3D printing equipment with three transverse bins

Abstract

The utility model discloses 3D printing equipment with three transverse stock bins, which comprises an equipment main body consisting of a stock bin assembly, an X-axis assembly, a Y-axis assembly, a printing platform and a printing head assembly, the stock bin assembly comprises a first stock bin, a second stock bin and a third stock bin which are transversely arranged in sequence, the X-axis assembly comprises a first X-axis which is transversely arranged, and the Y-axis assembly comprises a second X-axis which is transversely arranged; the second X shaft and the third X shaft are transversely and perpendicularly arranged on the two sides of the first X shaft, a ceramic heating piece is arranged in the feeding shell, a discharging shell is arranged at the bottom of the feeding shell, a discharging head is arranged at the bottom of the discharging shell, and the first stock bin and the second stock bin are converged through two pipelines and then connected with a first printing head. And the third stock bin is independently connected with the second printing head through the single-pipe form of the pipeline. The problems that in the prior art, due to the arrangement mode of vertical bins of 3D printing equipment, materials are inconvenient to change, and the multi-layer printing characteristic is lacked are solved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing, and in particular to a 3D printing device with a horizontal three-compartment container. Background Technology

[0002] 3D printing, also known as additive manufacturing, is a technology that manufactures solid parts by adding materials layer by layer based on 3D CAD data. With continuous technological advancements, 3D printing technology has rapidly emerged in various fields. By using 3D printing, designers' creative ideas can be quickly transformed into real products. This technology not only significantly shortens product development cycles but also improves product production efficiency and quality.

[0003] Most existing 3D printing equipment uses a single-hopper structure, with a few using a multi-hopper stacked structure. Currently, these stacked, vertical hopper structures suffer from problems such as difficulty in replacing the upper hopper and low differentiation between granular and paste materials, making them particularly unsuitable for the combined transport of fine particles and high-viscosity pastes. Furthermore, existing equipment can only achieve single-particle or dual-material printing, failing to meet the simultaneous molding requirements of three (or more) layers of materials, such as rigid support layers, dynamic repair layers, and ecological function layers, in marine restoration projects.

[0004] In view of this, this technical solution proposes a 3D printing device with three horizontal material bins. It adopts a horizontally placed multi-bin structure, which makes it easy to replace printing materials. In addition, with the X and Y axis components, it can realize multi-layer material printing in three-dimensional space. The overall structure is modular, which is easy to assemble, disassemble, maintain and use. Utility Model Content

[0005] The present invention aims to at least partially solve one of the technical problems in the related technologies. Therefore, the main objective of this invention is to provide a 3D printing device with a horizontal three-compartment design, which addresses the inconvenience of material changing and the lack of multi-layer printing capabilities caused by the vertical material compartment arrangement in existing 3D printing devices.

[0006] To achieve the above objectives, this utility model provides a 3D printing device with a horizontal three-bucket configuration, comprising a main body consisting of a bucket assembly, an X-axis assembly, a Y-axis assembly, a printing platform, and a print head assembly.

[0007] The hopper assembly includes a first hopper, a second hopper, and a third hopper arranged horizontally in sequence.

[0008] The X-axis assembly includes a first X-axis placed horizontally, and a second X-axis and a third X-axis arranged horizontally and vertically on both sides of the first X-axis. The ends of the second X-axis and the third X-axis are connected by a fixing rod. The first X-axis, the second X-axis, the third X-axis, and the fixing rod form a rectangular frame structure. The bottom of each hopper of the hopper assembly is fixed to the fixing rod.

[0009] The Y-axis assembly includes a mounting bracket vertically fixed below the fixing rod. The mounting bracket is a rectangular frame with guide rail structures with slides on both sides. A Y-axis motor is mounted on the mounting bracket, and the Y-axis motor is connected to a lead screw parallel to the mounting bracket. The printing platform is connected to the slides and the lead screw.

