Convenient and efficient powder cleaning device
By combining a rotating drum with a blowing device, the cleaning method solves the problems of low efficiency and dust pollution in traditional cleaning methods, achieving efficient, safe, and convenient cleaning of parts, protecting the parts and simplifying the operation of the device.
Patent Information
- Application Number
- CN202423242408.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing 3D printing technologies, traditional manual powder cleaning methods are inefficient, pose risks of dust pollution and part damage, and existing powder cleaning devices are complex to disassemble and difficult to operate.
The powder is removed by a combination of rotating drum and blowing device. The drum has a hollow structure and a buffer pad inside, and is equipped with a flexible tube blowing head, magnetic suction device, negative pressure adsorption device, and the drum and frame are detachably connected. The drum is tilted to prevent powder from overflowing.
It achieves an efficient, safe, and convenient dust cleaning process, reduces dust pollution, protects parts, simplifies roller disassembly, and improves dust cleaning quality and equipment utilization.
Smart Images
Figure CN223573842U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to 3d printing technical field especially, relates to a convenient and efficient powder cleaning device. BACKGROUND
[0002] In 3d printing based on SLS technology, the printed parts need to be separated from the powder, and the traditional manual powder cleaning method is extremely inefficient, which not only consumes a lot of time and manpower, but also produces a large amount of dust in the powder cleaning process, causing great harm to the health of the powder cleaning personnel.
[0003] In addition, the unprotected powder cleaning operation will cause the parts to frequently collide during cleaning, thereby damaging the parts, which cannot guarantee the quality level of the products.
[0004] Currently, there are also some professional powder cleaning devices, but the disassembly and cleaning of the powder cleaning container are relatively complex, resulting in high cleaning and powder replacement costs, and non-professionals are difficult to operate.
[0005] Therefore, it is necessary to further improve and perfect the prior art to overcome these shortcomings, and the utility model is made based on this situation. UTILITY MODEL CONTENT
[0006] The utility model aims at overcoming the defects of the prior art, and provides a powder cleaning device which is efficient, safe and easy to operate.
[0007] The utility model is realized through the following technical schemes:
[0008] To solve the above technical problems, the utility model provides a convenient and efficient powder cleaning device, which comprises a rack, a roller is rotatably connected to the rack, the inner end of the roller is closed, and the outer end is provided with an opening, the side wall of the roller is hollow, the roller is connected with a driving device for driving the rotation of the roller, and the rack is also provided with a blowing device, the blowing device comprises a gas supply device and a blowing execution assembly connected with the gas supply device and capable of blowing into the roller from the opening.
[0009] To further solve the technical problems of the utility model, the blowing execution assembly of the convenient and efficient powder cleaning device comprises a flexible pipe capable of universal bending and a blowing head arranged at the end of the flexible pipe.
[0010] To further solve the technical problems of the utility model, the flexible pipe of the convenient and efficient powder cleaning device is provided with a magnetic attraction piece capable of being adsorbed on the rack.
[0011] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, detachable connecting structures are arranged between the roller and the rack.
[0012] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, the detachable connecting structures include a rotating sleeve rotatably connected to the rack and in transmission connection with the driving device, and a rotating shaft arranged at the inner end center of the roller, an axial connecting hole is arranged at the center of the rotating sleeve, a pin hole leading to the connecting hole is arranged on the side wall of the rotating sleeve, a bolt is arranged in the pin hole, a circle of circumferential clamping grooves are arranged on the rotating shaft, the rotating shaft is inserted into the connecting hole, and the inner end of the bolt is clamped in the clamping groove, and circumferential limiting structures limiting the relative rotation between the connecting hole and the rotating shaft are arranged.
[0013] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, the cross sections of the rotating shaft and the connecting hole are non-circular, and the two are inserted together to form the circumferential limiting structures.
[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, the roller is arranged obliquely and has an open outer end facing upwards.
[0015] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, the oblique angle A of the roller is 3-5 degrees.
