CN208976833U - Powder feeder device - Google Patents

Abstract

The utility model belongs to 3D printing technique field more particularly to a kind of powder feeder device.The device includes powdering platform, feed bin and automatic leakage mechanism, and automatic leakage mechanism includes material leakage pedestal, feeding gate plate and quantitative driving assembly；It is offered in material leakage pedestal for by the conveying channel on powder carry to powdering platform, quantitative driving assembly driving feeding gate plate to move back and forth the amount for changing the open degree in conveying channel and controlling the powder exported through conveying channel with respect to material leakage pedestal.Material leakage pedestal is offered the conveying channel on powder carry to powdering platform, powder is delivered on powdering platform via conveying channel, feeding gate plate is threaded through the inside of material leakage pedestal, and opposite material leakage pedestal can be controlled by quantitative driving assembly and moves back and forth and changes the open degree in conveying channel, to reach the amount for the powder that control is exported through conveying channel, the quantitative conveying of powder is realized.

Description

Powder feeder device

Technical field

The utility model belongs to 3D printing technique field more particularly to a kind of powder feeder device.

Background technique

Increasing material manufacturing (3D printing) is a kind of to construct three-dimension object by continuously fusing the material of more than one thin layer Increment manufacturing process can greatly reduce the waste that raw material is especially rare material, also, 3D using 3D printing manufacture product Printing can also directly print the feature for producing the product that the general amount of going processing can not manufacture, such as the closing inner chamber of product And curved intracavity pipeline of product etc..The basic process steps of 3D printing technique are as follows: threedimensional model is stored in computer In, and model is layered, obtain each layer of cross-section data；Powder model system or device are by dusty material on workbench Straticulation is sprawled, the beam (laser or electron beam) of high-energy density scans a section of threedimensional model on powder bed； Workbench declines the distance of a layer thickness, in the new powder in one layer of workbench upper berth, ray scanning threedimensional model Next section；Above step is repeated, until three-dimension object manufacture is completed.Wherein, powder raw material drying is tiny, is averaged Partial size is only 100 μm or so.

From the above it can be seen that it is to influence 3D printing skill that dusty material, which is tiled on the table, using powder model system or powder unit One of committed step of art, the feed mode of the powder unit of existing 3D printing mainly have extrusion type and convertible, wherein push Formula, which refers to, directly pushes metal powder material using the scraper of powder feeder device, and raw material climbs over scraper and is transported to the feeding of scraper Front end；It is convertible, refer to and provide a certain amount of powder onto a turnover mechanism, then overturns again before being transported to scraper.So And the two kinds of above feed modes cannot achieve quantitative feeding, and there is also the inaccurate, powders for discharge position in feeder process Waste is serious and is fed inefficient etc. defect.

Utility model content

The purpose of this utility model is to provide a kind of powder feeder devices, it is intended to solve powder feed in the prior art Device cannot achieve quantitative feeding and be fed the lower technical problem of efficiency.

A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: powder feeder device, including powdering are flat Platform and positioned at powdering platform top and for holding the feed bin of powder, powder feeder device further includes for by the powder in feed bin Expect the automatic leakage mechanism being delivered on powdering platform, automatic leakage mechanism includes the material leakage base for being fixed on the bottom surface of feed bin Seat, the feeding gate plate being arranged in material leakage pedestal and the quantitative driving assembly being connected with feeding gate plate；It is opened up in material leakage pedestal Have for by the conveying channel on powder carry to powdering platform, quantitative driving assembly driving feeding gate plate to be past with respect to material leakage pedestal It is multiple mobile to change the open degree in conveying channel and control the amount of the powder exported through conveying channel.

Further, material leakage pedestal has the upper surface being oppositely arranged and bottom surface and the first side portion being oppositely arranged With second side edge, the setting of upper surface face feed bin, conveying channel penetrates through upper surface and bottom surface, the first side of material leakage pedestal Portion, which is offered, wears the mouth that wears to material leakage pedestal for feeding gate plate, and the first end of feeding gate plate wears a mouthful rear overhang and is set to In conveying channel, the second end of feeding gate plate is located at the outside of material leakage pedestal, and quantitative driving assembly is connected to second side edge simultaneously For driving the first end of feeding gate plate to move back and forth in conveying channel to change the open degree in conveying channel.

