cooling. The cooling circulation module 71 needs to be connected to an external fluid source for fluid cooling. The cooling circulation module 71 can be either externally mounted or installed on the machine body 10.

[0043] The unwinding module 20 includes an unwinding roller 201, and the digital printing module 30 includes a printing structure 301 and a large roller platform 302. In this embodiment, the large roller platform 302 is a cylindrical structure, and its diameter is set according to actual usage requirements. Several printheads 3011 are provided at the bottom of the printing structure 301. The printheads 3011 can be piezoelectric or thermal inkjet printheads, etc. Several guide rollers are provided between the unwinding roller 201 and the large roller platform 302. Under the command of the digital control module 70, the substrate 90 is drawn out from the unwinding roller 201, guided by the guide rollers, and conveyed to the digital printing module 30 under preset tension by the rewinding module, ensuring that the substrate 90 entering the printing station is completely attached to the surface of the large roller platform 302.

[0044] In this embodiment, the large roller platform 302 adopts a large-diameter design (e.g., 500mm or more, with a maximum diameter of up to 2000mm). Its relatively small surface area compared to the printhead 3011 allows it to form a nearly horizontal printing area 3021. Furthermore, the printing area 3021 is arranged circumferentially along the surface of the large roller platform 302. When the substrate 90 is transported from the unwinding roller 201 to the large roller platform 302, the substrate 90 can be completely adhered to the surface of the printing area 3021 through tension control by the unwinding module 20 and / or the rewinding module 60, facilitating the transport and digital printing operation of the substrate 90 on the surface of the large roller platform 302.

[0045] Under the instruction of the digital control module 70, the printing structure 301 can be positioned within the printing area of ​​the large roller platform 302 by a moving mechanism (such as a guide rail or a lead screw mechanism). According to the large diameter design of the large roller platform 302, the printing area 3021 on its surface is arranged parallel to several printing nozzles 3011.

[0046] Therefore, when the printing structure 301 moves to the printing area of ​​the large roller platform 302 via the guide rail or lead screw mechanism, several printing nozzles 3011 can perform precise inkjet printing on the substrate 90 on the printing area 3021 with approximately equal inkjet distances.

[0047] Therefore, by setting a large-diameter roller platform 302 to replace the traditional method of tensioning and suspending the substrate 90 with rollers, a continuous and stable rigid support surface is provided for the substrate 90 when it enters the printing station. Furthermore, the large-diameter roller platform 302, relative to the relatively small cross-sectional area of ​​the printheads 3011, forms a printing area 3021 that tends to be planar, thus making the printheads 3011 and the printing area 3021 nearly parallel. By ensuring the substrate 90 is completely attached to the printing area 3021, vibration caused by central suspension is avoided. And by coordinating the printheads 3011 to spray ink onto the substrate 90 on the printing area 3021 at nearly equal ink jet distances, print quality is significantly improved, bending stress on the substrate 90 is reduced, edge warping is prevented, and the printheads 3011 are protected from scratches.

[0048] The winding module 60 includes a winding roller 601. Several guide rollers are also provided between the winding roller 601 and the printing, hot stamping, and curing modules. Under the command of the digital control module 70, the cured substrate 90 is conveyed to the winding roller 601 with the assistance of the guide rollers. The winding roller 601, driven by a motor, winds up the printed, hot stamped, and cured substrate 90 at a constant tension. In this embodiment, the unwinding module 20 and the winding module 60 can be closed-loop controlled using a servo motor and a tension sensor.

