Liquid supplementing device of photocuring printer

Abstract

The embodiment of the utility model provides a liquid supplementing device of a photocuring printer. The liquid supplementing device comprises a liquid storage tank; the conveying pipeline is connected between the liquid storage tank and the printing head; the flow guide plate is arranged in the liquid storage tank and guides the liquid to flow into the conveying pipeline; one end of the exhaust pipe is connected to the top of the liquid storage tank, and the other end of the exhaust pipe leads to the outside and is used for exhausting air in the liquid storage tank; the filter is arranged in the conveying pipeline and is used for filtering impurities in the liquid; wherein the flow guide plate has an inclination angle, a plurality of micro grooves are formed in the surface of the flow guide plate and used for guiding bubbles to rise and reducing gas accumulation, and the flow guide plate is further provided with a splash-proof plate; and a plurality of layers of flow guide plates are arranged in the liquid storage tank, and the angles of the flow guide plates are gradually increased, so that the liquid is guided to accelerate layer by layer, and bubbles are further reduced. Through the scheme of the embodiment of the invention, the problem of how to design the internal structure of the container to enable liquid to flow more smoothly and reduce bubbles can be solved.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, specifically to a liquid replenishment device for a photopolymer printer. Background Technology

[0002] A photopolymer printer refill system is a device specifically designed for photopolymer 3D printing technology. It replenishes photosensitive resin to the resin tank during the printing process to ensure a continuous supply of printing material and the stability of the printing process. However, this type of refill system faces a significant challenge: how to design the internal structure of the container to facilitate smoother liquid flow and reduce air bubble formation. Since photosensitive resin is prone to air bubble formation during transport, these bubbles can affect the quality of the final product, leading to decreased printing accuracy or increased surface defects. This problem is exacerbated by poor liquid flow, especially in complex printing tasks. Therefore, optimizing the internal structure of the container is a crucial consideration for improving the performance and printing results of photopolymer printers. Summary of the Invention

[0003] In view of this, the present disclosure provides a liquid replenishment device for a photopolymer printer, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a liquid replenishment device for a photopolymer printer, comprising:

[0005] Liquid storage tanks are used to store liquid materials to be printed.

[0006] The delivery pipe connects the liquid storage tank and the print head, delivering the liquid from the liquid storage tank to the print head;

[0007] A flow guide plate is installed inside the liquid storage tank to guide the liquid into the delivery pipeline.

[0008] The exhaust pipe is connected to the top of the liquid storage tank at one end and leads to the outside at the other end, and is used to expel the air inside the liquid storage tank.

[0009] A filter, installed inside the delivery pipeline, is used to filter impurities from the liquid;

[0010] The flow guide plate has an inclined angle and multiple microgrooves on its surface to guide bubbles upward and reduce gas accumulation. Furthermore, the flow guide plate is equipped with a splash guard.

[0011] The liquid storage tank is equipped with multiple layers of flow guide plates. The angle of each layer of flow guide plates gradually increases, guiding the liquid to accelerate layer by layer and further reducing the generation of bubbles.

[0012] In one specific embodiment, the bottom of the liquid storage tank adopts a gradually narrowing wedge-shaped structure.

[0013] In one specific embodiment, the bottom of the liquid storage tank is provided with a flow guide cone, and the flow guide cone is provided with support ribs.

[0014] In one specific embodiment, a sealing cap is provided on the top of the liquid storage tank for sealing the liquid filling port of the liquid storage tank.

[0015] In one specific embodiment, the conveying pipeline includes multiple segmented pipelines, and flexible joints are provided at the connection points to allow the segments to move relative to each other.

[0016] In one specific embodiment, the conveying pipe is provided with spiral blades.

[0017] In one specific embodiment, the splash guard is located above the flow guide plate and is provided with vent holes.

[0018] In one specific embodiment, the inner wall of the exhaust pipe is provided with sound-absorbing cotton.

[0019] In one specific embodiment, the filter employs a multi-layer filter design, with a coarse filter layer on top and a fine filter layer on the bottom.

[0020] In one specific embodiment, a flow sensor is provided below the filter.

