CN114932078A - Metal powder screening plant that 3D printed - Google Patents

Metal powder screening plant that 3D printed Download PDF

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Publication number
CN114932078A
CN114932078A CN202210623933.0A CN202210623933A CN114932078A CN 114932078 A CN114932078 A CN 114932078A CN 202210623933 A CN202210623933 A CN 202210623933A CN 114932078 A CN114932078 A CN 114932078A
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China
Prior art keywords
plate
metal powder
fixing frame
fixed
piston
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Granted
Application number
CN202210623933.0A
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Chinese (zh)
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CN114932078B (en
Inventor
钟韬
伍贤洪
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Nanning College for Vocational Technology
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Nanning College for Vocational Technology
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Priority to CN202210623933.0A priority Critical patent/CN114932078B/en
Publication of CN114932078A publication Critical patent/CN114932078A/en
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Publication of CN114932078B publication Critical patent/CN114932078B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00Methods preventing fouling
    • B08B17/02Preventing deposition of fouling or of dust
    • B08B17/04Preventing deposition of fouling or of dust by using removable coverings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00Component parts, details or accessories for large containers
    • B65D90/54Gates or closures
    • B65D90/62Gates or closures having closure members movable out of the plane of the opening
    • B65D90/623Gates or closures having closure members movable out of the plane of the opening having a rotational motion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/02Filling storage spaces as completely as possible, e.g. application of vibrators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention relates to the technical field of 3D printing metal powder screening, in particular to a 3D printing metal powder screening device which comprises a fixing frame, wherein a material storage mechanism for storing raw materials is installed on the fixing frame, a screening machine is installed on the fixing frame, a collecting mechanism for collecting screened metal powder is installed on the fixing frame, a driving mechanism for vibrating the collecting mechanism is installed on the fixing frame, a power mechanism connected with the driving mechanism is installed on the fixing frame, a transmission mechanism positioned at the top of the power mechanism is installed on the fixing frame, and the transmission mechanism is connected with a control mechanism; actuating mechanism on the mount drives the vibration of collection mechanism in the operation, has realized rocking the metal powder of collecting the screening completion of mechanism's inside collection, avoids collecting the fluffy volume waste that leads to the fact of piling up of the metal powder of mechanism inside, and collects the mechanism and can avoid storage container to rock noise abatement through powder gravity centre gripping placing self.

Description

Metal powder screening plant that 3D printed
Technical Field
The invention relates to the technical field of 3D printing metal powder screening, in particular to a 3D printing metal powder screening device.
Background
3D prints one kind of quick forming technique promptly, also known as vibration material disk, it is one kind and uses digital model file as the basis, but the technique of adhesive material such as powdered metal or plastics, constructs the object through the mode of printing layer by layer, and the main raw materials that 3D printed so is metal powder, and metal powder need sieve the powder through the screening plant before producing the product, and main effect is exactly to avoid metal powder size to lead to the fact to have honeycomb holes on the printing product.
However, when the existing 3D printed metal powder is sieved, the powder is directly poured onto the screen at the top layer of the sieving machine, and because the precision of the screen of the sieving machine is high, and more metal powder is poured at one time or continuously, the gravity is high, the powder is easy to damage the screen at the topmost layer of the sieving machine, and the sieving of the powder is affected; when the raw material storage tank is replaced, the connecting pipe connected between the storage tank and the sieving machine is in a hollow state, dust and impurities easily enter the connecting pipe during the period and fall onto the sieve, and the sieve is blocked; the metal powder that the screening was accomplished is collected by the holding vessel, and the metal powder that drops by the unloading pipe is the toper sand heap in the inside of holding vessel and piles up, causes the metal powder fluffy in the holding vessel, influences jar body to the storage capacity of metal powder.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a metal powder screening device for 3D printing.