[0010] The printhead assembly includes a first printhead and a second printhead arranged side-by-side on the first X-axis. Both the first and second printheads include a connecting seat slidably mounted on the first X-axis and an infeed housing located on one side of the connecting seat. The infeed housing has a pipe interface and contains a ceramic heating element. An outlet housing is located at the bottom of the infeed housing, and an outlet head is located at the bottom of the outlet housing.

[0011] The first and second material bins are connected to the first print head via two converging pipelines, while the third material bin is connected to the second print head via a single-pipe configuration of the pipelines.

[0012] As a further embodiment of this invention, the top of the outer shell of the second hopper is provided with a pressure balancing valve to prevent negative pressure powder absorption caused by the evaporation of DMF solvent.

[0013] As a further embodiment of this invention, the interior of the second hopper is provided with a screw to prevent material jamming when conveying fine particles.

[0014] As a further improvement of this utility model, a vibrating feeding device is provided on one side of the first hopper to prevent coarse particles from bridging.

[0015] As a further embodiment of this utility model, the hopper assembly also includes a connecting piece disposed between the two hoppers, and a fixing bracket welded to the bottom of each connecting piece, wherein the bottom of the fixing bracket is connected to the fixing rod through a fixing frame.

[0016] As a further embodiment of this utility model, the lead screw is a double-rod structure, and each rod is provided with a limiting frame for maintaining stable vertical operation. The limiting frame is connected to the tail of the printing platform.

[0017] As a further embodiment of this utility model, each end of the fixing rod is provided with a pulley, and each pulley is connected to the connecting seat of the first print head and the second print head through a transmission belt.

[0018] As a further improvement of this invention, the back of the feed housing is provided with a cooling fan to prevent the printing material from deteriorating due to heat.

[0019] As a further embodiment of this invention, a cooling device is provided on one side of the discharge housing to allow the printing material to solidify and take shape quickly.

[0020] As a further embodiment of this invention, the cooling device is a turbine device that draws air from above and blows air towards the discharge head.

[0021] The beneficial effects of this utility model are as follows:

[0022] This solution utilizes a horizontally arranged first, second, and third hopper, along with a vibratory feeding device, an internal screw, and independent piping, to specifically address the characteristics of three types of materials. The vibratory feeding device periodically impacts the sidewall of the first hopper, forcibly disrupting the arched structure of coarse particles. The rotating screw in the second hopper pushes fine particles, preventing retention caused by electrostatic forces. The third hopper is directly connected to the second printhead via a single pipe, ensuring unimpeded extrusion of high-viscosity paste. The dual printhead design allows the first printhead to simultaneously mix materials from the first and second hoppers, while the second printhead independently outputs the paste from the third hopper. Combined with the linkage of the dual printheads on the first X-axis and the precise lifting and lowering of the printing platform via a dual-screw limiter, the simultaneous stacking and fusion of three heterogeneous materials (such as a rigid support layer, a dynamic repair layer, and an ecological functional layer) is achieved. The rectangular frame and fixed rod pulley drive of the X-axis assembly enhance the stability of the printhead movement. The combination of the Y-axis double-bar lead screw and limit frame eliminates platform lifting and offset. The cooling fan in the feed housing prevents the material from softening and sticking due to heat, while the turbine cooling device in the discharge housing accelerates material curing and shaping. Together, they ensure printing accuracy and interlayer bonding strength. The overall modular design allows for quick assembly and disassembly of the material bin via connecting plates and fixed brackets. Standardized interfaces for the printhead and piping support flexible replacement, significantly reducing maintenance costs and expanding the equipment's application capabilities in complex multi-material scenarios. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of this utility model 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 the technical solutions of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the main body of the device in this utility model.

[0025] Figure 2 This is a schematic diagram of the overall structure of the hopper assembly and Y-axis assembly in this utility model.

[0026] Figure 3 This is a schematic diagram of the overall structure of the printhead assembly in this utility model.