Further, conveying channel close to second side edge inner sidewall towards second side edge concave shape at having for being clamped The first end of the card interface of the first end of feeding gate plate, quantitative driving assembly driving feeding gate plate is connected in card interface, or The first end of quantitative driving assembly driving feeding gate plate deviates from card interface.

Further, the first end of feeding gate plate is provided with Sealing cushion pad, and Sealing cushion pad is elastic buffering pad.

Further, quantitative driving assembly includes being fixedly connected with and being used for the lock for pushing feeding gate plate to move with feeding gate plate Plate impeller, flashboard impeller include the first gib block, the second gib block and be connected to the first gib block and the second gib block it Between connecting rod, the opposite both ends of material leakage pedestal offer first worn for the first gib block and the second gib block respectively Pilot hole and the second pilot hole, the first gib block and the second gib block be pierced by after corresponding first pilot hole and the second pilot hole with The second end of feeding gate plate is fixedly connected；

Quantitative driving assembly further includes the driving motor for driving flashboard impeller to move, the power output of driving motor Rotation gear is fixed on axis, be fixed in connecting rod with rotation gear engage connection flashboard push rack gear, rotate gear and Flashboard pushes rack gear engagement connection to push connecting rod that feeding gate plate is driven to move back and forth with respect to material leakage pedestal.

Further, several elastic components are connected between connecting rod and material leakage pedestal, and several elastic components are arranged at intervals at Between connecting rod and material leakage pedestal.

Further, elastic component is pressure spring, is arranged at intervals with several first pressure spring guide posts in second side edge, in connecting rod It is arranged at intervals with the second pressure spring guide post, each first pressure spring guide post, each pressure spring and each second pressure spring guide post correspond respectively, pressure spring Both ends be respectively sleeved on corresponding first pressure spring guide post and the second pressure spring guide post.

Further, powder feeder device further includes powder guiding mechanism, and powder guiding mechanism is fixed on material leakage pedestal Bottom surface is provided with the scraper that can be moved along the length direction of powdering platform, the powder of powder guiding mechanism on powdering platform Entrance is connected with conveying channel, and the powder outlet of powder guiding mechanism extends to the moving direction of scraper.

Further, powder feeder device further includes the vibrator for improving the feed smoothness of powder, vibrator peace Loaded on feed bin.

Further, the identical feed bin of two groups of structures and automatic leakage mechanism, and two groups of feed bins are provided on powdering platform The top in the opposite sides portion of powdering platform is symmetrically disposed on automatic leakage mechanism.

The utility model has the beneficial effects that the powder feeder device of the utility model, is provided with certainly in the bottom of feed bin Dynamic material leakage mechanism, the automatic leakage mechanism include material leakage pedestal, the feeding gate plate and fixed to cooperate to realize quantitative feeding Measure driving assembly.Specifically, material leakage pedestal is offered for by the conveying channel on the powder carry in feed bin to powdering platform, Powder enters material leakage pedestal from feed bin and is delivered on powdering platform via conveying channel；Feeding gate plate is threaded through material leakage pedestal Inside, and opposite material leakage pedestal can be controlled by quantitative driving assembly and move back and forth and change the open degree in conveying channel, to reach The amount of the powder exported to control through conveying channel, can realize the quantitative conveying of powder by automatic leakage mechanism as a result,. Also, quantitative driving mechanism is arranged to drive feeding gate plate to move automatically and adjust the open degree in conveying channel, it can not only be effective Realize the quantitative feeding of powder, moreover it is possible to avoid the occurrence of because feed is superfluous or powder under feeding caused by needing secondary feed etc. Waste improve the printing effect of 3D printing in addition, specified print job can be completed in a quantitative feeding, product is raw It produces efficiency and quality is all protected.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the topology view of powder feeder device provided by the embodiment of the utility model；

Fig. 2 is the feed bin of powder feeder device provided by the embodiment of the utility model and the assembled view of automatic leakage mechanism One；

Fig. 3 is the feed bin of powder feeder device provided by the embodiment of the utility model and the assembled view of automatic leakage mechanism Two；

Fig. 4 is the topology view one of the automatic leakage mechanism of powder feeder device provided by the embodiment of the utility model；

Fig. 5 is the automatic leakage mechanism and powder guiding mechanism dress of powder feeder device provided by the embodiment of the utility model The partial view matched；

Fig. 6 is the exploded view of the automatic leakage mechanism of powder feeder device provided by the embodiment of the utility model；

Fig. 7 is the Section View of the line A-A along Fig. 5；

Fig. 8 is the topology view of the feed bin of powder feeder device provided by the embodiment of the utility model.