[0049] More specifically, the width of the printing area 3021 matches the axial length of the large roller platform 302, that is, the width of the printing area 3021 is less than or equal to the height of the large roller platform 302. Several printheads 3011 are detachably installed at the bottom of the printing structure 301 for easy cleaning, maintenance and replacement. Multiple rows (e.g., 2-5 rows) are arranged horizontally at the bottom of the printing structure 301. The several rows of printheads are arranged circumferentially on the surface of the large roller platform (however, due to the processing characteristics of inkjet printing, printheads are usually not arranged below the bottom of the large roller platform; in actual implementation, the printheads are arranged at positions forming angles of 30°, 45°, 60° or 90° with the horizontal plane of the large roller platform). Each row of printheads 3011 has several (e.g., 3-8) arranged axially along the large roller platform 302, thus forming a matrix arrangement of printheads 3011. The printhead 3011 array design is aligned and installed with the printing area 3021 of the large roller platform 302. Therefore, based on the design concept of setting several rows of printheads around the circumference of the large roller platform surface, the several rows of printheads can be divided into several groups around the circumference of the large roller platform surface, and each group of printheads can perform printing tasks simultaneously or independently.

[0050] During inkjet printing, multiple rows of printheads 3011 are synchronously controlled to enter the printing area 3021 of the large roller platform 302, ensuring that the inkjet printing direction is perpendicular to the surface of the substrate 90.

[0051] Therefore, by having multiple rows of printheads 3011 working simultaneously, staggered or parallel inkjet printing improves printing efficiency and coverage uniformity. Furthermore, the horizontal arrangement of the printheads 3011 avoids inkjet misalignment caused by angular deviations. Combined with the rotational motion of the large roller platform 302, continuous or step-by-step printing is achieved. This enables high-speed and high-precision printing, reduces printing time, improves production efficiency, and ensures clear and complete printing of patterns or text.

[0052] In this embodiment, a cooling channel 3022 is provided inside the large roller platform 302. The cooling channel 3022 is arranged circumferentially around the axis of the large roller platform 302 (a spiral or annular channel can be selected). One end of the large roller platform 302 is connected to the fluid input pipe 31 via a rotary joint, and the other end is connected to the fluid output pipe 32 via a rotary joint. By embedding the cooling channel 3022 inside the wall of the large roller platform 302, and connecting the fluid input pipe 31 and the output pipe to both ends of the platform via rotary joints, interference with the platform rotation is avoided.

[0053] Fluid inlet pipe 31 is connected to cooling channel 3022 for inputting cooling fluid (such as chilled water, coolant, or cooling gas); fluid outlet pipe 32 is connected to cooling channel 3022 for outputting cooling fluid. The inlet end of fluid inlet pipe 31 is connected to cooling circulation module 71, which may include a refrigeration unit or heat exchanger for fluid cooling, and a circulation pump to power the fluid circulation. The outlet end of fluid outlet pipe 32 is connected to the return port of cooling circulation module 71, forming a closed-loop cooling circulation circuit, allowing the heat-exchanged fluid to return to cooling circulation module 71 for recooling and reuse. Cooling circulation module 71 may integrate a temperature sensor and controller to adjust fluid flow and temperature based on real-time temperature.

[0054] Therefore, this embodiment integrates a digital printing module 30 and a cooling circulation module 71 on the machine body. The digital printing module 30 is equipped with a large roller platform 302, and a cooling channel 3022 is provided inside the wall of the large roller platform 302. The cooling channel 3022 is connected to the cooling circulation module and is used to input cooling fluid into the cooling channel 3022. The cooling fluid circulates and absorbs the heat of the large roller platform 302 (such as heat from the environment or the printing process) within the cooling channel 3022, thereby indirectly cooling the substrate 90 attached to the platform. This prevents the hot stamping ink from melting, spreading, or becoming more fluid due to excessive temperature, ensuring clear printed patterns. Moreover, the circulating cooling method improves energy efficiency and reduces thermal deformation. This solves the problem of blurred printing caused by the melting of hot stamping ink due to the lack of cooling measures in traditional printing and hot stamping processes. It enables timely and accurate cooling during printing and hot stamping, precisely controlling the temperature of the substrate, the printing layer, and the hot stamping layer. This improves the clarity and durability of printed text or patterns, enhances overall printing quality and product consistency, prevents material deformation due to excessive temperature, and is applicable to a wide range of materials. It also boasts high cooling efficiency, is energy-saving and environmentally friendly, and solves the problems of large size, non-compact structure, and high production costs associated with requiring independent cooling devices.

