CN207579110U

CN207579110U - A kind of powdering system and 3D printer

Info

Publication number: CN207579110U
Application number: CN201721695089.3U
Authority: CN
Inventors: 窦鹤鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-07
Filing date: 2017-12-07
Publication date: 2018-07-06
Anticipated expiration: 2027-12-07

Abstract

The utility model is related to 3D printing apparatus fields, disclose a kind of powdering system and 3D printer.Powdering system includes power spreading device, driving first driving mechanism of the power spreading device in print platform upper direction and the powder feeding cylinder above print platform.Power spreading device includes the powdering cylinder with meal outlet and the flat powder portion for smoothing out powder, the lower end in flat powder portion are parallel with the upper planar horizontal of print platform.The 3D printer of the utility model is provided with above-mentioned powdering system.When power spreading device moves above print platform and carries out powdering, printed material (powder) in powdering cylinder can be sent out from meal outlet, it is laid on the platform surface of print platform, the flat powder portion being then set to thereafter can smooth out these powders rapidly, form working face.Powder feeding cylinder is used to supplement powder to powdering cylinder.Chu Fen, powdering, the function of floating are integrated in one, and compact-sized on the whole, working efficiency is high.

Description

A kind of powdering system and 3D printer

Technical field

The utility model is related to 3D printing apparatus field, in particular to a kind of powdering system and 3D printer.

Background technology

3D printer is also known as three-dimensional printer (3DP), is a kind of cumulative manufacturing technology, i.e. a kind of machine of RP technique Device, it is a kind of based on digital model file (CAD), and material can be bonded with special wax material, powdery metal or plastic etc. Material is made by printing a layer of adhesive material the technology of three-dimension object.Three-dimensional printer is used to manufacture production at this stage Product.Some systems use the technology of " laser sintered ", using powder particle as print media.Powder particle is laid on mold support Certain thickness powder bed is formed on disk, by laser casting into designated shape.In process of deployment, powder should uniformly be spread On print platform, the effect of printing otherwise can be influenced.Using existing equipment, for powder, the operation smoothed out implement compared with To be cumbersome, and it is ineffective.

Utility model content

It is compact-sized the purpose of this utility model is to provide a kind of powdering system, it can automatically, efficiently realize Powdering operation is carried out on the platform surface of the print platform of 3D printer, and powdering is uniform.

The another object of the utility model is to provide a kind of 3D printer, compact-sized, can automatically, efficiently into Row powdering operates, and powdering is uniform, is conducive to simplify process, improves product quality.

What the embodiment of the utility model was realized in：

A kind of powdering system, including：

Power spreading device, power spreading device are included for the powdering cylinder for containing dusty material and flat powder portion, and flat powder portion is flat powder Brush or flat powder roller, powdering cylinder have the meal outlet for being laid with powder to print platform, and flat powder portion is used for being laid on printing Powder on platform smoothes out to form working face；

For the first driving mechanism that power spreading device is driven to be moved above working face；

The powder feeding cylinder being set to above print platform, powder feeding cylinder are provided with powder feeding mouth, and powder feeding mouth is provided with the second headstock gear Structure, for the second mechanism for opening/closing of powder feeding mouth for being turned on and off powder feeding mouth, powder feeding mouth is used to the powder in powder feeding cylinder be transported to In powdering cylinder.

In a kind of embodiment of the utility model：

First driving mechanism includes the track that linearly extends, and power spreading device matches that merge can be in track with track It is moved on extending direction.

In a kind of embodiment of the utility model：

First driving mechanism is used to that power spreading device to be driven to move in a circumferential direction.

In a kind of embodiment of the utility model：

Power spreading device includes two meal outlets, and two meal outlets are arranged at intervals in the direction of motion of power spreading device, flat powder Portion is located between two meal outlets.

In a kind of embodiment of the utility model：

Power spreading device includes two flat powder portions, and two flat powder portions are arranged at intervals in the direction of motion of power spreading device, go out powder Mouth is located between two flat powder portions.

