阅读说明：本技术 一种slm粉末压实及铺粉装置 (SLM powder compaction and powder paving device ) 是由 朱协彬 周建强 陈志浩 李建生 鹿宪柯 孙正君 孙祖亮 于 2020-12-09 设计创作，主要内容包括：本发明公开了一种SLM粉末压实及铺粉装置,属于增材制造领域,包括工作台,所述工作台的顶部通过支架固定连接有驱动盒和从动盒,所述驱动盒内壁的两侧之间转动连接有驱动丝杆,所述驱动丝杆的左端贯穿驱动盒并延伸至驱动盒的外部,所述驱动丝杆上螺纹连接有丝杆滑块,所述从动盒内壁的两侧之间固定连接有滑杆,所述滑杆上滑动连接有滑块,所述丝杆滑块和滑块相对的一侧之间固定连接有连接杆,所述驱动盒的背面和从动盒的正面均开设有移动槽。本发明通过驱动板的底部的两侧分别安装有碾压筒和分散筒,可以将粉末进行翻动,从而将粉末内部的气泡空腔打散,使粉末的压制效果得到进一步的提升,通过导流板和收集盒可以将粉材收集起来减少浪费。(The invention discloses an SLM powder compacting and spreading device, which belongs to the field of additive manufacturing and comprises a workbench, wherein the top of the workbench is fixedly connected with a driving box and a driven box through a support, a driving lead screw is rotatably connected between two sides of the inner wall of the driving box, the left end of the driving lead screw penetrates through the driving box and extends to the outside of the driving box, a lead screw sliding block is in threaded connection with the driving lead screw, a sliding rod is fixedly connected between two sides of the inner wall of the driven box, a sliding block is in sliding connection with the sliding rod, a connecting rod is fixedly connected between the lead screw sliding block and one side, opposite to the sliding block, of the lead screw sliding block, and moving grooves are formed in the back of the driving box and the front of the driven box. According to the invention, the grinding cylinder and the dispersing cylinder are respectively arranged on two sides of the bottom of the driving plate, so that the powder can be turned over, the bubble cavities in the powder are scattered, the pressing effect of the powder is further improved, and the powder can be collected by the guide plate and the collecting box, so that the waste is reduced.)

1. An SLM powder compaction and powder paving device, includes workstation (1), its characterized in that: the top of workstation (1) is through support fixedly connected with drive box (2) and driven box (3), it is connected with drive lead screw (4) to rotate between the both sides of drive box (2) inner wall, the left end of drive lead screw (4) runs through drive box (2) and extends to the outside of drive box (2), threaded connection has lead screw slider (5) on drive lead screw (4), fixedly connected with slide bar (6) between the both sides of driven box (3) inner wall, sliding connection has slider (7) on slide bar (6), fixedly connected with connecting rod (8) between one side that lead screw slider (5) and slider (7) are relative, shifting chute (9) have all been seted up in the back of drive box (2) and the front of driven box (3), support fixedly connected with drive plate (10) are passed through to the bottom of connecting rod (8), the left side of drive plate (10) bottom is through mounting bracket fixedly connected with grinding section of thick bamboo (11), the right side of drive plate (10) bottom is through mounting bracket fixedly connected with dispersion section of thick bamboo (12), the top of workstation (1) is provided with presses powder box (13), the right side fixedly connected with stopper (14) at workstation (1) top, support fixedly connected with driving motor (15) are passed through in the left side of drive box (2), the output of driving motor (15) and the left end fixed connection of drive lead screw (4).

2. The SLM powder compacting and spreading device as claimed in claim 1, wherein a fixing groove (16) is formed in the left side of the top of the workbench (1), an adjusting screw rod (17) is rotatably connected between two sides of the inner wall of the fixing groove (16), the left end of the adjusting screw rod (17) penetrates through the workbench (1) and extends to the outside of the workbench (1), a hand wheel (18) is fixedly connected to the left end of the adjusting screw rod (17), a moving block (19) is connected to the adjusting screw rod (17) in a threaded manner, a clamping block (20) is fixedly connected to the top of the moving block (19), and the top end of the clamping block (20) penetrates through the workbench (1) and extends to the outside of the workbench (1).

