CN109570505B - Metal powder feeding device and 3D printer - Google Patents
Metal powder feeding device and 3D printer Download PDFInfo
- Publication number
- CN109570505B CN109570505B CN201811598654.3A CN201811598654A CN109570505B CN 109570505 B CN109570505 B CN 109570505B CN 201811598654 A CN201811598654 A CN 201811598654A CN 109570505 B CN109570505 B CN 109570505B
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- Prior art keywords
- metal powder
- spreading
- bin body
- feeding device
- storage bin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/52—Hoppers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/38—Housings, e.g. machine housings
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention belongs to the technical field of 3D printers, and particularly relates to a metal powder feeding device and a 3D printer, wherein the metal powder feeding device comprises a mounting bracket, a spreading component and a feeding component, the spreading component comprises a spreading plate and a scraper, the spreading plate is mounted on the mounting bracket, the scraper is slidably mounted at one end of the spreading plate and is surrounded with the spreading plate together to form a spreading area, each feeding component comprises a storage bin and a vibrating motor, the vibrating motor is mounted on the storage bin, one end of the storage bin is mounted on the mounting bracket and is positioned above one end of the spreading plate, the other end of the storage bin is provided with a discharging hole for discharging materials towards the spreading area, and an adjusting piece for adjusting the size of the discharging hole is mounted on the storage bin.
Description
Technical Field
The invention belongs to the technical field of 3D printers, and particularly relates to a metal powder feeding device and a 3D printer.
Background
The 3D printing is a hot spot applied in the prior art, the 3D printing is an incremental manufacturing process, waste of raw materials, particularly rare materials, can be greatly reduced, and the 3D printing can also be used for directly printing and manufacturing characteristics and products which cannot be manufactured by common quantitative processing, such as a closed inner cavity, a bent inner cavity pipeline and the like. Compared with printing by using plastic materials such as ABS, 3D printing by using metal powder is higher in difficulty in feeding in the printing process due to the special material property, but better in application prospect.
The existing 3D metal printing feeding modes comprise pushing and overturning modes, wherein the pushing and overturning mode is to directly push the placed metal powder raw materials by utilizing a scraper, so that the metal powder raw materials are enabled to turn over to the front feeding end of the scraper, and then spreading and printing are carried out; the turnover type is to provide the metal powder raw material to a turnover mechanism, and then turn over and convey the metal powder raw material to the front of a scraper for spreading and printing after quantitative. However, the feeding methods of the two modes tend to easily generate the problems of waste, inaccurate feeding amount and low efficiency of the metal powder raw materials.
Disclosure of Invention
The invention aims to provide a metal powder feeding device and a 3D printer, and aims to solve the technical problems that materials are easy to waste and feeding is inaccurate when a 3D printer in the prior art prints by using metal powder.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a metal powder feedway, includes the installing support, is used for printing the shop material's shop material subassembly and at least one feed subassembly, the shop material subassembly includes shop material board and scraper, the shop material board install in on the installing support, scraper slidable mounting in the one end of shop material board just with the shop material board encloses jointly and establishes the formation shop material district, each feed subassembly all includes feed bin and vibrating motor, vibrating motor install in on the feed bin, the one end of feed bin is installed on the installing support and be located the top of shop material board one end, the other end of feed bin is equipped with and is used for the orientation the discharge gate of blowing in the shop material district, install on the feed bin and adjust the regulating part of discharge gate size.
Preferably, the feed bin comprises a storage bin body and a feeding bin body, the upper end of the storage bin body is mounted on the mounting bracket, the discharge hole is formed in the lower end of the storage bin body, the adjusting piece is mounted on the storage bin body and is close to the discharge hole, the upper end of the feeding bin body is connected with the lower end of the storage bin body and is communicated with the discharge hole, the lower end of the feeding bin body is inclined towards the spreading area, and the vibrating motor is mounted on the storage bin body.
