阅读说明：本技术 一种多材料水平梯度3d打印机精准供料装置 (Accurate feedway of many materials horizontal gradient 3D printer ) 是由 赵浩 赵志刚 李全贵 陈庆文 姜鑫 于 2021-04-27 设计创作，主要内容包括：本发明公开了一种多材料水平梯度3D打印机精准供料装置,包括安装基座、出料对接件、储料仓、水平混料器、混料驱动组件、供料活塞推板、往复推动组件、挡板驱动构件、供料挡板和出料挡板；本发明可通过改变供料活塞推板上的移料槽口的大小实现料粉的供料多少控制,通过供料挡板开合控制各种材料的精准配比,通过水平混料器对料粉进行充分混合,确保供料成分精确、材料配比稳定、均匀可靠。(The invention discloses a multi-material horizontal gradient 3D printer accurate feeding device which comprises a mounting base, a discharging butt joint part, a storage bin, a horizontal mixer, a mixing driving assembly, a feeding piston push plate, a reciprocating pushing assembly, a baffle driving member, a feeding baffle and a discharging baffle; the invention can realize the control of the feeding amount of the material powder by changing the size of the material moving notch on the feeding piston push plate, control the accurate proportioning of various materials by opening and closing the feeding baffle plate, and fully mix the material powder by the horizontal mixer, thereby ensuring the accurate feeding component, stable material proportioning, uniformity and reliability.)

1. The utility model provides an accurate feedway of many materials horizontal gradient 3D printer which characterized in that includes:

a mounting base (1);

a discharge butt joint piece (2); the discharge butt joint piece (2) is fixed on the top surface of the mounting base (1), and a movable gap is formed between the discharge butt joint piece and the top surface of the mounting base (1); the surface of the discharge butt joint piece (2) is provided with a material through notch (21);

a storage bin (3); the storage bin (3) is detachably connected to the top surface of the discharging butt joint piece (2), and the bottom of the storage bin is provided with a discharging hole (31) butted with the material passing notch (21); the inner cavity of the storage bin (3) is divided into a plurality of unit cavities which are respectively communicated with the discharge hole (31) by at least one bin-dividing partition plate (32);

a horizontal mixer (4); the horizontal mixer (4) is fixed on one side wall of the mounting base (1) and is driven by a mixing driving component (7) to work;

a feed piston push plate (5); the feeding piston push plate (5) is connected in the movable gap in a sliding manner and is attached to the top surface of the mounting base (1); the surface of the feeding piston push plate (5) is provided with a material moving notch (51) with the same size as the material passing notch (21), and a material separating partition plate (52) arranged corresponding to the bin separating partition plate (32) is arranged in the material moving notch (51); the feeding piston push plate (5) is driven by a reciprocating pushing assembly (8) and can reciprocate between a feed inlet right below the material passing notch (21) and an upper feed inlet of the horizontal mixer (4);

a baffle assembly (6); the baffle plate assembly (6) comprises a baffle plate driving component (61), a feeding baffle plate (62) and a discharging baffle plate (63); the baffle driving component (61) is fixed on the side wall of the mounting base (1); the feeding baffle (62) is connected with the baffle driving component (61), is connected in the movable gap in a sliding manner, is positioned between the bottom surface of the discharging butt joint part (2) and the top surface of the feeding piston push plate (5), and is provided with a feeding notch (621) with the same size as the material passing notch (21) on the surface of the feeding baffle (62); discharge baffle (63) with baffle drive component (61) is connected, and sliding connection in the below discharge gate of horizontal blender (4), discharge gate notch (631) have been seted up on discharge baffle (63) surface.

2. The accurate feeding device of a multi-material horizontal gradient 3D printer according to claim 1, characterized in that the mounting base (1), the discharging butt joint part (2) and the storage bin (3) are connected by screw fastening.

3. The accurate feeding device of the multi-material horizontal gradient 3D printer according to claim 1, characterized in that a bin cover (33) is arranged on the top surface of the storage bin (3), and a feeding port (331) corresponding to the plurality of unit chambers is formed in the bin cover (33); the side wall of the storage bin (3) is provided with observation windows (34) which respectively correspond to the unit chambers.

4. The accurate feeding device of a multi-material horizontal gradient 3D printer according to claim 3, characterized in that the discharging port (31) is movably connected with a discharging port baffle plate (35); and a baffle adjusting knob (36) used for controlling the discharge port baffle (35) is arranged on the storage bin (3).

