Vacuum type powder quantitative conveying device

Abstract

The utility model provides a vacuum type powder quantitative conveying device. The vacuum type powder quantitative conveying device is characterized in that a rack comprises a containing cavity; the raw material conveying unit comprises a plurality of conveying mechanisms arranged above the rack, each conveying mechanism comprises a raw material bin body, the lower portion of each raw material bin body is connected with a transversely-arranged first feeding bin body, and a first spiral auger is arranged in each first feeding bin body; the first spiral auger is driven by a first motor arranged on the side wall of the first feeding bin body, and a second feeding bin body is arranged below the first feeding bin body. Raw materials can be effectively stored and conveyed through the vacuum type first feeding bin body, then quantitative stirring and conveying are conducted through the first spiral auger, and the situation that the quality and consistency of finished products are finally affected due to the fact that the ceramic clay raw materials are poor in uniformity and stability in the storage or transportation process is prevented.

Description

Technical Field

[0001] The utility model relates to a vacuum powder quantitative conveying device, which is applied to the field of 3D printing. Background Art

[0002] The 3D printing technology of ceramic clay is an advanced manufacturing method that allows users to guide a machine to lay ceramic clay layer by layer through a digital model, and finally construct a three-dimensional ceramic object. This technology breaks through the limitations of traditional ceramic production, making creation more flexible, production more precise, and enabling the production of complex structures. It not only opens up new ways of expression in the art field, but also is widely used in industrial production and the medical industry, providing personalized and customized solutions.

[0003] Existing ceramic clay 3D printers rely on mixing raw materials and loading them into the extrusion system of the printer during operation for printing operations. If problems with the uniformity and stability of the ceramic clay raw materials occur during storage or transportation, such as separation or condensation of the raw materials, this may interfere with the smoothness of printing and ultimately affect the quality and consistency of the finished product. Therefore, in view of the above problems, the utility model designs a vacuum powder quantitative conveying device. Summary of the Utility Model

[0004] The utility model provides a vacuum powder quantitative conveying device, which can effectively solve the above problems.

[0005] The utility model is implemented as follows:

[0006] A vacuum powder quantitative conveying device includes:

[0007] A frame including a containing cavity;

[0008] A raw material conveying unit including a plurality of conveying mechanisms arranged above the frame. The conveying mechanism includes a raw material bin body, a horizontally arranged first feeding bin body is connected below the raw material bin body, a first spiral auger is arranged in the first feeding bin body, the first spiral auger is driven by a first motor arranged on the side wall of the first feeding bin body, and a second feeding bin body is arranged below the first feeding bin body.

[0009] As a further improvement, a rotatable baffle is arranged in the second feeding bin body, and the baffle is controlled to rotate by a switch arranged on the side wall of the second feeding bin body.

[0010] As a further improvement, a first weighing assembly is provided on the second material feeding bin body. The first weighing assembly includes a support cross beam disposed in the accommodation cavity and mounted on the machine frame. A first mounting plate is provided on the support cross beam, and a weighing module is provided on the first mounting plate. A pressing block is provided on the side wall of the second material feeding bin body, and the pressing block abuts against the weighing module.

[0011] As a further improvement, a second mounting plate is provided above the second material feeding bin body. A fixed shaft is slidably connected to the side wall of the second mounting plate, and the other end of the fixed shaft is fixedly connected to the first mounting plate.

[0012] As a further improvement, a conveying pipeline is connected to the bottom of the second material feeding bin body, and the conveying pipeline is connected to the mixing and extrusion unit.

[0013] The beneficial effects of the present utility model are as follows: A plurality of conveying mechanisms provided above the machine frame can effectively convey different raw materials into the mixing and extrusion unit for printing. The vacuum type first material feeding bin body can effectively store and convey raw materials, and then quantitatively stir and convey them through the first spiral auger, preventing problems of uniformity and stability of the clay raw materials during storage or transportation, ultimately affecting the quality and consistency of the finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic diagram of the overall structure of the printing device provided by the embodiment of the present utility model.

[0016] Figure 2 is a schematic diagram of the internal structure of the accommodation cavity and the printing cavity provided by the embodiment of the present utility model.

[0017] Figure 3 is a schematic diagram of the structure of the conveying mechanism provided by the embodiment of the present utility model.

[0018] Figure 4 is a schematic side view of the conveying mechanism provided by the embodiment of the present utility model.

