CN214494940U - Powder paving device for additive manufacturing - Google Patents
Powder paving device for additive manufacturing Download PDFInfo
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- CN214494940U CN214494940U CN202023185680.9U CN202023185680U CN214494940U CN 214494940 U CN214494940 U CN 214494940U CN 202023185680 U CN202023185680 U CN 202023185680U CN 214494940 U CN214494940 U CN 214494940U
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Abstract
The invention discloses a powder spreading device for additive manufacturing, which comprises a reciprocating mechanism, a powder feeding funnel and a scraper blade, wherein the reciprocating mechanism drives the powder feeding funnel to reciprocate above a forming substrate in a forming bin, a powder outlet with a long and narrow structure is formed in the bottom of the powder feeding funnel, a powder spreading mechanism is arranged at the powder outlet, the powder spreading mechanism comprises a metering gear and a driving assembly, the metering gear is arranged along the length direction of the powder outlet, the lower part of the metering gear protrudes to the outer part of the powder feeding funnel, the driving assembly drives the metering gear to spread powder in the powder feeding funnel onto the forming substrate, and the scraper blade is used for leveling the spread powder. Powder is followed the rotation of measurement gear in the powder paving process, and progressively lower powder is paved, and the mobility of powder is better, more is favorable to spreading the powder fast when promoting shop's powder homogeneity, promotes shop's powder efficiency.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to a powder laying device on additive manufacturing forming equipment.
Background
With the development of the additive manufacturing industry, increasingly strict requirements on the forming speed and size are provided, and additive manufacturing equipment is continuously optimized and upgraded according to the requirements of customers, wherein a powder paving device is an important part in selective melting forming equipment, at present, an upper powder feeding type powder cabin and a lower powder feeding type powder cabin are more applied, the upper powder feeding type powder cabin is generally positioned above a scraper, the outflow quantity of powder in each pass is controlled through a quantitative powder feeding mechanism, a certain amount of powder is firstly accumulated at an initial position, then the scraper sweeps back and forth, the thickness of a forming layer is controlled by adjusting the distance between the scraper and a substrate surface, but the powder is easily changed in flowability due to the influence of environmental humidity and temperature, so that the spreadability of the powder is poor, powder blocking or agglomeration is generated, and the performance stability of a forming part is influenced. The powder cabin of lower powder feeding formula is generally located the below of scraper, and powder cabin and shaping cabin are located the coplanar, and the powder in the powder cabin is released through the stepper piston, is collected the powder on powder cabin plane by the scraper again to evenly tile at the shaping layer, and this mode can more accurate control each pass powder output, and requires relatively lower to powder mobility, nevertheless because powder cabin and shaping cabin are in the coplanar, the residue that splashes in the shaping process and scraper return belt all will cause the pollution to the powder raw materials. The powder spreading mode of the existing additive manufacturing equipment can ensure that the thickness of each layer of powder is uniform and flat, but the requirements on the flowability and the particle size distribution of the powder are high, the powder spreading stability cannot be continuously maintained, the powder conveying amount is difficult to control, and waste is caused.
The Chinese utility model patent with application number 201920445863.8 discloses a selective laser sintering powder laying device, which adopts a mode of combining a movable hopper with a scraper and a powder laying roller to lay powder, but the powder feeding mode of vibrating and breaking an arch by the movable hopper cannot quantize and homogenize the powder feeding amount; the utility model discloses a chinese utility model patent with application number 201520953986.4, which discloses a powder-based additive manufacturing equipment with bidirectional powder spreading, realizing bidirectional powder spreading and improving efficiency, but discovering through application that the uniformity of the powder spreading is not enough, the main reason is that the powders spread at present have different particle diameters, the particle diameters of the powders are all in a range, namely, the particle diameters of the powders are not uniform, if a powder compacting roller is adopted, the smaller particle diameter can flow to two sides in the process of compacting loose powders, the larger particle diameter can be concentrated and compacted in the middle part, further the particle diameter distribution of the powder spreading is not uniform, moreover, the powder metered by the quantitative powder feeding gear with the structure can be discharged through the powder outlet at the lower part, the powder discharging is easy to be stacked and is not beneficial to the powder flowing in the process of powder spreading, and when the powder is spread by the two powder spreading modes, the powder is easy to adhere to the surface of the roller in the process of powder compacting, the smoothness of powder laying is influenced, and further the forming quality is influenced. Therefore, a new powder spreading device is needed to solve the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a powder laying device for additive manufacturing. The method solves the problems of powder blocking, uneven spreading, agglomeration and the like caused by the fact that the forming process of the additive manufacturing selection area is easily influenced by the particle size distribution, the flowability, the working environment and the like of raw material powder, effectively improves the forming efficiency and the stability of a formed part, and reduces the cost.
