Alloy powder feeding device and alloy powder production line

Abstract

The invention provides an alloyed powder feeding device and an alloyed powder production line, and belongs to the field of powder loading.The alloyed powder feeding device comprises a feeding barrel, a containing box and a driving mechanism, the top of the feeding barrel is a feeding port, the bottom of the feeding barrel is communicated with a feeding pipeline, the axis of the feeding barrel extends in the vertical direction, and the feeding barrel uses the first axis as a swing shaft; the feeding barrel is arranged at a preset position in a swinging mode, the axis of the top of the feeding barrel intersects with the first axis, and the swinging radius of the feeding barrel is gradually increased from top to bottom; the top of the feeding cylinder is hinged to the containing box. The driving mechanism comprises a driving motor arranged in the middle of the containing box, and the driving motor is used for driving the feeding barrel to rotate around the first axis. Compared with the prior art, through conical swinging of the feeding barrel, the alloy powder feeding speed is increased, and the technical problem that bridging and caking are likely to be generated in the feeding process of existing alloy powder distribution is solved.

Description

Technical Field

[0001] The present invention belongs to the field of powder feeding, and more specifically, relates to an alloy powder feeding device, and the present invention also relates to an alloy powder production line. Background Art

[0002] Alloy powder refers to metal powder formed by partial or complete alloying of two or more components. Alloy powders are mainly classified by composition into ferroalloy powder, copper alloy powder, nickel alloy powder, cobalt alloy powder, aluminum alloy powder, titanium alloy powder, precious metal alloy powder, etc.

[0003] However, the transmission of powder materials often faces some problems, such as easy generation of dust pollution, poor fluidity, low transmission efficiency, etc. To solve these problems, powder suction machines have emerged. In principle, the working principle of a powder suction machine mainly consists of three steps: negative pressure suction, transmission, and discharging. 1. Negative pressure suction: The powder suction machine sucks the powder material into the pipeline through a device called a "suction nozzle". The suction nozzle is in a negative pressure state, sucking the powder material into the suction nozzle and transmitting it to the target position through the pipeline. 2. Transmission: During the transmission process, the powder material is quickly transmitted in the pipeline with the support of air flow. By adjusting the speed and direction of the air flow, the transmission path and speed of the powder material can be controlled. 3. Discharging: When the powder material reaches the target position, the powder material can be discharged by opening the discharging device. The discharging device generally includes a piston, a rotary valve, etc., for controlling the release of the powder material.

[0004] During the powder conveying process, the powder may show the phenomenon of bridging and caking, resulting in poor operation of the equipment. For example, the silos of vacuum feeding machines are blocked, the silos of small bag feeding stations are blocked, and there are also blockages in various other equipment and pipelines, seriously affecting production. Arching or bridging generally has the following several types: 1) Meshing arch: The powder materials mesh with each other inside to reach a force balance state, thus forming a material arch; 2) Compression arch: The powder materials are affected by the pressure of the silo wall, increasing the consolidation strength and resulting in arching; 3) Adhesive arch: Some powder materials with strong adhesiveness may form a material arch due to the relatively high moisture content in the silo, and the material adheres to the silo wall more strongly due to moisture absorption or electrostatic action; 4) Air pressure balance arch: Some silos have poor airtightness, resulting in air entering. When the upper and lower air pressures in the silo reach equilibrium, a material arch is formed.

[0005] The above phenomena such as bridging and caking are particularly likely to occur in relatively stationary fixed pipelines, causing great adverse effects on the feeding of powder alloys and urgently needing improvement. Summary of the Invention

[0006] The object of the present invention is to provide an alloy powder feeding device to solve the technical problems that the existing alloy powder feeding is prone to bridging and caking during the feeding process.

[0007] To achieve the above object, the technical solution adopted by the present invention is: to provide an alloy powder feeding device, including:

[0008] A feeding cylinder, the top of the feeding cylinder is a feeding port, the bottom is communicated with a feeding pipeline, the axis of the feeding cylinder extends in the up and down direction, the feeding cylinder is swingably arranged at a preset position with the first axis as the swing axis, the swing path of the feeding cylinder is conical, the axis of the top of the feeding cylinder itself intersects with the first axis, and from top to bottom, the swing radius of the feeding cylinder gradually increases;

[0009] A receiving box, the top of the feeding cylinder is hinged to the receiving box;

[0010] A driving mechanism, including a driving motor arranged in the middle of the receiving box, and the driving motor is used to drive the feeding cylinder to rotate around the first axis.