In a kind of embodiment of the utility model：

Be provided with the first mechanism for opening/closing on meal outlet, the first mechanism for opening/closing include being movably connected on the closeouts of powdering cylinder with And for closeouts to be driven to open or close the second driving mechanism of meal outlet.

In a kind of embodiment of the utility model：

Powdering system includes at least two powder feeding cylinders, and powder feeding cylinder is fixed at the top of print platform.

In a kind of embodiment of the utility model：

First driving mechanism includes turntable and the first driving portion for driving disc rotation；Power spreading device turns with turntable It is dynamic to connect, third driving mechanism is provided on turntable, third driving mechanism makes for power spreading device to be driven to be rotated relative to turntable It can extend to above print platform or be withdrawn above print platform.

In a kind of embodiment of the utility model：

Strip is in flat powder portion and is horizontally parallel to plane on print platform, and the flat one end of powder portion far from turntable is radially-inwardly curved Song, forms hook-shaped collection powder portion, and collection powder portion is used to storing flat powder portion and smoothes out excessive powder after powder on working face.

A kind of 3D printer, including above-mentioned powdering system.

The advantageous effect of the utility model embodiment is：

The powdering system of the utility model embodiment includes power spreading device, driving power spreading device moves on print platform Powder feeding cylinder above first driving mechanism and print platform.Power spreading device includes powdering cylinder and flat powder with meal outlet Portion, flat powder portion are used to that the powder being layed on print platform to be smoothed out to form working face, the lower end in flat powder portion and print platform On working face abut it is parallel.When power spreading device moves above print platform and carries out powdering, the printing material in powdering cylinder Material (powder) can be sent out from meal outlet, be laid on the platform surface of print platform or the work that is formed of last time powdering operation Make on face, then followed by flat powder portion these powder can be smoothed out to form new working face.Powder feeding cylinder is used for powdering Supplement powder in cylinder.Chu Fen, powdering, the function of floating are integrated in one, and compact-sized on the whole, working efficiency is high.

The 3D printer of the utility model embodiment is provided with above-mentioned powdering system, therefore also has above-mentioned beneficial effect Fruit.

Description of the drawings

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structure diagram of the powdering system of the utility model embodiment 1；

Fig. 2 is the power spreading device of the utility model embodiment 1 and the cooperation schematic diagram of track；

Fig. 3 is the structure diagram of the power spreading device of the utility model embodiment 1；

Fig. 4 is a kind of deformation of the power spreading device of the utility model embodiment 1；

Fig. 5 is the structure diagram of the 3D printer of the utility model embodiment 1；

Fig. 6 is arrangement schematic diagram of the powdering system of the utility model embodiment 2 on 3D printer；

Fig. 7 is the schematic diagram of the third driving mechanism of the utility model embodiment 2；

Fig. 8 is the structure diagram of the power spreading device of the utility model embodiment 2；

Fig. 9 is a kind of deformation of the mounting portion of the utility model embodiment 2；

Figure 10 is the arrangement schematic diagram of the powder feeding cylinder of the utility model embodiment 2.

Icon：100- powdering systems；101- platform surfaces；110- power spreading devices；111- powdering cylinders；111a- meal outlets； 111b- powder inlets；The flat powder portions of 112-；113- mounting brackets；114- sliding slots；The first mechanism for opening/closing of 115-；The second driving portions of 116-； 117- closeouts；The first driving portions of 120-；122- followers；124- conveyer belts；126- tracks；127- protrusions；130- powder feeding cylinders； The second mechanism for opening/closing of 132-；200-3D printers；210- print platforms；212- collection powder cylinders；300- powdering systems；310- powderings fill It puts；311- powdering cylinders；311a- meal outlets；The flat powder portions of 312-；313- mounting brackets；320- turntables；322- fixed seats；324- is installed Portion；330- third driving portions；332- driving gears；334- axis bodies；336- driven gears；340- collection powder portion；350- powder feeding cylinders； 400-3D printers；410- print platforms；412- collection powder cylinders.

