CN115647394B - Selective laser melting forming equipment capable of realizing continuous production - Google Patents
Selective laser melting forming equipment capable of realizing continuous production Download PDFInfo
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- CN115647394B CN115647394B CN202211587897.3A CN202211587897A CN115647394B CN 115647394 B CN115647394 B CN 115647394B CN 202211587897 A CN202211587897 A CN 202211587897A CN 115647394 B CN115647394 B CN 115647394B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses selective laser melting forming equipment capable of realizing continuous production, which comprises a supporting frame, a forming shell arranged at the top of the supporting frame, and a powder storage tank arranged below the forming shell, wherein a partition plate for dividing the forming shell into an upper cavity and a lower cavity is arranged in the forming shell; the powder feeding system comprises a gantry structure which is arranged in an upper chamber, the powder paving system is a gantry structure which is hung in the upper chamber, the constructing bin is arranged in a lower chamber and comprises a supporting frame, a forming cylinder arranged on the supporting frame, a printing platform arranged in the forming cylinder, a Z-direction driving unit which drives the printing platform to lift and a X-direction driving unit which drives the forming cylinder to horizontally move, the powder overflowing bin is arranged in the lower chamber, and the powder cleaning bins are arranged on two sides of a forming shell. The invention can clean the built bin while printing by the equipment, thereby improving the printing efficiency.
Description
Technical Field
The invention belongs to the technical field of mechanical metal 3D printing and manufacturing, and particularly relates to selective laser melting and forming equipment capable of realizing continuous production.
Background
Selective Laser Melting (SLM) is one of the mainstream technological means in the metal 3D printing industry today, and has the advantages of high material utilization rate, wide applicable material range, capability of manufacturing parts with complex shapes, and the like, and is a rapid molding technology with great development prospects. The main working principle is that a file obtained after three-dimensional modeling slicing is guided into 3D printing equipment, metal powder is flatly paved by a scraper based on a powder feeding and powder paving mode, and high-energy laser is controlled by a laser machine to scan and pile up a formed workpiece layer by layer.
On the existing market, conventional jumbo size metal 3D printer is after accomplishing a component printing completion, need to construct the storehouse earlier and remove clear powder position cooling of stewing, treats to construct the storehouse powder recovery again after cooling completely, and the principle is in inhaling the fixed container that vacuum recovery unit connects with metal powder through the mode that the vacuum is inhaled, and the in-process needs the artifical printing platform that rises repeatedly to construct in the storehouse, until exposing completely and construct the storehouse. And then, taking the part with the substrate out of the powder cleaning bin in a hoisting mode manually. Therefore, the whole part taking process comprises three steps of cooling, powder recovery and substrate part taking.
When the equipment needs to print the next board task, a new substrate is installed at the powder cleaning position, and then the construction bin is moved to the printing position. Therefore, the parts are required to be taken out and mounted on a new substrate in series from the completion of the printing of the parts on the previous plate to the preparation of the printing of the parts on the next plate, the whole process needs at least 24h for large-size metal 3D printing equipment, and the equipment is completely in a stop state in the process.
In addition, for the powder cleaning bin in a single machine mode, the powder cleaning bin is completely in an idle state in the printing process of the equipment for several weeks and cannot be applied to other equipment, and the utilization rate of the module is greatly reduced.
At present, switchable warehouse building schemes based on automatic production lines, such as Germany EOS and SLM Solution, are continuously introduced in domestic and foreign markets, namely, the warehouse building or the forming cylinder is integrally switched to meet the continuous printing of SLM equipment. However, the proposed solutions are all for metal 3D printers with small printing size, and when the above mentioned solution of switching the whole build bins is adopted, the requirements on the carrying capacity and the positioning accuracy of the build bin carrier are very high for SLM devices with more than 600mm × 600mm × 600mm or SLM devices with a single build bin carrying full cylinder of powder, which weighs several tons or even exceeds 10 tons. In addition, the traditional construction bin is switched based on a mechanical positioning and locking mechanism, and the long-time abrasion can cause the loss of precision; secondly, the consistency of the switched building bin and the switched building bin is absolutely high in the whole building bin switching requirement, and the equipment cost or the production line cost and the control difficulty of the mode are very high.
