Feeding mechanism for 3D printing equipment

Abstract

The utility model discloses a feeding mechanism for 3D printing equipment. The feeding mechanism comprises a main body structure; the main body structure comprises a feeding bin and a storage bin, one end of the feeding bin is provided with a feeding port used for feeding materials to a nozzle of the 3D printing equipment, the storage bin is located above one end of the feeding bin, the lower end of the storage bin communicates with the feeding bin through a channel, an electromagnetic valve is installed on the channel, and a feeding mechanism is installed in the feeding bin; a mixing mechanism; the mixing mechanism comprises a second motor and a second rotating shaft which are fixedly mounted on the bin cover, one end of an output shaft of the second motor penetrates through the bin cover and is fixedly connected to the upper end of the second rotating shaft through a coupler, and a mixing rod is welded to the outer wall of the second rotating shaft; and the preheating mechanism is used for preheating the raw materials. And various materials in the material storage bin can be comprehensively and uniformly mixed, so that the materials are more uniform, and thus it is guaranteed that finished products obtained through 3D printing have high quality.

Description

Technical Field

[0001] The utility model relates to the technical field related to 3D printing equipment, in particular to a feeding mechanism for 3D printing equipment. Background Art

[0002] 3D printing technology is widely used in various fields, including manufacturing, medical industry, aerospace, education and scientific research. In the manufacturing industry, it can be used to manufacture parts for vehicles such as automobiles, airplanes, ships, and various mechanical equipment; in the medical industry, it can be used to manufacture dental implants, bone scaffolds, artificial organs, etc.; in the aerospace field, it can be used to manufacture lightweight and high-strength structural parts and precision parts; in the field of education and scientific research, it can be used to manufacture teaching models, scientific research prototypes, etc.

[0003] After searching, the Chinese patent application number is: CN201510069495.8, which discloses a 3D printing feeding mechanism, including a powder box, a front powder box plate and a rear powder box plate; a long strip feeding trough is provided at the bottom of the powder box, a plurality of front guide plates tilted downward are provided on the side of the front powder box plate facing the rear powder box plate, and a plurality of rear guide plates tilted downward are provided on the side of the rear powder box plate facing the front powder box plate, and a plurality of front guide plates and a plurality of rear guide plates are arranged to cross each other and form a spiral feeding channel, and a rotating body is rotatably connected on the front powder box plate and the rear powder box plate, and the shape of the rotating body facing the lower end face of the front powder box plate matches, and the shape of the rotating body facing the lower end face of the rear powder box plate matches the shape of the lower end face of the rear powder box plate. The invention has a simple structure, a novel and reasonable design, simple operation, high flexibility, a switching function of the switch station, can realize accurate feeding, is highly practical, and is easy to promote and use.

[0004] The above technical solution still has a defect, that is, the lack of a comprehensive and uniform mixing function. Since the material used for 3D printing is not single, the lack of a comprehensive and uniform mixing function is prone to uneven materials, which will affect the quality of the product. Therefore, we need to propose a feeding mechanism for 3D printing equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a feeding mechanism for 3D printing equipment. The device has a simple structure and is easy to use. By staggering the mixing rods on the second rotating shaft and the heating rods on the inner wall of the storage bin, the various materials in the storage bin can be fully and evenly mixed, making the materials more uniform, thereby ensuring that the finished products printed by 3D have higher quality, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A feeding mechanism for a 3D printing device, comprising:

[0008] Main structure;

[0009] The main structure includes a feeding bin and a storage bin, one end of the feeding bin is provided with a feeding port for feeding materials to the nozzle of the 3D printing device, the storage bin is located above one end of the feeding bin, and the lower end of the storage bin is connected to the feeding bin through a channel, a solenoid valve is installed on the channel, a feeding mechanism is installed in the feeding bin, a bin cover is provided on the top of the storage bin, and a feeding port is provided on the bin cover;

[0010] Hybrid institutions;

[0011] The mixing mechanism comprises a second motor and a second rotating shaft fixedly mounted on the bin cover, one end of the output shaft of the second motor passes through the bin cover and is fixedly connected to the upper end of the second rotating shaft through a coupling, and a mixing rod is welded on the outer wall of the second rotating shaft;

[0012] It also includes a preheating mechanism for preheating the raw materials.

[0013] Preferably, the feeding mechanism includes a first rotating shaft, which is rotatably mounted in the inner cavity of the feeding bin, and threaded conveying blades are arranged on the outer wall of the first rotating shaft.

[0014] Preferably, a first motor is installed on an outer wall of one side of the feeding bin, and an output end of the first motor is fixedly connected to one end of a first rotating shaft.