[0016] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, a plurality of support frames evenly arranged on both sides of the roller are arranged below the roller, rolling bodies are arranged on the upper ends of the support frames, and the rolling bodies are universal balls capable of universal rolling.
[0017] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, a powder falling funnel is arranged below the roller on the rack.
[0018] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, a buffer pad is attached and mounted on the inner side wall of the roller, and the buffer pad is also hollowed out.
[0019] In order to further solve the technical problems to be solved by the utility model, the utility model provides a convenient and efficient powder cleaning device, a negative pressure adsorption device for adsorbing free powder in air is arranged on the rack.
[0020] Compared with the prior art, the powder cleaning device has the advantages that:
[0021] The powder cleaning device has the advantages that: the rotation and blowing cleaning mode makes the powder cleaning more thorough; the roller is simple, quick and labor-saving to disassemble, facilitating the later maintenance and cleaning; the stability is good, the safety is high, and the protection of the parts is better; and the negative pressure adsorption device can effectively adsorb dust in the air. BRIEF DESCRIPTION OF DRAWINGS
[0022] The specific embodiments of the utility model will be further described in detail below in combination with the drawings, wherein:
[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;
[0024] Figure 2 is a schematic diagram of the three-dimensional structure of the utility model;
[0025] Figure 3 is a schematic diagram of the three-dimensional structure of the utility model;
[0026] Figure 4 is a sectional view of the utility model;
[0027] Figure 5 is a schematic diagram of the detachable connection structure between the roller and the frame. DETAILED DESCRIPTION
[0028] In order to make the skilled in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments.
[0029] The utility model discloses a kind of convenient and efficient powder cleaning device, effectively solve the problems, such as low powder cleaning efficiency, high labor intensity, serious dust pollution in prior art. The device is described in detail below in combination with the embodiment shown in the drawings: Figures 1 to 5
[0030] The core component of the powder cleaning device is a rotatable roller 2, which is rotationally connected to the frame 1. The inner end of the roller 2 is closed, and the outer end is provided with an opening to facilitate the placement and removal of the printed parts. In order to facilitate the discharge of powder, the side wall of the roller 2 is designed as a hollow structure. This hollow structure can be regular grid, hole, or irregular hollow pattern, the key is to ensure sufficient air permeability and powder discharge capacity.
[0031] The rotation of the roller 2 is driven by the driving device 3, which can be a motor, servo motor or other device that can provide stable rotary power. Through the precise control of the driving device 3, the forward and reverse rotation of the roller 2 and the adjustment of the rotation speed can be realized to meet the powder cleaning needs of different sizes and shapes of printed parts.
[0032] In order to further improve the powder cleaning efficiency, the device is also equipped with a blowing device 4. The blowing device 4 is composed of a gas supply device 41 and a blowing execution assembly 42. The gas supply device 41 can be a gas pump, a compressed air tank or other devices that can provide a stable gas flow. The blowing execution assembly 42 is connected to the gas supply device 41 through an air pipe, which can extend into the inside of the roller from the opening at the outer end of the roller 2 and blow air to the printed parts inside the roller. The air outlet of the blowing execution assembly 42 can be designed in different shapes according to actual needs, for example, it can be designed in a fan shape, a circular shape or other shapes that can effectively cover the surface of the printed parts to achieve the best blowing effect.
[0033] In actual powder cleaning operation, first, the printed parts are put into the roller 2, and then the driving device 3 is started to make the roller 2 start rotating. With the rotation of the roller 2, the printed parts rub against each other in the roller, and the unsintered powder attached to the surface of the printed parts gradually falls off under the combined action of gravity and friction, and falls into the collection device below through the hollow structure of the side wall of the roller 2. The collection device can be a material box, a dust bag or other containers that can contain powder. The collected powder can be recycled and reused to reduce printing costs.