The technical scheme adopted by the invention for solving the technical problems is as follows: a metal powder screening device for 3D printing comprises a fixing frame, wherein a storage mechanism for storing raw materials is installed on the fixing frame, a screening machine is installed on the fixing frame, a control mechanism for communicating the storage mechanism with the screening machine is installed on the fixing frame, a dustproof mechanism for preventing dust of the control mechanism is installed on the fixing frame, a collecting mechanism for collecting screened metal powder is installed on the fixing frame, a driving mechanism for vibrating the collecting mechanism is installed on the fixing frame, a power mechanism connected with the driving mechanism is installed on the fixing frame, a transmission mechanism located at the top of the power mechanism is installed on the fixing frame, and the transmission mechanism is connected with the control mechanism;
the control mechanism comprises a second mounting plate, the second mounting plate is fixed on the fixing frame, a connecting cylinder is fixedly connected on the second mounting plate, the inside of the connecting cylinder is rotatably connected with a sealing plate through a rotating shaft, a torsional spring is clamped between the rotating shaft and the connecting cylinder, a gear is fixedly connected on the rotating shaft penetrating through one end of the connecting cylinder, the connecting cylinder is connected with the sieving machine through a hose, the power mechanism comprises an inflator, the fixing frame is provided with an air box, the air box is connected with the inflator through an air pipe with a one-way valve, the inside of the air box is slidably connected with a piston, the piston is provided with a communicating groove, the piston is provided with a jack positioned outside the communicating groove, the piston is provided with a sealing plug for sealing the communicating groove and the jack, and the top of the air box is fixedly provided with a pressure shell with a hole corresponding to the jack through a top frame, the interior bottom of gas tank is fixed with the conflict seat that corresponds with the piston, the centre gripping has the inner spring between piston and the gas tank, drive mechanism includes spacing seat, the inner wall of mount is fixed with spacing seat, sliding connection has the slide on the spacing seat, the one end of slide extends to on the gas tank, the centre gripping has the fourth spring between slide and the spacing seat, the lateral wall of slide is equipped with the rack.
Specifically, the cross section of the sliding plate is in a cross-shaped structure, and the distance from the bottom of the sliding plate to the piston is equal to the distance from the gear to the rack.
Specifically, the power mechanism further comprises a filter screen and a connecting rod, the filter screen positioned in the communicating groove is fixed on the piston, and the connecting rod which is fixed with the top of the sealing plug and has a T-shaped section is arranged on the filter screen in a sliding mode.
Specifically, the sealing plug is of a round platform-shaped structure, an arc-shaped groove is formed in the bottom of the sealing plug, and the length of the abutting seat is larger than the diameter of the sealing plug.
Specifically, actuating mechanism includes the motor, the carousel is installed through the shaft coupling to the output of motor, the eccentric center is fixed with eccentric post on the carousel, the cover is equipped with the push pedal of seting up waist type groove on the eccentric post, two swinging arms of the relative fixedly connected with in both sides of push pedal, two interior seats of fixedly connected with on the mount, sliding connection between swinging arm and the interior seat, one of them swinging arm is connected with the inflater.
Specifically, collect the mechanism including placing the board, there is the board to place the bottom of mount through draw runner sliding connection, place on the board relative sliding connection have two pressure framves, the top of pressure frame is "L" shape structure, press the frame and place and hold the third spring between the board, place on the board relative sliding connection have two splint that have the lateral wall slope to set up, the edges and corners of pressure frame contradict with the lateral wall of splint, place and hold the second spring between board and the splint, place and placed the collecting vessel on the board that the cross-section is "U" font structure, the collecting vessel contradicts with the pressure frame, the collecting vessel contradicts with splint, through hose connection between collecting vessel and the screening machine, another the tip of swinging arms is fixed with placing the board.
Specifically, the thickness of the clamping plate is smaller than that of the placing plate, and the inner wall of the clamping plate is of an inverted L-shaped structure.
Specifically, storage mechanism includes the fixed plate, fixedly connected with fixed plate on the mount, be fixed with on the fixed plate and place the seat, place and placed the storage tank on the seat, the bottom of storage tank is fixed with the discharging pipe that extends to the connecting cylinder inside, install the valve on the discharging pipe.
Specifically, dustproof mechanism includes first mounting panel, it is connected with the bull stick to rotate on the first mounting panel, be fixed with the guard plate sealed to the connecting cylinder on the bull stick, the lateral wall of bull stick is the spiral and has seted up the walking groove, the fixed plate, place and slide on the seat and have the depression bar, the centre gripping has first spring between depression bar and the fixed plate, rotate on the depression bar have with the rolling roller bearing of walking groove.
Specifically, dustproof mechanism still includes the arch, the bottom of storage tank is fixed with the arch that is the arc structure, contradicts with the depression bar.
The beneficial effects of the invention are:
(1) according to the 3D printed metal powder screening device, the driving mechanism on the fixing frame drives the collecting mechanism to vibrate when the driving mechanism operates, so that screened metal powder collected in the collecting mechanism is shaken, the phenomenon that the metal powder in the collecting mechanism is fluffy and accumulated to cause volume waste is avoided, the collecting mechanism can be clamped by the powder gravity when being placed, the shaking of the containing container is avoided, and the noise is reduced; namely: before the metal powder is screened, the collecting barrel is placed on the placing plate, so that the phenomenon that powder is splashed and wasted due to the fact that the powder is fed too fast during screening is avoided, when the collecting barrel is placed, the two pressing frames are extruded due to the self gravity, the two third springs are contracted, further, the outer sides of the two clamping plates are obliquely arranged, when the pressing frames are descended, the clamping plates are abutted, at the moment, the two clamping plates move relatively to clamp the collecting barrel, the second spring is contracted, the collecting barrel is prevented from inclining during vibration, noise is reduced, further, a motor is connected with a power supply, the shaft coupling drives the rotary disc to rotate, further, the eccentric column drives the push plate to swing in a reciprocating mode, the inner seat limits the swing rod, so that one swing rod vibrates the placing plate in a reciprocating mode, the placing plate slides on the fixing frame through the sliding strips, further, the collecting barrel is prevented from being piled into a conical sand pile when the screened powder is collected, avoiding the stacking and fluffing.