Disclosure of Invention
To solve at least one of the above problems, the present invention provides a selective laser melting and forming apparatus capable of continuous production.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a continuous production laser selective melting forming device comprises a supporting frame, a forming shell detachably fixed at the top of the supporting frame and a powder storage tank arranged below the forming shell, wherein the supporting frame is provided with two sliding rails, the sliding rails extend along the length direction of the supporting frame, a partition plate for dividing the forming shell into an upper chamber and a lower chamber is arranged in the forming shell, a sliding groove is formed in a position, above the sliding rails, of a bottom plate of the lower chamber, and the continuous production laser selective melting forming device further comprises:
a plurality of sets of laser systems arranged outside the forming shell and fixed on the top of the forming shell;
the powder feeding system comprises a powder bin arranged in the upper chamber, a powder falling device connected with the powder bin and an automatic powder supply system connected with the powder bin;
the powder spreading system is a gantry structure suspended in the upper chamber, and two ends of the powder spreading system are fixed on the left side wall and the right side wall of the upper chamber;
the two building bins are arranged in the lower chamber and comprise a supporting frame, a forming cylinder arranged on the supporting frame, a printing platform arranged in the forming cylinder, a Z-direction driving unit for driving the printing platform to lift and a X-direction driving unit for driving the forming cylinder to horizontally move;
the two powder overflowing bins are arranged in the lower cavity and are distributed at two ends of the two building bins;
two clear powder storehouses set up the both sides of shaping shell, clear powder storehouse pass through the pipeline with the powder holding vessel is connected, clear powder storehouse has the casing, the lateral wall of casing be equipped with the opening of establishing the butt joint of storehouse, the diapire of casing is being located the position of slip track top is equipped with the sliding tray, X passes through to the drive unit drive the opening with the laser sintering after establish the storehouse along the slip track removes extremely cool off and clear powder in the clear powder storehouse is handled.
In some embodiments, the partition is provided with two first ports and two second ports, the two first ports and the two second ports are arranged in a row, and the two first ports are located between the two second ports; the two forming cylinders are respectively connected below the two first connectors, the two powder overflowing bins are respectively connected below the second connectors, and the lower ends of the powder overflowing bins are connected with the powder storage tank through pipelines.
In some embodiments, the forming cylinder comprises an upper cylinder body and a lower cylinder body which are detachably connected, the upper cylinder body and the lower cylinder body are both cylinders with upper and lower openings, and the upper cylinder body is connected with the partition plate; the printing platform is movably arranged in the upper cylinder body and sequentially comprises a base plate, a heating plate, a heat insulation plate, an upper sealing plate and a lower sealing plate from top to bottom.
In some embodiments, the Z-direction driving unit is disposed in the lower cylinder, and includes a first driving motor, an electric driving cylinder, a guide rod, and a linear bearing, the first driving motor is connected to the electric driving cylinder, the electric driving cylinder and the linear bearing are fixed to the top of the carriage, and the guide rod passes through the linear bearing and then is connected to the electric driving cylinder and the printing platform, respectively.
In some embodiments, the carrying frame comprises a bottom sealing plate and a connecting frame arranged below the bottom sealing plate, and the lower cylinder body is fixed on the upper surface of the bottom sealing plate; the X-direction driving unit comprises a second driving motor and a speed reducer which are fixed on the lower surface of the bottom sealing plate, a driving shaft connected with the speed reducer, two driving wheels fixed at two ends of the driving shaft and two idle wheels connected with the two driving wheels through the connecting frame, the second driving motor is connected with the speed reducer, and the two driving wheels and the two idle wheels are arranged on the two sliding tracks in a sliding mode.
In some embodiments, the ceiling of the upper chamber is provided with a laser window, and the laser window is positioned above the construction bin; the laser system comprises a laser, a collimating mirror, a beam expanding mirror, a scanning vibrating mirror and a focusing mirror, and laser emitted by the laser is deflected under the control of the scanning vibrating mirror, is emitted into the upper cavity from the laser window and is projected onto the building bin; the scanning galvanometer can be arranged behind the focusing mirror or in front of the focusing mirror.
In some embodiments, the top plate of the upper chamber is provided with a powder inlet, and the automatic powder supply system is connected with the powder bin through the powder inlet; the powder storehouse is upper and lower open-ended casing, the upper end in powder storehouse is connected go up the cavity powder mouth department, the lower extreme is connected with the whitewashed ware that falls, the whitewashed ware that falls is including connecting the powder passageway of powder storehouse lower extreme and setting are in integral key shaft in the powder passageway is through the adjustment the turned angle of integral key shaft controls the powder supply volume.