[0055] Further description of the cooling channel 3022 of the large roller platform 302: a first guide channel 3023 and a second guide channel 3024 are respectively opened inside both ends of the large roller platform 302. The first guide channel 3023 and the second guide channel 3024 are respectively arranged to extend radially outward from the axis at both ends of the large roller platform 302.

[0056] Both the first guide channel 3023 and the second guide channel 3024 are provided with multiple channels. These multiple channels extend radially from the axial centers at both ends of the large roller platform 302, forming a star-shaped or planar distribution structure. When the guide channels are designed in a star-shaped distribution structure, it is easier to control the flow rate of the cooling fluid, suitable for processing requirements where the cooling speed is not high, such as… Figure 3 As shown; or, the flow channel can be designed as a planar distribution structure, which does not have high requirements for the flow control of the cooling fluid and is suitable for processing needs requiring rapid cooling, such as... Figure 4 As shown.

[0057] The first flow guide channel 3023 and the second flow guide channel 3024 have through holes at one end (end) near the outer wall of the large roller platform 302 and are connected to the cooling channel 3022. The first flow guide channel 3023 and the second flow guide channel 3024 serve as cooling fluid distribution and collection structures, integrated with the cooling channel 3022 inside the platform, and leaks are prevented by sealing rings. In practical use, the number and shape of the flow guide channels can be optimized, for example, by adding guide plates or adopting a multi-stage flow guide design to improve fluid distribution.

[0058] The other end of the first guide channel 3023 is connected to the output end of the fluid input pipe 31, and the input end of the fluid input pipe 31 is connected to the output port of the cooling circulation module 71. This channel is used to evenly distribute the cooling fluid radially along the end of the large drum platform 302 to the cooling channel 3022. The other end of the second guide channel 3024 is connected to the input end of the fluid output pipe 32, and the output end of the fluid output pipe 32 is connected to the return port of the cooling circulation module 71. This channel is used to collect the heat-exchanged fluid in the cooling channel 3022 radially along the large drum platform 302 to the fluid output pipe 32, and then transport it back to the cooling circulation module 71.

[0059] Therefore, by opening a first guide channel 3023 and a second guide channel 3024 at each end of the large roller platform 302, the radially distributed guide channels ensure that the cooling fluid flows uniformly from the axis to the circumference of the large roller platform 302, avoiding cooling dead zones, improving heat exchange efficiency, and controlling fluid flow. The optimized path of the cooling fluid from input to output ensures normal circulating pressure of the cooling fluid within the cooling channel 3022 of the platform. This achieves uniform cooling of the large roller platform 302, prevents localized overheating of the substrate 90, and further improves printing and hot stamping quality.

[0060] The large roller platform 302 provided in this embodiment is fixed to the machine body 10 by a bearing seat. The diameter of the large roller platform 302 ranges from 500mm to 2000mm, and the width ranges from 300mm to 1500mm (referring to the axial length of the platform). Preferably, the diameter is 600mm and the width is 400mm. In actual use, the diameter and width of the large roller platform 302 can be adjusted according to the width of the substrate 90 and the equipment layout. For example, for wide materials, the diameter can be increased to provide a larger printing area 3021.

[0061] In this embodiment, the radial width of the cooling channel 3022 is 1 / 4 to 1 / 6 of the diameter of the large roller platform (for example, for a platform with a diameter of 600 mm, when the ratio is 1 / 5, the radial width of the cooling channel is 120 mm). Thus, by designing the radial width of the cooling channel 3022 proportionally according to the diameter of the large roller platform, the processing cooling requirements of printing substrates 90 with different areas and thicknesses are ensured.