(2) According to the 3D printed metal powder screening device, the driving mechanism drives the collecting mechanism to vibrate and simultaneously pushes and pulls the power mechanism to and fro to realize inflation, when the internal gas of the power mechanism rises, the driving mechanism is pushed to slowly turn over a sealing part of the control mechanism, slow blanking is realized, the situation that the screening plate of the screening machine is damaged due to excessive or continuous blanking at one time is avoided, when the power mechanism rises to a certain degree, the control mechanism is closed, the driving mechanism provides power for the power mechanism again, and intermittent blanking is realized; namely: when the motor drives the turntable to rotate, the other oscillating rod pulls the inflator in a reciprocating manner, because the air pipe is provided with the one-way valve, the gas discharged by the inflator is filled into the air box (positioned between the piston and the bottom of the air box), the one-way valve can control the internal gas of the air box not to be discharged, along with the increasing of the internal gas of the air box, the piston rises, and because the internal air pressure of the air box is higher, the sealing plug positioned on the communicating groove at the piston is extruded and cannot fall off, at the moment, the communicating groove and the jack are sealed, the contact area between the gas and the sealing plug is increased by the groove at the bottom of the sealing plug, the sealing effect is enhanced, the piston is butted against the sliding plate along with the rising of the piston, the sliding plate rises, the fourth spring contracts, after the sliding plate rises to a certain position, the rack is meshed with the gear on the rotating shaft, the gear rotates, and further, the sealing plate on the rotating shaft is slowly opened, realize slow hourglass material, after the piston rises the certain distance, the jack removes to pressure shell department, the sealing plug contradicts with the pressure shell, the sealing plug gliding this moment then, sealing plug and jack are followed to the inside gas of gas tank, discharge between the intercommunication groove, the piston is reset by the internal spring, the sealing plug contradicts with the seat of contradicting, it is sealed to the intercommunication groove once more to have realized, after the piston resets, the slide also resets, the fourth spring opens, and then rack and gear separation, the closing plate is reset by the torsional spring so, the sealing of connecting cylinder has been realized, aerify the gas tank once more according to this kind of method and realized the opening and shutting of intermittent type nature to the closing plate, intermittent type nature unloading, avoid causing the sieve damage on the sieve on the direct a large amount of pouring of metal powder sieve on the screening machine.
(3) According to the 3D printed metal powder screening device, the storage mechanism is not communicated with the control mechanism any more and is not abutted against the dustproof mechanism when the storage raw materials are replaced, and the dustproof mechanism is reset to seal the top of the control mechanism, so that dust and sundries are prevented from entering the control mechanism, and a screen plate of the screening machine is protected; namely: when the D-printed metal powder is screened, the storage tank is lifted to the placing seat through a forklift, when the storage tank is placed, a pressure rod on a fixed plate is abutted to a protrusion before a discharge pipe is inserted into the connecting cylinder, the pressure rod slides in a direction deviating from the fixed plate, a first spring opens, a roller runs in the rotating rod when the pressure rod slides downwards, due to extrusion of the pressure rod, the roller drives the rotating rod to rotate when descending, at the moment, a protection plate on the rotating rod is separated from the connecting cylinder and does not block the connecting cylinder any more, when the pressure rod continues to descend, the discharge pipe is inserted into the connecting cylinder, a valve is opened, a screening machine is started, leaked screening is realized, thinner metal powder flows into the collecting cylinder, larger metal powder is discharged from one side of the screening machine, when the storage tank is replaced, the storage tank is separated from the placing seat, at the moment, the pressure rod resets, so first spring shrink has then realized that the roller bearing drives the bull stick and resets, and the guard plate is sealed to the connecting cylinder this moment, avoids debris to enter into the sieve that the inside influence screening machine of connecting cylinder avoided influencing the screening.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic overall structure diagram of a preferred embodiment of a 3D printed metal powder screening device provided by the present invention;
FIG. 2 is an enlarged view of the part A shown in FIG. 1;
FIG. 3 is an enlarged view of the structure of the portion B shown in FIG. 1;
FIG. 4 is a schematic view of the connection structure of the fixing frame, the fixing plate, the placing seat, the material storage tank, the first mounting plate, the rotating rod, the second mounting plate, the connecting cylinder, the material discharging pipe, the valve and the sliding plate according to the present invention;
FIG. 5 is an enlarged view of the structure of the portion C shown in FIG. 4;
FIG. 6 is an enlarged view of the structure of the portion D shown in FIG. 4;
FIG. 7 is a schematic view of a connection structure of a fixing frame, a placing plate, a clamping plate, a pressing frame, a sliding plate, a fourth spring, a limiting seat, an air tank, an inner spring, an air pipe and an inflator;
FIG. 8 is an enlarged view of the structure of the section E shown in FIG. 7;
fig. 9 is an enlarged view of the structure of the portion F shown in fig. 7.
