Gas atomization powder making continuous feeding device and powder making method

Abstract

The invention particularly relates to a gas atomization powder making continuous feeding device and a powder making method. The device comprises a feeding chamber and an atomizing chamber, the feeding chamber is provided with a feeding system and a transmission system, the feeding system comprises a horizontal rotating disc and a rotating mechanism, the horizontal rotating disc is provided with a plurality of mounting holes, the mounting holes comprise first holes and second holes which are communicated with each other, and electrodes with chucks at the upper ends penetrate through the mounting holes; the inner diameter of the first hole is matched with the electrode and is smaller than the outer diameter of the clamping head, the inner diameter of the second hole is larger than the outer diameter of the clamping head, the transmission system comprises a rotary feeding mechanism and a clamping mechanism, the rotary feeding mechanism drives the clamping mechanism to conduct rotary feeding, and the clamping mechanism clamps the clamping head. A plurality of mounting holes are formed in the horizontal turntable, the inner diameter of the first hole is smaller than that of the clamping head, the diameter of the clamping head is smaller than that of the second hole, the electrode is located on the horizontal turntable through the clamping head, the clamping mechanism drives the clamping head to penetrate through the second hole to complete melting and atomization of the electrode, and melting and atomization operation of multiple electrodes in a single batch is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder preparation, and in particular to an aerosolized powder making continuous feeding device and a powder making method. Background Art

[0002] Crucible-free electrode induction gas atomization (EIGA) powder-making equipment utilizes the EIGA process (electrode induction melting gas atomization, or EIGA), which holds significant application significance and broad development prospects in the field of metal powder preparation. Because it eliminates the use of refractory materials such as crucibles, the entire powder-making process is pollution-free, making it suitable for producing high-purity, high-performance metal powders. The titanium alloy and high-temperature alloy powders produced exhibit high sphericity, excellent flowability, and uniform particle size distribution, making them widely used in a wide range of fields, including metal additive manufacturing, thermal spray coatings, and powder metallurgy.

[0003] The EIGA's operating principle is to induction heat the electrode tip to melting through a high-frequency induction coil in a vacuum and inert gas atmosphere. The molten droplets, driven by gravity, enter the atomizing spray disc and are impacted and broken by the high-pressure inert gas flow, atomizing into fine droplets. The droplets rapidly cool as they fly through the atomizing chamber, forming metal powder. A drive system controls the continuous advancement of the electrode through the induction coil, completing the melting and atomization process for the entire electrode.

[0004] In existing electrode induction atomization equipment, after atomizing one electrode, the vacuum chamber must be opened to load a new electrode, then evacuated again before atomizing the next electrode. The loading and evacuation process takes up approximately one-quarter to one-third of the total atomization time for a single electrode, significantly limiting the equipment's production efficiency. Furthermore, the repeated loading and evacuation steps increase the operator's workload. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an aerosolized powder making continuous feeding device and a powder making method. Multiple mounting holes are arranged on the horizontal turntable. The inner diameter of the first hole is smaller than the clamping head, and the diameter of the clamping head is smaller than the second hole. The electrode is seated on the horizontal turntable through the clamping head. The clamping mechanism drives the clamping head through the second hole to complete the melting and atomization of the electrode, thereby realizing the melting and atomization operations of multiple electrodes in a single batch.

[0006] In response to the above technical problems, the technical solution provided by the present invention is an aerosol powder making continuous feeding device, comprising a feeding chamber and an atomization chamber, wherein the feeding chamber is arranged at the upper end of the atomization chamber, and a feeding system and a transmission system are provided on the feeding chamber, wherein the feeding system comprises a horizontal turntable and a rotating mechanism for driving the horizontal turntable to rotate, and the horizontal turntable is provided with a plurality of mounting holes in a circular array along its rotation axis, the mounting holes comprising a first hole and a second hole which are interconnected, an electrode is passed through the mounting hole, a clamping head is installed at the upper end of the electrode, the outer diameter of the clamping head is larger than the diameter of the electrode, the inner diameter of the first hole is adapted to the diameter of the electrode and is smaller than the outer diameter of the clamping head, and the inner diameter of the second hole is larger than the outer diameter of the clamping head, and the transmission system comprises a rotary feeding mechanism and a clamping mechanism, the rotary feeding mechanism drives the clamping mechanism to rotate and move along the feeding direction, and the clamping mechanism is used to clamp the clamping head.

[0007] Furthermore, the clamping mechanism includes a transmission shaft, the rotary feeding mechanism includes a rotating mechanism and a lifting mechanism, a lifting platform is rotatably installed on the transmission shaft, the lifting mechanism drives the lifting platform to rise and fall, the rotating mechanism is installed on the lifting platform, and the rotating mechanism drives the transmission shaft to rotate.

[0008] Furthermore, the lifting mechanism includes a mounting frame and a screw-nut mechanism mounted on the mounting frame. The lifting platform is mounted on the mounting frame in a vertical sliding manner, and the screw-nut mechanism drives the lifting platform to move vertically up and down.

