CN112024884A - 3D printing equipment for metal powder laying laser additive manufacturing SLM technology - Google Patents
3D printing equipment for metal powder laying laser additive manufacturing SLM technology Download PDFInfo
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- CN112024884A CN112024884A CN202011079783.9A CN202011079783A CN112024884A CN 112024884 A CN112024884 A CN 112024884A CN 202011079783 A CN202011079783 A CN 202011079783A CN 112024884 A CN112024884 A CN 112024884A
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- 239000002184 metal Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000654 additive Substances 0.000 title claims abstract description 24
- 230000000996 additive effect Effects 0.000 title claims abstract description 24
- 238000010146 3D printing Methods 0.000 title claims abstract description 23
- 239000000843 powder Substances 0.000 title claims description 196
- 238000005516 engineering process Methods 0.000 title claims description 6
- 238000007639 printing Methods 0.000 claims abstract description 102
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims description 52
- 238000003892 spreading Methods 0.000 claims description 27
- 230000007480 spreading Effects 0.000 claims description 24
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 3
- 238000010410 dusting Methods 0.000 claims 9
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 60
- 238000003860 storage Methods 0.000 description 41
- 238000007599 discharging Methods 0.000 description 14
- 238000012545 processing Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 238000009700 powder processing Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses 3D printing equipment for a metal powder-laying laser additive manufacturing SLM (selective laser melting) process, which comprises a rack, wherein a printing base station movable cavity for a printing base station to move in is arranged in the middle of the rack, an operation space is arranged above the printing base station movable cavity, the bottom of the operation space is an operation table, a gap in the same extending direction as the printing base station is arranged in the middle of the operation table, seam clamping sheets are respectively arranged on the left side and the right side of the gap of the operation table, and the two seam clamping sheets form a seam in the same extending direction as the printing base station. The forming of the workpiece is from inside to outside, each layer is on the same radius, the laser scanning is selectively carried out only in the axial direction, the workpiece is printed with a line at the same radius and then rotated by an angle corresponding to the line width, the whole circle of the workpiece with the same radius is printed and then sunk by the thickness of a slice, and the process is continuously repeated to complete the manufacturing of the whole workpiece.
Description
Technical Field
The invention relates to the technical field of SLM (selective laser melting) equipment, in particular to 3D (three-dimensional) printing equipment for a SLM (selective laser melting) process of metal powder-laying laser additive manufacturing.
Background
The Selective Laser Melting (SLM) technology is used for rapidly melting preset paved layer by layer of metal powder by using a precise focusing light spot, and functional parts with any shapes and complete metallurgical bonding can be almost directly obtained. The compactness can reach nearly 100 percent, is a rapid forming technology with great development prospect, and particularly has very important application prospect in the fields of aerospace, medical treatment, automobiles, molds and the like.
The Chinese patent No. CN201720583224.9 provides a quick leveling device for a base platform of SLM equipment, wherein a base shaft can move up and down, but the processing technology adopts the step-by-step printing from top to bottom, but most of the current SLM manufacturing of rotating parts grows along the axial direction and is limited by the diameter size. Even more disadvantageously, the geometric variations of these components in the axial direction add substantial support requirements. The working state of the rotating part and the loading condition of the structure are required to meet the requirement of axial symmetry on radial equal diameter according to the characteristic of axial symmetry, including the manufacturing process.
For rotating machinery such as an aircraft engine and the like, a plurality of key parts are in an axisymmetric shape, in particular to impeller machinery. Most rotating parts are currently manufactured with SLMs that are grown axially, limited by the diameter size. Even more disadvantageously, the geometric variations of these components in the axial direction add substantial support requirements. The working state of the rotating part and the loading condition of the structure are required to meet the requirement of axial symmetry on radial equal diameter according to the characteristic of axial symmetry, including manufacturing process and the like.
However, the current 3D printing equipment for the SLM process of metal powder-laying laser additive manufacturing still has the following problems:
1. the printing base can only move up and down generally, and can print layer by layer, and certain rotating parts are difficult to meet the requirement of axial symmetry during processing, so that processed products are unqualified;
2. lack the drive arrangement who is fit for the degree of freedom printing base station, current drive arrangement only is applicable to the platform type and prints the base station, can't satisfy some rectangular form (or long form) and print the printing demand of base station.
Based on the situation, the invention provides 3D printing equipment for the metal powder-laying laser additive manufacturing SLM process, which can effectively solve the problems.
