Dust removal equipment for additive manufacturing
By designing a synchronously adjustable dust collection component and gradient filtration system in additive manufacturing equipment, the problem of dust diffusion caused by the fixed height of the dust collection head is solved, thereby improving dust capture efficiency and equipment stability.
Patent Information
- Application Number
- CN202522799925.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-12-30
AI Technical Summary
The fixed height of the dust collection head in existing additive manufacturing equipment cannot be flexibly adjusted, resulting in untimely and inefficient dust absorption. Furthermore, dust diffusion can harm the health of operators and contaminate the precision components inside the equipment.
A dust collection assembly was designed, including a mounting cover, an annular tube, a dust collection head, a dust collection box, and an air pump. The dust collection head is inclined and adjusts synchronously with the height of the print head. Combined with gradient filtration and anti-clogging components, it ensures efficient dust capture.
It achieves synchronous adjustment of the optimal suction distance between the suction head and the print head, significantly improving dust capture efficiency, reducing dust diffusion, protecting the health of operators, and preventing equipment contamination.
Smart Images
Figure CN223850002U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to additive manufacturing equipment technical field especially is related to dust removal equipment for additive manufacturing. BACKGROUND
[0002] Additive manufacturing technology is also called 3D printing technology, and the solid parts are constructed through the way of layer-by-layer accumulation of materials, and are widely used in the fields of aerospace, automobile manufacturing, medical devices, etc. In the additive manufacturing process, especially when printing is carried out by using powder materials such as metal powder and resin powder, a large amount of dust particles will be generated. These dusts not only pollute the working environment and harm the health of the operators, but also may adhere to the surface of the printed parts, affecting the printing precision and product quality; at the same time, part of the powder dust has the characteristics of inflammability and explosion, which exists the safety hidden danger.
[0003] The existing dust removal equipment for additive manufacturing is usually integrated in the printer body or used as a simple peripheral device, and the overall structure is relatively simple. Among them, the core dust suction head part often adopts fixed installation mode, and its placement height cannot be flexibly adjusted after being pre-set. In the 3D printing process, the printing head needs to continuously adjust the printing height according to the layer thickness and structure of the printing model, and the dust suction head with fixed height is difficult to always keep the best dust suction distance with the printing head, which leads to the dust generated during the operation of the printing head cannot be absorbed in time and efficiently. Especially, the dust generated during the printing process of the printing head contains a large amount of ink powder and other harmful components, if these dusts not effectively absorbed diffuse to the working environment with air flow, will seriously harm the respiratory system of the operators, and also may cause pollution to the internal precision parts of the printer, therefore, the dust removal equipment for additive manufacturing is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above technical problems, the utility model provides a dust removal equipment for additive manufacturing, the scheme is as follows:
[0005] A dust removal equipment for additive manufacturing, comprising a printer body, a printing head is installed on the outer wall of the printer body, an extrusion head and a dust suction assembly are arranged on the bottom outer wall of the printing head;
[0006] The dust suction assembly comprises a mounting cover, an annular pipe, dust suction heads, a dust collecting box and a suction pump, the mounting cover is fixedly connected to the bottom outer wall of the printing head and covers the periphery of the extrusion head, the annular pipe is fixedly connected above the mounting cover through a plurality of fixing members, the bottom outer wall of the annular pipe is provided with a plurality of dust suction heads, the bottom ends of the dust suction heads are obliquely arranged towards the extrusion head through the mounting cover, and all the dust suction heads are arranged at equal intervals in a circumferential array on the periphery of the extrusion head, the dust collecting box is fixedly connected to the outer wall of the printer body, one end of the dust collecting box is connected in communication with the annular pipe through a connecting pipe, and the suction pump is fixedly installed on the top outer wall of the dust collecting box, and the air inlet end of the suction pump is connected in communication with the other end of the dust collecting box through a suction pipe.
[0007] Preferably, a plurality of filter screens are detachably installed on the inner wall of the dust collecting box, the plurality of filter screens are arranged at equal intervals, and the filter hole diameters of the outer walls of the filter screens gradually decrease from the side close to the connecting pipe to the side close to the suction pipe.
