A feed device for an additive manufacturing apparatus

Abstract

The application relates to a feeding device for additive manufacturing equipment, which comprises a storage tank containing a high-low arranged storage part and a feeding part; a feeding mechanism containing a feeding roller, the outer side wall of the feeding roller is arranged with a plurality of feeding grooves in equal angles; a multifunctional material limiting assembly containing an ultrasonic transducer fixedly inserted into the hollow part of the feeding roller, the bottom of the feeding groove is respectively transversely movably installed with a corresponding transverse push rod, the upper part of the transverse push rod is respectively fixedly connected with a corresponding rubber pad, and the rubber pad is respectively upwardly fixedly connected with a plurality of corresponding strip-shaped spring rods; and a push-pull driving mechanism, when the transverse push rod rotates through the highest or lowest position, the push-pull driving mechanism drives the transverse push rod to move inward to abut on the ultrasonic transducer, and when the transverse push rod rotates away from the highest or lowest position, the transverse push rod is reset under the elastic force of the rubber pad. The application can effectively realize accurate control of powder supply.

Description

Technical Field

[0001] This invention relates to the technical field of auxiliary equipment for additive manufacturing equipment, specifically to a feeding device for additive manufacturing equipment, which can accurately feed materials for the processing of additive manufacturing equipment. Background Technology

[0002] SLM (Selective Laser Melting) metal 3D printing is an additive manufacturing technology based on selective laser melting (SLM) technology. It uses a high-energy-density laser beam to selectively melt layers of metal powder, building up three-dimensional metal parts layer by layer. With the development of SLM technology, it is now widely used in mold making, medical device manufacturing, and aerospace parts manufacturing. However, as the size of manufactured parts increases, the additive manufacturing printing time becomes longer, leading to a greater demand for metal powder. Traditional additive manufacturing equipment with powder feeding structures suffers from two main drawbacks: 1) In bottom-feed structures, the powder feeding cylinder is typically designed within a sealed housing with the forming cylinder, making it difficult to effectively add powder during the printing process. Therefore, the powder feeding cylinder needs to be very large to meet the powder supply requirements, resulting in a large equipment size; 2) The process of the powder feeding structure using a piston to deliver metal powder from the powder feeding cylinder cannot accurately meet the different powder supply requirements of each layer, which is quite cumbersome.

[0003] To address the aforementioned technical issues, feeding devices for additive manufacturing equipment with powder storage boxes separate from the sealed molding chamber have begun to be used. By separating the powder storage box from the sealed molding chamber, secondary powder refilling can be performed even during printing, effectively reducing the equipment size and facilitating integration with automated powder refilling machines to improve automation. Furthermore, the rotation of a feeding roller with feeding grooves at the discharge end of the powder storage box effectively and evenly carries out the powder material, and the powder supply can be effectively controlled by adjusting the rotation angle of the feeding roller. However, to ensure smooth rotation of the feeding roller, a certain gap must be maintained between the feeding roller and the powder storage box. This inevitably leads to some powder material leaking out along the feeding grooves during the rotation of the feeding roller, resulting in excessive mixing of powder material in adjacent feeding grooves. Consequently, the accuracy of powder supply control through rotation angle adjustment is significantly reduced. Moreover, as the powder material in the storage bin is output, the density of the powder material accumulated inside it will generally change significantly, which will cause the powder material to exceed the set range during the process of falling into the feeding groove due to the difference in density.

[0004] Therefore, the research objective of this invention is to design a feeding device for additive manufacturing equipment that can effectively improve the density and uniformity of powder materials entering the feeding groove, and effectively prevent excessive mixing of powder materials in two or more adjacent feeding grooves, thereby effectively achieving precise control of powder supply, without affecting the smooth implementation of the feeding process. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a feeding device for additive manufacturing equipment, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is:

[0007] A feeding device for additive manufacturing equipment, comprising:

[0008] The storage bin includes a storage section and a feeding section arranged at different heights. The storage section is connected to a corresponding feeding pipe, and the feeding section has a corresponding discharge port arranged laterally on its bottom side.

[0009] The feeding mechanism includes a feeding roller rotatably mounted on the upper side of the discharge port. The two sides of the feeding roller are separated from the feeding part. The feeding roller is hollow and is driven to rotate by a corresponding driving mechanism. The outer side wall of the feeding roller is provided with a plurality of corresponding feeding grooves at equal angles.