In some embodiments, the powder paving system comprises two guide supporting units, two first driving units and a powder paving device, wherein the guide supporting units comprise guide rails fixed on the side walls of the upper chamber and sliding blocks connected with the guide rails; the two first driving units are respectively arranged above the guide rail and connected with the powder spreader so as to drive the powder spreader to move along the guide rail; the powder spreading device is arranged between the two guide supporting units, and two ends of the powder spreading device are connected with the two sliding blocks respectively.
In some embodiments, the first driving unit includes a third driving motor, a speed reducer, a tension pulley, a synchronous pulley, and a synchronous belt, the third driving motor is connected to the speed reducer, the synchronous pulley is connected to the speed reducer, the tension pulley is fixed to a sidewall of the upper chamber through a bracket and is disposed above the guide rail in parallel to the synchronous pulley, the synchronous belt is connected to the tension pulley and the synchronous pulley, and the synchronous belt is engaged with the powder spreader to drive the powder spreader to move along the guide rail.
In some embodiments, the sidewall of the upper chamber is further provided with a circulation duct inlet and a circulation duct outlet which are communicated with the upper chamber; the selective laser melting and forming equipment capable of realizing continuous production further comprises a circulating and filtering system, and the circulating and filtering system is connected with the circulating air path inlet and the circulating air path outlet.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
two build the storehouse and two clear powder positions, the storehouse of building after the laser sintering can directly move to clear powder position and cool off the back clearance, and another build the storehouse simultaneously and can synchronously move to print the position and print, ensures that equipment does not shut down continuous operation, when equipment is printed, can carry out the storehouse of building clearance of sintering completion, has improved the printing efficiency of equipment.
Drawings
FIG. 1 is a schematic diagram showing the external structure of a continuous production selective laser melting and forming apparatus according to the present invention;
FIG. 2 is a schematic structural view of a support frame of the present invention;
FIG. 3 is a schematic connection diagram of the powder laying system of the present invention;
FIG. 4 is a schematic diagram of the external structure of the construction chamber of the present invention;
fig. 5 is a schematic structural diagram of an automatic powder supply system of the present invention.
Detailed description of the preferred embodiments
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1 to 5, a laser selective melting forming device capable of continuous production comprises a supporting frame 1, a forming shell 2 detachably fixed at the top of the supporting frame 1, a powder storage tank 7 arranged below the forming shell 2, a laser system arranged at the outer side of the top of the forming shell 2, a powder feeding system arranged in the forming shell 2, a powder paving system, two building bins 5 and two powder overflowing bins, and two powder cleaning bins 6 arranged at two sides of the forming shell 2, wherein the forming shell 2 and the two powder cleaning bins 6 are arranged along the length direction of the supporting frame 1.
The support frame 1 includes a first frame 11, a second frame 12, and a third frame 13 disposed between the first frame 11 and the second frame 12, and the third frame 13 is connected to the first frame 11 and the second frame 12 by bolts. The first frame 11, the second frame 12 and the third frame 13 are each composed of a lower frame, a middle frame and an upper frame which are connected by bolts, the lower frame is provided with a base, support legs fixed below the base and anti-collision columns for fixing the left end and the right end of the base. The support frame 1 is further provided with two sliding rails on the upper frame and the lower frame, respectively, the sliding rails extending along the length direction of the lower frame.
The forming shell 2 is connected with the upper frame of the third frame 13 through bolts, a partition board which divides the cavity of the forming shell 2 into an upper cavity and a lower cavity is arranged in the cavity of the forming shell, two first interfaces and two second interfaces which penetrate through the partition board along the thickness direction are arranged on the partition board, the two first interfaces and the two second interfaces are arranged in a line along the X-axis direction, and the two first interfaces are arranged between the two second interfaces. The front side wall and the rear side wall of the upper cavity are respectively provided with a cabin door, the right side wall of the upper cavity is provided with a circulating air path inlet and a circulating air path outlet which are communicated with the upper cavity, the top plate of the upper cavity is provided with a laser window and a powder inlet, and the laser window is positioned above the first connector. The bottom plate of the lower cavity is provided with a sliding groove at a position above the sliding rail, the sliding groove is provided with a baffle plate, the baffle plate is connected with a cylinder which drives the baffle plate to shield the movable groove or move away from the upper part of the movable groove, and two side walls of the lower cavity are also provided with cabin doors communicated with the powder cleaning cabin.