Preferably, the storage bin body comprises a first-stage cavity and a second-stage cavity, the upper end of the first-stage cavity is installed on the installation support, a first shrinkage part is arranged on the periphery of the lower end of the first-stage cavity in a surrounding mode, the upper end of the second-stage cavity is connected to the first shrinkage part, a second shrinkage part is arranged on the periphery of the lower end of the second-stage cavity in a surrounding mode, the upper end of the feeding bin body is connected to the second shrinkage part, the lower end of the feeding bin body extends downwards towards the middle direction of the material spreading plate in an inclined mode, the adjusting part is installed on the second shrinkage part, and the vibrating motor is installed on the first shrinkage part.
Preferably, the bin further comprises a transition bin body connected between the second shrinkage part and the feeding bin body, and the adjusting piece is mounted on the transition bin body.
Preferably, the adjusting piece comprises a clamping plate, a splicing groove is formed in one side of the transition bin body, and the clamping plate is inserted into the splicing groove and extends into the transition bin body.
Preferably, the adjusting piece further comprises a push-pull frame, two push-pull grooves are further formed in the transition bin body, the two push-pull grooves are respectively located on two sides of the inserting groove, the push-pull frame comprises a push rod and pull rods connected to two sides of the push rod, and the tail ends of the two pull rods respectively penetrate through the two push-pull grooves and are connected with the clamping plate.
Preferably, the adjusting piece further comprises at least one limiting bolt, each limiting bolt comprises a first limiting column, a second limiting column and a connecting column, the first limiting column is fixedly installed on the other side of the transition bin body, one end of the connecting column is connected to the first limiting column, the other end of the connecting column extends towards the direction deviating from the first limiting column and penetrates through the push rod, the second limiting column is connected with the tail end of the connecting column, and the push rod is slidably connected to the connecting column.
Preferably, powder baffle plates are respectively arranged on two sides of the spreading plate, two ends of the scraper are respectively and slidably arranged on the two powder baffle plates, and the spreading plate, the scraper and the two powder baffle plates are jointly enclosed to form the spreading area.
Preferably, two ends of the scraper are provided with inverted U-shaped sliding blocks, two sides of the two powder baffle plates on the spreading plate are respectively provided with sliding grooves, the lower end surface of the spreading plate is provided with two guide rails, the two guide rails are respectively positioned below the two powder baffle plates and extend in the same direction as the powder baffle plates, the upper ends of the two inverted U-shaped sliding blocks are respectively sleeved on the two powder baffle plates, and the lower ends of the two inverted U-shaped sliding blocks respectively pass through the sliding grooves and are in sliding connection with the two guide rails; the metal powder feeding device further comprises a driving mechanism, the driving mechanism comprises a driving motor, a synchronous belt, a first synchronous wheel and a second synchronous wheel, at least one inverted U-shaped sliding block is provided with a fixed clamping block, the driving motor is mounted on the material spreading plate and is close to one end of the guide rail, the second synchronous wheel is fixedly connected with a main shaft of the driving motor, the first synchronous wheel is mounted on the material spreading plate and is close to the other end of the guide rail, and the synchronous belt is meshed between the first synchronous wheel and the second synchronous wheel in a winding mode, and the fixed clamping block is fixedly connected with the synchronous belt.
The invention has the beneficial effects that: when the metal powder feeding device is used, metal powder is added into the bin, and the size of the discharge hole is adjusted through the adjusting piece, so that friction damping formed between the metal powder in the bin is exactly balanced with self gravity, namely the metal powder is kept in a static state in the bin and does not fall; when the 3D printing is performed by discharging materials into the material spreading area, the vibration motor is started to enable the material bin to vibrate in a certain amplitude, and at the moment, the metal material powder changes the balance state due to vibration and starts to flow out from the material outlet; when the feeding in the spreading area is required to be stopped, the vibrating motor is only required to be turned off, the bin stops vibrating, the metal powder is recovered to be in a balanced state and is not discharged any more, and thus the purpose of quantitatively feeding in the spreading area is achieved by starting the working time of the vibrating motor, the waste of materials is effectively reduced, and the feeding accuracy is improved. And the metal powder placed in the bin can be selected according to the actual printing requirement, such as stainless steel powder, tungsten steel powder or titanium powder, wherein the friction damping among different metal powder is different, so that when the material is discharged in a material spreading area, the purpose that different materials can be equally suitable for the bin to realize quantitative material supply can be achieved by adjusting the vibration amplitude of the vibration motor and the size of the discharge hole, and the bin has excellent market application prospect.