Wherein, each appended drawing reference in figure:

10-powdering platform 11-scraper, 12-mounting racks

20-22-charging chamber of feed bin 21-feed bin installation locking block

23-powder 30-automatic leakage of supply room mechanism 31-material leakage pedestals

Quantitative 34-the elastic component of driving mechanism of 32-feeding gate plates 33-

40-powder guiding mechanism 41-lower plate, 42-upper cover plates

43-powder carry space 50-vibrator, 121-height adjustment plates

231-discharge port 232-doses, 311-conveying of observation window channels

312-wear the 314-the first pilot hole of 313-card interface of mouth

315-the second pilot hole 321-Sealing cushion pad, 331-flashboard impeller

332-driving motor 333-rotation, 334-flashboards of gear push rack gear

341-the first pressure spring guide post the 342-the second pressure spring the 3111-the first feeding chamber of guide post

3112-the second the 3311-the first gib block of 3113-conveying of feeding chamber gap

3312-the second 3313-connecting rod of gib block.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining the description of attached drawing 1~8 is exemplary, it is intended to for explaining the utility model, and should not be understood as practical to this Novel limitation.

In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term in the present invention.

As shown in Fig. 1~8, the powder feeder device of the utility model embodiment, including powdering platform 10 and be located at powdering The top of platform 10 and for holding the feed bin 20 of powder, powder feeder device further include for by the powder carry in feed bin 20 Automatic leakage mechanism 30 on to powdering platform 10, automatic leakage mechanism 30 include the material leakage base for being fixed on the bottom surface of feed bin 20 Seat 31, the feeding gate plate 32 being arranged in material leakage pedestal 31 and the quantitative driving mechanism 33 being connected with feeding gate plate 32；Material leakage Pedestal 31 is offered for by the conveying channel 311 on powder carry to powdering platform 10, quantitative driving mechanism 33 to drive feeding Flashboard 32 is moved back and forth with respect to material leakage pedestal 31 to change the open degree in conveying channel 311 and control and export through conveying channel 311 Powder amount.

The powder feeder device of the utility model embodiment is provided with automatic leakage mechanism 30 in the bottom of feed bin 20, The automatic leakage mechanism 30 includes the material leakage pedestal 31, feeding gate plate 32 and quantitative driving to cooperate to realize quantitative feeding Mechanism 33.Specifically, material leakage pedestal 31 is offered for leading to the conveying on the powder carry in feed bin 20 to powdering platform 10 Road 311, powder enter material leakage pedestal 31 from feed bin 20 and are delivered on powdering platform 10 via conveying channel 311；Feeding gate plate 32 are threaded through the inside of material leakage pedestal 31, and can control opposite material leakage pedestal 31 by quantitative driving mechanism 33 and move back and forth and change The open degree in conveying channel 311 passes through automatic leakage to reach the amount for the powder that control is exported through conveying channel 311 as a result, Mechanism 30 can realize the quantitative conveying of powder.Also, quantitative driving mechanism 33 is arranged, and driving feeding gate plate 32 moves automatically And the open degree in conveying channel 311 is adjusted, it can not only effectively realize the quantitative feeding of powder, moreover it is possible to avoid the occurrence of because being fed The waste surplus or under feeding for needing powder caused by secondary feed etc., in addition, a quantitative feeding can be completed it is specified Print job, improves the printing effect of 3D printing, and production efficiency and quality is all protected.

Specifically, such as Fig. 1 to Fig. 3, the powder feeder device of the present embodiment, the opposite two sides of the upper top of feed bin 20 Portion is respectively provided with feed bin installation locking block 21, when feed bin 20 is installed, by two feed bin installation locking blocks 21 and the structure in external environment It is fixedly connected, feed bin 20 can be hung to the top for being set to powdering platform 10, and can control by adjusting mounting height to adjust The distance between feed bin 20 and powdering platform 10 processed, it is convenient for disassembly and assembly.

