A metal powder production device for additive manufacturing

Abstract

The invention discloses a metal powder production device for additive manufacturing, which belongs to the technical field of metal powder processing. The technical key points are: it includes a box body, and the falling raw materials can be crushed by a crushing mechanism. The grinding drive mechanism not only realizes the reciprocating grinding processing of the metal powder, but also can realize the scraping processing of the inner wall of the box body accordingly. The reciprocating swing of the grinding roller and the intermittent vibration of the arc sieve plate form an efficient collaborative operation mechanism, which greatly improves the production efficiency. The vibration of the arc sieve plate correspondingly promotes the uniform distribution of the powder after grinding, making the grinding effect more ideal. The circulating cooling mechanism can make the extracted coolant continuously circulate inside the hollow rotating tube on the grinding roller. The circulation of the coolant can effectively reduce the friction and wear between the grinding roller and the metal powder, and extend the service life of the grinding roller. It has the advantages of high grinding processing efficiency and convenient cooling and grinding.

Description

Technical Field

[0001] The invention relates to the field of metal powder processing, and in particular to a metal powder production device for additive manufacturing. Background Art

[0002] Additive manufacturing generally requires the use of metal powder to produce physical objects. Metal powder is a loose substance whose performance comprehensively reflects the properties of the metal itself, the properties of individual particles, and the characteristics of particle groups. Metal powder can be used as a raw material for powder metallurgy products, or it can be used directly. It has a high application value. In the process of metal production and processing, grinding equipment is usually used to achieve metal production and processing.

[0003] In the production and processing of metal powder, mechanical crushing or chemical reduction is usually used for production and manufacturing. Mechanical crushing is to transport solid metal materials to the crushing structure, crush them through the crushing structure, and further reduce the particle size of the powder by grinding and other methods. However, as the grinding roller continues to grind, the friction temperature of the grinding roller gradually increases. On the one hand, the high temperature environment affects the strength of the metal powder, causing the metal powder to undergo compression deformation during the grinding process. On the other hand, excessively high temperatures can easily increase the overall temperature of the equipment, which can easily lead to burns when the operator is operating and managing the equipment. It is impossible to automatically realize the operation of grinding and cooling at the same time, and cannot meet the actual use requirements.

[0004] Therefore, it is necessary to provide a metal powder production device for additive manufacturing to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a metal powder production device for additive manufacturing, aiming to solve the technical problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A metal powder production device for additive manufacturing, comprising a box body, a feed port is arranged on the box body, an arc-shaped sieve plate for grinding and screening is arranged in the box body, a grinding roller for grinding is arranged on the arc-shaped sieve plate, and further comprising:

[0008] A crushing mechanism, which is installed below the feed port and is used to crush the incoming metal raw materials;

[0009] A grinding drive mechanism, which is installed at the internal connection between the grinding roller and the box body, and is used to drive the crushing mechanism to operate and drive the grinding roller to perform reciprocating grinding processing. The grinding drive mechanism includes a main shaft, a fan gear and a first connecting rod for driving the grinding roller to reciprocate and rotate. The grinding roller is movably installed on the main shaft, and the main shaft is rotatably installed inside the box body. The main shaft is fixedly connected with a first gear, and the first gear is meshed with a fan gear. The fan gear is fixedly connected with a first connecting rod through a first connecting shaft, and the first connecting rod is rotatably installed inside the box body through the first connecting shaft;

[0010] A circulating cooling mechanism is installed at the connection between the main shaft and the box body, and is driven by the grinding drive mechanism. It is used to circulate and transport the coolant to the inside of the grinding roller for cooling treatment. The circulating cooling mechanism includes an inlet guide pipe, an outlet guide pipe and a switching water pipe for circulating the coolant. The grinding roller is rotatably installed on the first connecting plate through a hollow rotating pipe. The inlet guide pipe and the outlet guide pipe are both connected to the hollow rotating pipe through the switching water pipe, and the switching water pipes are both limitedly slidably connected to the inside of the inlet guide pipe and the outlet guide pipe, and the inlet guide pipe and the outlet guide pipe are penetrated into the inside of the main shaft.