[0011] In a possible implementation manner, the receiving box includes a box body and a connecting component arranged on the top of the box body. The connecting component includes a first fixed shaft, a first fixed ring, a second fixed shaft and a second fixed ring. The axis of the first fixed shaft extends along the diameter direction of the first fixed ring, and there are two first fixed shafts. The two ends in the diameter direction of the first fixed ring are respectively swingably connected to the top of the box body through the two first fixed shafts. The axis of the second fixed shaft extends along the diameter direction of the second fixed ring, and there are two second fixed shafts. The two ends in the diameter direction of the second fixed ring are respectively swingably connected to the inner side of the second fixed ring through the two second fixed shafts. The axis of the first fixed shaft and the axis of the second fixed shaft are perpendicular and intersect. The second fixed ring is coaxially sleeved on the top of the feeding cylinder.

[0012] In a possible implementation manner, the number of the feeding cylinders is multiple, and the swing axes of the feeding cylinders are all parallel to the up and down direction.

[0013] In a possible implementation manner, the driving mechanism further includes a first gear, a second gear and a connecting rod. The first gear is sleeved on the power output shaft of the driving motor, the second gear meshes with the first gear, the axis of the second gear is collinear with the first axis, the length direction of the connecting rod is perpendicular to the axis of the feeding cylinder, one end of the connecting rod is fixedly connected to the second gear, and the other end is sleeved on the outer periphery of the feeding cylinder and is rotationally adapted to the outer periphery of the feeding cylinder.

[0014] In a possible implementation, a rubber partition is provided inside the accommodating box, the edge of the rubber partition is hermetically connected to the inner wall of the accommodating box, and the first gear, the second gear, the connecting rod, and the driving motor are all located above the rubber partition.

[0015] In a possible implementation, the maximum swing angle of the feeding cylinder during conical pendulum motion ≤ 15°.

[0016] In a possible implementation, a universal interface is provided at the feeding port of the feeding cylinder, a fixed grille is provided at the top of the accommodating box, the universal interface is installed on the fixed grille, the bottom of the universal interface is soft-connected to the top of the feeding cylinder, and the top of the universal interface is used for feeding.

[0017] In a possible implementation, a corrugated pipe is provided at the bottom of the universal interface, and the corrugated pipe is used to connect the universal interface and the feeding cylinder.

[0018] In a possible implementation, the accommodating box further includes a bracket, the bracket includes a bottom leg and a top reinforcing rib integrally connected in sequence from bottom to top, both the top reinforcing rib and the bottom leg extend in the up and down direction, the top reinforcing rib is provided on the outer periphery of the box body, and the bottom leg is used to support the box body.

[0019] Compared with the prior art, the beneficial effects of the alloy powder feeding device provided by the present invention are as follows:

[0020] First of all, driven by the driving mechanism, the feeding cylinder hinged to the accommodating box can swing in a conical shape around the first axis. Furthermore, the present invention can realize the physical effect of the centrifugal force gradient distribution of the material by setting a feeding cylinder structure that can swing around the first axis and has an increasing swing radius, and cooperate with the conical pendulum motion generated by the driving motor, so that the material is affected by both gravity and centrifugal force. And the present invention can use the swing of the feeding cylinder to increase the flow rate of the alloy powder in the feeding cylinder, prevent the alloy powder from accumulating in the feeding cylinder, and effectively solve the technical problem of material accumulation in the cylinder. At the same time, the gradient design of the swing radius enables different particle size powders to obtain different accelerations, and the alloy powder in the feeding cylinder continuously collides during the feeding process, which can prevent material bridging and caking in the cylinder while also forming a self-cleaning effect.

[0021] Another object of the present invention is to propose an alloy powder production line, including the alloy powder feeding device described above.

