Distributed heating system for piston of additive manufacturing forming cylinder
By employing a distributed heating system in the piston structure of a metal 3D printing equipment, the problem of uneven heat distribution caused by loose assembly between the substrate and the heating block is solved, resulting in more efficient heating and more precise forming, while reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-03-20
AI Technical Summary
In existing metal 3D printing equipment piston structures, the substrate and heating block are not tightly assembled, resulting in uneven heat conduction, which affects printing quality and dimensional accuracy, especially when printing large parts.
A decentralized heating system is adopted, which sets up a multi-partition heating plate frame under the substrate. Each heating block is independently positioned and connected to the heat insulation plate through a heat-resistant compression spring, ensuring that the upper surface of the heating block is in close contact with the lower surface of the substrate. A ceramic ring is used to connect to the heating tube to achieve uniform heating.
It improves heating efficiency and forming accuracy, prevents local deformation of the substrate, ensures the quality of the initial layer of the printed parts, and reduces maintenance costs and difficulties.
Smart Images
Figure CN224011241U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to additive manufacturing technical field, especially, relate to a kind of dispersed heating system of additive manufacturing forming cylinder piston. BACKGROUND
[0002] Metal 3D printing technology is the common name of metal additive manufacturing technology, which is based on the principle of discrete-accumulation, based on three-dimensional digital model file and program command, using powder or wire-shaped metal material, through layer-by-layer printing to construct metal parts technology.
[0003] In the piston structure of metal 3D printing equipment, the substrate is usually made of materials with good thermal conductivity, such as metal or ceramic. Its surface is flat to better contact with the object to be heated. The substrate is equipped with a heating block below. The heating block usually contains a heating tube or resistance wire inside. The current generates heat and conducts heat to the substrate, so that the temperature of the substrate meets the printing requirements of the part.
[0004] The existing heating block of the piston heating structure is a separate whole attached to the bottom of the substrate, which conducts heat to the substrate by heating. Since the heating block is a separate whole, during assembly with the substrate, the substrate assembly leveling problem may cause the upper surface of the heating block and the lower surface of the substrate not to be completely and tightly fitted. Once there is a gap, it will inevitably affect the heat conduction efficiency of the heating block to the substrate, causing uneven heating of the substrate, and thus there is a risk of local deformation of the substrate. When printing workpieces, it affects the quality and size accuracy of the initial layer printing of the part. The larger the size of the substrate, the greater the risk, and the larger the longitudinal size of the part to be printed, the greater the size deviation after forming. UTILITY MODEL CONTENTS
[0005] The utility model provides a kind of dispersed heating system of additive manufacturing forming cylinder piston to solve the problems in prior art, when facing the product of printing forming size larger, the dispersed heating system of this forming cylinder piston of the existing piston heating structure can guarantee precision and heating efficiency better, this dispersed heating system is not only convenient to install, and can make maintenance form more simple, and cost is lower.
[0006] The utility model discloses a kind of dispersed heating systems of additive manufacturing forming cylinder piston, including sealing plate, heat insulation plate, heating plate frame, heating block and substrate, the sealing plate, heat insulation plate, heating plate frame are sequentially connected from bottom to top, the heating plate frame is multiple partition type structure, one heating block is placed in each partition, each the heating block is positioned between heat insulation plate and substrate, the lower portion of each the heating block is positioned and connected with heat insulation plate by heat-resistant compression spring, and the upper surface height of each the heating block is slightly higher than the upper surface height of heating plate frame, so that when substrate is assembled above heating plate frame, the upper surface of each heating block is all adhered to the lower surface of substrate.
[0007] In the above technical solution, preferably, a heating pipe is embedded in each heating block, and the two ends of the heating pipe are connected with the terminal posts through ceramic rings respectively.
[0008] In the above technical solution, preferably, the heating blocks are uniformly arranged in the heating plate frame.
[0009] In the above technical solution, preferably, a limiting groove for limiting the heat-resistant compression spring is arranged at the position corresponding to the lower surface of each heating block and the upper surface of the heat insulation plate.
