A sampling device for metal powder used in additive manufacturing

Abstract

The utility model relates to metal material processing technical field and disclose a kind of sampling device for metal powder for additive manufacturing, including bunker body, further include: the sliding sleeve of being set in the top of the bunker body, the inner wall of the sliding sleeve is slidably connected with vertical cylinder, the bottom of the vertical cylinder is provided with sieve hole, the inside of the vertical cylinder is provided with conveying pipeline;Frame is bolted to the top of the bunker body;The utility model is driven vertical cylinder to drop by opening electric hydraulic rod, make sieve hole enter the inside of bunker, open fan in collection assembly to sample, the setting of sieve hole avoids that large particle size powder enters, avoids the condition of sampling pipeline blockage, while after vertical cylinder rises and resets, the stub of round plate bottom can enter the inside of sieve hole and carry out plugging, eject simultaneously the powder remaining in the inside, avoid blockage, cooperate with collection assembly, intercept and collect the powder of sampling.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing technology, specifically to a sampling device for metal powder used in additive manufacturing. Background Technology

[0002] Additive manufacturing is a digital manufacturing technology that builds three-dimensional entities by stacking materials layer by layer. It breaks through the limitations of traditional processing and can achieve efficient molding of complex structures. In metal additive manufacturing, powder is the core raw material. Due to its uniform particle size and good flowability, it can be quickly melted / sintered by laser or electron beam to precisely control the grain structure and material density, ensuring product performance. Sampling from the silo is mainly used to test the physicochemical properties of the powder, such as the purity of the components and the content of impurities. The stability of powder quality is verified by means of spectral analysis, particle size analyzer detection and other methods.

[0003] However, during the sampling process, some large-diameter powder particles may enter, which can easily clog the sampling pipe and affect the use of the sampling device. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for metal powder used in additive manufacturing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for metal powder used in additive manufacturing, comprising a hopper body, and further comprising: A sliding sleeve is installed through the top of the silo body. A vertical cylinder is slidably connected to the inner wall of the sliding sleeve. A screen hole is opened at the bottom of the vertical cylinder. A conveying pipeline is installed inside the vertical cylinder. A frame is bolted to the top of the silo body. Electro-hydraulic rods are bolted to both sides inside the frame. The output shaft of the electro-hydraulic rod is bolted to a connecting plate, and the connecting plate is bolted to the vertical cylinder. A connecting column is also bolted to the inside of the frame. The connecting column passes through the vertical cylinder and is slidably connected to it at the point of penetration. The bottom end of the connecting column extends to the lower part of the interior of the vertical cylinder and is bolted to a circular plate. Several short columns are welded to the bottom end of the circular plate. A collection assembly is also provided on one side of the silo body.

[0006] Preferably, the collection assembly includes a support plate, a box body, and a door. One end of the support plate is bolted to the hopper body. The box body is bolted to the top of the support plate. The door is hinged to the box body. A collection box is slidably connected to the lower part of the box body. A filter screen is bolted to the upper part of the box body. A fan is also bolted to one side of the top of the support plate. The inlet end of the fan is connected to the top of the box body through a pipe.

[0007] Preferably, the other end of the conveying pipeline is connected to the lower part of the surface of the box.

[0008] Preferably, the outer diameter of the circular plate is smaller than the inner diameter of the vertical cylinder.

[0009] Preferably, the number of short columns is several and they are arranged in a circular array, and the number of sieve holes is the same as the number of short columns and their positions correspond to each other.

[0010] Preferably, the delivery pipeline is designed as a flexible hose.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses an electric hydraulic rod to lower a vertical cylinder, allowing the sieve holes to enter the hopper. A fan in the collection assembly is then activated to take samples. The sieve holes are designed to prevent large-diameter powder from entering, thus avoiding blockage of the sampling pipe. Simultaneously, after the vertical cylinder rises and resets, a short column at the bottom of the circular plate can enter the sieve holes to seal them and push out any remaining powder, preventing further blockage. Combined with the collection assembly, this effectively intercepts and collects the sampled powder. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the frame and its inner side in this utility model; Figure 3 This is a schematic diagram of the internal and external structure of the vertical cylinder in this utility model; Figure 4 This is a cross-sectional view of the vertical cylinder in this utility model; Figure 5 This is a schematic diagram of the connecting column and its surface in this utility model; Figure 6 This is a schematic diagram of the conveying pipeline in this utility model; Figure 7 This is a schematic diagram of the middle box door of this utility model after it is opened; Figure 8 This is a cross-sectional view of the box body in this utility model.

[0013] In the diagram: 1. Hopper body; 2. Support plate; 3. Box body; 4. Box door; 5. Collection box; 6. Filter screen; 7. Fan; 8. Conveying pipeline; 9. Frame; 10. Electro-hydraulic rod; 11. Connecting plate; 12. Vertical cylinder; 13. Sliding sleeve; 14. Connecting column; 15. Circular plate; 16. Short column; 17. Screen hole. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-8 As shown, a sampling device for metal powder used in additive manufacturing includes a hopper body, a sliding sleeve extending through the top of the hopper body, a vertical cylinder slidably connected to the inner wall of the sliding sleeve, a sieve hole at the bottom of the vertical cylinder, and a conveying pipeline inside the vertical cylinder. The conveying pipeline is designed as a flexible hose, with one end extending to the lower part of the interior of the vertical cylinder and the other end extending to the outside of the hopper body.