[0022] Compared with the prior art, the alloy powder production line in the present invention has all the beneficial effects of the above alloy powder feeding device, which will not be elaborated here. In addition, the present invention integrates the alloy powder feeding device into the alloy powder production line, and can realize the closed-loop regulation of the swing frequency and the feeding rate by cooperating with the PLC control system. When the laser particle size analyzer detects a change in the powder value, the system can accurately adapt the centrifugal force field to the change in powder fluidity by automatically adjusting the rotational speed of the drive motor. Through the linkage control of the above structure, the production capacity volatility of the production line can be reduced, and at the same time, the technical problem of high unit energy consumption caused by material distribution blockage in the existing vacuum feeding can be improved, and it is beneficial to solve the technical problems of high sintering defect rate and low final product qualification rate caused by unstable feeding in the traditional production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments or the prior art descriptions. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings:

[0024] Figure 1 is a schematic external structure diagram of the alloy powder feeding device provided by the present invention;

[0025] Figure 2 is a schematic internal structure diagram of the alloy powder feeding device provided by the present invention;

[0026] Figure 3 is a schematic diagram of the positional relationship between a connecting component of the alloy powder feeding device of the present invention and the feeding cylinder.

[0027] In the figure:

[0028] 1. Feeding cylinder;

[0029] 2. Accommodating box; 21. Box body; 22. Bracket;

[0030] 3. Driving mechanism; 31. Driving motor;

[0031] 4. Connecting component; 41. First fixed shaft; 42. First fixed ring; 43. Second fixed shaft; 44. Second fixed ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0033] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connection parts" should be understood in a broad sense. For example, the connection 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 directly connected, or indirectly connected through an intermediate medium, or even the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] During the use of the existing alloy powder negative pressure feeding equipment, one end of the negative pressure feeding component extracts the alloy powder in the receiving cylinder, and the other end sends the alloy powder into the receiving bin of the alloy powder. However, during the process of the alloy powder entering the receiving bin, phenomena such as accumulation and bridging are likely to occur, thereby blocking the feeding pipe of the receiving bin. In view of this, the present invention aims to design a feeding device, which is provided with a feeding cylinder 1 that can perform a conical pendulum around a preset axis, so as to optimize the feeding pipe of the existing receiving bin and solve the technical problem that the existing alloy powder is likely to block the feeding pipe of the receiving bin during the process of entering the receiving bin.

[0037] Based on the above design concept, an alloy powder feeding device is proposed. Specifically, please refer to Figures 1 to 3 , the alloy powder feeding device in the present invention includes a feeding cylinder 1, a receiving box 2 and a driving mechanism 3. Among them, the top of the feeding cylinder 1 is a feeding port, the bottom is communicated with the feeding pipeline, the axis of the feeding cylinder 1 extends in the up and down direction, the feeding cylinder 1 takes the first axis as the swing axis and is swingably arranged at a preset position. The swing path of the feeding cylinder 1 is conical, the axis of the top of the feeding cylinder 1 itself intersects with the first axis, and from top to bottom, the swing radius of the feeding cylinder 1 gradually increases; the top of the feeding cylinder 1 is hinged to the receiving box 2; the driving mechanism 3 includes a driving motor 31 arranged in the middle of the receiving box 2, and the driving motor 31 is used to drive the feeding cylinder 1 to rotate around the first axis.

[0038] In the specific working process, driven by the driving mechanism 3, the feeding cylinder 1 hinged to the accommodating box 2 can swing in a conical shape around the first axis. Moreover, from top to bottom, the swing radius of the feeding cylinder 1 gradually increases. Thus, in this embodiment, by setting the structure of the feeding cylinder 1 that can swing around the first axis and has an increasing swing radius, and cooperating with the conical pendulum motion generated by the driving motor 31, the material can be affected by both gravity and centrifugal force, thereby achieving the physical effect of the centrifugal force gradient distribution of the material. And, this embodiment can utilize the swing of the feeding cylinder 1 to increase the flow rate of the alloy powder in the feeding cylinder 1, prevent the alloy powder from accumulating in the feeding cylinder 1, and effectively solve the technical problem of material accumulation in the cylinder. At the same time, the design of the swing radius gradient enables different particle size powders to obtain differential accelerations. The alloy powder in the feeding cylinder 1 constantly collides during the feeding process, which can prevent material bridging and caking in the cylinder and also form a self-cleaning effect, keeping the inner wall of the feeding cylinder 1 smooth and clean.

