Ultrasonic-assisted multi-material additive manufacturing equipment

Abstract

The present invention relates to the field of additive manufacturing equipment, specifically an ultrasonic-assisted multi-material additive manufacturing equipment, including a sealed chamber, an ultrasonic transducer fixedly installed on the left side of the sealed chamber, an atomizing substrate fixedly connected to the right side of the ultrasonic transducer, and a liquid guiding mechanism for striking dripping metal droplets onto the atomizing substrate. The present invention adopts a diverter to divert the metal droplets, and the metal droplets can be struck to different positions on the atomizing substrate through a striking plate, thereby avoiding the metal droplets dripping on the same position on the atomizing substrate for a long time and improving the service life of the ultrasonic atomizing substrate. The present invention adopts the cutting and diversion of the diverter and the striking of the striking plate to pre-decompose the original metal droplets into several small droplets, thereby increasing the contact area between the metal droplets and the atomizing substrate, thereby improving the decomposition effect of the atomizing substrate on the metal droplets.

Description

Technical Field

[0001] The present invention relates to the field of additive manufacturing equipment, and in particular to an ultrasonically assisted multi-material additive manufacturing equipment. Background Art

[0002] Multi-material additive manufacturing refers to a 3D printing technology. The raw materials for multi-material additive manufacturing usually use fine-particle metal powder. Currently, ultrasonic atomization powder making is widely used to produce fine metal powder to assist additive manufacturing.

[0003] Ultrasonic atomization powder making is to melt metal wire or rod in an oxygen-free chamber through electromagnetic induction heating or plasma arc heating. The molten metal droplets are then dropped onto an ultrasonic atomization substrate. The vibration of the ultrasonic atomization substrate is used to break the molten metal into tiny droplets. These droplets are quickly solidified under an inert gas protective atmosphere to form high-quality spherical metal powder.

[0004] However, since the position of the ultrasonic atomization substrate needs to be fixed, the dripping molten metal droplets always contact the fixed position on the ultrasonic atomization substrate, which can easily cause the ultrasonic atomization substrate to bend, deform, etc., thereby affecting the decomposition effect of the ultrasonic atomization substrate on the molten metal droplets and reducing the service life of the ultrasonic atomization substrate.

[0005] In addition, when the molten metal droplets fall on the ultrasonic atomization substrate, since the droplet position does not change, the ultrasonic atomization substrate has not yet completely decomposed the previous droplet of metal droplets, and the next drop of metal droplets falls on the ultrasonic atomization substrate, causing the metal droplets to accumulate, thereby reducing the decomposition effect of the ultrasonic atomization substrate. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an ultrasonic-assisted multi-material additive manufacturing device, including a sealed chamber, an ultrasonic transducer is fixedly installed on the left side of the sealed chamber, an atomizing substrate is fixedly connected to the right side of the ultrasonic transducer, and a liquid guiding mechanism is provided on the sealed chamber for hitting dripping metal droplets onto the atomizing substrate.

[0007] The liquid guiding mechanism includes a rotating shaft rotatably arranged on the top wall of the sealed chamber, and the rotating shaft is arranged in a state of gradually tilting to the right from bottom to top. A diverter is fixedly installed on the lower part of the rotating shaft. The diverter has a conical structure with a cross-section of a five-pointed star, and the cross-sectional area of ​​the diverter gradually decreases from bottom to top. The axial position inside the sealed chamber is connected to a rotating disk through an adjusting component, and the rotating disk is provided with striking plates connected thereto for sliding up and down at equal intervals along its circumference.

[0008] The liquid guiding mechanism further includes a switching component for quickly changing the angle of the rotating shaft, and the liquid guiding mechanism further includes a scraping component for cleaning the striking plate.

[0009] The adjustment assembly includes a support plate that is slidably arranged on the right side of the arc-shaped inner wall of the sealed chamber, and a follower column is fixedly installed at the axis position of the lower part of the rotating disk, and the follower column is rotatably connected to the support plate.

[0010] There is an angle between the striking plate and the radial direction of the rotating disk. When the rotating disk rotates, the striking plate is driven to hit the metal droplets flowing down from the diverter and swing them onto the atomizing substrate.

[0011] As a preferred technical solution of the present invention, an explosion-proof motor is fixedly installed on the left side of the lower part of the support plate, and the output shaft of the explosion-proof motor is fixedly connected to the follower column.