The invention adopts another technical scheme that: the utility model provides a 3D printer, is including being used for accepting the powder device and foretell metal powder feedway of receiving the metal powder in the spreading region, connect the powder device install in on the installing support and be located the below of spreading plate.
According to the 3D printer, due to the fact that the metal powder feeding device is used, when the printing is performed, the quantity of metal powder required for feeding into a spreading area can be accurately supplied by controlling the vibration time of the vibration motor, then the metal powder is pushed to the powder spreading opening by the scraper, so that the metal powder enters the powder receiving device for printing, the accuracy of model printing is improved, metal materials are saved, and the 3D printer has excellent market application prospects.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a metal powder feeding device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing an explosion structure of a metal powder feeding device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing an explosion structure of a metal powder feeding device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a silo of a metal powder feeding device according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a silo of a metal powder feeding device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a discharge port of a metal powder feeding device according to an embodiment of the present invention.
Wherein, each reference sign in the figure:
10-mounting bracket 20-paver assembly 21-paver plate
22-scraper 23-spreading area 24-powder baffle
30-feeding component 31-stock bin 32-vibrating motor
33-regulating piece 34-discharge hole 40-driving mechanism
41-driving motor 42-synchronous belt 43-fixing clamp block
221-inverted U-shaped slide block 311-storage bin body 312-feeding bin body
313-transition bin 331-clamping plate 332-push-pull frame
333-stop bolt 3111-primary cavity 3112-secondary cavity
3131-fixing hole 3321-push rod 3322-pull rod
3331-first spacing column 3332-second spacing column 3333-connecting column
31111-first pinch portion 31121-second pinch portion.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 6 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 6, an embodiment of the present invention provides a metal powder feeding device, including a mounting bracket 10, a spreading component 20 for printing spreading and at least one feeding component 30, where the spreading component 20 includes a spreading plate 21 and a scraper 22, the spreading plate 21 is mounted on the mounting bracket 10, the scraper 22 is slidably mounted on one end of the spreading plate 21 and encloses a spreading area 23 with the spreading plate 21 together, each feeding component 30 includes a bin 31 and a vibration motor 32, the vibration motor 32 is mounted on the bin 31, one end of the bin 31 is mounted on the mounting bracket 10 and located above one end of the spreading plate 21, the other end of the bin 31 is provided with a discharge hole 34 for discharging toward the spreading area 23, and an adjusting member 33 for adjusting the size of the discharge hole 34 is mounted on the bin 31.
Specifically, when the metal powder feeding device provided by the embodiment of the invention is used, metal powder is added into the bin 31, and the size of the discharge hole 34 is adjusted through the adjusting piece, so that friction damping formed between the metal powder in the bin 31 is exactly balanced with self gravity, namely the metal powder is kept in a static state in the bin 31 and does not fall; then, when the 3D printing is needed by discharging materials into the material spreading area 23, the vibration motor 32 is started to enable the material bin 31 to vibrate to a certain extent, and at the moment, the metal material powder changes the balance state due to the vibration and starts to flow out from the material outlet 34; when the feeding in the spreading area 23 is required to be stopped, the vibration motor 32 is only required to be turned off, the material bin 31 stops vibrating, and the metal powder is recovered to be in a balanced state and is not discharged any more, so that the purpose of quantitatively feeding in the spreading area 23 is realized by starting the working time of the vibration motor 32, the waste of materials is effectively reduced, and the feeding accuracy is improved. In addition, when the metal powder placed in the bin 31 can be selected according to the actual printing requirement, such as stainless steel powder, tungsten steel powder or titanium powder, wherein the friction damping among different metal powder is different, so that when the material is discharged in the material spreading area 23, the purpose that different materials can be equally suitable for the bin 31 to realize quantitative feeding can be achieved by adjusting the vibration amplitude of the vibration motor 32 and the size of the discharge hole 34, and the quantitative feeding device has excellent market application prospect.