[0009] Furthermore, the rotating mechanism includes a rotating motor, a driving gear and a driven gear. The driven gear is fixed on the transmission shaft. The rotating motor drives the driving gear to rotate. The driving gear and the driven gear are meshed and transmitted.

[0010] Furthermore, the transmission shaft includes an outer shaft, an inner shaft and a vertical drive mechanism, the outer shaft is provided with an inner cavity with an opening at the lower end, the inner shaft is coaxially arranged in the inner cavity, and the vertical drive mechanism drives the inner shaft to move vertically relative to the outer shaft, the lower end of the inner shaft is provided with an upward extending clamping countersunk hole, the upper end of the clamping head is provided with a clamping block adapted to the clamping countersunk hole, a plurality of outward extending sliding through holes are provided on the inner wall of the clamping countersunk hole at circumferential intervals, and an adapted clamping ball is provided in the sliding through hole, the circumferential surface of the clamping block is provided with an annular clamping groove corresponding to the clamping ball, and the lower part of the inner cavity of the outer shaft is provided with an accommodating space for accommodating the clamping ball.

[0011] Furthermore, a closing structure is provided on the inner side of the sliding through hole, and the inner diameter of the closing structure is smaller than the diameter of the clamping ball.

[0012] Furthermore, the sliding through hole is an inclined hole with a higher inner side and a lower outer side.

[0013] Furthermore, the accommodating space is an outward flared structure opened at the lower end of the outer shaft, and the horizontal distance between the position where the outward flared structure is tangent to the clamping ball and the inner side of the sliding through hole is not less than the diameter of the clamping ball.

[0014] Furthermore, the rotary feeding mechanism and the rotating mechanism are both arranged at the upper end of the loading chamber, the lower end of the transmission shaft penetrates into the loading chamber, and a dynamic sealing structure is provided between the transmission shaft and the loading chamber.

[0015] In response to the above technical problems, the present invention further provides a technical solution that is an aerosolized powder making method, comprising the following steps:

[0016] Step 1: Install the electrodes on each mounting hole of the horizontal turntable, and make the electrode clamp seat on the first hole;

[0017] Step 2: The rotary feeding mechanism drives the clamping mechanism to move downward, the clamping mechanism clamps the electrode, and the rotating mechanism rotates forward, so that the electrode is inserted into the corresponding second hole. The rotary feeding mechanism drives the clamping mechanism to rotate and feed, and the electrode passes through the second hole and moves toward the high-frequency induction coil. The end of the electrode is heated and melted, and the melted droplets enter the atomizing spray disc and form metal powder in the atomizing chamber;

[0018] Step 3: After an electrode is atomized, the rotary feed mechanism drives the electrode upward until the clamping head is above the corresponding second hole. The rotating mechanism rotates in the opposite direction, the clamping mechanism is released, and the electrode falls into the corresponding first hole. The atomized electrode head is placed back on the horizontal turntable.

[0019] Step 4: The rotating mechanism rotates forward until the next electrode corresponds to the clamping mechanism, and the above steps 2 and 3 are repeated until all electrodes are atomized and replaced with a new batch of electrodes.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) A plurality of mounting holes are provided on the horizontal turntable, and the mounting holes include a first hole and a second hole. The inner diameter of the first hole is adapted to the diameter of the electrode and is smaller than the outer diameter of the chuck. The electrode can be clamped in the first hole through the chuck. The inner diameter of the second hole is larger than the outer diameter of the chuck. After the clamping mechanism clamps the chuck, it can drive the electrode to feed downward for atomization.

[0022] In actual use, the rotating mechanism first rotates forward to drive one of the electrodes on the horizontal turntable to move to the bottom of the clamping mechanism, and the rotating feed mechanism drives the clamping mechanism to move toward the corresponding electrode below. The clamping mechanism clamps the clamping head of the corresponding electrode, and the rotating mechanism is reversed so that the electrode is in the second hole. The rotating feed mechanism drives the electrode on the clamping mechanism to pass through the second hole and rotate downward to feed for atomization. After the atomization of the electrode is completed, the rotating feed mechanism drives the electrode to move upward until the clamping head is above the horizontal turntable, and the rotating mechanism rotates in the opposite direction until the electrode is in the corresponding first hole. The clamping mechanism is released so that the electrode is re-seated on the horizontal turntable, and the horizontal turntable rotates forward by a certain angle so that the second electrode is below the clamping mechanism. The above actions are repeated to continue atomization.

[0023] Multiple electrodes can be arranged in a single batch using a horizontal turntable to achieve continuous feeding. There is no need to open the vacuum chamber and reload new electrodes after each electrode is atomized, which improves production efficiency and reduces the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a forward cross-sectional view of an aerosolized powder making continuous feeding device in Example 1 of the present invention.

