A powder making system for magnesium-based alloy powder processing

Abstract

The present invention relates to the technical field of metal powder preparation, and discloses a pulverizing system for processing magnesium-based alloy powder, comprising a first base, on which a crushing kettle, a kettle cover, and a first cylinder are provided, the kettle cover being slidably connected to the crushing kettle, and the piston rod of the first cylinder being connected to the kettle cover; a milling mechanism is provided in the crushing kettle, the milling mechanism comprising a tool assembly, a drive assembly, and a guide assembly, the tool assembly comprising three mounting seats provided in the kettle cover, the three mounting seats being distributed in an equilateral triangle, and the three mounting seats being respectively provided with a roughing cutter, a transition cutter, and a finishing cutter for milling and pulverizing magnesium-based alloy blocks. The pulverizing system for processing magnesium-based alloy powder integrates multi-stage processing by providing three tools with different uses, so that the three tools are cyclically alternated to achieve continuous control of crushing, shaping, and grading at the same workstation, thereby maximally taking into account both the particle size grading and morphological control of the magnesium-based alloy powder.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder preparation, in particular to a powder making system for processing magnesium-based alloy powder. Background Art

[0002] Magnesium alloy structures can be manufactured using casting methods such as gravity casting or die casting, plastic working methods such as hot extrusion, cold extrusion, rolling, and forging of billets, or powder metallurgy methods using hot pressing or hot extrusion of powders. Magnesium alloy powders can be manufactured by milling magnesium alloy blocks to obtain coarse-grained magnesium alloys that can then be further refined.

[0003] In the metal powder production process, particle size classification and morphology control are two key quality indicators. Particle size refers to the size distribution of powder particles, typically measured in mesh sizes such as 40 mesh and 80 mesh. Morphology control, on the other hand, involves the shape of the particles, such as sphericity and surface smoothness. Mechanical milling methods struggle to achieve both. While milling cutters can control particle size, they can easily result in irregular particle shapes and rough surfaces.

[0004] Therefore, in order to solve the above technical problems existing in the prior art, a powder making system for processing magnesium-based alloy powder is proposed. Summary of the Invention

[0005] The present invention provides a powder making system for processing magnesium-based alloy powder, which has the function of integrating multi-stage processing by setting three tools with different purposes, so that the three tools are cyclically alternated to achieve continuous control of crushing → shaping → grading at the same workstation, which can maximize the beneficial effects of particle size grading and morphology control of magnesium-based alloy powder, and solves the problem mentioned in the above background technology that particle size grading and morphology control are difficult to be taken into account in the mechanical milling method during the metal powder making process. Although the milling cutter can control the particle size, it is easy to cause irregular particle shape and rough surface.

[0006] The present invention provides the following technical solution: a pulverizing system for processing magnesium-based alloy powder, comprising a first base, on which a crushing kettle, a kettle cover, and a first cylinder are provided, wherein a piston rod of the first cylinder is connected to the kettle cover, and the kettle cover is controlled by the first cylinder to slide upward along the first base to open the inner cavity of the crushing kettle;

[0007] A milling mechanism is provided in the crushing kettle, and the milling mechanism includes a tool assembly, a drive assembly and a guide assembly. The tool assembly includes three mounting seats provided in the kettle cover, and the three mounting seats are distributed in an equilateral triangle. A rough milling cutter, a transition cutter and a fine milling cutter are respectively provided in the three mounting seats for milling and powdering the magnesium-based alloy block.

[0008] The driving assembly and the guiding assembly are used to control the alternating positions of the roughing cutter, the transition cutter and the finishing cutter.

[0009] As an optional solution of the pulverizing system for processing magnesium-based alloy powder according to the present invention, the crushing kettle is provided with a leakage groove, a partition is slidably provided in the crushing kettle, a second cylinder is provided in the crushing kettle, a piston rod of the second cylinder is connected to the partition, and a vacuum pump and a nitrogen pump are provided in the kettle cover;

[0010] A first motor is provided in each of the three mounting seats, and the output shafts of the three first motors are respectively connected to the rough milling cutter, the transition cutter and the fine milling cutter.