[0039] Based on the above embodiment, a possible implementation is proposed. To realize the connection between the feeding cylinder 1 and the accommodating box 2, the accommodating box 2 includes a box body 21 and a connection component 4 provided at the top of the box body 21. The connection component 4 includes a first fixed shaft 41, a first fixed ring 42, a second fixed shaft 43, and a second fixed ring 44. The axis of the first fixed shaft 41 extends along the diameter direction of the first fixed ring 42, and there are two first fixed shafts 41. The two ends in the diameter direction of the first fixed ring 42 are respectively swingably connected to the top of the box body 21 through the two first fixed shafts 41. The axis of the second fixed shaft 43 extends along the diameter direction of the second fixed ring 44, and there are two second fixed shafts 43. The two ends in the diameter direction of the second fixed ring 44 are respectively swingably connected to the inner side of the second fixed ring 44 through the two second fixed shafts 43. The axes of the first fixed shaft 41 and the second fixed shaft 43 are perpendicular and intersect. The second fixed ring 44 is coaxially sleeved on the top of the feeding cylinder 1. With the above settings, the first fixed shaft 41 and the second fixed shaft 43 in this embodiment can form a cross universal joint, realizing a composite swing trajectory in three-dimensional space. This connection component 4 can ensure the connection strength between the feeding cylinder 1 and the accommodating box 2 while providing sufficient displacement redundancy for the swing of the feeding cylinder 1, preventing the connection stress between the two from being too concentrated. And, the design of the orthogonal axis system in this embodiment can control the swing angle deviation within ±0.2°, effectively ensuring the connection flexibility and reliability between the feeding cylinder 1 and the accommodating box 2.

[0040] Based on the above embodiments, there is a more preferred implementation manner. The number of the feeding cylinders 1 is multiple, and the swing axes of the feeding cylinders 1 are all parallel to the up-down direction, so as to improve the feeding speed of alloy material distribution through the mutual cooperation of the parallel structure of the multiple feeding cylinders 1. Moreover, the swing axes are arranged in parallel to form a cooperative vibration field, and the rotation directions of any two swing axes arranged diagonally are opposite, so as to prevent phenomena such as mutual interference caused by the common rotation of the traditional multi-cylinder system.

[0041] Based on the above embodiments, a possible implementation manner is proposed. Specifically, in order to drive the rotation of the feeding cylinder 1, the driving mechanism 3 further includes a first gear, a second gear and a connecting rod. The first gear is sleeved on the power output shaft of the driving motor 31, the second gear meshes with the first gear, the axis of the second gear is collinear with the first axis, the length direction of the connecting rod is perpendicular to the axis of the feeding cylinder 1, one end of the connecting rod is fixedly connected to the second gear, and the other end is sleeved on the outer periphery of the feeding cylinder 1 and is rotationally adapted to the outer periphery of the feeding cylinder 1. In specific implementation, driven by the output shaft of the driving motor 31, the first gear drives the second gear to rotate, the second gear drives the connecting rod to rotate around the first axis, and the feeding cylinder 1 rotationally connected to the connecting rod is driven to swing around the first axis. Preferably, each of the feeding cylinders 1 in the above text is driven by a single driving motor 31, there are multiple second gears arranged corresponding to the upper and lower positions of each feeding cylinder 1, and the connecting rods are also provided in multiple corresponding to each feeding cylinder 1. Thus, this embodiment can accurately control the swing speed of the feeding cylinder 1 by using the meshing transmission between the gears, so as to control the feeding speed of the alloy powder in the feeding cylinder 1 by indirectly controlling the centrifugal force of the feeding cylinder 1.

[0042] Based on the above embodiments, a possible implementation manner is proposed. A rubber partition is provided in the receiving box 2, the edge of the rubber partition is hermetically connected to the inner wall of the receiving box 2, and the first gear, the second gear, the connecting rod and the driving motor 31 are all located above the rubber partition. By providing a rubber partition with an edge sealing groove, the receiving box 2 is divided into an upper transmission cavity and a lower dust collection cavity. Preferably, the partition adopts a three-layer composite structure: the surface layer is a polyurethane wear-resistant layer (0.5 mm thick), the middle layer is an aramid fiber reinforced layer (1.2 mm thick), and the bottom layer is a chloroprene rubber sealing layer (2 mm thick). This design enables the transmission cavity to maintain an IP54 protection level, and at the same time, the elastic deformation amount of the partition (≤0.3 mm) completely absorbs the swing vibration energy. And it solves the transmission system jamming failure caused by powder intrusion. It should be noted that a sealing wool ring is provided at the notch of the rubber partition to form a seal between the rubber partition and the feeding cylinder 1 while the feeding cylinder 1 is rotating.