5. The multi-material horizontal gradient 3D printer precision feeding device as claimed in claim 1, characterized in that the reciprocating pushing assembly (8) comprises a first servo motor (81), a ball screw nut (82), a connecting plate (83), a screw (84) and a belt (85); the first servo motor (81) is fixed on one side wall of the mounting base (1) far away from the horizontal mixer (4); the ball screw nut (82) is rotationally connected to the mounting base (1) and is positioned below the first servo motor (81); the connecting plate (83) is connected with the feeding piston push plate (5); one end of the lead screw (84) is in threaded connection with the ball screw nut (82), and the other end of the lead screw is in rotary connection with the connecting plate (83); the belt (85) is sleeved between the end of the power output shaft of the first servo motor (81) and the ball screw nut (82).

6. The accurate feeding device for the multi-material horizontal gradient 3D printer according to claim 1, characterized in that shaft seats (41) are fixed at two ends of the horizontal mixer (4); a central shaft (42) is fixed between the central points of the two shaft seats (41); horizontal mixing shafts (43) are further fixed between the two shaft seats (41), and the number of the horizontal mixing shafts (43) is at least two.

7. The multi-material horizontal gradient 3D printer precision feeding device as claimed in claim 6, characterized in that the mixing driving assembly (7) comprises a second servo motor (71), a driving pulley (72), a driven pulley (73) and a transmission belt (74); the second servo motor (71) is fixed on the mounting base (1); the driving belt wheel (72) is fixedly sleeved at the end of a power output shaft of the second servo motor (71); the driven belt wheel (73) is fixedly sleeved on the end of one end of the central shaft (42) which penetrates out of the shaft seat (41); the transmission belt (74) is sleeved on the driving pulley (72) and the driven pulley (73).

8. The multi-material horizontal gradient 3D printer precision feeding device as claimed in claim 1, wherein the baffle driving member (61) comprises a bracket (611), a pushing cylinder (612) and a baffle push plate (613); the bracket (611) is fixed with the mounting base (1); the push cylinder (612) is fixed on the bracket (611); the baffle push plate (613) is fixed with the telescopic end of the push cylinder (612), and the feeding baffle (62) and the discharging baffle (63) are fixedly connected with the baffle push plate (613).

9. The multi-material horizontal gradient 3D printer precision feeding device as claimed in claim 8, wherein a limit screw (614) is connected to the support (611), and the limit screw (614) is located between the support (611) and the baffle push plate (613).

10. A multi-material horizontal gradient 3D printer precision feeder according to claim 8 or 9, characterized in that the discharge slot (631) coincides with the discharge of the horizontal mixer (4) when the feed slot (621) coincides with the feed through slot (21); when the feed baffle (62) blocks the feed notch (21), the discharge baffle (63) blocks the discharge hole of the horizontal mixer (4).

Technical Field

The invention relates to the technical field of additive manufacturing, in particular to a precise feeding device of a multi-material horizontal gradient 3D printer.

Background

In the development process of the existing industry, the research of material science is continuously advanced, when the performance of one material can not meet the requirement of actual use, different materials are combined into a new combination according to different proportions, the mechanical performance and the actual function of the new combination are perfectly embodied in use, the material is defined as a functional gradient material, and the design idea of the material that the performance of the material is changed along the length direction in a gradient manner according to the composition and the structure of the material is that the performance of the material is changed slowly through the change of the composition and the structure of the material. Once the idea is put forward, the gradient material 3D printer for printing the continuous material change is developed rapidly, how to accurately mix various different materials in proportion in the gradient material 3D printing process, and how to realize continuous structural change and uniform material distribution of the printed part is a key step of gradient 3D printing.

The feeding device capable of realizing gradient 3D printing on the market mainly has the following modes:

1. for example, the 3D printing device and the 3D printing forming method of a functional gradient material part of chinese patent CN106735214A, this way realizes the gradient change of the material, but does not realize the mixing device of the powder, does not have the continuous proportion change of the components, only the layer-by-layer change of the material in the vertical direction, has a certain imperfection in the analysis of the gradient change of the material, and cannot realize the slow change of the material components.

2. The layered powder spreading of the two materials is realized by adopting a combined method of a horizontal powder spreading device and spray head powder spraying, and the powder material is formed by utilizing a laser sintering mode. As described in the chinese patent CN106735214A, a 3D printing apparatus and a 3D printing forming method for functionally gradient material parts, after the material is formed, the material sample property of the formed part printed by this method is the same as that of the above-described technique, but the material changes layer by layer in the vertical direction, and does not have continuous material gradient change.