[0021] This disclosure provides a liquid replenishment device for a photopolymer printer, comprising: a liquid storage tank for storing liquid material to be printed; a delivery pipe connected between the liquid storage tank and the print head for delivering liquid from the liquid storage tank to the print head; a flow guide plate disposed inside the liquid storage tank to guide the liquid into the delivery pipe; an exhaust pipe connected at one end to the top of the liquid storage tank and at the other end to the outside for discharging air from the liquid storage tank; and a filter disposed inside the delivery pipe for filtering impurities in the liquid. The flow guide plate has an inclined angle and multiple microgrooves on its surface to guide air bubbles upward and reduce air accumulation. The flow guide plate is further provided with a splash guard. Furthermore, the liquid storage tank contains multiple layers of flow guide plates, with the angle of each layer gradually increasing to guide the liquid to accelerate layer by layer, further reducing air bubble generation. This disclosure solves the problem of how to design the internal structure of a container to make liquid flow smoother and reduce air bubble generation. Attached Figure Description

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0023] Figure 1 This is a schematic diagram of the structure of the liquid replenishment device for a photopolymer printer described in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the delivery pipe in the liquid replenishment device for a photopolymer printer described in this utility model;

[0025] Figure 3 This is a front sectional view of the liquid storage tank in the liquid replenishment device for a light-curing printer described in this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the filter in the liquid replenishment device for a photocurable printer described in this utility model.

[0027] In the diagram: 1. Liquid storage tank; 2. Delivery pipeline; 3. Flow guide plate; 4. Exhaust pipe; 5. Filter; 6. Support rib; 7. Sealing cap; 8. Flexible joint; 9. Spiral blade; 10. Vent hole; 11. Sound-absorbing cotton; 12. Coarse filter layer; 13. Fine filter layer; 14. Flow sensor; 15. Guide cone Detailed Implementation

[0028] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0029] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0030] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this disclosure. The drawings only show the components related to this disclosure and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0033] like Figure 1 As shown, a liquid replenishment device for a photopolymer printer according to this application includes a liquid storage tank 1, a delivery pipe 2, a flow guide plate 3, an exhaust pipe 4, and a filter 5. The device is designed to ensure smooth delivery of printing material and effectively solve the problem of smooth liquid flow and no air bubble accumulation during the printing process.

[0034] First, the liquid storage tank 1 is used to store the liquid material to be printed. Its design takes into account the liquid storage capacity and stability issues in practical applications. The storage tank is connected to the delivery pipe 2, and the liquid is transferred from the storage tank 1 to the print head by a pump or gravity. This direct connection path allows the material required for printing to be produced continuously, thus ensuring the continuity and efficiency of production.

[0035] Next is the delivery pipe 2, a key component connecting the liquid storage tank 1 and the print head. This part needs to have good sealing and corrosion resistance. To prevent contamination of the printing material and clogging of the print nozzles during delivery, a filter 5 is installed inside the delivery pipe 2. It effectively blocks impurities from entering the printing process, maintaining print quality.

[0036] For details, please refer to the following: Figure 3 The flow guide plate 3 is located inside the liquid storage tank 1, near the liquid inflow point. Its main function is to control and guide the direction of liquid flow while preventing liquid splashing. Furthermore, it is not a single piece, but rather composed of several flow guide plates 3 arranged in layers, with the angle between each layer gradually increasing according to the liquid's trajectory. This unique structural design facilitates the gradual acceleration of flow velocity layer by layer. Additionally, the surface of the flow guide plate 3 has multiple fine grooves to assist in the rise of air bubbles, further reducing blockage caused by gas accumulation.

[0037] Continue to refer to Figure 3The exhaust pipe 4 starts at the top of the liquid storage tank 1 and extends to the ambient air. This releases residual gas or expansion gas caused by temperature changes when the tank is sealed, ensuring that the interior is always under appropriate pressure to guarantee the normal outflow of subsequent liquid.

[0038] In this application, the flow guide plate 3 optimizes the flow direction by adjusting the tilt angle and uses multiple anti-splash mechanisms to prevent liquid droplets from flying. In addition, the superposition effect of the multi-stage guide plates can make the material flow more orderly and smooth and suppress the chance of bubble formation, thereby greatly improving the working reliability of the equipment and the quality level of the finished product.

[0039] In one embodiment, return to reference Figure 1 The liquid reservoir 1 of the liquid replenishment device for a photopolymer printer disclosed in this application features a gradually narrowing wedge-shaped structure at the bottom. This unique wedge design effectively alters the flow path of the liquid within the reservoir 1, ensuring that the liquid flows smoothly to the delivery pipe 2 as it passes through the bottom of the reservoir 1. Because the bottom space gradually decreases, this design helps guide the liquid to flow out from the confined space, reducing dead zones and residues, and further improving the stability and efficiency of the liquid delivery of the printing material.