[0025] Figure 2 It is a front cross-sectional view of the transmission mechanism in Example 1 of the present invention.

[0026] Figure 3 It is a side view of the transmission mechanism in Example 1 of the present invention.

[0027] Figure 4 This is a diagram of the initial state of the clamping mechanism in Example 1 of the present invention.

[0028] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0029] Figure 6 This is a state diagram of the clamping mechanism in Example 1 of the present invention when it is ready to clamp the chuck.

[0030] Figure 7 It is an enlarged view of point B in Example 1 of the present invention.

[0031] Figure 8 This is a schematic diagram of the clamping cylinder of the clamping mechanism in Example 1 of the present invention retracting to drive the clamping ball to cooperate with the annular clamping groove.

[0032] Figure 9 yes Figure 8 Enlarged view of point C in the middle.

[0033] Figure 10 This is a state diagram of the clamping mechanism in Example 1 of the present invention completing the clamping of the chuck.

[0034] Figure 11 yes Figure 10 Enlarged view of point D in the middle.

[0035] Figure 12 It is a structural schematic diagram of the feeding system in Example 1 of the present invention.

[0036] Figure 13 3. It is a top view of the horizontal turntable in Example 1 of the present invention.

[0037] In the figure: 1. Transmission system; 2. Feeding system; 3. Feeding chamber door; 4. Induction coil; 5. Electrode; 6. Feeding chamber; 7. Atomizing spray disc; 8. Atomizing chamber; 9. Lifting motor; 10. First reducer; 11. Rotating motor; 12. Second reducer; 13. Driving gear; 14. Driven gear; 15. Screw nut; 16. Transmission shaft; 17. Lifting screw; 18. Dynamic sealing structure; 19. Clamping cylinder; 20. Linear guide pair; 201. Linear guide; 202. Sliding block; 21. Lifting platform; 22. External shaft; 221 , outer expansion structure; 222, inner cavity; 23, inner shaft; 231, clamping countersunk hole; 232, sliding through hole; 233, closing structure; 24, clamping ball; 25, clamping head; 251, clamping block; 252, annular clamping groove; 26, switching motor; 27, third reducer; 29, rotating shaft; 30, horizontal turntable; 301, mounting hole; 302, first hole; 303, second hole; 304, connecting hole; 31, rotary feed mechanism; 32, clamping mechanism; 33, lifting mechanism; 34, rotating mechanism; 35, mounting frame; 36, bearing. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application: Specific embodiment 1:

[0040] In this embodiment, if Figure 2 As shown, the distance between the lifting screw 17 and the rotating shaft is in the left-right direction, and the distance between the two linear guide rails 201 is in the front-back direction. Figure 13 As shown, the positive direction is the counterclockwise direction of the horizontal rotation, and the reverse direction is the clockwise direction of the horizontal turntable 30.

[0041] refer to Figures 1 to 13 A gas atomization powder making continuous feeding device of the present invention (hereinafter referred to as the continuous feeding device) includes a feeding chamber 6 and an atomization chamber 8, wherein the feeding chamber 6 is arranged at the upper end of the atomization chamber 8, an atomization spray disc 7 is arranged between the atomization chamber 8 and the feeding chamber 6, and an induction coil 4 is arranged at a position corresponding to the atomization spray disc 7 in the lower middle part of the feeding chamber 6.

[0042] A feeding system 2 and a transmission system 1 are also provided on the feeding chamber 6. Specifically, the feeding system 2 includes a horizontal turntable 30 and a rotating mechanism that drives the horizontal turntable 30 to rotate. The horizontal turntable 30 is provided with a plurality of mounting holes 301 in a circular array along its rotation axis. The mounting holes 301 include a first hole 302 and a second hole 303 that are interconnected. An electrode 5 is passed through each mounting hole 301. A clamping head 25 is installed at the upper end of the electrode 5. Specifically, a threaded structure extending downward is provided at the lower end of the clamping head 25, and an adaptive threaded hole is provided at the upper end of the electrode 5. The threaded structure is threadedly matched with the threaded hole, so that the clamping head 25 and the electrode 5 are detachably fixedly connected.

[0043] The outer diameter of the clamp 25 is larger than the diameter of the electrode 5, the inner diameter of the first hole 302 is adapted to the diameter of the electrode 5 and is smaller than the outer diameter of the clamp 25, and the electrode 5 can be located and clamped in the first hole 302 through the clamp 25, and the inner diameter of the second hole 303 is larger than the outer diameter of the clamp 25.

[0044] The transmission system 1 includes a rotary feed mechanism 31 and a gripping mechanism 32. The gripping mechanism 32 is used to grip the chuck 25. The rotary feed mechanism 31 drives the gripping mechanism 32 to rotate and move along the feed direction. Specifically, the gripping mechanism 32 is arranged above the induction coil 4. The distance between the center of the first hole 302 and the rotation center of the horizontal turntable 30 is the same as the distance between the center of the second hole 303 and the rotation center of the horizontal turntable 30. That is, the center of the first hole 302 and the center of the second hole 303 are on a circle concentric with the rotation center of the horizontal turntable 30.