[0062] The projected area of ​​several rows of printheads 3011 is less than or equal to the printing area 3021 of the large roller platform 302. Therefore, the rectangular area of ​​the projected area of ​​several rows of printheads 3011 on the large roller platform 302 is 1 / 10 to 1 / 4 of the surface area of ​​the large roller platform 302 (for example, for a platform with a diameter of 600 mm and a width of 400 mm, the projected area is approximately 0.07 m² to 0.2 m²).

[0063] Therefore, by optimizing the size of the large roller platform 302 and the coverage area of ​​the print head 3011, the overall equipment size is reduced while ensuring that the printing area 3021 of the large roller platform is large enough and tends to be flatter.

[0064] For example, practical implementation and experimental results show that when the diameter of the large roller platform is designed to be 600mm and the width to be 400mm, and the cross-sectional area of ​​the orthographic projection of several printheads on the printing area is 0.1㎡, the inkjet distance error between the printheads and the substrate on the printing area is minimized (the smaller the inkjet distance error, the more parallel the printheads are to the printing area of ​​the large roller platform). This achieves better printing efficiency and quality, lower defect rate, and avoids resource waste. Thus, while maintaining high-efficiency and high-quality printing, the overall equipment volume and space utilization are optimized, making it suitable for various spaces with limited space. It also improves the coordination between the large roller platform and its surrounding functional modules, lowers equipment manufacturing costs, and achieves better market promotion benefits.

[0065] The hot stamping printing equipment of this embodiment also has a hot stamping station on its body 10, located after the printing station (along the process direction of the substrate 90). The hot stamping station is equipped with a hot stamping module 40, which includes at least a film feeding roller 401, a hot stamping pressure roller 402, and a film take-up roller 403. The film feeding roller 401, hot stamping pressure roller 402, and take-up roller 403 are all mounted inside the body 10 via brackets. The hot stamping pressure roller 402 is parallel to and aligned with the surface of the large roller platform 302, and is located on the side of the large roller platform 302 facing the hot stamping station, forming a hot stamping pressure area with the surface of the large roller platform 302.

[0066] The film feeding roller 401 and the film take-up roller 403 can be arranged on the same side of the hot stamping pressure roller 402 and are arranged side by side, maintaining the flatness of the hot stamping film 91 through a tension control system. Under the instruction of the digital control module 70, the film feeding roller 401 is used to convey the hot stamping film 91 (such as PET substrate hot stamping film 91) to the hot stamping pressure area formed by the hot stamping pressure roller 402 and the large roller platform 302. Through the rolling action (pressure adjustable) of the hot stamping pressure roller 402 and the large roller platform 302, the coating of the hot stamping film 91 is transferred by cold stamping or hot stamping onto the substrate 90 that is simultaneously conveyed to the hot stamping pressure area. The film take-up roller 403 is used to wind up the hot stamping film 91 substrate after the hot stamping transfer is completed. In addition, after hot stamping is completed, the substrate 90 is output from the platform by the traction pressure roller 80 and conveyed to the winding module 60 through multiple paper feed rollers 81.

[0067] In practical use, users can choose between cold or hot foil stamping. Therefore, the foil stamping roller 402 can be equipped with a heating device (such as an infrared heater) for hot foil stamping, or the foil stamping roller 402 at room temperature can be used for cold foil stamping.

[0068] Therefore, by integrating a hot stamping module 40 into the machine body 10, the rigid support of the large roller platform 302 and the application of uniform pressure by the hot stamping pressure roller 402 cause the hot stamping film 91 coating to peel off and transfer onto the substrate 90. Furthermore, the rotation of the large roller platform 302 synchronously drives the substrate 90 and the hot stamping film 91, ensuring registration accuracy (i.e., the alignment accuracy between the printed layer of the substrate and the hot stamping film coating). This achieves efficient and high-quality hot stamping transfer, seamlessly integrating with the printing system, reducing process intervals, and improving overall production efficiency.

