Drying device for metal 3D printing supplies
By designing a metal 3D printing consumable drying device with a rotating cylinder and a stirring device, the problem of bottom condensation of traditional drying equipment is solved, and more efficient and uniform metal powder drying is achieved.
Patent Information
- Application Number
- CN202420811369.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The bottom of the traditional metal 3D printing consumables drying equipment is prone to condense, affecting the drying efficiency and quality.
A metal 3D printing consumable drying device is designed, which drives the cylinder body to rotate through the motor to fix the drying cylinder with the cylinder body. The metal powder does not come into contact with the inner wall of the drying cylinder for a long time under the action of gravity to avoid condensation, and a stirring device is set up in the drying cylinder to speed up the drying speed.
It effectively avoids the accumulation and condensation of metal powder at the bottom, improves the drying efficiency and quality, and ensures uniform drying of metal powder.
Smart Images
Figure CN222617421U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal powder drying, in particular to a metal 3D printing consumables drying device. Background Art
[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing [1]. It is a technology that uses a digital model file as the basis and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using a digital technology material printer. It is often used to make models in the fields of mold manufacturing and industrial design, and later gradually used for the direct manufacturing of some products. There are already parts printed using this technology. Compared with traditional molds, 3D printed molds have simpler manufacturing methods, steps, and processes, shortened production time, and become more efficient. In addition, the manufacturing accuracy is also high, and there is no need to measure every step like in the traditional method. Some manufacturers can even directly produce molds by purchasing metal 3D printing equipment.
[0003] In metal 3D printing technology, most of the consumables used for printing are metal powders. The selected metal powders are loaded into the nozzle or nozzle of the printer. During the printing process, the metal powders are placed on the building platform, and the melting effect of the laser beam or electric arc is used to print the metal through a layer-by-layer lifting printing method. During the production and preparation process of the metal powder used for 3D printing, a fluid mixed with metal powder and water is obtained through a grinding process, and then the metal powder fluid is dehydrated, and then the dehydrated metal powder is dried. Because the metal powder contains water, the bottom of the traditional drying equipment that uses a stirring rod to rotate is easy to condense, so we proposed a new metal powder drying equipment. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a metal 3D printing consumables drying device, which has the advantage of no condensation and solves the problem that condensation is easy to occur at the bottom of traditional drying equipment.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal 3D printing consumables drying device, comprising a drying device; the drying device comprises:
[0008] The cylinder body has an outer wall provided with a fixing seat and is rotatably connected to the fixing seat;
[0009] A motor is arranged on the outer wall of the fixing seat, and an output end thereof penetrates the fixing seat and is connected to the cylinder;
[0010] A drying cylinder is arranged inside the cylinder body, and a material inlet and outlet are arranged on the top of the drying cylinder;
[0011] A hopper, arranged on the outer side wall of the cylinder and connected with the inlet and outlet;
[0012] A heating plate is arranged on the inner wall of the cylinder;
[0013] The drying drum is provided with a stirring device, and the stirring device comprises:
[0014] A shaft body is arranged inside the drying drum and is rotatably connected to the drying drum;
[0015] The rod body is arranged at the bottom of the shaft body.
[0016] In some embodiments, a cavity is provided between the cylinder body and the drying cylinder, the heating plate is located in the cavity, and an inlet and outlet are provided at the bottom of the cylinder body, and the inlet and outlet are connected to the cavity.
[0017] In some embodiments, an air duct is provided on the outer wall of the cylinder, the air duct passes through the cylinder and is connected with the drying cylinder, and a filter is provided at one end of the air duct.
[0018] In some embodiments, a cleaning plate that cooperates with the filter is provided at one end of the shaft.
[0019] In some embodiments, the inner wall of the cylinder is provided with a heat insulation layer.
[0020] In some embodiments, a support column is provided between the cylinder body and the drying cylinder.
[0021] In some embodiments, a convex plate is provided on the inner wall of the drying cylinder, the convex plate is an inclined structure, and a groove 1 that matches the rod body is provided on the top of the convex plate.
[0022] In some embodiments, a second groove is formed inside the convex plate, and the second groove passes through the drying cylinder.
[0023] (III) Beneficial effects
[0024] Compared with the prior art, the utility model provides a metal 3D printing consumables drying device, which has the following beneficial effects:
[0025] The metal 3D printing consumables drying device drives the cylinder to rotate through a motor. The drying cylinder inside the cylinder is fixed to the cylinder, so the drying cylinder also rotates. Under the action of gravity, the metal powder will not contact the inner wall of the drying cylinder for a long time, resulting in condensation. With the help of the rod body that is always facing downward inside the drying cylinder, the metal powder is broken up, thereby accelerating the drying speed of the metal powder inside the drying cylinder and improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of the utility model;
[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the cylinder of the utility model;
[0028] Figure 3 It is a schematic diagram of the left side cross-sectional structure of the drying drum of the utility model;
[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the cleaning plate and the shaft body of the utility model.