Disclosure of Invention
The invention aims to provide 3D printing equipment for a metal powder-laying laser additive manufacturing SLM process. The 3D printing equipment for the metal powder-spreading laser additive manufacturing SLM process is simple in structure and convenient to use, on the basis of the existing mature SLM principle, a long-strip-shaped (or named long base shaft) printing base platform is adopted, a workpiece is formed from inside to outside, each layer is on the same radius, laser scanning is selectively carried out only in the axial direction, the workpiece rotates by an angle corresponding to the width of one line after printing one line at the same radius, the whole circle of the workpiece with the same radius is printed, then the workpiece is sunk by the thickness of one slice, and the process is continuously repeated to complete the manufacturing of the whole workpiece;
the driving device adopts the ingenious combination of the rotary driving mechanism and the lifting driving mechanism, not only can move up and down, but also can rotate, thereby well meeting the requirements of processing symmetry and the like of some rotating parts and ensuring the quality of processed products; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
According to the rotary driving mechanism, the support plate, the two-way screw rod, the knob, the cross rod, the vertical plate, the connecting rod and the arc-shaped plate are arranged, so that a long-strip-shaped (or called long-shaped) printing base station can be conveniently and quickly fixed on the second disc, and the support plate, the rotating rod, the first disc, the driven gear, the servo motor, the driving gear and the stand column are arranged to drive the second disc to rotate, so that the printing base station can rotate, the requirements of processing symmetry and the like of some rotating parts are well met, and the quality of processed products is guaranteed; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
The invention is realized by the following technical scheme:
A3D printing device for a metal powder-laying laser additive manufacturing SLM process comprises a frame,
the middle part of the rack is provided with a printing base platform movable cavity for the printing base platform to move in, an operation space is arranged above the printing base platform movable cavity, the bottom of the operation space is an operation platform, the middle part of the operation platform is provided with a gap in the same direction as the extending direction of the printing base platform, the left side and the right side of the gap of the operation platform are respectively provided with a seam clamping piece, and the two seam clamping pieces form a seam in the same direction as the extending direction of the printing base platform;
a laser is arranged right above the crack, and a printing base station is arranged in the movable cavity of the printing base station and is positioned right below the crack;
one end of the printing base platform is connected with a driving device, and the driving device comprises a rotary driving mechanism and a lifting driving mechanism;
the powder spreading device is arranged on the operating platform, and a powder spreading roller of the powder spreading device is positioned on one side above the crack.
Preferably, the printing base platform comprises a base platform connecting part and a base platform body; the base station connecting part plays a role in connection and fixation; the base station body extends in a long strip shape, and the circumferential surface of the base station body in the extending direction is a printing support surface;
the rotary driving mechanism is connected with the base station connecting part and is used for driving the printing base station to rotate;
the upper part of the lifting driving mechanism is connected with the rotary driving mechanism, and the lifting direction of the lifting driving mechanism is mutually vertical to the axial direction of a rotating rod of the rotary driving mechanism;
the rotary driving mechanism comprises a bottom plate, supporting legs are fixed at four corners of the top of the bottom plate, a supporting plate is arranged above the bottom plate, the tops of the supporting legs are fixedly connected with the bottom of the supporting plate, the top of the bottom plate is rotatably connected with a rotating rod through a bearing, the top end of the rotating rod penetrates through the top of the supporting plate and is fixedly provided with a first disc, the top end of the rotating rod is rotatably connected with the supporting plate through a bearing, a driven gear is fixedly sleeved on the surface of the rotating rod, a servo motor is fixed at the top of the bottom plate, a driving gear is fixed on an output shaft of the servo motor and is meshed with the driving gear, four stand columns are symmetrically fixed at the top of the first disc, a second disc is arranged above the first disc, the tops of the stand columns are fixedly connected with the bottom of the second disc, and support plates are symmetrically fixed at the top of the first disc, the top of first disc is provided with two-way lead screw, the both ends of two-way lead screw all rotate with a lateral wall of adjacent mounting panel respectively through the bearing and are connected, the one end of two-way lead screw runs through a lateral wall of adjacent mounting panel and is fixed with the knob, the below of two-way lead screw is provided with the horizontal pole, the both ends of horizontal pole respectively with a lateral wall fixed connection of adjacent mounting panel, the both ends lateral wall of two-way lead screw all has the riser through threaded connection, the equal sliding connection of riser is on the surface of horizontal pole, the bar opening has been seted up at the top of second disc, the bar opening all runs through on the top of riser, a lateral wall of riser all is fixed with the connecting rod, the one end of connecting rod all is fixed with.
