An additive manufacturing powder mixing device

Abstract

The utility model relates to 3D printing field especially relates to a kind of additive manufacturing powder mixing device, including bottom plate and mixing box, the bottom plate is provided with lifting structure, adjusting structure is provided on the lifting structure, the mixing box is located on the adjusting structure;This kind of additive manufacturing powder mixing device, through the adjusting structure being set, the mixing box fixed and discharge angle adjusting system through the synergetic effect of cylinder drive bidirectional sliding clamping mechanism and motor drive rotating mechanism, the quick positioning of mixing box and accurate discharge control are realized.Clamping mechanism adopts symmetrical slider guide rail design, through the synchronous movement of two groups of sliding frames by cylinder drive, cooperate with the precision fit of guide rod and sleeve, ensure the centring accuracy and stability in clamping process, effectively avoid that mixing box deviates or vibrates when fixing.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing, and in particular to an additive manufacturing powder mixing device. Background Technology

[0002] In the metal additive manufacturing industry, metal powder is a commonly used raw material. To ensure the consistency of the overall mechanical properties of printed parts, there are extremely strict requirements for the physical properties of metal powder, such as the content of chemical elements and particle size. Currently, metal powder is relatively expensive. Part printing manufacturers often encounter differences in particle size and the content of certain chemical elements because powders A and B of the same brand come from different manufacturers or batches. These differences in particle size and element content can lead to variations in the performance of additively manufactured parts. To ensure the consistency of the overall performance of printed parts, it is necessary to uniformly mix multiple batches of powder to achieve a consistent powder C (A+B=C).

[0003] Currently, the discharge system of the mixing unit has certain limitations. Due to insufficient structural design, the mixed powder material does not flow smoothly during the discharge process, resulting in low discharge efficiency and difficulty in matching the production rhythm of subsequent processes, thus affecting the continuity and efficiency of the overall production process. This sluggish discharge speed restricts the overall efficiency of the mixing process. Utility Model Content

[0004] The purpose of this invention is to provide an additive manufacturing powder mixing device to solve the problem mentioned in the background art, where the existing mixing devices suffer from suboptimal structural design, resulting in poor flow of the mixed powder material during discharge, low discharge efficiency, and difficulty in matching the production rhythm of subsequent processes, thus affecting the continuity and efficiency of the overall production process. This sluggish discharge speed restricts the overall efficiency of the mixing process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an additive manufacturing powder mixing device, comprising a base plate and a mixing box, wherein a lifting structure is provided on the base plate, an adjustment structure is provided on the lifting structure, and the mixing box is disposed on the adjustment structure;

[0006] The adjustment structure includes a fixed frame, a first slider, a first sliding frame, a first rotating frame, a guide rail, a motor, a second slider, a second sliding frame, a second rotating frame, a cylinder, a guide rod, and a sleeve. The guide rail is mounted on the fixed frame, the first slider is movably mounted on the guide rail, the first sliding frame is mounted on the first slider, the first rotating frame is movably mounted on the first sliding frame, the motor is mounted on the first sliding frame and its drive end is connected to the first rotating frame, the second slider is movably mounted on the guide rail, the second sliding frame is mounted on the second slider, the second rotating frame is movably mounted on the second sliding frame, the cylinder is mounted on the second sliding frame and its drive end is connected to the first sliding frame, the sleeve is mounted on the first rotating frame, and the guide rod is mounted on the second rotating frame and its guide rod is movably connected to the sleeve.

[0007] Preferably, the fixing frame is provided with reinforcing ribs, and the base plate is provided with pads.

[0008] Preferably, the cylinder is fixed to the second sliding frame by bolts, and the guide rod is adapted to the sleeve.

[0009] Preferably, the lifting structure includes a support cylinder, a moving rod, a moving plate, a fixed cylinder, a lifting rack, a placement frame, a rotating shaft, a rotating gear, a turning gear, a mounting frame, a moving rack, an electric push rod, and a connecting plate. The support cylinder is mounted on the base plate, the moving rod is movably mounted inside the support cylinder, the moving plate is mounted on the moving rod, the fixed cylinder is mounted on the base plate, the lifting rack is movably mounted inside the fixed cylinder and connected to the moving plate, the placement frame is mounted on the base plate, the rotating shaft is movably mounted on the placement frame, the rotating gear is mounted on the rotating shaft and meshes with the lifting rack, the turning gear is mounted on the rotating shaft, the mounting frame is mounted on the base plate, the moving rack is movably mounted on the mounting frame and meshes with the turning gear, the electric push rod is mounted on the mounting frame, and the connecting plate is mounted on the driving end of the electric push rod and connected to the moving rack.

[0010] Preferably, the lifting rack is adapted to the fixed cylinder, and the moving rod is adapted to the support cylinder.

