CN110884118A

CN110884118A - 3D prints feed shop powder device

Info

Publication number: CN110884118A
Application number: CN201911340972.4A
Authority: CN
Inventors: 吕晨; 黄仲佳; 周晓宏; 罗贤国; 张勇; 孙文明; 赵薇; 郑兰斌; 吴志华; 王心生; 杨军; 李思文; 宗泽; 周翔; 艾晓蕾
Original assignee: Anhui Spring Valley 3d Printing Intelligent Equipment Industry Technology Research Institute Co Ltd
Current assignee: Anhui Spring Valley 3d Printing Intelligent Equipment Industry Technology Research Institute Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-03-17

Abstract

The invention discloses a 3D printing feeding powder spreading device which comprises a printer body, wherein a powder spreading plate is installed at the front end of the printer body, a stepping motor is installed at the rear end of the printer body, the stepping motor is connected with a sliding block through a lead screw thread, the sliding block is clamped on the side edge of a lead screw box and in a sliding groove through a first clamping groove and a second clamping groove respectively, a powder spreading rod is welded on the sliding block through a second connecting plate, an electric cylinder is installed on the powder spreading rod, the output end of the electric cylinder is connected with a silica gel scraper, and two groups of limiting plates are welded at the rear end of the printer body through a first connecting plate; the powder spreading roller can prevent damage caused by collision when in motion, the spring and the rubber plate can realize the buffer effect, the electric cylinder can adjust the lifting of the silica gel scraper and is suitable for spreading powder with different thicknesses, and the sliding block is provided with a plurality of groups of clamping grooves which are clamped with the lead screw box and the sliding groove, so that the twisting force of the powder spreading roller on the stepping motor is reduced.

Description

3D prints feed shop powder device

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing feeding and powder laying device.

Background

The 3D printing technology is present in the mid-90 s of the 20 th century and is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination. The printing machine is basically the same as a common printing working principle, the printing machine is internally provided with liquid or powder and other printing materials, the printing materials are overlapped layer by layer under the control of a computer after being connected with the computer, finally, a blueprint on the computer is changed into a real object, the 3D printing machine is internally provided with different printing materials such as metal, ceramic, plastic, sand and the like, the printing materials also have different forms, a plurality of printing materials are manufactured into filiform consumables for use, a plurality of printing materials are manufactured into powder for printing, and a powder paving device is required to pave the powder when the powder is printed.

However, in the prior art, the power equipment for laying printing powder generally implements the back-and-forth movement of the powder laying roller driven by the motor to lay the powder, when the powder laying roller driven by the motor runs, the powder laying roller is likely to cause the collision between the sliding block and the screw rod box due to the low precision of the motor, and the sliding block and the screw rod box are easily damaged during the collision, and the powder laying roller in the prior art cannot be lifted during the running, so that the powder laying roller cannot be lifted and lowered according to the actual printing requirement, a certain trouble is caused to the powder laying process, different powder laying can be implemented only by adjusting the height of the powder laying plate, and when the powder laying roller moves, the powder laying roller may generate a certain twisting force due to the movement, so that the stepping motor runs to cause a huge burden, so that the stepping motor is easy to be damaged when in operation.

For this reason, we provide a 3D and print feed and spread powder device and solve the problem that exists among the prior art, make it spread the powder rod and cause the damage when can prevent to collide in the motion, and spring and rubber slab can realize cushioning effect, and the electricity jar can carry out lift adjustment to the silica gel scraper blade, be applicable to the shop powder of different thickness, and be equipped with the multiunit draw-in groove on the slider, with lead screw box and sliding tray block, reduce the distortion power of spreading the powder rod and leading to the fact step motor.

Disclosure of Invention

The invention aims to provide a 3D printing feeding powder spreading device, and aims to solve the problems that impact caused by collision cannot be relieved and overlarge twisting force cannot be generated when a silica gel scraper and a stepping motor are lifted and adjusted in the prior art.