[0011] As a further solution of the present invention, the grinding drive mechanism also includes a connecting sleeve, a connecting slide rod and a spring for driving the grinding roller to perform an elastic grinding connection. A second connecting plate is fixedly connected to the main shaft, and the second connecting plate is slidingly connected to the first connecting plate in an upper limit position. The adapter water pipe is butt-mounted on the first connecting plate, and a connecting sleeve is fixedly connected to the second connecting plate. A connecting slide rod is slidingly connected to the connecting sleeve in a limited position. A spring is provided at the internal connection between the connecting slide rod and the connecting sleeve, and one end of the connecting slide rod is fixedly connected to a protective cover. The protective cover is installed on the outside of the adapter water pipe and fixedly installed on the first connecting plate, and a number of cleaning bristles for scraping are provided on the protective cover.

[0012] As a further solution of the present invention, the grinding drive mechanism also includes a third connecting shaft and a second connecting rod for driving the main shaft to reciprocate, the second connecting rod is rotatably mounted on the box body through the third connecting shaft, one end of the second connecting rod is fixedly connected to the first driving rod, the first connecting rod is provided with a driving groove adapted for sliding connection with the first driving rod, the third connecting shaft is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly mounted on the outside of the box body through a mounting cover.

[0013] As a further solution of the present invention, the grinding drive mechanism also includes a ball head impact rod and an arc-shaped connecting plate for driving the arc-shaped screen plate for intermittent vibration screening. The number of the ball head impact rods is several and they are all fixedly mounted on the second connecting shaft. The ball head impact rod is arranged at the lower side close to the arc-shaped screen plate. The second connecting shaft is rotatably mounted inside the box body. A second gear is fixedly connected to the second connecting shaft. The arc-shaped connecting plate is fixedly connected to one end of the first connecting rod. A plurality of driving teeth meshing with the second gear are arranged on the arc-shaped connecting plate.

[0014] As a further solution of the present invention, the crushing mechanism includes a first crushing roller and a second crushing roller for crushing processing, the first crushing roller and the second crushing roller are both rotatably installed inside the box, a first material guide plate for guiding material is arranged below the feed port, the first crushing roller and the second crushing roller are arranged below the first material guide plate, the first crushing roller and the second crushing roller are rotatably connected via a gear pair, the rotating shaft on the second crushing roller is rotatably connected to a third connecting shaft via a synchronous belt, and a second material guide plate for guiding material is arranged below the first crushing roller and the second crushing roller.

[0015] As a further solution of the present invention, the circulating cooling mechanism also includes an infusion cylinder and a piston for circulating water into the liquid inlet guide pipe, the piston is slidably connected to the interior of the infusion cylinder by a piston rod, the infusion cylinder is fixedly installed on the box body, the infusion cylinder is connected to the interior of the water storage tank through a water pumping pipe, the water pumping pipe extends into the bottom of the water storage tank, the infusion cylinder is also connected to the liquid inlet guide pipe through the water pipe and the first elastic hose, the liquid outlet guide pipe is connected to the water storage tank through the second elastic hose, the second elastic hose extends into the upper part of the interior of the water storage tank, the water pumping pipe is provided with a water inlet check valve, and the water pipe is provided with a water outlet check valve.

[0016] As a further solution of the present invention, the circulating cooling mechanism also includes a rotating disk and a third connecting rod for driving the piston to move back and forth, one end of the piston rod is fixedly connected to a pressing plate, one end of the third connecting rod is hingedly connected to the pressing plate, the other end of the third connecting rod is rotatably connected to the rotating disk through a second driving rod, the rotating disk is fixedly connected to the rotating shaft of the second crushing roller through a fourth connecting shaft, a refrigeration plate for refrigeration is provided at the bottom of the water tank, and the water tank is fixedly installed on the outside of the box body.

[0017] As a further solution of the present invention, a material guide slope is provided below the arc-shaped screen plate, a material discharge port is provided on one side of the material guide slope, and supporting feet are provided at the bottom of the box body for support.