[0010] In the above technical solution, preferably, the material of the heat insulation plate is mica.
[0011] In the above technical solution, preferably, the materials of the heating blocks and the heating plate frame are S136H plastic mold steels.
[0012] The utility model has the advantages and positive effects that:
[0013] 1. The utility model discloses a scientific and reasonable design, safe and convenient operation, and a multi-partition type heating plate frame structure that is uniform in heat conduction and convenient to maintain is designed, so that the heating blocks are uniformly arranged under the substrate in a dispersed form, the heating is uniform, the risk of uneven heating of the substrate is reduced, the heating efficiency is greatly improved, and the situation of thermal expansion and cold contraction is prevented; each heating block can be independently adjusted, so that the heating block can be independently disassembled and replaced during later maintenance; the upper surface of the heating block and the lower surface of the substrate can be fully adhered by the cooperation of the heating block and the heat-resistant compression spring.
[0014] 2. The utility model discloses a scientific and reasonable design, safe and convenient operation, and a multi-partition type heating plate frame structure that is uniform in heat conduction and convenient to maintain is designed, so that the heating blocks are uniformly arranged under the substrate in a dispersed form, the heating is uniform, the risk of uneven heating of the substrate is reduced, the heating efficiency is greatly improved, and the situation of thermal expansion and cold contraction is prevented; each heating block can be independently adjusted, so that the heating block can be independently disassembled and replaced during later maintenance; the upper surface of the heating block and the lower surface of the substrate can be fully adhered by the cooperation of the heating block and the heat-resistant compression spring. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1is a perspective view of the decentralized heating system of the forming cylinder piston provided by the embodiment of the utility model;
[0016] Figure 2 is a front view of the decentralized heating system of the forming cylinder piston provided by the embodiment of the utility model;
[0017] Figure 3 is a structure schematic view of the structure of the heating block in the decentralized heating system (remove the base plate);
[0018] Figure 4 is a structure schematic view of the arrangement of the heating pipe in the single heating block.
[0019] In the figure: 1, base plate; 2, heating plate frame; 3, heat insulation plate; 4. sealing plate; 5, heating block; 6, heat-resistant compression spring; 7, heating pipe; 8, ceramic ring. DETAILED DESCRIPTION
[0020] In order to make the purpose of the utility model, technical scheme and advantage more clear and obvious, the utility model is further explained in detail below by combining with the drawings and specific embodiment, obviously, the described embodiment is only a part of the embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.
[0021] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.
[0022] In the description of the utility model, it is understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] Please refer to Figures 1-4The embodiment of the utility model provides a kind of dispersed heating system of additive manufacturing forming cylinder piston, including sealing plate 4, heat insulation plate 3, heating plate frame 2, heating block 5 and base plate 1, the sealing plate 4, heat insulation plate 3, heating plate frame 2 are sequentially connected from below to top, the heating plate frame 2 is multiple partition type structure, place one heating block 5 in each partition, each the heating block 5 is positioned between heat insulation plate 3 and base plate 1, the lower side of each the heating block 5 is positioned and connected with heat insulation plate 3 by heat-resistant compression spring 6, and the upper surface height of each the heating block 5 is slightly higher than the upper surface height of heating plate frame 2, so that when heating plate frame 2 is assembled with base plate 1 above, the upper surface of each heating block 5 is all attached to the lower surface of base plate 1.
[0024] The utility model is thus provided to enable the heating block 5 to be well positioned, so that each heating block 5 can be independently adjusted, and the upper surface of each heating block 5 is attached to the lower surface of the base plate 1 as much as possible, which has a higher fault tolerance and greatly improves the heat conduction efficiency. Furthermore, the heating block 5 can be independently disassembled and replaced during later maintenance, which saves maintenance costs to a certain extent and improves maintenance efficiency.