[0011] As an optional solution of the powder making system for processing magnesium-based alloy powder of the present invention, wherein: the guide assembly comprises a disc arranged in the kettle cover, and the disc is provided with a guide groove;

[0012] The roughing cutter, the transition cutter and the finishing cutter are all provided with sliding rods, the three sliding rods are all provided with guide rods, and the three guide rods are all slidably connected in the guide grooves.

[0013] As an optional solution of the powder making system for processing magnesium-based alloy powder described in the present invention, the guide groove includes a first arc-shaped guide segment, a second arc-shaped guide segment, a third arc-shaped guide segment and a fourth arc-shaped guide segment connected in sequence, and the three sliding rods all move cyclically along the trajectory of "→first arc-shaped guide segment→second arc-shaped guide segment→third arc-shaped guide segment→fourth arc-shaped guide segment→".

[0014] As an optional solution of the powder making system for processing magnesium-based alloy powder of the present invention, a limiting assembly is provided at the junction of the first arc-shaped guide segment and the fourth arc-shaped guide segment, and at the junction of the second arc-shaped guide segment and the third arc-shaped guide segment;

[0015] The limiting assembly includes a support seat provided on the disc, a rotating rod rotatably provided on the support seat, a limiting plate provided on the rotating rod, and the limiting plate slidably connected to the guide groove;

[0016] The rotating rod is elastically connected to the supporting seat through a torsion spring. A baffle is provided on the rotating rod, and a baffle groove is provided on the supporting seat.

[0017] As an optional solution of the pulverizing system for processing magnesium-based alloy powder according to the present invention, the driving assembly includes a fixed seat arranged in the kettle cover, three first pulleys are rotatably arranged on the fixed seat, and the three first pulleys are respectively connected to the three guide rods through three connecting assemblies;

[0018] Three second motors are arranged on the outside of the fixing seat, and second pulleys are arranged on the output shafts of the three second motors. The three second pulleys are respectively connected to the three first pulleys through three transmission belts.

[0019] As an optional solution of the powder making system for processing magnesium-based alloy powder described in the present invention, the connecting assembly includes a first connecting rod arranged on the first pulley, a second connecting rod is slidingly arranged on the first connecting rod, a slide groove is provided on the second connecting rod, the guide rod is slidably connected in the slide groove, and a collector ring is provided on the three first pulleys.

[0020] As an optional solution of the powder making system for processing magnesium-based alloy powder described in the present invention, it also includes a second base, and the milling mechanism is provided with a first belt conveyor and a biaxial movable machine tool, the first belt conveyor is used to convey the magnesium-based alloy block, and the biaxial movable machine tool is used to transfer the magnesium-based alloy block to the crushing kettle.

[0021] As an optional solution of the powder making system for processing magnesium-based alloy powder described in the present invention, the dual-axis movable machine tool includes a base arranged on the milling mechanism, a first slide rail and a first screw drive device are provided on the base, a first slide is provided on the first slide, a second slide rail and a second screw drive device are provided on the first slide, a second slide is slidably provided on the second slide, a vacuum suction cup is provided on the second slide, and a third cylinder is provided on the second base.

[0022] As an optional solution of the powder making system for processing magnesium-based alloy powder described in the present invention, it also includes a second belt conveyor and a refiner, one end of the second belt conveyor is aligned with the lower opening of the leakage trough, and the other end of the second belt conveyor is aligned with the feed port of the refiner.

[0023] The present invention has the following beneficial effects:

[0024] 1. This pulverizing system for magnesium-based alloy powder processing integrates tools from different processing stages, working together to achieve particle size classification and morphology control. A coarse milling cutter is responsible for the initial crushing of bulk materials, a transition cutter performs intermediate refinement, and a fine milling cutter further refines and shapes the particles, ensuring that the particle size is within the target range. For morphology control, a ball-end milling cutter is selected as the fine milling cutter to facilitate sphericalization of the particles. The ball-end milling cutter compacts and polishes the particles during rotation, reducing angularity and improving sphericity. By integrating the traditional crushing, screening, and spheroidization processes into a single station, the equipment footprint is reduced and processing time is shortened.

[0025] 2. This magnesium-based alloy powder production system features three cutting tools that alternate along a curved "∞" trajectory within a single plane, enabling all possible permutations of the three tools in three directions. During this alternating process, the roughing cutter crushes the metal billet with a high feed rate, forming 40-mesh coarse particles. The transition cutter pre-crushes and guides the magnesium-based alloy powder, reducing the accumulation of coarse powder. The finishing cutter refines the particle surface, increasing the sphericity to over 90%.