Further, the number of the bins 31 is two, and the two bins 31 are respectively located above two ends of the spreading plate 21. Specifically, the two bins 31 are respectively installed at the left end and the right end of the spreading area 23, so that before feeding to the spreading area 23, the scraper 22 moves to the left end limit position of the spreading area 23, so that the scraper 22 is positioned behind the discharge port 34 of one of the bins 31 (such as the bin 31 at the left end), and after the bin 31 at the left end finishes one-time material placement in the spreading area 23, the scraper 22 translates towards the right on the spreading area 23, and the powder in the spreading area 23 is spread and printed, namely a layer of printing is completed; when the scraper 22 moves to the limit position of the right end of the spreading area 23, spreading the material in the spreading area 23 from the bin 31 positioned at the right end, and when the material is placed in the spreading area 23 once from the bin 31 positioned at the right end, translating the scraper 22 leftwards on the spreading area 23, spreading and printing the powder in the spreading area 23, namely finishing a layer of printing; the printing efficiency is doubled by circulating and reciprocating in this way, and the use effect is good.
Further, two charging windows are arranged on the mounting bracket 10 for charging metal powder into the two bins 31. Specifically, through being located the top of two feed bins 31 on installing support 10 and setting up the charging window, wherein, the charging window sets up the movably state of opening, can articulate the one end of charging window on installing support 10 to operating personnel can look over the surplus of the metal powder of feed bin 31 through the charging window at any time, so that in time add the metal powder in feed bin 31, guarantee in the in-process feed bin 31 of printing can be in the continuously reinforced in the spreading zone 23.
In this embodiment, as shown in fig. 2 to 5, the bin 31 includes a storage bin body 311 and a feeding bin body 312, the upper end of the storage bin body 311 is mounted on the mounting bracket 10, the discharge port 34 is disposed at the lower end of the storage bin body 311, the adjusting member 33 is mounted on the storage bin body 311 and near the discharge port 34, the upper end of the feeding bin body 312 is connected with the lower end of the storage bin body 311 and is communicated with the discharge port 34, the lower end of the feeding bin body 312 is inclined and extends towards the spreading area 23, and the vibration motor 32 is mounted on the storage bin body 311. Specifically, the metal powder is stored in the storage bin body 311, the feeding bin body 312 is obliquely installed between the storage bin body 311 and the spreading area 23, two ends of the feeding bin body 312 are both opened, when the vibration motor 32 is started, the storage bin body 311 starts vibrating, the metal powder flows out from the discharge port 34 at this time, the feeding bin body 312 guides the metal powder flowing out from the discharge port 34 on the storage bin body 311 to the upper part of the spreading area 23 and then falls into the spreading area 23, after the metal powder falls into a specified amount in the spreading area 23, the scraper 22 starts to move back and forth in the spreading area 23, and spreading printing is performed on the metal powder.