In the present embodiment, as shown in Fig. 2, Fig. 3 and Fig. 8, feed bin 20 include from top to bottom sequentially connected charging chamber 22, Powder supply room 23 and the discharge port 231 for being opened in 23 lower section of powder supply room, discharge port 231 are connected with conveying channel 311 It is logical.Wherein, charging chamber 22 enters powder through charging chamber 22 and supplies for holding the powder raw material added into feed bin 20, powder raw material It answers in room 23, then enters conveying channel 311 through discharge port 231, be then transported on powdering platform 10 again, as powder is continuous Slave discharge port 231 export, the powder in charging chamber 22 constantly enters in powder supply room 23.Above-mentioned 20 installation folder of feed bin The opposite both sides of charging chamber 22 are arranged in tight block, doses observation window 232 are offered on powder supply room 23, in use, can With by doses observation window 232 observe powder supply room 23 in powder amount, when observe no powder from charging chamber 22 enter When powder supply room 23, then it represents that should be supplemented to charging chamber 22 and add powder.In this way, by setting doses observation window 232 with When the case where can grasping the amount of storage of powder in feed bin 20, capable of effectively avoiding the occurrence of 20 fracture of feed bin, timely supplement Powder guarantees the stability of print job.

In the present embodiment, as shown in Figures 4 to 7, material leakage pedestal 31 have the upper surface that is oppositely arranged and bottom surface with And the first side portion being oppositely arranged and second side edge, upper surface face feed bin 20 are arranged, conveying channel 311 penetrates through upper surface And bottom surface, i.e. conveying channel 311 is the through-hole structure being opened on material leakage pedestal 31, in no any extraneous structure barrier In the case of, the powder in feed bin 20 straight can reach on powdering platform 10 through the conveying channel 311；The of material leakage pedestal 31 Side edge, which offers to wear for feeding gate plate 32, wears mouth 312 to material leakage pedestal 31, and the first end of feeding gate plate 32 is worn It crosses and wears 312 rear overhang of mouth in conveying channel 311, the second end of feeding gate plate 32 is located at the outside of material leakage pedestal 31, quantitative Driving mechanism 33 is connected to second side edge and for driving the first end of feeding gate plate 32 to move back and forth in conveying channel 311 To change the open degree in conveying channel 311, i.e., feeding gate plate 32 is crossed in conveying channel 311, and when feeding gate plate 32 First end moves to when abutting with the side wall in conveying channel 311, and the transfer passage of powder can be truncated in feeding gate plate 32 by the waist, this When powder be deposited on feeding gate plate 32, and cannot further be conveyed again, that is to say, that feeding gate plate 32 is by conveying channel 311, which are divided into accumulation, the first feeding chamber 3111 of powder and temporary unapproachable second feeding chamber 3112 of powder, without 3D When print job, feeding gate plate 32 is in this state, and powder is avoided to leak out.

Specifically, as shown in Figures 4 to 7, when carrying out print job, start the quantitative control of driving mechanism 33 driving feeding lock Plate 32 is mobile relative to material leakage pedestal 31, moves to the first end of feeding gate plate 32 and does not abut with the side wall in conveying channel 311, such as This, forms conveying gap 3113, in the first feeding chamber 3111 between the first end of feeding gate plate 32 and the side wall in conveying channel 311 Powder can be entered in the second feeding chamber 3112 by the conveying gap 3113, and be transported on powdering platform 10.More Body, quantitative driving mechanism 33 is moved back and forth by driving feeding gate plate 32 with respect to material leakage pedestal 31 so as to adjust feeding gate plate 32 First end and conveying channel 311 side wall between the size in conveying gap 3113 that is formed, adjust the unlatching in conveying channel 311 Degree, and the powder throughput in 3113 unit time of conveying gap can calculate, in this way, can reach quantitative The purpose of powder carry amount processed.Also, quantitative driving mechanism 33 can drive feeding gate plate 32 to move with respect to material leakage pedestal 31 automatically Dynamic, the change of 311 open degree of conveying channel and adjustment fast and flexible can be realized the flexible switching of feed quantity, work efficiency is high.

In the present embodiment, as shown in Fig. 3, Fig. 4 and Fig. 7, inner sidewall court of the conveying channel 311 close to second side edge Second side edge concave shape drives at the card interface 313 for having the first end for being clamped feeding gate plate 32, quantitative driving mechanism 33 The first end of feeding gate plate 32 is connected in card interface 313, is truncated by the waist at this point, conveying channel 311 is fed flashboard 32, powder It is limited in the upper space and the first feeding chamber 3111 of feeding gate plate 32, i.e., the powder in feed bin 20 cannot be delivered to powdering Platform 10；Alternatively, quantitative driving mechanism 33 drives the first end of feeding gate plate 32 to deviate from card interface 313, at this point, feeding gate plate 32 First end and conveying channel 311 side wall between there is conveying gap 3113, powder can be exported via the gap.Specifically Ground is arranged the first end of the card interface 313 clamping feeding gate plate 32, can be improved the seal degree of powder when not conveying powder, Tiny powder is avoided to leak out from the abutting gap of 311 side wall of feeding gate plate 32 and conveying channel.