In the figure: 1. a fixed mount; 2. a material storage mechanism; 201. a fixing plate; 202. a placing seat; 203. a material storage tank; 204. a discharge pipe; 205. a valve; 3. a dust-proof mechanism; 301. a first mounting plate; 302. a rotating rod; 303. a protection plate; 304. a traveling groove; 305. a pressure lever; 306. a roller; 307. a first spring; 308. a protrusion; 4. a control mechanism; 401. a second mounting plate; 402. a connecting cylinder; 403. a rotating shaft; 404. a gear; 405. a torsion spring; 406. sealing plates; 5. a collection mechanism; 501. a collection barrel; 502. placing a plate; 503. a slide bar; 504. pressing a frame; 505. a splint; 506. a second spring; 507. a third spring; 6. a transmission mechanism; 601. a slide plate; 602. a rack; 603. a limiting seat; 604. a fourth spring; 7. a power mechanism; 701. a gas tank; 702. a contact base; 703. an inner spring; 704. an air tube; 705. an inflator; 706. a jack; 707. a communicating groove; 708. filtering with a screen; 709. a sealing plug; 710. a top frame; 711. pressing the shell; 712. a piston; 713. a connecting rod; 8. a drive mechanism; 801. a motor; 802. a turntable; 803. pushing the plate; 804. an eccentric column; 805. an inner seat; 806. a swing lever; 9. provided is a screening machine.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 9, the metal powder screening device for 3D printing according to the present invention includes a fixing frame 1, a storage mechanism 2 for storing raw materials is installed on the fixing frame 1, a screening machine 9 is installed on the fixing frame 1, a control mechanism 4 for communicating the storage mechanism 2 with the screening machine 9 is installed on the fixing frame 1, a dustproof mechanism 3 for preventing dust from being applied to the control mechanism 4 is installed on the fixing frame 1, a collecting mechanism 5 for collecting screened metal powder is installed on the fixing frame 1, a driving mechanism 8 for vibrating the collecting mechanism 5 is installed on the fixing frame 1, a power mechanism 7 connected to the driving mechanism 8 is installed on the fixing frame 1, a transmission mechanism 6 located at the top of the power mechanism 7 is installed on the fixing frame 1, and the transmission mechanism 6 is connected to the control mechanism 4;
the control mechanism 4 comprises a second mounting plate 401, the second mounting plate 401 is fixed on the fixing frame 1, a connecting cylinder 402 is fixedly connected on the second mounting plate 401, a sealing plate 406 is rotatably connected inside the connecting cylinder 402 through a rotating shaft 403, a torsion spring 405 is clamped between the rotating shaft 403 and the connecting cylinder 402, a gear 404 is fixedly connected on the rotating shaft 403 penetrating one end of the connecting cylinder 402, the connecting cylinder 402 is connected with the sieving machine 9 through a hose, the power mechanism 7 comprises a pump 705, a pump 705 is mounted on the fixing frame 1, a pump air tank 701 is mounted on the fixing frame 1, the air tanks 701 and 705 are connected through an air pipe 704 with a one-way valve, a piston 712 is slidably connected inside the air tank 701, a communicating groove 707 is formed in the piston 712, and a jack 706 located outside the communicating groove 707 is formed in the piston 712, a sealing plug 709 which is sealed with a communication groove 707 and a jack 706 is arranged on the piston 712, a perforated pressure shell 711 corresponding to the jack 706 is fixed on the top of the air box 701 through a top frame 710, an abutting seat 702 corresponding to the piston 712 is fixed on the inner bottom of the air box 701, an inner spring 703 is clamped between the piston 712 and the air box 701, the power mechanism 7 further comprises a filter screen 708 and a connecting rod 713, the filter screen 708 positioned in the communication groove 707 is fixed on the piston 712, the connecting rod 713 which is fixed on the top of the sealing plug 709 and has a T-shaped cross section is slidingly arranged on the filter screen 708, the sealing plug 709 is in a circular truncated cone shape, an arc-shaped groove is arranged at the bottom of the sealing plug 709, the length of the abutting seat 702 is greater than the diameter of the sealing plug 709, the transmission mechanism 6 comprises a limiting seat 603, a limiting seat 603 is fixed on the inner wall of the fixing frame 1, and a sliding plate 601 is slidingly connected on the limiting seat 603, one end of the sliding plate 601 extends to the air box 701, a fourth spring 604 is clamped between the sliding plate 601 and the limiting seat 603, a rack 602 is arranged on the side wall of the sliding plate 601, the cross section of the sliding plate 601 is in a cross-shaped structure, and the distance from the bottom of the sliding plate 601 to the piston 712 is equal to the distance from the gear 404 to the rack 602; when the motor 801 drives the rotating disc 802 to rotate, the other swing rod 806 reciprocally pulls the inflator 705, because the air pipe 704 is provided with a one-way valve, the air discharged from the inflator 705 is inflated to the inside of the air tank 701 (between the piston 712 and the bottom