[0027] Figure 4 This is a schematic diagram of the overall structure of the X-axis component and printing platform in this utility model.

[0028] Figure 5 This is a schematic diagram of the components of the X-axis assembly and the hopper assembly in this utility model.

[0029] Figure 6 This is a schematic diagram showing the configuration of each connecting component in this utility model.

[0030] Figure 7 This is a schematic diagram of the pulley and transmission belt configuration in this utility model.

[0031] Figure 8 This is a schematic diagram of the auxiliary feeding devices installed on the hopper in this utility model.

[0032] Figure 9 This is a schematic diagram of the overall structure of the Y-axis component in this utility model.

[0033] Figure 10 This is a schematic diagram of the structure of each component of the Y-axis assembly in this utility model.

[0034] Figure 11 This is a schematic diagram showing the connection seat, cooling device, and ceramic heating element of the print head in this utility model.

[0035] Figure 12 This is a schematic diagram showing the cooling fan, feed housing, and pipeline interface of the printhead in this utility model.

[0036] Figure 13 This is a schematic diagram showing the output housing and output head of the print head in this utility model.

[0037] label name label name 1 Equipment body 115 Drive belt 10 Silo Components 12 Y-axis component 100 First Warehouse 120 Mounting bracket 1000 Vibrating feeding device 121 Slide 101 Second silo 1210 Limiting frame 1010 air pressure balance valve 122 Lead screw 1011 screw 123 Y-axis motor 102 Third silo 124 Motor mounting bracket 1020 plunger pump 13 Printing platform 1001 outer casing 14 Printhead assembly 103 Piping 140 First printhead 104 Connecting piece 141 Second printhead 105 Fixed bracket 1400 Connector 106 Fixed frame 1401 Ceramic heating element 11 X-axis component 1402 Cooling device 110 First X-axis 1403 Pipeline interface 111 Second X-axis 1404 Cooling fan 112 Third X-axis 1405 discharge head 113 Fixed rod 1406 Feed shell 114 pulley 1407 Discharge shell Detailed Implementation

[0038] as follows:

[0039] Please see the appendix Figure 1-13 ,

[0040] The main structure includes a main body 1 consisting of a hopper assembly 10, an X-axis assembly 11, a Y-axis assembly 12, a printing platform 13, and a printhead assembly 14. The hopper assembly 10 includes a first hopper 100, a second hopper 101, and a third hopper 102 arranged horizontally in sequence. The X-axis assembly 11 includes a first X-axis 110 placed horizontally, and a second X-axis 111 and a third X-axis 112 arranged horizontally and vertically on both sides of the first X-axis 110. The ends of the second X-axis 111 and the third X-axis 112 are connected by a fixing rod 113. The first X-axis 110, the second X-axis 111, the third X-axis 112, and the fixing rod 113 form a rectangular frame structure. The bottom of each hopper in the hopper assembly 10 is fixed to the fixing rod 113. The Y-axis assembly 12 includes a mounting bracket 120 vertically fixed below the fixing rod 113. The mounting bracket 120 is a rectangular frame with guide rail structures with slides 121 on both sides. A Y-axis motor 12 is mounted on the mounting bracket 120. 3. The Y-axis motor 123 is connected to a lead screw 122 parallel to the mounting bracket 120. The printing platform 13 is connected to the slide 121 and the lead screw 122. The print head assembly 14 includes a first print head 140 and a second print head 141 arranged side by side on the first X-axis 110. Both the first print head 140 and the second print head 141 include a connecting seat 1400 slidably arranged on the first X-axis 110 and a feed housing 1406 disposed on one side of the connecting seat 1400. The feeding housing 1406 is provided with a pipe interface 1403. The feeding housing 1406 is provided with a ceramic heating element 1401. The bottom of the feeding housing 1406 is provided with a discharge housing 1407. The bottom of the discharge housing 1407 is provided with a discharge head 1405. The first material bin 100 and the second material bin 101 are connected to the first print head 140 after converging through two pipes 103. The third material bin 102 is connected to the second print head 141 separately through a single pipe of the pipe 103.

