Powder cylinder and powder sintering printer
By introducing a heat insulation section integrated with the high-temperature and low-temperature sections in the powder cylinder, the problem of uneven heat conduction in powder sintering printers is solved, simplifying the structure of the powder cylinder, reducing processing difficulty, and improving heat utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG FLASHFORGE 3D TECH CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, the separate powder cylinder has a complex structure, is difficult to process, and has high assembly requirements, which leads to uneven heat conduction in powder sintering printers, affecting printing quality and heat power loss.
The powder cylinder adopts an integrated design that connects the high-temperature section, the low-temperature section, and the heat insulation section. The heat insulation section extends circumferentially along the powder cylinder and is thinner than the high-temperature section and the low-temperature section. The heat insulation section reduces heat conduction and achieves an integrated structure.
It effectively reduces the transfer of heat from the high-temperature part to the low-temperature part, improves heat utilization efficiency, simplifies the processing and assembly of the powder cylinder, and reduces processing difficulty.
Smart Images
Figure CN224130481U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of printers, and more specifically, to a powder cylinder and a powder sintering printer. Background Technology
[0002] To achieve good printing results, powder sintering printers require the powder to undergo preheating, heating, sintering, continuous cooling after sintering, and cooling after printing. The powder only needs to be heated to the working temperature before sintering, meaning the upper part of the powder cylinder needs to be heated to a certain temperature and kept warm, while the lower part of the powder cylinder does not need to be too hot. Therefore, the powder cylinder needs to have two temperature zones: an upper heating zone and a lower cooling zone. Excessive heat from the upper heating zone should not be conducted to the lower cooling zone.
[0003] The existing technology uses a separate powder cylinder, which includes a heating section and a cooling section, connected by nylon material, which can prevent heat from being conducted from the heating section to the cooling section. This type of separate powder cylinder has the problems of complex structure, high processing difficulty, and high assembly requirements. Utility Model Content
[0004] The purpose of this application is to provide a powder cylinder and a powder sintering printer to alleviate the technical problems of complex structure, difficult processing and high assembly requirements of the existing separate powder cylinder.
[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0006] Firstly, the powder cylinder provided by this utility model includes a high-temperature section, a low-temperature section, and a heat insulation section;
[0007] The high-temperature part and the low-temperature part are located on both sides of the heat insulation part, and are integrally connected to the heat insulation part;
[0008] The heat insulation part has a heat insulation section extending circumferentially along the powder cylinder;
[0009] The thickness of the heat insulation section is less than the thickness of the high-temperature section and the low-temperature section; the high-temperature section, the low-temperature section and the heat insulation section are made of the same material.
[0010] Furthermore, the inner surfaces of the heat insulation section, the high-temperature section, and the low-temperature section are flush.
[0011] Furthermore, the heat insulation section extends circumferentially around the powder cylinder.
[0012] Furthermore, the heat insulation part has a plurality of heat insulation sections, which are arranged at intervals along the axial direction of the powder cylinder.
[0013] Furthermore, the heat insulation part has a plurality of heat insulation sections, which are arranged at intervals along the circumference of the powder cylinder.
[0014] Furthermore, the heat insulation part has multiple sets of heat insulation sections, which are arranged at intervals along the axial direction of the powder cylinder, and each set includes multiple heat insulation sections, which are arranged at intervals along the circumferential direction of the powder cylinder.
[0015] Furthermore, the thickness of the heat insulation section is set to be 0.15-0.3 times the thickness of the high-temperature section; with the height of the powder cylinder as L, the heat insulation section is set at a distance of 0.05L-0.15L from the top of the high-temperature section.
[0016] Furthermore, the cross-section of the insulation section is rectangular or trapezoidal.
[0017] Furthermore, the powder cylinder also includes a heat insulation reinforcing strip, which surrounds the outer periphery of the heat insulation part; the two sides of the heat insulation reinforcing strip are detachably connected to the high-temperature part and the low-temperature part, respectively.
[0018] Secondly, the powder sintering printer provided by this utility model includes a powder cylinder as described in any of the above claims.
[0019] Based on the above technical solutions, the technical effects achievable by this utility model can be analyzed as follows:
[0020] The powder cylinder provided by this utility model includes a high-temperature section, a low-temperature section, and a heat insulation section; the high-temperature section and the low-temperature section are located on both sides of the heat insulation section and are integrally connected with the heat insulation section; the heat insulation section has a heat insulation segment extending circumferentially along the powder cylinder; the thickness of the heat insulation segment is less than the thickness of the high-temperature section and the low-temperature section; the high-temperature section, the low-temperature section, and the heat insulation section are made of the same material.