3. SLM powder compacting and spreading device according to claim 2, characterized in that the left side of the top of the table (1) is provided with a chute adapted to the clamping block (20).

4. The SLM powder compacting and dusting device of claim 1, characterised in that the top of the stopper (14) is fixedly connected with a deflector (21) through a bracket, and the right side of the top of the working table (1) is provided with a collecting box (22).

5. SLM powder compacting and spreading device according to claim 1, characterized in, that a base (23) is fixedly connected to both sides of the bottom of the table (1).

6. SLM powder compaction and powdering device according to claim 1, characterised in that bumps are fixedly attached to the surface of the dispersion cylinder (12).

Technical Field

The invention relates to the field of additive manufacturing, in particular to an SLM powder compacting and powder spreading device.

Background

The additive manufacturing technology is different from the traditional material reduction and deformation forming technology; the three-dimensional solid part with any complex shape can be rapidly manufactured without a die; has been widely applied to the fields of aerospace, biomedicine and the like, and a Selective Laser Melting (SLM) technology is taken as one of additive manufacturing technologies; selectively heating and melting the single-layer powder by using laser beams as a heat source; the powder particles in the single layer and between the layers are bonded; finally, a three-dimensional entity with a complex shape can be quickly formed; the forming precision is high; the density can almost reach 100%; the performance exceeds that of the traditional casting. In the process of processing parts by SLM; the quality of the powder laying quality directly influences the forming precision and the density.

The powder device is all not carried out the operation of compaction to the powder to most present shop's powder device, and the powder that only pure adoption scraper spilled over on the surface is strickleed off, and does not collect the powder of excessive, has caused a large amount of wastes of powder, and most present when spreading the powder to the powder, do not solve the inside cavity of powder, lead to the powder can form in the pressing process and sink, lead to off-the-shelf quality good inadequately.

Disclosure of Invention

1. Technical problem to be solved

The technical problem to be solved by the invention is to provide an SLM powder compacting and spreading device, which can effectively collect redundant powder, and can remove air bubbles in a cavity inside the powder before compacting the powder, thereby improving the compacting effect.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a SLM powder compacting and spreading device comprises a workbench, wherein the top of the workbench is fixedly connected with a driving box and a driven box through a support, a driving lead screw is rotatably connected between two sides of the inner wall of the driving box, the left end of the driving lead screw penetrates through the driving box and extends to the outside of the driving box, a lead screw slider is in threaded connection with the driving lead screw, a sliding rod is fixedly connected between two sides of the inner wall of the driven box, a sliding block is in sliding connection with the sliding rod, a connecting rod is fixedly connected between one side of the lead screw slider opposite to the sliding block, moving grooves are formed in the back of the driving box and the front of the driven box, a driving plate is fixedly connected with the bottom of the connecting rod through the support, a grinding cylinder is fixedly connected with the left side of the bottom of the driving plate through the mounting frame, a dispersing cylinder is fixedly connected with the right side of the bottom of the driving plate through the mounting frame, the top of workstation is provided with the pressure powder box, the right side fixedly connected with stopper at workstation top, support fixedly connected with driving motor is passed through in the left side of drive box, driving motor's output and the left end fixed connection of drive lead screw.

The left side at workstation top has seted up the fixed slot, it is connected with accommodate the lead screw to rotate between the both sides of fixed slot inner wall, accommodate the lead screw's left end runs through the workstation and extends to the outside of workstation, accommodate the lead screw's left end fixedly connected with hand wheel, threaded connection has the movable block on the accommodate the lead screw, the top fixedly connected with clamp splice of movable block, the top of clamp splice runs through the workstation and extends to the outside of workstation.

