An efficient and clean apparatus for filling a mold with powder

Abstract

The utility model discloses a kind of efficient clean equipment for filling powder into mould, including positive pressure vertical cabinet, workbench is equipped with base in cabinet, graphite mould is placed on base, mould cover dustproof shell, dustproof shell upper end opening corresponds with mould cavity;Filling pipe sleeve is set on dustproof shell, one end is inserted into cavity, and the other end is for dry powder loading;Press head inserts into filling pipe sleeve and compacts dry powder.The positive pressure vertical cabinet provides positive pressure airflow from top to bottom to isolate external floating dust, and the workbench air hole guides the settlement of the drifting dry powder.The dustproof shell blocks the diffusion of powder and the mixing of graphite dust, and the filling pipe sleeve realizes directional and accurate delivery.The dustproof shell, filling pipe sleeve and press head are made of stainless steel.The equipment cooperates through positive pressure clean environment, dustproof isolation and accurate delivery structure, solves the problem of powder drifting and contamination mixing, ensures the purity of powder, improves the loading efficiency, and meets the needs of mold loading before high-purity ceramic powder hot-pressing sintering.

Description

Technical Field

[0001] This utility model relates to the technical field of dry powder molding equipment, specifically to a highly efficient and clean device for filling powder into a mold. Background Technology

[0002] In the field of hot pressing sintering technology, dry powder loading is a crucial step in mold loading before sintering, affecting loading efficiency and finished product yield. During dry powder loading into the mold, the powder, due to its inherent characteristics such as electrostatic discharge and agglomeration, will adsorb contaminants from the preparation process, such as airborne dust and mold surface contaminants, necessitating further loading technology for hot pressing sintering. Existing dry powder loading operations generally add adhesives during the dry powder forming process to promote the forming of ceramic green bodies. However, for some special ceramic materials, only dry powder can be loaded into the mold. While adding adhesives solves the forming and loading problems, it leads to a decrease in powder purity. Secondly, existing advanced dust-free environment loading and semi-automatic loading require the equipment to operate in conjunction with the workshop's ventilation system. For production processes with high loading frequency, this results in high operating costs and the risk of cross-contamination between material batches, making disassembly and cleaning inconvenient. Therefore, the process of filling the mold with dry powder needs to solve the problem of contamination during the filling process. Especially for high-purity ceramic powder, optimization and improvement are important steps. In the early stage, the dry powder was filled into the mold manually with a measuring spoon and gradually compacted. During the operation, the dry powder was easy to scatter. Since the mold is made of graphite, the graphite powder is also easy to mix with the scattered dry powder, which affects the purity of the sintered body. Therefore, the above problems need to be solved urgently. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a highly efficient and clean device for filling powder into a mold. By setting up a positive pressure vertical cabinet to create a clean operating environment and isolate external dust pollution, the dustproof shell prevents the graphite mold powder from mixing with the filling dry powder. With the help of the filling tube sleeve for precise filling and the pressure head for preliminary compaction, the device solves the problems of powder scattering and easy contamination affecting purity during the dry powder filling process. At the same time, it improves the filling efficiency to meet the needs of filling high-purity ceramic powder before hot pressing and sintering.

[0004] Technical Solution: This utility model provides a highly efficient and clean device for filling powder into a mold, comprising a positive pressure vertical cabinet, a workbench inside the positive pressure vertical cabinet, a base on the workbench, a graphite mold on the base, an open cavity for filling dry powder, a dustproof shell covering the graphite mold, the dustproof shell being disposed on the base, an opening at the upper end of the dustproof shell corresponding to the open cavity; a filling tube sleeve disposed on the dustproof shell, one end of the filling tube sleeve extending into the open cavity along the opening, and the other end for loading dry powder; and a pressure head extending downwards into the filling tube sleeve for initially compacting the dry powder. The dustproof shell covers the outside of the graphite mold, and only the upper opening corresponds to the mold cavity. It can prevent external dust and impurities from falling into the mold and reduce the diffusion of powder into the external environment during the filling process. One end of the filling tube extends into the mold cavity, and the other end serves as a dry powder loading channel, forming a directional conveying path to guide the dry powder accurately into the cavity and avoid the powder from being spilled or deviated during the filling process. The pressure head can extend into the cavity along the filling tube to perform preliminary compaction treatment on the filled dry powder, reduce the gaps between powder particles, and improve the uniformity of the initial density of the powder.