One set of laser system includes laser instrument, collimating mirror, beam expanding mirror, scanning galvanometer and focusing mirror, and wherein scanning galvanometer both can place behind the focusing mirror, also can place before the focusing mirror, and the laser that the laser instrument sent is through scanning galvanometer control after deflecting to penetrate into the upper chamber from the laser window and throw in first interface.
The powder feeding system comprises a powder bin arranged in the upper chamber, a powder falling device connected with the powder bin and an automatic powder supply system connected with the powder bin. The powder storehouse is upper and lower open-ended casing, and the upper end in powder storehouse is fixed on the roof of upper chamber and sets up in the powder inlet below, and the lower extreme in powder storehouse is connected with the whitewashed ware that falls, is provided with 4 material level switches in the powder storehouse for detect the surplus powder volume in the powder storehouse. The powder falling device comprises a powder channel connected to the lower end of the powder bin and arranged above the construction bin 5 and a spline shaft arranged in the powder channel, and the powder supply amount is controlled by adjusting the rotation angle of the spline shaft. The automatic powder supply system penetrates through the powder inlet to be connected with the powder bin, the powder is automatically conveyed into the powder bin, the automatic powder supply system comprises a powder storage tank 61 for storing the powder, a bottom cyclone separator 64, a top cyclone separation tank 62 and a high-pressure fan 63, the top cyclone separation tank 62 is respectively connected with a bottom outlet of the powder storage tank 61 and an outlet of the high-pressure fan 63 through powder conveying pipelines, a powder outlet of the top cyclone separation tank 62 penetrates through the powder inlet through a powder falling pipeline and then is connected with the powder bin, so that the powder in the powder storage tank 61 is conveyed into the top cyclone separation tank 62 from the powder conveying pipelines through high-speed airflow blown out by the high-pressure fan 63, and after gas-powder separation through the top cyclone separation tank 62, the powder falls into the powder bin from the powder falling pipeline by the gravity of the powder. The air outlet of the top cyclone tank 62 is connected with the air inlet of the bottom cyclone tank 64 through an air conveying pipeline, the air outlet of the bottom cyclone tank 64 is connected with the inlet of the high-pressure fan 63, the discharge hole of the bottom cyclone tank 64 is connected with the top inlet of the powder storage tank 61, so that the gas separated by the top cyclone tank 62 is conveyed to the bottom cyclone tank 64, the separated powder is conveyed to the powder storage tank 61 again after secondary gas-powder separation by the bottom cyclone tank 64, and the separated gas is conveyed to the high-pressure fan 63 to be circulated again.
The powder spreading system is a gantry structure suspended in the upper chamber, and two ends of the powder spreading system are fixed on the left side wall and the right side wall of the upper chamber. The powder paving system comprises two guide supporting units 41, two first driving units 42 and a powder paving device 43, wherein the guide supporting units 41 comprise guide rails 411 fixed on the side walls of the upper chamber and sliding blocks 412 connected with the guide rails 411; the two first driving units 42 are respectively arranged above the guide rail 411 and connected with the powder spreader 43 to drive the powder spreader 43 to move along the guide rail 411, each first driving unit 42 comprises a third driving motor 421, a speed reducer 422, a tension pulley 424, a synchronous pulley 423 and a synchronous belt 425, the speed reducer 422 is fixed on the side wall of the upper chamber through a support, the speed reducer 422 is connected with the third driving motor 421, the synchronous pulley 423 is connected with the speed reducer 422, the tension pulley 424 is fixed on the side wall of the upper chamber through a support and is arranged above the guide rail 411 in parallel with the synchronous pulley 423, the synchronous belt 425 is connected with the tension pulley 424 and the synchronous pulley 423, and the synchronous belt 425 is meshed with the powder spreader 43 to drive the powder spreader 43 to move along the guide rail 411; the powder spreading device 43 is arranged between the two guide supporting units 41, two ends of the powder spreading device 43 are respectively connected with the two sliding blocks 412, the powder spreading device 43 comprises a scraper support and scrapers fixed on the scraper support, the scraper support is approximately in a concave shape and comprises a first support plate 431 and a second support plate 432 which are vertically arranged, and a connecting piece 433 connected between the first support plate 431 and the second support plate 432, the first support plate 431 and the second support plate 432 are respectively connected with the sliding blocks 412, gear teeth meshed with the synchronous belt 425 are arranged at the top ends of the first support plate 431 and the second support plate 432, the connecting piece 433 is used for fixing the scrapers, and the connecting piece 433 is fixed at the lower ends of the first support plate 431 and the second support plate 432.