[0034] At the same time of the rotation of the roller 2, the blowing device 4 can be started to blow air to the printed parts by the blowing execution assembly 42, further removing the residual powder on the surface of the printed parts, especially for some complex structures that are difficult to remove powder by friction, the blowing device 4 can play a good complementary role.
[0035] This automatic powder cleaning method greatly improves the powder cleaning efficiency compared with the traditional manual powder cleaning, reduces the manual operation time and labor intensity, at the same time reduces the harm of dust to the health of the operator, improves the safety of the working environment. In addition, the device has simple structure, convenient operation and easy maintenance, and has good practical value.
[0036] The blowing execution assembly 42 mainly includes a flexible pipe 421, a blowing head 422 and a magnetic attraction piece 423, as follows:
[0037] The flexible pipe 421 is a key component of the blowing execution assembly 42, which is made of a material that can bend in all directions, for example, a flexible metal pipe, a silica gel pipe or other materials with similar flexibility. This flexible design gives the blowing execution assembly 42 a high degree of freedom, and the operator can manually bend the flexible pipe 421 to any angle according to the shape and structure of the printed parts, so as to accurately guide the blowing head 422 to the parts that need to be cleaned, realize directional cleaning, and completely remove the residual powder on the surface of the printed parts, especially some hard-to-reach corners and gaps. This directional cleaning ability significantly improves the thoroughness and efficiency of cleaning, avoiding the limitations of traditional fixed blowing methods.
[0038] The blowing head 422 is located at the end of the flexible pipe 421, and its design is also carefully considered. In order to increase the blowing area and improve the powder cleaning efficiency, the blowing port of the blowing head 422 is designed as a fan shape. This fan-shaped blowing port can uniformly disperse the airflow to a larger area, avoiding the powder splashing and waste caused by concentrated blowing. In addition, the material of the blowing head 422 can be selected as wear-resistant and corrosion-resistant material to prolong its service life.
[0039] In order to further improve the operation flexibility of the flexible pipe 421 and facilitate storage when not in use, the flexible pipe 421 is also equipped with a magnetic attraction member 423, such as a magnet or a magnetic patch. The magnetic attraction member 423 can be adsorbed on the metal surface of the rack 1 to fix the flexible pipe 421 at any position, facilitating the operator to perform powder cleaning operation at different angles. When it is necessary to assemble or disassemble the roller 2 or perform other operations, the flexible pipe 421 can be adsorbed on the edge or other non-interfering position of the rack 1 through the magnetic attraction member 423, avoiding the interference of the flexible pipe 421 to the operation, and also avoiding the damage or loss caused by the random placement of the flexible pipe 421.
[0040] In summary, the flexible design of the blowing execution assembly 42, the fan-shaped blowing port and the magnetic attraction fixing method jointly realize the efficient, thorough and flexible directional powder cleaning function, greatly improving the overall performance of the powder cleaning device
[0041] The utility model also adopts a kind of ingenious detachable connecting structure 5, so that the disassembly of roller 2 becomes quick, labor-saving and safe. The specific design of the detachable connecting structure 5 is as follows:
[0042] The core of the connecting structure is the cooperation of the rotating sleeve 51 and the rotating shaft 21. The rotating sleeve 51 is rotatably connected to the rack 1 through a bearing and is connected to the driving device 3 (motor) through a transmission mechanism (transmission belt), and is rotated by the driving device 3. The center of the rotating sleeve 51 is provided with an axial connecting hole 511, which can be inserted into the center of the rotating shaft 21 in the inner end of the roller 2.
[0043] In order to fix the rotating shaft 21 in the connecting hole 511, a pin hole 512 is provided on the side wall of the rotating sleeve 51, which leads to the connecting hole 511, and a latch pin 52 is arranged in the pin hole 512. A ring of circumferentially distributed clamping grooves 211 is provided on the rotating shaft 21. When installing the roller 2, the rotating shaft 21 is inserted into the connecting hole 511 of the rotating sleeve 51, and then the latch pin 52 is inserted into the pin hole 512, and the inner end is clamped in the clamping groove 211 of the rotating shaft 21. In this way, the reliable connection of the roller 2 and the rotating sleeve 51 is realized.