[0040] Specifically, the wedge-shaped structure is installed at the very bottom of the liquid storage tank 1 and smoothly transitions to its outer wall, ensuring that no liquid residue areas form within the tank. Furthermore, by adjusting the angle and narrowing of the bottom of the liquid storage tank 1, flowability at different liquid levels can be optimized, ensuring uniform liquid distribution and smooth discharge throughout the tank. This design also allows for stable liquid flow under various operating conditions, such as rapid filling or low liquid levels.

[0041] For example, firstly, an integrated liquid storage tank 1 with the required shape and angle is cast using a mold. During the production process, the precision and surface smoothness of the wedge-shaped portion are strictly controlled to avoid liquid accumulation problems caused by improper processing. Simultaneously, in practical applications, the durability and pressure resistance of this wedge-shaped portion can be enhanced by selecting appropriate materials (such as high-strength engineering plastics) to ensure long-term reliability. Additionally, fine flow-guiding textures or special coatings can be added to its inner surface to help reduce adhesion, thereby improving cleanliness.

[0042] In one embodiment, the liquid reservoir 1 of the photopolymer printer refill device of this application is provided with a flow guide cone 15 at the bottom. The flow guide cone 15 is installed at the center of the bottom surface of the liquid reservoir 1 and is fixedly connected by welding or fasteners. This structural design allows the printing material inside the liquid reservoir 1 to flow out more smoothly, avoiding liquid stagnation in the reservoir due to low liquid level, which would affect the refilling effect. The design of the flow guide cone 15 ensures that the liquid flows through this structure and is concentrated and accelerated, thereby effectively reducing stagnation.

[0043] Support ribs 6 are provided above the flow guide cone 15 to reinforce the entire structure. These support ribs 6 extend outward from the flow guide cone 15 and are firmly connected to the inner wall of the liquid storage tank 1 to enhance the stability and durability of the flow guide cone 15. The number and layout of the support ribs 6 can be adjusted according to actual needs to ensure that they do not affect the liquid flow while providing sufficient mechanical support. In some application scenarios, such as environments requiring frequent movement or long-term operation, the robust support ribs 6 can significantly improve the reliability of the flow guide cone 15 and the overall device.

[0044] Specifically, the flow guide cone 15 and the support rib 6 can be achieved through either integral molding or separate processing followed by assembly. For integral molding, a high-strength polymer material is used to manufacture an integral structure including the conical base and ribs. In separate manufacturing, the flow guide cone 15 and the support rib 6 are first prepared separately, and then combined together by methods such as bonding, threaded connections, or embedding. This construction method allows for individual component processing followed by precise assembly, thereby improving manufacturing efficiency and product quality.

[0045] Continue to refer to Figure 1 In one embodiment, the liquid reservoir 1 of the photopolymer printer refill device of this application is provided with a sealing cap 7 on top for effectively sealing the filling port. This sealing cap 7 is tightly fixed to the top cover of the reservoir via a spiral structure or snap-fit ​​connection, ensuring that the liquid reservoir 1 maintains a high degree of airtightness during use, effectively preventing the entry of external air and impurities, thereby protecting the photopolymer resin and other printing materials inside the reservoir from contamination and ensuring their stable performance. Simultaneously, during the refilling process, the sealing cap 7 can be easily opened so that the operator can smoothly inject the replenished printing liquid into the liquid reservoir 1.

[0046] The sealing cap 7 in this design is not just a simple cover component; it may also incorporate an anti-backflow structure to prevent liquid spillage during printing, thus avoiding waste and cleaning difficulties. The edges of the sealing cap 7 can also be equipped with sealing rings made of silicone or other soft materials to enhance its sealing effect, resulting in better sealing and durability.

[0047] For example, in practical applications, a more intelligent technical solution can be achieved by integrating a pressure sensor and a pressure relief valve inside the sealing cover 7 to monitor the pressure inside the liquid storage tank 1. If the pressure exceeds the safe range, the pressure relief valve will automatically open to adjust the pressure back to the normal operating range, thus preventing damage caused by excessive internal pressure. Furthermore, a small vent hole can be provided in the center of the sealing cover 7, and a fine mesh filter can be installed to allow a small amount of fresh air to be slowly replenished without affecting the exhaust circuit function, further reducing the risk of gas overpressure inside the storage tank due to prolonged closure of the sealing cover 7.