[0019] Figure 5 is Figure 4 a schematic cross-sectional structure diagram at A-A in

[0020] Figure 6It is a schematic structural diagram of a hybrid extrusion unit provided by an embodiment of the present utility model.

[0021] Figure 7 It is a schematic side structure diagram of a hybrid extrusion unit provided by an embodiment of the present utility model.

[0022] Figure 8 is Figure 7 The schematic cross-sectional structure diagram at B-B in

[0023] Figure 9 It is a schematic structural diagram of a stirring assembly provided by an embodiment of the present utility model.

[0024] Figure 10 It is a schematic top view structure diagram of a hybrid extrusion unit provided by an embodiment of the present utility model.

[0025] The accompanying drawings are described as follows:

[0026] 10. Frame; 11. Accommodating cavity; 12. Printing cavity;

[0027] 20. Raw material conveying unit; 21. Conveying mechanism; 211. Raw material bin body; 212. First spiral auger; 2121. First motor; 213. First feeding bin body; 214. Baffle plate; 2141. Control switch; 215. Second feeding bin body; 22. First weighing assembly; 221. Support crossbeam; 222. First mounting plate; 223. Weighing module; 224. Pressing block; 225. Second mounting plate; 226. Fixed shaft; 2261. Mounting bushing; 23. Conveying pipeline; 231. Vibrator;

[0028] 30. Hybrid extrusion unit; 31. Extrusion mechanism; 311. Mixing bin body; 312. Mixing chamber; 32. Stirring assembly; 321. Second motor; 322. Second spiral auger; 323. First fixed bushing; 324. First stirring paddle; 3241. First stirring rod; 3241-a. Horizontal section; 3241-b. Inclined section; 3242. Second stirring rod; 3243. Ring-shaped stirring rod; 325. Second fixed bushing; 326. Second stirring paddle; 33. Extrusion head; 34. Moving assembly; 341. First linear module; 342. Second linear module; 343. Third mounting plate; 35. Second weighing assembly; 351. Ring-shaped mounting plate; 352. Pin shaft; 353. Pin bushing;

[0029] 40. Printing platform;

[0030] 50. External water tank. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model.

[0032] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0033] Refer to Figures 1 - 2 As shown, a 3D printing device for proportionally mixing and conveying ceramic clay raw materials includes a frame 10, which has a double-layer shell structure. The frame 10 includes a receiving cavity 11 and a printing cavity 12 arranged in an up-and-down structure; a number of universal wheels for movement are provided at the bottom of the frame, and a number of raw material barrels are placed beside the frame, which are used to place raw materials, and a raw material conveying unit 20 is provided at the top of the frame 10.

[0034] Refer to Figures 3 - 5As shown, the raw material conveying unit 20 includes a number of conveying mechanisms 21 arranged above the frame 10. In this embodiment, there are 2 conveying mechanisms. The conveying mechanisms 21 are used to convey different raw materials. The conveying mechanism 21 includes a raw material bin body 211. A horizontally arranged first feeding bin body 213 is connected below the raw material bin body 211. A first spiral auger 212 is arranged in the first feeding bin body 213. The raw materials are quantitatively conveyed forward by the forward spiral pushing of the first spiral auger 212. The first spiral auger 212 is driven by a first motor 2121 arranged on the side wall of the first feeding bin body 213. A second feeding bin body 215 is arranged below the first feeding bin body 213. The first feeding bin body 213 quantitatively conveys the raw materials from the raw material bin body 211 to the second feeding bin body 215. A rotatable baffle 214 is arranged in the second feeding bin body 215. The baffle 214 is controlled to rotate by a switch arranged on the side wall of the second feeding bin body 215. By rotating the baffle 214, the raw materials can be conveyed downward. The bottom of the second feeding bin body 215 is connected with a conveying pipeline 23. The conveying pipeline 23 is a flexible pipeline. A vibrator 231 is arranged on the conveying pipeline 23. In this embodiment, the vibrator 231 is a pneumatic vibrator. The advantage of the pneumatic vibrator is that it has low noise and good vibration effect. The function of the vibrator 231 is to prevent the raw materials from being blocked. Since the conveying pipeline 23 is a flexible pipeline and the vibrator is arranged on the flexible pipeline, the advantage of this setting is that it can not only prevent the raw materials from being blocked, but also reduce the influence of the vibration of the vibrator on the printer. If the vibrator is arranged on the raw material bin body 211, since the raw material bin body 211 is fixedly arranged on the frame, when the vibrator 231 is started, the vibrator 231 may drive the frame to vibrate, resulting in the vibration of the printing platform, which will affect the 3D printing accuracy. If the vibrator 231 is arranged on the flexible conveying pipeline 23, the influence of the vibrator 23 on the frame 10 will be reduced, and thus the influence on the 3D printing accuracy will be reduced.