In this embodiment, as shown in fig. 4 to 5, the storage bin body 311 includes a primary cavity 3111 and a secondary cavity 3112, the upper end of the primary cavity 3111 is mounted on the mounting bracket 10, a first necking portion 31111 is surrounded by the periphery of the lower end of the primary cavity 3111, the upper end of the secondary cavity 3112 is connected to the first necking portion 31111, a second necking portion 31121 is surrounded by the periphery of the lower end of the secondary cavity 3112, the upper end of the feeding bin body 312 is connected to the second necking portion 31121, the lower end of the feeding bin body 312 extends obliquely downward toward the middle direction of the spreading plate 21, the adjusting member 33 is mounted on the second necking portion 31121, and the vibrating motor 32 is mounted on the first necking portion 31111. Specifically, the primary cavity 3111 and the secondary cavity 3112 are both square, and the cross-sectional area of the primary cavity 3111 is larger than that of the secondary cavity 3112, wherein the first necking portion 31111 located below the primary cavity 3111 is composed of four sloping plates, the lower ends of the four sloping plates extend obliquely downward toward the middle direction of the primary cavity 3111, the lower side of the primary cavity 3111 is contracted into an opening with the same size as the upper end of the secondary cavity 3112, and the upper end of the secondary cavity 3112 is connected to the lower ends of the four sloping plates; similarly, the lower end of the secondary chamber 3112 is also inclined downward toward the middle by two inclined plates, and the lower end of the secondary chamber 3112 is contracted into the discharge port 34. Thus, when the metal powder is placed in the first cavity 3111 and the second cavity 3112, the inclined plane on the first necking portion 31111 and the inclined plane on the second necking portion 31121 play a certain role in blocking twice, so that the friction damping between the metal powder can balance the gravity of the metal powder, and when the vibration motor 32 mounted on the first necking portion 31111 vibrates, the metal powder flows out from the discharge hole 34, and when vibration is stopped, the metal powder does not flow out.
In this embodiment, as shown in fig. 4 to 6, the bin 31 further includes a transition bin body 313, the transition bin body 313 is connected between the second necking portion 31121 and the feeding bin body 312, and the adjusting member 33 is mounted on the transition bin body 313. Specifically, the transition bin body 313 is used for conveying the metal powder flowing out from the second necking part 31121 into the feeding bin body 312, and by installing the adjusting piece 33 on the transition bin body 313, the adjusting piece 33 has enough installation position to adjust the size of the discharging hole 34, so that the metal powder can be accurately discharged in the bin 31 through the vibration of the vibrating motor 32, and the use effect is good.
In this embodiment, as shown in fig. 4 to 6, the adjusting member 33 includes a clamping plate 331, a plugging slot is formed on one side of the transition bin 313, and the clamping plate 331 is inserted into the plugging slot and extends into the transition bin 313. Specifically, the inside of the transition bin body 313 is a flat and long cavity, and the clamping plate 331 is vertically inserted into the inside of the transition bin body 313 from one side of the transition bin body 313, so that the size of the discharge hole 34 can be adjusted by adjusting the depth of the clamping plate 331 inserted into the transition bin body 313, and when different metal powders are placed in the bin 31, the size of the discharge hole 34 can be adjusted by the clamping plate 331, so that the discharge hole 34 can be kept in a balanced state when the vibration motor 32 does not vibrate.
In this embodiment, as shown in fig. 4 to 6, the adjusting member 33 further includes a push-pull frame 332, two push-pull grooves are further formed on the transition bin body 313, the two push-pull grooves are respectively located at two sides of the insertion groove, the push-pull frame 332 includes a push rod 3321 and pull rods 3322 connected to two sides of the push rod 3321, and the ends of the two pull rods 3322 respectively pass through the two push-pull grooves and are connected with the clamping plate 331. Specifically, a push-pull frame 332 is disposed on the other side of the transition bin 313, wherein the pull rods 3322 disposed on two sides of the push rod 3321 can move back and forth in the two push-pull grooves, so that the clamping plates 331 connected to the pull rods 3322 can adjust the size of the discharge port 34 by pushing and pulling the push rod 3321, so that the depth of the clamping plates 331 inserted into the transition bin 313 is convenient to use; further, a fixing hole 3131 is further formed on one side or both sides of the transition bin body 313, and the fixing hole 3131 is communicated with the push-pull groove, so that when the corresponding size of the discharge hole 34 is adjusted according to different metal powder placed in the bin 31, the corresponding fixing hole 3131 can be screwed in through a fastener (such as a screw), the fastener abuts against the pull rod 3322, the pull rod 3322 is fixed to move in the push-pull groove, the discharge hole 34 is ensured to be not changed under the vibration of the vibration motor 32, and when the vibration motor 32 stops vibrating, the metal powder and the bin 31 can be kept in a balanced state, and the accurate feeding amount of the discharge hole 34 can be ensured.