As a preferred embodiment, the powder laying system has two sets of powder spreaders 43, and the two sets of powder spreaders 43 are driven by the first driving unit 42 to move synchronously along the X-axis direction.
In some embodiments, the powder spreading system is further provided with a dustproof unit connected to the guide rail 411 and the sliding block respectively, and the dustproof unit is a telescopic organ cover, one end of the telescopic organ cover is connected to the tail end of the guide rail 411, and the other end of the telescopic organ cover is connected to the sliding block 412.
The two building bins 5 are arranged in the lower chambers and are respectively positioned below the two first interfaces, and each building bin comprises a bearing frame, a forming cylinder 51 arranged on the bearing frame, a printing platform arranged in the forming cylinder 51, a Z-direction driving unit for driving the printing platform to lift, and an X-direction driving unit for driving the forming cylinder 51 to horizontally move. The bearing frame comprises a bottom sealing plate and a connecting frame arranged below the bottom sealing plate. The forming cylinder 51 comprises an upper cylinder body 511 and a lower cylinder body 512 which are detachably connected, the upper cylinder body 511 and the lower cylinder body 512 are cylinder bodies with upper and lower openings, the opening size of the upper cylinder body 511 is the same as that of the first connector, the top of the upper cylinder body 511 is fixed on the lower surface of the partition plate, the opening of the upper cylinder body 511 is flush with the first connector, and the lower cylinder body 512 is fixed on the upper surface of a bottom sealing plate of the supporting frame. The printing platform activity sets up in last cylinder body 511, and printing platform from the top down includes base plate, hot plate, heat insulating board, upper seal plate and lower closing plate in proper order. The Z-direction driving unit is arranged in the lower cylinder body 512 and comprises a first driving motor, a driving electric cylinder, a guide rod and a linear bearing, the first driving motor is connected with the driving electric cylinder, the driving electric cylinder and the linear bearing are fixed on a top plate of the supporting frame, and the guide rod penetrates through the linear bearing and then is connected with the driving electric cylinder and the printing platform respectively. The X-direction driving unit includes a second driving motor and a decelerator fixed to a lower surface of the bottom sealing plate, a driving shaft connected to the decelerator, two driving wheels fixed to both ends of the driving shaft, and two idle wheels connected to the two driving wheels through a connection frame, wherein the second driving motor is connected to the decelerator, and the driving wheels and the idle wheels are slidably disposed in two sliding rails of the support frame 1, so that the lower cylinder 512 and the Z-direction driving unit are driven by the X-direction driving unit to move along the sliding rails. The X-direction driving unit further comprises two anti-collision blocks, and the two anti-collision blocks are respectively fixed on the two driving wheels.
The two powder overflowing bins are respectively arranged at two ends of the two building bins 5, the upper ends of the powder overflowing bins are connected with the partition plate and are positioned below the second connector, and the lower ends of the powder overflowing bins are connected with the powder storage tank 7 through pipelines.
Two clear powder storehouses 6 pass through the bolt and fix respectively at the upper ledge top of first frame 11 and the upper ledge top of second frame 12, clear powder storehouse 6 has the casing, be equipped with two at least clear powder positions in the casing, the casing is equipped with the glove mouth that corresponds with clear powder position, the roof of casing, the front and back lateral wall all is equipped with the hatch door, the lateral wall of casing is equipped with and builds the opening that storehouse 5 docks, the diapire of casing is equipped with the sliding tray at the position that is located the slip track top, be equipped with the baffle on the sliding tray, the baffle is connected with the cylinder that the drive baffle sheltered from the movable groove or removed from the movable groove top. The X-direction driving unit drives the building bin after laser sintering to move into the powder cleaning bin 6 along the sliding rail through the opening for cooling and powder cleaning. The bottom wall of the casing is also provided with a plurality of powder overflow ports, and each powder overflow port is connected with the powder storage tank 7 through a pipeline.
