Quick-release powder spreading device for powder spreading type metal 3D printing

Abstract

The utility model provides a kind of fast disassembly powder laying device for powder laying type metal 3D printing, it is related to 3D printing powder laying device technical field, including powder laying table, the top of powder laying table is provided with forming area, the top of powder laying table is provided with electric slide rail located forming area both sides, between the top of two electric slide rails is provided with moving frame, the top of moving frame is provided with the telescopic adjusting mechanism that is penetrated to its inboard, the inboard of telescopic adjusting mechanism is provided with the powder laying assembly that extends to its bottom, the top of telescopic adjusting mechanism is provided with the clamping assembly that is clamped with powder laying assembly.The fast disassembly powder laying device for powder laying type metal 3D printing, effectively reduce the influence of powder laying effect due to equipment vibration and other factors, ensure the uniformity and stability of powder laying, improve the forming quality of metal D printing, facilitate quick maintenance when powder laying roller wears, scraper plate is damaged or needs cleaning and disassembly powder laying assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of 3D printing powder spreading devices, and in particular to a quick-release powder spreading device for powder spreading type metal 3D printing. Background Technology

[0002] Metal 3D printing technology, also known as additive manufacturing technology, creates solid parts by adding materials layer by layer. Compared with traditional cutting methods, 3D printing technology can process parts with complex shapes, has a short manufacturing cycle, high material utilization, and high precision. It has broad application prospects in aerospace, automotive, military and biomedical fields.

[0003] A search revealed Chinese Patent Publication No. CN221064453U, which discloses a quick-release powder spreading device for metal 3D printing. The device includes a working chamber, a feeding hopper, a powder spreading component, and a horizontal moving part. The working chamber contains a printing table with a forming area. The powder spreading component is located within the working chamber. In this design, the feeding hopper holds metal powder that meets the requirements for laser printing, and the powder spreading area is controlled by a rolling spreading roller. However, the powder spreading structure is the most easily worn part of the device, especially when printing high-hardness metal powder. Gradual wear during powder spreading can lead to uneven powder thickness, affecting print quality. Furthermore, this structure is difficult to adapt to metal powders of different particle sizes, making it unsuitable for practical applications. Therefore, a quick-release powder spreading device for metal 3D printing is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a quick-release powder-laying device for powder-laying metal 3D printing to solve the problems mentioned in the background.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick-release powder spreading device for powder spreading metal 3D printing includes a powder spreading platform. A forming area is provided on the top of the powder spreading platform. Electric slide rails are provided on both sides of the forming area on the top of the powder spreading platform. A movable frame is provided between the tops of the two electric slide rails. A telescopic adjustment mechanism is provided on the top of the movable frame, extending through to its inner side. A powder spreading component is provided on the inner side of the telescopic adjustment mechanism, extending to its bottom. A locking component is provided on the top of the telescopic adjustment mechanism, engaging with the powder spreading component. The telescopic adjustment mechanism includes an electric telescopic rod, which is fixedly installed on the movable frame and extends through its inner side. A connecting plate is fixedly installed at the output end of the electric telescopic rod. An installation frame located below the connecting plate is movably installed on the inner side of the movable frame. Two dampers and a return spring are fixedly installed between the installation frame and the connecting plate.

[0006] Preferably, the powder spreading assembly includes an embedded frame, which is slidably installed inside the mounting frame and extends to its bottom. A powder spreading roller is rotatably installed on the inner side of the embedded frame. A powder dropping chamber extending through to the inner side is fixedly installed on the top of the embedded frame. A scraper plate extending to its bottom and located behind the powder spreading roller is installed inside the embedded frame by bolt threads.

[0007] Preferably, the engaging assembly includes a fixing frame, and there are two fixing frames which are fixedly installed on the top of the mounting frame. A pin is movably installed on the top of the fixing frame, penetrating into the interior of the mounting frame and engaging with the embedded frame. A push plate located inside the fixing frame is rotatably installed on the outside of the pin. A support spring sleeved on the outside of the pin is fixedly installed between the push plate and the inner top wall of the fixing frame. An engaging protrusion penetrating to the top of the fixing frame is fixedly installed on the outside of the pin.

[0008] Preferably, a support frame is fixedly installed at the bottom of the powder spreading table, and a plurality of casters arranged in a rectangular array are fixedly installed at the bottom of the support frame.

[0009] Preferably, the top of the connecting plate is fixedly installed with guide columns that extend through to the top of the movable frame and are located on both sides of the electric telescopic rod, and guide sliders are fixedly installed on both the left and right sides of the inner wall of the mounting frame.