[0010] A multifunctional material limiting component includes an ultrasonic transducer fixedly inserted into the hollow part of the feeding roller. The ultrasonic transducer is spaced apart from the feeding roller and connected to an external ultrasonic generator. The bottom of the feeding trough is movably mounted with corresponding transverse push rods. The upper part of the transverse push rods is fixedly attached with corresponding rubber pads. The periphery of the rubber pads is fixedly adhered to the feeding trough of the corresponding feeding roller, and multiple corresponding strip spring rods are fixedly attached upward to the rubber pads.

[0011] The push-pull drive mechanism drives the transverse push rod to move inward until it abuts against the ultrasonic transducer when the transverse push rod rotates past the highest or lowest position, and the rubber pad is pulled inward; when the transverse push rod rotates away from the highest or lowest position, the push-pull drive mechanism does not drive the transverse push rod, and the transverse push rod returns to its original position under the elastic force of the rubber pad.

[0012] The push-pull drive mechanism includes magnets installed at the upper and lower ends of the ultrasonic transducer. The transverse push rod is made of engineering plastic, and magnetic metal parts adapted to the magnets are fixedly installed at the inner ends of the transverse push rod.

[0013] Multiple corresponding abutting balls are rolled on both sides and the bottom of the transverse push rod. The abutting balls on both sides of the transverse push rod are hollow and filled with many corresponding vibration damping particles.

[0014] The vibration damping particles are spherical particles made of metal or polymer materials.

[0015] An upper powder guide plate is fixedly installed inside the feeding section for guiding materials into the feeding trough of the feeding roller. Along the rotation direction of the feeding roller, the upper powder guide plate is located on the top front side of the feeding roller, and a corresponding guiding slope is provided on the rear side of the upper powder guide plate.

[0016] A lower powder guide plate for discharging materials is fixedly installed inside the feeding section. Along the rotation direction of the feeding roller, the lower powder guide plate is located at the front of the feeding roller. A corresponding pressing slope is provided on the rear side of the lower powder guide plate, and a corresponding comb-tooth scraper is fixedly connected to the rear side of the lower powder guide plate at an upward inclination.

[0017] The comb-tooth scraper is made of spring steel, and the upper end of the comb-tooth scraper extends into the feeding groove of the feeding roller and is offset from the strip spring rod.

[0018] The drive mechanism adopts a belt drive mechanism. The two ends of the ultrasonic transducer extend through to the outside of the feeding roller and are fixedly connected to the storage part of the storage box through corresponding vibration damping connection components. The vibration damping connection components include fixing members installed on the storage part and the two ends of the ultrasonic transducer. The fixing members are connected to each other as a whole by corresponding pads. The pads are provided with a number of corresponding vibration damping microholes arranged horizontally side by side.

[0019] The feeding pipe is fixedly equipped with a corresponding feeding valve, and the storage section is fixedly equipped with corresponding upper and lower level gauges according to their height.

[0020] A first dispersing plate located below the feeding pipe is fixed to the upper side of the storage section of the storage box. Several second dispersing plates are provided on the bottom side of the first dispersing plate for further dispersing the material discharged from the first dispersing plate. Both the first dispersing plate and the second dispersing plate are arranged in an inverted V shape.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0022] 1) The present invention adds a multi-functional material limiting component to the feeding mechanism, which includes an ultrasonic transducer fixedly inserted into the hollow part of the feeding roller. The ultrasonic transducer is set at an interval with the feeding roller and is connected to an external ultrasonic generator. The bottom of the feeding groove of the feeding roller is movably installed with corresponding transverse push rods. The upper part of the transverse push rods is fixedly connected with corresponding rubber pads. The periphery of the rubber pads is fixedly adhered to the feeding groove of the corresponding feeding roller, and multiple corresponding strip spring rods are fixedly connected upward to the rubber pads. Driven by the push-pull mechanism, when the transverse push rod rotates past its highest point, it moves inward to abut against the ultrasonic transducer, thereby effectively transmitting ultrasonic vibration to the tensioned rubber pad and strip spring rod to ultrasonically compact the material entering the feeding trough, thus effectively improving the density and uniformity of the powder material entering the feeding trough. When the transverse push rod rotates away from its highest point, it resets under the elastic force of the rubber pad to push the powder material, making it compact and pressed against the feeding part of the storage box, thus preventing significant leakage of powder material in the feeding trough and effectively preventing excessive mixing of powder material in two or more adjacent feeding troughs, thereby effectively achieving precise control of the powder supply.