[0012] As a preferred technical solution of the present invention, the adjustment assembly further includes an adjustment screw rotatably arranged on the right side outside the sealed chamber, and the adjustment screw is threadedly connected to the support plate.

[0013] As a preferred technical solution of the present invention, the adjustment assembly also includes two guide blocks fixedly installed on the front and rear side surfaces of the support plate, and a slope gradually tilted from bottom to top is provided on the right side of the guide block. Two fixed blocks corresponding to the guide blocks are fixedly installed on the right side of the curved inner wall of the sealed chamber, and a slope corresponding to the slope of the guide block is provided on the left side of the fixed block, and the slope of the fixed block is slidably connected with the slope of the guide block at the corresponding position.

[0014] As a preferred technical solution of the present invention, the atomizing substrate has an arc-shaped structure, the atomizing substrate cover is arranged on the outer left side of the rotating disk, and the atomizing substrate is arranged in a posture gradually tilted from bottom to top toward the right, and the inclination angle of the atomizing substrate is consistent with the inclined angle of the guide block.

[0015] As a preferred technical solution of the present invention, the switching assembly includes a locking plate fixedly mounted on the upper outer side of the rotating shaft, five positioning holes are provided on the locking plate at equal intervals along its circumference, a locking rod is provided on the upper part of the sealing chamber for sliding along the axial direction of the rotating shaft, and a return spring is provided between the lower end of the locking rod and the sealing chamber.

[0016] As a preferred technical solution of the present invention, the scraping assembly includes scraping members that are evenly spaced inside the rotating disk along the axial direction and correspond one-to-one to the striking plates. The scraping members are located on the side of the striking plate that is in the same direction of rotation as the striking plate, and a push spring is arranged between the scraping members and the rotating disk.

[0017] As a preferred technical solution of the present invention, the scraper has a pointed structure on one side of the striking plate close to the corresponding position, and a trapezoidal block for pushing the striking plate is fixedly installed on the lower part of the side of the striking plate in the same rotation direction as the striking plate and close to the edge of the rotating disk.

[0018] As a preferred technical solution of the present invention, a collecting bowl with a diameter gradually increasing from bottom to top is fixedly installed on the upper left side of the support plate, and the diameter of the upper part of the collecting bowl is equal to the diameter of the rotating disk. A circular ring plate is fixedly installed on the upper part of the collecting bowl, and a guide rail groove is provided on the inner side of the circular ring plate. An L-shaped rod is fixedly installed on the lower part of the striking plate, and the horizontal section of the L-shaped rod is slidably connected to the inside of the guide rail groove.

[0019] As a preferred technical solution of the present invention, the guide rail groove as a whole is a closed annular structure, and the annular segment on the left side of the guide rail groove is higher than the annular segment on the right side of the guide rail groove. At the same time, the length of the annular segment on the left side of the guide rail groove is longer than the length of the annular segment on the right side of the guide rail groove.

[0020] As a preferred technical solution of the present invention, a bracket is fixedly installed on the middle part of the upper side of the support plate, and a baffle is fixedly installed on the left side of the bracket. The left side of the baffle is an arc-shaped surface coaxial with the rotating disk. The baffle is located on the left side of the diverter and on the upper part of the striking plate.

[0021] The beneficial effects of the present invention are: 1. The present invention uses the sharp edges of the diverter to cut and divert the metal droplets, and then drives the striking plate through the rotating rotating disk to hit the diverted metal droplets onto the atomizing substrate, so that the metal droplets contact different positions of the atomizing substrate, avoiding the metal droplets dripping on the same position on the atomizing substrate for a long time, causing the atomizing substrate to bend, deform, etc., thereby improving the service life of the ultrasonic atomizing substrate.

[0022] 2. The present invention uses the cutting and diversion of the diverter and the beating of the striking plate to pre-decompose the original metal droplets into several small droplets, thereby increasing the contact area between the metal droplets and the atomizing substrate, thereby improving the decomposition effect of the atomizing substrate on the metal droplets, and at the same time preventing the accumulation of metal droplets, further ensuring the decomposition effect of the atomizing substrate on the metal droplets.

[0023] 3. The present invention adopts a switching component and an adjusting component to respectively replace the contact position of the diverter and the striking plate with the metal droplets, thereby preventing the metal droplets from adhering and accumulating on the diverter and the striking plate, affecting their pre-decomposition effect on the metal droplets. When the adjusting component moves the striking plate, it can also change the height position at which the striking plate hits the droplets onto the atomizing substrate, thereby further making full use of the atomizing substrate and further improving the service life of the atomizing substrate.