3. The 3D printer with the gradient powder supply system disclosed in the Chinese patent 109047765A adopts an upper powder supply and horizontal powder spreading mode, can realize gradient change in the horizontal direction, can realize continuous change of the composition proportion of printing materials in any proportion, pushes the powder with different components into a powder spreading trolley by a horizontal push plate during feeding, spreads the powder into a forming cylinder by the powder spreading trolley, is formed by laser sintering, this approach presents a horizontal gradient printing concept, but places too much emphasis on the manner in which the various materials are fed, it does not have an accurate powder feeding, mixing and discharging device, in the actual use process, the powder horizontally pushed into the powder spreading trolley by the push plate is difficult to ensure uniform mixing when being spread into the forming cylinder, so that the material components are not uniform, thereby causing the material property analysis to fail to reach an ideal state, and making the assumed horizontal continuous gradient difficult to realize.

4. Patent CN108480630A also discloses a device and method for preparing gradient material based on selective laser melting technology, which does not have an accurate powder supply device, and cannot ensure that various powders are slowly changed in proportion all the time, cannot be accurately mixed, and are uniformly spread in a forming cylinder, and it is also difficult to achieve that the proportion of material composition in the powder spreading direction on the horizontal plane is always constant, thus having adverse effects on the design and research of gradient material and the application of functional gradient material.

Therefore, developing a feeding device of a gradient material 3D printer with simple structure, precise gradient feeding and low cost is an urgent problem to be solved by those skilled in the art.

Disclosure of Invention

In view of this, the invention provides a precise feeding device for a multi-material horizontal gradient 3D printer, and aims to solve the technical problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an accurate feedway of many materials horizontal gradient 3D printer, includes:

mounting a base;

discharging the butt joint piece; the discharge butt joint piece is fixed on the top surface of the mounting base, and a movable gap is formed between the discharge butt joint piece and the top surface of the mounting base; the surface of the discharge butt joint piece is provided with a material through notch;

a storage bin; the storage bin is detachably connected to the top surface of the discharging butt joint piece, and the bottom of the storage bin is provided with a discharging hole in butt joint with the material passing groove; the interior of the storage bin is divided into a plurality of unit cavities respectively communicated with the discharge hole by at least one bin-dividing partition plate;

a horizontal mixer; the horizontal mixer is fixed on one side wall of the mounting base and is driven by the mixing driving assembly to work;

a feeding piston push plate; the feeding piston push plate is connected in the movable gap in a sliding mode and attached to the top surface of the mounting base; the surface of the feeding piston push plate is provided with a material moving notch with the same size as the material through notch, and a material distributing partition plate arranged corresponding to the bin distributing partition plate is arranged in the material moving notch; the feeding piston push plate is driven by a reciprocating pushing assembly and can reciprocate between the position right below the material passing notch and the position above the feeding hole of the horizontal mixer;

a baffle assembly; the baffle plate assembly comprises a baffle plate driving component, a feeding baffle plate and a discharging baffle plate; the baffle driving component is fixed on the side wall of the mounting base; the feeding baffle is connected with the baffle driving component, is connected in the movable gap in a sliding manner and is positioned between the bottom surface of the discharging butt joint part and the top surface of the feeding piston push plate, and the surface of the feeding baffle is provided with a feeding notch with the same size as the material through notch; the discharge baffle is connected with the baffle driving component and is connected with a discharge hole below the horizontal mixer in a sliding mode, and a discharge notch is formed in the surface of the discharge baffle.

Through the technical scheme, the feeding quantity of the material powder can be controlled by changing the size of the material moving notch on the feeding piston push plate, the accurate proportioning of various materials is controlled by opening and closing the feeding baffle plate, and the material powder is fully mixed through the horizontal mixer, so that the accuracy of feeding components and the stable, uniform and reliable proportioning of the materials are ensured.

Preferably, in the above accurate feedway of multi-material horizontal gradient 3D printer, the mounting base, the ejection of compact butt joint spare with the storage silo passes through screw fastening connection. The connection is convenient and stable, and the disassembly is convenient.

Preferably, in the accurate feeding device for the multi-material horizontal gradient 3D printer, a bin cover is arranged on the top surface of the storage bin, and a feeding port corresponding to the plurality of unit chambers is formed in the bin cover; the side wall of the storage bin is provided with observation windows which respectively correspond to the unit chambers. Is convenient for feeding and observation.