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

A3D printing feeding powder spreading device comprises a printer body, wherein a powder spreading plate is fixedly installed at the front end of the printer body, a powder supply cylinder is fixedly installed at the right side of the powder spreading plate, a powder overflowing cylinder is fixedly installed at the left side of the powder spreading plate, a stepping motor is fixedly installed at the rear end of the printer body, a lead screw is fixedly connected to the output end of the stepping motor, a lead screw box is fixedly installed at one end of the stepping motor, the lead screw is movably located in the lead screw box, a bearing is fixedly installed at one end of the lead screw box, one end of the lead screw is fixedly connected to the inside of the bearing, a sliding block is in threaded connection with the lead screw, a first clamping groove and a second clamping groove are fixedly formed in the bottom of the sliding block, the first clamping groove is movably clamped on the side edge of the lead screw box, a sliding groove is fixedly formed in the printer body, the welding of the one end of slider has the second connecting plate, the welding of top one side of second connecting plate has the shop powder rod, shop powder rod goes up fixed mounting has the electric jar, the output swing joint of electric jar has flexible loop bar and telescopic link, the top fixedly connected with fixed plate of telescopic link, the bottom fixed mounting of fixed plate has the silica gel scraper blade, the rear end fixedly connected with of printer body is two sets of first connecting plate, and is two sets of the limiting plate has all been welded to the bottom of first connecting plate, the fixed spring groove that has seted up in one side of limiting plate, the inside fixedly connected with spring in spring groove, the other end fixedly connected with rubber slab of spring, it is two sets of the limiting plate is at the both ends of lead screw box respectively, and the bottom laminating of limiting plate is at the.

Preferably, a stepping motor driver is fixedly mounted on one side of the stepping motor and electrically connected with the stepping motor.

Preferably, the telescopic loop bar is movably connected in the output end of the electric cylinder, and the telescopic link is movably connected in the telescopic loop bar.

Preferably, the telescopic loop bar and the telescopic bar penetrate through the powder spreading stick, and the telescopic bar is positioned at the bottom of the powder spreading stick.

Preferably, the fixed plate is at least fixedly connected with the silica gel scraper blades through four groups of fixing rivets, and the length of the silica gel scraper blades is the same as the width of the powder paving plate.

Preferably, the height from the powder laying plate of the second connecting plate is at least 10cm, and the distance from the silica gel scraper to the powder laying plate is at least 6 cm.

Preferably, the height of the powder supply cylinder is required to be parallel to that of the powder spreading plate, the height of the powder overflow cylinder is required to be 2-3cm lower than the plane height of the powder spreading plate, and the end part of the powder spreading plate is connected with the powder overflow cylinder in an inclined mode.

Preferably, the silica gel scraper blades are respectively arranged at two ends of the powder laying plate at the farthest distance when the silica gel scraper blades move, and the length of each wire rod is 4-6cm longer than that of the powder laying plate.

The invention has the technical effects and advantages that: compared with the prior art, the 3D printing feeding and powder laying device provided by the invention has the following advantages:

1. the stepping motor and the screw rod are adopted to drive the powder spreading roller to move, so that the powder spreading roller can spread printing powder, the screw rod box is provided with the limiting plate, the limiting plate is connected with the rubber plate through the spring, the limiting of the sliding block is realized, the sliding block is prevented from colliding with the screw rod box during moving, the rubber plate and the spring can prevent the sliding block and the screw rod from being damaged during collision, and the buffering effect is achieved;

2. according to the invention, the height of the silica gel scraper blade is adjusted through the electric cylinder, so that the height of the silica gel plate can be adjusted according to actual requirements when powder is laid, the thickness of the powder can meet the actual printing requirements, and the silica gel scraper blade can be lifted when the powder laying roller returns, so that the laid powder is prevented from being scraped again, and the powder flows back to the powder supply cylinder to block the powder supply cylinder;

3. according to the invention, the first clamping groove and the second clamping groove are arranged on the sliding block, so that the sliding block can be stably clamped in the screw rod box and the sliding groove, the sliding of the sliding block can be more stable, and the phenomenon that the advancing twisting force of the stepping motor is too large due to the weight of the powder spreading roller and huge burden is caused on the stepping motor can be prevented.

Drawings

FIG. 1 is a side schematic view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of part A of the present invention;

FIG. 4 is a schematic view of part B of the present invention.

In the figure: 1. a printer body; 2. spreading a powder plate; 3. a powder supply cylinder; 4. a powder overflow cylinder; 5. a stepping motor; 6. a stepper motor driver; 7. a lead screw box; 8. a screw rod; 9. a slider; 10. a first connecting plate; 11. a bearing; 12. a limiting plate; 13. spreading a powder roller; 14. a first card slot; 15. a second card slot; 16. a sliding groove; 17. a second connecting plate; 18. an electric cylinder; 19. a telescopic loop bar; 20. a telescopic rod; 21. a fixing plate; 22. a silica gel scraper plate; 23. a spring slot; 24. a spring; 25. a rubber plate.

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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.