[0026] 3. The magnesium alloy powder processing system has a high degree of automation, requiring only manual loading and unloading, all of which are controlled by PLC. Nitrogen protection is used throughout the process to ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0028] Figure 2 This is a schematic diagram of the first cross-sectional structure of the crushing kettle in the present invention.

[0029] Figure 3 This is a second cross-sectional structural schematic diagram of the crushing kettle in the present invention.

[0030] Figure 4 For the present invention Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the disc in the present invention.

[0032] Figure 6 It is a schematic diagram of the exploded structure of the dual-axis movable machine tool in the present invention.

[0033] Figure 7 It is a schematic diagram of the exploded structure of the milling mechanism in the present invention.

[0034] Figure 8 Schematic diagram of the exploded structure of the tool assembly in the present invention.

[0035] Figure 9 Schematic diagram of the exploded structure of the drive assembly in the present invention.

[0036] Figure 10 It is a schematic diagram of the exploded structure of the guide assembly in the present invention.

[0037] Figure 11 It is a schematic diagram of the working principle of the present invention.

[0038] In the figure: 100, first base; 110, crushing kettle; 120, kettle cover; 130, first cylinder; 140, drain trough; 150, partition; 160, second cylinder; 170, vacuum pump; 180, nitrogen pump; 200, milling mechanism; 210, tool assembly; 212, mounting base; 213, roughing cutter; 214, transition cutter; 215, finishing cutter; 216, first motor; 220, drive assembly; 221 , fixed seat; 222, first pulley; 223, connecting assembly; 2231, first connecting rod; 2232, second connecting rod; 2233, slideway; 224, second motor; 225, second pulley; 226, transmission belt; 227, slip ring; 230, guide assembly; 231, disc; 232, guide groove; R1, first arc-shaped guide segment; R2, second arc-shaped guide segment; R3, third arc-shaped guide segment; R4, fourth arc-shaped guide segment; 233, slide bar; 234, guide bar; 235, limit assembly; 2351, support base; 2352, rotating bar; 2353, limit plate; 2354, torsion spring; 2355, baffle; 2356, retaining groove; 300, first belt conveyor; 400, dual-axis mobile machine tool; 410, base; 420, first slide rail; 430, first slide seat; 440, first screw drive device ; 441, first screw rod; 442, first nut; 443, third motor; 444, first belt transmission device; 450, second slide rail; 460, second slide; 470, second screw rod drive device; 471, fourth motor; 472, second screw rod; 473, second nut; 480, vacuum suction cup; 490, third cylinder; 500, second belt conveyor; 600, refiner; 700, second base. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] For example 1, please refer to Figures 1-8 A powder making system for processing magnesium-based alloy powder includes a first base 100, on which a crushing pot 110, a pot cover 120 and a first cylinder 130 are provided. The piston rod of the first cylinder 130 is connected to the pot cover 120. The first cylinder 130 controls the pot cover 120 to slide and rise along the first base 100 to open the inner cavity of the crushing pot 110.

[0041] A milling mechanism 200 is provided in the crushing kettle 110, and the milling mechanism 200 includes a tool assembly 210, a drive assembly 220 and a guide assembly 230. The tool assembly 210 includes three mounting seats 212 arranged in the kettle cover 120. The three mounting seats 212 are distributed in an equilateral triangle. The three mounting seats 212 are respectively provided with a rough milling cutter 213, a transition cutter 214 and a fine milling cutter 215 for milling and powdering the magnesium-based alloy block.

[0042] The driving assembly 220 and the guiding assembly 230 are used to control the alternating positions of the roughing cutter 213 , the transition cutter 214 and the finishing cutter 215 .

[0043] A leakage groove 140 is opened on the crushing kettle 110, a partition 150 is slidably set in the crushing kettle 110, a second cylinder 160 is set in the crushing kettle 110, and the piston rod of the second cylinder 160 is connected to the partition 150. A vacuum pump 170 and a nitrogen pump 180 are set in the kettle cover 120.