[0035] Referring to Figures 6 - 10As shown in the figure, the hybrid extrusion unit 30 includes an extrusion mechanism 31 that is horizontally movable and disposed in the accommodation cavity 11 and communicates with the conveying mechanism 21. The extrusion mechanism 31 includes a mixing bin body 311. A mixing chamber 312 is provided inside the mixing bin body 311. The second feeding bin body 215 communicates with the mixing chamber 312 through a conveying pipeline 23. The mixing chamber 312 communicates with the raw material conveying mechanism 21. A stirring assembly 32 is provided in the mixing chamber 312. An extrusion head 33 is connected below the mixing bin body 311. The stirring assembly 32 includes a second motor 321 disposed at the top of the mixing bin body 311. The second motor 321 is connected to a second spiral auger 322. The second spiral auger 322 is disposed in the mixing chamber 312 and extends into the extrusion head 33. The second spiral auger 322 spirally pushes downward for quantitative conveying of the mixed material. A first fixed shaft sleeve 323 is sleeved above the second spiral auger 322. A plurality of first stirring paddles 324 are provided on the first fixed shaft sleeve 323. A second fixed shaft sleeve 325 sleeved on the second spiral auger 322 is disposed below the first fixed shaft sleeve 323. A second stirring paddle 326 is provided on the second fixed shaft sleeve 325. The projections of the first stirring paddle 324 and the second stirring paddle 326 on the horizontal plane are arranged at equal intervals. The first stirring paddle 324 and the second stirring paddle 326 rotate with the rotation of the spiral auger. The mixing bin body 311 is connected to an external water tank 50 through a conveying pipeline 23, and the external water tank 50 is used for supplying water.

[0036] The printing platform 40 is longitudinally slidably disposed in the printing cavity 12 and is used for carrying 3D printed products. As the number of printing layers increases, the printing platform 40 needs to descend accordingly. The printing platform 40 longitudinally slides by driving a lead screw to rotate through a motor. Since this structure is a prior art, no further elaboration will be made here.

[0037] As a further improvement, a first weighing component 22 is provided on the second feeding bin body 215. The first weighing component 22 includes a support cross beam 221 disposed in the accommodating cavity 11 and mounted on the frame 10. A first mounting plate 222 is provided on the support cross beam 221, and a weighing module 223 is provided on the first mounting plate 222. In this embodiment, there is 1 weighing module 223. A pressing block 224 is provided on the side wall of the second feeding bin body 215, and the pressing block 224 abuts against the weighing module 223. The weight of the raw material bin body 211 can be measured by the weighing module 223. The quantity of raw materials in the raw material bin body 223 can be obtained through the weighing module 223, and whether there is a problem such as blockage of the materials in the raw material bin body 211 can also be known through the value fed back by the weighing module 223. A second mounting plate 225 is provided above the second feeding bin body 215. A fixed shaft 226 is slidably connected to the side wall of the second mounting plate 225. An installation shaft sleeve 2261 is provided on the second mounting plate 225. The fixed shaft 226 is slidably disposed in the installation shaft sleeve 2261, and the other end of the fixed shaft 226 is fixedly connected to the first mounting plate 222. By slidably disposing the fixed shaft 226 in the installation shaft sleeve 2261, the raw material bin body 211 is limited in the vertical direction. When raw materials are added to the raw material bin body 211, the raw material bin body 211 will not cause a large weighing error due to the offset of the center of gravity. Therefore, only one weighing module 223 can be provided on the raw material bin body 211, which can not only accurately obtain the weighing value but also reduce the manufacturing cost of the equipment.

