Powder blowing and recycling device

Abstract

The utility model relates to the technical field of additive manufacturing of laser coaxial powder feeding equipment, in particular to a powder blowing and recycling device which comprises a powder collecting box, a powder suction device and a gas collecting box, the powder collecting box is connected with the powder suction device through a pipeline, the gas collecting box is arranged above the powder collecting box, the upper portion of one end of the powder collecting box is fixedly connected with a powder guide plate, and the powder guide plate is located on one side of the gas collecting box. A telescopic frame is installed on the side, away from the powder guide plate, of the upper end face of the gas collecting box, guide rail bodies matched with the telescopic frame are arranged at the two ends of the upper end face of the gas collecting box, and a gas inlet is formed in the top end of the telescopic frame. The guide rail body and the telescopic frame are electrically connected with the guide rail control system and the air inlet control system, and a material level sensor is installed on the lower portion of one end of the powder collecting box. In the product printing process, powder recycling work in the box body is completed through the processes of blowing, recycling, screening and the like, the powder recycling efficiency is improved, powder on the surface of a part can be cleaned while blowing is conducted, and internal defects generated by powder accumulation of a printed product are reduced.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing technology of laser coaxial powder feeding equipment, specifically to a powder blowing and powder recovery device. Background Technology

[0002] Currently, laser coaxial powder feeding additive manufacturing is being used more and more widely. Due to the process characteristics of additive manufacturing, argon protection is required throughout the printing cycle, and the oxygen content in the chamber and the forming state must be continuous and stable.

[0003] When molding large-sized components, due to the large cross-section of the parts, a large amount of powder often accumulates inside the casing over time and cannot be removed or used. At the same time, a large amount of powder will accumulate on the surface of the parts. If it is not cleaned in time, internal defects such as incomplete fusion can easily occur inside the product.

[0004] Therefore, we propose a powder blowing and powder recovery device. Utility Model Content

[0005] The main purpose of this utility model is to provide a powder blowing and powder recovery device. During the printing process, the powder inside the box is recovered through processes such as blowing, recovery, and sieving, and the powder reuse efficiency is improved. At the same time, blowing can clean the powder on the surface of the parts, reduce the internal defects caused by powder accumulation in the printed products, and effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A powder blowing and powder recovery device includes a powder collecting box, a powder suction device, and a gas collecting box. The powder collecting box is connected to the powder suction device through a pipe. A gas collecting box is provided above the powder collecting box. A powder guide plate is fixedly connected to the upper part of one end of the powder collecting box. The powder guide plate is located on one side of the gas collecting box. A telescopic frame is installed on the upper surface of the gas collecting box away from the powder guide plate. Guide rail bodies adapted to the telescopic frame are provided at both ends of the upper surface of the gas collecting box. An air inlet is provided at the top of the telescopic frame.

[0008] The guide rail body, telescopic frame, guide rail control system, and air intake control system are electrically connected.

[0009] By adopting the above technical solution, the powder inside the box is recovered through processes such as blowing, recycling, and sieving during the printing process, and the powder reuse efficiency is improved. Blowing can also clean the powder on the surface of the parts. The cross-shaped exhaust holes distributed at the bottom of the air collection box can reduce powder splashing and reduce internal defects caused by powder accumulation in the printed products.

[0010] Specifically, a material level sensor is installed at the lower part of one end of the powder collection box.

[0011] Specifically, the upper part of the powder collection box is equipped with a vibrating screen and a strong magnet.

[0012] Specifically, the strong magnet is located above the vibrating screen, and the vibrating screen is located between the strong magnet and the material level sensor.

[0013] Specifically, the gas collection box is a horizontally arranged rectangular plate structure.

[0014] The beneficial effects of this utility model are:

[0015] The powder blowing and powder recovery device described in this utility model completes the powder recovery work inside the box through processes such as blowing, recovery, and sieving during the printing process, and improves the powder reuse efficiency. While blowing, it can also clean the powder on the surface of the parts. The bottom of the air collection box has spatially distributed cross-shaped exhaust holes, which can reduce powder splashing and reduce internal defects caused by powder accumulation in the printed products. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a perspective view of the gas collection box of this utility model;

[0019] Figure 3 This is a top view of the gas collection box of this utility model;