[0018] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0019] The grinding drive mechanism provided in the present invention can drive the crushing mechanism to crush the falling raw materials. The grinding drive mechanism not only realizes the reciprocating grinding processing of the metal powder, but also can realize the scraping processing of the inner wall of the box, thereby avoiding the metal powder from adhering to the inner wall of the box, thereby further improving the production and processing efficiency of the metal powder. The reciprocating swing of the grinding roller and the intermittent vibration of the arc screen plate form an efficient collaborative operation mechanism. This design ensures the seamless connection of the grinding and screening processes. The metal powder can be better screened by the arc screen plate after grinding, which greatly improves the production efficiency. The vibration of the arc screen plate correspondingly promotes the uniform distribution of the powder after grinding, making the grinding effect more ideal. In addition, the collaborative operation of the grinding roller and the arc screen plate correspondingly reduces the independent operation time of the equipment, thereby reducing energy consumption.

[0020] The circulating cooling mechanism can make the extracted coolant circulate continuously inside the hollow rotating tube on the grinding roller, thereby taking away the heat on the grinding roller. The circulation of the coolant can effectively reduce the friction and wear between the grinding roller and the metal powder, thereby extending the service life of the grinding roller. It can not only prevent the grinding roller from overheating, but also avoid the deformation or deterioration of the metal powder due to high temperature, thereby improving the grinding efficiency, and at the same time make the grinding of the metal powder more uniform, further improving the grinding quality.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the invention.

[0023] Figure 2 It is a side structural schematic diagram of an embodiment of the invention.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure inside the embodiment of the invention.

[0025] Figure 4 It is a schematic diagram of the connection structure inside the mounting cover in an embodiment of the invention.

[0026] Figure 5 It is a schematic diagram of the internal connection structure of an embodiment of the invention.

[0027] Figure 6 It is a schematic side view of the internal connection structure of an embodiment of the invention.

[0028] Figure 7 It is a schematic diagram of the connection structure of the main shaft in an embodiment of the invention.

[0029] Figure 8 It is a side view structural schematic diagram of the main shaft connection in an embodiment of the invention.

[0030] Fig. 9 It is a schematic diagram of the explosion structure of the protective cover connection in the embodiment of the invention.

[0031] Fig.10 It is a front structural schematic diagram of the first connecting plate connection in an embodiment of the invention.

[0032] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of A.

[0033] Fig.12 It is a schematic diagram of the cross-sectional structure of the water tank connection in an embodiment of the invention.

[0034] Fig.13 for Fig.12 Schematic diagram of the enlarged structure of B.

[0035] Figure numerals: 1, box body; 2, feed inlet; 3, first guide plate; 4, first crushing roller; 5, second crushing roller; 6, gear pair; 7, second guide plate; 8, arc-shaped screen plate; 9, grinding roller; 10, hollow rotating tube; 11, first connecting plate; 12, second connecting plate; 13, main shaft; 14, liquid inlet guide pipe; 15, liquid outlet guide pipe; 16, transfer water pipe; 17, connecting sleeve; 18, connecting slide rod; 19, spring; 20, protective cover; 21, cleaning bristles; 22, first gear; 23, sector gear; 24, first connecting shaft; 25, first connecting rod; 26, driving groove; 27, first driving rod; 28, arc-shaped connecting plate; 29. driving teeth; 30. second gear; 31. second connecting shaft; 32. ball head impact rod; 33. second connecting rod; 34. third connecting shaft; 35. synchronous belt; 36. driving motor; 37. mounting cover; 38. fourth connecting shaft; 39. rotating disk; 40. second driving rod; 41. third connecting rod; 42. pressing plate; 43. piston rod; 44. piston; 45. infusion cylinder; 46. water pumping pipe; 47. water inlet check valve; 48. first elastic hose; 49. water outlet check valve; 50. second elastic hose; 51. water storage tank; 52. refrigeration plate; 53. material guide slope; 54. material outlet; 55. supporting foot; 56. water guide pipe. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0038] Example 1

[0039] See also Figures 1 to 11 A metal powder production device for additive manufacturing includes a box body 1, a feed port 2 is provided on the box body 1, an arc-shaped sieve plate 8 for grinding and screening is provided in the box body 1, a grinding roller 9 for grinding is provided on the arc-shaped sieve plate 8, and further includes:

