Multi-material mixing feeder for 3D printing

Abstract

The utility model discloses a kind of multi-material mixing feeders for 3D printing, it is related to 3D printing technical field;And the utility model includes bunker, the lower surface of bunker is fixedly connected with discharge pipe, the upper surface of bunker is fixedly connected with connecting pipe, feeding pipe is communicated with the outer surface annular array of connecting pipe, the upper surface of connecting pipe movably is equipped with cover, connecting pipe and cover are equipped with connecting assembly between, the inside of bunker and discharge pipe and the upper surface of cover are commonly equipped with clear jamming type stirring mechanism, the even stirring and mixing of material can be realized by the clear jamming type stirring mechanism, in the stirring process, the material at discharge port is scraped and cleaned synchronously by the mechanism, effectively avoid the outlet blockage problem caused by material accumulation, caking, by connecting assembly, stirring structure is designed into split type, and this detachable design greatly simplifies the cleaning maintenance process of mixing feeder.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a multi-material mixing feeder for 3D printing. Background Technology

[0002] In today's revolutionary manufacturing process, 3D printing technology, with its digitalization, intelligence, and innovative material applications, has become a core force in the field of rapid prototyping, widely penetrating diverse fields such as industrial design, education, healthcare, construction, automotive, and even aerospace. As a crucial component of 3D printing technology, the performance of the feeding system directly affects the quality and diversity of the printed products.

[0003] However, existing multi-material mixing feeders for 3D printing still have some problems in use:

[0004] First, the existing feeder does not mix materials evenly during mixing, and it cannot clear blockages while mixing, which makes the outlet structure very prone to blockage, thus reducing the effectiveness of the mixing feeder.

[0005] Secondly, the mixing structure in existing mixing feeders is generally installed in a fixed manner. This fixed installation method makes the subsequent cleaning and maintenance of the mixing feeder cumbersome, and the cleaning tools are difficult to penetrate, resulting in incomplete cleaning, which in turn affects the purity of the subsequent printing materials and the printing quality. Utility Model Content

[0006] To address the problems of uneven mixing, easy clogging of the discharge port, and cumbersome cleaning and maintenance in existing mixing feeders, the purpose of this invention is to provide a multi-material mixing feeder for 3D printing.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: a multi-material mixing feeder for 3D printing, including a hopper, a discharge pipe fixedly connected to the lower surface of the hopper, a connecting pipe fixedly connected to the upper surface of the hopper, a feed pipe arranged in a ring array on the outer surface of the connecting pipe, a cover plate movably provided on the upper surface of the connecting pipe, a connecting component provided between the connecting pipe and the cover plate, a blockage-clearing stirring mechanism provided inside the hopper and the discharge pipe and on the upper surface of the cover plate, the blockage-clearing stirring mechanism including a protective shell, the protective shell fixedly installed on the upper surface of the cover plate, a servo motor fixedly installed on the inner wall of the protective shell, and a circular plate fixedly connected to the output end of the servo motor, a circular rod fixedly connected to the lower surface of the circular plate, and the bottom end of the circular rod penetrating the upper surface of the cover plate, stirring components fixedly sleeved at equal intervals on the outer surface of the circular rod, and a scraper fixedly sleeved on the outer surface of the circular rod, with one side of the scraper slidingly contacting the inner wall of the discharge pipe.

[0008] Preferably, the connecting assembly includes symmetrically distributed clamping plates, which are symmetrically fixedly installed on both sides of the cover plate. Positioning blocks are symmetrically fixedly connected to both sides of the connecting pipe, and corresponding clamping plates and positioning blocks are threadedly connected with connecting bolts.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application uses a blockage-clearing mixing mechanism to achieve uniform mixing and blending of materials. During the mixing process, the mechanism simultaneously scrapes and cleans the material at the outlet, effectively avoiding outlet blockage caused by material accumulation and clumping, and significantly improving the working efficiency and stability of the mixing feeder.

[0011] 2. This application uses a connecting component to design the mixing structure as a separate unit. This detachable design greatly simplifies the cleaning and maintenance process of the mixing feeder, allowing cleaning tools to reach into every corner of the feeder to ensure that residual materials are thoroughly removed, thereby ensuring the purity of the subsequent printing materials and the printing quality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the unblocking stirring mechanism of this utility model.

[0015] Figure 3 This is a schematic diagram of the exploded structure of the connecting component of this utility model.