Specific embodiment

Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of different.

Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all Belong to the range of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.

In the description of the utility model embodiment, it should be noted that term " on ", " under ", "left", "right", " perpendicular Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship or The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", " third " etc. are only used for area Divide description, and it is not intended that instruction or hint relative importance.

In addition, the terms such as term " level ", " vertical " are not offered as requiring component abswolute level or pendency, but can be slightly Low dip.It is not to represent that the structure has been had to if " level " only refers to that its direction is more horizontal with respect to for " vertical " It is complete horizontal, but can be slightly tilted.

In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art Language " setting ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably Connection is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, centre can also be passed through Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings Condition understands concrete meaning of the above-mentioned term in the utility model embodiment.

Embodiment 1

Fig. 1 is the structure diagram of the powdering system 100 of the utility model embodiment 1.Fig. 1 is please referred to, the present embodiment carries For a kind of powdering system 100, including power spreading device 110, the driving power spreading device above print platform 210 (see Fig. 5) 110 the first driving mechanisms moved above platform surface 101 and the powder feeding above the plane of movement of power spreading device 110 Cylinder 130.Powder feeding cylinder 130 simultaneously can supply printed material for the material needed for storage print to power spreading device 110.In this implementation In example, printed material is powder material, and powder when being moved on platform surface 101 can be discharged into and beat by power spreading device 110 It prints on platform 210, the flat powder portion 112 on power spreading device 110 can smooth out powder, and the upper surface of powder forms working face, makes Powder is at preferable print state during follow-up printing, improves product quality.It designs through this structure, will have storage Powder, powdering powdering system 100 integrate after be wholy set in the top of platform surface 101, printing device can be effectively reduced Overall volume, improve working efficiency.

In the present embodiment, the first driving mechanism includes the first driving portion 120, follower 122, is sequentially connected and is driven in first Move the conveyer belt 124 between portion 120 and follower 122 and the track 126 linearly extended, power spreading device 110 and rail Road 126 can complete powdering behaviour during the motion with merging and can back and forth be moved in a straight line on the extending direction of track 126 Make.Conveyer belt 124 is connected with power spreading device 110, and power spreading device 110 can be pulled to be moved on track 126.First driving Portion 120 is stepper motor, drives the rotation of belt wheel, follower 122 be set to one near 126 other end of track from Movable belt pulley, two belt wheels are near the both ends of track 126 and conveyer belt 124 is enabled to be parallel to track 126.It should manage Solution, in the other embodiment of the utility model, the first driving mechanism can also use other transmissions such as chain drive, rack-driving Mode, corresponding, the belt wheel in the present embodiment should replace with sprocket wheel, rack etc. accordingly, the conveyer belt 124 in the present embodiment Chain, rack etc. should correspondingly be replaced with.

Fig. 2 is the power spreading device 110 of the utility model embodiment 1 and the cooperation schematic diagram of track 126.Please refer to Fig. 1 and Fig. 2 in the present embodiment, in order to ensure the stability during movement of power spreading device 110, parallel two is set on platform surface 101 Track 126, the both sides in the movement direction of power spreading device 110 coordinate respectively with track 126.Correspondingly, two tracks 126 Both sides distinguish each one conveyer belt 124 driven by the first driving portion 120 of correspondence, enable the first driving mechanism from powdering fill The both sides for putting 110 apply drag force to drive power spreading device 110.