[0044] In order to prevent the relative rotation of the roller 2 during rotation, a circumferential limiting structure is designed between the connecting hole 511 and the rotating shaft 21. A preferred solution is to design the cross section of the rotating shaft 21 and the connecting hole 511 into a non-circular shape, such as a square, polygon or other non-circular shape. When the rotating shaft 21 is inserted into the connecting hole 511, due to the matching shape, a mutual limiting structure is formed between the rotating shaft 21 and the connecting hole 511, effectively preventing the relative rotation between them, ensuring the stability and reliability of the rotation of the roller 2.
[0045] The design of this detachable connection structure 5 makes the disassembly process of the roller 2 very simple. By pulling out the pin 52, the roller 2 can be easily removed from the rack 1, facilitating powder replacement, cleaning or maintenance and other operations. Compared with traditional bolt fixation or other complex connection methods, this detachable connection structure 5 is more convenient and efficient, greatly shortening the maintenance time and improving the utilization rate of the equipment.
[0046] In order to further optimize the collection of powder and prevent powder overflow, the installation angle of the roller 2 is also innovatively designed. In the preferred embodiment, the roller 2 is not placed horizontally, but is inclined, and its open outer end faces upward.
[0047] This design of inclined setting is mainly based on the following two considerations:
[0048] Firstly, the inclined setting can effectively prevent the overflow of powder from the open end of the roller 2. Since the roller 2 will rotate continuously during operation, if the roller 2 is placed horizontally, the print may carry powder to the open end during rotation, causing overflow and waste of powder. By setting the roller 2 inclined with the open end facing upward, even if the print carries powder to the open end, due to the action of gravity, the powder will slide down the inner wall of the roller to the lower end of the roller, effectively preventing the overflow of powder and ensuring the recycling of powder.
[0049] Secondly, the inclined setting is beneficial to the collection of powder. After the powder falls off the print, due to the action of gravity, it will slide down the inner wall of the roller to the lower end of the roller, facilitating subsequent collection and processing.
[0050] In order to achieve the best powder collection effect and prevent powder overflow, the inclination angle A of the roller 2 also needs to be accurately controlled. After repeated tests and optimization, in a further preferred embodiment, the inclination angle A of the roller 2 is set in the range of 3°-5°. This angle range can effectively prevent powder overflow and ensure that the powder slides smoothly to the bottom of the roller, achieving efficient powder collection.
[0051] In order to efficiently collect the powder falling from the roller 2, the utility model discloses a powder falling funnel 11 located directly below the roller 2 on the frame 1. When the printed matter rotates and rubs in the roller 2, the falling powder will fall through the hollow structure of the side wall of the roller 2 and directly fall into the powder falling funnel 11 below.
[0052] The bottom of the powder falling funnel 11 is usually connected to a powder collecting container, such as a hopper, a dust collecting bag, etc. In this way, the falling powder can be directly collected into the container, facilitating subsequent processing, such as recycling or disposal.
[0053] In order to enhance the running stability of the roller 2 and simplify the disassembly process, the present application designs a support structure below the roller 2. The support structure is composed of several support frames 6, which are evenly distributed on both sides of the roller 2 and are in contact with the roller 2 through the rolling bodies 61 on the upper end.
[0054] The rolling body 61 is preferably a universal ball that can roll in all directions. The structural characteristics of the universal ball allow it to roll freely in all directions, effectively reducing the frictional resistance during the rotation of the roller 2 and improving the rotation stability and efficiency of the roller 2. At the same time, the support of the universal ball also enhances the stability of the roller 2, preventing it from shaking or shifting during rotation.
