Nozzle for metal printing

Abstract

The utility model provides a metal printing nozzle mainly relates to liquid metal printing technical field. A metal printing nozzle, including two symmetry setting's crucible main support board, two the crucible main support board with crucible left side board, crucible right side board, crucible bottom board combination into liquid metal printing crucible, the graphite nozzle board is installed below the crucible bottom board through grooving, the top surface of graphite nozzle board is equipped with several evenly distributed nozzle hole. The utility model has the advantages of: the device adopts high -purity graphite material integrated punching and makes graphite nozzle board, can guarantee the minimum interval of nozzle hole and makes each hole be in a straight line, improves the evenness and precision of nozzle hole distribution, is helpful to the even spray of metal liquid drop, thereby promotes the quality and consistency of printing product.

Description

Technical Field

[0001] This utility model mainly relates to the field of liquid metal printing technology, specifically a nozzle for metal printing. Background Technology

[0002] In the field of liquid metal printing, melt impact printing is widely used due to its unique forming advantages. Currently, nozzles for metal printing are mostly single nozzles or combinations of multiple nozzle arrays, typically machined as a single piece. Existing technologies use a side taper to seal the nozzle to a fixture, but due to the large difference in the coefficients of thermal expansion between the nozzle and the fixture (mostly made of metal), the processing dimensions are limited, and deformation can easily occur, affecting the sealing effect. Therefore, array arrangements are often used. This method easily leads to difficulties in precisely aligning the nozzles in a straight line, and the technical problems of controlling the nozzle spacing affect printing accuracy. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a nozzle for metal printing, achieved through the following technical solution: A nozzle for metal printing includes two symmetrically arranged crucible main support plates, a crucible left side plate, a crucible right side plate, a crucible bottom plate, an electric heating tube, a heat-conducting strip, a nozzle pressure plate, ceramic fiber paper, and a graphite nozzle plate. The two crucible main support plates, together with the crucible left side plate, crucible right side plate, and crucible bottom plate, form a crucible for liquid metal printing. The graphite nozzle plate is installed below the crucible bottom plate through a slot. The top surface of the graphite nozzle plate has several evenly distributed nozzle holes. Several horizontally arranged first reinforcing plates are fixedly installed on the outer side of the crucible main support plates. Several vertically arranged second reinforcing plates are fixedly installed on the outer side of the first reinforcing plates located outside the same crucible main support plate. Metal corner protectors are fixedly installed at the four corners of the crucible main support plates.

[0004] Furthermore, a heat-conducting strip is provided below the graphite nozzle plate to conduct heat from the electric heating tube to heat the graphite nozzle plate.

[0005] Furthermore, a nozzle pressure plate is provided below the heating element to fix the graphite nozzle plate and to provide heat preservation.

[0006] Furthermore, the graphite nozzle plate is made of high-purity graphite material and has an integral perforated structure to ensure that the minimum spacing of the nozzle holes is in a straight line.

[0007] Furthermore, ceramic fiber paper is sandwiched between the bottom plate of the crucible and the graphite nozzle plate, as well as at each connecting part, for sealing and heat insulation.

[0008] Furthermore, the nozzle pressure plate below the bottom plate of the crucible is made of reinforced calcium silicate material, which has both pressing and heat preservation functions.

[0009] Furthermore, the heat-conducting strip is located between the heating element and the graphite nozzle plate to ensure good contact and improve heating efficiency.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This device significantly improves the overall structural strength and stability of the crucible by setting a first horizontal reinforcing plate and a second vertical reinforcing plate on the outside of the main support plate of the crucible, and installing metal corner protectors at the four corners. This effectively prevents deformation caused by high temperature or pressure during the metal printing process and extends the service life of the equipment.

[0011] 2. This device uses high-purity graphite material to integrally perforate the graphite nozzle plate, which can ensure the minimum spacing of the nozzle holes and make each hole a straight line, improving the uniformity and accuracy of the nozzle hole distribution, which helps to uniformly eject metal droplets, thereby improving the quality and consistency of printed products.

[0012] 3. Ceramic fiber paper is sandwiched between the bottom plate of the crucible and the graphite nozzle plate, as well as at each connection point. Meanwhile, the nozzle pressure plate is made of reinforced calcium silicate material. Combined with the heat-conducting strip and the electric heating tube, this not only achieves good sealing and heat preservation effects and reduces heat loss, but also ensures efficient heating of the graphite nozzle plate, improves energy utilization efficiency, and reduces energy consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional view of the overall structure of this utility model; Figure 3 This is a partial cross-sectional view of the nozzle pressure plate of this utility model.

[0014] The following are the labels in the attached diagram: 1. First reinforcing plate; 2. Second reinforcing plate; 3. Metal corner protector; 4. Crucible main support plate; 5. Left side plate of crucible; 6. Right side plate of crucible; 7. Bottom plate of crucible; 8. Heating element; 9. Heat-conducting strip; 10. Nozzle pressure plate; 11. Ceramic fiber paper; 12. Graphite nozzle plate. Detailed Implementation

[0015] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0016] Example: A nozzle for metal printing like Figure 1-3As shown, a nozzle for metal printing has the following specific structure: Two symmetrically arranged crucible main support plates 4, crucible left side plate 5, crucible right side plate 6, crucible bottom plate 7, heating tube 8, heat-conducting strip 9, nozzle pressure plate 10, ceramic fiber paper 11, and graphite nozzle plate 12 are combined to form a liquid metal printing crucible. The graphite nozzle plate 12 is installed below the crucible bottom plate 7 through a slot. The top surface of the graphite nozzle plate 12 has several evenly distributed nozzle holes. Several horizontally arranged first reinforcing plates 1 are fixedly installed on the outside of the crucible main support plates 4. Several vertically arranged second reinforcing plates 2 are fixedly installed on the outside of the first reinforcing plates 1 located outside the same crucible main support plate 4. Metal corner protectors 3 are fixedly installed at the four corners of the crucible main support plates 4.