[0024] 4. The present invention adopts a scraping assembly to clean the side of the striking plate that hits the metal droplets, and at the same time can collect the cleaned metal slag through the collecting bowl, thereby ensuring the striking effect of the striking plate on the metal droplets, and preventing the metal slag from mixing with the metal powder, thereby ensuring the purity of the metal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 It is a cross-sectional view of the present invention.

[0027] Figure 2 It is a partial cross-sectional view of the sealed chamber, rotating shaft and switching assembly in the present invention.

[0028] Figure 3 This is a cross-sectional view of the sealed chamber and the liquid guiding mechanism of the present invention after removing the rotating shaft, the diverter, and the switching assembly.

[0029] Figure 4 It is a partial cross-sectional view of the rotating disk, striking plate, scraping assembly and adjusting assembly in the present invention.

[0030] Figure 5 It is a partial cross-sectional view of the rotating disk, striking plate, scraping member, trapezoidal block and L-shaped rod in the present invention.

[0031] Figure 6 It is a structural schematic diagram of the striking plate, circular ring plate, guide rail groove and L-shaped rod in the present invention.

[0032] In the figure: 1. Sealed chamber; 2. Ultrasonic transducer; 3. Atomizing substrate; 4. Liquid guiding mechanism; 41. Rotating shaft; 42. Diverter; 43. Rotating disk; 44. Beating plate; 45. Switching assembly; 46. Scraping assembly; 47. Adjusting assembly; 48. Bracket; 451. Locking plate; 452. Positioning hole; 453. Locking rod; 461. Scraping piece; 462. Trapezoidal block; 463. Collecting bowl; 464. Circular plate; 465. Guide rail groove; 466. L-shaped rod; 471. Support plate; 472. Follow-up column; 473. Adjusting screw; 474. Guide block; 475. Fixed block; 476. Explosion-proof motor; 481. Baffle. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0034] See Figure 1A multi-material additive manufacturing device using ultrasound assistance includes a sealed chamber 1, an ultrasonic transducer 2 is fixedly installed on the left side of the sealed chamber 1, an atomizing substrate 3 is fixedly connected to the right side of the ultrasonic transducer 2, and a liquid guiding mechanism 4 is provided on the sealed chamber 1 for hitting dripping metal droplets onto the atomizing substrate 3.

[0035] When it is necessary to atomize metal powder, metal droplets are first dripped into the interior of the sealed chamber 1 through the upper part thereof, and at the same time, the ultrasonic transducer 2 is started to vibrate the atomizing substrate 3, and the liquid guiding mechanism 4 diverts the falling metal droplets. Subsequently, the liquid guiding mechanism 4 slaps the diverted metal droplets onto the atomizing substrate 3, thereby atomizing and decomposing the metal droplets through the atomizing substrate 3, so that the metal droplets are cooled into metal powder in the sealed chamber 1.

[0036] See Figure 1 、 Figure 4 and Figure 5 The liquid guiding mechanism 4 includes a rotating shaft 41 rotatably arranged on the top wall of the sealed chamber 1. The rotating shaft 41 is arranged in a state of gradually tilting to the right from bottom to top. A diverter 42 is fixedly installed at the lower part of the rotating shaft 41. The diverter 42 has a conical structure with a cross-section of a five-pointed star, and the cross-sectional area of ​​the diverter 42 gradually decreases from bottom to top. The internal axis position of the sealed chamber 1 is connected to a rotating disk 43 through an adjusting component 47. The rotating disk 43 is provided with striking plates 44 slidably connected thereto up and down at equal intervals along its circumference.

[0037] See Figure 1 、 Figure 3 、 Figure 4 and Figure 5 The adjustment component 47 includes a support plate 471 which is slidably arranged on the right side of the arc-shaped inner wall of the sealed chamber 1. A follower column 472 is fixedly installed at the lower axis position of the rotating disk 43. The follower column 472 is rotatably connected to the support plate 471. An explosion-proof motor 476 is fixedly installed on the left side of the lower part of the support plate 471. The output shaft of the explosion-proof motor 476 is fixedly connected to the follower column 472. There is an angle between the striking plate 44 and the radial direction of the rotating disk 43. When the rotating disk 43 rotates, it drives the striking plate 44 to slap the metal droplets flowing down from the diverter 42 and swing them onto the atomizing substrate 3.