And a sliding groove matched with the clamping block is formed in the left side of the top of the workbench.

The top of stopper is through support fixedly connected with guide plate, the right side at workstation top is provided with collects the box.

The base is fixedly connected to the two sides of the bottom of the workbench.

The surface of the dispersing cylinder is fixedly connected with a lug.

3. Advantageous effects

(1) According to the invention, the bottom of the connecting rod is fixedly connected with the driving plate through the bracket, the left side of the bottom of the driving plate is fixedly connected with the grinding cylinder through the mounting frame, the right side of the bottom of the driving plate is fixedly connected with the dispersing cylinder through the mounting frame, the surface of the dispersing cylinder is fixedly connected with the bump, and the bump can turn over powder when the dispersing cylinder rotates, so that the bubble cavity in the powder is scattered, and the pressing effect of the powder is further improved.

(2) According to the invention, the left side of the top of the workbench is provided with the fixed groove, the two sides of the inner wall of the fixed groove are rotatably connected with the adjusting screw rod, the left end of the adjusting screw rod penetrates through the workbench and extends to the outside of the workbench, the left end of the adjusting screw rod is fixedly connected with the hand wheel, the adjusting screw rod is in threaded connection with the moving block, the top of the moving block is fixedly connected with the clamping block, the top end of the clamping block penetrates through the workbench and extends to the outside of the workbench, when powder pressing boxes with different sizes are replaced, the powder pressing boxes are fixed by adjusting the position of the clamping block, the adjusting screw rod can be driven to rotate by rotating the hand wheel, so that the moving block is driven to rotate, the clamping block is further driven to move, and the powder pressing boxes are clamped and fixed, so that powder pressing boxes with different models can be used, and the use range of equipment is expanded.

(3) According to the invention, the top of the limiting block is fixedly connected with the guide plate through the bracket, the right side of the top of the workbench is provided with the collecting box, and redundant powder enters the collecting box from the right side of the powder pressing box along the guide plate along with the propelling of the grinding cylinder, so that the waste of powder materials is reduced, and the cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of an SLM powder compaction and powder spreading apparatus provided by the present invention;

FIG. 2 is a top view of the internal structure of the drive cassette shown in FIG. 1;

fig. 3 is a structural left side view of the driving plate shown in fig. 1.

Reference numerals: 1. a work table; 2. a drive cartridge; 3. a driven box; 4. driving the screw rod; 5. a screw rod slide block; 6. a slide bar; 7. a slider; 8. a connecting rod; 9. a moving groove; 10. a drive plate; 11. rolling the cylinder; 12. a dispersing cylinder; 13. pressing the powder box; 14. a limiting block; 15. a drive motor; 16. fixing grooves; 17. adjusting the screw rod; 18. a hand wheel; 19. a moving block; 20. a clamping block; 21. a baffle; 22. a collection box; 23. a base.

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 fig. 1-3, an embodiment of the present invention is shown: a SLM powder compacting and spreading device comprises a workbench 1, wherein the top of the workbench 1 is fixedly connected with a driving box 2 and a driven box 3 through a support, a driving lead screw 4 is rotatably connected between two sides of the inner wall of the driving box 2, the left end of the driving lead screw 4 penetrates through the driving box 2 and extends to the outside of the driving box 2, a lead screw slider 5 is in threaded connection with the driving lead screw 4, a slide rod 6 is fixedly connected between two sides of the inner wall of the driven box 3, a slider 7 is in sliding connection with the slide rod 6, a connecting rod 8 is fixedly connected between one side of the lead screw slider 5 opposite to the slider 7, moving grooves 9 are respectively formed in the back of the driving box 2 and the front of the driven box 3, a driving plate 10 is fixedly connected to the bottom of the connecting rod 8 through a support, and a grinding cylinder 11 is fixedly connected to the left side of the bottom of the driving plate 10 through a mounting rack, the right side of drive plate 10 bottom is through mounting bracket fixedly connected with dispersion drum 12, the top of workstation 1 is provided with presses powder box 13, the right side fixedly connected with stopper 14 at workstation 1 top, support fixedly connected with driving motor 15 is passed through in the left side of drive box 2, driving motor 15's output and the left end fixed connection of drive lead screw 4, driving motor 15 is connected with external power source, and driving motor 15 drives drive lead screw 4 and rotates to drive 5 back-and-forth movements of lead screw slider, further drive connecting rod 8 removes, and connecting rod 8 drives drive plate 10 and removes, thereby drives and rolls a section of thick bamboo 11 and dispersion drum 12 and removes, rolls the powder material in pressing powder box 13.