[0045] The rotation route of the mounting hole 301 passes through the vertical center line of the clamping mechanism 32, and the outer diameter of the clamping mechanism 32 is not larger than the inner diameter of the second hole 303. After the clamping mechanism 32 clamps the chuck 25, the rotating feeding mechanism 31 can drive the clamping mechanism 32 to rotate downward through the second hole 303 for atomization.

[0046] During specific use, the rotating mechanism first rotates forward to drive one of the electrodes 5 on the horizontal turntable 30 to move below the clamping mechanism 32. The rotating feeding mechanism 31 then drives the clamping mechanism 32 toward the corresponding electrode 5 below. The clamping mechanism 32 clamps the clamping head 25 of the corresponding electrode 5. The rotating mechanism then reverses a certain angle so that the electrode 5 is positioned within the corresponding second hole 303. The rotating feeding mechanism 31 then drives the electrode 5 on the clamping mechanism 32 through the second hole 303 and rotates downward to feed the electrode 5 for atomization.

[0047] After the electrode 5 is atomized, the rotating feeding mechanism 31 drives the electrode 5 to move upward until the clamping head 25 is above the horizontal turntable 30, and the rotating mechanism rotates in the opposite direction until the electrode 5 is back in the corresponding first hole 302, and the clamping mechanism 32 releases the clamping head 25 so that the atomized electrode 5 is seated again on the horizontal turntable 30.

[0048] The horizontal turntable 30 is rotated forward by a certain angle so that the second electrode 5 is located below the clamping mechanism 32 , and the above-mentioned action is repeated to continue atomization.

[0049] The horizontal turntable 30 can be used to arrange multiple electrodes 5 in a single batch. The rotary feeding mechanism 31 and the clamping mechanism 32, in conjunction with the rotation mechanism, can drive each electrode 5 to be atomized in turn, thereby realizing continuous feeding. After each electrode 5 is atomized, it is not necessary to open the vacuum chamber and reload a new electrode 5, thereby improving production efficiency and reducing the workload of operators.

[0050] Preferably, in this embodiment, the clamping mechanism 32 includes a transmission shaft 16, the rotary feeding mechanism 31 includes a rotating mechanism 34 and a lifting mechanism 33, a lifting platform 21 is rotatably mounted on the transmission shaft 16, the lifting mechanism 33 drives the lifting platform 21 to rise and fall, and the rotating mechanism 34 is installed on the lifting platform 21, and the rotating mechanism 34 drives the transmission shaft 16 to rotate.

[0051] Specifically, in this embodiment, the lifting mechanism 33 includes a mounting frame 35 and a screw nut mechanism installed on the mounting frame 35. The lifting platform 21 is vertically slidably installed on the mounting frame 35, and the screw nut mechanism drives the lifting platform 21 to move vertically up and down.

[0052] Specifically, in this embodiment, Figure 2 、 3 As shown, a group of vertically extending linear guide rails 201 are respectively provided on the front and rear sides of the interior of the mounting frame 35, and a group of sliding blocks 202 are respectively fixedly provided on the front and rear sides of the lifting platform 21. The sliding blocks 202 are set on the corresponding linear guide rails 201 along the vertical sliding, and form a linear guide pair 20 with the linear guide rails 201. The vertical sliding of the lifting platform 21 is realized by utilizing the sliding blocks 202 and the linear guide rails 201.

[0053] The screw-nut mechanism includes a lifting screw 17, a screw nut 15, and a lifting motor 9. Specifically, a vertical through-hole adapted for the screw nut 15 is provided on the left side of the lifting platform 21. The outer periphery of the screw nut 15 is fixedly mounted within the vertical through-hole, and the lifting screw 17 passes through the screw nut 15 and engages with the screw nut 15. The upper and lower ends of the lifting screw 17 are rotatably mounted on the mounting bracket 35 via bearings 36.

[0054] The lifting motor 9 is driven by the first reducer 10 and the lifting screw 17. Specifically, the first reducer 10 is arranged at the upper end of the mounting frame 35 at a position corresponding to the lifting screw 17. The lifting motor 9 is arranged at the upper end of the first reducer 10. The lifting motor 9 is driven by the input end of the first reducer 10, and the lifting screw 17 is driven by the output end of the first reducer 10. The lifting motor 9 drives the first reducer 10 and then drives the lifting screw 17 to rotate. The lifting screw 17 drives the screw nut 15 to move vertically and then drives the lifting platform 21 to move vertically. Of course, in other embodiments, the lifting mechanism 33 can also be a lifting cylinder, the cylinder body of the lifting cylinder is fixed to the mounting frame 35, the cylinder rod of the lifting cylinder extends downward and is fixed to the lifting platform 21, and the lifting cylinder is used to drive the lifting platform 21 to move up and down.