[0005] Furthermore, this application discloses a highly efficient and clean device for filling powder into a mold. The workbench is vertically equipped with rows of ventilation holes. A positive pressure airflow is provided from top to bottom inside the positive pressure vertical cabinet, preventing external airborne dust from entering. The airborne dry powder, after passing through the ventilation holes, remains at the bottom. A positive pressure airflow path is formed inside the positive pressure vertical cabinet, creating a dynamic protective barrier through the directional flow of air. This actively prevents external airborne dust from intruding through equipment gaps or openings, enhancing the airtightness of the clean environment. The vertically arranged ventilation holes on the workbench form dedicated airflow channels. During the filling process, the dry powder raised is propelled by the positive pressure airflow and directionally settles to the bottom of the equipment along the ventilation holes, achieving precise capture and centralized collection of scattered dust.

[0006] Furthermore, this application discloses a highly efficient and clean device for filling powder into a mold. The graphite mold is cylindrical, and the open cavity is a concave cylinder located in the center of the graphite mold. A circular protruding ring is provided at the opening of the open cavity, and this circular protruding ring is located on the upper surface of the graphite mold. The circular protruding ring at the opening of the open cavity, located on the upper surface of the graphite mold, forms a physical limiting structure, which can accurately position the lower end of the filling tube sleeve, ensuring the alignment accuracy between the filling tube sleeve and the open cavity, and preventing powder leakage during filling. The circular protruding ring and the lower edge of the filling tube sleeve can form a close contact, enhancing the sealing between them during filling, reducing the possibility of powder drifting from gaps under positive pressure airflow, and further improving the cleanliness of the filling process.

[0007] Furthermore, this application discloses a highly efficient and clean device for filling powder into a mold. The lower end of the filling tube sleeve extends radially with a supporting ring. The dustproof shell matches the graphite mold and has a circular opening. The filling tube sleeve is placed on the dustproof shell via the supporting ring. The tube body below the supporting ring passes through the opening and extends into the opening cavity. The upper end of the filling tube sleeve has a funnel ring that expands outwards with a gradual transition. The supporting ring at the lower end of the filling tube sleeve extends radially and can be stably placed on the dustproof shell, forming a reliable support structure. The circular opening of the dustproof shell matches the graphite mold, ensuring a precise connection between the filling tube sleeve, dustproof shell, and graphite mold, reducing gaps and providing a structural basis for dust protection. The funnel ring at the upper end of the filling tube sleeve expands outwards with a gradual transition, forming an enlarged feed inlet. When dry powder is loaded into the tube sleeve, it guides the material more smoothly into the tube body, reducing powder spillage and accumulation at the inlet.

[0008] Furthermore, this application discloses a highly efficient and clean device for filling powder into a mold. The pressure head includes a pressure column and a handle. The pressure column is cylindrical and can extend into the tube of the filling sleeve. The handle is located at the upper end of the pressure column. The cylindrical design of the pressure column is adapted to fit the tube of the filling sleeve, allowing it to smoothly extend into the tube and reach the open cavity of the graphite mold. Through the uniform force-bearing surface of the cylindrical pressure column, the filled dry powder is precisely and uniformly initially compacted, ensuring a more regular density distribution of the powder within the cavity. The handle at the upper end of the pressure column provides a convenient grip for the operator, facilitating the application of downward pressure.

[0009] Furthermore, in this application, a highly efficient and clean device for filling powder into a mold includes a pair of second handles symmetrically arranged on the outer side of the dustproof housing. These symmetrically arranged second handles provide operators with dedicated gripping areas, facilitating quick handling, movement, or transport of the dustproof housing.

[0010] Furthermore, this application discloses a highly efficient and clean device for filling powder into a mold, wherein the dustproof shell, filling sleeve, and pressure head are all made of stainless steel. The smooth and flat surface of stainless steel makes it difficult for powder to adhere, and during equipment cleaning, residual powder and stains are more easily removed, facilitating a rapid restoration of the equipment's cleanliness.