The utility model provides a powder paving device of vibration material disk, includes reciprocating motion mechanism, send powder funnel and scraper blade, reciprocating motion mechanism drive send the powder funnel to be located the shaping base plate top reciprocating motion in the storehouse that takes shape, the bottom of sending the powder funnel is equipped with the play powder mouth of long and narrow structure, it is equipped with the powder paving mechanism to go out powder mouth department, it includes metering gear and drive assembly to spread powder mechanism, metering gear sets up along a powder mouth length direction, metering gear's lower part protrusion is to the outside of sending the powder funnel, drive assembly drive metering gear will send the powder in the powder funnel to spread to take shape on the base plate, the powder that the scraper blade is used for spreading carries out the flattening.
Further, still include powder mechanism, powder mechanism and powder feeding funnel intercommunication, powder mechanism is used for adding the powder to in the powder feeding funnel.
Specifically, add powder mechanism including locating the powder cabin that stores up in the storehouse of taking shape, store up and be equipped with down powder mechanism on the powder cabin, send powder funnel to store up when powder cabin below through the mechanism that moves repeatedly, through lower powder mechanism reprint store up powder under-deck powder extremely send in the powder funnel.
Specifically, the powder storage cabin is in an inclined type from top to bottom, and the powder feeding funnel is in a wide-top and narrow-bottom type.
Furthermore, a powder quantity detection sensor is arranged in the powder feeding funnel.
Preferably, the powder storage cabins are two and are respectively arranged on the first side wall and the second side wall of the forming cabin which are opposite in parallel, and the powder discharging mechanism is a spring switch.
Furthermore, the scraper blade is two, two the scraper blade is installed respectively in powder feeding funnel below, is located the powder mouth along length direction's both sides, the horizontal cross section of scraper blade includes inclined plane structure or arc structure.
Preferably, the transverse section of the scraper is of an arc structure.
Further, the scraping plate and the powder feeding funnel are detachably mounted.
Further specifically, the two ends of the metering gear are provided with metering gear shafts, the metering gear shafts are installed on two parallel and opposite side surfaces of the powder feeding hopper, the transverse section of each metering gear is of a gear structure, the tops of the teeth of the metering gears are tangent to the edges of the powder outlet in the length direction, and the driving assembly drives the metering gear shafts to synchronously rotate or rotate along with the rails.
Optionally, the drive assembly includes a transmission shaft, a connecting shaft transmission belt and a metering gear drive motor, the transmission shaft is installed on one side of the powder feeding funnel, the metering gear drive motor is in transmission connection with the transmission shaft, the transmission shaft is connected with the metering gear shaft through the connecting shaft transmission belt, and the metering gear drive motor drives the metering gear shaft to rotate synchronously.
Further preferably, drive assembly includes multistage gear and the many racks that set up side by side, multistage gear installs on the measurement gear axle, multistage gear includes that the gear combination of the different tooth numbers more than two forms, many racks set up along the direction of sending powder funnel reciprocating motion, are located one side of shaping base plate, many rack below is equipped with climbing mechanism, the gear engagement who corresponds in arbitrary one in the many racks of climbing mechanism jacking and the multistage gear drives the measurement gear axle and rotates along with the rail.