Fig. 3 is the structure diagram of the power spreading device 110 of the utility model embodiment 1.Fig. 1 and Fig. 3 are please referred to, in this reality It applies in example, power spreading device 110 includes containing the powdering cylinder 111 of dusty material and being set to the flat powder portion of powdering cylinder 111 112, powdering cylinder 111 has for the meal outlet 111a to the platform surface 101 of print platform 210 for powder, under flat powder portion 112 End and 101 horizontal parallel of platform surface of print platform 210 so that the swiped through powder in flat powder portion 112 has uniform certain thick Degree, the thickness is consistent with current work layer thickness, and the powder upper surface after being smoothed out by flat powder portion 112 is working face, printing dress The powder progress print job of working face can be directed to by putting (not shown).The flat powder portion 112 of the present embodiment, which is one, has bristle Flat rendering, powder is smoothed out by bristle directed downwardly, and in the other embodiment of the utility model, flat powder portion 112 can To make certain change, for example its bristle is readily modified as a scraping blade, the downside of scraping blade is parallel with working face abutting；Or flat powder Portion 112 is set as a flat powder roller, and the lower end parallel surface of flat powder roller is horizontally parallel to platform surface 101.

In the present embodiment, powdering cylinder 111 has the two chambers separated in the movement direction, the top tool of two chambers There are powder inlet 111b, powder inlet 111b to be used to catch the powder from the feeding port submitting of 130 bottom of powder feeding cylinder.The bottom of two chambers Meal outlet 111a, two meal outlet 111a to be arranged at intervals in the direction of motion of power spreading device 110 there are one portion is each, flat powder portion 112 are located between two meal outlet 111a.Power spreading device 110 can be caused in left and right (being subject to shown in Fig. 1) movement in this way Blanking, floating, the work for collecting powder can be completed.For example, when moving right, powdering is carried out using the meal outlet 111a on right side, The meal outlet 111a in left side is closed, and then the powder that the meal outlet 111a on right side is fallen will be smoothed out by flat powder portion 112, be reached The effect being uniformly laid with.Similarly, when power spreading device 110 is to left movement, the meal outlet 111a in left side carries out powdering, flat powder portion 112 also can in time smooth out powder.Powdering back and forth in this way, without the position for turning flat powder portion 112 can be completed floating and Collect powder operation, efficiency is significantly improved.

In order to be fed in time to the powder of two chambers, two powder feeding cylinders 130 are respectively arranged at 126 both ends of track Top, and being fixedly mounted so that powdering cylinder 111 moves to left when being at the end, on the right side of chamber powder inlet 111b be located just at left side Below the feeding port of powder feeding cylinder 130；When powdering cylinder 111 is shifted to the right to 126 end of track, the powder inlet 111b of left chamber is just Positioned at the lower section of 130 feeding port of right side powder feeding cylinder.In the other embodiment of the utility model, the two chambers of powdering cylinder 111 It can also be combined into one, centre need not separate, and two meal outlet 111a share the powder of entire chamber.

In the other embodiment of the utility model, the structure of power spreading device 110 can be changed, and Fig. 4 is this practicality A kind of deformation of the power spreading device 110 of new embodiment 1.Fig. 4 is please referred to, powdering cylinder 111 can only set a meal outlet The flat powder portion 112 of each side setting one of 111a, meal outlet 111a, such structure also may be implemented in left and right both direction Powdering is carried out during movement, during to left movement, the flat powder portion 112 on right side is smoothed out；And when moving right, the flat powder portion in left side 112 are smoothed out.It is identical with the effect of the present embodiment, also achieve both direction powdering, and the side without adjusting flat powder portion 112 Position.It should be noted that when power spreading device 110 starts powdering operation, the work surface of plane is not formed on print platform 210, The area of pre-formed working face is less than platform surface 101 on print platform 210 at this time, after power spreading device 110 starts work, nothing By leftward or rightward operation, front in advance by flat powder portion 112 all do not interfere with powdering peace powder operation behind.