[0023] 2) When the transverse push rod of the present invention rotates to its lowest position, it is driven inward again by the push-pull drive mechanism until it abuts against the ultrasonic transducer, thereby effectively transmitting the ultrasonic vibration back to the tensioned rubber pad and strip spring rod to ultrasonically vibrate the material in the feeding trough, causing the material in the feeding trough to be output in a loose state, thus effectively solving the problem of material clumping caused by the tight conveying of powder materials. Therefore, without affecting the smooth implementation of the feeding process, precise control of the powder supply can be effectively achieved.

[0024] 3) The push-pull drive mechanism of the present invention includes magnets installed at the upper and lower ends of the ultrasonic transducer. The transverse push rod is made of engineering plastic with excellent surface smoothness, which can effectively reduce the friction of the transverse push rod during continuous reciprocating movement. The inner end of the transverse push rod is fixedly installed with magnetic metal parts that are compatible with the magnets, so as to ensure that the transverse push rod can be effectively and smoothly driven when it rotates through the highest or lowest point, that is, when it rotates through the feed end and the discharge end, so as to effectively ensure the practical effect of the present invention.

[0025] 4) Multiple corresponding abutment balls are rolledly installed on both sides and the bottom of the transverse push rod of the present invention. The abutment balls on both sides of the transverse push rod are hollow and filled with a number of corresponding vibration damping particles. By further cooperating with the transverse push rod, the friction of the transverse push rod during continuous reciprocating movement is effectively and significantly reduced. The energy dissipation due to mutual friction between the vibration damping particles filled in the abutment balls is used to isolate and reduce the amount of ultrasonic vibration transmitted to the feeding roller, thereby reducing the adverse effects of ultrasonic vibration on the feeding process and further ensuring the practical effect of the present invention.

[0026] 5) An upper powder guide plate is fixedly installed inside the feeding section of the present invention for guiding material into the feeding trough of the feeding roller. Along the rotation direction of the feeding roller, the upper powder guide plate is located on the top front side of the feeding roller, and a corresponding guiding slope is provided on the rear side of the upper powder guide plate. Under the guidance of the guiding slope of the upper powder guide plate, the material is more concentrated and accumulated at the top of the feeding roller, thereby cooperating with the ultrasonic vibration environment in the feeding trough to allow the powder material to enter the feeding trough of the feeding roller more evenly.

[0027] 6) A lower powder guide plate for discharging material is fixedly installed inside the feeding section of the present invention. Along the rotation direction of the feeding roller, the lower powder guide plate is located at the front of the feeding roller. A corresponding pressing slope is provided on the rear side of the lower powder guide plate, and a corresponding comb tooth scraper is fixedly connected to the rear side of the lower powder guide plate at an upward inclination. The comb tooth scraper is made of spring steel, and its upper end extends into the feeding groove of the feeding roller and is staggered from the strip spring rod. The comb-tooth scraper effectively works in conjunction with the ultrasonic vibration environment within the feeding trough, allowing for more thorough discharge of the powder material. The comb-tooth scraper also generates sufficient vibration during its movement in and out of the feeding trough, which not only improves the loosening effect of the powder material but also guides any clumps of powder material to the junction of the comb-tooth scraper and the pressing slope of the lower guide plate. The vibrating comb-tooth scraper effectively works with the pressing slope of the lower guide plate to crush the clumps of powder material, thus effectively solving the problem of material clumping caused by the tight conveying of powder material.