[0030] In the figure:
[0031] 1. Drying equipment; 11. Cylinder; 111. Insulation layer; 112. Support column; 12. Fixed seat; 13. Motor; 14. Drying cylinder; 141. Inlet and outlet; 15. Hopper; 16. Cavity; 161. Heating plate; 17. Air guide tube; 171. Filter; 18. Inlet and outlet;
[0032] 2. stirring device; 21. shaft body; 22. rod body; 23. cleaning plate; 24. convex plate; 25. groove one; 26. groove two. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0034] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0035] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] During the production and preparation process of metal powder, a fluid mixed with metal powder and water is obtained through a grinding process, and then the metal powder fluid is dehydrated, and then the dehydrated metal powder is dried. After the metal powder is placed in a drying container, hot air is blown into it for drying.
[0037] In the related art, during the drying process, the block metal powder gradually loosens into granular metal powder. Under the pressure of gravity, the metal powder will accumulate in the drying container, and the gaps between the metal powders will decrease, making it difficult for hot air to pass through the metal powder on the surface to thoroughly dry the metal powder inside. The metal powder will accumulate at the bottom for a long time and easily condense.
[0038] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a metal 3D printing consumables drying device. When it is needed, it only needs to drive the cylinder 11 to rotate through the motor 13 so that the metal powder inside and the inner wall of the drying cylinder 14 do not contact in one place for a long time, thereby effectively avoiding the accumulation and condensation of the metal powder at the bottom.
[0039] The present application is described below with reference to the accompanying drawings and specific embodiments:
[0040] Combination Figure 1-Figure 4 The embodiment of the present application provides a metal 3D printing consumables drying device, including a drying device 1; the drying device 1 includes: a fixed seat 12 is arranged on the outer wall of a cylinder 11, and is rotatably connected to the fixed seat 12; a motor 13 is arranged on the outer wall of the fixed seat 12, and its output end passes through the fixed seat 12 and is connected to the cylinder 11; a drying cylinder 14 is arranged inside the cylinder 11, and an inlet and outlet port 141 is arranged on the top of the drying cylinder 14; a hopper 15 is arranged on the outer wall of the cylinder 11, and is connected to the inlet and outlet port 141; a heating plate 161 is arranged on the inner wall of the cylinder 11; a stirring device 2 is arranged on the drying cylinder 14, and the stirring device 2 includes: a shaft body 21 is arranged inside the drying cylinder 14, and is rotatably connected to the drying cylinder 14; a rod body 22 is arranged at the bottom of the shaft body 21.
[0041] When in use, first pour the metal powder into the drying cylinder 14 through the hopper 15, start the heating plate 161 to heat the drying cylinder 14, start the motor 13, and drive the cylinder 11 to rotate through the motor 13. The drying cylinder 14 inside the cylinder 11 is fixed to the cylinder 11, so the drying cylinder 14 also rotates. Under the action of gravity, the metal powder will not contact the inner wall of the drying cylinder 14 for a long time. When the drying cylinder 14 rotates, the internal shaft 21 rotates with the drying cylinder 14, and the rod 22 on the shaft 21 is a metal structure. Under the action of gravity, no matter how the drying cylinder 14 rotates, the rod 22 is always vertical downward to stir the metal powder. After drying, rotate the cylinder 11 to make the hopper face downward, and then open the valve on the hopper to discharge the metal powder.
[0042] Specifically, a rotating joint is provided at the rotating portion between the cylinder 11 and the fixing seat 12 , and a channel is provided in the rotating joint, through which the wires of the heating plate 161 are led out.
[0043] In some embodiments, a cavity 16 is provided between the cylinder 11 and the drying cylinder 14, the heating plate 161 is located in the cavity 16, and an inlet and outlet 18 is provided at the bottom of the cylinder 11, and the inlet and outlet 18 is connected to the cavity 16. The cavity 16 can be provided so that the space between the cylinder 11 and the drying cylinder 14 is filled with liquid such as water, and then heated by the heating plate 161 to transfer heat to the drying cylinder 14, which can slow down the consumption of heat and reduce production costs. The water inside the cavity 16 is injected and discharged through the inlet and outlet 18.