[0040] A crushing mechanism, which is installed below the feed port 2 and is used to crush the incoming metal raw materials;

[0041] The grinding drive mechanism is installed at the internal connection between the grinding roller 9 and the casing 1, and is used to drive the crushing mechanism to operate and drive the grinding roller 9 to perform reciprocating grinding processing. The grinding drive mechanism includes a main shaft 13, a fan gear 23 and a first connecting rod 25 for driving the grinding roller 9 to reciprocate and rotate. The grinding roller 9 is movably installed on the main shaft 13, and the main shaft 13 is rotatably installed inside the casing 1. The main shaft 13 is fixedly connected with a first gear 22, and the first gear 22 is meshed with a fan gear 23. The fan gear 23 is fixedly connected with a first connecting rod 25 through a first connecting shaft 24, and the first connecting rod 25 is rotatably installed inside the casing 1 through the first connecting shaft 24.

[0042] Furthermore, the grinding drive mechanism also includes a connecting sleeve 17, a connecting slide rod 18 and a spring 19 for driving the grinding roller 9 to perform an elastic grinding connection. The second connecting plate 12 is fixedly connected to the main shaft 13, and the second connecting plate 12 is connected to the first connecting plate 11 in an upper limit sliding connection. The adapter water pipe 16 is docked and installed on the first connecting plate 11, and the second connecting plate 12 is fixedly connected to the connecting sleeve 17. The connecting slide rod 18 is connected to the inner limit sliding connection of the connecting sleeve 17. A spring 19 is provided at the internal connection between the connecting slide rod 18 and the connecting sleeve 17. One end of the connecting slide rod 18 is fixedly connected to the protective cover 20, and the protective cover 20 is installed on the outside of the adapter water pipe 16 and fixedly installed on the first connecting plate 11. The protective cover 20 is provided with a plurality of cleaning bristles 21 for scraping.

[0043] Furthermore, the grinding drive mechanism also includes a third connecting shaft 34 and a second connecting rod 33 for driving the main shaft 13 to reciprocate. The second connecting rod 33 is rotatably installed on the box body 1 through the third connecting shaft 34. One end of the second connecting rod 33 is fixedly connected to the first driving rod 27. The first connecting rod 25 is provided with a driving groove 26 that is adapted to be slidably connected to the first driving rod 27. The third connecting shaft 34 is fixedly connected to the output shaft of the driving motor 36, and the driving motor 36 is fixedly installed on the outside of the box body 1 through the mounting cover 37.

[0044] Furthermore, the grinding drive mechanism also includes a ball head impact rod 32 and an arc-shaped connecting plate 28 for driving the arc-shaped screen plate 8 for intermittent vibration screening. There are several ball head impact rods 32 and they are all fixedly mounted on the second connecting shaft 31. The ball head impact rod 32 is arranged at the lower side close to the arc-shaped screen plate 8. The second connecting shaft 31 is rotatably mounted inside the box body 1. The second connecting shaft 31 is fixedly connected to the second gear 30. The arc-shaped connecting plate 28 is fixedly connected to one end of the first connecting rod 25. The arc-shaped connecting plate 28 is provided with several driving teeth 29 meshing with the second gear 30.

[0045] Furthermore, the crushing mechanism includes a first crushing roller 4 and a second crushing roller 5 for crushing processing, the first crushing roller 4 and the second crushing roller 5 are both rotatably installed inside the box body 1, a first material guide plate 3 for guiding material is arranged below the feed port 2, the first crushing roller 4 and the second crushing roller 5 are arranged below the first material guide plate 3, the first crushing roller 4 and the second crushing roller 5 are rotatably connected through a gear pair 6, the rotating shaft on the second crushing roller 5 is rotatably connected to the third connecting shaft 34 through a synchronous belt 35, and a second material guide plate 7 for guiding material is arranged below the first crushing roller 4 and the second crushing roller 5.

[0046] Furthermore, a material guiding slope 53 is provided below the arc-shaped screen plate 8 , a material discharging port 54 for discharging materials is provided on one side of the material guiding slope 53 , and supporting feet 55 for support are provided at the bottom of the box body 1 .