[0021] Because the heat insulation section is located between the high-temperature section and the low-temperature section, the heat insulation section extends circumferentially along the powder cylinder and its thickness is less than that of the high-temperature section and the low-temperature section; this reduces the heat loss from the high-temperature section to the low-temperature section by reducing the heat conduction area, thus avoiding the problem of heat loss affecting printing effect and increasing heat power loss.
[0022] In addition, the high-temperature section, heat insulation section and low-temperature section of the powder cylinder are connected as a whole. Based on the heat insulation section which can separate the high-temperature section and the low-temperature section, the powder cylinder can be realized as an integrated structure, which solves the technical problems of complex structure, high processing difficulty and high assembly requirements of the powder cylinder in the prior art. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 1 ;
[0025] Figure 2 for Figure 1 Enlarged view of the central insulation section;
[0026] Figure 3 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 2 ;
[0027] Figure 4 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 3 ;
[0028] Figure 5 for Figure 4 A cross-sectional view of the powder cylinder in the middle;
[0029] Figure 6 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 4 ;
[0030] Figure 7 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 5 ;
[0031] Figure 8 A schematic diagram of the structure of the powder cylinder provided in the embodiments of this application. Figure 6 (Equipped with heat insulation reinforcement strips);
[0032] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;
[0033] Figure 10 Thermodynamic simulation diagram of a powder cylinder without insulation section;
[0034] Figure 11 Thermodynamic simulation diagram of a powder cylinder with a heat insulation section;
[0035] Figure 12 Thermodynamic simulation diagram of a powder cylinder with two rings of heat insulation.
[0036] icon:
[0037] 110-High temperature department;
[0038] 120-low temperature department;
[0039] 130 - Thermal insulation section; 131 - Thermal insulation segment; 132 - First connecting segment; 133 - Second connecting segment;
[0040] 200 - Thermal insulation reinforcement strip; 210 - Protrusion. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0042] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0044] Example 1
[0045] In the existing technology, the split powder cylinder includes a heating section, a cooling section and a nylon section. The heating section and the cooling section are connected by screws and the nylon section is insulated, which presents technical problems such as high processing difficulty and high assembly requirements.
[0046] In view of this, see Figure 1The powder cylinder provided in this embodiment of the present invention includes a high-temperature section 110, a low-temperature section 120, and a heat-insulating section 130. The high-temperature section 110 and the low-temperature section 120 are located on both sides of the heat-insulating section 130 and are integrally connected with the heat-insulating section 130. The heat-insulating section 130 has a heat-insulating segment 131 extending circumferentially along the powder cylinder. The thickness of the heat-insulating segment 131 is less than the thickness of the high-temperature section 110 and the low-temperature section 120. The high-temperature section 110, the low-temperature section 120, and the heat-insulating section 130 are made of the same material. For example, aluminum alloy, stainless steel, or other metal materials can be used.
[0047] Specifically, in this embodiment, see Figure 5 The thickness of the high-temperature section 110 is the same as the thickness of the low-temperature section 120. The thickness of the heat insulation section 131 is set to 0.15-0.3 times the thickness of the high-temperature section 110, for example, 0.15, 0.2, or 0.3 times the thickness of the high-temperature section 110. If the thickness of the heat insulation section 131 is too small, it will lead to insufficient support strength; if the thickness of the heat insulation section 131 is too large, it will lead to failure to achieve the heat insulation effect. Of course, when the thickness of the high-temperature section 110 and the low-temperature section 120 are different, the thickness of the heat insulation section 131 is less than the smaller thickness of the high-temperature section 110 or the low-temperature section 120. Furthermore, with the height of the entire powder cylinder as L, the heat insulation section 131 is set at a distance of 0.05L-0.15L from the top of the high-temperature section 110. The vertical length of the heat insulation section 131 can be set to 12mm-15mm, for example, 12mm, 13mm, 14mm, or 15mm.
[0048] Because the heat insulation section 130 is located between the high-temperature section 110 and the low-temperature section 120, the heat insulation segment 131 of the heat insulation section 130 extends circumferentially along the toner cylinder and its thickness is less than that of the high-temperature section 110 and the low-temperature section 120. This reduces the heat loss from the high-temperature section 110 to the low-temperature section 120 by reducing the heat conduction area, thus avoiding the problem of heat loss affecting printing effect and increasing heat power loss. In addition, the high-temperature section 110, the heat insulation section 130 and the low-temperature section 120 of the toner cylinder are integrally connected. Based on the fact that the heat insulation section 130 can separate the high-temperature section 110 and the low-temperature section 120, the toner cylinder can be realized as a one-piece structure. The processing method is based on the existing technology toner cylinder, which reduces the wall thickness in the area that needs to be insulated to form the heat insulation segment 131, thus solving the technical problems of complex toner cylinder structure, high processing difficulty and high assembly requirements in the existing technology.