[0041] The working principle is as follows:

[0042] This technical solution effectively solves the problems of material changing difficulties, poor material compatibility, and inability to achieve multi-layer synchronous molding caused by vertically stacked material hoppers in traditional 3D printing equipment, through the combination of three horizontally arranged hoppers and a multi-layer printing structure. In existing technologies, the vertically stacked hopper structure makes it extremely inconvenient to change the upper hopper, especially for scenarios that require frequent material switching (such as alternating printing of rigid support layers, dynamic restoration layers, and ecological function layers in marine restoration), resulting in low operational efficiency and safety hazards. At the same time, traditional single-hopper or dual-hopper equipment is limited by the single material delivery path, making it difficult to accommodate the printing requirements of mixed coarse particles, fine particles, and high-viscosity paste materials. For example, fine particles are prone to jamming during delivery, paste materials have poor flowability leading to uneven discharge, and coarse particles are prone to bridging and blockage at the hopper outlet. This technical solution arranges the first hopper 100, the second hopper 101, and the third hopper 102 horizontally. A rectangular frame structure formed by the fixing rod 113 and the X-axis assembly 11 provides overall rigid support. The bottom of each hopper is directly fixed to the fixing rod 113 at the ends of the second X-axis 111 and the third X-axis 112 (the first X-axis 110 can slide on the second X-axis 111 and the third X-axis 112 on both sides via a motor or cylinder). This not only allows operators to quickly change materials in any hopper on the same horizontal plane, but also optimizes material conveying through the targeted design of each hopper. Specifically, a vibrating feeding device 1000 is added to the side of the first hopper 100, using periodic vibration to break the arch structure formed by the accumulation of coarse particles, ensuring the continuous and stable descent of large particles. The second hopper 101 is equipped with a screw conveying mechanism 1011, which uses rotational thrust to evenly push fine particles into the pipeline 103, preventing particles from remaining in the pipeline due to electrostatic force or friction. The third hopper 102 is directly connected to the second printhead 141 via an independent pipeline 103, specifically designed for the unobstructed delivery of high-viscosity paste materials. The printhead assembly 14 adopts a dual-head independent control design. The first printhead 140 receives materials from the first hopper 100 and the second hopper 101 simultaneously via the converging pipeline 103, enabling pre-mixing of coarse and fine particles or alternating extrusion of layers. The second printhead 141 independently extrudes paste materials via a single pipe directly connected to the third hopper 102. Combined with the synchronous movement capability of the dual printheads on the first X-axis 110 and the precise lifting and lowering of the printing platform 13 driven by the Y-axis lead screw 122, the three-dimensional stacking and synchronous molding of three heterogeneous materials (such as an outer rigid support layer, an intermediate dynamic repair layer, and a surface ecological functional layer) can be completed within the same printing cycle. The rectangular frame structure of the X-axis assembly 11 is rigidly connected to the first X-axis 110, the second X-axis 111, the third X-axis 112 and the fixed rod 113, ensuring the stability of the print head when moving at high speed. In conjunction with the pulleys 114 at both ends of the fixed rod 113 and the transmission belt 115 to drive the print head connector 1400, the positioning accuracy in the X-axis direction is further improved.The Y-axis assembly 12 uses a combination of a double-screw lead screw 122 and a limiting frame 1210 to keep the printing platform 13 horizontal and without deviation during lifting and lowering, avoiding interlayer misalignment caused by unilateral force. Furthermore, the cooling fan 1404 on the back of the feed housing 1406 can promptly dissipate residual heat from the heating zone, preventing premature softening and adhesion of the material within the pipe 103; the turbine cooling device 1402 on the side of the discharge housing 1407 accelerates surface curing of the extruded material through directional airflow, reducing the risk of interlayer collapse. The overall structure achieves rapid assembly and maintenance through modular design. For example, the material bins are welded to the fixed bracket 105 via connecting pieces 104, allowing for independent disassembly and replacement; the print head and pipe 103 use standardized interfaces, supporting flexible adaptation to nozzles of different materials. These improvements enable the equipment to efficiently handle 3D printing tasks with multiple material combinations, making it particularly suitable for industrial repair, biomedical, and other fields requiring complex material ratios and structural layering.