Incorporated by reference to Fig. 1 to Fig. 3, in the present embodiment, flat powder portion 112 is fixed on mounting bracket 113, the installation of the present embodiment Frame 113 is bar shaped, and extends to the both sides of 110 direction of motion of power spreading device that the downside of mounting bracket 113 is fixed in flat powder portion 112, Its bristle is downward.The both ends of mounting bracket 113 are respectively arranged with a sliding part, and sliding part has downward opening sliding slot 114, sliding Slot 114 coordinates with the protrusion 127 to raise up on track 126, and protrusion 127 extends, and and track along the length direction of track 126 126 is isometric.In the present embodiment, in order to which power spreading device 110 is made to be not easy to come off from track 126, from the point of view of section, protrusion 127 Upper end has the clamping portion there are one triangle, and the width of clamping portion is more than the width of 127 bottom end of protrusion so as to make entire protrusion 127 Section formed a upward arrow-shaped.It should be appreciated that in the other embodiment of the utility model, protrusion 127 and sliding slot 114 shape can make some changes, for example be designed as the sliding slot 114 of swallow-tail form and protrusion 127；And it is possible to change protrusion 127 and the installation position of sliding slot 114, protrusion 127 is set to sliding part, and sliding slot 114 is set to track 126.

In the present embodiment, there is the first mechanism for opening/closing 115 at the meal outlet 111a of powdering cylinder 111, for opening or Meal outlet 111a is closed, powder is freely supplied to realize.In the present embodiment, the first mechanism for opening/closing 115 includes being rotationally connected with powdering Closeouts 117 of cylinder 111 and for closeouts 117 to be driven to open or close the second driving mechanism of meal outlet 111a.Into One step, meal outlet 111a is the strip opening perpendicular to 110 direction of motion of power spreading device, correspondingly, closeouts 117 are one The sealing plate of strip, the side of closeouts 117 are fixedly connected with a shaft, and shaft is rotatably coupled with powdering cylinder 111, when turn When shaft rotation is moved, closeouts 117 can follow rotation to open or close meal outlet 111a.Second driving mechanism includes being fixed on The drive sprocket and be set in shaft that second driving portion 116 of powdering cylinder 111 and the second driving portion 116 are sequentially connected One driven sprocket, is driven between drive sprocket and driven sprocket by chain.It should be appreciated that the utility model other In embodiment, the second driving mechanism drive shaft can also rotate, such as the second driving machine passes through V belt translation by other means Or gear engaged transmission drive shaft rotation.

In order to which the feeding port for making powder feeding cylinder 130 has the function of automatic shutter, the second mechanism for opening/closing is provided at feeding port 132, second mechanism for opening/closing 132 of the present embodiment is no longer superfluous herein structurally and functionally similar with the first mechanism for opening/closing 115 It states.

In the present embodiment, two tracks 126 are made of metal material, thus conductive.Two tracks 126 are distinguished Power supply (not shown) and respectively anode and cathode are electrically connected to, track 126 can provide electric power to the first driving mechanism.It should Understand, in the other embodiment of the utility model, track 126 can also be partly made of metal, and metal part serves as electricity Conductor, and rest part is set as insulating materials to ensure safety.

Fig. 5 is the structure diagram of the 3D printer 200 of the utility model embodiment 1.Fig. 5 is please referred to, the present embodiment carries For a kind of 3D printer 200,3D printer 200 includes print platform 210, the printing dress for being set to 210 top of print platform It puts (not shown) and is set to the powdering system 100 of 210 top of print platform.101 top of platform surface of print platform 210 There are two collection powder cylinders 212 for setting, and two collection powder cylinders 212 are respectively positioned at the both ends of 126 extending direction of track so that flat powder portion 112 When being moved to left end or right end with power spreading device 110, extra powder can be swept into collection powder cylinder 212 and gathered up Come, be conducive to reusing for powder.