[0028] 7) The ultrasonic transducer of the present invention extends through both ends to the outer side of the feeding roller and is fixedly connected to the storage section of the storage box via corresponding vibration damping connection components. These vibration damping connection components include fixing members installed in the storage section and at both ends of the ultrasonic transducer. The fixing members are connected as a whole by corresponding pads. Most importantly, each pad has numerous corresponding vibration damping micro-holes arranged horizontally and alternately. When ultrasonic vibration is transmitted through the vibration damping micro-holes, it can resonate with the micro-holes, effectively generating significant energy dissipation. This achieves the effect of isolating and reducing the transmission of ultrasonic vibration, thereby significantly reducing the outward transmission of ultrasonic vibration caused by the installation of the ultrasonic transducer, further reducing the adverse effects of ultrasonic vibration on the feeding process, and thus further effectively ensuring the practical effect of the present invention.

[0029] 8) A first dispersing plate located below the feeding pipe is fixedly connected to the upper side of the storage section of the storage box of the present invention. A plurality of second dispersing plates are provided on the bottom side of the first dispersing plate for further dispersing the material discharged from the first dispersing plate. Both the first and second dispersing plates are arranged in an inverted V shape. Under the action of the first and second dispersing plates, the cone shape formed by the powder material during its fall is effectively changed, making it fall more evenly into the powder storage box. Additionally, the impact of gravity on the powder material below during vertical fall can be reduced. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is a front view of the present invention.

[0032] Figure 3 This is a partial cross-sectional view of the present invention.

[0033] Figure 4 A schematic diagram of a material storage bin with a feeding roller installed in the feeding section.

[0034] Figure 5 This is an assembly diagram showing the ultrasonic transducer inserted into the hollow part of the feed roller.

[0035] Figure 6 This is an assembly diagram of a multifunctional material limiting component.

[0036] In the attached diagram: 1. Storage bin; 101. Storage section; 102. Feeding section; 2. Feeding pipe; 3. Discharge port; 4. Feeding mechanism; 401. Feeding roller; 4011. Feeding trough; 402. Drive mechanism; 5. Multifunctional material limiting component; 5. Ultrasonic transducer; 501. Transverse push rod; 502. Rubber pad; 503. Strip spring rod; 6. Push-pull drive mechanism; 7. Magnet; 701. Magnetic metal part; 702. Abutment ball; 8. Vibration damping particle; 9. Upper powder guide plate; 10. Guide slope; 1001. Lower powder guide plate; 11. Pressing slope; 1101. Comb scraper; 12. Vibration damping connection component; 13. Fixing part; 1301. Pad; 1302. Vibration damping micro-hole; 1303. Feeding valve; 14. Upper material level gauge; 15. Lower material level gauge; 16. First dispersing plate; 17. Second dispersing plate; 18. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] refer to Figure 1-6 A feeding device for additive manufacturing equipment, comprising:

[0039] The storage bin 1 includes a storage section 101 and a feeding section 102 arranged at different heights. The storage section 101 is connected to a corresponding feeding pipe 2, and the feeding section 102 has a corresponding discharge port 3 arranged laterally on its bottom side.

[0040] The feeding mechanism 4 includes a feeding roller 401 rotatably mounted on the upper side of the discharge port 3. The two sides of the feeding roller 401 are separated from the feeding part 102. The feeding roller 401 is hollow and is driven to rotate by a corresponding driving mechanism 402. The outer side wall of the feeding roller 401 is provided with a plurality of corresponding feeding grooves 4011 at equal angles.

[0041] The multifunctional material limiting component 5 includes an ultrasonic transducer 501 fixedly inserted into the hollow part of the feeding roller 401. The ultrasonic transducer 501 is spaced apart from the feeding roller 401 and connected to an external ultrasonic generator. The bottom of the feeding groove 4011 is movably mounted with corresponding transverse push rods 502. The upper part of the transverse push rods 502 is fixedly connected with corresponding rubber pads 503. The periphery of the rubber pads 503 is fixedly adhered to the feeding groove 4011 of the corresponding feeding roller 401. The rubber pads 503 are fixedly connected with multiple corresponding strip spring rods 6 upward.

[0042] When the transverse push rod 502 rotates past its highest or lowest position, the push-pull drive mechanism 7 drives the transverse push rod 502 to move inward until it abuts against the ultrasonic transducer 501, and the rubber pad 503 is pulled inward; when the transverse push rod 502 rotates away from its highest or lowest position, the push-pull drive mechanism 7 does not drive the transverse push rod 502, and the transverse push rod 502 returns to its original position under the elastic force of the rubber pad 503.