[0016] In the diagram: 1. Hopper; 2. Unblocking mixing mechanism; 21. Protective shell; 22. Servo motor; 23. Circular plate; 24. Scraper; 25. Circular rod; 26. Mixing component; 3. Connecting assembly; 31. Connecting bolt; 32. Clamping plate; 33. Magnetic suction groove; 34. Positioning block; 35. Magnetic suction rod; 4. Feed pipe; 5. Control valve; 6. Cover plate; 7. Sealing cover; 8. Discharge pipe; 9. Control switch; 10. Connecting pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figure 1-3 As shown, this utility model provides a multi-material mixing feeder for 3D printing, including a hopper 1. The hopper 1 is a transparent hopper, which allows operators to directly observe the internal material storage, mixing, and flow status, and promptly detect any abnormalities. A discharge pipe 8 is fixedly connected to the lower surface of the hopper 1, and a connecting pipe 10 is fixedly connected to the upper surface of the hopper 1. A feed pipe 4 is arranged in a ring array on the outer surface of the connecting pipe 10. A control valve 5 is provided on the outer surface of the feed pipe 4. The combination of the ring array of feed pipes 4 and the control valve 5 enables independent feeding control of multiple materials to meet different mixing ratio requirements. A control switch 9 is provided on the outer surface of the discharge pipe 8. The discharge pipe 8 and the control switch 9 work together to precisely control the timing and flow rate of the mixed material discharge.

[0019] The end of the feed pipe 4 is hinged with a sealing cap 7, which can prevent dust and impurities from entering the feed pipe 4 when it is not in use. The upper surface of the connecting pipe 10 is movably provided with a cover plate 6. A connecting component 3 is provided between the connecting pipe 10 and the cover plate 6. The arrangement of the connecting component 3, the cover plate 6, and the connecting pipe 10 facilitates subsequent maintenance and cleaning of the inside of the feeder. The inside of the hopper 1 and the discharge pipe 8, together with the upper surface of the cover plate 6, is provided with a blockage-clearing stirring mechanism 2. The blockage-clearing stirring mechanism 2 can realize the functions of material mixing and anti-blockage of the discharge port, ensuring the efficient operation of the feeder.

[0020] The unblocking stirring mechanism 2 includes a protective shell 21, which is fixedly installed on the upper surface of the cover plate 6. A servo motor 22 is fixedly installed on the inner wall of the protective shell 21. The protective shell 21 protects the servo motor 22 and prevents external factors from affecting the motor's operation. A circular plate 23 is fixedly connected to the output end of the servo motor 22. The lower surface of the circular plate 23 is rotatably connected to the upper surface of the cover plate 6 to ensure the stability of the rotation of the circular rod 25. A circular rod 25 is fixedly connected to the lower surface of the circular plate 23, and the bottom end of the circular rod 25 penetrates the upper surface of the cover plate 6. A stirring element 26 is fixedly sleeved on the outer surface of the circular rod 25 at equal intervals. The servo motor 22 drives the circular plate 23 and the circular rod 25 to rotate, thereby driving the stirring element 26 to fully stir the materials in the hopper 1 and ensure uniform mixing.

[0021] A scraper 24 is fixedly sleeved on the outer surface of the round rod 25, and one side of the scraper 24 slides in contact with the inner wall of the discharge pipe 8. The scraper 24 on the round rod 25 slides in contact with the inner wall of the discharge pipe 8 during rotation, which can scrape off the material attached to the pipe wall in time, avoid blockage of the discharge pipe 8, ensure smooth discharge, and improve the use effect of the mixing feeder.

[0022] The connecting assembly 3 includes symmetrically distributed clamping plates 32, which are symmetrically fixedly installed on both sides of the cover plate 6. Positioning blocks 34 are symmetrically fixedly connected to both sides of the connecting pipe 10. Correspondingly, connecting bolts 31 are threadedly connected between the clamping plates 32 and the positioning blocks 34. The connecting bolts 31 thread the clamping plates 32 and the positioning blocks 34, providing a stable connection force and ensuring a reliable connection between the cover plate 6 and the connecting pipe 10.

[0023] The lower surface of the cover plate 6 is symmetrically fixed with magnetic suction rods 35, and the upper surface of the connecting pipe 10 is symmetrically provided with magnetic suction grooves 33 for use with the magnetic suction rods 35. The corresponding magnetic suction rods 35 and magnetic suction grooves 33 are magnetically engaged. This magnetic engagement enhances connection stability and facilitates quick disassembly of the cover plate 6, making the stirring structure a split type. When cleaning and maintenance are required, the cover plate 6 can be easily removed to thoroughly clean the inside of the material hopper 1 and the discharge pipe 8, ensuring the cleanliness of the feeder and guaranteeing the purity and printing quality of subsequent printing materials.

[0024] Working principle: When the multi-material mixing feeder is working, the sealing cover 7 at the end of the feed pipe 4 is opened first. The input amount of different materials is controlled by the control valve 5 on the outer surface of the feed pipe 4. Multiple 3D printing materials are transported to the connecting pipe 10 through the feed pipe 4 connected to the outer surface of the connecting pipe 10 via the ring array, and then enter the material bin 1.