[0044] A first motor 216 is disposed in each of the three mounting seats 212 , and the output shafts of the three first motors 216 are connected to the roughing cutter 213 , the transition cutter 214 , and the finishing cutter 215 , respectively.

[0045] In this embodiment, the first pneumatic cylinder 130 controls the lid 120 to slide upward along the first base 100, thereby opening the interior of the crushing vessel 110. After the magnesium-based alloy block is placed into the crushing vessel 110, the lid 120 is controlled by the first cylinder 130 to descend, sealing the interior of the crushing vessel 110. A pneumatic rotary hook pressure plate can be installed between the crushing vessel 110 and the lid 120 to compress the lid 120 and achieve a sealed state. Once sealed, the vacuum pump 170 is activated to evacuate the interior of the crushing vessel 110. The nitrogen pump 180 is then activated to pump nitrogen into the crushing vessel 110 as a protective gas.

[0046] When milling and pulverizing begins, the rough milling cutter 213, transition cutter 214, and fine milling cutter 215 distributed in the inner cavity of the crushing kettle 110 play different roles respectively. A staggered corn milling cutter can be selected as the rough milling cutter 213 to complete the large feed rate crushing of the metal billet to form 40 mesh coarse particles. The conical serrated cutter is used as the transition cutter 214 to pre-crush and guide the magnesium-based alloy powder, reducing the probability of coarse powder accumulation. The ball-end milling cutter is used as the fine milling cutter 215 to refine the particle surface and improve the sphericity to more than 90%. The input position of the magnesium-based alloy block can be controlled to first contact the rough milling cutter 213, and then the rough milling cutter 213, transition cutter 214, and fine milling cutter 215 are driven by the drive assembly 220 to alternate positions to avoid local accumulation of powder of a certain particle size and further improve the uniformity of the particle size.

[0047] Example 2: This example is an improvement based on Example 1. For details, please refer to Figure 2-Figure 11The guide assembly 230 includes a disc 231 disposed in the kettle cover 120 , and a guide groove 232 is formed on the disc 231 .

[0048] The roughing cutter 213 , the transition cutter 214 and the finishing cutter 215 are each provided with a sliding rod 233 , and each of the three sliding rods 233 is provided with a guide rod 234 . The three guide rods 234 are all slidably connected in the guide groove 232 .

[0049] The guide groove 232 includes a first arc-shaped guide segment R1, a second arc-shaped guide segment R2, a third arc-shaped guide segment R3 and a fourth arc-shaped guide segment R4 which are connected in sequence. The three sliding rods 233 all move cyclically along the trajectory of “→first arc-shaped guide segment R1→second arc-shaped guide segment R2→third arc-shaped guide segment R3→fourth arc-shaped guide segment R4→”.

[0050] A limiting assembly 235 is provided at the junction of the first arc-shaped guide segment R1 and the fourth arc-shaped guide segment R4 and at the junction of the second arc-shaped guide segment R2 and the third arc-shaped guide segment R3.

[0051] The limiting assembly 235 includes a support base 2351 disposed on the disc 231 . A rotating rod 2352 is rotatably disposed on the support base 2351 . A limiting plate 2353 is disposed on the rotating rod 2352 . The limiting plate 2353 is slidably connected to the guide groove 232 .

[0052] The rotating rod 2352 is elastically connected to the support base 2351 via a torsion spring 2354 . A baffle 2355 is provided on the rotating rod 2352 , and a baffle groove 2356 is provided on the support base 2351 .

[0053] The driving assembly 220 includes a fixing seat 221 disposed in the kettle cover 120 . Three first pulleys 222 are rotatably disposed on the fixing seat 221 . The three first pulleys 222 are respectively connected to three guide rods 234 through three connecting assemblies 223 .

[0054] Three second motors 224 are provided outside the fixing seat 221 . Second pulleys 225 are provided on the output shafts of the three second motors 224 . The three second pulleys 225 are respectively connected to the three first pulleys 222 through three transmission belts 226 .

[0055] The connecting assembly 223 includes a first connecting rod 2231 arranged on the first pulley 222, a second connecting rod 2232 is slidably arranged on the first connecting rod 2231, a slide groove 2233 is opened on the second connecting rod 2232, a guide rod 234 is slidably connected in the slide groove 2233, and a collector ring 227 is provided on the three first pulleys 222.