The 3D printing equipment for the metal powder-spreading laser additive manufacturing SLM process is simple in structure and convenient to use, on the basis of the existing mature SLM principle, a long-strip-shaped (or named long base shaft) printing base platform is adopted, a workpiece is formed from inside to outside, each layer is on the same radius, laser scanning is selectively carried out only in the axial direction, the workpiece rotates by an angle corresponding to the width of one line after printing one line at the same radius, the whole circle of the workpiece with the same radius is printed, then the workpiece is sunk by the thickness of one slice, and the process is continuously repeated to complete the manufacturing of the whole workpiece;
according to the rotary driving mechanism, the support plate, the two-way screw rod, the knob, the cross rod, the vertical plate, the connecting rod and the arc-shaped plate are arranged, so that a long-strip-shaped (or called long-shaped) printing base station can be conveniently and quickly fixed on the second disc, and the support plate, the rotating rod, the first disc, the driven gear, the servo motor, the driving gear and the stand column are arranged to drive the second disc to rotate, so that the printing base station can rotate, the requirements of processing symmetry and the like of some rotating parts are well met, and the quality of processed products is guaranteed; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
Preferably, the extending direction of the printing base (2) and the extending direction of the powder spreading roller (801) are parallel to each other.
Preferably, the lifting driving mechanism comprises an L-shaped fixing plate, a hydraulic rod and a hydraulic cylinder which are sequentially arranged from top to bottom;
the horizontal part of the L-shaped fixing plate is connected with the upper end of the hydraulic rod, the vertical part of the L-shaped fixing plate is connected with the bottom plate of the rotary driving mechanism, and the extension direction of the arc-shaped plate is perpendicular to that of the hydraulic rod.
The 3D printing equipment for the metal powder laying laser additive manufacturing SLM process is simple in structure and convenient to use, the driving device adopts the ingenious combination of the rotary driving mechanism and the lifting driving mechanism, the driving device not only can move up and down, but also can rotate, the requirements of processing symmetry and the like of some rotating parts are well met, and the quality of processed products is ensured; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
Preferably, the base body extends in a long shape, and a cross section (profile) at any position in an extending direction thereof is circular.
Preferably, the base body extends in a cylindrical shape.
Preferably, the base connecting part is in the shape of a cylinder.
Preferably, four sliding blocks are symmetrically fixed to the bottom of the first disc, an annular sliding groove is formed in the top of the supporting plate, and the four sliding blocks are connected in the annular sliding groove in a sliding mode.
Preferably, the two ends of the bidirectional screw rod are opposite in thread direction, two threaded holes corresponding to threads at two ends of the bidirectional screw rod are formed in one side wall of each vertical plate respectively, two ends of the bidirectional screw rod are connected with the threaded holes of the corresponding vertical plates respectively in a threaded mode, sliding holes are formed in one side wall of each vertical plate, and the cross rod penetrates through the sliding holes.
Preferably, the surface of the knob is provided with anti-skid lines.
Preferably, the surfaces of the arc-shaped plates, which are far away from the connecting rod, are fixed with anti-skidding rubber pads.
Preferably, the powder paving device is connected with a metal powder processing system for SLM equipment, the metal powder processing system for SLM equipment comprises a powder cylinder and a powder feeding device, and the powder cylinder, the powder feeding device and the powder paving device are sequentially communicated through a powder feeding pipe;
the powder cylinder comprises a first powder cylinder block, a second powder cylinder block and a third powder cylinder block, wherein the first powder cylinder block comprises a first wear-resistant layer, a strength layer and a second wear-resistant layer, the inner wall of the first wear-resistant layer is fixedly connected with the surface of the strength layer, the inner wall of the strength layer is fixedly connected with the surface of the second wear-resistant layer, a sealing plate is fixedly connected with one side of each of the first powder cylinder block and the third powder cylinder block, a sealing block is fixedly connected with one side of the sealing plate, sealing grooves are formed in two sides of the second powder cylinder block, the surface of the sealing plate is in sliding connection with the inner wall of each sealing groove, a positioning rod is fixedly connected with the inner wall of each sealing groove, the surface of the positioning rod penetrates through the bottom of the sealing plate, a positioning groove is formed in the inner wall of each sealing groove, the inner wall of each positioning groove is in sliding connection with the surface of the, a screw rod penetrates through the sealing block, and the surface of the screw rod is in threaded connection with the inner wall of the thread groove;
the powder feeding device comprises a temporary storage box and a controller, wherein the temporary storage box is respectively provided with a feeding pipe and a discharging pipe, and the feeding pipe and the discharging pipe are respectively connected with a powder storage device and a powder using device; the feeding pipe and the discharging pipe are respectively provided with a first one-way valve and a second one-way valve, and the first one-way valve and the second one-way valve are both opened towards the powder output end; a sliding piston is also arranged in the temporary storage box in a sliding manner, the back of the sliding piston is connected with a telescopic motor for driving the sliding piston to move, and the telescopic motor is connected with a controller; the temporary storage box is also provided with a displacement sensor for detecting the position of the sliding piston, and the displacement sensor is connected with the controller.