[0043] The assembly and disassembly process of this scheme's structure can be as follows:

[0044] During assembly, the first X-axis 110 is placed horizontally, and the second X-axis 111 and the third X-axis 112 are vertically fixed to both sides of the first X-axis 110. The two ends are connected by a fixing rod 113 to form a rectangular frame structure, ensuring the parallelism of each axis and the tightness of the bolts at the connection points. The first hopper 100, the second hopper 101, and the third hopper 102 are arranged horizontally, and the side walls between the hoppers are welded together using connecting pieces 104. A fixing bracket 105 is welded to the bottom, and then the fixing bracket 105 is locked to the fixing rod 113 of the X-axis assembly 11 via a fixing frame 106, ensuring the hoppers are horizontally aligned. A mounting bracket 120 of the rectangular frame is vertically installed below the fixing rod 113, and slide blocks 121 are installed on the guide rails on both sides. The double-rod lead screw 122 is connected to the Y-axis motor 123 and then fixed to the mounting bracket 120. The printing platform 13 is connected to the lead screw 122 nut via the slide block 121. A limit frame 1210 is added to the tail to improve stability. The first printing platform 13 is then... The connecting seat 1400 of the print head 140 and the second print head 141 is slidably mounted on the first X-axis 110. A transmission belt 115 connects the pulleys 114 at both ends of the fixing rod 113 to the print head connecting seat 1400, ensuring appropriate tension on the pulleys 114. The feed housing 1406 is locked to the connecting seat 1400. The ceramic heating element 1401, the discharge housing 1407, and the discharge head 1405 are then installed. The first hopper 100 and the second hopper 101... After converging, the pipes 103 are connected to the pipe interface 1403 of the first print head 140. The third hopper 102 is connected to the second print head 141 separately through a single pipe. An internal screw 1011 and a top air pressure balance valve 1010 are installed in the second hopper 101. A vibrating feeding device 1000 is added to the side of the first hopper 100. A cooling fan 1404 is installed on the back of the infeed housing 1406. A turbine cooling device 1402 is installed on the side of the discharge housing 1407.

[0045] When disassembly is required, turn off the power to the equipment, disconnect the connecting pipe 103 between the hopper and the print head, release any remaining material in the pipe 103, loosen the connection between the drive belt 115 and the pulley 114, remove the print head connector 1400 bolts on the first X-axis 110, remove the first print head 140 and the second print head 141, separate the feed housing 1406 and the discharge housing 1407, remove the connecting bolts between the fixing frame 106 and the fixing rod 113, separate the fixing bracket 105 at the bottom of the hopper, and disassemble the hopper compartment. Connecting piece 104, remove the third material bin 102, the second material bin 101, and the first material bin 100 in sequence, disassemble the connection between the printing platform 13 and the slide block 121 and the lead screw 122 nut, loosen the fixing bolts between the mounting bracket 120 and the fixing rod 113, remove the Y-axis assembly 12 and the lead screw 122 structure as a whole, remove the connecting bolts between both ends of the fixing rod 113 and the second X-axis 111 and the third X-axis 112, and remove the third X-axis 112, the second X-axis 111 and the first X-axis 110 in sequence to complete the frame disassembly.

[0046] Reference Appendix Figure 8 In a preferred embodiment of this utility model, the top of the outer shell 1001 of the second hopper 101 is provided with a pressure balancing valve 1010 for preventing negative pressure powder suction caused by the evaporation of DMF solvent.