[0010] Preferably, the top of the embedding frame has an installation hole that matches the powder dispensing compartment.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This quick-release powder-spreading device for metal 3D printing uses an electric telescopic rod in its telescopic adjustment mechanism to control the vertical position of the powder-spreading component. Combined with an electric slide rail that moves the moving frame, it enables powder-spreading operations above the forming area. The damper and return spring between the connecting plate and the mounting frame act as a buffer during powder-spreading, effectively reducing the impact of equipment vibration and other factors on the powder-spreading effect, ensuring uniformity and stability. The powder-spreading roller and scraper plate in the powder-spreading component work together; the powder-spreading roller evenly spreads the metal powder, and the scraper plate then smooths it, controlling the powder layer thickness and improving the forming quality of the metal 3D printing.

[0012] This quick-release powder spreading device for metal 3D printing enables rapid assembly and disassembly of the powder spreading component through a locking mechanism. Simply operate the pin manually, utilizing the elasticity of the support spring and the cooperation of the push plate, to easily engage and disengage the embedded frame from the pin. This eliminates the need for complex tools, greatly simplifying the disassembly and installation process of the powder spreading component. It also facilitates quick maintenance when the powder spreading roller is worn, the scraper plate is damaged, or when cleaning or disassembling the powder spreading component is required, effectively reducing equipment downtime and improving work efficiency. Attached Figure Description

[0013] Figure 1 A schematic diagram of the main structure of a quick-release powder-laying device for powder-laying metal 3D printing provided by this utility model; Figure 2 A side view perspective of the main body structure of a quick-release powder-spreading device for powder-spreading metal 3D printing provided by this utility model; Figure 3 A three-dimensional view of the telescopic adjustment mechanism of a quick-release powder-spreading device for powder-spreading metal 3D printing provided by this utility model; Figure 4 A three-dimensional view of the powder spreading component structure of a quick-release powder spreading device for powder spreading type metal 3D printing provided by this utility model; Figure 5 A three-dimensional view of the locking component structure of a quick-release powder-spreading device for powder-spreading metal 3D printing provided by this utility model.

[0014] Legend: 1. Powder spreading table; 11. Support frame; 12. Casters; 2. Forming area; 3. Electric slide rail; 4. Moving frame; 5. Telescopic adjustment mechanism; 51. Electric telescopic rod; 52. Connecting plate; 521. Guide column; 53. Mounting frame; 531. Guide slider; 54. Damper; 55. Return spring; 6. Powder spreading assembly; 61. Embedded frame; 62. Powder spreading roller; 63. Powder drop hopper; 631. Mounting hole; 64. Scraper plate; 7. Engaging assembly; 71. Fixing frame; 72. Pin; 73. Push plate; 74. Support spring; 75. Engaging protrusion. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] Example like Figures 1 to 5 As shown, this utility model provides a technical solution: a quick-release powder spreading device for powder-spreading metal 3D printing, including a powder spreading platform 1, which serves as the basic support platform for the entire powder spreading device. A support frame 11 is fixedly installed at the bottom of the powder spreading platform 1, and several universal wheels 12 arranged in a rectangular array are fixedly installed at the bottom of the support frame 11. The support frame 11 provides stable support for the entire powder spreading device, and the universal wheels 12 enable the entire powder spreading device to have good mobility, making it convenient to move the device to different positions according to actual printing needs. A forming area 2 is set at the top of the powder spreading platform 1, which provides a specific space for the spreading and forming of metal powder, ensuring that the printed parts can be accurately formed in this area according to the design requirements. Electric slide rails 3 located on both sides of the forming area 2 are fixedly installed at the top of the powder spreading platform 1, and a moving frame 4 is slidably installed between the tops of the two electric slide rails 3. The electric slide rails 3 provide a horizontal moving track for the moving frame 4, and the moving frame 4 can be smoothly reciprocated above the forming area 2 by electric drive.