Specifically, the length of the rack is equal to the side length of the substrate, and the number of the gears in the multistage gear is not less than 2.
Furthermore, the number of the gears in the multi-stage gear is 3-5.
Further, the reciprocating mechanism comprises a slide rail assembly, the slide rail assembly comprises a reciprocating driver, a slide block and a slide rail, the slide block is connected with the slide rail in a sliding mode, the slide block is fixedly connected with the powder feeding funnel, and the reciprocating driver drives the slide block to reciprocate along the slide rail.
Furthermore, the powder recovery system comprises two residual powder collecting cabins and a waste powder collecting cabin, wherein the residual powder collecting cabins are respectively arranged on two opposite sides of the forming base plate in parallel and are vertical to the length direction of the rack, and the waste powder collecting cabin is arranged between the rack and the forming base plate.
Compared with the prior art, the invention has the beneficial effects that:
1. powder is followed the rotation of measurement gear in the powder paving process, and progressively lower powder is paved, and the mobility of powder is better, more is favorable to spreading the powder fast when promoting shop's powder homogeneity, promotes shop's powder efficiency.
2. The powder is quantitatively spread to a forming substrate through a metering gear, the spread powder is leveled by a scraper, the scraper only does parallel motion, the powder with different particle sizes is distributed more uniformly in the leveling process of the scraper, and the arc-shaped structure of the scraper is utilized to realize a compaction function; the powder outlet is provided with the metering gear and the double scraping plates, the metering gear and the double scraping plates move cooperatively, the metering gear can uniformly take out powder in the powder feeding funnel through rotation, the powder is paved through matching with the scraping plates, redundant powder can be recycled into the powder feeding funnel along with rotation of the metering gear, the powder is saved, and waste is avoided; meanwhile, the powder is rotationally brought out in a metering gear form, so that the requirement on the flowability of the powder is low, and the powder with wider particle size distribution can be used.
3. The powder spreading device integrates the functions of powder feeding and powder spreading, the powder feeding funnel can transfer the powder in the powder storage cabin to the powder feeding funnel through the impact powder discharging mechanism, the loading of the powder is controlled through the stroke of the impact spring, the powder with good flowability can impact a small stroke, the flow is small, the powder is prevented from splashing, the back-and-forth loading time is saved, and the powder with poor flowability can stably flow out only by impacting deeper parts; meanwhile, the impact stroke can be controlled to control the transfer capacity of single powder, different powder loading capacities can be selected for different powders, and stable outflow of the powders in the powder laying process is ensured; set up two and store up the powder cabin, load the powder when being convenient for send powder funnel back and forth movement, improve the operating efficiency.
4. The scraper plate is arranged at the bottom of the powder feeding funnel, so that the structure of the device is simplified; the metering gear can be driven by the transmission assembly to realize synchronous rotation powder feeding or rail-following powder feeding, the rail-following powder feeding can control powder to be uniformly spread on the plane of the substrate, and multi-stage regulation and control can be realized; when multistage powder feeding is not needed, synchronous powder feeding can be adopted, and the powder laying efficiency is improved under the condition of ensuring stable powder discharging.
5. The excessive powder that send the powder funnel to make a round trip to scrape through two surplus powder collection cabins is collected, collects the smog impurity powder that splashes in the forming process through a useless powder collection cabin simultaneously, further practices thrift the powder, purifies simultaneously and spreads the powder environment.
Drawings
Fig. 1 is a schematic front structural view of a powder laying device for additive manufacturing in example 1;
FIG. 2 is a schematic view of FIG. 1 taken along line A;
FIG. 3 is a schematic view showing a connection structure of a powder hopper and a metering gear in embodiment 1;
FIG. 4 is a schematic structural view of a driving unit according to embodiment 1;
fig. 5 is a schematic structural diagram of a driving assembly in embodiment 2.