In the present embodiment, as shown in fig. 7, the first end of feeding gate plate 32 is provided with Sealing cushion pad 321, sealing buffering Pad 321 is elastic buffering pad.I.e. when the first end of feeding gate plate 32 is clamped to card interface 313, feeding gate plate 32 can be squeezed The Sealing cushion pad 321, feeding gate plate 32 squeezes Sealing cushion pad 321 and makes Sealing cushion pad 321 that flexible deformation occur, with more Good sealing conveying channel 311, is further ensured that powder will not leak.

In the present embodiment, as shown in Figures 5 to 7, quantitative driving mechanism 33 includes being fixedly connected simultaneously with feeding gate plate 32 Flashboard impeller 331 for pushing feeding gate plate 32 to move, flashboard impeller 331 are led including the first gib block 3311, second To item 3312 and the connecting rod 3313 being connected between the first gib block 3311 and the second gib block 3312, the phase of material leakage pedestal 31 Pair both ends offer the first pilot hole 314 and second worn for the first gib block 3311 and the second gib block 3312 respectively Pilot hole 315, the first gib block 3311 and the second gib block 3312 are pierced by corresponding first pilot hole 314 and the second pilot hole It is fixedly connected after 315 with the second end of feeding gate plate 32；First gib block 3311 is transported in the first pilot hole 314 along linear reciprocation Dynamic, the second gib block 3312 is in the second pilot hole 315 along straight reciprocating motion, the first gib block 3311 and the second gib block 3312 move simultaneously and feeding gate plate 32 are driven to move, to change the first end of feeding gate plate 32 and the side in conveying channel 311 The size in the conveying gap 3113 formed between wall changes the open degree in conveying channel 311, reaches the mesh of adjustment powder carry amount 's.

More specifically, quantitative driving mechanism 33 further includes for driving flashboard impeller 331 to move as shown in Fig. 3 to Fig. 7 Driving motor 332, rotation gear 333 is fixed on the power output shaft of driving motor 332, be fixed in connecting rod 3313 with The flashboard for rotating the engagement connection of gear 333 pushes rack gear 334, and rotation gear 333 pushes rack gear 334 to engage connection to push away with flashboard Dynamic connecting rod 3313 drives feeding gate plate 32 to move back and forth with respect to material leakage pedestal 31.When needing to adjust the conveying capacity for changing powder, Start driving motor 332 to move, the power output shaft of driving motor 332 drives rotation gear 333 to rotate, and rotation gear 333 is again The flashboard being engaged with is pushed to push rack gear 334, flashboard pushes the connecting rod 3313 of rack gear 334 and flashboard impeller 331 fixed Connection, therefore, flashboard push the movement of rack gear 334 that entire flashboard impeller 331 can be driven to move, flashboard impeller 331 into one Motive force is passed to feeding gate plate 32 and moves feeding gate plate 32 with respect to material leakage pedestal 31 by step, in this way, driving motor 332, flashboard pushes rack gear 334, flashboard impeller 331 and feeding gate plate 32 4 to link, and starting driving motor 332 moves, Feeding gate plate 32 can be pushed to move.The clever structure of entire quantitatively driving mechanism 33, it is with higher between each structure to match It is right, and simply starting driving motor 332 is only needed to operate the adjustment that powder carry amount can be realized, strong operability uses It is very convenient.

More specifically, above-mentioned driving motor 332 is the stepper motor or servo electricity for being equipped with retarder (not shown) Machine, wherein stepper motor or servo motor can be fixed the rotation of angle according to a certain direction, when rotation, move Power output shaft being rotated step by step with fixed angle so, it is possible through control pulse number come pilot angle Displacement to control the displacement of feeding gate plate 32, and can also control motor rotation by control pulse frequency Velocity and acceleration accurately adjusts 32 movement speed of feeding gate plate to reach；In this way, selecting stepper motor or servo electricity Machine driving rotation gear 333 rotation can preferably guarantee 32 movement speed of feeding gate plate to drive feeding gate plate 32 mobile And the accuracy of distance, the accuracy of quantitative feed is improved as far as possible.Further, on stepper motor or servo motor Retarder is installed, i.e., retarder is installed between stepper motor or prime mover and working machine or executing agency of servo motor, Retarder mainly plays a part of to match revolving speed and transmits torque, to reduce the revolving speed of stepper motor, increases torque, to guarantee to drive Dynamic motor 332 (stepper motor or servo motor) still is able to provide feeding gate plate 32 mobile turn at the low rotational speed Square.