[0008] Preferably, the outer wall of the dust collecting box is further provided with an anti-blocking assembly, the anti-blocking assembly comprises a plurality of cleaning brushes, a plurality of sliding rods and a connecting plate, the cleaning brushes are arranged in the dust collecting box, one cleaning brush is arranged beside each filter screen, the bristles of the cleaning brush are attached to the surface of the filter screen, the sliding rods are slidingly connected to the side wall of the dust collecting box, one end of the sliding rod is fixedly connected to the middle segment of the outer wall of the cleaning brush, and the other end of the sliding rod extends out of the dust collecting box and is fixedly connected to the connecting plate.
[0009] Preferably, the anti-blocking assembly further comprises a pneumatic cylinder, the pneumatic cylinder is fixedly installed on the side outer wall of the dust collecting box, and the output end of the pneumatic cylinder is fixedly connected to the outer wall of the connecting plate.
[0010] Preferably, a sealing door is hingedly connected to the outer wall of the dust collecting box, and a sealing ring is arranged on the side outer wall of the dust collecting box.
[0011] In summary, the dust suction assembly has the following beneficial technical effects:
[0012] The dust suction assembly is fixed to the bottom of the printing head through the mounting cover, can be synchronously adjusted with the printing height of the printing head, keeps the dust suction heads at the optimal dust suction distance from the extrusion head at all times, avoids the problems of untimely and inefficient dust suction caused by the change of the printing head height, and significantly improves the dust capture efficiency.
[0013] Through the coordinated action of the circumferential arrangement of the dust suction heads and the synchronous height adjustment, the dust generated in the printing process, such as toner, can be fully absorbed, and the diffusion of the dust to the working environment is greatly reduced, which not only protects the health of the operators, but also avoids the pollution of the dust to the internal precision components of the printer, and ensures the stability of the equipment operation. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1This is an overall schematic diagram of the utility model;
[0015] Figure 2 It is a three-dimensional view of the utility model from an upward perspective;
[0016] Figure 3 The schematic diagram of the sealing door is omitted in this utility model embodiment;
[0017] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.
[0018] The reference numerals in the accompanying drawings of this utility model are as follows: 1. Printer body; 2. Print head; 3. Extrusion head; 4. Mounting cover; 5. Fixing component; 6. Ring tube; 7. Dust suction head; 8. Dust collection box; 9. Sealing door; 10. Filter screen; 11. Cleaning brush; 12. Slide rod; 13. Connecting plate; 14. Cylinder; 15. Air pump; 16. Suction pipe; 17. Connecting pipe. Detailed Implementation
[0019] 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.
[0020] See Figures 1-4 The illustration shows an embodiment of the present invention, and the dust removal equipment for additive manufacturing provided will be described in detail below:
[0021] Dust removal equipment used in additive manufacturing, such as Figures 1-4 As shown, the device includes a printer body 1, which serves as the mounting base for the entire equipment. A printhead 2 is fixedly mounted on its outer wall. The printhead 2 is the core execution component in the additive manufacturing process, used to achieve the layer-by-layer deposition of material. An extrusion head 3 and a dust collection assembly are integrated into the bottom outer wall of the printhead 2. The extrusion head 3 is used to extrude the printing material into shape, which is existing technology and will not be described in detail. The dust collection assembly is used to collect the dust generated by the extrusion head 3 during operation.
[0022] The dust suction assembly is a key structure for realizing the dust removal function in the embodiment, which comprises the mounting cover 4, the annular pipe 6, the dust suction head 7, the dust collecting box 8 and the air suction pump 15. The mounting cover 4 is fixed on the bottom outer wall of the print head 2 by welding or bolt connection, and the mounting cover 4 just covers the periphery of the extrusion head 3. Such a structure design can not only provide an installation carrier for subsequent components, but also can gather dust to some extent and reduce dust diffusion.
[0023] The bottom outer wall of the annular pipe 6 is fixedly connected with a plurality of dust suction heads 7. The bottom ends of the dust suction heads 7 pass through the through holes of the mounting cover 4 and are obliquely arranged towards the extrusion head 3, and all the dust suction heads 7 are arranged at equal intervals in a circumferential array around the extrusion head 3. Such a circumferential array and oblique arrangement towards the extrusion head 3 can form a surrounding dust suction area, so as to ensure that the dust generated in all directions of the extrusion head 3 can be effectively captured and avoid the occurrence of dust suction dead angles.