[0055] Specifically, in this embodiment, the transmission shaft 16 extends vertically and is positioned in the middle of the lifting platform 21. The transmission shaft 16 is rotatably mounted on the lifting platform 21 via a bearing 36. The rotating mechanism 34 is positioned on the right side of the lifting platform 21, with the rotating mechanism 34 and the lifting mechanism 33 positioned on the left and right sides of the transmission shaft 16. The rotating mechanism 34 includes a rotating motor 11, a driving gear 13, and a driven gear 14. The driven gear 14 is fixedly mounted on the transmission shaft 16. The rotating motor 11 drives the driving gear 13 to rotate via the second speed reducer 12, and the driving gear 13 and the driven gear 14 engage for transmission.

[0056] Specifically, the rotating motor 11 is fixedly mounted on the lifting platform 21 via a motor mounting bracket. The output shaft at the lower end of the rotating motor 11 is coupled to the input end of the second reducer 12 for transmission. The output shaft of the second reducer 12 is locked in rotation with the driving gear 13. The rotating motor 11 drives the driving gear 13 to rotate, which in turn drives the driven gear 14 to rotate, thereby driving the transmission shaft 16.

[0057] In this embodiment, preferably, Figure 4 、 5 As shown, the transmission shaft 16 includes an outer shaft 22, an inner shaft 23, and a vertical drive mechanism. The outer shaft 22 has an inner cavity 222 with an open bottom end. The inner shaft 23 is coaxially disposed within the inner cavity 222. The vertical drive mechanism drives the inner shaft 23 to move vertically relative to the outer shaft 22. An upwardly extending clamping counterbore 231 is defined at the lower end of the inner shaft 23. A clamping block 251 is disposed at the upper end of the clamping head 25, adapted to fit within the clamping counterbore 231. Multiple outwardly extending sliding holes 232 are circumferentially spaced along the inner wall of the clamping counterbore 231. Adaptive clamping balls 24 are disposed within the sliding holes 232, which roll within the sliding holes 232. The circumferential surface of the clamping block 251 is provided with an annular clamping groove 252 corresponding to the clamping balls 24. A plenum for accommodating the clamping balls 24 is provided at the lower portion of the inner cavity 222 of the outer shaft 22.

[0058] The accommodating space is utilized to avoid interference between the clamping block 251 and the clamping ball 24 when entering and exiting the clamping counterbore 231. The annular clamping groove 252 is utilized to cooperate with the clamping ball 24. When the vertical driving mechanism drives the inner shaft 23 to rise, the clamping ball 24 penetrates into the annular clamping groove 252. The clamping ball 24 and the annular clamping groove 252 are abutted to clamp the clamping block 251 tightly in the clamping counterbore 231, thereby achieving clamping of the electrode 5.

[0059] Specifically, in this embodiment, a plurality of sliding through holes 232 are arranged in a circumferential array along the axis of the clamping counterbore 231 .

[0060] Specifically, in this embodiment, the inner cavity 222 of the outer shaft 22 is a through-hole structure, and the vertical drive mechanism is a clamping cylinder 19 disposed at the upper end of the outer shaft 22. Specifically, the cylinder body of the clamping cylinder 19 is fixed to the upper end of the outer shaft 22, and the cylinder rod of the clamping cylinder 19 extends downward and is fixed to the inner shaft 23. Specifically, the lower end of the cylinder rod of the clamping cylinder 19 is threadedly engaged and fixedly connected to the upper end of the inner shaft 23.

[0061] Preferably, in this embodiment, a closing structure 233 is provided inside the sliding through hole 232. The inner diameter of the closing structure 233 is smaller than the diameter of the clamping ball 24. This prevents the clamping ball 24 from accidentally sliding out of the sliding through hole 232. The sliding through hole 232 is an inclined hole with a higher inner side and a lower outer side. This inclined hole allows the clamping ball 24 to slide smoothly into or out of the annular clamping groove 252 under the action of gravity and external forces, thereby improving the efficiency of clamping and releasing the electrode 5.

[0062] Preferably, in this embodiment, the accommodating space is an outer flared structure 221 provided at the lower end of the outer shaft 22. When the clamping head 25 is not initially clamped, the horizontal distance between the position where the outer flared structure 221 is tangent to the clamping ball 24 and the inner side of the sliding through hole 232 is not less than the diameter of the clamping ball 24. Specifically, in this embodiment, if Figure 5 As shown, in the initial state, the horizontal distance between the position where the outer expansion structure 221 is tangent to the clamping ball 24 and the inner side of the sliding through hole 232 is equal to the diameter of the clamping ball 24, thereby preventing the clamping block 251 from interfering with the clamping ball 24 when the clamping block 251 penetrates into the countersunk hole 231.

[0063] Of course, in other embodiments, when the actual clamping requirements are met, in the initial state, the horizontal distance between the position where the outer expansion structure 221 is tangent to the clamping ball 24 and the inner side of the sliding through hole 232 may also be greater than the diameter of the clamping ball 24.