More specifically, being provided on powdering platform 10 as shown in Fig. 1, Fig. 3 and Fig. 4 for installing above-mentioned driving motor 332 mounting rack 12, driving motor 332 are installed on mounting rack 12, also, are additionally provided on mounting rack 12 and be can be used in adjusting The height adjustment plate 121 of the mounting height of driving motor 332 can adjust driving motor 332 by the height adjustment plate 121 Mounting height guarantees quantitative powder to preferably guarantee that rotation gear 333 and flashboard push the fitness between rack gear 334 Accuracy.

In the present embodiment, as shown in Figure 5 and Figure 6, if being connected with dry elasticity between connecting rod 3313 and material leakage pedestal 31 Part 34, and several elastic components 34 are arranged at intervals between connecting rod 3313 and material leakage pedestal 31.In connecting rod 3313 and material leakage base Elastic component 34 is connected between seat 31, and when driving motor 332 is not activated operation, which is in compressive state, At this point, the elastic component 34 under compressive state can generate elastic thrust, and formed between flashboard impeller 331 and feeding gate plate 32 One normality thrust, the normality thrust make flashboard impeller 331 have the trend moved towards the direction away from feeding gate plate 32, such as This, the first end stress of feeding gate plate 32 is simultaneously preferably connected in card interface 313, and conveying channel 311 is further improved Sealing effect.In addition, elastic component 34 makes flashboard impeller 331 have the trend moved towards the direction away from feeding gate plate 32, It can also make flashboard that rack gear 334 and rotation gear 333 be pushed to be in stress meshing state, which can effectively eliminate gear The backhaul engaged between rack gear is poor, guarantees the tightness of engagement, guarantees the accuracy of 311 open degree of conveying channel adjustment.

Specifically, as shown in Figure 5 and Figure 6, above-mentioned elastic component 34 is preferably pressure spring, second side edge of material leakage pedestal 31 On be arranged at intervals with several first pressure spring guide posts 341, be arranged at intervals with the second pressure spring guide post 342 in connecting rod 3313, each first Pressure spring guide post 341, each pressure spring and each second pressure spring guide post 342 correspond respectively, and the both ends of pressure spring are respectively sleeved at corresponding On first pressure spring guide post 341 and the second pressure spring guide post 342.One-to-one first pressure spring guide post 341 is set and the second pressure spring is led Column 342 fixes pressure spring, can either effectively fix pressure spring, while can also be oriented to for the compression and stretching of pressure spring, keep away Exempt from pressure spring to twist, feeding gate plate 32 is caused to occur skew during exercise, and cannot normally adjust opening for conveying channel 311 Qi Du.Also, pressure spring is uniformly arranged between connecting rod 3313 and material leakage pedestal 31, to guarantee driving motor 332 by driving force Feeding gate plate 32 uniformly is passed to, feeding gate plate 32 is avoided to answer discontinuity and occur skew during exercise, is guaranteed quantitative Feeding work is normally carried out.

In the present embodiment, as shown in figure 5 and figure 7, powder feeder device further includes powder guiding mechanism 40, powder guiding Mechanism 40 is fixed on the bottom surface of material leakage pedestal 31, and being provided on powdering platform 10 can move along the length direction of powdering platform 10 The powder entrance of dynamic scraper 11, powder guiding mechanism 40 is connected with conveying channel 311, and the powder of powder guiding mechanism 40 goes out Mouth extends to the moving direction of scraper 11.Powder guiding mechanism 40 is set between conveying channel 311 and powdering platform 10, from material The powder being discharged in storehouse 20 enters in powder guiding mechanism 40 after conveying channel 311 is discharged, then via powder guiding mechanism 40 It is emitted on powdering platform 10, such as the front (along moving direction) of scraper 11, subsequent scraper 11 is along the length side of powdering platform 10 To movement, and powder is evenly laid out on powdering platform 10.