[0048] In one embodiment, the delivery pipe 2 of the liquid replenishment device for a UV-curing printer according to this application consists of multiple segmented pipes. These segmented pipes are connected by flexible joints 8 (see [link]). Figure 1 This design allows for relative movement of each segment within a certain range. This structural design effectively accommodates displacement issues caused by vibration or deformation that may occur during machine operation. The flexible joint 8 is specifically designed to be made of hose or elastic material, possessing excellent flexibility and corrosion resistance. This connection method allows the pipeline to be adjusted not only vertically but also to have a certain amount of room for movement in the horizontal plane. This structure ensures the stable operation of the entire liquid conveying system and reduces the impact of external factors on the conveying effect.

[0049] In practical implementation, the segmented pipeline can be rigid plastic or metal pipe, with each segment connected in series via a customized flexible joint 8. For example, each flexible joint 8 uses polyurethane or other suitable elastic material, providing sufficient bending freedom without affecting its sealing performance, allowing the delivery pipeline 2 to flexibly adapt to different installation environments within a predetermined range. The transition between each segment is smooth and seamless, ensuring that the liquid will not experience turbulence or leakage at the joints during delivery, maintaining pressure balance and flow stability within the system.

[0050] In one embodiment, see specific reference. Figure 2 The liquid replenishment device for a UV-curing printer disclosed in this application includes a spiral blade 9 within its delivery pipe 2. This design aims to improve the efficiency and stability of liquid transfer through a special structure. Specifically, the spiral blade 9 is installed inside the delivery pipe 2, and is distributed continuously or in segments along the entire length of the pipe. This arrangement ensures that the liquid is guided by a continuous spiral force during flow, reducing the occurrence of local eddies and turbulence. Furthermore, the spiral blade 9 structure enhances the directional movement of the liquid and, to a certain extent, prevents backflow, ensuring that the liquid smoothly reaches the printhead from the reservoir.

[0051] The helical blade 9 is made of a corrosion-resistant material with good mechanical properties, ensuring long-term reliability and durability. To adapt to different operating conditions and requirements, the helical blade 9 can be available with different pitches and outer diameters. These parameters can be flexibly adjusted according to actual needs. For example, in some applications, a smaller pitch is suitable for more precise flow control, while a larger pitch can increase transmission speed. The helical blade 9 is tightly connected to the conveying pipe 2, ensuring no relative displacement between them to maintain a stable liquid propulsion effect.

[0052] In one embodiment, the prefabricated helical blade 9 can be embedded into a flexible pipe wall or the inner cavity of a rigid pipe during manufacturing, and then fixedly connected through an appropriate sealing process. Alternatively, modern manufacturing technologies such as 3D printing can be used to form the helical blade 9 and its supporting structure in a single process, ensuring structural strength and dimensional accuracy.

[0053] In one embodiment, the splash guard of the liquid replenishment device for a photopolymer printer of this application is located on the flow guide plate 3 and is provided with vent holes 10. This design can effectively prevent splashing of liquid during the delivery process due to excessive flow or other reasons, while allowing gas to flow through, ensuring that the liquid flows out smoothly without affecting the stability of the printing process.

[0054] The flow guide plate 3, a key component within the liquid replenishment device, is installed inside the liquid storage tank 1 at a certain angle. Its surface has multiple microgrooves to guide the liquid flow and the upward path of air bubbles. In this embodiment, a splash guard is further configured above the surface of the flow guide plate 3 to effectively block small droplets that may splash at the end of the liquid's trajectory. To balance liquid flow and ventilation requirements, vent holes 10 are provided in the splash guard, ensuring that while the liquid flow rate is restricted, the internal pressure remains balanced, preventing abnormal gushing or poor drainage caused by pressure changes.

[0055] For example, the splash guard can be made of a polymer material that is both rigid and flexible. It is sheet-like and can be securely fixed to the flow guide plate 3 at an appropriate position using simple mechanical assembly methods (such as snap-fits or screws), ensuring close contact without affecting each other's functionality. The vents 10 are evenly arranged in the center or sides of the splash guard using manufacturing methods such as drilling or molding. Their size and distribution are optimized based on actual test data to achieve the best splash protection and ventilation effect.