Preferably, in the accurate feeding device for the multi-material horizontal gradient 3D printer, the discharge port is movably connected with a discharge port baffle; and the storage bin is provided with a baffle adjusting knob for controlling the baffle of the discharge port. But manual control storage silo switch, after accomplishing to print, closes discharge gate baffle, and the surplus material powder in its each feed chamber can be taken out respectively, prevents extravagantly.

Preferably, in the above accurate feeding device for the multi-material horizontal gradient 3D printer, the reciprocating pushing assembly includes a first servo motor, a ball screw nut, a connecting plate, a screw and a belt; the first servo motor is fixed on one side wall of the mounting base, which is far away from the horizontal mixer; the ball screw nut is rotationally connected to the mounting base and is positioned below the first servo motor; the connecting plate is connected with the feeding piston push plate; one end of the lead screw is in threaded connection with the ball screw nut, and the other end of the lead screw is in rotary connection with the connecting plate; the belt is sleeved between the end of the power output shaft of the first servo motor and the ball screw nut. The reciprocating drive can be stably realized.

Preferably, in the accurate feeding device for the multi-material horizontal gradient 3D printer, shaft seats are fixed at two ends of the horizontal mixer; a central shaft is fixed between the central points of the two shaft seats; and a horizontal mixing shaft is fixed between the two shaft seats, and the number of the horizontal mixing shafts is at least two. Can realize the uniform mixing of the material powder.

Preferably, in the above accurate feeding device for the multi-material horizontal gradient 3D printer, the mixing driving assembly includes a second servo motor, a driving pulley, a driven pulley and a transmission belt; the second servo motor is fixed on the mounting base; the driving belt wheel is fixedly sleeved at the end of a power output shaft of the second servo motor; the driven belt wheel is fixedly sleeved on the end head of one end of the central shaft, which penetrates out of the shaft seat; the driving belt is sleeved on the driving belt wheel and the driven belt wheel. The stable rotation driving can be realized, and the rotation direction, the speed and the rotation number can be freely set through a program.

Preferably, in the above accurate feeding device for the multi-material horizontal gradient 3D printer, the baffle driving member includes a support, a pushing cylinder and a baffle push plate; the bracket is fixed with the mounting base; the pushing cylinder is fixed on the bracket; the baffle push pedal with the flexible end of push cylinder is fixed, the feed baffle with discharge baffle all with the baffle push pedal is fixed. The cylinder promotes stably, and control is convenient.

Preferably, in the above-mentioned accurate feedway of many material horizontal gradient 3D printer, be connected with stop screw on the support, stop screw is located the support with between the baffle push pedal. Used for adjusting the relative position of the feeding notch and the discharge hole of the storage bin.

Preferably, in the accurate feeding device for the multi-material horizontal gradient 3D printer, when the feeding notch coincides with the feed through notch, the discharge notch coincides with the discharge port of the horizontal mixer; and when the feeding baffle blocks the material passing notch, the discharging baffle blocks the discharging hole of the horizontal mixer. Synchronous driving can be realized.

According to the technical scheme, compared with the prior art, the invention discloses the accurate feeding device of the multi-material horizontal gradient 3D printer, and the accurate feeding device has the following beneficial effects:

1. the invention aims to provide a multi-material horizontal ladder 3D printer accurate feeding device which can ensure that multiple materials are accurately distributed according to pre-arranged materials and uniformly supplied to a 3D printer, ensures that the material arrangement of each layer of powder paving of the 3D printer is accurate, the material in the horizontal direction changes in a continuous gradient manner, and is stable and reliable in operation.

2. The invention can realize the powder supply of two or more materials, the powder supply amount is accurate and controllable, the multiple materials and the powder are uniformly mixed, the reliable guarantee is provided for the printed gradient material, the material and the powder can be supplemented at any time, the uninterrupted printing is realized, the unused various residual materials and the powder can be quickly separated and collected, and the cost of the printing material is saved.