Specifically, such as Fig. 5 and Fig. 7, powder guiding mechanism 40 includes for the lower plate 41 of support powder and for preventing The upper cover plate 42 that powder raises, the first end of lower plate 41 are fixed on the bottom surface of material leakage pedestal 31, and powder is through conveying channel 311 It is transported to after output on lower plate 41, the second end of lower plate 41 extends to the front of scraper 11, for positioning powder It is delivered to specified position, the fixed point conveying of powder is can be realized, improves the accuracy of powder carry；Upper cover plate 42 is covered on The powder carry space 43 for setting and forming conveying powder is enclosed on lower plate 41 and with lower plate 41, setting upper cover plate 42 covers powder, It can effectively prevent tiny powder to raise, avoid waste powder and powder dust pollution environment.

In the present embodiment, as shown in figures 3 and 8, powder feeder device further includes smooth for improving the feed of powder The vibrator 50 of property, vibrator 50 are installed on feed bin 20.Specifically, vibrator 50 is mounted on the powder supply room 23 of feed bin 20 Lateral wall on, convey powder when, starting vibrator 50 vibration drive the also synchronous vibration of feed bin 20, in such manner, it is possible to improve feed bin The smoothness of 20 dischargings, it is excessive and make to avoid the occurrence of frictional force between 20 discharge port of feed bin, 231 putty or feed bin 20 and powder Powder cannot smooth the case where conveying down.Specifically, vibrator 50 herein is the vibrating motor that can adjust vibration amplitude, The either adjustable ultrasonic vibrator 50 of power.

In the present embodiment, as depicted in figs. 1 and 2, identical 20 He of feed bin of two groups of structures is provided on powdering platform 10 Automatic leakage mechanism 30, and two groups of feed bins 20 and automatic leakage mechanism 30 are symmetrically disposed on the opposite sides portion of powdering platform 10 Top, the i.e. left and right sides of powdering platform 10 are provided with feed bin 20 and automatic leakage mechanism 30, i.e. the powder of the present embodiment is sent Material device can be achieved at the same time unilateral feed and bilateral feed.

Specifically, as shown in Figures 1 to 5, the unilateral Charge motion implementation process of the powder feeding device of the present embodiment are as follows: The automatic leakage mechanism 30 in the left side of powdering platform 10 (right side) is set to by the powder carry in feed bin 20 to powdering platform 10, Powder specifically be can be behind the conveying channel 311 of material leakage pedestal 31 quantitatively output, extremely by the positioning of powder guiding mechanism 40 output The right side (left side) of scraper 11, powder carry in place after, scraper 11 along powdering platform 10 length direction to the right (to the left) move, And powder is uniformly layed on powdering platform 10 so that printing uses；After printing completes one layer, scraper 11 is returned to initial bit Set the feeding movement for carrying out next round；I.e. unilateral feed needs to be arranged printing to carry out with feed interval, and printing effect hardly results in It is effective to be promoted.

Bilateral Charge motion implementation process is then are as follows: is set to the automatic leakage mechanism 30 in the left side of powdering platform 10 for feed bin 20 On interior powder carry to powdering platform 10, powder specifically can be behind the conveying channel 311 of material leakage pedestal 31 quantitatively output, By the positioning output of powder guiding mechanism 40 to the right side of scraper 11, powder carry in place after, length of the scraper 11 along powdering platform 10 Degree direction moves right, and powder is uniformly layed on powdering platform 10 so that printing uses；While printer prints, if Conveying channel 311 of the powder being placed in the feed bin 20 on 10 right side of powdering platform equally through corresponding material leakage pedestal 31 quantitatively exports Afterwards, by the positioning output of powder guiding mechanism 40 to the left side of scraper 11, after last round of printing, scraper 11 is transported to the left It is dynamic, and powder is laid on powdering platform 10, so that the printing of the second wheel uses, after scraper 11 returns to left side initial position, Powder in left side feed bin 20 is transported to the right side of scraper 11 again, is prepared as the printing feed of third round；In this way, bilateral feed It can be realized and be fed while printing, compared to for the printing of side, printing effect is higher.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of powder feeder device, including powdering platform and the top positioned at the powdering platform and material for holding powder Storehouse, it is characterised in that:

The powder feeder device further include for by the powder carry in the feed bin to the powdering platform from Dynamic material leakage mechanism, the automatic leakage mechanism include the material leakage pedestal for being fixed on the bottom surface of the feed bin, are arranged in the leakage The quantitative driving assembly expecting the feeding gate plate in pedestal and being connected with the feeding gate plate；

It is offered in the material leakage pedestal for by the conveying channel on the powder carry to the powdering platform, it is described quantitative Driving assembly drives the relatively described material leakage pedestal of the feeding gate plate to move back and forth to change the open degree in the conveying channel simultaneously Control the amount of the powder exported through the conveying channel.