[0011] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0012] 1. The high-efficiency and clean equipment for filling powder into molds described in this utility model effectively solves the contamination problem during the dry powder filling process through the synergistic effect of multiple clean protection structures. A positive pressure vertical cabinet forms a top-down positive pressure airflow barrier, preventing external dust from intruding; a dustproof shell covers the graphite mold, reducing powder diffusion and isolating graphite dust from mixing with the filling dry powder; and a filling tube sleeve enables precise directional delivery of dry powder, preventing spillage and deviation. The combination of these three elements provides a clean operating environment for filling high-purity ceramic powder into molds, ensuring powder purity and improving the yield of subsequent sintered green bodies.

[0013] 2. The efficient and clean equipment for filling powder into a mold, as described in this utility model, significantly improves loading efficiency and ease of operation while ensuring cleanliness. The funnel ring at the upper end of the filling tube facilitates rapid loading of dry powder, and the lower end precisely connects with the opening cavity of the graphite mold for efficient conveying. The pressure head can descend along the tube to initially compact the dry powder, reducing processing time in subsequent steps. Furthermore, the stainless steel dustproof shell, filling tube, and pressure head are easy to clean and maintain. The design of the second handle on the dustproof shell and the handle on the pressure head enhances operational convenience. The overall structure is adapted to the mold loading requirements before hot pressing and sintering, balancing cleanliness and efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a highly efficient and clean device for filling powder into a mold according to the present invention.

[0015] Figure 2 This is an exploded schematic diagram of an efficient and clean device for filling powder into a mold, according to the present invention.

[0016] Figure 3 for Figure 2 Enlarged schematic diagram of region A in the middle.

[0017] Explanation of reference numerals on the accompanying drawings:

[0018] 1-Positive pressure vertical cabinet;

[0019] 2-Workbench, 21-Ventilation hole;

[0020] 3-Base;

[0021] 4-Graphite mold, 41-Open cavity, 42-Circular convex ring;

[0022] 5-Dustproof shell, 51-Opening, 52-Second handle;

[0023] 6-Filling sleeve, 61-Supporting ring, 62-Funnel ring;

[0024] 7-Pressure head, 71-Pressure column, 72-Handle. Detailed Implementation

[0025] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figure 1-3 The device shown is a highly efficient and clean device for filling powder into a mold. Its core structure includes a positive pressure vertical cabinet 1, a worktable 2, a base 3, a graphite mold 4, a dustproof shell 5, a filling tube sleeve 6, and a pressure head 7. The components work together to achieve a highly efficient and clean powder filling operation.

[0028] The positive pressure vertical cabinet 1 provides a clean operating environment for the entire equipment. Inside, a vertical workbench 2 is installed, with ventilation holes 21 evenly distributed on the workbench 2. During operation, a positive pressure airflow is formed inside the positive pressure vertical cabinet 1 from top to bottom, which blocks external airborne dust from entering the cabinet through the airflow barrier. Dry powder raised during the filling process is pushed by the airflow and settles directionally to the bottom of the equipment through the ventilation holes 21, avoiding dust dispersion and contamination.

[0029] The workbench 2 is fixed to the base 3, and the graphite mold 4 is placed on the base 3. The graphite mold 4 adopts a cylindrical structure, with a concave cylindrical open cavity 41 in the middle. A circular protruding ring 42 is provided at the opening of the open cavity 41. The circular protruding ring 42 protrudes from the upper end surface of the graphite mold 4, serving as both a positioning structure and enhancing the sealing performance.

[0030] The graphite mold 4 is covered by a dustproof shell 5, which is placed on the base 3. The shape of the dustproof shell 5 matches that of the graphite mold 4, and a circular opening 51 is opened at the top. The opening 51 corresponds vertically to the opening cavity 41 of the graphite mold 4. A pair of second handles 52 are symmetrically installed on the outside of the dustproof shell 5 to facilitate the operator to pick up, put down and move it.

[0031] The filling tube sleeve 6 is placed on the dustproof shell 5 via the supporting ring 61 at its lower end. The supporting ring 61 extends radially along the filling tube sleeve 6, forming a stable support. The tube body on the lower side of the supporting ring 61 passes through the opening 51 of the dustproof shell 5 and precisely extends into the opening cavity 41 of the graphite mold 4. The upper end of the filling tube sleeve 6 forms an outwardly expanding funnel ring 62 through a gradual transition, which facilitates the loading of dry powder.