[0020] In the diagram: 1. Guide rail body; 2. Telescopic frame; 3. Air inlet; 4. Powder guide plate; 5. Vibrating screen; 6. Strong magnet; 7. Material level sensor; 8. Powder collection box; 9. Powder suction device; 10. Air collection box; 11. Guide rail control system; 12. Air inlet control system. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] As one embodiment of this utility model, such as Figures 1-3 As shown, the powder blowing and powder recovery device of this utility model includes a powder collecting box 8, a powder suction device 9, and a gas collecting box 10. The powder collecting box 8 is connected to the powder suction device 9 through a pipe. The gas collecting box 10 is provided above the powder collecting box 8. A powder guide plate 4 is fixedly connected to the upper part of one end of the powder collecting box 8. The powder guide plate 4 is located on one side of the gas collecting box 10. A telescopic frame 2 is installed on the upper surface of the gas collecting box 10 away from the powder guide plate 4. The upper surface of the gas collecting box 10 is provided with guide rail bodies 1 at both ends that are adapted to the telescopic frame 2. The top of the telescopic frame 2 is provided with an air inlet 3.

[0023] The guide rail body 1, the telescopic frame 2, and the guide rail control system 11 and the air intake control system 12 are electrically connected.

[0024] When in use, the gas field forms a wind wall to prevent powder from splashing to the outside of the platform during blowing. After blowing, the powder falls into the vibrating screen 5 after passing through the powder guide plate 4 and the strong magnet 6 (magnetic screen). The screen control system is started to screen the powder. When the powder accumulates to a certain height after screening, it triggers the material level sensor 7. At this time, the powder suction device 9 starts to work and sucks out the powder from the powder collection box 8. The gas sucked out by the powder suction device 9 is circulated into the box through the exhaust pipe of the powder suction device 9, realizing the closed loop of the entire system.

[0025] This utility model also includes a material level sensor 7 installed at the lower part of one end of the powder collection box 8.

[0026] This utility model also includes a vibrating screen 5 and a strong magnet 6 respectively installed on the upper part of the powder collection box 8.

[0027] The present invention also includes that the strong magnet 6 is located above the vibrating screen 5, the vibrating screen 5 is located between the strong magnet 6 and the material level sensor 7, and the vibrating screen 5 is connected to the screen control system.

[0028] This utility model also includes that the gas collection box 10 is a horizontally arranged rectangular plate structure.

[0029] In use, the bottom of the gas collection box 10 has spatially distributed cross-shaped exhaust holes (to reduce powder splashing), and the telescopic frame 2 has an air inlet 3 in the direction of movement of the parallel guide rail 1. When the gas is working, the gas wind field forms an air wall to prevent the powder from splashing everywhere to the outside of the platform during blowing. After blowing, the powder falls into the vibrating screen 5 after passing through the powder guide plate 4 and the strong magnet 6 (magnetic screen). The screen control system is started to screen the powder. When the powder accumulates to a certain height after screening, it triggers the material level sensor 7. At this time, the powder suction device 9 starts to work and sucks out the powder in the powder collection box 8. The gas sucked out by the powder suction device 9 circulates into the box through the exhaust pipe of the powder suction device 9, realizing the closed loop of the entire system.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A powder blowing and powder recovery apparatus characterized by comprising: Including powder collecting box (8), powder suction device (9) and gas collecting box (10), the powder collecting box (8) is connected with powder suction device (9) through pipeline, the upper portion of the powder collecting box (8) is provided with gas collecting box (10), the upper portion of the one end of the powder collecting box (8) is fixedly connected with powder guide plate (4), the powder guide plate (4) is located on one side of the gas collecting box (10), the upper end surface of the gas collecting box (10) is installed with telescopic frame (2) away from the side of the powder guide plate (4), the upper end surface of the gas collecting box (10) is provided with guide rail body (1) at both ends, which is matched with telescopic frame (2), the top of the telescopic frame (2) is provided with air inlet (3). The guide rail body (1), telescopic frame (2) and guide rail control system (11), air inlet control system (12) are electrically connected.

2. A powder blowing and recovering apparatus according to claim 1, wherein The lower portion of the one end of the powder collecting box (8) is installed with material level sensor (7).

3. A powder blowing and recovering apparatus according to claim 1, wherein The upper portion of the powder collecting box (8) is respectively installed with vibrating screen (5) and strong magnet (6).

4. A powder blowing and recovering apparatus according to claim 3, wherein The strong magnet (6) is located above the vibrating screen (5), and the vibrating screen (5) is located between the strong magnet (6) and the material level sensor (7).

5. The powder blowing and recovering apparatus according to claim 1, wherein The gas collecting box (10) is horizontally arranged in rectangular plate structure.

Images