[0055] In addition to supporting the roller 2 and assisting its rotation, these support frames 6 and rolling bodies 61 also play an important role in the disassembly process of the roller 2. When the roller 2 needs to be disassembled, the support frames 6 and rolling bodies 61 can serve as guides and fulcrums, making it easy for the operator to smoothly pull out or push in the roller 2 from the frame 1. The rolling characteristics of the universal ball make the disassembly process of the roller 2 more labor-saving, even for heavy rollers 2, which can be easily disassembled.
[0056] The design of this support structure not only improves the running stability and efficiency of the roller 2, but also simplifies the disassembly process of the roller 2, making it easier to maintain and maintain the equipment.
[0057] In order to further protect the safety of the printed matter during the powder cleaning process and prevent the printed matter from being damaged by colliding with the roller 2, the present application installs a buffer pad 7 on the inner side wall of the roller 2.
[0058] The buffer pad 7 is made of flexible materials such as rubber, silicone, foam plastic, etc., which have good elasticity and buffering performance. When the printed matter rotates and rubs in the roller 2, the buffer pad 7 can effectively absorb the collision energy between the printed matter and the roller 2, preventing the surface of the printed matter from being scratched or damaged, especially for some complex-shaped and fragile-surfaced printed matters, the protective effect of the buffer pad 7 is particularly important.
[0059] In order to ensure the effect of cleaning powder, the buffer pad 7 is also designed as a hollow structure. The hollow structure is in harmony with the hollow structure of the side wall of the roller 2, which can ensure that the powder can smoothly fall into the collecting device below through the hollow part of the buffer pad 7 and the side wall of the roller 2, and will not affect the discharge of the powder due to the installation of the buffer pad 7. The hollow structure of the buffer pad 7 can be consistent with the hollow structure of the side wall of the roller 2, or a different hollow pattern can be adopted, and the key is to ensure sufficient air permeability and powder discharge capacity.
[0060] In order to further improve the cleanliness of the working environment, reduce dust pollution and protect the health of the operator, the utility model discloses a negative pressure adsorption device 8 arranged on the rack 1. The device can effectively adsorb the free powder generated in the powder cleaning process and discharge it to the outside of the equipment or concentrate the treatment.
[0061] The negative pressure adsorption device 8 can adopt various implementation manners, for example:
[0062] Negative pressure gas source: a special negative pressure gas source can be connected, and the air around the roller 2 is sucked into the negative pressure gas source through a pipeline, so that the free powder is also sucked away.
[0063] Exhaust fan: one or more exhaust fans can be installed on the rack 1, and the air around the roller 2 is sucked in and discharged through the rotation of the fan, so as to take away the free powder.
[0064] Combined mode: the negative pressure gas source and the exhaust fan can be used in combination to achieve better adsorption effect.
[0065] The specific position and quantity of the negative pressure adsorption device 8 can be adjusted according to actual needs, for example, the adsorption port can be arranged near the opening of the roller 2, or a plurality of adsorption ports can be arranged on the top or side of the rack 1 to maximize the coverage of the dust generating area.
[0066] In order to improve the collection efficiency of dust, a filter or dust bag can be arranged at the suction inlet of the negative pressure adsorption device 8 to collect the adsorbed powder, which is convenient for subsequent treatment or recycling.
[0067] The addition of the negative pressure adsorption device 8 effectively solves the problem of dust flying in the powder cleaning process, significantly improves the air quality of the working environment, reduces the risk of operators inhaling dust, protects the health of operators, and improves the overall performance and user experience of the equipment.
[0068] The powder cleaning device disclosed by the utility model realizes the efficient, safe and convenient 3D printing part powder cleaning function, and significantly improves the post-processing efficiency. Compared with the traditional manual powder cleaning method and the existing powder cleaning equipment, the utility model has the following obvious advantages:
[0069] 1) Clearer powder: the utility model adopts the way of roller rotation combined with blowing to clear powder. The roller rotation makes the printing parts rub each other inside, effectively removing most of the powder; at the same time, the directional blowing function of the blowing device can remove the powder remaining in the complex structure and small gap of the printing part, realize more thorough powder cleaning effect, and significantly improve the powder cleaning quality.