The power spreading device 110 of the present embodiment and the operation principle of 3D printer 200 are：

Power spreading device 110 linear movement and back and forth powdering back and forth above platform surface 101, follow meal outlet 111a's closely Flat powder portion 112 can in time smooth out powder, and extra powder can be collected into collection powder by while being at the end to the movement of direction In cylinder 212.Power spreading device 110 moves powdering from one end of track 126 to the other end, when being at the end, can utilize powdering cylinder 111 The powder feeding cylinder 130 of top carries out powder supply, and printing equipment can carry out printing on powder after the completion of powdering.Complete the After one layer of printing, the height of print platform 210 is reduced, then carries out subsequent powdering and printing, is recycled with this.Such powdering dress Put 110 and 3D printer 200 by store up powder, powdering, flat powder, collect powder relevant device integrate, and be set to print platform 210 top makes equipment compacter, increases space availability ratio.And overall performance is stablized, powdering that can be back and forth, work Make more efficient.

Embodiment 2

Fig. 6 is arrangement schematic diagram of the powdering system 300 of the utility model embodiment 2 on 3D printer 400.It please refers to Figure, the present embodiment provides a kind of powdering system 300 and 3D printer 400, the powdering system 300 of the present embodiment is used to be set to tool Have on the print platform 410 on ring-shaped platform surface 101.Powdering system 300 include the first driving mechanism, third driving mechanism and Power spreading device 310.Third driving mechanism is set in the first driving mechanism, and power spreading device 310 connects with the transmission of third driving mechanism It connects so that the first driving mechanism can drive third driving mechanism and power spreading device 310 to turn above print platform 410 together It is dynamic；And third driving mechanism can be further driven to power spreading device 310 and be rotated relative to the first driving mechanism.The 3D of the present embodiment is beaten Print machine 400 includes the print platform 410 with platform surface 101, the collection powder cylinder 412 on the inside of platform surface 101 and platform table The printing equipment (not shown) of 101 top of face.

In the present embodiment, the first driving portion that the first driving mechanism includes turntable 320 and driving disc 320 rotates (not shown), the plane where turntable 320 are parallel with 410 platform surface 101 of print platform.In the present embodiment, in order to make turn It can preferably be rotatably assorted between disk 320 and print platform 410, the bottom of turntable 320 is provided with idler wheel (not shown), and One driving portion is stepper motor in the present embodiment.

In the present embodiment, turntable 320 is located at 101 inside of platform surface of annular, and is coaxial therewith setting.On turntable 320 Edge is provided with fixed seat 322, fixed seat 322 is used to be rotatablely connected with power spreading device 310 so that power spreading device 310 It can be rotated relative to turntable 320, to realize that power spreading device 310 can be stuck on platform surface 101 or from platform surface 101 tops are withdrawn.

Fig. 7 is the schematic diagram of the third driving mechanism of the utility model embodiment 2.Fig. 6 and Fig. 7 are please referred to, in this implementation In example, mounting portion 324 there are two settings, two mounting portions 324 are protruded to horizontal direction, and in height side in fixed seat 322 It is arranged at intervals upwards.The free end of two mounting portions 324 has the through-hole penetrated through vertically, for being cut with scissors with power spreading device 310 It connects.

Fig. 8 is the structure diagram of the power spreading device 310 of the utility model embodiment 2.Fig. 6 to Fig. 8 is please referred to, in this reality It applies in example, power spreading device 310 includes powdering cylinder 311 and the flat powder portion 312 being fixedly connected with powdering cylinder 311, flat powder portion 312 Mounting bracket 313 including a bar shaped, bristle are set to mounting bracket 313 and under, and powdering cylinder 311 is fixed with mounting bracket 313. In the present embodiment, mounting bracket 313 is longer than powdering cylinder 311 and (is herein referred in the size radially of circular path in platform surface 101 tops, under in running order), the one end of mounting bracket 313 on the inside of circular path extends radially inwardly, and passes through one Axis body 334 is articulated between two mounting portions 324.Third driving mechanism includes being set to the axis body of 313 inner opposite end of mounting bracket 334th, the driven gear 336, third driving portion 330 and the master being connect with the shaft of third driving portion 330 of axis body 334 are set to Moving gear 332.The end of mounting bracket 313 has notch, and axis body 334 runs through notch both sides, and the part in notch is fixed and set Put driven gear 336.Axis body 334 is fixedly connected with mounting bracket 313, and both ends protrude from the both sides of 313 length direction of mounting bracket, Two ends and the through-hole of mounting portion 324 are hinged.Driven gear 336 is relatively fixed with axis body 334, and third driving portion 330 is fixed It is set to turntable 320 and driving gear 332 can be driven to rotate.Driving gear 332 is engaged with driven gear 336 so that third Driving portion 330 can drive mounting bracket 313 that powdering cylinder 311 is driven to be rotated relative to turntable 320.In the present embodiment, third drives Portion 330 is stepper motor, it should be appreciated that in other embodiments, third driving portion 330 or other kinds of motor.