[0049] The structure of the powder cylinder is described in detail below:
[0050] In the optional solutions provided by the embodiments of this utility model, see Figure 5 The inner surfaces of the heat insulation section 131, the high-temperature section 110, and the low-temperature section 120 are flush.
[0051] Specifically, the outer wall of the powder cylinder is provided with an inwardly recessed groove, and the groove extends along the circumference of the powder cylinder, forming a heat insulation section 131 between the bottom wall of the groove and the inner wall of the powder cylinder.
[0052] The inner surfaces of the heat insulation section 131, the high-temperature section 110, and the low-temperature section 120 are flush to ensure that there are no depressions on the inner wall of the powder cylinder and to avoid problems such as powder accumulation on the inner wall of the powder cylinder.
[0053] In the optional embodiment of this utility model, the heat insulation section 131 extends around the circumference of the powder cylinder.
[0054] Specifically, see Figure 1 and Figure 2 The heat insulation section 130 includes only one heat insulation segment 131, which surrounds the powder cylinder circumferentially. See also... Figure 10 and Figure 11 ,in Figure 10 Thermodynamic simulation diagram of the powder cylinder without insulation section 131. Figure 11 Thermodynamic simulation diagram of a powder cylinder equipped with a heat insulation section 131 surrounding the circumference of the powder cylinder; all temperatures are in °C. (Comparison) Figure 10 and Figure 11 It can be clearly seen that the powder cylinder equipped with the heat insulation section 131 has the function of reducing the transfer of heat from the high temperature section 110 to the low temperature section 120.
[0055] The heat insulation section 131 surrounds the powder cylinder in a circle, so that the high temperature section 110 and the low temperature section 120 are separated by the heat insulation section 131 in a circle in the circumference of the powder cylinder, thereby improving the heat insulation effect.
[0056] In the optional solutions provided by the embodiments of this utility model, see Figure 3 The heat insulation section 130 has multiple heat insulation sections 131, which are arranged at intervals along the axial direction of the powder cylinder.
[0057] For details, please continue to see Figure 3 The heat insulation section 130 also includes a first connecting section 132, which surrounds the powder cylinder circumferentially; adjacent heat insulation sections 131 are connected by the first connecting section 132, and the thickness of the first connecting section 132 is the same as the thickness of the high-temperature section 110 or the low-temperature section 120. See also... Figure 10 and Figure 12 ,in Figure 10 Thermodynamic simulation diagram of the powder cylinder without insulation section 131. Figure 12 A thermodynamic simulation diagram of a powder cylinder with two heat insulation sections 131 surrounding the circumference of the cylinder; the unit of temperature is °C. (Comparison) Figure 10 and Figure 12It can be clearly seen that the powder cylinder equipped with the heat insulation section 131 has the function of reducing the transfer of heat from the high temperature section 110 to the low temperature section 120.
[0058] Multiple insulation sections 131 are provided to further enhance the insulation effect.
[0059] In the optional solution provided by this utility model embodiment, the heat insulation part 130 has a plurality of heat insulation sections 131, and the plurality of heat insulation sections 131 are arranged at intervals along the circumference of the powder cylinder.
[0060] Specifically, see Figure 6 The heat insulation section 130 further includes a second connecting section 133, which extends circumferentially along the powder cylinder; adjacent heat insulation sections 131 are connected by the second connecting section 133; the thickness of the second connecting section 133 is the same as the thickness of the high-temperature section 110 or the low-temperature section 120. Further, see... Figure 4 There are four heat insulation sections 131, each located on one of the four side walls of the powder cylinder. Alternatively, see... Figure 6 Each side wall of the powder cylinder is equipped with multiple heat insulation sections 131.
[0061] Multiple heat insulation sections 131 arranged at intervals along the circumference of the powder cylinder not only improve the heat insulation effect but also increase the support strength.
[0062] In the optional solution provided by the present utility model embodiment, the heat insulation part 130 has multiple sets of heat insulation sections 131, the multiple sets of heat insulation sections 131 are arranged at intervals along the axial direction of the powder cylinder, and each set includes multiple heat insulation sections 131, the multiple heat insulation sections 131 in each set are arranged at intervals along the circumferential direction of the powder cylinder.
[0063] Specifically, see Figure 7 The heat insulation section 130 has N rows and M columns of heat insulation segments 131. Adjacent rows of heat insulation segments 131 are connected by a first connecting segment 132, and adjacent columns of heat insulation segments 131 in each row are connected by a second connecting segment 133. Alternatively, the heat insulation section 130 has N rows of heat insulation segments 131. Adjacent rows of heat insulation segments 131 are connected by a first connecting segment 132; adjacent columns of heat insulation segments 131 in each row are connected by a second connecting segment 133, and the heat insulation segments 131 in adjacent rows are staggered. For example, the heat insulation segment 131 in the first row is opposite to the second connecting segment 133 in the second row.