The metal powder processing system for the SLM equipment is simple in structure and convenient to use, and can stably and quantitatively convey (metal) powder in the powder cylinder to the powder paving device through the powder conveying device, and the powder paving device can stably and efficiently pave the powder, so that automatic feeding and accurate feeding are realized; the printing forming efficiency of the SLM equipment and the quality of printed finished products are improved.
Preferably, the two first wear-resistant layers and the second wear-resistant layer are both spray-coated layers, and the strength layer is a high-toughness composite mortar layer.
Preferably, the two first powder cylinder blocks and the third powder cylinder block are the same in shape and size, and the two first powder cylinder blocks and the third powder cylinder block are respectively arranged on two sides of the second powder cylinder block.
Preferably, the diameter of the surface of the sealing plate is matched with that of the sealing groove, and the diameter of the surface of the sealing block is matched with that of the sealing groove.
Preferably, the bottom wall of the sealing plate is provided with a positioning hole, and the inner wall of the positioning hole is in sliding connection with the surface of the positioning rod;
preferably, a limiting hole is formed in the sealing block, and the inner portion of the limiting hole penetrates through the surface of the screw rod.
Preferably, the sliding piston comprises a metal valve core and a rubber sealing sleeve, the metal valve core is wrapped by the rubber sealing sleeve, the rear end face of the metal valve core is connected with a telescopic rod through a connecting sleeve thread, and the other end of the telescopic rod is connected with a telescopic motor through a connector.
Preferably, the outer surface of the rubber sealing sleeve is also provided with a plurality of sealing grooves.
Preferably, the tail end of the temporary storage box is also provided with a travel switch connected with the controller.
Preferably, the temporary storage box is further provided with an observation window for observing the condition in the box.
Preferably, the controller adopts a PLC controller;
preferably, inlet pipe and discharging pipe all set up in the terminal surface of temporary storage case.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the 3D printing equipment for the metal powder-spreading laser additive manufacturing SLM process is simple in structure and convenient to use, on the basis of the existing mature SLM principle, a long-strip-shaped (or named long base shaft) printing base platform is adopted, a workpiece is formed from inside to outside, each layer is on the same radius, laser scanning is selectively carried out only in the axial direction, the workpiece rotates by an angle corresponding to the width of one line after printing one line at the same radius, the whole circle of the workpiece with the same radius is printed, then the workpiece is sunk by the thickness of one slice, and the process is continuously repeated to complete the manufacturing of the whole workpiece;
the driving device adopts the ingenious combination of the rotary driving mechanism and the lifting driving mechanism, not only can move up and down, but also can rotate, thereby well meeting the requirements of processing symmetry and the like of some rotating parts and ensuring the quality of processed products; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
According to the rotary driving mechanism, the support plate, the two-way screw rod, the knob, the cross rod, the vertical plate, the connecting rod and the arc-shaped plate are arranged, so that a long-strip-shaped (or called long-shaped) printing base station can be conveniently and quickly fixed on the second disc, and the support plate, the rotating rod, the first disc, the driven gear, the servo motor, the driving gear and the stand column are arranged to drive the second disc to rotate, so that the printing base station can rotate, the requirements of processing symmetry and the like of some rotating parts are well met, and the quality of processed products is guaranteed; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
In addition to this, the present invention is,
the metal powder processing system for the SLM equipment is simple in structure and convenient to use, and can stably and quantitatively convey (metal) powder in the powder cylinder to the powder paving device through the powder conveying device, and the powder paving device can stably and efficiently pave the powder, so that automatic feeding and accurate feeding are realized; the printing forming efficiency of the SLM equipment and the quality of printed finished products are improved.