[0044] In some embodiments, an air duct 17 is provided on the outer wall of the cylinder 11, and the air duct 17 passes through the cylinder 11 and is connected to the drying cylinder 14. A filter screen 171 is provided at one end of the air duct 17. The air duct 17 is provided so that when the water contained in the metal powder inside the drying cylinder 14 evaporates and turns into steam, it can be discharged from the air duct 17. A filter screen 171 is provided at the part where the air duct 17 is connected to the drying cylinder 14 to prevent the metal powder from leaking out. The duct can also be connected to an air pump as needed to increase the discharge of gas.
[0045] Specifically, the air duct 17 is connected to the left and right sides of the rotating head at the rotating part of the cylinder 11 and the fixed seat 12. The air duct 17 can be set to two. The multi-channel rotary joint itself has multiple channels to meet the use of wires and air ducts 17, which facilitates the smooth airflow inside the drying cylinder 14, and even one air duct can also let in hot air to speed up the drying of the metal powder.
[0046] In some embodiments, one end of the shaft 21 is provided with a cleaning plate 23 that cooperates with the filter 171. The cleaning plate 23 is fixed on the shaft 21, and as the drying drum 14 rotates and the shaft 21 remains stationary, the cleaning plate 23 can automatically scrape and clean the metal powder on the filter 171.
[0047] In some embodiments, the inner wall of the cylinder 11 is provided with a heat insulating layer 111. The heat insulating layer 111 can reduce the temperature of the surface of the cylinder 11 to avoid scalding workers.
[0048] In some embodiments, a support column 112 is provided between the cylinder body 11 and the drying cylinder 14. The support column 112 improves the stability between the drying cylinder 14 and the cylinder body 11.
[0049] In some embodiments, the inner wall of the drying cylinder 14 is provided with a convex plate 24, the convex plate 24 is an inclined structure, and the top of the convex plate 24 is provided with a groove 25 that matches the rod body 22. The inclined convex plate 24 can better break up the metal powder when the drying cylinder 14 rotates. There are multiple convex plates 24, and they are spirally inclined in one direction. The groove 25 is provided to allow the rod body 22 to pass normally.
[0050] In some embodiments, a second groove 26 is provided inside the convex plate 24, and the second groove 26 passes through the drying cylinder 14. The second groove 26 is provided to facilitate the convex plate 24 to conduct heat and accelerate the drying effect of the metal powder.
[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.
[0052] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A metal 3D printing consumables drying device, comprising a drying device (1); the drying device (1) comprises: The cylinder (11) has an outer wall provided with a fixing seat (12) and is rotatably connected to the fixing seat (12); A motor (13) is arranged on the outer wall of the fixing seat (12), and an output end thereof penetrates the fixing seat (12) and is connected to the cylinder (11); A drying cylinder (14) is arranged inside the cylinder body (11), and a material inlet and outlet (141) is arranged at the top of the drying cylinder (14); A hopper (15) is arranged on the outer wall of the cylinder (11) and is connected to the inlet and outlet (141); A heating plate (161) is arranged on the inner wall of the cylinder (11); The invention is characterized in that: the drying cylinder (14) is provided with a stirring device (2), and the stirring device (2) comprises: A shaft (21) is disposed inside the drying cylinder (14) and is rotatably connected to the drying cylinder (14); The rod body (22) is arranged at the bottom of the shaft body (21).
2. A metal 3D printing consumables drying device according to claim 1, characterized in that: A cavity (16) is provided between the cylinder (11) and the drying cylinder (14), the heating plate (161) is located in the cavity (16), and an inlet and outlet (18) is provided at the bottom of the cylinder (11), the inlet and outlet (18) being connected to the cavity (16).
3. A metal 3D printing consumables drying device according to claim 1, characterized in that: An air guide pipe (17) is provided on the outer wall of the cylinder (11), the air guide pipe (17) passes through the cylinder (11) and is connected to the drying cylinder (14), and a filter screen (171) is provided at one end of the air guide pipe (17).
4. A metal 3D printing consumables drying device according to claim 3, characterized in that: A cleaning plate (23) that cooperates with the filter screen (171) is provided at one end of the shaft body (21).
5. A metal 3D printing consumables drying device according to claim 1, characterized in that: The inner wall of the cylinder (11) is provided with a heat insulation layer (111).
6. A metal 3D printing consumables drying device according to claim 5, characterized in that: A support column (112) is provided between the cylinder body (11) and the drying cylinder (14).
7. A metal 3D printing consumables drying device according to claim 1, characterized in that: The inner wall of the drying cylinder (14) is provided with a convex plate (24), the convex plate (24) is an inclined structure, and the top of the convex plate (24) is provided with a groove (25) that matches the rod body (22).
8. A metal 3D printing consumables drying device according to claim 7, characterized in that: A second groove (26) is provided inside the convex plate (24), and the second groove (26) passes through the drying cylinder (14).