[0043] The present invention adds a multifunctional material limiting component 5 to the feeding mechanism 4. The component includes an ultrasonic transducer 501 fixedly inserted into the hollow part of the feeding roller 401. The ultrasonic transducer 501 is spaced apart from the feeding roller 401 and connected to an external ultrasonic generator. The bottom of the feeding groove 4011 of the feeding roller 401 is movably mounted with corresponding transverse push rods 502. The upper part of the transverse push rods 502 is fixedly attached with corresponding rubber pads 503. The periphery of the rubber pads 503 is fixedly adhered to the feeding groove 4011 of the corresponding feeding roller 401. The rubber pads 503 are fixedly attached upward with multiple corresponding strip spring rods 6. Driven by the push-pull drive mechanism 7, when the transverse push rod 502 rotates past its highest point, it moves inward to abut against the ultrasonic transducer 501, thereby effectively transmitting ultrasonic vibration to the tensioned rubber pad 503 and the strip spring rod 6 to ultrasonically vibrate the material entering the feeding trough 4011, thereby effectively improving the density and uniformity of the powder material entering the feeding trough 4011; when the transverse push rod 502 rotates away from its highest point, the transverse push rod 502 resets under the elastic force of the rubber pad 503 to push the powder material, making it compact and pressed against the feeding part 102 of the storage box 1, thereby preventing significant leakage of powder material in the feeding trough 4011, effectively preventing excessive mixing of powder material in two or more adjacent feeding troughs 4011, thereby effectively achieving precise control of powder supply.

[0044] When the transverse push rod 502 of the present invention rotates to its lowest position, it is driven inward again by the push-pull drive mechanism 7 until it abuts against the ultrasonic transducer 501. This effectively transmits the ultrasonic vibration back to the tensioned rubber pad 503 and the strip spring rod 6, thereby ultrasonically agitating the material in the feeding trough 4011. This results in the material being output in a loose state, effectively solving the problem of material clumping caused by the tight conveying of powdered materials. Thus, precise control of the powder supply is achieved without affecting the smooth implementation of the feeding process.

[0045] The push-pull drive mechanism 7 includes magnets 701 installed at the upper and lower ends of the ultrasonic transducer 501. The transverse push rod 502 is made of engineering plastic, and magnetic metal parts 702 adapted to the magnets 701 are fixedly installed at the inner ends of the transverse push rod 502.

[0046] Because it is made of engineering plastic, the surface of the transverse push rod 502 is extremely smooth, which can effectively reduce the friction of the transverse push rod 502 during continuous reciprocating movement. The inner ends of the transverse push rod 502 are respectively fixedly installed with magnetic metal parts 702 that are compatible with the magnet parts 701, so as to ensure that the transverse push rod 502 can be effectively and smoothly driven when rotating through the highest or lowest point, that is, when rotating through the feed end and the discharge end, so as to effectively ensure the practical effect of the present invention.

[0047] Multiple corresponding abutment balls 8 are rolled on both sides and the bottom of the transverse push rod 502. The abutment balls 8 on both sides of the transverse push rod 502 are hollow and filled with a number of corresponding vibration damping particles 9. The vibration damping particles 9 are spherical particles made of metal or polymer materials.

[0048] The abutting balls 8 located on both sides of the transverse push rod 502 further cooperate with the transverse push rod 502 to effectively and significantly reduce the friction of the transverse push rod 502 during continuous reciprocating movement. The energy dissipation through mutual friction between the damping particles 9 filled in the abutting balls 8 is used to isolate and reduce the amount of ultrasonic vibration transmitted to the feeding roller 401, thereby reducing the adverse effects of ultrasonic vibration on the feeding process and further ensuring the practical effect of the present invention.

[0049] An upper powder guide plate 10 is fixedly installed inside the feeding section 102 for guiding material into the feeding trough 4011 of the feeding roller 401. Along the rotation direction of the feeding roller 401, the upper powder guide plate 10 is located on the top front side of the feeding roller 401, and a corresponding guiding slope 1001 is provided on the rear side of the upper powder guide plate 10. Guided by the guiding slope 1001 of the upper powder guide plate 10, the material is more concentrated and accumulated at the top of the feeding roller 401, thereby cooperating with the ultrasonic vibration environment inside the feeding trough 4011, allowing the powder material to enter the feeding trough 4011 of the feeding roller 401 more evenly.