[0064] The heat insulation section 130 has multiple heat insulation segments 131, which further enhances the heat insulation effect and support strength.
[0065] In the optional solutions provided by this utility model embodiment, the cross-section of the heat insulation section 131 is rectangular or trapezoidal.
[0066] Specifically, see Figure 5 , Figure 5 The cross-section of the heat insulation section 131 is rectangular. When the cross-section of the heat insulation section 131 is trapezoidal, the heat insulation section 131 still needs to meet the requirement that its inner surface is flush with the inner surfaces of the high-temperature section 110 and the low-temperature section 120.
[0067] The cross-section of the insulation section 131 is rectangular or trapezoidal, which enables the insulation section 131 to have supporting strength.
[0068] In the optional embodiment of this utility model, the powder cylinder further includes a heat insulation reinforcing strip 200, which surrounds the outer periphery of the heat insulation part 130.
[0069] Specifically, the material of the heat insulation reinforcing strip 200 is different from that of the powder cylinder; for example, if the powder cylinder is made of aluminum alloy, the heat insulation reinforcing strip 200 is made of polyetheretherketone (PEEK) or high-temperature resistant nylon. The heat insulation reinforcing strip 200 mainly serves a reinforcing function, and it only needs to be installed around the outer periphery of the heat insulation part 130. Assembly is simple and there are no requirements for its assembly precision.
[0070] The heat insulation reinforcement strip 200 strengthens the powder cylinder to increase its load capacity.
[0071] In the optional solutions provided by the embodiments of this utility model, see Figure 8 The heat insulation reinforcing strip 200 is detachably connected to the high-temperature part 110 and the low-temperature part 120 on both sides.
[0072] Specifically, the two sides of the heat insulation reinforcing strip 200 are detachably connected to the high-temperature part 110 and the low-temperature part 120 respectively by screws; and, see Figure 9 The inner surface of the heat insulation reinforcing strip 200 has a protrusion 210, which extends into the groove and abuts against the outer wall of the heat insulation section 131.
[0073] The heat insulation reinforcing strip 200 is detachably connected to the high-temperature part 110 and the low-temperature part 120 on both sides, which facilitates the installation and removal of the heat insulation reinforcing strip 200.
[0074] Example 2
[0075] The powder sintering printer provided by this utility model includes the powder cylinder described in Embodiment 1, and therefore also possesses all the beneficial effects of Embodiment 1, which will not be repeated here.
[0076] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.
[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A powder cartridge, characterized by, include: High-temperature section (110), low-temperature section (120) and heat insulation section (130); The high-temperature part (110) and the low-temperature part (120) are located on both sides of the heat insulation part (130) and are integrally connected with the heat insulation part (130); The heat insulation part (130) has a heat insulation section (131) extending circumferentially along the powder cylinder; The thickness of the heat insulation section (131) is less than the thickness of the high temperature section (110) and the low temperature section (120); the high temperature section (110), the low temperature section (120) and the heat insulation section (130) are made of the same material.
2. The powder cartridge of claim 1, wherein, The inner surfaces of the heat insulation section (131), the high-temperature section (110), and the low-temperature section (120) are flush.
3. The powder cartridge of claim 2, wherein, The heat insulation section (131) extends around the circumference of the powder cylinder.
4. The powder cartridge of claim 3, wherein, The heat insulation part (130) has a plurality of heat insulation sections (131), which are arranged at intervals along the axial direction of the powder cylinder.
5. The powder cylinder according to claim 2, characterized in that, The heat insulation part (130) has a plurality of heat insulation sections (131) arranged at intervals along the circumference of the powder cylinder.
6. The flour canister of claim 2, wherein, The heat insulation part (130) has multiple sets of heat insulation sections (131), which are arranged at intervals along the axial direction of the powder cylinder, and each set includes multiple heat insulation sections (131), which are arranged at intervals along the circumferential direction of the powder cylinder.
7. The powder cylinder according to any one of claims 1-6, characterized in that, The thickness of the heat insulation section (131) is set to be 0.15-0.3 times the thickness of the high temperature section (110); with the height of the powder cylinder as L, the heat insulation section (131) is set at a distance of 0.05L-0.15L from the top of the high temperature section (110).
8. The mill jar of any one of claims 1-6, wherein, The cross-section of the insulation section (131) is rectangular or trapezoidal.
9. The mill jar of any one of claims 1-6, wherein, The powder cylinder also includes a heat insulation reinforcing strip (200), which surrounds the outer periphery of the heat insulation part (130); the two sides of the heat insulation reinforcing strip (200) are detachably connected to the high temperature part (110) and the low temperature part (120) respectively.
10. A powder sintering printer characterized by, Includes the powder cylinder as described in any one of claims 1-9.