[0011] Preferably, the mounting bracket is provided with reinforcing ribs, and the movable rack is adapted to the mounting bracket.

[0012] Preferably, the electric push rod is fixed to the mounting bracket by bolts, and the rotating shaft is adapted to the placement bracket.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This additive manufacturing powder mixing device, through its adjustable structure, utilizes a mixing box fixing and discharge angle adjustment system. This system achieves rapid positioning and precise discharge control of the mixing box through the coordinated action of a cylinder-driven bidirectional sliding clamping mechanism and a motor-driven rotating mechanism. The clamping mechanism employs a symmetrical slider guide rail design. Two sets of sliding frames move synchronously in opposite directions, driven by a cylinder. The precise fit between the guide rod and the sleeve ensures centering accuracy and stability during clamping, effectively preventing the mixing box from shifting or vibrating when fixed. The rotating mechanism, driven by a motor, adjusts the tilt angle of the mixing box. Its gear transmission system precisely converts the rotational motion into changes in the discharge port tilt angle, improving material flow efficiency and allowing for flexible adjustment of the discharge speed according to material characteristics.

[0015] 2. This additive manufacturing powder mixing device, through its lifting structure, uses an electric push rod to drive a rack and pinion transmission system to achieve precise lifting control of the mixing chamber. Its core advantage lies in the efficient coordination of motion conversion and force transmission achieved through a multi-stage linkage transmission structure. The electric push rod drives the rack in linear motion via a connecting mechanism. This linear motion is converted into angular displacement of the rotating shaft via a precision gear pair, and then the rotational motion is converted back into vertical linear motion via another set of rack and pinion pairs, forming a closed-loop transmission chain. The cooperation between the lifting rack and the fixed cylinder provides stable vertical guidance, while the moving rod and the support cylinder form a dual guiding mechanism, effectively suppressing lateral offset and vibration during lifting. This composite transmission design not only achieves precise control of the lifting stroke, but its modular structure also ensures the system's rigidity and load capacity, keeping the mixing chamber stable during lifting and preventing material swaying. Simultaneously, the self-locking characteristic of the gear transmission ensures reliable position holding. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the structure of the fixed cylinder and the lifting rack of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the guide rod and sleeve of the mixing tank of this utility model;

[0020] In the diagram: 1. Base plate; 2. Adjustment structure; 201. Fixed frame; 202. First slider; 203. First sliding frame; 204. First rotating frame; 205. Guide rail; 206. Motor; 207. Second slider; 208. Second sliding frame; 209. Second rotating frame; 210. Cylinder; 211. Guide rod; 212. Sleeve; 3. Lifting structure; 301. Support cylinder; 302. Moving rod; 303. Moving plate; 304. Fixed cylinder; 305. Lifting rack; 306. Placement frame; 307. Rotating shaft; 308. Rotating gear; 309. Rotating gear; 310. Mounting frame; 311. Moving rack; 312. Electric push rod; 313. Connecting plate; 4. Mixing box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an additive manufacturing powder mixing device, including a base plate 1 and a mixing box 4, wherein a lifting structure 3 is provided on the base plate 1, an adjusting structure 2 is provided on the lifting structure 3, and the mixing box 4 is provided on the adjusting structure 2;

[0023] The adjustment structure 2 includes a fixed frame 201, a first slider 202, a first sliding frame 203, a first rotating frame 204, a guide rail 205, a motor 206, a second slider 207, a second sliding frame 208, a second rotating frame 209, a cylinder 210, a guide rod 211, and a sleeve 212. The guide rail 205 is mounted on the fixed frame 201. The first slider 202 is movably mounted on the guide rail 205. The first sliding frame 203 is mounted on the first slider 202. The first rotating frame 204 is movably mounted on the first sliding frame 203. The motor 206 is mounted on the first sliding frame 203, and its driving end is connected to the first rotating frame 204. The second slider 207 is movably mounted on the guide rail 205. The second sliding frame 208 is mounted on the second slider 207. The second rotating frame 209 is movably mounted on the second sliding frame 208. The cylinder 210 is mounted on the second sliding frame 208, and its driving end is connected to the first sliding frame 203. The sleeve 212 is mounted on the first rotating frame 204, and the guide rod 211 is mounted on the second rotating frame 209, with the guide rod 211 movably connected to the sleeve 212. When the mixing box 4 needs to be fixed, the driving cylinder 210 is activated. The cylinder 210 can drive the first sliding frame 203 and the second sliding frame 208 to slide on the guide rail 205 via the first slider 202 and the second slider 207. The first sliding frame 203 and the second sliding frame 208 move closer to each other, and the first rotating frame 204 and the second rotating frame 209 move closer to each other. The moving frame 209 moves closer to the first sliding frame 203 and the second sliding frame 208 to clamp and fix the mixing box 4. The guide rod 211 slides within the sleeve 212 following the second sliding frame 208, making the first sliding frame 203 and the second sliding frame 208 stable when moving. When the mixing is complete and discharge is required, the drive motor 206 is activated. The motor 206 can drive the first rotating frame 204 to rotate. The first rotating frame 204 can cooperate with the second rotating frame 209 to rotate the mixing box 4, adjust the angle of the discharge port of the mixing box 4, and increase the discharge speed.