[0050] A lower guide plate 11 for discharging materials is fixedly installed inside the feeding section 102. Along the rotation direction of the feeding roller 401, the lower guide plate 11 is located at the front of the feeding roller 401. A corresponding pressing inclined surface 1101 is provided on the rear side of the lower guide plate 11, and a corresponding comb-tooth scraper 12 is fixedly connected to the rear side of the lower guide plate 11 at an upward inclination. The comb-tooth scraper 12 is made of spring steel, and its upper end extends into the feeding groove 4011 of the feeding roller 401 and is offset from the strip spring rod 6.

[0051] The comb-tooth scraper 12 effectively works in conjunction with the ultrasonic vibration environment within the feeding trough 4011, allowing the powder material to be discharged more fully. The comb-tooth scraper 12 also generates sufficient vibration during its movement in and out of the feeding trough 4011, which not only improves the loosening effect of the powder material but also guides clumps of powder material to the junction of the comb-tooth scraper 12 and the pressing slope 1101 of the lower powder guide plate 11. The vibrating comb-tooth scraper 12 effectively works with the pressing slope 1101 of the lower powder guide plate 11 to crush the clumps of powder material, thereby effectively solving the problem of material clumping caused by the tight conveying of powder material.

[0052] The drive mechanism 402 adopts a belt drive mechanism. The two ends of the ultrasonic transducer 501 extend through to the outside of the feeding roller 401 and are fixedly connected to the storage part 101 of the storage box 1 through the corresponding vibration damping connection assembly 13. The vibration damping connection assembly 13 includes fixing members 1301 installed on the storage part 101 and the two ends of the ultrasonic transducer 501. The fixing members 1301 are connected to each other as a whole by corresponding pads 1302. The pads 1302 are respectively arranged horizontally and alternately with a number of corresponding vibration damping micro holes 1303.

[0053] When ultrasonic vibration is transmitted through the damping micro-hole 1303, it can resonate with the damping micro-hole 1303, thereby effectively generating significant energy dissipation, achieving the effect of isolating and reducing the transmission of ultrasonic vibration, thus significantly reducing the outward transmission of ultrasonic vibration caused by the installation of ultrasonic transducer 501, further reducing the adverse effects of ultrasonic vibration on the feeding process, and thus further effectively ensuring the practical effect of the present invention.

[0054] A corresponding feeding valve 14 is fixedly installed on the feeding pipe 2, and a corresponding upper material level gauge 15 and lower material level gauge 16 are fixedly installed in the storage section 101 according to their height.

[0055] A first dispersing plate 17 is fixedly connected to the upper side of the storage section 101 of the storage bin 1, located below the feeding pipe 2. Several second dispersing plates 18 are provided on the bottom side of the first dispersing plate 17 for further dispersing the material discharged from the first dispersing plate 17. Both the first dispersing plate 17 and the second dispersing plate 18 are arranged in an inverted V shape. Under the action of the first dispersing plate 17 and the second dispersing plate 18, the cone shape formed by the powder material during its fall is effectively changed, making it fall more evenly into the powder storage bin 1. Additionally, the impact of gravity on the powder material below during vertical fall can be reduced.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A feeding device for additive manufacturing equipment, characterized in that, include: The storage bin (1) includes a storage section (101) and a feeding section (102) arranged at different heights. The storage section (101) is connected to a corresponding feeding pipe (2) and the feeding section (102) is provided with a corresponding discharge port (3) on the bottom side. The feeding mechanism (4) includes a feeding roller (401) rotatably mounted on the upper side of the discharge port (3). The two sides of the feeding roller (401) are separated from the feeding part (102). The feeding roller (401) is hollow and is driven to rotate by a corresponding driving mechanism (402). The outer side wall of the feeding roller (401) is provided with a plurality of corresponding feeding grooves (4011) at equal angles. The multifunctional material limiting component (5) includes an ultrasonic transducer (501) fixedly inserted into the hollow part of the feeding roller (401). The ultrasonic transducer (501) is set at an interval from the feeding roller (401) and connected to an external ultrasonic generator. The bottom of the feeding groove (4011) is movably mounted with corresponding transverse push rods (502). The upper part of the transverse push rods (502) is fixedly connected with corresponding rubber pads (503). The periphery of the rubber pads (503) is fixedly bonded to the feeding groove (4011) of the corresponding feeding roller (401). The rubber pads (503) are fixedly connected with multiple corresponding strip spring rods (6) upward. When the transverse push rod (502) rotates past the highest or lowest position, the push-pull drive mechanism (7) drives the transverse push rod (502) to move inward until it abuts against the ultrasonic transducer (501), and the rubber pad (503) is pulled inward; when the transverse push rod (502) rotates away from the highest or lowest position, the push-pull drive mechanism (7) does not drive the transverse push rod (502), and the transverse push rod (502) resets under the elastic force of the rubber pad (503).