[0064] Specifically, in this embodiment, the annular clamping groove 252 is arranged in the middle and lower position of the clamping block 251. The height of the annular clamping groove 252 on the upper part of the clamping block 251 is adapted to the distance from the sliding through hole 232 to the bottom end of the clamping countersunk hole 231, and the upper and lower sides of the annular clamping groove 252 are provided with chamfered corners.

[0065] Set it up like this, Figure 5 As shown, in the initial state, the lower end of the inner shaft 23 extends out of the outer shaft 22, and the upper side of the sliding hole 232 does not exceed the lower end of the outer shaft 22. At the same time, the extension distance of the inner shaft 23 causes the clamping ball 24 to slide outward under the action of gravity until it abuts against the outer expansion structure 221, and the inner side of the clamping ball 24 is flush with the inner side of the sliding hole 232.

[0066] When it is necessary to clamp the electrode 5, Figure 6 、 7 As shown, the lifting mechanism 33 drives the rotating shaft to descend. Since the clamping ball 24 is entirely inside the sliding through hole 232, the clamping head 25 can be entirely inserted into the clamping countersunk hole 231. At this time, the clamping ball 24 is docked with the annular clamping groove 252.

[0067] like Figure 8 、 9 As shown, the clamping cylinder 19 drives the inner shaft 23 to move upward, and under the action of the outer expansion structure 221, the clamping ball 24 moves inward and penetrates into the clamping countersunk hole 231. At this time, the clamping ball 24 is already inside the annular clamping groove 252.

[0068] Combine Figure 10 、 11 The clamping cylinder 19 continues to move upward, and the clamping ball 24 continues to move inward under the action of the outer expansion structure 221. The clamping ball 24 abuts against the annular clamping groove 252, driving the clamping head 25 to move upward. When the lower end of the outer shaft 22 abuts against the clamping head 25, the clamping block 251 just abuts against the bottom of the clamping counterbore 231. At the same time, the clamping ball 24 is clamped by the annular clamping groove 252 and the inner wall of the outer shaft 22, realizing pneumatic clamping of the clamping head 25 and completing the clamping of the clamping head 25.

[0069] When the clamping head 25 needs to be released, the above steps can be reversed.

[0070] In this embodiment, if Figure 12 、 13As shown, the rotary feed mechanism 31 and the rotation mechanism are both arranged at the upper end of the loading chamber 6. Specifically, the transmission system 1 and the loading system 2 are respectively arranged on the left and right sides of the loading chamber 6, and an adapted loading chamber hatch 3 is provided on the right side of the loading chamber 6 at a position corresponding to the horizontal turntable 30. The rotation mechanism includes a switching motor 26, a third reducer 27 and a rotating shaft 29. The third reducer 27 is arranged at the upper end of the loading chamber 6. The switching motor 26 is driven by the third reducer 27 and the rotating shaft 29. The axis of the rotating shaft 29 extends vertically. The lower end of the rotating shaft 29 extends into the loading chamber 6 and is fixed to the center hole of the horizontal turntable 30. The switching motor 26 is used to drive the rotating shaft 29 to rotate, thereby driving the horizontal turntable 30 to rotate.

[0071] In this embodiment, the lower end of the transmission shaft 16 and the lower end of the rotating shaft 29 are both deep into the loading chamber 6, so the following are provided between the transmission shaft 16 and the loading chamber 6, and between the rotating shaft 29 and the loading chamber 6: Figure 2 、 12 Specifically, the outer periphery of the transmission shaft 16 passes through the dynamic sealing structure 18 provided at the upper end of the loading chamber 6 and penetrates into the loading chamber 6, and the rotating shaft 29 passes through the dynamic sealing structure 18 provided at the upper end of the loading chamber 6 and penetrates into the loading chamber.

[0072] Likewise, in this embodiment, Figure 1 、 2 As shown in FIG4, the inner shaft 23 is slidably arranged in the outer shaft 22, and the lower end of the inner shaft 23 is in the loading chamber 6 and the upper end of the inner shaft 23 extends out of the loading chamber 6. Therefore, in order to avoid the inert gas from leaking from between the inner shaft 23 and the outer shaft 22, as shown in FIG4. Figure 4 、 5 As shown, the inner cavity 222 of the outer shaft 22 is a variable diameter structure with a larger upper portion and a smaller lower portion. The small diameter section at the lower portion of the inner cavity 222 is adapted to the outer diameter of the inner shaft 23, and an adapted dynamic sealing structure 18 is provided between the small diameter section and the inner shaft 23. The inner shaft 23 slides vertically smoothly while ensuring sealing. Specifically, as Figure 11 As shown, the dynamic sealing structure 18 at the small diameter section is located above the clamping ball 24 after the clamping head 25 is clamped, so as to prevent the clamping ball 24 from pressing on the sealing ring and other structures of the dynamic sealing structure 18 when moving upward and affecting its use.