[0047] Preferably, when the metal powder production and processing operation is carried out, the raw material to be processed is placed into the interior of the box body 1 through the feed port 2, and the output shaft of the drive motor 36 is driven to drive the second crushing roller 5 to rotate under the synchronous driving action of the synchronous belt 35, and the first crushing roller 4 and the second crushing roller 5 are driven to rotate in opposite directions under the meshing transmission connection relationship of the gear pair 6, so as to realize the crushing processing of the raw material falling from the first guide plate 3, and the raw material crushed by the first crushing roller 4 and the second crushing roller 5 falls onto the arc screen plate 8 for screening processing under the guidance of the second guide plate 7.

[0048] The driving motor 36 correspondingly drives the second connecting rod 33 on the third connecting shaft 34 to rotate, so that the first driving rod 27 on the second connecting rod 33 and the driving groove 26 in the first connecting rod 25 are adapted to be connected, so that the first connecting rod 25 drives the fan gear 23 on the first connecting shaft 24 to swing back and forth. At this time, the fan gear 23 is meshed with the first gear 22 to drive the main shaft 13 to swing back and forth, thereby realizing the reciprocating grinding of the raw materials on the arc-shaped screen plate 8. Since the first connecting plate 11 connected to the grinding roller 9 is limitedly slidably connected to the inside of the second connecting plate 12, and the first The connecting slide rod 18 on the connecting plate 11 is limitedly slidably connected to the inside of the connecting sleeve 17, so that under the elastic action of the spring 19, the grinding roller 9 is always driven to be in elastic and close contact with the arc screen plate 8, thereby realizing the grinding processing of the metal powder well, and the outer side of the first connecting plate 11 is correspondingly provided with a protective cover 20 and a cleaning bristle 21, so that the first connecting plate 11 can swing back and forth while the cleaning bristle 21 arranged on the side of the protective cover 20 can be used to scrape the inner wall of the box body 1, thereby avoiding the metal powder from sticking to the inner wall of the box body 1, thereby further improving the production and processing efficiency of the metal powder.

[0049] In addition, while the first connecting rod 25 is swinging back and forth, it also drives the arc-shaped connecting plate 28 to swing back and forth accordingly. Under the relationship between the driving teeth 29 on the arc-shaped connecting plate 28 and the meshing connection with the second gear 30, the ball head impact rod 32 on the second connecting shaft 31 is driven to rotate back and forth, thereby realizing the impact operation on the bottom of the arc-shaped screen plate 8, thereby realizing the vibration screening and material discharge processing of the arc-shaped screen plate 8, which not only avoids the blockage of the screening at the arc-shaped screen plate 8, but also correspondingly improves the screening efficiency of the arc-shaped screen plate 8, thereby significantly improving the production and processing efficiency of the metal powder. The metal powder screened by the arc-shaped screen plate 8 can be discharged from the discharge port 54 under the guidance of the guide slope 53, so as to facilitate collection and processing.

[0050] The reciprocating swing of the grinding roller 9 and the intermittent vibration of the arc sieve plate 8 form an efficient collaborative operation mechanism. This design ensures the seamless connection between the grinding and screening processes. The metal powder can be better screened by the arc sieve plate 8 after grinding, which greatly improves the production efficiency. The reciprocating swing of the grinding roller 9 helps the metal powder to be more fully mixed and ground in the arc sieve plate 8, and the vibration of the arc sieve plate 8 correspondingly promotes the uniform distribution of the powder after grinding, making the grinding effect more ideal and the powder particle size more uniform. The collaborative operation of the grinding roller 9 and the arc sieve plate 8 correspondingly reduces the independent operation time of the equipment, thereby reducing energy consumption.

[0051] It should be particularly noted that the rotating shaft on the second crushing roller 5 and the third connecting shaft 34 are both provided with pulleys which are synchronously connected with the synchronous belt 35 .