[0043] Based on the above embodiments, a possible implementation is proposed. When the feeding cylinder 1 performs a conical pendulum, the maximum swing angle ≤ 15°. By limiting the maximum swing angle to 15° (preferably 8° - 12°), the ratio of the centrifugal acceleration (a = ω²R) to the gravitational acceleration (g) is controlled within the range of 0.2 - 0.4. The equivalent friction coefficient of the alloy powder particles decreases from 0.6 in the static state to 0.25 in the dynamic state, forming an optimal fluidization state. At the same time, the normal impact force on the cylinder wall is less than the critical value of powder agglomeration, ensuring both the continuity of transportation and avoiding the hardening and caking phenomenon of the powder caused by overload impact.

[0044] Based on the above embodiments, a possible implementation is proposed. A universal interface is provided at the feed inlet of the feeding cylinder 1, and a fixed grille is provided at the top of the receiving box 2. The universal interface is installed on the fixed grille, and the bottom of the universal interface is soft-connected to the top of the feeding cylinder 1. The top of the universal interface is used for feeding. Preferably, a corrugated pipe is provided at the bottom of the universal interface, and the corrugated pipe is used to connect the universal interface and the feeding cylinder 1. Of course, the connection between the bottom of the universal interface and the feeding cylinder 1 can be set in principle to prevent the escape of the divided material, and this will not be elaborated here. With the above settings, in this embodiment, through the modular-designed universal interface, its lower corrugated pipe and upper fixed grille form a combination of static and dynamic seals. And since the swing center of the feeding cylinder 1 is located at the top, the swing amplitude at the top of the feeding cylinder 1 is small. Therefore, the axial expansion amount and radial deflection amount of the corrugated pipe completely cover the swing range of the feeding cylinder 1, and the fixed grille realizes the parallel installation of multiple interfaces through quick-release buckles. This design enables a single worker to complete the docking of the interfaces in a short time, solving the double problems of long downtime and poor sealing reliability caused by frequent material change.

[0045] Based on the above embodiments, in a more preferred implementation, the receiving box 2 further includes a bracket 22, which is integrally connected with a bottom leg and a top reinforcing rib from bottom to top in sequence. Both the top reinforcing rib and the bottom leg extend in the vertical direction. The top reinforcing rib is provided on the outer periphery of the box body 21, and the bottom leg is used to support the box body 21. Furthermore, in this embodiment, the bracket 22 can enhance the structural strength of the receiving box 2 while also enabling the box body 21 to be away from the ground through the bottom leg, improving the load-bearing capacity of the receiving box 2.

[0046] In summary, compared with the prior art, the axis of the present invention can enable the material to be affected by both gravity and centrifugal force through the conical pendulum motion of the feeding cylinder 1, thereby achieving the physical effect of the centrifugal force gradient distribution of the material; and the present invention can improve the flow velocity of the alloy powder in the feeding cylinder 1 by the swing of the feeding cylinder 1, prevent the alloy powder from accumulating in the feeding cylinder 1, and effectively solve the technical problem of material accumulation in the cylinder. At the same time, the swing radius gradient design enables different particle size powders to obtain differential accelerations, and the alloy powder in the feeding cylinder 1 continuously collides during the feeding process, which can prevent material bridging and caking in the barrel while also forming a self-cleaning effect. Moreover, the present invention improves the feeding speed of the alloy powder by the mutual cooperation of the parallel structures of multiple feeding cylinders 1. When each feeding cylinder 1 swings, the swing axes are arranged in parallel to form a cooperative vibration field, and the rotation directions of any two swing axes arranged diagonally are opposite to prevent phenomena such as mutual interference caused by the common rotation of the traditional multi-cylinder system. In addition, the rubber partition in the present invention divides the accommodation box 2 into an upper transmission cavity and a lower dust collection cavity to prevent the dust from the discharge of the feeding cylinder 1 from polluting the structure above the rubber partition.

[0047] Based on the same inventive concept, the present invention also provides an alloy powder production line, which includes the alloy powder feeding device described above.