The invention provides a 3D printing feeding and powder spreading device as shown in figures 1-4, which comprises a printer body 1;

according to fig. 2, in order to realize powder spreading, sintering and printing of a finished product, a powder spreading plate 2 is fixedly installed at the front end of a printer body 1, in order to realize powder supply, a powder supply cylinder 3 is fixedly installed at the right side of the powder spreading plate 2, in order to realize collection of powder scraped by a powder spreading rod 13, a powder overflowing cylinder 4 is fixedly installed at the left side of the powder spreading plate 2, in order to realize supply and collection of powder, the height of the powder supply cylinder 3 is required to be parallel to the height of the powder spreading plate 2, the height of the powder overflowing cylinder 4 is required to be 2-3cm lower than the plane height of the powder spreading plate 2, and the end part of the powder spreading plate 2 is obliquely connected with the powder overflowing cylinder 4;

according to fig. 1, 2 and 3, in order to realize power output to the slider 9, a stepping motor 5 is fixedly installed at the rear end of the printer body 1, in order to realize operation control of the stepping motor 5, a stepping motor driver 6 is fixedly installed at one side of the stepping motor 5, the stepping motor driver 6 is electrically connected with the stepping motor 5, an output end of the stepping motor 5 is fixedly connected with a lead screw 8, one end of the stepping motor 5 is fixedly installed with a lead screw box 7, the lead screw 8 is movably located in the lead screw box 7, in order to enable the lead screw 8 to be fixedly connected and rotate, a bearing 11 is fixedly installed at one end of the lead screw box 7, the inside of the bearing 11 is fixedly connected with one end of the lead screw 8, the lead screw 8 is in threaded connection with the slider 9, in order to reduce gravity when the slider 9 slides, and further enable the twisting force of the stepping motor 5 to, a first clamping groove 14 and a second clamping groove 15 are fixedly formed in the bottom of the sliding block 9, the first clamping groove 14 is movably clamped on the side edge of the lead screw box 7, a sliding groove 16 is fixedly formed in the printer body 1, and the second clamping groove 15 is movably clamped in the sliding groove 16;

according to fig. 1, in order to realize powder spreading, a second connecting plate 17 is welded at one end of a sliding block 9, a powder spreading rod 13 is welded at one side of the top of the second connecting plate 17, in order to enable a silica gel scraper 22 to realize lifting adjustment, an electric cylinder 18 is fixedly installed on the powder spreading rod 13, an output end of the electric cylinder 18 is movably connected with a telescopic loop bar 19 and a telescopic rod 20, the telescopic loop bar 19 is movably connected in an output end of the electric cylinder 18, the telescopic rod 20 is movably connected in the telescopic loop bar 19, the telescopic loop bar 19 and the telescopic rod 20 penetrate through the powder spreading rod 13, the telescopic rod 20 is positioned at the bottom of the powder spreading rod 13, a fixing plate 21 is fixedly connected at the top end of the telescopic rod 20, the silica gel scraper 22 is fixedly installed at the bottom of the fixing plate 21, the silica gel scraper 22 is fixedly connected on the fixing plate 21 through at least four groups of fixing rivets, in order to enable the silica gel scraper 22, in order to realize the lifting adjustment of the silica gel scraper 22 and the powder laying with different thicknesses, the height of the second connecting plate 17 from the powder laying plate 2 is at least 10cm, the distance of the silica gel scraper 22 from the powder laying plate 2 is at least 6cm, in order to realize the complete powder laying of the powder laying plate 2, the farthest distances of the silica gel scraper 22 are respectively positioned at two ends of the powder laying plate 2 during the movement, and the length of the screw rod 8 is 4-6cm longer than that of the powder laying plate 2;

according to fig. 1, fig. 2 and fig. 4, carry out spacing collision prevention to slider 9 in order to realize, two sets of first connecting plate 10 of rear end fixedly connected with at printer body 1, limiting plate 12 has all been welded to the bottom of two sets of first connecting plate 10, collide to buffer slider 9 in order to realize, spring groove 23 has been fixed to have seted up in one side of limiting plate 12, the inside fixedly connected with spring 24 of spring groove 23, spring 24's other end fixedly connected with rubber slab 25, it is spacing to slider 9 in order to realize, make two sets of limiting plates 12 be in the both ends of lead screw box 7 respectively, and the laminating of the bottom of limiting plate 12 is at the upper surface of lead screw box 7.