[0047] The pressure balancing valve 1010 automatically adjusts the pressure difference inside and outside the second hopper 101 to prevent a negative pressure environment from forming when the DMF solvent evaporates. When the solvent evaporates and the pressure inside the hopper decreases, the valve draws in external air to balance the pressure, preventing fine particles from adhering to the inner wall of the hopper or clogging the discharge port due to adsorption. At the same time, it filters impurities in the air to ensure the purity of the material and the stability of continuous conveying.

[0048] Reference Appendix Figure 8 In a preferred embodiment of this utility model, the interior of the second hopper 101 is provided with a screw 1011 for preventing material jamming when conveying fine particles.

[0049] By rotating the material, the fine particles are pushed towards the discharge port, preventing them from accumulating and getting stuck at the bottom of the hopper due to electrostatic adsorption or frictional resistance. This ensures that the material is evenly dispersed and that the fine particles continuously and stably enter the conveying pipeline 103, preventing intermittent material supply that could lead to gaps or cavities in the printed layers.

[0050] Reference Appendix Figure 8 In a preferred embodiment of this utility model, a vibrating feeding device 1000 for preventing coarse particles from bridging is provided on one side of the first hopper 100.

[0051] The vibrating feeding device 1000 periodically vibrates and impacts the side wall of the first hopper 100, breaking the arch-shaped accumulation structure formed by the compression of coarse particles at the outlet, forcing the particles to disperse and fall, avoiding interruption of material supply due to jamming, thereby ensuring that coarse particle material continuously and evenly enters the conveying pipeline 103, and preventing the printing layer from having cavities or insufficient structural strength due to lack of material.

[0052] Reference Appendix Figure 6 In a preferred embodiment of the present invention, the hopper assembly 10 further includes a connecting piece 104 disposed between the two hoppers, and a fixing bracket 105 welded to the bottom of each connecting piece 104. The bottom of the fixing bracket 105 is connected to the fixing rod 113 through a fixing frame 106.

[0053] The connecting piece 104, together with the bottom fixed bracket 105, forms a rigid frame, integrating the three hoppers into a single structure to prevent lateral swaying. The fixed bracket 105 is locked to the fixed rod 113 of the X-axis assembly 11 via the bottom fixed frame 106, evenly distributing the weight of the hopper assembly 10 to the support frame, avoiding deformation due to single-point stress, while maintaining the horizontal alignment of each hopper, facilitating precise connection of the pipeline 103 and quick disassembly and maintenance.

[0054] Reference Appendix Figure 10 In a preferred embodiment of this utility model, the lead screw 122 is a double-rod structure, and each rod is provided with a limiting frame 1210 for maintaining stable vertical operation. The limiting frame 1210 is connected to the tail of the printing platform 13.

[0055] The double lead screw 122 is driven synchronously on both sides of the printing platform 13. Together with the limit frame 1210 that is locked on the rod, it restricts the lifting trajectory of the platform, counteracts the tilting force when the force is applied on one side, prevents the platform from shifting left or right or shaking, and ensures that the printing layers are always horizontally aligned. This avoids problems such as misalignment between layers or uneven material accumulation caused by unstable lifting.

[0056] Reference Appendix Figure 7 In a preferred embodiment of this utility model, both ends of the fixing rod 113 are provided with pulleys 114, and each pulley 114 is connected to the connecting seat 1400 of the first print head 140 and the second print head 141 through a transmission belt 115.

[0057] In this design, the first printhead 140 and the second printhead 141 can operate independently or together. Operation can be achieved through the interaction of the pulleys 114 on both sides and the drive belt 115, or by motor control.

[0058] Reference Appendix Figure 12 In a preferred embodiment of this utility model, the back of the feed housing 1406 is provided with a cooling fan 1404 to prevent the printing material from deteriorating due to heat.

