SLS3D printing post-processing integrated equipment

Abstract

The utility model discloses SLS3D printing post-processing integrated equipment, and belongs to the technical field of additive manufacturing. Comprising an outer cover assembly, a forming cylinder assembly, a rotary powder blowing assembly, a rotary powder mixing assembly, a powder screening assembly and an HEPA filter assembly, the right side of the upper surface of the interior of the outer cover assembly is fixedly connected with the forming cylinder assembly, and the rotary powder blowing assembly is arranged above the left side of the interior of the outer cover assembly; the rotary powder mixing assembly is fixedly connected to the left side of the outer side wall of the outer cover assembly; according to the equipment, through the highly-integrated structural design, traditional dispersed SLS printing post-treatment processes (such as powder cleaning, screening, powder mixing and dust filtering) are integrated into closed integrated operation, and the treatment efficiency and safety are remarkably improved. And through the linkage design of the forming cylinder assembly and the lead screw guide rail driving mechanism, finished products and redundant powder are automatically ejected out under the negative pressure environment formed by the HEPA filter assembly, and the operation risk of manual intervention is reduced.

Description

Technical Field

[0001] This utility model relates to additive manufacturing technology, and more particularly to an integrated SLS3D printing post-processing equipment. Background Technology

[0002] SLS 3D printing post-processing technology is used to clean the printed parts from their loose powder coating. This involves processes such as powder cleaning, sieving, and mixing. The parts also need to be placed in a high-pressure airflow for surface finishing.

[0003] Defects and shortcomings of existing technology:

[0004] In addition to manual operation of the above processes, existing post-processing equipment on the market is mostly single-function. Powder cleaning, sieving, mixing and surface finishing all require a separate piece of equipment, which takes up a lot of space on-site. For customers with limited space, post-processing can only be outsourced, which is not conducive to quick completion.

[0005] To address these shortcomings, this invention will change the status quo by integrating powder cleaning, sieving, mixing, and surface finishing into one unit, while also compressing the equipment space to ensure that the equipment can perform the maximum function with the smallest volume. Utility Model Content

[0006] Purpose of the utility model: The purpose of this utility model is to provide a device that can perform the functions of several devices on the market with one device, achieving maximum functionality with a smaller footprint; another purpose of this utility model is to provide a device equipped with a HEPA filter to effectively isolate dust from harming the operator.

[0007] Technical solution: An integrated SLS 3D printing post-processing device includes an outer casing assembly, a forming cylinder assembly, a rotary powder blowing assembly, a rotary powder mixing assembly, a powder sieving assembly, and a HEPA filter assembly. The forming cylinder assembly is fixedly connected to the right side of the inner upper surface of the outer casing assembly. The rotary powder blowing assembly is located on the upper left side of the inner surface of the outer casing assembly. The rotary powder mixing assembly is fixedly connected to the left side of the outer side wall of the outer casing assembly. The powder sieving assembly is fixedly connected to the left side of the inner surface of the outer casing assembly, below the rotary powder mixing assembly. The HEPA filter assembly is located on the upper left side of the outer side wall of the outer casing assembly.

[0008] Furthermore, the front surface of the outer cover assembly has an operation window, and the right end of the exhaust fan is fixedly connected to the left side of the outer side wall of the outer cover assembly, extending through to the left side of the outer cover assembly, and a HEPA filter is fixedly connected thereto.

[0009] Furthermore, a printing platform is provided on the front surface of the molding cylinder assembly, a lead screw guide rail drive mechanism is fixedly connected to the right side of the front surface of the molding cylinder assembly, and four cylinder walls are fixedly connected to the outer side wall of the molding cylinder assembly.

[0010] Furthermore, the rotary powder blowing assembly includes a rotary motor, the front end of which is fixedly connected to a rotary screen barrel, and a high-pressure air gun nozzle is provided on the front surface of the rotary screen barrel inside the outer cover assembly.

[0011] Furthermore, the powder screening assembly includes a vibration component.

[0012] The upper surface is provided with a perforated screen, and a recycling bin is provided on the left side of the vibration assembly.

[0013] Furthermore, the rotary powder mixing assembly includes a second rotary motor, which is fixedly connected to the left side of the inner side of the outer cover assembly. The left end of the output end of the second rotary motor extends through to the outer side wall of the outer cover assembly and is fixedly connected to a second recycling bin.