The powder feeding device comprises a powder storage cabin 1, a reciprocating mechanism 2, a powder feeding hopper 3, a scraper 4, a powder discharging mechanism 5, a powder discharging port 6, a powder spreading mechanism 7, a forming bin 8, a forming base plate 9, a first side wall 10, a second side wall 11, a metering gear 12, a metering gear shaft 13, a gear 14, a slide rail assembly 15, a transmission shaft 16, a transmission belt 17, a connecting shaft transmission belt 18, a driving assembly 19, a slide block 20, a slide rail 21, a multi-stage gear 21, a rack 22, a jacking mechanism 23, a powder recovery system 24, a residual powder collecting cabin 25 and a waste powder collecting cabin 26.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in fig. 1 and 2, a powder paving device for additive manufacturing comprises a reciprocating mechanism, a powder feeding funnel and a scraper, wherein the powder feeding funnel driven by the reciprocating mechanism is located above a forming substrate in a forming bin in a reciprocating motion mode, a powder outlet of a long and narrow structure is formed in the bottom of the powder feeding funnel, the powder outlet is provided with a powder paving mechanism, the powder paving mechanism comprises a metering gear and a driving assembly, the metering gear is arranged along the length direction of the powder outlet, the lower portion of the metering gear protrudes out of the powder feeding funnel, the driving assembly drives the metering gear to spread powder in the powder feeding funnel onto the forming substrate, and the scraper is used for spreading the powder to be leveled.
Still include powder mechanism, powder mechanism and powder feeding funnel intercommunication, powder mechanism is used for adding the powder to sending in the powder funnel. The powder feeding mechanism comprises a powder storage cabin arranged in the forming cabin, a powder discharging mechanism is arranged on the powder storage cabin, and when the powder feeding funnel moves to the lower side of the powder storage cabin through the compound movement mechanism, the powder in the powder storage cabin is transferred to the powder feeding funnel through the powder discharging mechanism.
The powder storage cabin is in an upper inclined type, the powder feeding funnel is in a wide-upper narrow type, and sufficient loading capacity is guaranteed while powder flowing is facilitated.
The powder feeding funnel is internally provided with a powder quantity detection sensor for monitoring the powder loading quantity in the powder feeding funnel, and when the powder is less, the powder is moved to the stroke end point to transfer the powder in the powder storage cabin.
The powder storage cabins are two and are respectively arranged on a first side wall and a second side wall which are opposite to each other in parallel, two rows of round holes with different diameters are arranged at the bottom of the powder storage cabin, the powder feeding mechanism is a spring switch, the spring switch comprises an L-shaped covering plate, the round holes are plugged by the top surface of the covering plate, the side surface of the covering plate is elastically attached to the spring, when the reciprocating mechanism drives the powder feeding funnel to be in contact with the side surface of the covering plate, the spring is compressed, the round holes are opened, and powder falls into the powder feeding funnel through the round holes; when the powder feeding funnel moves towards the opposite direction, the covering plate automatically resets under the action of the spring, and the round hole is blocked; the accessible control send powder funnel striking spring switch's stroke control powder to change the capacity, to the mobility of powder, selects different striking strokes, makes the powder that stores up in the powder cabin stably flow and changes the year to sending in the powder funnel, and the capacity that changes of steerable striking stroke control single powder simultaneously can select different powder loading capacity to different powders, guarantees the stable outflow of powder shop powder in-process.
As shown in fig. 3, the number of the scraping plates is two, the two scraping plates are respectively installed below the powder feeding funnel and located on two sides of the powder outlet along the length direction, and the transverse cross section of each scraping plate is of an arc-shaped structure.
Scraper blade and powder feeding funnel demountable installation, the scraper blade is forked tail connection structure with powder feeding funnel, connect the completion back, further through the tight nail fastening, dismantle the removable not scraper blade of co-altitude of structure, through adjusting the lift height, the removable different specifications of metering gear, different specifications correspond different profile of tooth sizes, the scraper blade is changed in step when changing metering gear, a lowest position with metering gear cooperatees, the shop's powder state of control powder, level and smooth the powder that send out the powder funnel, it can reciprocating motion to make a round trip to be equipped with two scraper blades, avoid the idle transportation waste time, the efficiency of shop's powder is improved.