The selective laser melting and forming equipment capable of realizing continuous production further comprises a circulating and filtering system, the circulating and filtering system is respectively connected with the circulating air path inlet and the circulating air path outlet, and the circulating and filtering system and the upper chamber form a closed circulating system.
The selective laser melting and forming equipment capable of realizing continuous production also comprises a control system connected with a plurality of sets of laser systems, a powder feeding system, a powder spreading system, a construction bin 5, a powder overflowing bin and a powder cleaning bin 6.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
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 the above-described 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.
Claims (10)
1. A selective laser melting forming device capable of continuous production comprises a supporting frame, a forming shell detachably fixed at the top of the supporting frame and a powder storage tank arranged below the forming shell, and is characterized in that the supporting frame is provided with two sliding rails, the sliding rails extend along the length direction of the supporting frame, a partition plate dividing the forming shell into an upper chamber and a lower chamber is arranged in the forming shell, a sliding groove is formed in a position, above the sliding rails, of a bottom plate of the lower chamber, and the selective laser melting forming device capable of continuous production further comprises:
the multiple sets of laser systems are arranged outside the forming shell and fixed at the top of the forming shell;
the powder feeding system comprises a powder bin arranged in the upper chamber, a powder falling device connected with the powder bin and an automatic powder supply system connected with the powder bin;
the powder spreading system is a gantry structure suspended in the upper chamber, and two ends of the powder spreading system are fixed on the left side wall and the right side wall of the upper chamber;
the two building bins are arranged in the lower cavity and comprise a bearing frame, a forming cylinder arranged on the bearing frame, a printing platform arranged in the forming cylinder, a Z-direction driving unit for driving the printing platform to lift and a X-direction driving unit for driving the forming cylinder to horizontally move;
the two powder overflowing bins are arranged in the lower cavity and are distributed at two ends of the two building bins;
two clear powder storehouses set up the both sides of shaping shell, clear powder storehouse pass through the pipeline with the powder holding vessel is connected, clear powder storehouse has the casing, the lateral wall of casing be equipped with found the opening of storehouse butt joint, the diapire of casing is lieing in the position of slip track top is equipped with the sliding tray, X passes through to the drive unit drive after the opening will laser sintering found the storehouse along the slip track removes extremely cool off and clear powder is handled in the clear powder storehouse.
2. A continuously producible selective laser melt forming apparatus according to claim 1, wherein:
the partition plate is provided with two first interfaces and two second interfaces, the two first interfaces and the two second interfaces are arranged in a row, and the two first interfaces are positioned between the two second interfaces;
the two forming cylinders are respectively connected below the two first connectors, the two powder overflowing bins are respectively connected below the second connectors, and the lower ends of the powder overflowing bins are connected with the powder storage tank through pipelines.
3. A continuously producible selective laser melt forming apparatus according to claim 1, wherein:
the forming cylinder comprises an upper cylinder body and a lower cylinder body which are detachably connected, the upper cylinder body and the lower cylinder body are both cylinder bodies with upper and lower openings, and the upper cylinder body is connected with the partition plate;
the printing platform is movably arranged in the upper cylinder body, and the printing platform sequentially comprises a base plate, a heating plate, a heat insulation plate, an upper sealing plate and a lower sealing plate from top to bottom.
4. A continuously producible laser selective melt forming apparatus according to claim 3, wherein:
the Z-direction driving unit is arranged in the lower cylinder body and comprises a first driving motor, a driving electric cylinder, a guide rod and a linear bearing,
the first driving motor is connected with the driving electric cylinder, the driving electric cylinder and the linear bearing are fixed to the top of the bearing frame, and the guide rod penetrates through the linear bearing and then is connected with the driving electric cylinder and the printing platform respectively.