of the air tank 701), the one-way valve can control the air inside the air tank 701 not to be discharged, as the air inside the air tank 701 is more and more, the piston 712 rises, and as the air inside the air tank 701 is higher, the sealing plug 709 on the communication groove 707 at the piston 712 is pressed and does not fall off, at this time, the communication groove 707 and the insertion hole 706 are sealed, the groove at the bottom of the sealing plug 709 increases the contact area of the air and the sealing plug 709, the sealing effect is enhanced, as the piston 712 rises to collide against the sliding plate 601, after the sliding plate 601 ascends to a certain position, the fourth spring 604 contracts, after the sliding plate 601 ascends to a certain position, the rack 602 is engaged with the gear 404 on the rotating shaft 403, the gear 404 rotates, the sealing plate 406 on the rotating shaft 403 is slowly opened, slow material leakage is realized, after the piston 712 ascends to a certain distance, the insertion hole 706 moves to the pressing shell 711, the sealing plug 709 is abutted against the pressing shell 711, at this time, the sealing plug 709 slides downwards, then the gas in the gas box 701 is discharged from between the sealing plug 709 and the insertion hole 706 and the communication groove 707, the piston 712 is reset by the inner spring 703, the sealing plug 709 is abutted against the contact seat 702, the communication groove 707 is sealed again, after the piston 712 resets, the sliding plate 601 also resets, the fourth spring 604 expands, and then the rack 602 is separated from the gear 404, so that the sealing plate 406 is reset by the torsion spring 405, the sealing of the connecting cylinder 402 is realized, and the inflator 705 inflates the air box 701 again according to the method, so that the sealing plate 406 is opened and closed intermittently, and intermittent blanking is realized, and the damage of a sieve plate caused by directly pouring a large amount of metal powder onto the sieve plate on the sieving machine 9 is avoided.
Specifically, the driving mechanism 8 includes a motor 801, a turntable 802 is mounted at an output end of the motor 801 through a coupling, an eccentric column 804 is eccentrically fixed on the turntable 802, a push plate 803 provided with a waist-shaped groove is sleeved on the eccentric column 804, two swing rods 806 are relatively and fixedly connected to two sides of the push plate 803, two inner seats 805 are fixedly connected to the fixed frame 1, the swing rods 806 are slidably connected to the inner seats 805, and one swing rod 806 is connected to the inflator 705; the collecting mechanism 5 comprises a placing plate 502, the bottom of the fixing frame 1 is connected with the placing plate 502 in a sliding mode through a sliding strip 503, the placing plate 502 is connected with two pressing frames 504 in a sliding mode relatively, the top of each pressing frame 504 is in an inverted L-shaped structure, a third spring 507 is clamped between each pressing frame 504 and the placing plate 502, the placing plate 502 is connected with two clamping plates 505 with outer side walls arranged obliquely in a sliding mode relatively, edges of the pressing frames 504 are abutted to the outer side walls of the clamping plates 505, a second spring 506 is clamped between each placing plate 502 and the corresponding clamping plate 505, a collecting barrel 501 is placed on the placing plate 502 with the U-shaped cross section structure, the collecting barrel 501 is abutted to the pressing frames 504, the collecting barrel 501 is abutted to the clamping plates 505, the collecting barrel 501 is connected with the screening machine 9 through a hose, and the end of the other swinging rod 806 is fixed to the placing plate 502; the thickness of the clamping plate 505 is smaller than that of the placing plate 502, and the inner wall of the clamping plate 505 is of an inverted L-shaped structure; before metal powder is sieved, the collecting barrel 501 is placed on the placing plate 502, powder splashing waste caused by too fast blanking during sieving is avoided, when the collecting barrel 501 is placed, the two pressing frames 504 are extruded due to self gravity, the two third springs 507 are contracted, further, the outer sides of the two clamping plates 505 are obliquely arranged, when the pressing frames 504 descend, the clamping plates 505 are abutted, at the moment, the two clamping plates 505 move relatively to clamp the collecting barrel 501, the second springs 506 are contracted, the collecting barrel 501 is prevented from inclining during vibration, noise is reduced, further, the motor 801 is powered on, a coupler is enabled to drive the rotary disc 802 to rotate, the eccentric column 804 drives the push plate 803 to swing back and forth, and as the inner seat 805 limits the swing rod 806, one of the swinging rods 806 vibrates the placing plate 502 back and forth, and the placing plate 502 slides on the fixing frame 1 through the slide bars 503, so that the collecting barrel 501 is prevented from piling up in a conical sand pile shape when the screened powder is collected, and the piling up is prevented from being fluffy.