Spread powder mechanism and include metering gear and drive assembly, metering gear sets up along meal outlet length direction, metering gear's both ends are equipped with the metering gear axle, the metering gear axle is installed on two parallel relative sides of powder feeding funnel, metering gear's transverse section is gear structure, the gear tooth top is tangent with meal outlet along length direction's border.
As shown in fig. 4, drive assembly includes multistage gear and many racks that set up side by side, multistage gear installs on the measurement gear axle, multistage gear includes the gear combination of the different tooth numbers more than two and forms, many racks set up along the direction of sending powder funnel reciprocating motion, are located one side of shaping base plate, many rack below is equipped with climbing mechanism, the gear engagement who corresponds in arbitrary one in the many racks of climbing mechanism jacking and the multistage gear, the drive measurement gear axle rotates along with the rail. The length of rack is equal with the length of side of base plate, the quantity of gear in the multistage gear is 3, and wherein the tooth number of minimum gear is 20, and the tooth number of other two gears increases progressively 5 in proper order, through different tooth numbers and rack toothing, reaches under the powder feeding funnel removes with the same speed, and the metering gear produces different slew rate, reaches the regulation to shop powder volume, and this structural stability is good, need not to increase the power supply. The jacking mechanism comprises guide rails arranged at two ends of a rack, the rack can move in the vertical direction of the guide rails, an air cylinder is arranged below each rack, and the racks are jacked up to be meshed with corresponding gears through the air cylinders.
Reciprocating motion mechanism includes slide rail set spare, slide rail set spare includes reciprocating drive ware (not shown in the figure), slider and slide rail sliding connection, slider and powder feeding funnel fixed connection, reciprocating drive ware drive slider is along slide rail reciprocating motion, and slider and slide rail are two sets of in this embodiment, along reciprocating motion direction parallel arrangement, lie in the both sides of powder feeding funnel, guarantee to send the stability of powder feeding funnel reciprocating motion in-process, and reciprocating drive ware is electric putter, through PLC servo control, when detecting the powder less through powder volume detection sensor, feeds back to the PLC controller, send the powder funnel to remove to stroke terminal point reprint and store up the powder in the powder under-deck.
Still include powder recovery system, powder recovery system includes that two surplus powder collect the cabin and a useless powder collects the cabin, the surplus powder is collected the cabin and is located shaping base plate parallel relative's both sides respectively, and is perpendicular with the length direction of rack, useless powder is collected the cabin and is located between rack and the shaping base plate.
Example 2
The utility model provides a powder paving device of vibration material disk, includes reciprocating motion mechanism, send powder funnel and scraper blade, reciprocating motion mechanism drive send the powder funnel to be located the shaping base plate top reciprocating motion in the storehouse that takes shape, the bottom of sending the powder funnel is equipped with the play powder mouth of long and narrow structure, it is equipped with the powder paving mechanism to go out powder mouth department, it includes metering gear and drive assembly to spread powder mechanism, metering gear sets up along a powder mouth length direction, metering gear's lower part protrusion is to the outside of sending the powder funnel, drive assembly drive metering gear will send the powder in the powder funnel to spread to take shape on the base plate, the powder that the scraper blade is used for spreading carries out the flattening.
Still include powder mechanism, powder mechanism and powder feeding funnel intercommunication, powder mechanism is used for adding the powder to sending in the powder funnel. The powder feeding mechanism in the embodiment is a pipeline for metering powder feeding, powder can be fed to the powder feeding funnel under the protection of inert gas, and the pipeline extends to the outside of the forming bin, so that the powder feeding operation is conveniently carried out in the powder laying process.
The powder storage cabin is in an upper inclined type, and the powder feeding funnel is in a wide-upper narrow type. And a powder quantity detection sensor is arranged in the powder feeding funnel and used for monitoring the powder loading quantity in the powder feeding funnel. The two powder storage cabins are respectively arranged on the first side wall and the second side wall which are opposite to each other in parallel of the forming cabin, and the powder discharging mechanism is a spring switch.