[0038] When it is necessary to atomize the metal powder, the explosion-proof motor 476 is started to drive the rotating disk 43 to rotate through the follower column 472, so that the rotating disk 43 drives the striking plate 44 to rotate synchronously, and in the initial state, one of the corner edges on the diverter 42 is rotated to an upward arrangement, so that the metal droplets dripping from the upper part of the sealed chamber 1 can drip on the upward corner edge of the diverter 42, thereby allowing the corner edge of the diverter 42 to cut and divert the metal droplets, and then the diverted metal droplets flow downward along the diverter 42.

[0039] The angled edges of the diverter 42 can also reduce the head-on collision between the metal droplets and the angled edges of the diverter 42 when cutting and diverting the metal droplets, thereby preventing the metal droplets from splashing. The metal droplets then flow down from the diverter 42 and fall to the position of the rotating disk 43. The rotating disk 43 drives the striking plate 44 to hit the metal droplets. The metal droplets are decomposed by colliding with the metal droplets, and the metal droplets are thrown onto the atomizing substrate 3, where the metal droplets are further decomposed.

[0040] See Figure 1 and Figure 2 The liquid guiding mechanism 4 also includes a switching assembly 45 for quickly changing the angle of the rotating shaft 41. The switching assembly 45 includes a locking plate 451 fixedly mounted on the upper outer side of the rotating shaft 41. Five positioning holes 452 are provided on the locking plate 451 at equal intervals along its circumference. A locking rod 453 is provided on the upper part of the sealed chamber 1 to slide along the axial direction of the rotating shaft 41. A return spring is provided between the lower end of the locking rod 453 and the sealed chamber 1.

[0041] In the initial state, the return spring pushes the locking rod 453 into the positioning hole 452 at the corresponding position through its own elastic force. When metal droplets adhere to and accumulate on the upward edges of the diverter 42, the operator manually presses the locking rod 453 to make the locking rod 453 withdraw from the interior of the positioning hole 452, and then manually rotates the rotating shaft 41, which drives the locking plate 451 and the diverter 42 to rotate synchronously.

[0042] When the rotating shaft 41 starts to rotate, the external force on the locking rod 453 is removed, so that the return spring pushes the locking rod 453 to rest against the locking plate 451. When an adjacent corner edge of the diverter 42 rotates upward, the locking plate 451 drives the other positioning hole 452 to move to the position of the locking rod 453, so that the return spring pushes the locking rod 453 to be inserted into the positioning hole 452 at the corresponding position, thereby locking the rotation angle of the diverter 42.

[0043] See Figure 1 、 Figure 4 and Figure 5 The liquid guiding mechanism 4 also includes a scraping assembly 46 for cleaning the striking plate 44. The scraping assembly 46 includes scraping members 461 arranged at equal intervals along the axial direction of the rotating disk 43 and corresponding to the striking plates 44 one by one. The scraping members 461 are located on the side of the striking plate 44 in the same direction of rotation as that of the rotating disk 43. A pushing spring is provided between the scraping member 461 and the rotating disk 43. The side of the scraping member 461 close to the striking plate 44 at the corresponding position has a pointed structure. A trapezoidal block 462 for pushing the striking plate 44 is fixedly installed on the side of the striking plate 44 in the same direction of rotation as that of the rotating disk 43 and close to the lower part of the edge of the rotating disk 43.

[0044] See Figure 1 、 Figure 3 and Figure 4 A collecting bowl 463 with a diameter gradually increasing from bottom to top is fixedly installed on the upper left side of the support plate 471. The diameter of the upper part of the collecting bowl 463 is equal to the diameter of the rotating disk 43. A circular plate 464 is fixedly installed on the upper part of the collecting bowl 463. A guide rail groove 465 is provided on the inner side of the circular plate 464. An L-shaped rod 466 is fixedly installed on the lower part of the striking plate 44. The horizontal section of the L-shaped rod 466 is slidably connected to the inside of the guide rail groove 465.

[0045] See Figure 3 、 Figure 4 and Figure 5 The guide rail groove 465 is a closed annular structure as a whole, and the annular segment on the left side of the guide rail groove 465 is higher than the annular segment on the right side of the guide rail groove 465. At the same time, the length of the annular segment on the left side of the guide rail groove 465 is longer than the length of the annular segment on the right side of the guide rail groove 465.