Specifically, the storage mechanism 2 comprises a fixing plate 201, the fixing plate 201 is fixedly connected to the fixing frame 1, a placing seat 202 is fixed to the fixing plate 201, a storage tank 203 is placed on the placing seat 202, a discharge pipe 204 extending into the connecting cylinder 402 is fixed to the bottom of the storage tank 203, and a valve 205 is installed on the discharge pipe 204; the dustproof mechanism 3 comprises a first mounting plate 301, a rotating rod 302 is rotatably connected to the first mounting plate 301, a protection plate 303 for sealing a connecting cylinder 402 is fixed on the rotating rod 302, a walking groove 304 is spirally formed in the side wall of the rotating rod 302, a pressure lever 305 is slidably arranged on the fixing plate 201 and the placing seat 202, a first spring 307 is clamped between the pressure lever 305 and the fixing plate 201, and a rolling shaft 306 which rolls with the walking groove 304 is rotatably arranged on the pressure lever 305; the dustproof mechanism 3 further comprises a bulge 308, and the bottom of the storage tank 203 is fixed with the bulge 308 which is of an arc structure and is abutted against the pressure rod 305; when the 3D printed metal powder is sieved, the storage tank 203 is lifted to the placing base 202 through a forklift, when the storage tank 203 is placed, the pressing rod 305 on the fixing plate 201 abuts against the protrusion 308 before the discharging pipe 204 is inserted into the connecting cylinder 402, the pressing rod 305 slides in a direction away from the fixing plate 201, the first spring 307 is expanded, the roller 306 runs inside the rotating rod 302 when the pressing rod 305 slides downwards, due to the extrusion of the pressing rod 305, the roller 306 drives the rotating rod 302 to rotate when descending, at the moment, the protection plate 303 on the rotating rod 302 is separated from the connecting cylinder 402 and does not block the connecting cylinder 402 any more, when the pressing rod 305 continues descending, the discharging pipe 204 is inserted into the connecting cylinder 402 to open the valve 205, start screening machine 9 realizes leaking the material screening, and thinner metal powder flows to the inside of collecting vessel 501, great metal powder is followed one side discharge of screening machine 9 is changed when the storage tank 203, the storage tank 203 with place the separation of seat 202, depression bar 305 resets this moment, so first spring 307 shrink, and then has realized roller bearing 306 drives bull stick 302 resets, this moment the guard plate 303 is right connecting cylinder 402 is sealed, avoids debris to enter into the inside influence of connecting cylinder 402 the sieve of screening machine 9 avoids influencing the screening.
When the invention is used, firstly, before metal powder is sieved, the collecting barrel 501 is placed on the placing plate 502, powder splashing waste caused by too fast material discharging during sieving is avoided, when 3D printed metal powder is sieved, the material storage tank 203 is lifted to the placing seat 202 through a forklift, when the material storage tank 203 is placed, the pressure rod 305 on the fixing plate 201 is abutted against the bulge 308 before the material discharging pipe 204 is inserted into the connecting barrel 402, the pressure rod 305 slides in the direction deviating from the fixing plate 201, the first spring 307 is opened, when the pressure rod 305 slides downwards, the roller 306 runs in the rotating rod 302, due to the extrusion of the pressure rod 305, the roller 306 drives the rotating rod 302 to rotate when descending, at the moment, the protection plate 303 on the rotating rod 302 is separated from the connecting barrel 402 and does not block the connecting barrel 402 any more, when the pressure rod 305 continues descending, the material discharging pipe 204 is inserted into the connecting barrel 402, the valve 205 is opened, the sieving machine 9 is started to realize leaking sieving, thinner metal powder flows into the collecting barrel 501, larger metal powder is discharged from one side of the sieving machine 9, when the storage tank 203 is replaced, the storage tank 203 is separated from the placing seat 202, the pressing rod 305 resets at the moment, the first spring 307 contracts, the rolling shaft 306 drives the rotating rod 302 to reset, the protection plate 303 seals the connecting barrel 402 at the moment, sundries are prevented from entering the connecting barrel 402 to influence a sieve plate of the sieving machine 9, and influence on sieving is avoided; then, when the collecting barrel 501 is placed, the two pressing frames 504 are pressed by the self-gravity, the two third springs 507 are contracted, further, the outer sides of the two clamping plates 505 are arranged obliquely, when the pressing frame 504 descends, the two clamping plates 505 are abutted, the two clamping plates 505 move relatively to clamp the collecting barrel 501, the second spring 506 contracts to prevent the collecting barrel 501 from inclining when vibrating, meanwhile, the noise is reduced, further, the motor 801 is connected with a power supply, the shaft coupling drives the rotating disc 802 to rotate, further the eccentric column 804 drives the push plate 803 to swing back and forth, since the inner seat 805 limits the swing rods 806, it is achieved that one of the swing rods 806 vibrates reciprocally against the placing plate 502, and the placing plate 502 slides on the fixing frame 1 via the slide bars 503, further, the