[0020] A telescopic adjustment mechanism 5 is fixedly installed on the top of the movable frame 4, extending through its inner side. The telescopic adjustment mechanism 5 includes an electric telescopic rod 51, which is fixedly installed on the movable frame 4 and extends through its inner side. A connecting plate 52 is fixedly installed at the output end of the electric telescopic rod 51. Guide posts 521, extending through the top of the connecting plate 52 and located on both sides of the electric telescopic rod 51, are fixedly installed on the top of the connecting plate 52, guiding the movement of the connecting plate 52 and the mounting frame 53. A mounting frame 5, located below the connecting plate 52, is movably installed on the inner side of the movable frame 4. 3. Guide sliders 531 are fixedly installed on both the left and right sides of the inner wall of the mounting frame 53. Two dampers 54 and a return spring 55 are fixedly installed between the mounting frame 53 and the connecting plate 52. This quick-release powder spreading device for metal 3D printing plays an adjustment and buffering role during the powder spreading process by setting the electric telescopic rod 51 in the telescopic adjustment mechanism 5, the dampers 54 between the connecting plate 52 and the mounting frame 53, and the return spring 55. This effectively reduces the impact of equipment vibration and other factors on the powder spreading effect and ensures the uniformity and stability of the powder spreading.

[0021] A powder spreading component 6 extending to its bottom is movably mounted on the inner side of the telescopic adjustment mechanism 5. The powder spreading component 6 includes an embedded frame 61, which is slidably mounted inside the mounting frame 53 and extends to its bottom. A guide slider 531 is slidably connected to the embedded frame 61, and the guide slider 531 improves the stability of the embedded frame 61. As the main load-bearing structure of the powder spreading component 6, a powder spreading roller 62 is rotatably mounted on the inner side of the embedded frame 61. The powder spreading roller 62 spreads the metal powder falling from the powder drop chamber 63 evenly on the forming area 2 through its own rotation. A powder drop chamber 63 is fixedly installed on the top of the frame 61, extending through its inner side, for storing metal powder. The top of the frame 61 has a mounting hole 631 that matches the powder drop chamber 63. Inside the frame 61, a scraper plate 64 extending to its bottom and located behind the powder spreading roller 62 is installed by bolt threads. By setting the powder spreading roller 62 and scraper plate 64 in the powder spreading assembly 6 to cooperate with each other, the powder spreading roller 62 spreads the metal powder evenly, and the scraper plate 64 then flattens it, which can control the thickness of the powder layer and improve the forming quality of metal 3D printing.

[0022] The top of the telescopic adjustment mechanism 5 is fixedly equipped with a locking component 7 that engages with the powder spreading component 6. The locking component 7 includes a fixing frame 71. There are two fixing frames 71, which are fixedly installed on the top of the mounting frame 53. A pin 72 is movably installed on the top of the fixing frame 71, penetrating into the interior of the mounting frame 53 and engaging with the embedded frame 61. A push plate 73 located inside the fixing frame 71 is rotatably installed on the outside of the pin 72. A support spring 74 is fixedly installed between the push plate 73 and the inner top wall of the fixing frame 71, sleeved on the outside of the pin 72. A penetrating through the top of the fixing frame 71 is fixedly installed on the outside of the pin 72. The quick-release powder spreading device for metal 3D printing features a locking protrusion 75. This device enables rapid assembly and disassembly of the powder spreading component 6 via the locking assembly 7. Simply operate the pin 72 manually, utilizing the elasticity of the support spring 74 and the cooperation of the push plate 73 to easily engage and disassemble the embedded frame 61 with the pin 72. This eliminates the need for complex tools, greatly simplifying the disassembly and installation process of the powder spreading component 6. It also facilitates quick maintenance when the powder spreading roller 62 is worn, the scraper plate 64 is damaged, or cleaning or disassembly of the powder spreading component 6 is required, effectively reducing equipment downtime and improving work efficiency.