3. The device simple structure, modular design can provide reliable horizontal gradient for horizontal gradient material printer and supply powder, has played very big effect to studying the functional gradient material field, and easy operation and low cost have vast market space simultaneously, have development potentiality extremely, bring an advanced feed mode for gradient material laser forming machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a precise feeding device of a multi-material horizontal gradient 3D printer according to the present invention;

FIG. 2 is a structural sectional view of a precise feeding device of a multi-material horizontal gradient 3D printer, provided by the invention;

FIG. 3 is a schematic structural view of a reciprocating push assembly according to the present invention;

FIG. 4 is a schematic diagram of the internal structure of a horizontal mixer according to the present invention;

FIG. 5 is a schematic structural view of a baffle plate driving member provided in the present invention;

FIG. 6 is a schematic structural view of a storage silo according to the present invention;

FIG. 7 is a schematic view of a first arrangement of the dividing walls of the storage silo according to the present invention;

FIG. 8 is a schematic view of a second arrangement of the sub-compartments of the storage silo according to the present invention;

FIG. 9 is a schematic view of a third arrangement of the bin dividing partitions of the storage bin according to the present invention;

FIG. 10 is a schematic view of a fourth arrangement of the bin dividing partitions of the storage bin according to the present invention;

FIG. 11 is a schematic view of a fifth arrangement of the sub-silo partition boards of the storage silo according to the invention;

FIG. 12 is a schematic view of a sixth arrangement of the bin dividing partition of the storage bin according to the present invention.

Wherein:

1-mounting a base;

2-discharging butt joint piece;

21-a through material notch;

3, a storage bin;

31-a discharge hole; 32-bin separation partition boards; 33-bin cover; 331-a feedwell; 34-a viewing window; 35-a discharge port baffle; 36-baffle adjustment knob;

4-a horizontal mixer;

41-axle bed; 42-central axis; 43-horizontal mixing shaft;

5-feeding piston push plate;

51-a material moving notch; 52-a material separating clapboard;

6-a baffle plate assembly;

61-a shutter drive member; 611-a bracket; 612-pushing cylinder; 613-baffle push plate; 614-limit screw; 62-a feed baffle; 621-a feed slot; 63-a discharge baffle; 631-discharge slot; 7-a compounding drive assembly;

71-a second servomotor; 72-a drive pulley; 73-a driven pulley; 74-a belt; 8-reciprocating pushing component;

81-a first servomotor; 82-ball screw nut; 83-connecting plate; 84-a lead screw; 85-a belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the accompanying drawings 1 to 6, the embodiment of the invention discloses a precise feeding device of a multi-material horizontal gradient 3D printer, which comprises:

a mounting base 1;

a discharge butt joint part 2; the discharge butt-joint piece 2 is fixed on the top surface of the mounting base 1, and a movable gap is formed between the discharge butt-joint piece and the top surface of the mounting base 1; the surface of the discharging butt joint piece 2 is provided with a material through notch 21;

a storage bin 3; the storage bin 3 is detachably connected to the top surface of the discharge butt joint piece 2, and the bottom of the storage bin is provided with a discharge hole 31 butted with the material passing notch 21; the storage bin 3 is internally divided into a plurality of unit chambers which are respectively communicated with the discharge hole 31 by at least one bin-dividing partition plate 32;

a horizontal mixer 4; the horizontal mixer 4 is fixed on one side wall of the mounting base 1 and is driven by the mixing driving component 7 to work;

a feed piston push plate 5; the feeding piston push plate 5 is connected in the movable gap in a sliding manner and is attached to the top surface of the mounting base 1; the surface of the feeding piston push plate 5 is provided with a material moving notch 51 with the same size as the material passing notch 21, and a material distributing partition plate 52 arranged corresponding to the bin distributing partition plate 32 is arranged in the material moving notch 51; the feeding piston push plate 5 is driven by a reciprocating pushing assembly 8 and can reciprocate between the position right below the material passing notch 21 and the position of the upper feeding hole of the horizontal mixer 4;

a baffle plate assembly 6; the shutter assembly 6 includes a shutter driving member 61, a feed shutter 62, and a discharge shutter 63; the baffle plate driving member 61 is fixed on the side wall of the mounting base 1; the feeding baffle plate 62 is connected with the baffle plate driving component 61, is connected in the movable gap in a sliding way, is positioned between the bottom surface of the discharging butt joint part 2 and the top surface of the feeding piston push plate 5, and the surface of the feeding baffle plate 62 is provided with a feeding notch 621 with the same size as the material passing notch 21; the discharging baffle 63 is connected with the baffle driving component 61 and is slidably connected with a discharging port below the horizontal mixer 4, and a discharging notch 631 is formed in the surface of the discharging baffle 63.

In order to further optimize the technical scheme, the mounting base 1, the discharging butt joint piece 2 and the storage bin 3 are fixedly connected through screws.