[0059] The hot air fan actively removes the heat accumulated inside the feed housing 1406, preventing the material from softening or deteriorating due to prolonged heating, avoiding premature melting of the material which could cause blockage of the discharge head 1405, maintaining the solid stability of the material during the conveying process, and ensuring smooth continuous printing.

[0060] Reference Appendix Figure 11 In a preferred embodiment of this utility model, a cooling device 1402 for rapidly curing the printing material is provided on one side of the discharge housing 1407.

[0061] The cooling device 1402 uses the airflow generated by the turbine to quickly remove the heat from the high-temperature material extruded from the discharge head 1405, accelerating its surface curing and preventing the material from sagging or deforming due to its own weight or from not fully fusing with the lower layer. This ensures clear outlines of the printed layers and tight interlayer bonding, improving the precision and strength of the finished product. The cooling device 1402 can be a turbine device that draws air from above and blows air onto the discharge head 1405.

[0062] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. Any equivalent structural transformations made using the contents of the present utility model specification and drawings under the concept of the present utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A 3D printing apparatus having a lateral three-cartridge, characterized by, include The main body of the equipment consists of a hopper assembly, an X-axis assembly, a Y-axis assembly, a printing platform, and a printhead assembly. The hopper assembly includes a first hopper, a second hopper, and a third hopper arranged horizontally in sequence. The X-axis assembly includes a first X-axis placed horizontally, and a second X-axis and a third X-axis arranged horizontally and vertically on both sides of the first X-axis. The ends of the second X-axis and the third X-axis are connected by a fixing rod. The first X-axis, the second X-axis, the third X-axis, and the fixing rod form a rectangular frame structure. The bottom of each hopper of the hopper assembly is fixed to the fixing rod. The Y-axis assembly includes a mounting bracket vertically fixed below the fixing rod. The mounting bracket is a rectangular frame with guide rail structures with slides on both sides. A Y-axis motor is mounted on the mounting bracket, and the Y-axis motor is connected to a lead screw parallel to the mounting bracket. The printing platform is connected to the slides and the lead screw. The printhead assembly includes a first printhead and a second printhead arranged side-by-side on the first X-axis. Both the first and second printheads include a connecting seat slidably mounted on the first X-axis and an infeed housing located on one side of the connecting seat. The infeed housing has a pipe interface and contains a ceramic heating element. An outlet housing is located at the bottom of the infeed housing, and an outlet head is located at the bottom of the outlet housing. The first and second material bins are connected to the first print head via two converging pipelines, while the third material bin is connected to the second print head via a single-pipe configuration of the pipelines.

2. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The top of the outer shell of the second hopper is equipped with a pressure balancing valve to prevent negative pressure powder absorption caused by the evaporation of DMF solvent.

3. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The second hopper is equipped with a screw to prevent jamming when conveying fine particles.

4. A 3D printing device with a horizontal three-compartment container as described in claim 1, characterized in that, The first hopper is equipped with a vibrating feeding device on one side to prevent coarse particles from bridging.

5. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The hopper assembly also includes a connecting piece disposed between the two hoppers, and a fixed bracket welded to the bottom of each connecting piece. The bottom of the fixed bracket is connected to the fixed rod via a fixed frame.

6. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The lead screw has a double-rod structure, and each rod is provided with a limiting frame to maintain stable vertical operation. The limiting frame is connected to the tail of the printing platform.

7. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, Both ends of the fixing rod are provided with pulleys, and each pulley is connected to the connecting seat of the first print head and the second print head through a transmission belt.

8. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The back of the feed housing is equipped with a cooling fan to prevent the printing material from deteriorating due to heat.

9. The 3D printing device with lateral three hoppers according to claim 1, characterized in that, The discharge housing is equipped with a cooling device on one side to allow the printing material to solidify and take shape quickly.

10. The 3D printing device with lateral three hoppers according to claim 9, characterized in that, The cooling device is a turbine device that draws air from above and blows air into the discharge head.

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