[0056] This embodiment improves upon the traditional stepped composite tool. The three tools do not simply rotate in a single plane. This allows powder trapped between two tools to have only a small probability of contact with the third tool. Therefore, the three tools are arranged in six different combinations in three directions.

[0057] like Figure 11 As shown, the first, second, third, and fourth curved guide segments R1, R2, R3, and R4 form an "∞" shape that twists downward from the center. The upper intersection of the first and fourth curved guide segments R1 and R4 is labeled I, the upper intersection of the second and third curved guide segments R2 and R3 is labeled III, and the lower common intersection of the first, second, third, and fourth curved guide segments R1, R2, R3, and R4 is labeled II. The points where the roughing cutter 213, transition cutter 214, and finishing cutter 215 are projected into the guide groove 232 are labeled a, b, and c, respectively.

[0058] Drive in the following order: in the initial state, points a, b, and c coincide with I, II, and III respectively, and the two driving components 220 corresponding to a and b operate simultaneously to drive the two first pulleys 222 to rotate clockwise, thereby driving a to move along the first arc-shaped guide segment R1 to point II, and b to move along the fourth arc-shaped guide segment R4 to point I.

[0059] Then, the two driving assemblies 220 corresponding to a and c are driven to move a to point III along the third arc-shaped guide segment R3, and c to move to point II along the second arc-shaped guide segment R2.

[0060] Then, the two driving assemblies 220 corresponding to b and c are driven to move b to point II along the first arc-shaped guide segment R1, and c to move to point I along the fourth arc-shaped guide segment R4.

[0061] The two driving assemblies 220 corresponding to a and b are driven to move a to point II along the second arc-shaped guide segment R2, and b to move to point III along the third arc-shaped guide segment R3 by running simultaneously.

[0062] The two driving assemblies 220 corresponding to a and c are driven to move a to point I along the fourth arc-shaped guide segment R4, and c to move to point II along the first arc-shaped guide segment R1.

[0063] By operating the two driving components 220 corresponding to b and c simultaneously, b is driven to move to point II along the second arc guide segment R2, and c is driven to move to point III along the third arc guide segment R3. Points a, b, and c are re-aligned with points I, II, and III and return to the initial state.

[0064] Taking the roughing cutter 213 at point a as an example, the operation of the second motor 224 drives the second pulley 225 to rotate clockwise, which in turn drives the first pulley 222 clockwise via the transmission belt 226. A first connecting rod 2231 connected to the inner wall of the first pulley 222 is located along the radius of the crushing vessel 110. The second connecting rod 2232 and the first connecting rod 2231 form a telescopic rod. The second connecting rod 2232 is T-shaped, and the chute 2233 is perpendicular to the first connecting rod 2231.

[0065] When the roughing cutter 213 moves from I to II along the first arc-shaped guide segment R1 , the first pulley 222 rotates 30° clockwise. During this process, the sliding rod 233 slides in the sliding groove 2233 .

[0066] When the roughing cutter 213 moves from II to III along the third arc-shaped guide segment R3 , the first pulley 222 rotates 30° clockwise. During this process, the guide rod 234 slides relatively in the first sliding groove 2233 .

[0067] When the roughing cutter 213 moves from III to II along the second arc-shaped guide section R2, and when the roughing cutter 213 moves from II to I along the fourth arc-shaped guide section R4, the first pulley 222 rotates 60° clockwise. During this process, the guide rod 234 is relatively located in the middle of the first slide groove 2233.

[0068] The three first motors 216 are used to respectively drive the roughing cutter 213, the transition cutter 214, and the finishing cutter 215 to rotate and perform milling. The circuit wiring of the three first motors 216 extends through the guide rod 234 to the first connecting rod 2231, and then to the fixed base 221 to connect to the slip ring 227. The slip ring 227 is then connected to the power supply module. This ensures that the roughing cutter 213, the transition cutter 214, and the finishing cutter 215 remain powered after cyclic movement.

[0069] In addition, it is necessary to set a limiting component 235 at the intersection of the first arc-shaped guide segment R1 and the fourth arc-shaped guide segment R4 and the second arc-shaped guide segment R2 and the third arc-shaped guide segment R3.