2. powder feeder device according to claim 1, it is characterised in that: the material leakage pedestal is upper with being oppositely arranged Surface and bottom surface and the first side portion being oppositely arranged and second side edge, the setting of feed bin described in the upper surface face, The conveying channel penetrates through the upper surface and the bottom surface, and the first side portion of the material leakage pedestal offers to be sent described in confession Material flashboard wears the mouth that wears to the material leakage pedestal, and the first end of the feeding gate plate wears a mouthful rear overhang described in and is set to In the conveying channel, the second end of the feeding gate plate is located at the outside of the material leakage pedestal, and the quantitative driving assembly connects It is connected to second side edge and for driving the first end of the feeding gate plate to move back and forth in the conveying channel to change Become the open degree in the conveying channel.

3. powder feeder device according to claim 2, it is characterised in that: the conveying channel is close to the second side The inner sidewall in portion towards second side edge concave shape at the card interface for having the first end for being clamped the feeding gate plate, it is described Quantitative driving assembly drives that the first end of the feeding gate plate is connected in the card interface or the quantitative driving assembly drives The first end for moving the feeding gate plate deviates from the card interface.

4. powder feeder device according to claim 3, it is characterised in that: the first end of the feeding gate plate is provided with close Cushion is sealed, the Sealing cushion pad is elastic buffering pad.

5. powder feeder device according to claim 2, it is characterised in that:

The quantitative driving assembly includes the lock for being fixedly connected with the feeding gate plate and being used to push the feeding gate plate movement Plate impeller, the flashboard impeller include the first gib block, the second gib block and are connected to first gib block and described Connecting rod between second gib block, the opposite both ends of the material leakage pedestal offer respectively for first gib block and The first pilot hole and the second pilot hole that second gib block is worn, first gib block and second gib block are pierced by It is fixedly connected after corresponding first pilot hole and second pilot hole with the second end of the feeding gate plate；

The quantitative driving assembly further includes the driving motor for driving the flashboard impeller movement, the driving motor It is fixed with rotation gear on power output shaft, the flashboard for engaging connection with the rotation gear is fixed in the connecting rod and is pushed Rack gear, the rotation gear push rack gear to engage connection to push the connecting rod to drive the feeding gate plate phase with the flashboard The material leakage pedestal is moved back and forth.

6. powder feeder device according to claim 5, it is characterised in that: between the connecting rod and the material leakage pedestal Several elastic components are connected with, and several elastic components are arranged at intervals between the connecting rod and the material leakage pedestal.

7. powder feeder device according to claim 6, it is characterised in that: the elastic component is pressure spring, described second side It is arranged at intervals with several first pressure spring guide posts in edge, several second pressure spring guide posts, each institute are arranged at intervals in the connecting rod It states the first pressure spring guide post, each pressure spring and each second pressure spring guide post to correspond respectively, the both ends difference of the pressure spring It is set on the corresponding first pressure spring guide post and the second pressure spring guide post.

8. powder feeder device according to claim 1, it is characterised in that: the powder feeder device further includes that powder is led To mechanism, the powder guiding mechanism is fixed on the bottom surface of the material leakage pedestal, and being provided on the powdering platform being capable of edge The mobile scraper of the length direction of the powdering platform, the powder entrance of the powder guiding mechanism are connected with the conveying channel Logical, the powder outlet of the powder guiding mechanism extends to the moving direction of the scraper.

9. powder feeder device according to claim 1, it is characterised in that: the powder feeder device further includes for mentioning The vibrator of the feed smoothness of the high powder, the vibrator are installed on the feed bin.

10. described in any item powder feeder devices according to claim 1~9, it is characterised in that: be arranged on the powdering platform There are the identical feed bin of two groups of structures and the automatic leakage mechanism, and feed bin described in two groups and the automatic leakage mechanism pair Claim the top for being set to the opposite both sides of the powdering platform.