[0056] In one embodiment, the inner wall of the exhaust pipe 4 of the liquid replenishment device for a photocurable printer of this application is provided with sound-absorbing cotton 11 (see...). Figure 3This design effectively reduces airflow noise generated during liquid transport by incorporating sound-absorbing material inside the pipe. Since UV curing printers require a quiet environment to minimize impact on operators and improve work accuracy, adding sound-absorbing cotton 11 inside the exhaust pipe 4 significantly reduces exhaust noise, ensuring smoother operation of the entire device.

[0057] In one embodiment, the sound-absorbing cotton 11 is tightly fitted to the inner wall surface of the exhaust pipe 4. The sound-absorbing cotton 11 is typically made of porous fiber materials, such as glass fiber or polyester fiber, which have good sound absorption properties. It is installed at the end connecting to the top of the liquid storage tank 1 up to the section leading to the outside. To achieve this characteristic, during the actual assembly process, the inner wall of the exhaust pipe 4 is first cleaned and pre-treated to ensure it is free of oil and foreign matter before the sound-absorbing cotton 11 is evenly laid. Finally, the sound-absorbing cotton 11 is firmly fixed to the inner wall of the exhaust pipe 4 using appropriate adhesives or physical fasteners. This layout does not hinder the basic function of the exhaust pipe 4 and can absorb noise to the maximum extent during exhaust, providing users with a better working experience.

[0058] For example, the installation of the sound-absorbing cotton 11 can be accomplished through a dedicated process on the production line. During the assembly stage of the exhaust pipe 4, after the inner and outer walls have been smoothed, the pre-cut sound-absorbing cotton 11 is placed on the inner wall using specific tools and secured with environmentally friendly adhesive. Subsequently, the exhaust pipe 4 with the sound-absorbing cotton 11 installed undergoes sealing and noise tests to ensure that each finished product achieves the expected noise reduction effect without affecting its ventilation and pressure relief functions. In practice, the sound-absorbing cotton 11 can also be made of a material with a certain degree of elasticity to better adapt to the bending changes of the exhaust pipe 4 without falling off.

[0059] In one embodiment, see specific reference. Figure 4 The filter 5 of the liquid replenishment device for a UV-curing printer disclosed in this application employs a multi-layer filter design to improve the efficiency and cleanliness of liquid material filtration. Specifically, the filter 5 consists of an upper and lower two-layer structure. The upper layer is a coarse filter layer 12, which is mainly responsible for intercepting larger particles of impurities. The lower layer is a fine filter layer 13, which can further remove fine impurities, thereby ensuring that the liquid material passing through the filtration system is purer and suitable for jobs with high print quality requirements.

[0060] The multi-stage design of the filter layers emphasizes the function of each layer: the upper coarse filter layer 12 uses relatively large pore sizes to quickly capture and retain large impurities, ensuring rapid and efficient initial filtration while avoiding the risk of filter 5 clogging due to fine particles. Meanwhile, after the first stage of treatment, the preliminarily purified material undergoes further filtration through the lower fine filter layer 13. This progressive filtration strategy significantly extends the effective operating cycle of the entire system while ensuring filtration performance. Furthermore, this design facilitates daily cleaning and maintenance.

[0061] Specifically, a designated area is provided within the delivery pipe 2 for assembling a multi-layer filter system. Each filter layer is installed directly or indirectly in this pre-designed location and can be fixed or movable as needed. For example, for easy replacement or cleaning, the filter layer assembly can be secured to the housing using screws or a quick-release mechanism. When the filter 5 needs cleaning or replacement, it can be easily removed simply by loosening these connections. Simultaneously, to ensure a tight seal between different layers and with the pipe itself, rubber rings or other forms of sealing components are typically installed at each interface to prevent unfiltered liquid from leaking and bypassing, thereby maintaining a stable fluid delivery process.

[0062] In one embodiment, a flow sensor 14 is provided below the filter 5 of a photopolymer printer refill device of this application (see [link]). Figure 1 By properly positioning the flow sensor 14 below the filter 5, it is ensured that the filtered liquid can be monitored in real time before entering the printing system.

[0063] Specifically, the flow sensor 14 is installed inside the last pipe of the printing system, below the filter 5. This location allows the flow sensor 14 to receive status information closest to the printhead, while avoiding contamination or interference from unfiltered fluid. This layout ensures the accuracy and reliability of the flow data.