[0015] Preferably, the preheating mechanism comprises heating rods sealed and plugged into the outer wall of the storage bin, and the heating rods are vertically distributed in multiple groups on the surrounding outer walls of the storage bin.

[0016] Preferably, the portion of the heating rod located in the storage bin and the mixing rod on the second rotating shaft are arranged alternately up and down.

[0017] Preferably, a clamping ring is provided at the upper end of the inner wall of the feed port, a peripheral edge is clamped on the clamping ring, and a filter net bag is provided inside the peripheral edge.

[0018] Preferably, a clamping hole is provided on the clamping ring, a convex rod corresponding to the clamping hole is provided at the bottom of the surrounding edge, and the filter net bag is arranged in a funnel shape.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model is provided with a main structure including a feeding bin and a storage bin, the feeding bin and the storage bin are connected by a channel, a feeding port is provided on the feeding bin, a bin cover with the feeding port is provided on the storage bin, a feeding mechanism is provided in the feeding bin, a mixing mechanism including a second motor and a second rotating shaft is provided on the bin cover, the mixing rods on the second rotating shaft and the heating rods on the inner wall of the storage bin are staggered, the device has a simple structure and is easy to use, and the staggered design of the mixing rods on the second rotating shaft and the heating rods on the inner wall of the storage bin can comprehensively and evenly mix a variety of materials in the storage bin, making the materials more uniform, thereby ensuring that the 3D printed products have higher quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the feeding mechanism of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the hybrid mechanism of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the feed port of the utility model.

[0025] In the figure: 1. feeding bin; 2. storage bin; 3. passage; 4. bin cover; 5. feeding port; 6. first rotating shaft; 7. first motor; 8. second motor; 9. second rotating shaft; 10. mixing rod; 11. heating rod; 12. feeding port; 13. clamping ring; 14. clamping hole; 15. surrounding edge; 16. filter net bag; 17. convex rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-3 , the utility model provides a technical solution:

[0028] A feeding mechanism for a 3D printing device, comprising:

[0029] Main structure; The main structure includes a feeding bin 1 and a storage bin 2. One end of the feeding bin 1 is provided with a feeding port 5 for feeding materials to the nozzle of the 3D printing device. The storage bin 2 is located above one end of the feeding bin 1, and the lower end of the storage bin 2 is connected to the feeding bin 1 through a channel 3. A solenoid valve is installed on the channel 3. A feeding mechanism is installed in the feeding bin 1. A bin cover 4 is provided on the top of the storage bin 2, and a feed port 12 is provided on the bin cover 4.

[0030] Mixing mechanism; the mixing mechanism includes a second motor 8 and a second rotating shaft 9 fixedly mounted on the bin cover 4, one end of the output shaft of the second motor 8 passes through the bin cover 4 and is fixedly connected to the upper end of the second rotating shaft 9 through a coupling, and a mixing rod 10 is welded on the outer wall of the second rotating shaft 9; the feeding mechanism includes a first rotating shaft 6, which is rotatably mounted in the inner cavity of the feeding bin 1, and a threaded conveying blade is arranged on the outer wall of the first rotating shaft 6. A first motor 7 is installed on the outer wall of one side of the feeding bin 1, and the output end of the first motor 7 is fixedly connected to one end of the first rotating shaft 6.

[0031] By setting up a main structure including a feeding bin 1 and a storage bin 2, the feeding bin 1 and the storage bin 2 are connected through a channel 3, a feed port 12 is set on the feeding bin 1, a bin cover 4 with a feed port 12 is set on the storage bin 2, a feeding mechanism is set in the feeding bin 1, a mixing mechanism including a second motor 8 and a second rotating shaft 9 is set on the bin cover 4, and the mixing rod 10 on the second rotating shaft 9 and the heating rod 11 on the inner wall of the storage bin 2 are staggered. In actual use, the nozzle of the 3D printing device is connected through the feeding port 5, and the material is added through the feeding port 12. The second motor 8 is started to drive the mixing rod 10 to fully mix the material. The solenoid valve is started to input the mixed material into the feeding bin 1 through the channel 3, and the first motor 7 is started. The threaded conveying blade conveys the material to the nozzle through the feeding port 5.

[0032] See also Figure 2 In order to improve the working efficiency of 3D printing equipment, this application sets up a waste heat function for materials:

[0033] The preheating mechanism is also included to preheat the raw materials. The preheating mechanism includes heating rods 11 sealed and plugged into the outer wall of the storage bin 2. The heating rods 11 are vertically distributed in multiple groups on the outer walls of the storage bin 2. The portion of the heating rods 11 located in the storage bin 2 and the mixing rods 10 on the second rotating shaft 9 are arranged in an up-and-down staggered manner.