5. A continuously producible laser selective melt forming apparatus according to claim 3, wherein:
the bearing frame comprises a bottom sealing plate and a connecting frame arranged below the bottom sealing plate, the lower cylinder body is fixed on the upper surface of the bottom sealing plate, and the X-direction driving unit is fixed on the lower surface of the bottom sealing plate;
the X-direction driving unit comprises a second driving motor and a speed reducer which are fixed on the lower surface of the bottom sealing plate, a driving shaft connected with the speed reducer, two driving wheels fixed at two ends of the driving shaft and two idle wheels connected with the two driving wheels through the connecting frame, the second driving motor is connected with the speed reducer, and the two driving wheels and the two idle wheels are arranged on the two sliding tracks in a sliding mode.
6. A continuously producible selective laser melt forming apparatus according to claim 1, wherein:
a laser window is arranged on the top plate of the upper chamber and is positioned above the construction bin;
the laser system comprises a laser, a collimating mirror, a beam expanding mirror, a scanning vibrating mirror and a focusing mirror, and laser emitted by the laser is deflected under the control of the scanning vibrating mirror, is emitted into the upper cavity from the laser window and is projected onto the building bin;
the scanning galvanometer can be arranged behind the focusing mirror or in front of the focusing mirror.
7. A continuously producible laser selective melt forming apparatus according to claim 1, wherein:
a powder inlet is formed in the top plate of the upper chamber, and the automatic powder supply system penetrates through the powder inlet to be connected with the powder bin;
the powder bin is a shell with an upper opening and a lower opening, the upper end of the powder bin is connected with the powder inlet of the upper chamber, the lower end of the powder bin is connected with the powder falling device,
the powder falling device comprises a powder channel connected to the lower end of the powder bin and a spline shaft arranged in the powder channel, and the powder supply amount is controlled by adjusting the rotation angle of the spline shaft.
8. A continuously producible selective laser melt forming apparatus according to claim 1, wherein:
the powder spreading system comprises two guide supporting units, two first driving units and a powder spreader, wherein each guide supporting unit comprises a guide rail fixed on the side wall of the upper cavity and a sliding block connected with the guide rail;
the two first driving units are respectively arranged above the guide rail and connected with the powder spreader so as to drive the powder spreader to move along the guide rail;
the powder spreading device is arranged between the two guide supporting units, and two ends of the powder spreading device are connected with the two sliding blocks respectively.
9. A continuously producible laser selective melt forming apparatus according to claim 8, wherein:
the first driving unit comprises a third driving motor, a speed reducer, a tension pulley, a synchronous pulley and a synchronous belt, the third driving motor is connected with the speed reducer, the synchronous pulley is connected with the speed reducer, the tension pulley is fixed on the side wall of the upper cavity through a support and is arranged above the guide rail in parallel with the synchronous pulley, the synchronous belt is connected with the tension pulley and the synchronous pulley, and the synchronous belt is meshed with the powder spreading device to drive the powder spreading device to move along the guide rail.
10. A continuously producible laser selective melt forming apparatus according to claim 1, wherein:
the side wall of the upper cavity is also provided with a circulating air path inlet and a circulating air path outlet which are communicated with the upper cavity;
the selective laser melting and forming equipment capable of realizing continuous production further comprises a circulating and filtering system, and the circulating and filtering system is connected with the circulating air path inlet and the circulating air path outlet.
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| CN104369379A (en) * | 2014-11-06 | 2015-02-25 | 于雷 | Three-dimensional printer |
| CN204366038U (en) * | 2014-12-17 | 2015-06-03 | 华南理工大学 | A kind of two-cylinder type desktop type selective laser melt-forming equipment |
| CN107351397B (en) * | 2017-04-25 | 2023-09-01 | 西安交通大学青岛研究院 | Parallel double-travelling printing mechanism |
| CN206953590U (en) * | 2017-04-25 | 2018-02-02 | 西安交通大学青岛研究院 | Parallel duplicate rows walks printing mechanism |
| CN108015295A (en) * | 2017-12-29 | 2018-05-11 | 北京康普锡威科技有限公司 | A kind of preparation method of increasing material manufacturing metal-based nano composite powder material |
| CN110548867B (en) * | 2018-06-04 | 2022-06-14 | 陕西恒通智能机器有限公司 | Laser 3D printer with telescopic cylinder body |
| CN215589947U (en) * | 2021-09-18 | 2022-01-21 | 重庆理工大学 | Multi-material 3D printer based on jet bonding technology |
| CN217990940U (en) * | 2022-09-08 | 2022-12-09 | 苏州倍丰智能科技有限公司 | Multi-wavelength selective laser forming equipment |
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