[0014] Beneficial Effects: This equipment, through its highly integrated structural design, integrates the traditionally fragmented SLS printing post-processing workflow (such as powder cleaning, sieving, powder mixing, and dust filtration) into a closed-loop operation, significantly improving processing efficiency and safety. The linkage design of the forming cylinder assembly and the lead screw guide drive mechanism automatically ejects the finished product and excess powder under the negative pressure environment created by the HEPA filter assembly, reducing the operational risks associated with manual intervention. The rotary powder blowing assembly, through the synergistic action of the rotating screen barrel and the high-pressure air gun nozzle, achieves comprehensive powder cleaning of the product through dynamic rotation, not only significantly shortening processing time but also ensuring uniform surface finish. The powder sieving assembly employs a graded filtration mechanism using vibration and a porous screen to efficiently separate recyclable powder from agglomerated impurities. The rotary powder mixing assembly achieves uniform mixing of new and old powders by driving the recovery barrel. The fully automated process avoids material loss and cross-contamination. In terms of environmental protection, the closed-loop design of the HEPA filter assembly strictly controls dust within the equipment within a sealed system, and the negative pressure environment effectively inhibits dust diffusion, preventing the harm of nanoscale powders to the environment and operators from the source. This integrated process achieves "zero dust exposure" throughout the entire process from powder cleaning to powder mixing through automation and closed-loop management, balancing production efficiency and industrial safety standards, and providing reliable technical support for green manufacturing.

[0015] This equipment establishes a complete material recycling chain through an innovative powder recovery and regeneration system, significantly reducing printing costs and improving finished product quality. During the powder sieving stage, the efficient collaboration between the vibrating component and the porous screen precisely separates recyclable powder from impurities, ensuring powder flowability and printability. The rotating powder mixing component, through multi-dimensional motion, thoroughly mixes new and old powders, solving the problem of uneven composition in traditional powder mixing processes. This improves the consistency of the mechanical properties of subsequent printed parts. Furthermore, the high-pressure air gun nozzle of the rotating powder blowing component supports flexible adjustment of airflow parameters, allowing for directional powder cleaning of complex structures, preventing residual powder from covering surface details and ensuring dimensional accuracy and surface integrity of the finished product. The closed-loop powder sieving and mixing process effectively isolates external environmental interference, maintaining powder dryness and purity, and reducing thermal stress defects during printing. This system, through end-to-end powder recycling management, significantly improves material utilization while ensuring that the printing performance of recycled powder is close to that of virgin powder. It achieves a dual breakthrough in efficient resource utilization and product quality, providing a technological model for sustainable manufacturing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the molding cylinder assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rotary powder blowing assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the rotary powder mixing component of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the powder screening component of this utility model;

[0021] Figure 6 This is a cross-sectional structural diagram of the outer cover assembly of this utility model.

[0022] In the diagram: 1. Outer casing assembly; 2. Molding cylinder assembly; 3. Rotary powder blowing assembly; 4. Rotary powder mixing assembly; 5. Powder sieving assembly; 6. HEPA filter assembly; 1-1. Operation window; 2-1. Screw guide rail drive mechanism; 2-2. Printing platform; 2-3. Surrounding cylinder walls; 3-1. Rotary motor one; 3-2. Rotary screen barrel; 3-3. High-pressure air gun nozzle; 4-1. Rotary motor two; 5-1. Vibration assembly; 5-2. Perforated screen; 5-3. Recycling bin one; 5-4. Recycling bin two; 6-1. Exhaust fan; 6-2. HEPA filter. Detailed Implementation

[0023] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example:

[0025] like Figures 1-5 As shown, an integrated SLS 3D printing post-processing device is provided, including an outer casing assembly 1, a forming cylinder assembly 2, a rotary powder blowing assembly 3, a rotary powder mixing assembly 4, a powder sieving assembly 5, and a HEPA filter assembly 6. The forming cylinder assembly 2 is fixedly connected to the right side of the inner upper surface of the outer casing assembly 1. The rotary powder blowing assembly 3 is located on the upper left side of the inner surface of the outer casing assembly 1. The rotary powder mixing assembly 4 is fixedly connected to the left side of the outer side wall of the outer casing assembly 1. The powder sieving assembly 5 is fixedly connected to the left side of the inner surface of the outer casing assembly 1, below the rotary powder mixing assembly 4. The HEPA filter assembly 6 is located on the upper left side of the outer side wall of the outer casing assembly 1. An operation window 1-1 is provided on the front surface of the outer casing assembly 1. An exhaust fan 6-1 is fixedly connected to the left side of the outer side wall of the outer casing assembly 1. The right end of the exhaust fan 6-1 extends through to the left side of the outer casing assembly 1 and is fixedly connected to a HEPA filter 6-2. The forming cylinder assembly 2... The front surface is provided with a printing platform 2-2. The right side of the front surface of the forming cylinder assembly 2 is fixedly connected with a lead screw guide rail drive mechanism 2-1. The outer side wall of the forming cylinder assembly 2 is fixedly connected with a surrounding cylinder wall 2-3. The rotary powder blowing assembly 3 includes a rotary motor 3-1. The front end of the output end of the rotary motor 3-1 is fixedly connected with a rotary screen 3-2. The front surface of the rotary screen 3-2, located inside the outer cover assembly 1, is provided with a high-pressure air gun nozzle 3-3. The powder sieving assembly 5 includes a vibration assembly 5-1. The upper surface of the vibration assembly 5-1 is provided with a perforated screen 5-2. The left side of the vibration assembly 5-1 is provided with a recycling bin 5-3. The rotary powder mixing assembly 4 includes a rotary motor 4-1. The rotary motor 4-1 is fixedly connected to the left side inside the outer cover assembly 1. The left end of the output end of the rotary motor 4-1 extends through to the outer side wall of the outer cover assembly 1 and is fixedly connected with a recycling bin 5-4.