[0046] When the rotating disk 43 drives the striking plate 44 to rotate, the striking plate 44 drives the L-shaped rod 466 to move along the trajectory of the guide groove 465. When the L-shaped rod 466 moves to the left annular segment of the guide groove 465, the left annular segment of the guide groove 465 pushes the striking plate 44 upward through the L-shaped rod 466 to extend its upper side to the upper part of the rotating disk 43, so that the striking plate 44 can slap and swing the metal droplets.

[0047] When the striking plate 44 moves upward, the striking plate 44 drives the trapezoidal block 462 thereon to move synchronously, so that the inclined surface of the trapezoidal block 462 abuts against and pushes the scraper 461, and at the same time compresses the push spring, so that when the striking plate 44 slaps and swings the metal droplets, the scraper 461 does not contact the striking plate 44.

[0048] When the L-shaped rod 466 moves to the right annular segment of the guide groove 465, the right annular segment of the guide groove 465 pulls the striking plate 44 downward through the L-shaped rod 466, and the striking plate 44 drives the trapezoidal block 462 to move downward synchronously, so that the trapezoidal block 462 no longer pushes the scraper 461, and the push spring pushes the scraper 461 against the striking plate 44 again through its own elastic force, so that the striking plate 44 moves downward under the abutment of the scraper 461, and then the scraper 461 scrapes off the metal slag adhering to the striking plate 44.

[0049] When the striking plate 44 moves up again, the striking plate 44 is no longer in contact with the scraper 461, so that the scraped metal slag falls into the inside of the collecting bowl 463 through the gap between the striking plate 44 and the scraper 461, thereby collecting the metal slag through the collecting bowl 463 to prevent the metal slag from mixing with the metal powder.

[0050] See Figure 1 and Figure 3 The adjustment assembly 47 also includes an adjustment screw 473 that is rotatably arranged on the right side outside the sealed chamber 1, and the adjustment screw 473 is threadedly connected to the support plate 471.

[0051] Continue reading Figure 1 and Figure 3 The adjustment assembly 47 also includes two guide blocks 474 fixedly mounted on the front and rear side surfaces of the support plate 471. A slope gradually tilted from bottom to top toward the right is provided on the right side of the guide block 474. Two fixed blocks 475 corresponding to the guide blocks 474 are fixedly mounted on the right side of the arc-shaped inner wall of the sealed chamber 1. A slope corresponding to the slope of the guide block 474 is provided on the left side of the fixed block 475, and the slope of the fixed block 475 is slidably connected to the slope of the guide block 474 at the corresponding position.

[0052] Continue reading Figure 1 and Figure 3 The atomizing substrate 3 is in an arc-shaped structure. The atomizing substrate 3 is covered on the left side of the outer side of the rotating disk 43 , and the atomizing substrate 3 is arranged in a posture gradually tilted from bottom to top toward the right. The inclination angle of the atomizing substrate 3 is consistent with the inclined angle of the guide block 474 .

[0053] When it is necessary to change the contact position between the striking plate 44 and the metal droplets, the operator manually rotates the adjusting screw 473 so that the adjusting screw 473 drives the support plate 471 to move left and right, and the support plate 471 drives all the striking plates 44 to move synchronously through the rotating disk 43. Since the position of the diverter 42 remains unchanged, the position of the metal droplets falling from the diverter 42 remains unchanged, thereby changing the impact position of the striking plate 44 on the metal droplets, thereby increasing the service life of the striking plate 44.

[0054] When the support plate 471 moves left and right, the support plate 471 drives the guide block 474 and the fixed block 475 thereon to slide and cooperate, so that the support plate 471 moves up and down synchronously along the length direction of the inclined surface of the guide block 474, thereby causing the striking plate 44 to change the height position of the metal droplets slapped and swung to the atomizing substrate 3, thereby fully utilizing the effective area of ​​the atomizing substrate 3 and increasing the service life of the atomizing substrate 3.

[0055] Since the atomizing substrate 3 is arranged at an angle, and the inclination angle is consistent with the angle of the inclined surface of the guide block 474, when the support plate 471 drives the rotating disk 43 to move along the length direction of the inclined surface of the guide block 474, it also moves along the inclination direction of the atomizing substrate 3, so that the rotating disk 43 is always arranged coaxially with the cross-section of the corresponding height of the atomizing substrate 3, and the distance that the striking plate 44 slaps and swings the metal droplets onto the atomizing substrate 3 is always consistent, ensuring that the decomposition effect of the metal droplets by the atomizing substrate 3 is consistent.