[0024] Furthermore, the fixing frame 201 is provided with reinforcing ribs, and the base plate 1 is provided with pads. The reinforcing ribs increase the stability of the fixing frame 201, and the pads make the base plate 1 more stable when placed.

[0025] Furthermore, the cylinder 210 is fixed to the second sliding frame 208 by bolts, the guide rod 211 is adapted to the sleeve 212, the cylinder 210 fixed by bolts is easy to install and remove on the second sliding frame 208, and the adapted guide rod 211 moves stably within the sleeve 212.

[0026] Furthermore, the lifting structure 3 includes a support cylinder 301, a moving rod 302, a moving plate 303, a fixed cylinder 304, a lifting rack 305, a placement frame 306, a rotating shaft 307, a rotating gear 308, a rotating gear 309, a mounting frame 310, a moving rack 311, an electric push rod 312, and a connecting plate 313. The support cylinder 301 is mounted on the base plate 1, the moving rod 302 is movably mounted inside the support cylinder 301, and the moving plate 303 is mounted on the moving rod 302. A cylinder 304 is mounted on the base plate 1. A lifting rack 305 is movably mounted inside the fixed cylinder 304 and is connected to the movable plate 303. A placement frame 306 is mounted on the base plate 1. A rotating shaft 307 is movably mounted on the placement frame 306. A rotating gear 308 is mounted on the rotating shaft 307 and meshes with the lifting rack 305. A rotating gear 309 is mounted on the rotating shaft 307. A mounting bracket 310 is mounted on the fixed cylinder 304. On the base plate 1, the movable rack 311 is movably mounted on the mounting bracket 310 and meshes with the rotating gear 309. The electric push rod 312 is mounted on the mounting bracket 310. The connecting plate 313 is mounted on the driving end of the electric push rod 312 and connected to the movable rack 311. The fixed bracket 201 is mounted on the movable plate 303. When the height of the mixing box 4 needs to be adjusted for material feeding, the electric push rod 312 is driven, which can drive the connecting plate 311. 3. Movement: The connecting plate 313 can drive the moving rack 311 to move on the mounting frame 310. The rotating gear 309 drives the rotating shaft 307 to rotate on the placement frame 306 under the action of the moving rack 311. The rotating gear 308 follows the rotating shaft 307 to rotate. The rotating gear 308 can drive the lifting rack 305 to move in the fixed cylinder 304. The lifting rack 305 can drive the moving plate 303 to move. When the moving plate 303 moves, it can drive the moving rod 302 to move in the support cylinder 301, thereby stabilizing the movement of the moving plate 303.

[0027] Furthermore, the lifting rack 305 is adapted to the fixed cylinder 304, and the moving rod 302 is adapted to the support cylinder 301. The adapted lifting rack 305 moves more stably within the fixed cylinder 304, and the adapted moving rod 302 moves stably within the support cylinder 301.

[0028] Furthermore, the mounting frame 310 is provided with reinforcing ribs, and the movable rack 311 is adapted to the mounting frame 310. The reinforcing ribs increase the stability of the mounting frame 310, and the adapted movable rack 311 moves stably on the mounting frame 310.

[0029] Furthermore, the electric push rod 312 is fixed to the mounting frame 310 by bolts, and the rotating shaft 307 is adapted to the placement frame 306. The electric push rod 312, which is fixed by bolts, is easy to install and remove on the mounting frame 310, and the adapted rotating shaft 307 is more stable when rotating on the placement frame 306.