[0024] The dust collecting box 8 is fixed on the outer wall of the printer body 1 through a support. One end of the dust collecting box 8 is connected in communication with the annular pipe 6 through a connecting pipe 17. The connecting pipe 17 can be a flexible corrugated pipe, which is convenient for adapting to the movement of the print head 2. The air suction pump 15 is fixedly installed on the top outer wall of the dust collecting box 8 by bolts. The air suction pipe 16 is connected in communication with the other end of the dust collecting box 8. When the air suction pump 15 is started, a negative pressure is formed in the channel composed of the dust collecting box 8, the connecting pipe 17, the annular pipe 6 and the dust suction head 7, so that the dust generated by the extrusion head 3 is sucked into the dust suction head 7.
[0025] In order to realize the graded filtration of the dust, a plurality of filter screens 10 are installed on the inner wall of the dust collecting box 8 by bolts. The plurality of filter screens 10 are arranged at equal intervals along the length direction of the dust collecting box 8, and the filter hole diameters of the filter screens 10 gradually decrease from the side close to the connecting pipe 17 to the side close to the air suction pipe 16. Such a gradient filtration design can make dusts of different particle sizes be intercepted by different filter screens 10, avoid the rapid clogging of a single filter screen 10, and also facilitate subsequent classification and treatment of dusts of different particle sizes.
[0026] To solve the problem of easy clogging of the filter screen 10 during use, the outer wall of the dust collecting box 8 is also provided with an anti-clogging assembly, which comprises a plurality of cleaning brushes 11, a plurality of sliding rods 12, a connecting plate 13 and a gas cylinder 14. The plurality of cleaning brushes 11 are arranged inside the dust collecting box 8, and each cleaning brush 11 is arranged beside the corresponding filter screen 10, and the bristles of each cleaning brush 11 are closely attached to the surface of the corresponding filter screen 10. The plurality of sliding rods 12 are respectively slidingly connected in the sliding holes opened in the side wall of the dust collecting box 8, one end of the sliding rod 12 is fixedly connected with the outer wall of the corresponding cleaning brush 11, and the other end of the sliding rod 12 extends out of the dust collecting box 8 and is fixedly connected with the connecting plate 13.
[0027] The gas cylinder 14 is fixedly installed on one side of the outer wall of the dust collecting box 8 through the mounting seat, and the output end of the gas cylinder 14 is fixedly connected with the outer wall of the connecting plate 13. When the piston rod of the gas cylinder 14 is extended or retracted, the connecting plate 13 is driven to reciprocate, and the connecting plate 13 in turn drives the cleaning brush 11 to reciprocate along the surface of the filter screen 10 through the sliding rod 12, so as to clean the dust on the surface of the filter screen 10, effectively prevent the filter screen 10 from being clogged, and ensure the continuous and stable operation of the dust removal equipment.
[0028] The outer wall of the dust collecting box 8 is hingedly connected with a sealing door 9, and the sealing door 9 is adhesively connected with a sealing ring on one side of the outer wall of the dust collecting box 8. When the sealing door 9 is closed, the sealing ring is closely attached to the outer wall of the dust collecting box 8, so as to ensure the sealing property of the inside of the dust collecting box 8 and prevent dust from leaking from the gap between the sealing door 9 and the dust collecting box 8. At the same time, after the sealing door 9 is opened, the dust inside the dust collecting box 8 can be conveniently cleaned, or the filter screen 10 which can be detachably installed can be replaced and maintained.
[0029] The working process of the embodiment is as follows: when the printer body 1 drives the print head 2 and the extrusion head 3 to perform additive manufacturing operation, the suction pump 15 is started, the suction pump 15 forms negative pressure in the dust collecting box 8 through the suction pipe 16, the negative pressure is transmitted to the annular pipe 6 through the connecting pipe 17, and then the suction force is generated through the plurality of circumferentially arranged dust collection heads 7. Since the dust collection heads 7 are inclined towards the extrusion head 3, the dust generated during the operation of the extrusion head 3 can be accurately captured, and the dust enters the annular pipe 6 through the dust collection heads 7, and then enters the dust collecting box 8 through the connecting pipe 17. The dust-containing gas entering the dust collecting box 8 successively passes through the filter screens 10 with gradually decreasing filter hole diameters, and the dust of different particle sizes is gradually intercepted and filtered, and the filtered gas is discharged by the suction pump 15.