[0064] In one embodiment, this feature can be achieved by embedding the flow sensor 14 within a specially designed pipe section connected to the delivery pipe 2. This pipe section not only serves a transmission function but also acts as a closed and controlled measurement environment, ensuring that the sensor readings are unaffected by external factors. The flow sensor 14 senses the pulsating changes generated by the liquid flow through its built-in probe and converts them into electronic signals that are transmitted to the control system. Furthermore, a sealed connection is established between the pipe and the flow sensor 14 to prevent liquid leakage, ensuring the safety and stability of the system operation. The entire process requires no additional operational intervention, and the operating status of all components can be tracked in real time through an integrated monitoring system.

[0065] In actual operation, when this device is in use, the liquid material to be printed stored in the liquid tank 1 flows to the print head through the delivery pipe 2. To ensure smooth liquid flow and reduce the formation and accumulation of air bubbles, multiple layers of flow guide plates 3 are installed inside the liquid tank 1. These guide plates have an inclined angle and multiple microgrooves on their surface, which can effectively guide the flow of liquid and promote the upward discharge of air bubbles. The flow guide plates 3 are also equipped with splash guards to further reduce liquid splashing. The exhaust pipe 4 is connected to the top of the liquid tank 1 and exhausts air to the external environment to prevent gas from affecting print quality. As the liquid flows through the delivery pipe 2, the filter 5 installed inside the pipe filters out impurities in the liquid, ensuring that the liquid delivered to the print head is pure and uncontaminated. Because the angle of each layer of flow guide plates 3 gradually increases, the liquid is guided to flow faster layer by layer, thereby effectively reducing the generation of air bubbles and improving overall work efficiency.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A liquid replenishment device for a photopolymer printer, characterized in that, include: Liquid storage tank (1), used to store the liquid material to be printed; A delivery pipe (2) is connected between the liquid storage tank (1) and the print head to deliver liquid from the liquid storage tank (1) to the print head; A flow guide plate (3) is installed inside the liquid storage tank (1) to guide the liquid into the delivery pipeline (2); The exhaust pipe (4) is connected to the top of the liquid storage tank (1) at one end and to the outside at the other end, and is used to exhaust the air in the liquid storage tank (1); A filter (5) is installed inside the delivery pipe (2) to filter impurities in the liquid; wherein The flow guide plate (3) has an inclined angle and a plurality of microgrooves on its surface to guide bubbles upward and reduce gas accumulation. The flow guide plate (3) is further provided with a splash guard. The liquid storage tank (1) is equipped with multiple layers of flow guide plates (3). The angle of each layer of flow guide plates (3) gradually increases, guiding the liquid to accelerate layer by layer and further reducing the generation of bubbles.

2. The liquid replenishment device for a photopolymer printer according to claim 1, characterized in that: The bottom of the liquid storage tank (1) adopts a gradually narrowing wedge-shaped structure.

3. The liquid replenishment device for a photopolymer printer according to claim 2, characterized in that: The liquid storage tank (1) is provided with a flow guide cone (15) at the bottom, and the flow guide cone (15) is provided with a support rib (6).

4. The liquid replenishment device for a photopolymer printer according to claim 3, characterized in that: The sealing cap (7) provided on the top of the liquid storage tank (1) is used to seal the liquid filling port of the liquid storage tank (1).

5. The liquid replenishment device for a photopolymer printer according to claim 1, characterized in that: The conveying pipeline (2) includes multiple segmented pipelines and is provided with flexible joints (8) at the connection points, so that the segments can move relative to each other.

6. The liquid replenishment device for a photopolymer printer according to claim 5, characterized in that: The conveying pipe (2) is equipped with spiral blades (9).

7. The liquid replenishment device for a photopolymer printer according to claim 1, characterized in that: The splash guard is located above the flow guide plate (3) and is provided with ventilation holes (10).

8. The liquid replenishment device for a photopolymer printer according to claim 1, characterized in that: The inner wall of the exhaust pipe (4) is provided with sound-absorbing cotton (11).

9. The liquid replenishment device for a photopolymer printer according to claim 1, characterized in that: The filter (5) is designed with multiple layers of filter screens, with a coarse filter layer (12) on top and a fine filter layer (13) on the bottom.

10. A liquid replenishment device for a photopolymer printer according to claim 9, characterized in that: A flow sensor (14) is located below the filter (5).

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