In the other embodiment of the utility model, axis body 334 can also be vertical direction through mounting portion 324, installation The bolt of frame 313, and fixed also cross driven gear 336 and with driven gear 336, and come tightly using nut and bolt cooperation Gu bolt and driven gear 336 is made to be fixed relative to mounting bracket 313.Fig. 9 is the mounting portion 324 of the utility model embodiment 2 A kind of deformation please refers to Fig. 9, and under such circumstances, the free end of mounting portion 324 could be provided as bearing, bolt in bearing Circle is fixed, and mounting portion 324 is fixed with bearing outer ring, is achieved in mounting bracket 313 and rotated around mounting portion 324.

In the present embodiment, powdering cylinder 311 sets a meal outlet 311a, and meal outlet 311a is relative to flat 312, powder portion In the front of the direction of motion so that the powder that meal outlet 311a is sent out can be smoothed out by flat powder portion 312 in time.With embodiment 1 In it is similar, double cavity structures in embodiment 1 are only set as single cavity structure, and only there are one the meal outlets of bar shaped for tool 311a.Equally, the meal outlet 311a of the present embodiment is switched also by identical mechanism for opening/closing to realize, and the mechanism for opening/closing and electricity Source (not shown) connection, is herein no longer illustrated the concrete structure of the mechanism for opening/closing.

Strip is in flat powder portion 312 and is parallel to platform surface 101, and the flat one end of powder portion 312 far from turntable 320 is from radially It beyond the outside of power spreading device 310, and is bent radially inward, forms hook-shaped collection powder portion 340.When third driving portion 330 drives When power spreading device 310 rotates to withdraw from platform surface 101 relative to turntable 320, collection powder portion 340 can preferably will be more Remaining powder is collected from print platform 410 to collection powder cylinder 412.Collection powder 412 groove body for annular of cylinder in the present embodiment, It is set between turntable 320 and platform surface 101, when power spreading device 310 is withdrawn, flat powder portion 312 can receive extra powder Collect in powder cylinder 412, in case reusing.

In the present embodiment, there are four power spreading device 310 and corresponding first driving mechanism, for connection on turntable 320 Two driving mechanisms.In the other embodiment of the utility model, the number of power spreading device 310 can be increased and decreased.Figure 10 is this The arrangement schematic diagram of the powder feeding cylinder 350 of utility model embodiment 2.Figure 10 is referred to, powdering system 300, which further includes, to be set in ring Four powder feeding cylinders 350 of 101 top of shape platform surface, four powder feeding cylinders 350 are corresponding with four power spreading devices 310 respectively.With reality It is similar to apply function in example 1, powder feeding cylinder 350 can store up powder and be retracted to turntable from print platform 410 in power spreading device 310 When on 320, appropriate powder is provided into powdering cylinder 311.

The powdering system 300 of the present embodiment and the operation principle of 3D printer 400 are：

Turntable 320 drives the movement on the platform surface 101 of annular of 4 power spreading devices 310 to carry out powdering.Power spreading device 310 are sequentially connected with turntable 320 by third driving mechanism so that and power spreading device 310 can be rotated relative to turntable 320, because This third driving mechanism can control power spreading device 310 to lean out with being received on platform surface 101 or above platform surface 101 It returns so that printing equipment prints powder.When power spreading device 310 is withdrawn, the collection powder portion 340 of flat 312 free end of powder portion can Powder " is caught ", preferably collects extra powder into collection powder cylinder 412.The powdering system 300 of the present embodiment is suitable for Printer with ring-shaped platform surface 101, powdering, flat powder, collect excessive powder function be integrated in one, structure is tight It gathers, working efficiency is high.