The powder feeding funnel is characterized in that the number of the scraping plates is two, the two scraping plates are respectively arranged below the powder feeding funnel and located on two sides of the powder outlet in the length direction, and the transverse section of each scraping plate is of an inclined plane structure.
Spread powder mechanism and include metering gear and drive assembly, metering gear sets up along meal outlet length direction, metering gear's both ends are equipped with the metering gear axle, the metering gear axle is installed on two parallel relative sides of powder feeding funnel, metering gear's transverse section is gear structure, the tooth top of metering gear is tangent with meal outlet along length direction's border, drive assembly drive metering gear axle synchronous rotation or rotate along with the rail.
As shown in fig. 5, the driving assembly includes a transmission shaft, a connecting shaft transmission belt and a metering gear driving motor, the transmission shaft is installed on one side of the powder feeding funnel, the metering gear driving motor is in transmission connection with the transmission shaft, the transmission shaft is connected with the metering gear shaft through the connecting shaft transmission belt, and the metering gear driving motor drives the metering gear shaft to synchronously rotate.
The reciprocating mechanism comprises a slide rail assembly, the slide rail assembly comprises a reciprocating driver, a slide block and a slide rail, the slide block is connected with the slide rail in a sliding mode, the slide block is fixedly connected with the powder feeding hopper, and the reciprocating driver drives the slide block to reciprocate along the slide rail. The powder feeding funnel can move in a reciprocating way to spread powder through the reciprocating motion mechanism, and the powder spreading device has good stability.
Example 3
The present embodiment is different from embodiment 2 in that:
the drive assembly still includes multistage gear and the many racks that set up side by side, multistage gear installs on the measurement gear axle, multistage gear includes the gear combination of the different number of teeth more than two and forms, many racks set up along the direction of sending powder funnel reciprocating motion, are located one side of shaping base plate, many rack below is equipped with climbing mechanism, the gear engagement who corresponds in arbitrary one in the many racks of climbing mechanism jacking and the multistage gear drives the measurement gear axle and rotates along with the rail. The number of gears in the multi-stage gears is 5, the number of racks is 5, the number of teeth of the smallest gear is 18, and the number of teeth of the rest gears is sequentially increased by 3.
The powder spreading device can be used for synchronously feeding powder and can also be used for feeding powder along with a rail, when one of the powder feeding devices is selected, the other powder feeding device is in an idle state, and the device is more flexible to adapt to different powder spreading requirements.
The rest is the same as in example 2.
Claims (10)
1. The utility model provides a powder paving device of vibration material disk, includes reciprocating motion mechanism, send powder funnel and scraper blade, reciprocating motion mechanism drive send powder funnel to be located the shaping base plate top reciprocating motion in the storehouse of taking shape, its characterized in that send the bottom of powder funnel to be equipped with the powder outlet of long and narrow structure, powder outlet department is equipped with and spreads powder mechanism, spread powder mechanism and include metering gear and drive assembly, metering gear sets up along powder outlet length direction, metering gear's lower part protrusion is to the outside of sending powder funnel, drive assembly drive metering gear will send the powder in the powder funnel to spread to take shape on the base plate, the powder that the scraper blade is used for spreading carries out the flattening.
2. The additive manufactured powder spreading device according to claim 1, further comprising a powder adding mechanism, the powder adding mechanism being in communication with the powder feeding hopper, the powder adding mechanism being configured to add powder into the powder feeding hopper.
3. The additive manufacturing powder spreading device according to claim 2, wherein the powder adding mechanism comprises a powder storage cabin arranged in the forming cabin, a powder discharging mechanism is arranged on the powder storage cabin, and when the powder feeding funnel moves below the powder storage cabin through the reciprocating mechanism, powder in the powder storage cabin is transferred into the powder feeding funnel through the powder discharging mechanism.