[0070] 2) More convenient to disassemble: the detachable connection structure between the roller 2 and the rack 1 makes the disassembly process of the roller 2 extremely simple and fast, without the need for complex tools and cumbersome operation steps, so that the disassembly of the roller 2 can be easily completed, greatly facilitating the later maintenance, cleaning and other operations, effectively reducing the maintenance cost and time.
[0071] 3) More stable operation: the uniformly arranged support frame and universal ball rolling body below the roller 2 not only effectively support the roller 2, but also assist its stable rotation, greatly improve the running stability of the device, avoid the shaking and noise in the running process, prolong the service life of the equipment.
[0072] 4) Higher safety: the utility model can realize automatic powder cleaning, reduce manual participation, and the negative pressure adsorption device 8 can effectively adsorb the free dust in the air, reduce the dust concentration in the working environment, protect the health and safety of the operators, and create a cleaner and more comfortable working environment.
[0073] 5) Better protection of parts: the buffer pad design of the inner wall of the roller 2 effectively prevents the collision between the printing parts and the roller 2, avoids the damage of the printing parts, and improves the yield.
[0074] In summary, the powder cleaning device of the utility model has many advantages such as high efficiency, safety, convenience and so on.
Claims
1. A convenient and efficient flour cleaning device, characterized in that: The utility model provides a kind of powder blowing device, including rack (1), the drum (2) is rotatably connected on the rack (1), the inner end of the drum (2) is closed while outer end is equipped with opening, the side wall of the drum (2) is hollow, the driving device (3) for driving its rotation is connected to the drum (2), the rack (1) is also equipped with blowing device (4), and the blowing device (4) includes gas supply device (41) and blowing execution component (42) connected with gas supply device (41) and can be blown from opening into the drum (2) and blow.
2. The high-efficient and convenient powder cleaning device according to claim 1, characterized in that: The blowing execution component (42) includes a flexible pipe (421) that can be universally bent, and a blowing head (422) provided at the end of the flexible pipe (421).
3. The device according to claim 2, characterized in that: The flexible pipe (421) is provided with a magnetic suction element (423) that can be adsorbed on the rack (1).
4. The device according to claim 1, characterized in that: A detachable connection structure (5) is provided between the drum (2) and the rack (1).
5. The device according to claim 4, characterized in that: The detachable connection structure (5) includes a rotating sleeve (51) rotatably connected to the rack (1) and drivingly connected to the driving device (3), and a rotating shaft (21) provided at the center of the inner end of the drum (2). The rotating sleeve (51) is provided with an axial connecting hole (511) at the center thereof, and a pin hole (512) leading to the connecting hole (511) is provided on the side wall of the rotating sleeve (51). A latch pin (52) is provided in the pin hole (512). The rotating shaft (21) is provided with a circumferential slot (211), and the rotating shaft (21) is inserted into the connecting hole (511) and the inner end of the latch pin (52) is clamped in the slot (211). The connecting hole (511) and the rotating shaft (21) are provided with circumferential limiting structures to limit the relative rotation of the two.
6. The device according to claim 1, wherein: The drum (2) is inclined and the open outer end faces upward.
7. The device according to claim 1, wherein: A plurality of support frames (6) are provided below the drum (2) and evenly arranged on both sides of the drum (2). The upper end of the support frame (6) is provided with a rolling body (61), which is a universal ball that can roll universally.
8. The device according to claim 1, wherein: A powder falling funnel (11) is provided on the rack (1) below the drum (2).
9. The device according to claim 1, wherein: A buffer pad (7) is attached and installed on the inner side wall of the drum (2), and the buffer pad (7) is also hollow.
10. The device according to claim 1, characterized in that: A negative pressure adsorption device (8) for adsorbing free powder in air is provided on the rack (1).