[0056] Continue reading Figure 1 and Figure 3 A bracket 48 is fixedly installed on the middle part of the upper side of the support plate 471, and a baffle 481 is fixedly installed on the left side of the bracket 48. The left side of the baffle 481 is an arc-shaped surface coaxial with the rotating disk 43. The baffle 481 is located on the left side of the diverter 42 and on the upper part of the striking plate 44.

[0057] When the striking plate 44 slaps and swings the metal droplets onto the atomizing substrate 3, the baffle 481 always blocks the upper part of the striking plate 44 rotated to the left, preventing the metal droplets from flowing out from the upper part of the striking plate 44, so that as many metal droplets as possible are swung onto the atomizing substrate 3, further ensuring the decomposition effect of the atomizing substrate 3 on the metal droplets.

[0058] See Figures 1-6 When atomizing metal powder, the present invention also includes the following steps: the first step is to drip metal droplets into the interior of the sealed chamber 1 through the upper part thereof, and at the same time start the ultrasonic transducer 2 to vibrate the atomizing substrate 3, and start the explosion-proof motor 476 to drive the striking plate 44 to rotate.

[0059] In the second step, the metal droplets dripping from the upper part of the sealed chamber 1 can drip onto the upward edge of the diverter 42, so that the edge of the diverter 42 cuts and diverts the metal droplets, and then the diverted metal droplets flow downward along the diverter 42.

[0060] In the third step, the metal droplets flowing down from the diverter 42 fall to the position of the rotating rotating disk 43. The rotating disk 43 drives the striking plate 44 to hit the metal droplets. The metal droplets are decomposed by the collision with the metal droplets, and the metal droplets are thrown onto the atomizing substrate 3, and the metal droplets are further decomposed by the atomizing substrate 3.

[0061] In the fourth step, after metal droplets adhere to and accumulate on the upward corner edge of the diverter 42, the operator manually presses the locking rod 453 and then manually rotates the rotating shaft 41. When an adjacent corner edge of the diverter 42 is rotated upward, the return spring pushes the locking rod 453 to insert into the positioning hole 452 at the corresponding position, thereby locking the rotation angle of the diverter 42.

[0062] In the fifth step, when the contact position between the striking plate 44 and the metal droplets needs to be changed, the operator manually rotates the adjusting screw 473 to drive all the striking plates 44 to move left and right, so that the striking position of the striking plate 44 on the metal droplets changes, thereby increasing the service life of the striking plate 44, and at the same time changing the height position of the metal droplets to be slapped and swung on the atomizing substrate 3, thereby increasing the service life of the atomizing substrate 3.

[0063] In the sixth step, when the rotating disk 43 moves along the length direction of the inclined surface of the guide block 474, it also moves along the inclined direction of the atomizing substrate 3, so that the rotating disk 43 is always arranged coaxially with the cross section of the corresponding height of the atomizing substrate 3, and thus the distance that the striking plate 44 strikes and swings the metal droplets to the atomizing substrate 3 is always consistent, ensuring that the atomizing substrate 3 has a consistent decomposition effect on the metal droplets.

[0064] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered by the scope of protection of the present invention.

Claims

1. An ultrasonic-assisted multi-material additive manufacturing device, comprising a sealed chamber (1), characterized in that: An ultrasonic transducer (2) is fixedly installed on the left side of the sealed chamber (1), an atomizing substrate (3) is fixedly connected to the right side of the ultrasonic transducer (2), and a liquid guiding mechanism (4) for striking dripping metal droplets onto the atomizing substrate (3) is provided on the sealed chamber (1); The liquid guiding mechanism (4) comprises a rotating shaft (41) rotatably arranged on the top wall of the sealed chamber (1), the rotating shaft (41) being arranged in a state of gradually tilting rightward from bottom to top, a diverter (42) being fixedly mounted on the lower part of the rotating shaft (41), the diverter (42) being a conical structure with a cross section of a five-pointed star, and the cross-sectional area of ​​the diverter (42) gradually decreasing from bottom to top, the internal axis position of the sealed chamber (1) being connected to a rotating disk (43) via an adjusting component (47), and striking plates (44) being slidably connected thereto up and down being arranged on the rotating disk (43) at equal intervals along its circumference; The liquid guiding mechanism (4) further includes a switching assembly (45) for quickly changing the angle of the rotating shaft (41), and the liquid guiding mechanism (4) further includes a scraping assembly (46) for cleaning the striking plate (44); The adjustment assembly (47) includes a support plate (471) slidably arranged on the right side of the arc-shaped inner wall of the sealed chamber (1), and a follower column (472) is fixedly installed at the lower axis position of the rotating disk (43), and the follower column (472) is rotatably connected to the support plate (471); There is an angle between the striking plate (44) and the radial direction of the rotating disk (43), and when the rotating disk (43) rotates, the striking plate (44) is driven to hit the metal droplets flowing down from the diverter (42) and swing them onto the atomizing substrate (3); the atomizing substrate (3) is in an arc-shaped structure, the atomizing substrate (3) is covered on the left side of the outer side of the rotating disk (43), and the atomizing substrate (3) is arranged in a posture of gradually tilting from bottom to top toward the right.

2. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: An explosion-proof motor (476) is fixedly mounted on the left side of the lower portion of the support plate (471), and an output shaft of the explosion-proof motor (476) is fixedly connected to the follower column (472).

3. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: The adjustment assembly (47) further comprises an adjustment screw (473) rotatably arranged on the right side outside the sealed chamber (1), and the adjustment screw (473) is threadedly connected to the support plate (471).

4. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: The adjustment assembly (47) further comprises two guide blocks (474) fixedly mounted on the front and rear side surfaces of the support plate (471), a slope gradually tilted from bottom to top toward the right being provided on the right side of the guide block (474), two fixed blocks (475) corresponding to the guide blocks (474) are fixedly mounted on the right side of the arc-shaped inner wall of the sealing chamber (1), a slope corresponding to the slope of the guide block (474) is provided on the left side of the fixed block (475), and the slope of the fixed block (475) is slidably connected to the slope of the guide block (474) at the corresponding position.

5. The ultrasonic-assisted multi-material additive manufacturing device according to claim 4, characterized in that: The inclination angle of the atomizing substrate (3) is consistent with the inclined angle of the guide block (474).

6. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: The switching assembly (45) includes a locking plate (451) fixedly mounted on the upper outer side of the rotating shaft (41), five positioning holes (452) being provided on the locking plate (451) at equal intervals along its circumference, a locking rod (453) being provided on the upper part of the sealing chamber (1) so as to slide along the axial direction of the rotating shaft (41), and a return spring being provided between the lower end of the locking rod (453) and the sealing chamber (1).

7. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: The scraping assembly (46) includes scraping members (461) arranged at equal intervals along the axial direction of the rotating disk (43) and corresponding to the striking plates (44) one by one. The scraping members (461) are located on the side of the striking plate (44) that is in the same rotation direction as the striking plate (44). A pushing spring is provided between the scraping members (461) and the rotating disk (43).

8. The ultrasonic-assisted multi-material additive manufacturing device according to claim 7, characterized in that: The scraper (461) has a pointed structure on one side of the striking plate (44) at the corresponding position, and a trapezoidal block (462) for pushing the striking plate (44) is fixedly installed on the lower part of the striking plate (44) on the side in the same rotation direction as the striking plate (44) and close to the edge of the rotating disk (43).

9. The ultrasonic-assisted multi-material additive manufacturing device according to claim 7, characterized in that: A collecting bowl (463) with a diameter gradually increasing from bottom to top is fixedly mounted on the upper left side of the support plate (471). The diameter of the upper portion of the collecting bowl (463) is equal to the diameter of the rotating disk (43). A circular plate (464) is fixedly mounted on the upper portion of the collecting bowl (463). A guide rail groove (465) is provided on the inner side surface of the circular plate (464). An L-shaped rod (466) is fixedly mounted on the lower portion of the striking plate (44). The horizontal section of the L-shaped rod (466) is slidably connected to the inside of the guide rail groove (465).

10. The ultrasonic-assisted multi-material additive manufacturing device according to claim 1, characterized in that: A bracket (48) is fixedly mounted on the middle portion of the upper side of the support plate (471), and a baffle (481) is fixedly mounted on the left side of the bracket (48). The left side of the baffle (481) is an arc-shaped surface coaxial with the rotating disk (43). The baffle (481) is located on the left side of the diverter (42) and on the upper portion of the striking plate (44).

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