[0025] At this time, the servo motor 22 in the unblocking mixing mechanism 2 is started. The output end of the servo motor 22 drives the circular plate 23 to rotate. The circular rod 25 fixedly connected to the lower surface of the circular plate 23 rotates accordingly. The mixing component 26, which is fixedly sleeved at equal intervals on the outer surface of the circular rod 25, mixes the materials in the hopper 1, so that the various materials are mixed evenly.

[0026] Meanwhile, the scraper 24, which is fixedly sleeved on the outer surface of the round rod 25, rotates with the round rod 25. One side of the scraper 24 slides in contact with the inner wall of the discharge pipe 8, which can prevent material from accumulating and clogging on the inner wall of the discharge pipe 8, and play a role in clearing blockage.

[0027] The uniformly mixed material is discharged through the discharge pipe 8 fixedly connected to the lower surface of the hopper 1. The discharge speed and flow rate are controlled by the control switch 9 on the outer surface of the discharge pipe 8, and the material is delivered to the 3D printer for printing.

[0028] When cleaning or maintenance of the inside of the feeder is required, the connecting bolt 31 between the clamping plate 32 and the positioning block 34 in the connecting assembly 3 can be unscrewed.

[0029] Since the magnetic rod 35 on the lower surface of the cover plate 6 is magnetically engaged with the magnetic groove 33 on the upper surface of the connecting pipe 10, the cover plate 6 can be easily removed, making it convenient to clean, inspect and maintain the internal components such as the hopper 1 and the discharge pipe 8.

[0030] Meanwhile, silo 1 is a transparent silo, which facilitates real-time observation of the mixing and storage of materials inside.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A multi-material mixing feeder for 3D printing comprising a hopper (1), characterized in that: The lower surface of the silo (1) is fixedly connected to a discharge pipe (8), the upper surface of the silo (1) is fixedly connected to a connecting pipe (10), the outer surface of the connecting pipe (10) is connected to a feed pipe (4) in a ring array, the upper surface of the connecting pipe (10) is movably provided with a cover plate (6), a connecting component (3) is provided between the connecting pipe (10) and the cover plate (6), and the interior of the silo (1) and the discharge pipe (8) and the upper surface of the cover plate (6) are jointly provided with a blockage-clearing stirring mechanism (2).

2. A multi-material mixing feeder for 3D printing as claimed in claim 1, characterized in that: The unblocking stirring mechanism (2) includes a protective shell (21), which is fixedly installed on the upper surface of the cover plate (6). A servo motor (22) is fixedly installed on the inner wall of the protective shell (21), and a circular plate (23) is fixedly connected to the output end of the servo motor (22). A circular rod (25) is fixedly connected to the lower surface of the circular plate (23), and the bottom end of the circular rod (25) penetrates the upper surface of the cover plate (6). A stirring component (26) is fixedly sleeved on the outer surface of the circular rod (25) at equal intervals. A scraper (24) is fixedly sleeved on the outer surface of the circular rod (25), and one side of the scraper (24) slides in contact with the inner wall of the discharge pipe (8).

3. A multi-material mixing feeder for 3D printing as claimed in claim 1, wherein: The connecting assembly (3) includes symmetrically distributed clamping plates (32), which are symmetrically fixedly installed on both sides of the cover plate (6). Positioning blocks (34) are symmetrically fixedly connected to both sides of the connecting pipe (10), and corresponding clamping plates (32) and positioning blocks (34) are threadedly connected with connecting bolts (31).

4. The multi-material mixing feeder for 3D printing of claim 1, wherein: The end of the feed pipe (4) is hinged with a sealing cap (7).

5. A multi-material mixing feeder for 3D printing as described in claim 1, characterized in that: The outer surface of the feed pipe (4) is provided with a control valve (5), and the outer surface of the discharge pipe (8) is provided with a control switch (9).

6. A multi-material mixing feeder for 3D printing as described in claim 1, characterized in that: The silo (1) is a transparent silo.

7. A multi-material mixing feeder for 3D printing as described in claim 2, characterized in that: The lower surface of the circular plate (23) is rotatably connected to the upper surface of the cover plate (6).

8. A multi-material mixing feeder for 3D printing as described in claim 3, characterized in that: The lower surface of the cover plate (6) is symmetrically fixed with magnetic rods (35), and the upper surface of the connecting tube (10) is symmetrically provided with magnetic grooves (33) for use with the magnetic rods (35). The corresponding magnetic rods (35) and magnetic grooves (33) are magnetically engaged.

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