[0025] Specifically, a heating pipe 7 is embedded in each heating block 5, and the two ends of the heating pipe 7 are connected to the terminal posts through ceramic rings 8. The heating pipe 7 embedded in the heating block 5 serves as a heating structure, which is convenient to install and disassemble and has good insulation, and is safe and reliable when powered on. The heating power of each heating block 5 is 1800W, AC220V, which further improves the heating efficiency.
[0026] The heating blocks 5 are uniformly arranged in the heating plate frame 2 to ensure that the base plate 1 is heated quickly and uniformly.
[0027] A limiting groove for limiting the heat-resistant compression spring 6 is arranged at the corresponding position of the lower surface of each heating block 5 and the upper surface of the heat insulation plate 3, and the stability of the heat-resistant compression spring 6 ensures the stable floating of the heating block 5.
[0028] The heat insulation plate 3 is made of mica, which prevents the heating temperature from being transmitted downward.
[0029] The materials of the heating block 5 and the heating plate frame 2 are both S136H plastic mold steel, which is widely used in high-polish and high-demand inner membrane parts and is related to production, medical treatment, food industry and other industries. This material has the advantages of low maintenance cost, low production cost, excellent polishing property, mechanical processing property, corrosion resistance, strain resistance and good wear resistance. In addition, it has good stability and safety.
[0030] The heating system of the utility model will be further described in detail as follows:
[0031] The heating system is a novel 3D printing heating structure, the bottom structure is a sealing plate 4, a heat insulation plate 3 is fixedly connected above the sealing plate 4, a heating plate frame 2 is fixedly connected above the heat insulation plate 3, the four peripheral gaps of the above three parts are filled with felt, and the felt is fixed by a blocking strip, a batten and a spring inside the heating plate frame 2, the action is to prevent floating metal powder and particles from entering when the piston moves up and down, avoid affecting the structure precision, and prolong the service life.
[0032] The top of the heating system is a base plate 1, which is a direct supporting part of the printed part and plays a crucial role. Figure 3 As shown in the figure, the heating part of the heating system is composed of eight separate heating blocks 5, and each heating block 5 is provided below with a heat-resistant compression spring 6 and a heat insulation plate 3 for support.
[0033] In addition, it should be noted that the utility model can provide a safe and reliable printing environment for the production process, provide convenience for later maintenance and replacement, improve efficiency, and save cost.
[0034] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the utility model examples.
Claims
1. A decentralized heating system for an additively manufactured cylinder piston, characterized in that, The device includes a sealing plate, a heat insulation plate, a heating plate frame, heating blocks, and a substrate. The sealing plate, heat insulation plate, and heating plate frame are connected sequentially from bottom to top. The heating plate frame has a multi-partition structure, with a heating block placed in each partition. Each heating block is positioned between the heat insulation plate and the substrate. The bottom of each heating block is positioned and connected to the heat insulation plate by a heat-resistant compression spring. The upper surface of each heating block is slightly higher than the upper surface of the heating plate frame, so that when the substrate is assembled on top of the heating plate frame, the upper surface of each heating block is in contact with the lower surface of the substrate.
2. The decentralized heating system for the additive manufacturing cylinder piston according to claim 1, characterized in that, Each of the heating blocks has a heating tube embedded inside, and the two ends of the heating tube are connected to the terminal block through ceramic rings.
3. The decentralized heating system for the additive manufacturing cylinder piston according to claim 1, characterized in that, The heating blocks are evenly arranged within the heating plate frame.
4. The decentralized heating system for the additive manufacturing cylinder piston according to claim 1, characterized in that, Each of the heating blocks has a limiting groove on its lower surface and on the upper surface of its heat insulation plate, which is used to limit the movement of the heat-resistant compression spring.
5. The decentralized heating system for the additive manufacturing cylinder piston according to claim 1, characterized in that, The insulation board is made of mica.
6. The decentralized heating system for the additive manufacturing cylinder piston according to claim 1, characterized in that, The heating block and heating plate frame are both made of S136H plastic mold steel.