[0026] The equipment includes an outer casing assembly 1, a forming cylinder assembly 2, a rotary powder blowing assembly 3, a rotary powder mixing assembly 4, a powder sieving assembly 5, and a HEPA filter assembly 6. When the outer casing assembly 1 is closed, the HEPA filter assembly 6 is activated first. The HEPA filter assembly 6 consists of an exhaust fan 6-1 and a HEPA filter 6-2, which creates negative pressure inside the equipment. Then, by activating the forming cylinder assembly 2, the printed product and excess powder are ejected from the forming cylinder assembly 2. The forming cylinder assembly 2 consists of a lead screw guide drive mechanism 2-1, a printing platform 2-2, and surrounding cylinder walls 2-3. The lead screw guide drive mechanism 2-1 can raise the printing platform 2-2, allowing the product and excess powder to be ejected. The operator can then remove the product from the powder through the operation window 1-1 and place it inside the rotary powder blowing assembly 3. The rotary powder blowing assembly 3 includes a rotary motor 3-1, a rotating screen 3-2, and a high-pressure air gun nozzle 3-3. The rotary motor 3-1 drives the rotating screen 3-2, causing the product to continuously rotate inside. The high-pressure air gun nozzle 3-3 applies high-pressure gas to the product surface, achieving powder cleaning and surface smoothing. Excess powder is then pushed into the powder sieving assembly 5 for filtration. The powder sieving assembly 5 includes a vibrating assembly 5-1, a porous screen 5-2, and a collection bin 5-3. Reusable powder is sieved into the collection bin 5-3, isolating clumped printing impurities. After sieving, the powder is placed in the collection bin 5-3. The operator mixes it with new powder in a specific ratio, and then activates the rotary mixing assembly 4 to thoroughly mix the old and new powder. The rotary mixing assembly 4 includes a rotary motor 4-1 and a collection bin 5-4. After mixing, the powder in the collection bin 5-4 can be used for the next printing job.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An integrated SLS 3D printing post-processing device, comprising an outer casing assembly (1), a molding cylinder assembly (2), a rotary powder blowing assembly (3), a rotary powder mixing assembly (4), a powder sieving assembly (5), and a HEPA filter assembly (6), characterized in that: The molding cylinder assembly (2) is fixedly connected to the right side of the inner upper surface of the outer cover assembly (1). The rotating powder blowing assembly (3) is arranged on the upper left side of the inner side of the outer cover assembly (1). The rotating powder mixing assembly (4) is fixedly connected to the left side of the outer side wall of the outer cover assembly (1). The powder screening assembly (5) is fixedly connected to the left side of the inner side of the outer cover assembly (1) below the rotating powder mixing assembly (4). The HEPA filter assembly (6) is arranged on the upper left side of the outer side wall of the outer cover assembly (1).

2. The integrated SLS 3D printing post-processing equipment according to claim 1, characterized in that: An operation window (1-1) is provided on the front surface of the outer cover assembly (1). An exhaust fan (6-1) is fixedly connected to the left side of the outer wall of the outer cover assembly (1). The right end of the exhaust fan (6-1) extends through to the left side of the outer cover assembly (1) and is fixedly connected to a HEPA filter (6-2). The exhaust fan (6-1) and the HEPA filter (6-2) together form the HEPA filter assembly (6).

3. The integrated SLS 3D printing post-processing equipment according to claim 1, characterized in that: The front surface of the molding cylinder assembly (2) is provided with a printing platform (2-2), the right side of the front surface of the molding cylinder assembly (2) is fixedly connected with a lead screw guide rail drive mechanism (2-1), and the outer side wall of the molding cylinder assembly (2) is fixedly connected with a four-sided cylinder wall (2-3).

4. The integrated SLS 3D printing post-processing equipment according to claim 1, characterized in that: The rotary powder blowing assembly (3) includes a rotary motor (3-1), and a rotary screen barrel (3-2) is fixedly connected to the front end of the output end of the rotary motor (3-1). A high-pressure air gun nozzle (3-3) is provided on the front surface of the rotary screen barrel (3-2) inside the outer cover assembly (1).

5. The integrated SLS 3D printing post-processing device according to claim 1, characterized in that: The powder screening component (5) includes a vibration component (5-1), the upper surface of the vibration component (5-1) is provided with a perforated screen (5-2), and a recycling bin (5-3) is provided on the left side of the vibration component (5-1).

6. The integrated SLS 3D printing post-processing device according to claim 1, characterized in that: The rotary mixing component (4) includes a rotary motor (4-1), which is fixedly connected to the left side of the inner side of the outer cover component (1). The left end of the output end of the rotary motor (4-1) extends through to the outer side wall of the outer cover component (1) and is fixedly connected to a recycling bin (5-4).

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