[0073] In this embodiment, the dynamic sealing structure 18 is a combined seal formed by a lip seal and a star seal, that is, a dynamic seal formed by combining a lip seal ring, a star seal ring, an O-ring, etc., which realizes the function of sealing the moving parts and ensuring the vacuum state of the atomization chamber 8.

[0074] The dynamic sealing structure 18 is a conventional structure in the art and is common knowledge known to those skilled in the art, and will not be described in detail here.

[0075] In this embodiment, if Figure 13 As shown, a transitional connecting hole 303 is provided between the first hole 302 and the second hole 303. The inner diameter of the first hole 302 is set to φE, the radial width of the connecting hole is φD, and the inner diameter of the second hole 303 is φF, with φE≤φD<φF. φE is sized to match the inner diameter of the electrode 5 and is smaller than the outer diameter of the chuck 25, while φF is sized to be larger than the outer diameter of the chuck 25. φD is sized smaller than the outer diameter of the chuck 25 and is an arc-shaped hole that matches the rotation path of the mounting hole 301. The outer diameter of the chuck 25 matches the outer diameter of the drive shaft 16. After the clamping mechanism 32 clamps the chuck 25, the horizontal turntable 30 rotates, and the electrode 5 transitions to the second hole 303 through the connecting hole 304. The angle between the first hole 302 and the second hole 303 in the same mounting hole 301 is G, and the angle between two first holes 302 in adjacent mounting holes 301 is H.

[0076] The method of using this application is:

[0077] Step 1: Open the loading chamber door 3 , install the electrode 5 on each mounting hole 301 of the horizontal turntable 30 , and make the clamping head 25 of the electrode 5 sit on the corresponding first hole 302 .

[0078] Step 2: The rotating mechanism drives the horizontal turntable 30 to rotate, and one of the electrodes 5 is directly below the inner shaft 23 of the clamping mechanism 32. The rotating feeding mechanism 31 drives the clamping mechanism 32 to move downward. After the clamping block 251 extends into the clamping counterbore 231, the clamping cylinder 19 moves upward, driving the clamping head 25 to move upward until the clamping block 251 abuts the bottom of the clamping counterbore 231. The clamping mechanism clamps the clamping head 25, and the clamping mechanism 32 clamps the electrode 5. The rotating mechanism rotates forward by an angle G, so that the electrode 5 is inserted into the corresponding second hole 303. The rotating feeding mechanism 31 drives the clamping mechanism 32 to rotate and feed. The electrode 5 passes through the second hole 303 and is fed to the starting position of the smelting of the induction coil 4. The end of the electrode 5 is heated and melted. The molten droplets enter the atomizing spray disc 7 and form metal powder in the atomizing chamber 8, completing the melting and atomization of the electrode 5.

[0079] Step 3: After atomization of one electrode 5 is complete, the lifting mechanism 33 drives the transmission shaft 16 to move rapidly to the upper limit. At this point, the clamping head 25 passes upward through the corresponding second hole 303 and is located above the horizontal turntable 30. The rotating mechanism drives the horizontal rotation clockwise through the angle G. The clamping cylinder 19 drives the inner shaft 23 downward, the clamping ball 24 moves outward, the clamping block 251 disengages from the clamping countersunk hole 231, and the clamping head 25 and the remaining material are replaced in the first hole 302 of the mounting hole 301.

[0080] Step 4: The horizontal turntable 30 rotates counterclockwise through an angle H, and the next electrode 5 is aligned with the gripping mechanism 32. The above steps are repeated, and the transmission system 1 drives the next electrode 5 to melt and atomize. This cycle repeats, repeating steps 2 and 3, until all electrodes 5 on the horizontal turntable 30 are atomized. The loading chamber door 3 is then opened to replace a new batch of electrodes 5.

[0081] In summary, the continuous feeding device of the present invention, by providing a loading chamber 6 and an atomizing chamber 8, in conjunction with a loading system 2 and a transmission system 1, changes the existing mode of operation in which the atomization of one electrode 5 requires interruption for loading and vacuuming. The mounting holes 301 in the annular array on the horizontal turntable 30 can accommodate multiple electrodes 5. When atomization of one electrode 5 is completed, the clamping mechanism 32 of the transmission system 1 can directly clamp the next electrode 5, achieving continuous feeding, significantly reducing the time spent on loading and vacuuming, improving production efficiency, and significantly increasing production capacity.

[0082] An embodiment of an aerosolized powder making method of the present invention has been described in the embodiment of the aerosolized powder making continuous feeding device mentioned above, and will not be described in detail here.