In conclusion the powdering system of the utility model embodiment includes power spreading device and driving power spreading device is printing The first driving mechanism moved on platform.Power spreading device includes the powdering cylinder with meal outlet and the flat powder for smoothing out powder Portion, the lower end in flat powder portion and the platform surface horizontal parallel of print platform.When power spreading device, movement is gone forward side by side above print platform During row powdering, the printed material (powder) in powdering cylinder can be sent out from meal outlet, be laid on print platform platform surface or On the working face that person's last time powdering operation is formed, then followed by flat powder portion these powders can be smoothed out, formed New working face.Powdering, the function of smoothing out are integrated in one, compact-sized on the whole, and working efficiency is high.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims

1. a kind of powdering system, which is characterized in that the powdering system includes：

Power spreading device, the power spreading device are included for the powdering cylinder for containing dusty material and flat powder portion, and the flat powder portion is Flat rendering or flat powder roller, the powdering cylinder have the meal outlet for being laid with powder to print platform, and the flat powder portion is used for The powder being laid on the print platform is smoothed out to form working face；

For the first driving mechanism that the power spreading device is driven to be moved above the working face；

The powder feeding cylinder being set to above the print platform, the powder feeding cylinder are provided with powder feeding mouth, and the powder feeding mouth is provided with Two mechanism for opening/closing, second mechanism for opening/closing of the powder feeding mouth for being turned on and off the powder feeding mouth, use by the powder feeding mouth It is transported in powdering cylinder in the powder in powder feeding cylinder.

2. powdering system according to claim 1, it is characterised in that：

First driving mechanism includes the track that linearly extends, and the power spreading device matches that merge can with the track It is moved on the extending direction of the track.

3. powdering system according to claim 1, it is characterised in that：

First driving mechanism is used to that the power spreading device to be driven to move in a circumferential direction.

4. the powdering system according to Claims 2 or 3, it is characterised in that：

The power spreading device includes two meal outlets, between two meal outlets are in the direction of motion of the power spreading device Every setting, the flat powder portion is located between two meal outlets.

5. the powdering system according to Claims 2 or 3, it is characterised in that：

The power spreading device includes two flat powder portions, between two flat powder portions are in the direction of motion of the power spreading device Every setting, the meal outlet is located between two flat powder portions.

6. powdering system according to claim 1, it is characterised in that：

The first mechanism for opening/closing is provided on the meal outlet, first mechanism for opening/closing includes being movably connected on the powdering cylinder Closeouts and for the closeouts to be driven to open or close the second driving mechanism of the meal outlet.

7. powdering system according to claim 1, it is characterised in that：

The powdering system includes at least two powder feeding cylinders, and the powder feeding cylinder is fixed at the upper of the print platform Side.

8. powdering system according to claim 3, it is characterised in that：

First driving mechanism includes turntable and the first driving portion for driving the turntable rotation；The power spreading device It is rotatablely connected with the turntable, third driving mechanism is provided on the turntable, the third driving mechanism is described for driving Power spreading device is rotated relative to the turntable, can be extended to above the print platform or above the print platform It withdraws.

9. powdering system according to claim 8, it is characterised in that：

Strip is in the flat powder portion and is horizontally parallel to plane on the print platform, the flat powder portion far from the turntable one End is bent radially inward, and forms hook-shaped collection powder portion, described to collect powder portion for storing the work after the flat powder portion floating powder Make the excessive powder on face.

10. a kind of 3D printer, it is characterised in that：

It includes powdering system as claimed in any one of claims 1-9 wherein.