[0016] A frame is bolted to the top of the hopper body. Electro-hydraulic rods are bolted to both sides inside the frame. A connecting plate is bolted to the output shaft of each electro-hydraulic rod, and the connecting plate is bolted to a vertical cylinder, thus fixing the vertical cylinder and the output shaft of the electro-hydraulic rod together. A connecting column is also bolted to the inner side of the frame. The connecting column passes through the vertical cylinder and is slidably connected to it at the point of penetration, so that the connecting column will not move with the vertical cylinder during its up-and-down movement. The bottom end of the connecting column extends to the lower part of the vertical cylinder and is bolted to a circular plate. The outer diameter of the circular plate is smaller than the inner diameter of the vertical cylinder. Several short columns are welded to the bottom end of the circular plate. A collection assembly is also provided on one side of the hopper body. The number of short columns is several and arranged in a circular array, and the number of sieve holes is the same as the number of short columns, with their positions corresponding to each other.

[0017] The collection assembly includes a support plate, a box body, and a door. One end of the support plate is bolted to the hopper body. The box body is bolted to the top of the support plate. The door is hinged to the box body and is equipped with a lock during actual use. A collection box is slidably connected to the lower part of the box body. A filter screen is bolted to the upper part of the box body. A fan is also bolted to one side of the top of the support plate. The inlet end of the fan is connected to the top of the box body through a pipe. The other end of the conveying pipe is connected to the lower part of the box body surface.

[0018] During operation, the electric hydraulic rod is activated, and its output shaft extends to drive the connecting plate and vertical cylinder to descend. At this time, the vertical cylinder drives the screen holes below to descend and penetrate into the interior of the hopper body. Simultaneously, the connecting column is fixed to the frame, and the circular plate and short column do not descend with it. The fan is turned on, which expels the air inside the box, creating a negative pressure state inside the box. At this time, an adsorption force is generated at the screen holes, and the powder inside the hopper body enters through the screen holes, while some large-diameter powders are blocked by the screen holes to prevent clogging of the sampling pipe. After the powder passes through the screen holes and the conveying pipeline into the box, it is intercepted by the filter screen.

[0019] Afterwards, the blower is turned off, and the powder intercepted by the filter falls into the collection box. Simultaneously, the electric hydraulic rod is turned on to drive the vertical cylinder to rise. The vertical cylinder rises and resets, allowing the short column at the bottom of the circular plate to enter the inside of the sieve hole to seal it. At the same time, it pushes out the powder remaining inside the sieve hole to prevent blockage. Open the box door, take out the collection box, and the sampling is completed.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for metal powder used in additive manufacturing, comprising a hopper body (1), characterized in that, Also includes: A sliding sleeve (13) is installed through the top of the silo body (1). A vertical cylinder (12) is slidably connected to the inner wall of the sliding sleeve (13). A screen hole (17) is opened at the bottom of the vertical cylinder (12). A conveying pipeline (8) is installed inside the vertical cylinder (12). A frame (9) is bolted to the top of the silo body (1). Electric hydraulic rods (10) are bolted to both sides inside the frame (9). The output shaft of the electric hydraulic rod (10) is bolted to a connecting plate (11), and the connecting plate (11) is bolted to the vertical cylinder (12). A connecting column (14) is also bolted to the inside of the frame (9). The connecting column (14) passes through the vertical cylinder (12) and is slidably connected to it at the point of penetration. The bottom end of the connecting column (14) extends to the bottom of the vertical cylinder (12) and is bolted to a circular plate (15). Several short columns (16) are welded to the bottom end of the circular plate (15). A collection assembly is also provided on one side of the silo body (1).

2. A sampling device for metal powders used in additive manufacturing according to claim 1, characterized in that: The collection assembly includes a support plate (2), a box body (3), and a box door (4). One end of the support plate (2) is bolted to the hopper body (1). The box body (3) is bolted to the top of the support plate (2). The box door (4) is hinged to the box body (3). A collection box (5) is slidably connected to the lower part of the box body (3). A filter screen (6) is bolted to the upper part of the box body (3). A fan (7) is also bolted to one side of the top of the support plate (2). The inlet end of the fan (7) is connected to the top of the box body (3) through a pipe.

3. A sampling device for metal powders used in additive manufacturing according to claim 2, characterized in that: The other end of the delivery pipeline (8) is connected to the lower part of the surface of the box (3).

4. A sampling device for metal powders used in additive manufacturing according to claim 1, characterized in that: The outer diameter of the circular plate (15) is smaller than the inner diameter of the vertical cylinder (12).

5. A sampling device for metal powders used in additive manufacturing according to claim 1, characterized in that: The number of short columns (16) is several and they are arranged in a ring array. The number of sieve holes (17) is the same as the number of short columns (16) and their positions correspond to each other.

6. A sampling device for metal powders used in additive manufacturing according to claim 1, characterized in that: The delivery pipeline (8) is designed as a flexible hose.

Images