[0017] The working principle described above is as follows: Two crucible main support plates 4, together with crucible left side plate 5, crucible right side plate 6, and crucible bottom plate 7, form a stable crucible for liquid metal printing, used to hold molten metal liquid. Graphite nozzle plate 12 is installed below crucible bottom plate 7 through slotting, and its top surface has evenly distributed nozzle holes for spraying molten metal to achieve metal printing. A horizontal first reinforcing plate 1 and a vertical second reinforcing plate 2 are installed on the outside of the crucible main support plate 4, and metal corner protectors 3 are provided at the four corners to form a stable frame structure, improve the stability of the overall structure, and increase service life.

[0018] A heat-conducting strip 9 is provided below the graphite nozzle plate 12 to conduct heat from the heating tube 8 to heat the graphite nozzle plate 12. The heat generated by the heating tube 8 is evenly transferred to the graphite nozzle plate 12 through the heat-conducting strip 9, reducing heat loss, improving energy utilization, and avoiding local overheating or insufficient temperature, ensuring stable and uniform heating at the nozzle orifice, and guaranteeing stable spraying of molten metal.

[0019] Below the heating element 8 is a nozzle pressure plate 10, which is used to fix the graphite nozzle plate 12 and to keep it warm. This reduces heat loss downwards and maintains a stable temperature in the nozzle area.

[0020] The graphite nozzle plate 12 is made of high-purity graphite material and has an integral perforated structure, ensuring the minimum spacing of the nozzle holes and that they are in a straight line. The use of high-purity graphite material for integral perforation ensures consistent nozzle hole spacing and alignment, thereby guaranteeing consistent spray trajectory, improving printing accuracy, and meeting the requirements of melt impact printing.

[0021] Ceramic fiber paper 11 is sandwiched between the crucible bottom plate 7 and the graphite nozzle plate 12, as well as at all connecting parts, for sealing and heat insulation. This prevents leakage of molten metal, reduces heat loss, simplifies the sealing structure, and lowers maintenance costs. The nozzle pressure plate 10 below the crucible bottom plate 7 is made of reinforced calcium silicate material, which has both pressing and heat preservation functions.

[0022] The heat-conducting strip 9 is located between the electric heating tube 8 and the graphite nozzle plate 12 to ensure good contact and improve heating efficiency.

[0023] In explaining this utility model, it should be noted that the terms indicating location are only for ease of description and understanding, and are not intended to limit the installation location of specific technical features. Other possible installation methods are not excluded.

[0024] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention 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 the invention.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A nozzle for metal printing, comprising two symmetrically arranged crucible main support plates (4), a crucible left side plate (5), a crucible right side plate (6), a crucible bottom plate (7), an electric heating tube (8), a heat-conducting strip (9), a nozzle pressure plate (10), ceramic fiber paper (11), and a graphite nozzle plate (12), characterized in that: The two crucible main support plates (4) are combined with the crucible left side plate (5), crucible right side plate (6), and crucible bottom plate (7) to form a crucible for liquid metal printing; the graphite nozzle plate (12) is installed below the crucible bottom plate (7) by slotting; the top surface of the graphite nozzle plate (12) is provided with several evenly distributed nozzle holes; several horizontally arranged first reinforcing plates (1) are fixedly installed on the outside of the crucible main support plate (4); several vertically arranged second reinforcing plates (2) are fixedly installed on the outside of the first reinforcing plates (1) located outside the same crucible main support plate (4); and metal corner protectors (3) are fixedly installed at the four corners of the crucible main support plate (4).

2. The nozzle for metal printing according to claim 1, characterized in that: A heat-conducting strip (9) is provided below the graphite nozzle plate (12) to conduct heat from the electric heating tube (8) to heat the graphite nozzle plate (12).

3. The nozzle for metal printing according to claim 2, characterized in that: Below the electric heating tube (8) is a nozzle pressure plate (10) for fixing the graphite nozzle plate (12) and for heat preservation.

4. The nozzle for metal printing according to claim 1, characterized in that: The graphite nozzle plate (12) is made of high-purity graphite material and has an integral perforated structure to ensure the minimum spacing of the nozzle holes and that they are in a straight line.

5. The nozzle for metal printing according to claim 1, characterized in that: Ceramic fiber paper (11) is sandwiched between the crucible bottom plate (7) and the graphite nozzle plate (12), as well as at each connection point, for sealing and heat insulation.

6. The nozzle for metal printing according to claim 1, characterized in that: The nozzle pressure plate (10) below the crucible bottom plate (7) is made of reinforced calcium silicate material.

7. The nozzle for metal printing according to claim 1, characterized in that: The heat-conducting strip (9) is located between the electric heating tube (8) and the graphite nozzle plate (12).

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