In this embodiment, as shown in fig. 4 to 6, the adjusting member 33 further includes at least one limiting bolt 333, each limiting bolt 333 includes a first limiting post 3331, a second limiting post 3332 and a connecting post 3333, the first limiting post 3331 is fixedly mounted on the other side of the transition bin body 313, one end of the connecting post 3333 is connected to the first limiting post 3331, the other end extends in a direction away from the first limiting post 3331 and passes through the push rod 3321, the second limiting post 3332 is connected with the end of the connecting post 3333, and the push rod 3321 is slidably connected to the connecting post 3333. Specifically, by arranging the limiting bolts 333 on the other side of the transition bin 313 opposite to the clamping plate 331, each connecting column 3333 passes through the pushing rod 3321, and the two ends of the connecting column 3333 are respectively provided with a first limiting column 3331 and a second limiting column 3332 for stopping, so that the pushing rod 3321 can only move back and forth along the length direction of the connecting column 3333, i.e. the moving stroke of the pushing rod 3321 is equal to the length of the connecting column 3333, thus preventing the clamping plate 331 from completely sealing the discharge hole 34 or the clamping plate 331 from being separated from the inserting groove when moving 332.
In this embodiment, as shown in fig. 2 to 3, powder baffle plates 24 are respectively disposed on two sides of the spreading plate 21, two ends of the scraper 22 are respectively slidably mounted on two powder baffle plates 24, and the spreading plate 21, the scraper 22 and the two powder baffle plates 24 jointly enclose to form the spreading region 23. Specifically, by arranging the powder baffle plates 24 on two sides of the spreading plate 21 respectively, two ends of the scraper 22 are vertically sleeved between the two powder baffle plates 24, and the scraper 22 can move back and forth on the powder baffle plates 24, so that the two powder baffle plates 24 can effectively prevent metal powder on the spreading plate 21 from overflowing to two sides in the spreading printing process of the scraper 22, and the situation that the determined supply quantity is reduced and the printing effect is affected is caused; but also to make the movement of the doctor blade 22 back and forth over the spreading zone 23 smoother.
In this embodiment, as shown in fig. 2 to 3, two ends of the scraper 22 are respectively provided with an inverted "U" shaped slider 221, two sides of the two powder baffle plates 24 on the spreading plate 21 are respectively provided with a sliding groove, the lower end surface of the spreading plate 21 is provided with two guide rails, the two guide rails are respectively positioned below the two powder baffle plates 24 and extend in the same direction as the powder baffle plates 24, and the upper ends of the two inverted "U" shaped sliders 221 are respectively sleeved on the two powder baffle plates 24, and the lower ends of the two inverted "U" shaped sliders respectively pass through the sliding grooves and are in sliding connection with the two guide rails; the metal powder feeding device further comprises a driving motor 41, a synchronous belt 42, a first synchronous wheel and a second synchronous wheel, at least one inverted U-shaped sliding block 221 is provided with a fixed clamping block 43, the driving motor 41 is installed on the material spreading plate 21 and is close to one end of the guide rail, the second synchronous wheel is fixedly connected with a main shaft of the driving motor 41, the first synchronous wheel is installed on the material spreading plate 21 and is close to the other end of the guide rail, the synchronous belt 42 is wound and meshed between the first synchronous wheel and the second synchronous wheel, and the fixed clamping block 43 is fixedly connected with the synchronous belt 42. Specifically, two ends of the scraper 22 are respectively provided with an inverted "U" shaped sliding block 221, wherein the upper end of the inverted "U" shaped sliding block 221 is sleeved on the powder baffle 24, the lower end of the inverted "U" shaped sliding block is in sliding connection with the guide rail, and the synchronous belt 42 is wound on the first synchronous wheel, the fixed clamping block 43 and the second synchronous wheel, so that when the driving motor 41 is started, the fixed clamping block 43 drives the inverted "U" shaped sliding block 221 to move back and forth between the first synchronous wheel and the second synchronous wheel, that is, drives the scraper 22 to move back and forth on the two powder baffles 24.