[0083] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0084] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0085] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A continuous feeding device for aerosolized powder making, characterized in that: It includes a loading chamber and an atomization chamber, the loading chamber is arranged at the upper end of the atomization chamber, and a loading system and a transmission system are arranged on the loading chamber, the loading system includes a horizontal turntable and a rotating mechanism for driving the horizontal turntable to rotate, and the horizontal turntable is provided with a plurality of mounting holes in a circular array along its rotation axis, the mounting holes include a first hole and a second hole that are interconnected, an electrode is passed through the mounting holes, a clamp is installed at the upper end of the electrode, the outer diameter of the clamp is larger than the diameter of the electrode, the inner diameter of the first hole is adapted to the diameter of the electrode and smaller than the outer diameter of the clamp, the inner diameter of the second hole is larger than the outer diameter of the clamp, and the transmission system includes a rotary feeding mechanism and a clamping mechanism, the rotary feeding mechanism drives the clamping mechanism to rotate and move along the feeding direction, and the clamping mechanism is used to clamp the clamp.

2. The gas atomization powder making continuous feeding device according to claim 1, characterized in that: The clamping mechanism includes a transmission shaft, the rotary feeding mechanism includes a rotating mechanism and a lifting mechanism, a lifting platform is rotatably mounted on the transmission shaft, the lifting mechanism drives the lifting platform to rise and fall, the rotating mechanism is mounted on the lifting platform, and the rotating mechanism drives the transmission shaft to rotate.

3. The gas atomization powder making continuous feeding device according to claim 2, characterized in that: The lifting mechanism includes a mounting frame and a screw-nut mechanism mounted on the mounting frame. The lifting platform is mounted on the mounting frame in a vertical sliding manner. The screw-nut mechanism drives the lifting platform to move vertically up and down.

4. The gas atomization powder making continuous feeding device according to claim 2, characterized in that: The rotating mechanism includes a rotating motor, a driving gear and a driven gear. The driven gear is fixed on the transmission shaft. The rotating motor drives the driving gear to rotate. The driving gear and the driven gear are meshed and transmitted.

5. The gas atomization powder making continuous feeding device according to claim 2, characterized in that: The transmission shaft includes an outer shaft, an inner shaft and a vertical driving mechanism. The outer shaft is provided with an inner cavity with an opening at the lower end. The inner shaft is coaxially arranged in the inner cavity. The vertical driving mechanism drives the inner shaft to move vertically relative to the outer shaft. The lower end of the inner shaft is provided with an upwardly extending clamping countersunk hole. The upper end of the clamping head is provided with a clamping block adapted to the clamping countersunk hole. A plurality of outwardly extending sliding through holes are provided on the inner wall of the clamping countersunk hole at circumferential intervals. A matching clamping ball is provided in the sliding through hole. The circumferential surface of the clamping block is provided with an annular clamping groove corresponding to the clamping ball. The lower part of the inner cavity of the outer shaft is provided with an accommodating space for accommodating the clamping ball.

6. The gas atomization powder making continuous feeding device according to claim 5, characterized in that: A closing structure is provided on the inner side of the sliding through hole, and the inner diameter of the closing structure is smaller than the diameter of the clamping ball.

7. The gas atomization powder making continuous feeding device according to claim 5, characterized in that: The sliding through hole is an inclined hole with a higher inner side and a lower outer side.

8. The gas atomization powder making continuous feeding device according to claim 5, characterized in that: The accommodating space is an outward flared structure opened at the lower end of the outer shaft, and the horizontal distance between the position where the outward flared structure is tangent to the clamping ball and the inner side of the sliding through hole is not less than the diameter of the clamping ball.

9. The gas atomization powder making continuous feeding device according to claim 2, characterized in that: The rotary feeding mechanism and the rotating mechanism are both arranged at the upper end of the loading chamber, the lower end of the transmission shaft penetrates into the loading chamber, and a dynamic sealing structure is provided between the transmission shaft and the loading chamber.

10. A method for producing powder by aerosolization, characterized in that: The aerosolized powder making continuous feeding device according to any one of claims 1 to 9 comprises the following steps: Step 1: Install the electrodes on each mounting hole of the horizontal turntable, and make the electrode clamp seat on the first hole; Step 2: The rotary feeding mechanism drives the clamping mechanism to move downward, the clamping mechanism clamps the electrode, and the rotating mechanism rotates forward, so that the electrode is inserted into the corresponding second hole. The rotary feeding mechanism drives the clamping mechanism to rotate and feed, and the electrode passes through the second hole and moves toward the high-frequency induction coil. The end of the electrode is heated and melted, and the melted droplets enter the atomizing spray disc and form metal powder in the atomizing chamber; Step 3: After an electrode is atomized, the rotary feed mechanism drives the electrode upward until the clamping head is above the corresponding second hole. The rotating mechanism rotates in the opposite direction, the clamping mechanism is released, and the electrode falls into the corresponding first hole. The atomized electrode head is placed back on the horizontal turntable. Step 4: The rotating mechanism rotates forward until the next electrode corresponds to the clamping mechanism, and the above steps 2 and 3 are repeated until all electrodes are atomized and replaced with a new batch of electrodes.

Images