[0070] When the slide bar 233 moves clockwise along the first curved guide segment R1 from point I to point II, and then along the third curved guide segment R3 from point II to point III, the right-side limit plate 2353 is prevented from rotating leftward by the baffle 2355 fixed to the rotating rod 2352, which is positioned on the right side of the support seat 2351. Therefore, the baffle 2355 cannot rotate counterclockwise within the second curved guide segment R2 under the drive of the rotating rod 2352, but can only rotate clockwise. At this point, the slide bar 233 can only move from point II to point III along the third curved guide segment R3. However, when the slide bar 233 moves from point III to point II along the second curved guide segment R2, it is unaffected and can push the limit plate 2353 aside to pass through.

[0071] The left limiting assembly 235 and the right limiting assembly 235 are mirror-symmetrical along the central axis of the disk 231 , so when the sliding rod 233 moves clockwise along the fourth arc-shaped guide segment R4 , it can only move from point III to point I.

[0072] Example 3: This example is an improvement based on Example 1. For details, please refer to Figures 1-6 , and also includes a second base 700, on which a first belt conveyor 300 and a biaxial movable machine tool 400 are provided. The first belt conveyor 300 is used to convey the magnesium-based alloy blocks, and the biaxial movable machine tool 400 is used to transfer the magnesium-based alloy blocks to the crushing kettle 110.

[0073] The dual-axis mobile machine tool 400 includes a base 410 arranged on the milling mechanism 200, a first slide rail 420 and a first screw drive device 440 are arranged on the base 410, a first slide 430 is arranged on the first slide rail 420, a second slide rail 450 and a second screw drive device 470 are arranged on the first slide 430, a second slide rail 450 is slidingly arranged on the second slide rail 450, a vacuum suction cup 480 is arranged on the second slide 460, and a third cylinder 490 is arranged on the second base 700.

[0074] The first screw drive device 440 includes a first screw 441 rotatably set on the base 410, a first nut 442 is threadedly connected to the first screw 441, the first nut 442 is connected to the first slide 430, and a third motor 443 is provided on the base 410. The output shaft of the third motor 443 is connected to the first screw 441 through a first belt transmission device 444.

[0075] The second screw drive device 470 includes a second screw 472 rotatably arranged on the first slide 430, a fourth motor 471 is arranged on the first slide 430, the output shaft of the fourth motor 471 is connected to the second screw 472, a second nut 473 is threadedly connected to the second screw 472, and the second nut 473 is connected to the second slide 460.

[0076] It also includes a second belt conveyor 500 and a refiner 600. One end of the second belt conveyor 500 is aligned with the lower opening of the drain trough 140, and the other end of the second belt conveyor 500 is aligned with the feed port of the refiner 600.

[0077] In this embodiment, the entire processing flow is automated. First, a large number of magnesium-based alloy ingots are conveyed from back to front via the first belt conveyor 300. A vacuum suction cup 480 is controlled by a first screw drive 440 in forward and backward motion, while a second screw drive 470 in vertical motion. The magnesium-based alloy ingots on the first belt conveyor 300 are gradually transferred to the second base 700 for placement. The piston rod of the third cylinder 490 then drives the push plate mounted thereon to move leftward, pushing the magnesium-based alloy ingots on the second base 700 to the left into the opened crushing vessel 110.

[0078] Specifically, the third motor 443, driven by the first belt drive 444, rotates the first screw 441. The first screw 441 then moves the first nut 442 and the first slide 430 forward or backward, depending on the direction of rotation. The fourth motor 471 rotates the second screw 472, which in turn moves the second nut 473, the second slide 460, and the vacuum suction cup 480 upward or downward, depending on the direction of rotation. The vacuum suction cup 480 can be connected to another vacuum pump to generate suction to hold the magnesium-based alloy block, and release the suction to lower the magnesium-based alloy block.

[0079] After the powder in the crushing vessel 110 is milled, the second air cylinder 160 is controlled to open the partition 150, allowing the powder to flow through the trough 140 and onto the second belt conveyor 500. The second belt conveyor 500 then transfers the powder to the refiner 600 for further refinement. Refiner 600 is a conventional technology, and its specific structure and principle will not be described in detail. Refiner 600 may be a combination of a first-stage Venturi accelerator tube for gas kinetic energy enhancement, a second-stage cyclonic collision chamber for powder self-collision refinement, and a third-stage 80-mesh screen vibrating separator for grading.