[0023] The working process of this utility model: Step 1: The powder spreading table 1 serves as the basic supporting structure. The forming area 2 set on its top is the metal powder forming area. The electric slide rails 3 on both sides are used to drive the moving frame 4 to make horizontal reciprocating motion. The moving frame 4 can move smoothly on the electric slide rails 3, thereby driving the powder spreading component 6 on it to move and spread powder above the forming area 2. Step 2: The electric telescopic rod 51 in the telescopic adjustment mechanism 5 is fixedly installed on the movable frame 4. The connecting plate 52 connected to its output end can move vertically with the extension and retraction of the electric telescopic rod 51, thereby driving the connected mounting frame 53 and powder spreading assembly 6 to move. The guide post 521 at the top of the connecting plate 52 plays a guiding role to ensure the stability of the movement. The guide slider 531 on the inner wall of the mounting frame 53 also helps the mounting frame 53 to move smoothly. The damper 54 and the return spring 55 between the connecting plate 52 and the mounting frame 53 can play a buffering and resetting role during the powder spreading process, reducing the impact of vibration on the powder spreading effect. Step 3: The embedded frame 61 in the powder spreading assembly 6 is slidably installed inside the mounting frame 53 and extends to its bottom. The powder spreading roller 62, which is rotatably installed inside the embedded frame 61, is used to evenly spread the metal powder on the forming area 2. The powder drop chamber 63 fixed at the top of the embedded frame 61 is used to store the metal powder. The powder can fall through the powder drop chamber 63 onto the powder spreading roller 62 and spread in the forming area 2. The scraper plate 64, which extends to the bottom of the embedded frame 61 and is located behind the powder spreading roller 62, is used to scrape the powder spread by the powder spreading roller 62 to ensure that the powder layer thickness is uniform. When it is necessary to adjust the powder spreading assembly... When component 6 is disassembled or installed, the pin 72 in the locking assembly 7 can penetrate into the mounting frame 53 and engage with the embedded frame 61, thereby fixing the powder spreading assembly 6 to the mounting frame 53. The push plate 73 and the support spring 74 rotatably mounted on the outside of the pin 72 cooperate to keep the pin 72 engaged with the embedded frame 61 under the action of the support spring 74. The locking protrusion 75 on the outside of the pin 72 facilitates manual operation of the pin 72. When the pin 72 is pulled up and rotated, the locking protrusion 75 is located at the top of the fixed frame 71 to prevent the pin 72 from resetting, thus achieving quick and convenient engagement and disengagement.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release powder spreading device for powder-spreading metal 3D printing, comprising a powder spreading table (1), a forming area (2) being provided on the top of the powder spreading table (1), electric slide rails (3) being provided on both sides of the forming area (2) on the top of the powder spreading table (1), and a movable frame (4) being provided between the tops of the two electric slide rails (3), characterized in that: The top of the mobile frame (4) is provided with a telescopic adjustment mechanism (5) that extends through to its inner side. The inner side of the telescopic adjustment mechanism (5) is provided with a powder spreading component (6) that extends to its bottom. The top of the telescopic adjustment mechanism (5) is provided with a locking component (7) that engages with the powder spreading component (6). The telescopic adjustment mechanism (5) includes an electric telescopic rod (51), which is fixedly installed on the movable frame (4) and extends through its inner side. A connecting plate (52) is fixedly installed at the output end of the electric telescopic rod (51). A mounting frame (53) located below the connecting plate (52) is movably installed on the inner side of the movable frame (4). Two dampers (54) and a return spring (55) are fixedly installed between the mounting frame (53) and the connecting plate (52).

2. The quick-release powder-laying device for powder-laying metal 3D printing according to claim 1, characterized in that: The powder spreading assembly (6) includes an embedded frame (61) which is slidably installed inside the mounting frame (53) and extends to its bottom. A powder spreading roller (62) is rotatably installed on the inner side of the embedded frame (61). A powder dropping chamber (63) extending through to its inner side is fixedly installed on the top of the embedded frame (61). A scraper plate (64) extending to its bottom and located behind the powder spreading roller (62) is installed inside the embedded frame (61) by bolt threads.

3. The quick-release powder-laying device for powder-laying metal 3D printing according to claim 2, characterized in that: The engaging assembly (7) includes a fixed frame (71), two fixed frames (71) are fixedly installed on the top of the mounting frame (53), and a pin (72) is movably installed on the top of the fixed frame (71) through the interior of the mounting frame (53) and engaging with the embedded frame (61). A push plate (73) located inside the fixed frame (71) is rotatably installed on the outside of the pin (72). A support spring (74) sleeved on the outside of the pin (72) is fixedly installed between the push plate (73) and the inner top wall of the fixed frame (71). An engaging protrusion (75) through the top of the fixed frame (71) is fixedly installed on the outside of the pin (72).

4. The quick-release powder-laying device for powder-laying metal 3D printing according to claim 1, characterized in that: The bottom of the powder spreading table (1) is fixedly installed with a support frame (11), and the bottom of the support frame (11) is fixedly installed with a number of universal wheels (12) arranged in a rectangular array.

5. The quick-release powder-laying device for powder-laying metal 3D printing according to claim 1, characterized in that: The top of the connecting plate (52) is fixedly installed with guide columns (521) that extend through to the top of the movable frame (4) and are located on both sides of the electric telescopic rod (51). Guide sliders (531) are fixedly installed on both the left and right sides of the inner wall of the mounting frame (53).

6. The quick-release powder-laying device for powder-laying metal 3D printing according to claim 2, characterized in that: The top of the embedded frame (61) is provided with an installation hole (631) that is compatible with the powder drop container (63).

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