[0034] By arranging heating rods 11 staggered with mixing rods 10 in the storage bin 2, on the one hand, it can play an auxiliary role when the mixing mechanism mixes the materials, thereby improving the mixing efficiency and making the mixing of the materials more uniform and comprehensive. On the other hand, through the arrangement of the heating rods 11, the materials in the storage bin 2 can be preheated, and during the mixing process, the heating of the materials can be made more uniform. The preheated materials are then transported to the 3D printing equipment for use, which can save the energy consumption of the 3D printing equipment, shorten the heating process, and improve the printing efficiency.

[0035] Among them, the heating rod 11 is set to be made of ceramic heating element material, which has the advantages of easy installation, high temperature resistance, fast heat transfer, good insulation, and manufacturing without restrictions on models and specifications. Specifically, a PTC ceramic heating element with surface insulation treatment can be used, which is a thermistor, composed of a PTC ceramic heating element and an aluminum tube, has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant temperature, power-saving electric heater.

[0036] In general, the device has a simple structure and is easy to use. By staggering the mixing rod 10 on the second rotating shaft 9 and the heating rod 11 on the inner wall of the storage bin 2, the various materials in the storage bin 2 can be comprehensively and evenly mixed, making the materials more uniform, thereby ensuring that the 3D printed products have higher quality.

[0037] See also Figure 4 :

[0038] A clamp ring 13 is provided at the upper end of the inner wall of the feed port 12, and a peripheral edge 15 is clamped on the clamp ring 13, and a filter net bag 16 is provided in the peripheral edge 15. A clamp hole 14 is opened on the clamp ring 13, and a convex rod 17 corresponding to the clamp hole 14 is provided at the bottom of the peripheral edge 15, and the filter net bag 16 is arranged in a funnel shape.

[0039] By providing a surrounding edge 15 with a filter net bag 16 in the feed port 12, large particles of impurities can be filtered out when the material is added. At the same time, the surrounding edge 15 is clamped by a clamping ring 13 with a clamping hole 14 on the inner wall of the feed port 12, which can facilitate the cleaning of impurities in the filter net bag 16.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A feeding mechanism for a 3D printing device, characterized in that: include: Main structure; The main structure comprises a feeding bin (1) and a storage bin (2), one end of the feeding bin (1) is provided with a feeding port (5) for feeding materials to a nozzle of a 3D printing device, the storage bin (2) is located above one end of the feeding bin (1), and the lower end of the storage bin (2) is connected to the feeding bin (1) via a channel (3), the channel (3) is provided with a solenoid valve, a feeding mechanism is provided in the feeding bin (1), a bin cover (4) is provided on the top of the storage bin (2), and a feeding port (12) is provided on the bin cover (4); Hybrid institutions; The mixing mechanism comprises a second motor (8) and a second rotating shaft (9) fixedly mounted on the bin cover (4); one end of the output shaft of the second motor (8) passes through the bin cover (4) and is fixedly connected to the upper end of the second rotating shaft (9) via a coupling; a mixing rod (10) is welded to the outer wall of the second rotating shaft (9); It also includes a preheating mechanism for preheating the raw materials.

2. A feeding mechanism for a 3D printing device according to claim 1, characterized in that: The feeding mechanism comprises a first rotating shaft (6), the first rotating shaft (6) being rotatably mounted in the inner cavity of the feeding bin (1), and a threaded conveying blade being arranged on the outer wall of the first rotating shaft (6).

3. A feeding mechanism for a 3D printing device according to claim 2, characterized in that: A first motor (7) is mounted on an outer wall of one side of the feeding bin (1), and an output end of the first motor (7) is fixedly connected to one end of a first rotating shaft (6).

4. A feeding mechanism for a 3D printing device according to claim 1, characterized in that: The preheating mechanism comprises heating rods (11) which are sealed and plugged into the outer wall of the storage bin (2), and a plurality of groups of heating rods (11) are vertically distributed on the outer walls of the storage bin (2) on all four sides.

5. A feeding mechanism for a 3D printing device according to claim 4, characterized in that: The portion of the heating rod (11) located in the material storage bin (2) and the mixing rod (10) on the second rotating shaft (9) are arranged in an up-and-down staggered manner.

6. A feeding mechanism for a 3D printing device according to claim 1, characterized in that: A clamping ring (13) is provided at the upper end of the inner wall of the feed opening (12), a peripheral edge (15) is clamped on the clamping ring (13), and a filter net bag (16) is provided inside the peripheral edge (15).

7. A feeding mechanism for a 3D printing device according to claim 6, characterized in that: The clamping ring (13) is provided with a clamping hole (14), the bottom of the surrounding edge (15) is provided with a protruding rod (17) corresponding to the clamping hole (14), and the filter net bag (16) is arranged in a funnel shape.

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