[0030] Working principle: When the mixing box 4 needs to be fixed, the drive cylinder 210 drives the first sliding frame 203 and the second sliding frame 208 to slide on the guide rail 205 via the first slider 202 and the second slider 207. The first sliding frame 203 and the second sliding frame 208 move closer to each other, and the first rotating frame 204 and the second rotating frame 209 follow the first sliding frame 203 and the second sliding frame 208 to move closer to each other, clamping and fixing the mixing box 4. The guide rod 211 follows the second sliding frame 208 to slide in the sleeve 212, making the first sliding frame 203 and the second sliding frame 208 move stably. When mixing is complete and discharge is required, the drive motor 206 drives the first rotating frame 204 to rotate. The first rotating frame 204 can cooperate with the second sliding frame 207 to rotate. The rotating frame 209 rotates the mixing box 4, adjusting the angle of the discharge port of the mixing box 4 to increase the discharge speed. When the height of the mixing box 4 needs to be adjusted for easy feeding, the electric push rod 312 is driven. The electric push rod 312 can drive the connecting plate 313 to move. The connecting plate 313 can drive the moving rack 311 to move on the mounting frame 310. The rotating gear 309 drives the rotating shaft 307 to rotate on the placement frame 306 under the action of the moving rack 311. The rotating gear 308 follows the rotating shaft 307 to rotate. The rotating gear 308 can drive the lifting rack 305 to move in the fixed cylinder 304. The lifting rack 305 can drive the moving plate 303 to move. When the moving plate 303 moves, it can drive the moving rod 302 to move in the support cylinder 301, thereby stabilizing the movement of the moving plate 303.

[0031] 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. An additive manufacturing powder mixing apparatus, comprising a base plate (1) and a mixing chamber (4), characterized in that: A lifting structure (3) is provided on the base plate (1), an adjustment structure (2) is provided on the lifting structure (3), and the mixing box (4) is located on the adjustment structure (2); The adjustment structure (2) includes a fixed frame (201), a first slider (202), a first sliding frame (203), a first rotating frame (204), a guide rail (205), a motor (206), a second slider (207), a second sliding frame (208), a second rotating frame (209), a cylinder (210), a guide rod (211), and a sleeve (212). The guide rail (205) is mounted on the fixed frame (201), the first slider (202) is movably mounted on the guide rail (205), the first sliding frame (203) is mounted on the first slider (202), the first rotating frame (204) is movably mounted on the first sliding frame (203), and the motor (206) is mounted on the first sliding frame (207). The second slider (207) is movably mounted on the guide rail (205), the second sliding frame (208) is mounted on the second slider (207), the second rotating frame (209) is movably mounted on the second sliding frame (208), the cylinder (210) is mounted on the second sliding frame (208) and the driving end of the cylinder (210) is connected to the first sliding frame (203), the sleeve (212) is mounted on the first rotating frame (204), and the guide rod (211) is mounted on the second rotating frame (209) and the guide rod (211) is movably connected to the sleeve (212).

2. The additive manufacturing powder mixing apparatus according to claim 1, characterized in that: The fixing frame (201) is provided with reinforcing ribs, and the base plate (1) is provided with pads.

3. The additive manufacturing powder mixing apparatus according to claim 1, characterized in that: The cylinder (210) is fixed to the second sliding frame (208) by bolts, and the guide rod (211) is adapted to the sleeve (212).

4. The additive manufacturing powder mixing apparatus according to claim 1, characterized in that: The lifting structure (3) includes a support cylinder (301), a moving rod (302), a moving plate (303), a fixed cylinder (304), a lifting rack (305), a placement frame (306), a rotating shaft (307), a rotating gear (308), a rotating gear (309), a mounting frame (310), a moving rack (311), an electric push rod (312), and a connecting plate (313). The support cylinder (301) is mounted on the base plate (1), the moving rod (302) is movably mounted inside the support cylinder (301), the moving plate (303) is mounted on the moving rod (302), the fixed cylinder (304) is mounted on the base plate (1), and the lifting rack (305) is movably mounted inside the fixed cylinder (304) and connected to the moving plate (303). The placement frame (306) is mounted on the base plate (1), the rotating shaft (307) is movably mounted on the placement frame (306), the rotating gear (308) is mounted on the rotating shaft (307) and the rotating gear (308) meshes with the lifting rack (305), the rotating gear (309) is mounted on the rotating shaft (307), the mounting frame (310) is mounted on the base plate (1), the moving rack (311) is movably mounted on the mounting frame (310) and the moving rack (311) meshes with the rotating gear (309), the electric push rod (312) is mounted on the mounting frame (310), the connecting plate (313) is mounted on the driving end of the electric push rod (312) and the connecting plate (313) is connected to the moving rack (311).

5. The additive manufacturing powder mixing apparatus according to claim 4, characterized in that: The lifting rack (305) is adapted to the fixed cylinder (304), and the moving rod (302) is adapted to the support cylinder (301).

6. The additive manufacturing powder mixing apparatus according to claim 4, characterized in that: The mounting bracket (310) is provided with reinforcing ribs, and the movable rack (311) is adapted to the mounting bracket (310).

7. The additive manufacturing powder mixing apparatus according to claim 4, characterized in that: The electric push rod (312) is fixed to the mounting bracket (310) by bolts, and the rotating shaft (307) is adapted to the placement bracket (306).

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