In order to further optimize the above technical solution, the top surface of the storage bin 3 is provided with a bin cover 33, and the bin cover 33 is provided with a feeding port 331 corresponding to the plurality of unit chambers; the side wall of the storage bin 3 has observation windows 34 corresponding to the plurality of unit chambers, respectively.

In order to further optimize the technical scheme, the discharge port 31 is movably connected with a discharge port baffle 35; the storage bin 3 is provided with a baffle adjusting knob 36 for controlling the discharge port baffle 35.

In order to further optimize the above technical solution, the reciprocating pushing assembly 8 comprises a first servo motor 81, a ball screw nut 82, a connecting plate 83, a screw 84 and a belt 85; the first servo motor 81 is fixed on one side wall of the mounting base 1 far away from the horizontal mixer 4; the ball screw nut 82 is rotatably connected to the mounting base 1 and is located below the first servo motor 81; the connecting plate 83 is connected with the feeding piston push plate 5; one end of the screw 84 is in threaded connection with the ball screw nut 82, and the other end is in rotational connection with the connecting plate 83; the belt 85 is sleeved between the end of the power output shaft of the first servo motor 81 and the ball screw nut 82.

In order to further optimize the technical scheme, shaft seats 41 are fixed at two ends of the horizontal mixer 4; a central shaft 42 is fixed between the central points of the two shaft seats 41; a horizontal mixing shaft 43 is fixed between the two shaft seats 41, and the number of the horizontal mixing shafts 43 is at least two.

In order to further optimize the above technical solution, the mixing driving assembly 7 comprises a second servo motor 71, a driving pulley 72, a driven pulley 73 and a transmission belt 74; the second servo motor 71 is fixed on the mounting base 1; the driving belt wheel 72 is fixedly sleeved at the end of the power output shaft of the second servo motor 71; the driven pulley 73 is fixedly sleeved on the end of one end of the central shaft 42 penetrating through the shaft seat 41; the transmission belt 74 is fitted over the driving pulley 72 and the driven pulley 73.

In order to further optimize the above technical solution, the baffle driving member 61 includes a bracket 611, a pushing cylinder 612 and a baffle pushing plate 613; the bracket 611 is fixed with the mounting base 1; the pushing cylinder 612 is fixed on the bracket 611; the baffle push plate 613 is fixed with the telescopic end of the push cylinder 612, and the feeding baffle 62 and the discharging baffle 63 are both fixedly connected with the baffle push plate 613.

In order to further optimize the above technical solution, a limit screw 614 is connected to the bracket 611, and the limit screw 614 is located between the bracket 611 and the baffle push plate 613.

In order to further optimize the above solution, when the feeding slot 621 coincides with the feeding slot 21, the discharging slot 631 coincides with the discharging port of the horizontal mixer 4; when the feed baffle 62 blocks the feed through slot 21, the discharge baffle 63 blocks the discharge opening of the horizontal mixer 4.

Referring to fig. 7 to 12, there are six different arrangements of the dividing partition 32.

Referring to fig. 2, in the initial position, the discharge port 31 is aligned with the supply notch 621 of the supply baffle 62 and the material-moving notch 51 of the supply piston push plate 5; when the powder falls into the material moving notch 51 on the feeding piston push plate 5, the feeding baffle plate 62 moves towards the right side, and the feeding notch 621 and the material passing notch 21 are staggered to seal the discharge port 31; the removal of feed piston push pedal 5 will move the material in the material notch 51 and push away the compounding cavity in horizontal blender 4, start horizontal mixing axle 43 and rotate, the misce bene powder, mix the back that finishes, ejection of compact baffle 63 removes and opens, and the material powder falls into the powder dolly is spread to the 3D printer, by spreading the powder dolly with the material powder tiling go into the shaping jar and carry out laser sintering.

When the feeding baffle 62 and the discharging baffle 63 are opened, the powder in the storage bin 3 falls into the material moving notch 51 on the feeding piston push plate 5, and meanwhile, the mixed powder in the horizontal mixer 4 falls into the powder spreading trolley; when feed baffle 62 and discharge baffle 63 were closed, feed piston push pedal 5 removed, will move the material in the material notch 51 and push away to horizontal blender 4, then, feed piston push pedal 5 gets back to the feed bin and connects the material level, and horizontal blender 4 starts simultaneously and carries out the compounding, mixes the completion back, and feed baffle 62 and discharge baffle 63 open, carry out the repeated feed next time, the compounding action.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.