The left side of the top of the workbench 1 is provided with a fixing groove 16, an adjusting screw rod 17 is rotatably connected between two sides of the inner wall of the fixing groove 16, the left end of the adjusting screw rod 17 penetrates through the workbench 1 and extends to the outside of the workbench 1, a hand wheel 18 is fixedly connected to the left end of the adjusting screw rod 17, a moving block 19 is in threaded connection with the adjusting screw rod 17, a clamping block 20 is fixedly connected to the top of the moving block 19, the top end of the clamping block 20 penetrates through the workbench 1 and extends to the outside of the workbench 1, when powder pressing boxes 13 of different sizes are replaced, the powder pressing boxes 13 are fixed by adjusting the position of the clamping block 20, and the hand wheel 18 is rotated to drive the adjusting screw rod 17 to rotate so as to drive the moving block 19 to rotate, further drive the clamping block 20 to move and clamp and fix the powder pressing boxes 13.

The left side of the top of the workbench 1 is provided with a sliding groove matched with the clamping block 20, and the clamping block 20 moves in the sliding groove.

Support fixedly connected with guide plate 21 is passed through at the top of stopper 14, the right side at 1 top of workstation is provided with collects box 22, and unnecessary powder is along with the propulsion of grinding a section of thick bamboo 11, and the right side from pressing powder box 13 has reduced the waste of powder material along guide plate 21 entering into and collects box 22 at last, the cost is reduced.

The base 23 is fixedly connected to the two sides of the bottom of the workbench 1, the shock absorption pad is arranged at the bottom of the base 23, vibration of the device in the using process can be reduced, and therefore noise is reduced.

The surface of the dispersing cylinder 12 is fixedly connected with a bump, and the bump can turn over the powder when the dispersing cylinder 12 rotates, so that the bubble cavity inside the powder is broken up, and the pressing effect of the powder is further improved.

The working principle is as follows: when the powder pressing box is used, firstly, powder is poured into the powder pressing box 13, then the equipment is started, the driving motor 15 drives the driving screw rod 4 to rotate, so that the screw rod sliding block 5 is driven to move back and forth, the connecting rod 8 is further driven to move, the connecting rod 8 drives the driving plate 10 to move, so that the grinding cylinder 11 and the dispersing cylinder 12 are driven to move, the powder in the powder pressing box 13 is ground, before the grinding cylinder 11 presses the powder, the powder can be turned over by the convex blocks on the surface of the dispersing cylinder 12 when the dispersing cylinder 12 rotates, so that the bubble cavities in the powder are scattered, the pressing effect of the powder is further improved, the redundant powder enters the collecting box 22 along the guide plate 21 from the right side of the powder pressing box 13 along with the propulsion of the grinding cylinder 11, the waste of the powder is reduced, the cost is reduced, when the powder pressing boxes 13 with different sizes are replaced, the powder pressing box 13 is fixed by adjusting the position of the clamping block 20, the adjusting screw rod 17 can be driven to rotate by rotating the hand wheel 18, so that the moving block 19 is driven to rotate, the clamping block 20 is further driven to move, and the powder pressing box 13 is clamped and fixed.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.