collecting barrel 501 is prevented from being piled into a conical sand pile when the screened powder is collected, and the piling is prevented from being fluffy; finally, when the motor 801 drives the turntable 802 to rotate, another swing rod 806 reciprocally pulls the inflator 705, because the air pipe 704 is provided with a one-way valve, the air discharged from the inflator 705 is inflated into the air tank 701 (between the piston 712 and the bottom of the air tank 701), the one-way valve can control the air in the air tank 701 not to be discharged, as the air in the air tank 701 increases, the piston 712 rises, and as the air pressure in the air tank 701 is higher, the sealing plug 709 on the communicating groove 707 in the piston 712 is pressed and does not fall off, at this time, the communicating groove 707 and the insertion hole 706 are sealed, the contact area between the air and the sealing plug 709 is increased by the groove in the bottom of the sealing plug 707, the sealing effect is enhanced, as the rising piston 712 of the piston 712 collides with the sliding plate 601, the sliding plate 601 rises, the fourth spring 604 contracts, when the sliding plate 601 rises to a certain position, the rack 602 is meshed with the gear 404 on the rotating shaft 403, the gear 404 rotates, so that the sealing plate 406 on the rotating shaft 403 is slowly opened, the slow material leakage is realized, after the piston 712 rises for a certain distance, the insertion hole 706 moves towards the pressing shell 711, the sealing plug 709 abuts against the pressing shell 711, the sealing plug 709 slides downwards at the moment, the gas in the gas box 701 is discharged from the space between the sealing plug 709 and the insertion hole 706 and the communication groove 707, the piston 712 is reset by the inner spring 703, the sealing plug 709 abuts against the abutting seat 702, the communication groove 707 is sealed again, after the piston 712 resets, the sliding plate 601 also resets, the fourth spring 604 opens, and the rack 602 is separated from the pinion 404, the sealing plate 406 is restored by the torsion spring 405, sealing of the connecting cylinder 402 is achieved, according to the method, the air tank 701 is inflated again by the inflator 705, so that the sealing plate 406 is opened and closed intermittently, and intermittent blanking is realized, and the phenomenon that metal powder is directly poured onto a sieve plate on the sieving machine 9 in large quantity to cause damage to the sieve plate is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The utility model provides a metal powder screening plant that 3D printed, its characterized in that, including mount (1), install storage mechanism (2) that the raw materials was stored on mount (1), install screening machine (9) on mount (1), install control mechanism (4) of intercommunication storage mechanism (2) and screening machine (9) on mount (1), install on mount (1) and carry out dirt-proof dustproof mechanism (3) to control mechanism (4), install on mount (1) and carry out collection mechanism (5) of collecting to the metal powder that the screening was accomplished, install on mount (1) and carry out actuating mechanism (8) to the vibration of collection mechanism (5), install power unit (7) of being connected with actuating mechanism (8) on mount (1), install on mount (1) and be located drive mechanism (6) top of power unit (7), the transmission mechanism (6) is connected with the control mechanism (4);
the control mechanism (4) comprises a second mounting plate (401), the second mounting plate (401) is fixed on the fixing frame (1), a connecting cylinder (402) is fixedly connected onto the second mounting plate (401), a sealing plate (406) is rotatably connected into the connecting cylinder (402) through a rotating shaft (403), a torsion spring (405) is clamped between the rotating shaft (403) and the connecting cylinder (402), a gear (404) is fixedly connected onto the rotating shaft (403) penetrating one end of the connecting cylinder (402), the connecting cylinder (402) is connected with the screening machine (9) through a hose, the power mechanism (7) comprises an inflator (705), the inflator (705) is mounted on the fixing frame (1), an air tank (701) is mounted on the fixing frame (1), and the air tank (701) and the inflator (705) are connected through an air pipe (704) with a one-way valve, the gas tank is characterized in that a piston (712) is connected to the inside of the gas tank (701) in a sliding manner, a communicating groove (707) is formed in the piston (712), a jack (706) located on the outer side of the communicating groove (707) is formed in the piston (712), a sealing plug (709) sealing the communicating groove (707) and the jack (706) is formed in the piston (712), a perforated pressing shell (711) corresponding to the jack (706) is fixed to the top of the gas tank (701) through a top frame (710), a butting seat (702) corresponding to the piston (712) is fixed to the inner bottom of the gas tank (701), an inner spring (703) is clamped between the piston (712) and the gas tank (701), the transmission mechanism (6) comprises a limiting seat (603), a limiting seat (603) is fixed to the inner wall of the fixing frame (1), a sliding plate (601) is connected to the limiting seat (603) in a sliding manner, and one end of the sliding plate (601) extends to the gas tank (701), a fourth spring (604) is clamped between the sliding plate (601) and the limiting seat (603), and a rack (602) is arranged on the side wall of the sliding plate (601).