[0030] During the operation of the device, the air cylinder 14 can be started regularly to drive the connecting plate 13, the slide rod 12 and the cleaning brush 11 to reciprocate, and the cleaning brush 11 can clean the dust on the surface of the filter screen 10, and the cleaned dust can fall to the bottom of the dust collecting box 8. When the dust in the dust collecting box 8 accumulates to a certain degree, the dust in the dust collecting box 8 can be cleaned after the device is closed and the sealing door 9 is opened. If the filter screen 10 is worn or the filtering efficiency is reduced, the filter screen 10 can be replaced by disassembling the bolts.
[0031] The above only describes the embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A dust removal device for additive manufacturing, comprising a printer body (1), a printing head (2) is mounted on the outer wall of the printer body (1), an extrusion head (3) is arranged on the bottom outer wall of the printing head (2), characterized in that: The bottom outer wall of the print head (2) is provided with a dust suction assembly; The dust suction assembly comprises a mounting cover (4), an annular pipe (6), a dust suction head (7), a dust collecting box (8) and a suction pump (15), the mounting cover (4) is fixedly connected to the bottom outer wall of the print head (2) and covers the periphery of the extrusion head (3), the annular pipe (6) is fixedly connected above the mounting cover (4) through a plurality of fixing members (5), the bottom outer wall of the annular pipe (6) is provided with a plurality of dust suction heads (7), the bottom end of the dust suction head (7) passes through the mounting cover (4) and is obliquely arranged towards the extrusion head (3), and all the dust suction heads (7) are arranged in a circumferential array at equal intervals on the periphery of the extrusion head (3), the dust collecting box (8) is fixedly connected to the outer wall of the printer body (1), one end of the dust collecting box (8) is connected in communication with the annular pipe (6) through a connecting pipe (17), and the suction pump (15) is fixedly installed on the top outer wall of the dust collecting box (8), and the gas inlet end of the suction pump (15) is connected in communication with the other end of the dust collecting box (8) through a suction pipe (16).
2. Dust extraction apparatus for additive manufacturing according to claim 1, characterized in that: A plurality of filter screens (10) are detachably installed on the inner wall of the dust collecting box (8), the plurality of filter screens (10) are arranged at equal intervals, and the filter hole diameters of the outer walls of the filter screens (10) gradually decrease from the side close to the connecting pipe (17) to the side close to the suction pipe (16).
3. Dust extraction apparatus for additive manufacturing according to claim 2, characterized in that: A blockage prevention assembly is further installed on the outer wall of the dust collecting box (8), the blockage prevention assembly comprises a plurality of cleaning brushes (11), a plurality of sliding rods (12) and a connecting plate (13), the plurality of cleaning brushes (11) are arranged in the dust collecting box (8), one cleaning brush (11) is arranged beside each filter screen (10), the bristles of the cleaning brush (11) are attached to the surface of the filter screen (10), the sliding rod (12) is slidingly connected to one side wall of the dust collecting box (8), one end of the sliding rod (12) is fixedly connected to the middle segment of the outer wall of the cleaning brush (11), and the other end of the sliding rod (12) extends out of the dust collecting box (8) and is fixedly connected to the connecting plate (13).
4. Dust extraction apparatus for additive manufacturing according to claim 3, characterised in that: The blockage prevention assembly further comprises a pneumatic cylinder (14), the pneumatic cylinder (14) is fixedly installed on one side of the outer wall of the dust collecting box (8), and the output end of the pneumatic cylinder (14) is fixedly connected to the outer wall of the connecting plate (13).
5. The dust extraction apparatus for additive manufacturing according to claim 1, characterized in that: A sealing door (9) is hingedly connected to the outer wall of the dust collecting box (8), and a sealing ring is arranged on the side of the sealing door (9) facing the outer wall of the dust collecting box (8).