A quantitatively adjustable 3D printing powder spreading structure
By introducing a combination structure of a fixed plate, a moving component, and a leveling component into the 3D printing equipment, and using a roller to push and actuate the closed plate to control its movement, a quantitatively adjustable powder drop is achieved. This solves the problems of uneven powder drop and poor precision in the existing technology, and improves printing accuracy and surface quality.
Patent Information
- Application Number
- CN202423273669.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing 3D printing equipment suffers from material leakage in its powder spreading devices, leading to increased printing costs. Furthermore, the powder feeding speed cannot be precisely controlled or adjusted, making it unsuitable for printing various products. Therefore, a quantitatively adjustable 3D printing powder spreading technology is needed to address these shortcomings and achieve high efficiency. This paper proposes a simple, quantitatively adjustable 3D printing powder spreading device with a quantitatively adjustable powder spreading structure.
It adopts a combination structure of fixed plate, moving component, quantitative powder dispensing component and leveling component. The powder is pushed by a circular roller to assist in leveling, and the quantitative powder drop can be adjusted. The movement of the closed plate is controlled by a toggle component, and the powder amount is adjusted by a rotary drive device to ensure uniformity and accuracy.
It achieves efficient, compact, and easy-to-use structure. The amount of powder falling can be adjusted by controlling the rotation speed of the dispensing brush and the dispensing bristles. It solves the problems of uneven sand distribution and large differences in surface quality in the existing technology, and realizes uniform powder spreading and precise control.
Smart Images
Figure CN223605040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to 3D printing powder spreading structure's technical field, especially in kind of quantitative adjustable 3D printing powder spreading structure. BACKGROUND
[0002] 3D printing, also known as rapid prototyping, additive manufacturing, is a kind of technology based on 3D data model file, using photosensitive resin, powdered plastic or metal materials, through layer by layer printing to construct object. Before outputting 3D data model to 3D printer, 3D model needs to be layered, cut into hundreds of thousands of thin layers. Then output the data file describing these thin layers to the printer, 3D printer prints layer by layer until the entire shape is stacked into shape.
[0003] The device that realizes the above-mentioned 3D printing technology is called powder 3D printing equipment, and the powder spreading device used in powder 3D printing equipment usually falls freely on the printing platform by using the gravity of powder itself. There are different degrees of material leakage phenomenon in the printing process, which increases the printing cost and affects the stability of the equipment. Some powder spreading devices use vibration to make powder fall and lay on the workbench. This sand falling method cannot accurately control the sand falling amount, and the size of instantaneous powder falling amount cannot be guaranteed to be uniform, which leads to large differences in printing product precision, surface quality, etc. The sand falling speed of each powder spreading structure cannot be adjusted, and it cannot adapt to the printing of various products. UTILITY MODEL CONTENT
[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a quantitative adjustable 3D printing powder spreading structure with simple structure and convenient use, which can be assisted by a circular roller to push and lay flat.
[0005] The technical scheme adopted by the utility model is: the utility model discloses a fixed plate, a moving assembly arranged on the fixed plate, a quantitative powder outlet assembly in sliding cooperation with the moving assembly, and a laying assembly arranged on one side of the quantitative powder outlet assembly, the quantitative powder outlet assembly comprises a moving seat, a distribution box, a distribution hopper, a distribution brush and a closing plate, the moving seat is in sliding cooperation with the moving assembly, the upper portion of the distribution box is formed with a storage cavity, the middle portion of the storage cavity is rotationally connected with a distribution roller, the distribution hopper is arranged at the lower portion of the storage cavity, the lower portion of the distribution hopper is formed with a material leakage groove, the distribution brush is rotationally connected in the material leakage groove, the closing plate is in sliding cooperation with the bottom of the distribution box, and the distribution box is provided with a pushing piece for driving the closing plate to move forward and backward.
[0006] Further, the moving assembly comprises two slide rails arranged on the fixed plate, a moving driving device arranged on one side of one of the slide rails, and a transmission screw rod connected with a movable end of the moving driving device, the transmission screw rod is in threaded cooperation with the moving seat, and slide rod seats are arranged at two ends of the other slide rail and in sliding cooperation with the moving seat.
[0007] Further, the flattening assembly comprises a fixed box fixedly connected with the moving seat, a material rolling roller rotatably connected to the middle part of the fixed box, and a roller brush arranged in the fixed box, the fixed box is provided with a pressing block, the roller brush is in sliding cooperation with the pressing block, and the roller brush is in contact cooperation with the material rolling roller.
[0008] Further, the material distributing box is provided with an extending plate, the extending plate is fixedly connected with a material distributing driving device, the material distributing driving device is connected with the material distributing roller, a middle part of the material storage cavity is provided with a slot for powder falling, and the material distributing roller is formed with a plurality of convex edges matched with the slot.