2. The feeding device for additive manufacturing equipment according to claim 1, characterized in that, The push-pull drive mechanism (7) includes magnets (701) installed at the upper and lower ends of the ultrasonic transducer (501). The transverse push rod (502) is made of engineering plastic. The inner ends of the transverse push rod (502) are respectively fixedly installed with magnetic metal parts (702) that are compatible with the magnets (701).

3. The feeding device for additive manufacturing equipment according to claim 2, characterized in that, Multiple corresponding abutting balls (8) are rolled on both sides and the bottom of the transverse push rod (502). The abutting balls (8) on both sides of the transverse push rod (502) are hollow and filled with many corresponding vibration damping particles (9).

4. The feeding device for additive manufacturing equipment according to claim 3, characterized in that, The damping particles (9) are spherical particles made of metal or polymer materials.

5. The feeding device for additive manufacturing equipment according to claim 1, characterized in that, An upper powder guide plate (10) for guiding material into the feeding trough (4011) of the feeding roller (401) is fixedly installed in the feeding part (102). Along the rotation direction of the feeding roller (401), the upper powder guide plate (10) is located on the front side of the top of the feeding roller (401), and a corresponding guiding slope (1001) is provided on the rear side of the upper powder guide plate (10).

6. A feeding device for additive manufacturing equipment according to claim 5, characterized in that, A lower powder guide plate (11) for discharging material is fixedly installed inside the feeding part (102). Along the rotation direction of the feeding roller (401), the lower powder guide plate (11) is located at the front of the feeding roller (401). A corresponding pressing inclined surface (1101) is provided on the rear side of the lower powder guide plate (11), and a corresponding comb tooth scraper (12) is fixedly connected to the rear side of the lower powder guide plate (11) at an upward inclination.

7. A feeding device for additive manufacturing equipment according to claim 6, characterized in that, The comb-tooth scraper (12) is made of spring steel. The upper end of the comb-tooth scraper (12) extends into the feeding groove (4011) of the feeding roller (401) and is offset from the strip spring rod (6).

8. A feeding device for additive manufacturing equipment according to claim 1, characterized in that, The drive mechanism (402) adopts a belt drive mechanism. The two ends of the ultrasonic transducer (501) extend through to the outside of the feeding roller (401) and are fixedly connected to the storage part (101) of the storage box (1) through the corresponding vibration damping connection assembly (13). The vibration damping connection assembly (13) includes fixing members (1301) installed on the storage part (101) and the two ends of the ultrasonic transducer (501). The fixing members (1301) are connected to each other as a whole through corresponding pads (1302). The pads (1302) are respectively arranged horizontally and alternately with a number of corresponding vibration damping micro holes (1303).

9. A feeding device for additive manufacturing equipment according to claim 1, characterized in that, The feeding pipe (2) is fixedly installed with a corresponding feeding valve (14), and the storage section (101) is fixedly installed with corresponding upper material level gauge (15) and lower material level gauge (16) according to their height.

10. A feeding device for additive manufacturing equipment according to claim 1, characterized in that, The storage section (101) of the storage box (1) is fixedly connected to a first dispersing plate (17) located below the feeding pipe (2). The bottom side of the first dispersing plate (17) is provided with a plurality of second dispersing plates (18) for dispersing the material discharged from the first dispersing plate (17) again. Both the first dispersing plate (17) and the second dispersing plate (18) are arranged in an inverted V shape.

Images