[0069] The body 10 of this efficiency-enhancing hot stamping printing equipment also includes a curing station located after the hot stamping station. The curing station is equipped with a curing module 50, which includes several UV curing lamps 501 (such as mercury lamps or LED UV lamps). The UV curing lamps 501 are fixed to the body 10 by lamp holders, and the irradiation direction is aimed at the printing substrate 90 on the platform surface. Moreover, the lamp holders are adjustable in angle and distance.

[0070] The UV curing lamp 501 is located after the hot stamping roller 402 and is arranged around the surface of the large roller platform 302 (e.g., evenly distributed along the circumference of the platform) along with other functional modules such as the hot stamping roller 402. Under the command of the digital control module 70, the UV curing lamp 501 is used to perform UV curing treatment on the printing substrate 90 for hot stamping, printing layer, and hot stamping coating. Therefore, the large roller platform 302, as a core component, integrates multiple workstations, which not only improves the compactness of the equipment structure and shortens the paper path, but also provides fast registration response, high precision, and material savings. The arrangement of various functional modules around the large roller platform 302 ensures stable tension and is suitable for printing substrates 90 of different materials.

[0071] Therefore, by integrating a curing module 50 into the body 10, UV light is used to trigger the photoinitiator of the ink and coating, initiating a polymerization reaction that allows the printed layer and hot stamping coating to cure rapidly, forming a wear-resistant and weather-resistant film. Furthermore, the surrounding arrangement of UV curing lamps 501 ensures uniform curing without shadows. This ensures rapid curing of the printed layer and hot stamping layer, preventing blurring or peeling caused by incomplete curing, improving product durability and appearance quality, and enhancing market competitiveness.

[0072] This embodiment of the enhanced hot stamping printing control system also integrates a web correction module 72 and an image inspection module 73. The web correction module 72 and the image inspection module 73 are electrically connected to the digital control module 70, and the image inspection module 73 is electrically connected to the web correction module 72. The web correction module 72 is located after the unwinding module 20 and includes at least a web correction roller and a web correction plate; specific details can be found in existing technology and are not limited here. The image inspection module 73 is located before the rewinding module 60 and includes at least a camera and a dedicated computer system.

[0073] Under the command of the digital control module 70, the correction module 72 corrects the substrate released by the unwinding module in real time. It also captures photos or videos using the camera of the image inspection module 73 to collect information on the misalignment of the finished substrate. This misalignment information is then fed back to the digital control module 70. The digital control module 70 compares and analyzes the misalignment information with pre-stored reference information, and then sends commands in real time to control the correction module 72 to correct the misalignment of the current substrate. This improves the accuracy of substrate transport, printing, and hot stamping.

[0074] The digital printing module 30, hot stamping module 40, and curing module 50 provided in this embodiment are modularly integrated on the body 10 to form independent unit modules (e.g., each module includes a large roller platform 302, a printing structure 301, a hot stamping component, and a curing component). These unit modules can be added or removed along the process direction of the substrate 90 (e.g., by bolt connection or sliding installation on guide rails) to adapt to different production volumes and functional requirements.

[0075] When assembling unit modules on the machine body, users can choose to assemble unit modules for hot stamping and unit modules for varnishing on one machine, thereby realizing printing, hot stamping and varnishing of substrates on one machine, further improving production efficiency.

[0076] In practical use, each system module of each unit module is connected to the main body 10 through a standard interface. For example, quick connectors are used for the installation of electrical control lines and fluid pipelines. Each system module is coordinated through a synchronous control system, and the modules share power and control systems, reducing duplicate parts and achieving the purpose of quick assembly and disassembly of unit modules and applications.