The fixed clamping block comprises a fixed plate body and a meshing block body, meshing teeth meshed with the synchronous belt 42 are arranged on the meshing block body, and the fixed plate body is located above the meshing block body, so that after the synchronous belt 42 is meshed with the meshing block body, the synchronous belt 42 is fixedly clamped between the fixed plate body and the meshing block body through the fixation of the fixed plate body, and the fixed clamping block can move back and forth under the driving of the synchronous belt 42 without relative sliding between the synchronous belt 42 and the fixed clamping block.
The embodiment of the invention also provides a 3D printer, which comprises a powder receiving device for receiving the metal powder in the spreading area 23 and the metal powder feeding device, wherein the powder receiving device is arranged on the mounting bracket 10 and is positioned below the spreading plate 21.
According to the 3D printer provided by the embodiment of the invention, due to the fact that the metal powder feeding device is used, when the printing is performed, the quantity of the required metal powder can be accurately supplied to the spreading area 23 by controlling the vibration time of the vibration motor 32, and then the scraper 22 pushes the metal powder to the powder spreading opening, so that the metal powder enters the powder receiving device for printing, the accuracy of model printing is improved, metal materials are saved, and the 3D printer has excellent market application prospects.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A metal powder feeding device, characterized in that: the automatic feeding device comprises a mounting bracket, a spreading component and at least one feeding component, wherein the spreading component is used for printing spreading, the spreading component comprises a spreading plate and a scraper, the spreading plate is mounted on the mounting bracket, the scraper is slidably mounted at one end of the spreading plate and is surrounded with the spreading plate together to form a spreading area, each feeding component comprises a storage bin and a vibrating motor, the vibrating motor is mounted on the storage bin, one end of the storage bin is mounted on the mounting bracket and is positioned above one end of the spreading plate, the other end of the storage bin is provided with a discharge hole for discharging materials in the spreading area, and an adjusting piece for adjusting the size of the discharge hole is mounted on the storage bin;
when the metal powder feeding device is used, metal powder is added into the bin, the size of the discharge hole is adjusted through the adjusting piece, so that friction damping formed between the metal powder in the bin is balanced with self gravity, the metal powder is kept in a static state in the bin and does not fall, when 3D printing is carried out by discharging in the spreading area, the vibrating motor is started, the bin is enabled to vibrate by a certain amplitude, the balance state of the metal powder is changed due to vibration, and the metal powder starts to flow out from the discharge hole.
2. The metal powder feeding device according to claim 1, wherein: the feed bin comprises a storage bin body and a feeding bin body, wherein the upper end of the storage bin body is installed on the installation support, the discharge hole is formed in the lower end of the storage bin body, the adjusting piece is installed on the storage bin body and is close to the discharge hole, the upper end of the feeding bin body is connected with the lower end of the storage bin body and is communicated with the discharge hole, the lower end of the feeding bin body is inclined towards the spreading area, and the vibrating motor is installed on the storage bin body.