[0052] Example 2

[0053] like Figures 1 to 13 As shown, on the basis of Example 1, this embodiment further includes a circulating cooling mechanism, which is installed at the connection between the main shaft 13 and the housing 1 and is driven by the grinding drive mechanism to circulate and transport the coolant to the interior of the grinding roller 9 for cooling treatment. The circulating cooling mechanism includes an inlet guide pipe 14, an outlet guide pipe 15 and a switching water pipe 16 for circulating the coolant. The grinding roller 9 is rotatably installed on the first connecting plate 11 through the hollow rotating pipe 10. The inlet guide pipe 14 and the outlet guide pipe 15 are both connected to the hollow rotating pipe 10 through the switching water pipe 16, and the switching water pipe 16 is limitedly slidably connected to the inside of the inlet guide pipe 14 and the outlet guide pipe 15, and the inlet guide pipe 14 and the outlet guide pipe 15 are penetrated into the interior of the main shaft 13.

[0054] Furthermore, the circulating cooling mechanism also includes an infusion cylinder 45 and a piston 44 for circulating water into the liquid inlet guide tube 14. The piston 44 is slidably connected to the inside of the infusion cylinder 45 through a piston rod 43. The infusion cylinder 45 is fixedly installed on the box body 1. The infusion cylinder 45 is connected to the inside of the water storage tank 51 through a water pumping pipe 46. The water pumping pipe 46 extends into the bottom of the water storage tank 51. The infusion cylinder 45 is also connected to the liquid inlet guide tube 14 through a water guide tube 56 and a first elastic hose 48. The liquid outlet guide tube 15 is connected to the water storage tank 51 through a second elastic hose 50. The second elastic hose 50 extends into the upper part of the interior of the water storage tank 51. A water inlet check valve 47 is provided on the water pumping pipe 46, and a water outlet check valve 49 is provided on the water guide tube 56.

[0055] Furthermore, the circulating cooling mechanism also includes a rotating disk 39 and a third connecting rod 41 for driving the piston 44 to reciprocate, one end of the piston rod 43 is fixedly connected to a pressing plate 42, one end of the third connecting rod 41 is hingedly connected to the pressing plate 42, the other end of the third connecting rod 41 is rotatably connected to the rotating disk 39 through a second driving rod 40, the rotating disk 39 is fixedly connected to the rotating shaft of the second crushing roller 5 through a fourth connecting shaft 38, a refrigeration plate 52 for refrigeration is provided at the bottom of the water tank 51, and the water tank 51 is fixedly installed on the outside of the box body 1.

[0056] Preferably, in the present embodiment, while the grinding roller 9 is reciprocatingly grinding on the arc-shaped screen plate 8, the grinding roller 9 is in continuous contact with the metal powder, which can easily cause the temperature of the grinding roller 9 to rise sharply. Therefore, the present application drives the rotating disk 39 on the fourth connecting shaft 38 to rotate correspondingly while the second crushing roller 5 rotates. Under the relationship that the second driving rod 40 on the rotating disk 39 is rotatably connected with the third connecting rod 41 and the third connecting rod 41 is hinged with the pressing plate 42, the piston rod 43 is driven to drive the piston 44 to reciprocate inside the infusion cylinder 45. Under the action of the water inlet check valve 47 provided on the water pumping pipe 46 and the water outlet check valve 49 provided on the water guide pipe 56, the water pumping pipe 46 can be driven to extract the cooling water in the water storage tank 51. The water pumped into the infusion cylinder 45 is pumped into the piston 44. Under the pushing action, the coolant enters the interior of the liquid inlet guide pipe 14 through the water guide pipe 56 and the first elastic hose 48. At this time, the coolant passes through the adapter water pipe 16, the hollow rotating pipe 10, the adapter water pipe 16 and the liquid outlet guide pipe 15 in sequence. The liquid discharged from the liquid outlet guide pipe 15 enters the interior of the water storage tank 51 through the second elastic hose 50, so that the coolant is continuously circulated in the interior of the hollow rotating pipe 10 on the grinding roller 9, thereby taking away the heat on the grinding roller 9. The circulation of the coolant can effectively reduce the friction and wear between the grinding roller 9 and the metal powder, thereby extending the service life of the grinding roller 9, not only preventing the grinding roller 9 from overheating, but also preventing the metal powder from deformation or deterioration due to high temperature, thereby improving the grinding efficiency, and at the same time making the grinding of the metal powder more uniform, further improving the grinding quality.