[0080] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A powder making system for processing magnesium-based alloy powder, comprising a first base, characterized in that: A crushing kettle, a kettle cover and a first cylinder are provided on the first base. The piston rod of the first cylinder is connected to the kettle cover. The kettle cover is controlled by the first cylinder to slide up along the first base to open the inner cavity of the crushing kettle. A milling mechanism is provided in the crushing kettle, which includes a tool assembly, a drive assembly and a guide assembly. The tool assembly includes three mounting seats provided in the kettle cover. The three mounting seats are distributed in an equilateral triangle. The three mounting seats are respectively provided with a rough milling cutter, a transition cutter and a fine milling cutter for milling and powdering the magnesium-based alloy block. The drive assembly and guide assembly are used to control the alternating positions of the roughing cutter, transition cutter and finishing cutter; The guide assembly includes a disc arranged in the kettle cover, and a guide groove is provided on the disc; The roughing cutter, transition cutter and finishing cutter are all provided with sliding rods, and the three sliding rods are all provided with guide rods, and the three guide rods are all slidably connected in the guide groove; The guide groove includes a first arc-shaped guide segment, a second arc-shaped guide segment, a third arc-shaped guide segment, and a fourth arc-shaped guide segment connected in sequence. The three slide bars all move cyclically along the trajectory of "→first arc-shaped guide segment→second arc-shaped guide segment→third arc-shaped guide segment→fourth arc-shaped guide segment→"; A limiting component is provided at the junction of the first arc-shaped guide segment and the fourth arc-shaped guide segment, as well as at the junction of the second arc-shaped guide segment and the third arc-shaped guide segment; The limiting assembly includes a support seat arranged on the disc, a rotating rod is rotatably arranged on the support seat, a limiting plate is arranged on the rotating rod, and the limiting plate is slidably connected to the guide groove; The rotating rod is elastically connected to the support seat through a torsion spring, a baffle is provided on the rotating rod, and a baffle groove is provided on the support seat; The driving assembly includes a fixed seat arranged in the kettle cover, and three first pulleys are rotatably arranged on the fixed seat, and the three first pulleys are respectively connected to the three guide rods through three connecting assemblies; Three second motors are arranged outside the fixed seat, and second pulleys are arranged on the output shafts of the three second motors. The three second pulleys are respectively connected to the three first pulleys through three transmission belts; The connecting assembly includes a first connecting rod arranged on the first pulley, a second connecting rod is slidably arranged on the first connecting rod, a sliding groove is opened on the second connecting rod, and the guide rod is slidably connected to the sliding groove. The three first pulleys are all provided with a collector ring.

2. A powder making system for processing magnesium-based alloy powder according to claim 1, characterized in that: A leakage groove is provided on the crushing kettle, a partition is slidingly provided inside the crushing kettle, a second cylinder is provided inside the crushing kettle, a piston rod of the second cylinder is connected to the partition, and a vacuum pump and a nitrogen pump are provided in the kettle cover; A first motor is arranged in each of the three mounting seats, and the output shafts of the three first motors are respectively connected to the rough milling cutter, the transition cutter and the fine milling cutter.

3. The powder making system for magnesium-based alloy powder processing according to claim 1, characterized in that: It also includes a second base, on which a first belt conveyor and a biaxial movable machine tool are provided. The first belt conveyor is used to convey magnesium-based alloy blocks, and the biaxial movable machine tool is used to transfer the magnesium-based alloy blocks to the crushing kettle.

4. A powder making system for processing magnesium-based alloy powder according to claim 3, characterized in that: The dual-axis mobile machine tool includes a base arranged on the milling mechanism, a first slide rail and a first screw drive device are arranged on the base, a first slide is arranged on the first slide rail, a second slide rail and a second screw drive device are arranged on the first slide, a second slide is slidably arranged on the second slide rail, a vacuum suction cup is arranged on the second slide, and a third cylinder is arranged on the second base.

5. A powder making system for processing magnesium-based alloy powder according to claim 2, characterized in that: It also includes a second belt conveyor and a refiner, one end of the second belt conveyor is aligned with the lower opening of the drain trough, and the other end of the second belt conveyor is aligned with the feed port of the refiner.

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