4. The additive manufacturing powder spreading device according to claim 3, wherein the number of the powder storage chambers is two, the two powder storage chambers are respectively arranged on a first side wall and a second side wall of the forming chamber, the first side wall and the second side wall are opposite in parallel, and the powder discharging mechanism is a spring switch.
5. The powder spreading device for additive manufacturing according to claim 4, wherein the number of the scraping plates is two, the two scraping plates are respectively arranged below the powder feeding hopper and positioned at two sides of the powder outlet along the length direction, and the transverse cross section of each scraping plate comprises an inclined plane structure or an arc structure.
6. The additive manufacturing powder spreading device according to claim 5, wherein two ends of the metering gear are provided with metering gear shafts, the metering gear shafts are mounted on two parallel opposite side surfaces of the powder feeding hopper, the transverse section of the metering gear is of a gear structure, the tooth tops of the metering gears are tangent to the edge of the powder outlet in the length direction, and the driving assembly drives the metering gear shafts to synchronously rotate or rotate along with the rail.
7. The additive manufacturing powder spreading device according to claim 6, wherein the driving assembly comprises a transmission shaft, a connecting shaft transmission belt and a metering gear driving motor, the transmission shaft is installed on one side of the powder feeding hopper, the metering gear driving motor is in transmission connection with the transmission shaft, the transmission shaft is connected with the metering gear shaft through the connecting shaft transmission belt, and the metering gear driving motor drives the metering gear shaft to synchronously rotate.
8. The powder paving device for additive manufacturing according to claim 6, wherein the driving assembly comprises a multi-stage gear and a plurality of racks arranged side by side, the multi-stage gear is installed on the metering gear shaft and comprises more than two gears with different tooth numbers, the racks are arranged along the reciprocating motion direction of the powder feeding funnel and positioned on one side of the forming substrate, a jacking mechanism is arranged below the racks, and any one of the racks jacked by the jacking mechanism is meshed with the corresponding gear in the multi-stage gear to drive the metering gear shaft to rotate along with the rail.
9. The additive manufacturing powder spreading device according to claim 8, wherein the reciprocating mechanism comprises a slide rail assembly, the slide rail assembly comprises a reciprocating driver, a slide block and a slide rail, the slide block and the slide rail are slidably connected, the slide block is fixedly connected with the powder feeding hopper, and the reciprocating driver drives the slide block to reciprocate along the slide rail.
10. The additive manufacturing powder spreading device according to claim 9, further comprising a powder recovery system, wherein the powder recovery system comprises two remaining powder collecting compartments and one waste powder collecting compartment, the remaining powder collecting compartments are respectively arranged on two opposite sides of the forming base plate in parallel and perpendicular to the length direction of the rack, and the waste powder collecting compartment is arranged between the rack and the forming base plate.
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| CN202023185680.9U CN214494940U (en) | 2020-12-25 | 2020-12-25 | Powder paving device for additive manufacturing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734064A (en) * | 2022-06-10 | 2022-07-12 | 航宇新材料智能制造研究院(山西)有限公司 | Vibration powder spreading device of selective melting forming equipment |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734064A (en) * | 2022-06-10 | 2022-07-12 | 航宇新材料智能制造研究院(山西)有限公司 | Vibration powder spreading device of selective melting forming equipment |
| CN114734064B (en) * | 2022-06-10 | 2022-08-26 | 航宇新材料智能制造研究院(山西)有限公司 | Vibration powder spreading device of selective melting forming equipment |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410205 East of the first floor, 2nd floor, 7th floor, 8th floor, Building B8, Luguyuyuan, No. 27 Wenxuan Road, Changsha High-tech Development Zone, Changsha, Hunan Province Patentee after: Aerospace Science and Industry (Changsha) New Materials Research Institute Co.,Ltd. Address before: 410205 office No.15, aerospace complex, no.217, Fenglin Third Road, Yuelu District, Changsha City, Hunan Province Patentee before: CHANGSHA ADVANCED MATERIALS INDUSTRIAL RESEARCH INSTITUTE Co.,Ltd. |