[0057] In addition, since the second elastic hose 50 extends into the upper part of the water tank 51, the water pumping pipe 46 extends into the bottom of the water tank 51, and the bottom of the water tank 51 is correspondingly provided with a refrigeration plate 52 for refrigeration, the liquid extracted by the water pumping pipe 46 is always in a cooled state, and the higher temperature liquid discharged by the second elastic hose 50 is arranged above the liquid in the water tank 51, thereby avoiding the water pumping pipe 46 extracting the higher temperature liquid discharged by the second elastic hose 50, and then the coolant can be continuously circulated in the hollow rotating tube 10 on the grinding roller 9, achieving a good cooling and temperature reduction treatment of the grinding roller 9, thereby ensuring that the grinding roller 9 is in a relatively stable cooling and temperature reduction cycle, which is convenient for grinding processing.

[0058] It should be particularly noted that the components in this application are all universal standard parts or components well known to those skilled in the art, which effectively solve the technical problems raised in the background technology.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal powder production device for additive manufacturing, comprising a box (1), the box (1) being provided with a feed inlet (2), characterized in that: The box body (1) is provided with an arc-shaped sieve plate (8) for grinding and screening, and a grinding roller (9) for grinding is provided on the arc-shaped sieve plate (8), and further comprises: A crushing mechanism, which is installed below the feed inlet (2) and is used to crush the incoming metal raw materials; A grinding drive mechanism is installed at the internal connection between the grinding roller (9) and the housing (1), and is used to drive the crushing mechanism to operate and drive the grinding roller (9) to perform reciprocating grinding processing. The grinding drive mechanism includes a main shaft (13) for driving the grinding roller (9) to reciprocate and rotate, a fan gear (23) and a first connecting rod (25). The grinding roller (9) is movably installed on the main shaft (13), and the main shaft (13) is rotatably installed inside the housing (1). The main shaft (13) is fixedly connected to a first gear (22), and the first gear (22) is meshedly connected to the fan gear (23). The fan gear (23) is fixedly connected to a first connecting rod (25) via a first connecting shaft (24). The first connecting rod (25) is 5) is rotatably mounted inside the housing (1) via a first connecting shaft (24), the grinding drive mechanism further comprising a connecting sleeve (17), a connecting slide rod (18) and a spring (19) for driving the grinding roller (9) to perform elastic grinding connection, the main shaft (13) is fixedly connected to a second connecting plate (12), the second connecting plate (12) is slidably connected to the first connecting plate (11) in an upper limit position, the transfer water pipe (16) is butt-mounted on the first connecting plate (11), the second connecting plate (12) is fixedly connected to a connecting sleeve (17), the connecting sleeve (17) is slidably connected to the connecting slide rod (18) in an inner limit position, a spring (19) is provided at the internal connection between the connecting slide rod (18) and the connecting sleeve (17), the connecting sleeve (17) is fixedly connected to the connecting sleeve (17), the connecting slide rod (18) and the connecting sleeve (17) are slidably connected in an inner limit position, the connecting slide rod (18) and the connecting sleeve (17) are connected to the connecting sleeve (17), the connecting sleeve (17) is fixedly connected to the connecting sleeve (17), ... One end of the connecting slide rod (18) is fixedly connected to the protective cover (20), the protective cover (20) is installed on the outside of the adapter water pipe (16) and fixedly installed on the first connecting plate (11), and a plurality of cleaning bristles (21) for scraping are arranged on the protective cover (20), and the grinding drive mechanism also includes a third connecting shaft (34) for driving the main shaft (13) to reciprocate and rotate, and a second connecting rod (33), the second connecting rod (33) is rotatably installed on the box body (1) through the third connecting shaft (34), one end of the second connecting rod (33) is fixedly connected to the first driving rod (27), the first connecting rod (25) is provided with a driving groove (26) adapted to be slidably connected to the first driving rod (27), and the third connecting shaft ( 34) is fixedly connected to the output shaft of the driving motor (36), the driving motor (36) is fixedly installed on the outer side of the housing (1) through the mounting cover (37), the grinding drive mechanism also includes a ball head impact rod (32) and an arc connecting plate (28) for driving the arc screen plate (8) to perform intermittent vibration screening, the number of the ball head impact rod (32) is several and all are fixedly installed on the second connecting shaft (31), the ball head impact rod (32) is arranged below one side close to the arc screen plate (8), the second connecting shaft (31) is rotatably installed inside the housing (1), the second connecting shaft (31) is fixedly connected to the second gear (30), and the arc connecting plate (28) is fixedly connected to one end of the first connecting rod (25),The arc-shaped connecting plate (28) is provided with a plurality of driving teeth (29) meshingly connected with the second gear (30); A circulating cooling mechanism is installed at the connection between the main shaft (13) and the housing (1), driven by the grinding drive mechanism, and used for circulating and conveying the cooling liquid to the inside of the grinding roller (9) for cooling treatment. The circulating cooling mechanism comprises an inlet guide pipe (14), an outlet guide pipe (15) and a switching water pipe (16) for circulating the cooling liquid. The grinding roller (9) is rotatably installed on the first connecting plate (11) through a hollow rotating pipe (10). The inlet guide pipe (14) and the outlet guide pipe (15) are both connected to the hollow rotating pipe (10) through the switching water pipe (16), and the switching water pipe (16) is limitedly slidably connected to the inside of the inlet guide pipe (14) and the outlet guide pipe (15), and the inlet guide pipe (14) and the outlet guide pipe (15) are penetrated into the inside of the main shaft (13).