[0038] As a further improvement, the first stirring paddle 324 includes a plurality of first stirring rods 3241. The first stirring rods 3241 include a horizontal section 3241-a connected to the first fixed shaft sleeve 323. One end of the horizontal section 3241-a away from the first fixed shaft sleeve 323 is bent downward to form an inclined section 3241-b. The inclined section 3241-b is arranged parallel to the inner side wall of the mixing bin body 311. By providing the first stirring rods 3241 close to the mixing bin body 311, the materials in the mixing bin body 311 can be stirred to the greatest extent. A vertically arranged second stirring rod 3242 is connected between the horizontal section 3241-a and the inclined section 3241-b. The second stirring rod 3242 can not only enhance the strength of the first stirring rods 3241 but also stir the materials in the inner circle. A plurality of tops of the first stirring rods 3241 are connected to an annular stirring rod 3243 coaxially arranged with the second spiral auger 322. The function of the annular stirring rod 3241 is to strengthen the strength of the first stirring rods 3241. The second stirring paddle 326 is a plurality of paddle blades, and the stirring efficiency of the second stirring paddle 326 is higher.

[0039] As a further improvement, a moving component 34 is provided at the bottom of the accommodating cavity 11. The moving component 34 includes a first linear module 341 fixed to the frame 10 and a second linear module 342 disposed on the first linear module 341. A slidable third mounting plate 343 is provided on the second linear module 342, and a second weighing component 35 is provided on the third mounting plate 343. The weighing module 223 abuts against the mixing bin body 311 from above. In this embodiment, the second weighing component 35 includes three weighing modules 223, and the three weighing modules 223 are equidistantly arranged in a circumferential array below the mixing bin body 311. The weighing module 223 can not only weigh the material weight in the mixing bin body 311, but also determine whether the mixing bin body 311 is horizontally arranged through the weighing module 223.

[0040] As a further improvement, the second weighing component 35 includes an annular mounting plate 351 provided on the outer side wall of the mixing bin body 311. A pin shaft 352 is provided on the annular mounting plate 351, and a pin shaft sleeve 353 corresponding to the pin shaft 352 is provided on the third mounting plate 343. The pin shaft 352 is disposed in the pin shaft sleeve 353, which can effectively maintain the center of gravity of the mixing bin body 311 and prevent large measurement errors of the weighing module 223.

[0041] The working principle of the present utility model is as follows: A plurality of conveying mechanisms 21 provided above the frame 10 can effectively convey different raw materials into the mixing and extrusion unit 30. First, they are mixed and stirred in the mixing and stirring mechanism 30 and then extruded through the extrusion mechanism 31 to print the 3D printing material into a preset shape. The present utility model directly mixes the raw materials in the printer and then prints, which can greatly improve the efficiency and prevent the problems of poor material uniformity and stability that may occur due to long-term storage or transportation of the clay material, thus affecting the continuity of the printing process and the quality of the final product.

[0042] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vacuum powder quantitative conveying device, characterized in that, Comprising: A frame, including a receiving cavity (11); A raw material conveying unit (20), including a plurality of conveying mechanisms (21) arranged above the frame (10). The conveying mechanism (21) includes a vacuum raw material bin body (211). A horizontally arranged first feeding bin body (213) is connected below the raw material bin body (211). A first spiral auger (212) is arranged in the first feeding bin body (213). The first spiral auger (212) is driven by a first motor (2121) arranged on the side wall of the first feeding bin body (213). A second feeding bin body (215) is arranged below the first feeding bin body (213). The second feeding bin body (215) is connected to a mixing and extrusion unit (30).

2. The vacuum powder metering and conveying device according to claim 1, wherein, A rotatable baffle plate (214) is arranged in the second feeding bin body (215). The baffle plate (214) is controlled to rotate by a switch arranged on the side wall of the second feeding bin body (215).

3. A vacuum powder quantitative conveying device according to claim 2, characterized in that, A first weighing assembly (22) is arranged on the second feeding bin body (215). The first weighing assembly (22) includes a support cross beam (221) arranged in the receiving cavity (11) and mounted on the frame (10). A first mounting plate (222) is arranged on the support cross beam (221). A weighing module (223) is arranged on the first mounting plate (222). A pressing block (224) is arranged on the side wall of the second feeding bin body (215). The pressing block (224) abuts against the weighing module (223).

4. A vacuum powder metering and conveying device according to claim 3, wherein, A second mounting plate (225) is arranged above the second feeding bin body (215). A fixed shaft (226) is slidably connected to the side wall of the second mounting plate (225). The other end of the fixed shaft (226) is fixedly connected to the first mounting plate (222).

5. A vacuum powder quantitative conveying device according to claim 1, characterized in that, The bottom of the second feeding bin body (215) is connected to a conveying pipeline (23). The conveying pipeline (23) is connected to a mixing and extrusion unit (30).

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