[0032] The pressure head 7 consists of a pressure column 71 and a handle 72. The pressure column 71 is designed to be cylindrical and can be inserted into the tube body of the filling sleeve 6 until it reaches the open cavity 41 to initially compact the dry powder. The handle 72 is fixed to the upper end of the pressure column 71 to provide the operator with a gripping part for applying force.

[0033] In this embodiment, the dust cover 5, the filling tube sleeve 6, and the pressure head 7 are all made of 316 stainless steel, with a smooth surface that does not easily adhere to powder, making them easy to clean and maintain, and further ensuring the cleanliness of the filling process.

[0034] During operation, the dry powder is loaded into a pre-prepared plastic conical flask. The flask is narrower at the top and wider at the bottom, with the narrow opening matching the funnel ring 62. When filling the flask, the plastic flask is quickly inverted and inserted into the funnel ring 62. The flask is then squeezed to rapidly push the dry powder through the funnel ring 62 into the filling tube 6, which then directionally conveys it to the open cavity 41. After a certain amount has been filled, the handle 72 is used to insert the pressure column 71 into the filling tube 6 to initially compact the dry powder in the open cavity 41. The filling and compaction steps are repeated until the filling is complete. The entire process is carried out in the clean environment of the positive pressure vertical cabinet 1. With the isolation and protection of the dust cover 5, powder dispersion and contaminant contamination are effectively prevented, significantly improving the filling efficiency and powder purity.

[0035] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A highly efficient and clean device for filling powder into a mold, characterized in that: include: A positive pressure vertical cabinet (1) is provided with a workbench (2) inside the positive pressure vertical cabinet (1). A base (3) is provided on the workbench (2). A graphite mold (4) is provided on the base (3). The graphite mold (4) has an open cavity (41) for filling dry powder. The graphite mold (4) is covered with a dustproof shell (5). The dustproof shell (5) is located on the base (3). The upper end of the dustproof shell (5) has an opening (51) corresponding to the open cavity (41). A filling tube sleeve (6) is provided on the dustproof shell (5). One end of the filling tube sleeve (6) extends into the opening cavity (41) along the opening (51), and the other end is used to fill dry powder. The pressure head (7) extends from top to bottom into the filling tube sleeve (6) to initially compact the dry powder.

2. The highly efficient and clean device for filling powder into a mold according to claim 1, characterized in that, The workbench (2) is provided with ventilation holes (21) in a vertical row. The positive pressure vertical cabinet (1) provides positive pressure airflow from top to bottom, which prevents external air dust from entering the positive pressure vertical cabinet (1). The dry powder that floats up remains at the bottom after passing through the ventilation holes (21).

3. The highly efficient and clean device for filling powder into a mold according to claim 2, characterized in that, The graphite mold (4) is cylindrical, and the open cavity (41) is a concave cylindrical shape located in the middle of the graphite mold (4). A circular protruding ring (42) is provided at the opening of the open cavity (41), and the circular protruding ring (42) is located on the upper surface of the graphite mold (4).

4. The highly efficient and clean device for filling powder into a mold according to claim 3, characterized in that, The lower end of the filling tube sleeve (6) extends radially to form a support ring (61). The dustproof shell (5) matches the graphite mold (4), and its opening (51) is circular. The filling tube sleeve (6) is placed on the dustproof shell (5) through the support ring (61). The tube body on the lower side of the support ring (61) passes through the opening (51) and extends into the opening cavity (41). The upper end of the filling tube sleeve (6) is provided with a funnel ring (62) that expands outward through a gradual transition.

5. The highly efficient and clean apparatus for filling powder into a mold according to claim 4, characterized in that, The pressure head (7) includes a pressure column (71) and a handle (72). The pressure column (71) is cylindrical and can extend into the tube body of the filling sleeve (6). The handle (72) is located at the upper end of the pressure column (71).

6. The highly efficient and clean apparatus for filling powder into a mold according to claim 5, characterized in that, The dust cover (5) has a pair of second handles (52) symmetrically arranged on the outside.

7. A highly efficient and clean apparatus for filling powder into a mold according to any one of claims 1-6, characterized in that, The dust cover (5), filling sleeve (6) and pressure head (7) are all made of 316 stainless steel.

Images