[0009] Further, an upper part of the material distributing box is formed with a clamping groove, the pushing piece comprises a first connecting rod, a second connecting rod and an electromagnet, the first connecting rod is fixedly connected with the middle part of the material distributing box, the electromagnet is in sliding cooperation with the clamping groove, an upper part of the second connecting rod is rotatably connected with the electromagnet, a middle part of the second connecting rod is rotatably connected with the first connecting rod, and a bottom part of the second connecting rod is rotatably connected with the closing plate.
[0010] Further, the material distributing funnel gradually reduces in width from top to bottom.
[0011] Further, the moving seat is provided with a rotating driving seat, and the rotating driving seat drives the material distributing brush to rotate through a transmission piece.
[0012] The utility model discloses a compact structure and convenient use, can adjust the powder falling amount through the rotation speed of the material distributing brush and the material distributing roller. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structure schematic diagram of the utility model;
[0014] Figure 2 It is the structure schematic diagram of the fixed plate and the moving assembly of the utility model;
[0015] Figure 3 is the structure diagram of the quantitative powder assembly and the poking piece of the utility model;
[0016] Figure 4 is the sectional view of the quantitative powder assembly and the poking piece of the utility model;
[0017] Figure 5 is the sectional view of the utility model's paving assembly.
[0018] In the figure: 1, fixed plate; 2, moving assembly; 21, sliding rail; 22, moving drive device; 23, transmission screw rod; 24, sliding rod seat; 3, quantitative powder outlet assembly; 31, moving seat; 32, distribution box; 321, extension plate; 322, distribution drive device; 323, clamping groove; 33, distribution hopper; 34, distribution brush; 35, closing plate; 36, storage cavity; 37, distribution roller; 4, paving assembly; 41, fixed box; 42, paving roller; 43, roller brush; 44, pressing block; 5, poking piece; 51, first connecting rod; 52, second connecting rod; 53, electromagnet. DETAILED DESCRIPTION
[0019] As Figures 1 to 5 shown in the embodiment, the utility model includes fixed plate 1, moving assembly 2 arranged on the fixed plate 1, quantitative powder outlet assembly 3 in sliding cooperation with the moving assembly 2, and paving assembly 4 arranged on one side of the quantitative powder outlet assembly 3, the quantitative powder outlet assembly 3 includes moving seat 31, distribution box 32, distribution hopper 33, distribution brush 34 and closing plate 35, the moving seat 31 is in sliding cooperation with the moving assembly 2, the upper portion of the distribution box 32 is formed with storage cavity 36, the middle portion of the storage cavity 36 is rotationally connected with distribution roller 37, the distribution hopper 33 is arranged on the lower portion of the storage cavity 36, the lower portion of the distribution hopper 33 is formed with a material leakage groove, the distribution brush 34 is rotationally connected in the material leakage groove, the closing plate 35 is in sliding cooperation with the bottom of the distribution box 32, the distribution box 32 is provided with poking piece 5 for driving the closing plate 35 to move forward and backward, when in use, the poking piece 5 pulls the closing plate 35 to move backward, so that the lower portion of the distribution brush 34 is in communication with the position to be patted with powder, when the printing powder is introduced into the storage cavity 36 and rotates through the distribution roller 37, the quantitative powder is pushed to fall from the slot in the middle portion of the storage cavity 36 into the powder hopper, the distribution brush 34 uniformly distributes and sprinkles the powder falling from top to bottom, the moving assembly 2 drives the moving seat 31 to move forward and backward through the rotating screw rod, the paving roller 42 in the paving assembly 4 is in contact with the powder, the overall structure is compact and convenient to use, and the powder falling amount can be adjusted by controlling the rotating speed of the distribution brush 34 and the distribution roller 37.
[0020] In the embodiment, the moving assembly 2 comprises two slide rails 21 arranged on the fixed plate 1, a moving driving device 22 arranged on one side of one of the slide rails 21, and a transmission screw rod 23 connected with the moving driving device 22, wherein the transmission screw rod 23 is threadedly connected with the moving seat 31, and the other end of the other slide rail 21 is provided with a slide rod seat 24 which is slidably connected with the moving seat 31, and the moving driving device 22 is a rotary motor.
[0021] In the embodiment, the flattening assembly 4 comprises a fixed box 41 fixedly connected with the moving seat 31, a material rolling roller 42 rotatably connected with the middle part of the fixed box 41, and a roller brush 43 arranged in the fixed box 41, wherein the fixed box 41 is provided with a pressing block 44, the roller brush 43 is slidably connected with the pressing block 44, and the roller brush 43 is in contact with the material rolling roller 42.
[0022] In the embodiment, the material distributing box 32 is provided with an extension plate 321, the extension plate 321 is fixedly connected with a material distributing driving device 322, the material distributing driving device 322 is connected with the material distributing roller 37, the middle part of the material storage cavity 36 is provided with a slot for powder falling, the material distributing roller 37 is formed with a plurality of convex edges matched with the slot, the material distributing driving device 322 is a rotary motor, and the convex edges of the material distributing roller 37 are matched with the size of the slot, so that the slot is blocked and the powder cannot fall into the material distributing hopper 33.