[0048] Compared with the prior art, the alloy powder production line of the present invention has all the beneficial effects of the above alloy powder feeding device, which will not be repeated here. In addition, the present invention integrates the alloy powder feeding device into the alloy powder production line, and can achieve the closed-loop regulation of the swing frequency and the feeding rate by cooperating with the PLC control system. When the laser particle size analyzer detects a change in the powder value, the system can automatically adjust the rotation speed of the drive motor 31 to make the centrifugal force field precisely adapt to the change in the powder fluidity. By the linkage control of the above structure, the production capacity volatility of the production line can be reduced, and at the same time, the technical problem of high unit energy consumption caused by the blockage of the vacuum feeding in the existing technology can be improved, and it is beneficial to solve the technical problems of high sintering defect rate and low final product qualification rate caused by unstable feeding in the traditional production line.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An alloy powder feeding device, characterized in that, Including: A feeding cylinder (1), the top of the feeding cylinder (1) is a feeding port, the bottom is communicated with a feeding pipeline, the axis of the feeding cylinder (1) extends in the vertical direction, the feeding cylinder (1) is swingably arranged at a preset position with a first axis as a swing axis, the swing path of the feeding cylinder (1) is conical, the axis of the top of the feeding cylinder (1) itself intersects with the first axis, and from top to bottom, the swing radius of the feeding cylinder (1) gradually increases; A receiving box (2), the top of the feeding cylinder (1) is hinged to the receiving box (2); A driving mechanism (3), including a driving motor (31) arranged in the middle of the receiving box (2), the driving motor (31) is used to drive the feeding cylinder (1) to rotate around the first axis.

2. The alloy powder feeding device according to claim 1, wherein, The receiving box (2) includes a box body (21) and a connecting component (4) arranged on the top of the box body (21), the connecting component (4) includes a first fixed shaft (41), a first fixed ring (42), a second fixed shaft (43) and a second fixed ring (44), the axis of the first fixed shaft (41) extends along the diameter direction of the first fixed ring (42), and there are two first fixed shafts (41), both ends in the diameter direction of the first fixed ring (42) are swingably connected to the top of the box body (21) through the two first fixed shafts (41), the axis of the second fixed shaft (43) extends along the diameter direction of the second fixed ring (44), and there are two second fixed shafts (43), both ends in the diameter direction of the second fixed ring (44) are swingably connected to the inner side of the second fixed ring (44) through the two second fixed shafts (43), the axis of the first fixed shaft (41) and the axis of the second fixed shaft (43) are perpendicular and intersect, and the second fixed ring (44) is coaxially sleeved on the top of the feeding cylinder (1).

3. The alloy powder feeding device according to claim 2, characterized in that, The number of the feeding cylinders (1) is multiple, and the swing axes of the feeding cylinders (1) are all parallel to the vertical direction.

4. The alloy powder feeding device according to claim 1, wherein, The driving mechanism (3) further includes a first gear, a second gear and a connecting rod, the first gear is sleeved on the power output shaft of the driving motor (31), the second gear meshes with the first gear, the axis of the second gear is collinear with the first axis, the length direction of the connecting rod is perpendicular to the axis of the feeding cylinder (1), one end of the connecting rod is fixedly connected to the second gear, and the other end is sleeved on the outer periphery of the feeding cylinder (1) and is rotationally adapted to the outer periphery of the feeding cylinder (1).

5. The alloy powder feeding device according to claim 4, characterized in that, A rubber partition is arranged in the receiving box (2), the edge of the rubber partition is hermetically connected to the inner wall of the receiving box (2), and the first gear, the second gear, the connecting rod and the driving motor (31) are all located above the rubber partition.

6. The alloy powder feeding device according to claim 1, characterized in that The maximum swing angle when the feeding cylinder (1) performs a conical pendulum ≤ 15°.

7. The alloy powder feeding device according to claim 1, characterized in that, A universal interface is provided at the feed inlet of the feeding cylinder (1). A fixed grille is provided at the top of the accommodating box (2). The universal interface is installed on the fixed grille. The bottom of the universal interface is flexibly connected to the top of the feeding cylinder (1). The top of the universal interface is used for feeding.

8. The alloy powder feeding device according to claim 7, wherein, A corrugated pipe is provided at the bottom of the universal interface. The corrugated pipe is used to connect the universal interface and the feeding cylinder (1).

9. The alloy powder feeding device according to claim 2, wherein, The accommodating box (2) further includes a bracket (22). The bracket (22) includes a bottom leg and a top reinforcing rib that are integrally connected in sequence from bottom to top. Both the top reinforcing rib and the bottom leg extend in the vertical direction. The top reinforcing rib is provided on the outer periphery of the box body (21). The bottom leg is used to support the box body (21).

10. An alloy powder production line, characterized in that, It includes the alloy powder feeding device according to any one of claims 1 to 9.

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