2. A 3D printed metal powder screening device according to claim 1, wherein: the cross section of the sliding plate (601) is in a cross-shaped structure, and the distance from the bottom of the sliding plate (601) to the piston (712) is equal to the distance from the gear (404) to the rack (602).
3. A 3D printed metal powder screening device according to claim 1, wherein: the power mechanism (7) further comprises a filter screen (708) and a connecting rod (713), the filter screen (708) positioned in the communicating groove (707) is fixed on the piston (712), and the connecting rod (713) which is fixed with the top of the sealing plug (709) and has a T-shaped cross section is arranged on the filter screen (708) in a sliding mode.
4. A 3D printed metal powder screening device according to claim 1, wherein: the sealing plug (709) is of a circular truncated cone-shaped structure, an arc-shaped groove is formed in the bottom of the sealing plug (709), and the length of the abutting seat (702) is larger than the diameter of the sealing plug (709).
5. A 3D printed metal powder screening device according to claim 1, wherein: actuating mechanism (8) include motor (801), carousel (802) are installed through the shaft coupling to the output of motor (801), eccentric being fixed with eccentric post (804) on carousel (802), the cover is equipped with push pedal (803) of seting up waist type groove on eccentric post (804), two swinging arms (806) of the relative fixedly connected with in both sides of push pedal (803), two interior seats (805) of fixedly connected with are gone up in mount (1), sliding connection between swinging arm (806) and interior seat (805), one of them swinging arm (806) is connected with inflater (705).
6. A3D printed metal powder screening device according to claim 5, wherein: the collecting mechanism (5) comprises a placing plate (502), the bottom of the fixing frame (1) is connected with the placing plate (502) in a sliding mode through a sliding strip (503), the placing plate (502) is connected with two pressing frames (504) in a sliding mode relatively, the tops of the pressing frames (504) are in an inverted L-shaped structure, a third spring (507) is clamped between the pressing frames (504) and the placing plate (502), the placing plate (502) is connected with two clamping plates (505) with outer side walls obliquely and in a sliding mode relatively, edges and corners of the pressing frames (504) are abutted to the outer side walls of the clamping plates (505), a second spring (506) is clamped between the placing plate (502) and the clamping plates (505), the placing plate (502) with the U-shaped structure in cross section is provided with a collecting barrel (501), the collecting barrel (501) is abutted to the pressing frames (504), and the collecting barrel (501) is abutted to the clamping plates (505), the collecting barrel (501) is connected with the sieving machine (9) through a hose, and the end part of the other swinging rod (806) is fixed with the placing plate (502).
7. A3D printed metal powder screening device according to claim 6, wherein: the thickness of the clamping plate (505) is smaller than that of the placing plate (502), and the inner wall of the clamping plate (505) is of an inverted L-shaped structure.
8. A 3D printed metal powder screening device according to claim 1, wherein: the storage mechanism (2) comprises a fixing plate (201), the fixing plate (201) is fixedly connected to the fixing frame (1), a placing seat (202) is fixed to the fixing plate (201), a storage tank (203) is placed on the placing seat (202), a discharge pipe (204) extending to the inside of the connecting cylinder (402) is fixed to the bottom of the storage tank (203), and a valve (205) is installed on the discharge pipe (204).
9. A 3D printed metal powder screening device according to claim 8, wherein: dustproof mechanism (3) include first mounting panel (301), it is connected with bull stick (302) to rotate on first mounting panel (301), be fixed with on bull stick (302) to the sealed guard plate (303) of connecting cylinder (402), the lateral wall of bull stick (302) is the spiral and has seted up walking groove (304), fixed plate (201), place and slide on seat (202) and have depression bar (305), it has first spring (307) to press from both sides between depression bar (305) and fixed plate (201), rotate on depression bar (305) have with walking groove (304) rolling roller bearing (306).
10. A 3D printed metal powder screening device according to claim 9, wherein: dustproof mechanism (3) still include arch (308), the bottom of storage tank (203) is fixed with arch structure, with the arch (308) that the depression bar (305) are contradicted.
CN202210623933.0A 2022-06-02 2022-06-02 Metal powder screening plant of 3D printing Active CN114932078B (en)

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