2. The metal powder production device for additive manufacturing according to claim 1, characterized in that: The crushing mechanism comprises a first crushing roller (4) and a second crushing roller (5) for crushing processing, the first crushing roller (4) and the second crushing roller (5) are both rotatably mounted inside the box body (1), a first material guide plate (3) for guiding materials is arranged below the feed inlet (2), the first crushing roller (4) and the second crushing roller (5) are arranged below the first material guide plate (3), the first crushing roller (4) and the second crushing roller (5) are rotatably connected via a gear pair (6), the rotating shaft on the second crushing roller (5) is rotatably connected to a third connecting shaft (34) via a synchronous belt (35), and a second material guide plate (7) for guiding materials is arranged below the first crushing roller (4) and the second crushing roller (5).

3. The metal powder production device for additive manufacturing according to claim 2, characterized in that: The circulating cooling mechanism further comprises an infusion cylinder (45) and a piston (44) for circulating water into the liquid inlet guide tube (14); the piston (44) is slidably connected to the interior of the infusion cylinder (45) via a piston rod (43); the infusion cylinder (45) is fixedly mounted on the box body (1); the infusion cylinder (45) is connected to the interior of the water storage tank (51) via a water extraction pipe (46); the water extraction pipe (46) extends into the bottom of the water storage tank (51) and is provided The infusion cylinder (45) is also connected to a liquid inlet guide tube (14) via a water guide tube (56) and a first elastic hose (48); the liquid outlet guide tube (15) is connected to a water storage tank (51) via a second elastic hose (50); the second elastic hose (50) extends into the interior of the water storage tank (51) and is arranged above the water storage tank (51); a water inlet check valve (47) is arranged on the water pumping tube (46); and a water outlet check valve (49) is arranged on the water guide tube (56).

4. The metal powder production device for additive manufacturing according to claim 3, characterized in that: The circulating cooling mechanism further comprises a rotating disk (39) and a third connecting rod (41) for driving the piston (44) to reciprocate, one end of the piston rod (43) being fixedly connected to a pressing plate (42), one end of the third connecting rod (41) being hingedly connected to the pressing plate (42), the other end of the third connecting rod (41) being rotatably connected to the rotating disk (39) via a second driving rod (40), the rotating disk (39) being fixedly connected to the rotating shaft of the second crushing roller (5) via a fourth connecting shaft (38), a refrigeration plate (52) for refrigeration being arranged at the bottom of the water storage tank (51), and the water storage tank (51) being fixedly mounted on the outer side of the box body (1).

5. The metal powder production device for additive manufacturing according to claim 1, characterized in that: A material guide slope (53) is provided below the arc-shaped screen plate (8), a material discharge port (54) for discharging materials is provided on one side of the material guide slope (53), and a support foot (55) for supporting is provided at the bottom of the box body (1).

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