3. The metal powder feeding device according to claim 2, wherein: the storage bin body comprises a first-level cavity and a second-level cavity, the upper end of the first-level cavity is installed on the installation support, a first shrinkage part is arranged on the periphery of the lower end of the first-level cavity in a surrounding mode, the upper end of the second-level cavity is connected to the first shrinkage part, a second shrinkage part is arranged on the periphery of the lower end of the second-level cavity in a surrounding mode, the upper end of the feeding bin body is connected to the second shrinkage part, the lower end of the feeding bin body faces the direction in the middle of the spreading plate and extends downwards in an inclined mode, the adjusting part is installed on the second shrinkage part, and the vibrating motor is installed on the first shrinkage part.
4. A metal powder feeding device according to claim 3, wherein: the feed bin further comprises a transition bin body, the transition bin body is connected between the second shrinkage part and the feeding bin body, and the adjusting piece is installed on the transition bin body.
5. The metal powder feeding device of claim 4, wherein: the adjusting piece comprises a clamping plate, a splicing groove is formed in one side of the transition bin body, and the clamping plate is inserted into the splicing groove and extends into the transition bin body.
6. The metal powder feeding device of claim 5, wherein: the adjusting piece further comprises a push-pull frame, two push-pull grooves are further formed in the transition bin body, the two push-pull grooves are respectively located on two sides of the inserting groove, the push-pull frame comprises a push rod and pull rods connected to two sides of the push rod, and the tail ends of the two pull rods respectively penetrate through the two push-pull grooves and are connected with the clamping plate.
7. The metal powder feeding device of claim 6, wherein: the regulating part further comprises at least one limiting bolt, each limiting bolt comprises a first limiting column, a second limiting column and a connecting column, the first limiting column is fixedly arranged on the other side of the transition bin body, one end of the connecting column is connected to the first limiting column, the other end of the connecting column extends towards the direction deviating from the first limiting column and penetrates through the push rod, the second limiting column is connected with the tail end of the connecting column, and the push rod is slidably connected to the connecting column.
8. The metal powder feeding device according to any one of claims 1 to 7, wherein: the powder blocking plates are respectively arranged on two sides of the spreading plate, two ends of the scraper are respectively and slidably arranged on the two powder blocking plates, and the spreading plate, the scraper and the two powder blocking plates are jointly enclosed to form the spreading area.
9. The metal powder feeding device of claim 8, wherein: the two ends of the scraper are provided with inverted U-shaped sliding blocks, sliding grooves are respectively formed in two sides of the two powder baffle plates on the spreading plate, two guide rails are arranged on the lower end face of the spreading plate, the two guide rails are respectively positioned below the two powder baffle plates and extend in the same direction as the powder baffle plates, the upper ends of the two inverted U-shaped sliding blocks are respectively sleeved on the two powder baffle plates, and the lower ends of the two inverted U-shaped sliding blocks respectively pass through the sliding grooves and are in sliding connection with the two guide rails;
the metal powder feeding device further comprises a driving mechanism, the driving mechanism comprises a driving motor, a synchronous belt, a first synchronous wheel and a second synchronous wheel, at least one inverted U-shaped sliding block is provided with a fixed clamping block, the driving motor is mounted on the material spreading plate and is close to one end of the guide rail, the second synchronous wheel is fixedly connected with a main shaft of the driving motor, the first synchronous wheel is mounted on the material spreading plate and is close to the other end of the guide rail, and the synchronous belt is meshed between the first synchronous wheel and the second synchronous wheel in a winding mode, and the fixed clamping block is fixedly connected with the synchronous belt.
10. A 3D printer, characterized in that: the metal powder feeding device comprises a powder receiving device for receiving metal powder in a spreading area and the metal powder feeding device according to any one of claims 1 to 9, wherein the powder receiving device is arranged on the mounting bracket and is positioned below the spreading plate.
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| CN110143059A (en) * | 2019-05-07 | 2019-08-20 | 佛山市赛普飞特科技有限公司 | A kind of digital printing device and its digital printing method |
| CN115416297B (en) * | 2022-10-22 | 2023-01-24 | 河北智达维创电子科技有限公司 | 3D prints material thin layer stone device |
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