[0077] Therefore, by modularly integrating at least a digital printing module 30, a hot stamping module 40, and a curing module 50 into the body 10, users can flexibly configure the equipment according to production volume and functional requirements. For example, a single module can be used for small-batch production, while multiple modules can be connected in series for large-batch production. This solves the problem of insufficient integration in high-efficiency hot stamping printing equipment, making the overall structure of the equipment more compact, improving the coordination between functional modules, reducing the overall body size and floor space, and simultaneously improving the equipment's scalability and ease of maintenance.

[0078] The overall working process of the enhanced hot foil printing control system in this embodiment is as follows:

[0079] (1) Unwinding: At the unwinding station of the machine body 10, the unwinding module 20 uses the unwinding roller 201 to transport the printing substrate 90 to the printing station along the process direction with a preset tension.

[0080] (2) Printing: At the printing station, the digital printing module 30 receives the substrate 90 from the conveyed roller platform 302. The substrate 90 is attached to the printing area 3021 on the surface of the roller platform 302 by tension or other means. The printing structure 301 moves to the printing area of ​​the roller platform 302, so that the print head 3011 and the printing area 3021 are arranged to be parallel, so that multiple rows of print heads 3011 can perform inkjet printing on the substrate 90 at equal inkjet distances. In actual use, a correction, dust removal and corona treatment process is also set between unwinding and printing to adjust the position of the substrate 90, remove dust and enhance adhesion.

[0081] Meanwhile, a cooling channel 3022 is also provided in the wall of the large roller platform 302, which is circumferentially arranged around the axis and connected to a cooling circulation module. This module is used to input cooling fluid to circulate and cool the printing substrate 90 during processing, preventing the ink from melting.

[0082] (3) Hot stamping: At the hot stamping station, the hot stamping module 40 conveys the hot stamping film 91 to the hot stamping pressing area formed by the hot stamping pressure roller 402 and the large roller platform 302 via the film feeding roller 401. The printed substrate 90 is conveyed to the hot stamping pressing area as the platform rotates, and the coating of the hot stamping film 91 is transferred to the substrate 90 by cold or hot stamping using the rolling action. The film take-up roller 403 of the hot stamping module 40 is used to take up the hot stamping film 91 after it has been peeled off.

[0083] (4) Curing: At the curing station, the curing module 50 uses several UV curing lamps 501 to emit UV light to cure the printing layer and hot stamping coating on the substrate 90 to form a durable surface.

[0084] (5) Rewinding: At the rewinding station, the rewinding module 60 uses a rewinding roller 601 to rewind the printed, hot stamping, and cured substrate 90 with a preset tension. In actual use, an image inspection process is also set between the curing and rewinding processes. The image inspection module 73 (such as a CCD camera) takes pictures of whether there is any offset or defect in the printed and hot stamping layers on the substrate. This can be observed intuitively on the computer operating system, or the image can be printed out for observation.

[0085] Therefore, the large roller platform 302 provides stable support, integrating multiple processes into one unit, all working collaboratively around the large roller platform 302. Utilizing circulating cooling and modular design, the entire process is automated and controlled by a digital control module 70 (such as a PLC or industrial computer). The digital control module 70 ensures synchronization and coordination of each process, achieving precise adjustment of tension, temperature, and speed, and can adapt to various printing substrates 90 and hot stamping film types 91. This solves the problems of paper shaking, ink melting, and non-compact structure, improves the accuracy and quality of printing, hot stamping, and curing, reduces material waste and equipment footprint, and achieves efficient and high-quality production.

[0086] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An efficiency-enhancing hot stamping printing control system using a large roller platform printer, characterized in that, It includes a digital control module and an unwinding module, a digital printing module, a cooling circulation module, and a rewinding module electrically connected to the digital control module. The unwinding module has an unwinding roller, and the digital printing module has a large roller platform. Under the command of the digital control module, the unwinding roller transports the substrate to the large roller platform and attaches the substrate to the printing area surface of the large roller platform. Furthermore, the large roller platform is provided with a cooling channel, which is arranged circumferentially around the axis of the large roller platform. The cooling channel is connected to the cooling circulation module and is used to input cooling fluid into the cooling channel to form a closed-loop cooling circulation loop for circulating cooling of the printing substrate. Furthermore, the winding module has a winding roller, and the processed printing substrate is wound up by the winding roller.

2. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 1, characterized in that, The large roller platform has a first flow channel and a second flow channel respectively at both ends. The first flow channel and the second flow channel extend radially outward from the axis at both ends of the large roller platform and are connected to the cooling channel at their ends. The first and second flow channels are also connected to the cooling circulation module. The first flow channel is used to transport the cooling fluid of the cooling circulation module to the cooling channel, and the second flow channel is used to transport the cooling fluid of the cooling channel to the return port of the cooling circulation module.

3. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 2, characterized in that, The first and second guide channels are provided with several of each. The several first and second guide channels extend radially from the two ends of the large roller platform and are distributed in a star-shaped or planar structure.

4. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 2, characterized in that, The large roller platform is respectively provided with a fluid input pipe and a fluid output pipe at both ends; One end of the fluid input pipe is connected to the output port of the cooling circulation module, and the other end is connected to the first flow guide channel, for inputting cooling fluid into the first flow guide channel; One end of the fluid output pipe is connected to the second flow guide channel, and the other end is connected to the return port of the cooling circulation module, which is used to transport the fluid after heat exchange in the cooling channel back to the cooling circulation module for recooling.

5. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 1, characterized in that, The diameter of the large roller platform ranges from 500mm to 2000mm, and the width ranges from 300mm to 1500mm; the radial width of the cooling channel is 1 / 4 to 1 / 6 of the diameter of the large roller platform.

6. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 5, characterized in that, The digital printing module also has a printing structure, with a plurality of printing nozzles at the bottom of the printing structure; the projected area of ​​the plurality of printing nozzles on the large roller platform is 1 / 10 to 1 / 4 of the surface area of ​​the large roller platform.

7. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 6, characterized in that, The digital printing module receives instructions from the digital control module and drives the printing structure into the printing area of ​​the large roller platform. When the printheads are arranged parallel to the printing area of ​​the large roller platform, the printheads perform inkjet printing on the substrate in the printing area at approximately equal inkjet distances.

8. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in any one of claims 1-7, characterized in that, It also includes a hot stamping module, which is electrically connected to the digital control module; the hot stamping module has a film feeding roller, a hot stamping pressure roller and a film taking-up roller, the hot stamping pressure roller is disposed on one side of the large roller platform and forms a hot stamping pressing area with the surface of the large roller platform; The film feeding roller is used to transport the hot stamping film to the hot stamping pressing area formed by the hot stamping pressure roller and the large roller platform. The hot stamping film coating is transferred by cold or hot stamping through the rolling action of the hot stamping pressure roller and the large roller platform onto the substrate that is simultaneously transported to the hot stamping pressing area. The film taking-up roller is used to take up the hot stamping film after the hot stamping transfer is completed.

9. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in claim 8, characterized in that, It also includes a curing module, which is electrically connected to the digital control module; the curing module has several UV curing lamps, which are arranged in the post-process of the hot stamping roller and around the surface of the large roller platform, and use UV light to cure the printing layer and hot stamping coating on the substrate.

10. The efficiency-enhancing hot stamping printing control system using a large roller platform as described in any one of claims 1-7, characterized in that, It also includes a correction module and an image inspection module. The correction module and the image inspection module are electrically connected to the digital control module. The image inspection module is electrically connected to the correction module. The correction module is set in the process after the unwinding module, and the image inspection module is set in the process before the winding module. Under the command of the digital control module, the correction module corrects the printing substrate released by the unwinding module in real time, and collects the offset information of the processed printing substrate through the image inspection module, and feeds the offset information back to the digital control module. The digital control module controls the correction module to perform offset correction in real time according to the offset information.

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