[0023] In the embodiment, the upper part of the material distributing box 32 is formed with a clamping groove 323, the pushing member 5 comprises a first connecting rod 51, a second connecting rod 52 and an electromagnet 53, the first connecting rod 51 is fixedly connected with the middle part of the material distributing box 32, the electromagnet 53 is slidably connected with the clamping groove 323, the upper part of the second connecting rod 52 is rotatably connected with the electromagnet 53, the middle part of the second connecting rod 52 is rotatably connected with the first connecting rod 51, and the bottom of the second connecting rod 52 is rotatably connected with the closing plate 35, so that the opening and closing of the closing plate 35 is realized by using the principle of the electromagnet 53 and the lever adsorption matching mode, the structure is simplified, and the transmission effectiveness is improved.
[0024] In the embodiment, the material distributing hopper 33 is gradually reduced in width from top to bottom.
[0025] In the embodiment, the moving seat 31 is provided with a rotary driving seat, the rotary driving seat drives the material distributing brush 34 to rotate through a transmission member, the rotary driving seat drives the powder distributing brush to flatten the powder through a rotary motor, and the transmission belt is a belt.
[0026] The working principle of the utility model is as follows:
[0027] When in use, the knob 5 pulls the closing plate 35 to move backward, so that the lower part of the distributing brush 34 communicates with the position to be patted powder, the printing powder is introduced into the storage cavity 36, and when the distributing roller 37 rotates, a certain amount of powder is pushed to fall from the slot in the middle of the storage cavity 36 into the powder hopper, the distributing brush 34 uniformly distributes the powder falling from top to bottom, and the moving assembly 2 moves the moving seat 31 forward and backward through the rotating screw, so that the laying roller 42 in the laying assembly 4 is in contact with the powder.
[0028] Although the embodiments of the present application are described in actual schemes, but do not constitute a limitation on the meaning of the present application, for those skilled in the art, according to the modification of the embodiments and the combination with other schemes in the present application are obvious.
Claims
1. A quantitatively adjustable 3D printed powder spreading structure, characterized in that: The utility model provides a kind of powder dispensing device, including fixed plate (1), the mobile assembly (2) of being arranged in the fixed plate (1), and the quantitative powder assembly (3) with the mobile assembly (2) sliding cooperation, and the flat assembly (4) of being arranged in the quantitative powder assembly (3) one side, the quantitative powder assembly (3) includes mobile seat (31), distribution box (32), distribution hopper (33), distribution brush (34) and closure plate (35), the mobile seat (31) with the mobile assembly (2) sliding cooperation, the upper portion of the distribution box (32) is formed with storage cavity (36), the middle part of the storage cavity (36) is rotatably connected with distribution roller (37), the distribution hopper (33) is arranged in the lower portion of the storage cavity (36), the lower portion of the distribution hopper (33) is formed with leakage groove, the distribution brush (34) is rotatably connected in the leakage groove, the closure plate (35) is slidably connected with the bottom of the distribution box (32), and the distribution box (32) is provided with the knob (5) that drives the closure plate (35) moves back and forth.
2. A quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The mobile assembly (2) includes two slide rails (21) arranged in the fixed plate (1), a mobile drive device (22) arranged on one side of one of the slide rails (21), and a transmission screw rod (23) connected to the movable end of the mobile drive device (22), the transmission screw rod (23) is threadedly connected with the mobile seat (31), and the other slide rail (21) is provided with a slide rod seat (24) slidably connected with the mobile seat (31) at both ends.
3. The quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The flat assembly (4) includes a fixed box (41) fixedly connected with the mobile seat (31), a material spreading roller (42) rotatably connected to the middle part of the fixed box (41), and a roller brush (43) arranged in the fixed box (41), the fixed box (41) is provided with a pressing block (44), the roller brush (43) is slidably connected with the pressing block (44), and the roller brush (43) is in contact with the material spreading roller (42).
4. The quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The distribution box (32) is provided with an extension plate (321), the extension plate (321) is fixedly connected with a distribution drive device (322), the distribution drive device (322) is connected with the distribution roller (37), the middle part of the storage cavity (36) is provided with a slot for powder to fall into, and the distribution roller (37) is formed with a plurality of raised edges matched with the slot.
5. The quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The upper part of the distribution box (32) is formed with a clamping groove (323), the knob (5) includes a first connecting rod (51), a second connecting rod (52) and an electromagnet (53), the first connecting rod (51) is fixedly connected with the middle part of the distribution box (32), the electromagnet (53) is slidably connected with the clamping groove (323), the upper part of the second connecting rod (52) is rotatably connected with the electromagnet (53), the middle part of the second connecting rod (52) is rotatably connected with the first connecting rod (51), and the bottom of the second connecting rod (52) is rotatably connected with the closure plate (35).
6. The quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The distribution hopper (33) gradually narrows from top to bottom.
7. The quantitatively adjustable 3D printing powder spreading structure according to claim 1, characterized in that: The mobile seat (31) is provided with a rotary driving seat, which drives the material distributing brush (34) to rotate through a transmission member.