The working principle is as follows: firstly, realize the supply to the powder through supplying powder jar 3, then start step motor 5, make step motor 5 realize reciprocating motion under step motor driver 6's control, and step motor 5 drives the slider through lead screw 8 and removes, and then realize driving and spread powder rod 13 and remove, and spread powder rod 13 when removing, can be through the raising and lowering functions of electric jar 18, realize adjusting the height of silica gel scraper blade 22, make silica gel scraper blade 22 can adjust according to the demand of reality, then silica gel scraper blade 22 will push the powder to spill powder jar 4 and retrieve, then in the return stroke, electric jar 18 packs up silica gel scraper blade 22, prevent that silica gel scraper blade 22 from scraping the powder back to supplying in powder jar 3, cause the jam that supplies powder jar 3, then 3D printer sinters, spread the powder again, until printing is accomplished, and when spreading powder rod 13 operation, slider 9 blocks at lead screw box through first draw-in groove 14 and second draw-in groove 15 respectively The side edge of the powder spreading roller 7 and the sliding groove 16 of the printer body 1 can reduce the influence of the twisting force generated by the powder spreading roller 13 during the movement on the stepping motor 5.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a 3D prints feed shop powder device, includes printer body (1), its characterized in that: the powder distributing device is characterized in that a powder distributing plate (2) is fixedly mounted at the front end of the printer body (1), a powder supplying cylinder (3) is fixedly mounted at the right side of the powder distributing plate (2), a powder overflowing cylinder (4) is fixedly mounted at the left side of the powder distributing plate (2), a stepping motor (5) is fixedly mounted at the rear end of the printer body (1), a lead screw (8) is fixedly connected to the output end of the stepping motor (5), a lead screw box (7) is fixedly mounted at one end of the stepping motor (5), the lead screw (8) is movably located in the lead screw box (7), a bearing (11) is fixedly mounted at one end of the lead screw box (7), one end of the lead screw (8) is fixedly connected to the inside of the bearing (11), a sliding block (9) is connected to the lead screw (8) in a threaded manner, and a first clamping groove (14) and a second clamping groove (15, the utility model discloses a printer, including printer body (1), first draw-in groove (14) activity block is on the side of lead screw box (7), fixed sliding tray (16) have been seted up on printer body (1), second draw-in groove (15) activity block is in sliding tray (16), the one end welding of slider (9) has second connecting plate (17), the welding of top one side of second connecting plate (17) has spread powder rod (13), it has electric jar (18) to spread powder rod (13) go up fixed mounting, the output swing joint of electric jar (18) has flexible loop bar (19) and telescopic link (20), the top fixedly connected with fixed plate (21) of telescopic link (20), the bottom fixed mounting of fixed plate (21) has silica gel scraper blade (22), the rear end fixedly connected with two sets of first connecting plate (10) of printer body (1), two sets of limiting plate (12) have all been welded to the bottom of first connecting plate, spring groove (23) have been fixed to one side of limiting plate (12), the inside fixedly connected with spring (24) of spring groove (23), the other end fixedly connected with rubber slab (25) of spring (24), two sets of limiting plate (12) are in the both ends of lead screw box (7) respectively, and the upper surface at lead screw box (7) is laminated to the bottom of limiting plate (12).

2. The 3D printing feed dusting device of claim 1, characterized in that: one side fixed mounting of step motor (5) has step motor driver (6), step motor driver (6) and step motor (5) electric connection.

3. The 3D printing feed dusting device of claim 1, characterized in that: the telescopic sleeve rod (19) is movably connected into the output end of the electric cylinder (18), and the telescopic rod (20) is movably connected into the telescopic sleeve rod (19).

4. The 3D printing feed dusting device of claim 1, characterized in that: the telescopic loop bar (19) and the telescopic bar (20) penetrate through the powder spreading stick (13), and the telescopic bar (20) is positioned at the bottom of the powder spreading stick (13).

5. The 3D printing feed dusting device of claim 1, characterized in that: fixed plate (21) are gone up at least through four groups of fixing rivet fixed connection silica gel scraper blade (22), the length of silica gel scraper blade (22) is the same with the width of spreading powder board (2).

6. The 3D printing feed dusting device of claim 1, characterized in that: the distance between the second connecting plate (17) and the powder paving plate (2) is at least 10cm, and the distance between the silica gel scraper (22) and the powder paving plate (2) is at least 6 cm.

7. The 3D printing feed dusting device of claim 1, characterized in that: the height of the powder supply cylinder (3) is required to be kept parallel to that of the powder paving plate (2), the height of the powder overflowing cylinder (4) is required to be 2-3cm lower than the plane height of the powder paving plate (2), and the end part of the powder paving plate (2) is obliquely connected with the powder overflowing cylinder (4).

8. The 3D printing feed dusting device of claim 1, characterized in that: the silica gel scraper blades (22) are respectively arranged at two ends of the powder paving plate (2) at the farthest distance in the movement process, and the length of the screw rod (8) is 4-6cm longer than that of the powder paving plate (2).