According to the powder cylinder, the first powder cylinder block, the second powder cylinder block and the third powder cylinder block are used, so that the powder cylinder is split into three parts, the inner wall of the powder cylinder can be precisely machined in a milling mode, the powder cylinder can better meet machining requirements such as dimensional accuracy and sealing performance, the first powder cylinder block, the second powder cylinder block and the third powder cylinder block are conveniently assembled by using the sealing groove, the sealing plate, the positioning groove, the sealing block, the lead screw and the screw, the inner wall of the powder cylinder is conveniently machined, and the labor amount of workers is reduced.
According to the powder cylinder, the first wear-resistant layer, the strength layer and the second wear-resistant layer are used for enhancing the strength and the wear-resistant performance of the powder cylinder, when the powder cylinder is used, the abrasion of the inner wall of the powder cylinder can be reduced, the printing precision of the equipment is improved, and meanwhile the service life of the powder cylinder is prolonged.
The powder feeding device comprises a temporary storage box and a controller, wherein the temporary storage box is provided with a feeding pipe and a discharging pipe, the feeding pipe and the discharging pipe are respectively provided with a first one-way valve and a second one-way valve, the first one-way valve and the second one-way valve are both opened towards the material output direction, meanwhile, a sliding piston is arranged in the temporary storage box in a sliding mode and fixedly connected with a telescopic motor, the controller controls the telescopic motor to act, and the position of the sliding piston is monitored through a displacement sensor;
according to the powder feeding device, the first one-way valve and the second one-way valve are both opened towards the material output direction, so that when the telescopic motor drives the sliding piston to move outwards, the first one-way valve is in an open state, the second one-way valve is in a closed state, and at the moment, powder is pumped into the temporary storage box; when the telescopic motor drives the sliding piston to move inwards, the first one-way valve is closed, the second one-way valve is opened, and at the moment, the powder in the temporary storage box is output; the sectional area of the temporary storage box is constant, so that the amount of the powder pumped in and extruded can be accurately controlled by measuring the displacement length of the sliding piston, and the accurate conveying of the powder is realized;
compared with the prior art, the powder feeding device realizes quantitative powder feeding to the 3D printer through simple structural design, ensures the uniformity of powder feeding, and reduces the waste rate of raw materials; meanwhile, the invention has simple and reliable structure and greatly reduces the maintenance difficulty of the equipment.
The powder feeding device comprises the metal valve core and the rubber sealing table, the metal valve core is wrapped by the rubber sealing sleeve, the rigidity of the whole sliding piston can be effectively improved by adopting the metal valve core, the powder feeding precision and the tightness of the temporary storage box cannot be influenced by deformation in the process that the telescopic motor drives the sliding piston to slide, and the connection performance between the telescopic rod and the sliding piston cannot be influenced by excessive deformation; meanwhile, the airtightness between the sliding piston and the temporary storage box is improved through the flexible structure of the rubber sealing sleeve, and the rigidity and the flexibility can be effectively considered;
according to the powder feeding device, the metal valve core is connected with the telescopic rod through the connecting sleeve at the rear end, and the telescopic rod is connected with the telescopic motor through the connector, so that the telescopic rod can be rapidly disassembled and assembled, and the maintenance difficulty of equipment is reduced.
The outer surface of the rubber sealing sleeve of the powder feeding device is provided with the plurality of sealing grooves, so that on one hand, the friction between the rubber sleeve and the inner surface of the temporary storage box is reduced, the abrasion is reduced, and meanwhile, the requirement on a telescopic motor is also reduced; meanwhile, the plurality of sealing grooves can buffer the powder entering the gap between the rubber sealing sleeve and the inner wall of the temporary storage box, so that the powder is prevented from continuously diffusing outwards, and the sealing performance of the whole set of equipment is improved.
The powder feeding device is provided with the travel switch at the tail end of the temporary storage box, the travel of the sliding piston is controlled through the travel switch, the powder feeding device is prevented from being pulled out of the temporary storage box by the telescopic motor, and the stability and the reliability of the device are improved.
The temporary storage box of the powder feeding device is also provided with the observation window, and workers can effectively check the powder amount in the box body and the internal condition of the temporary storage box through the observation window, so that the working condition in the box body is judged, the maintenance difficulty of equipment is reduced, and the equipment is prevented from idling.
The feeding pipe and the discharging pipe of the powder feeding device are arranged on the end face of the temporary storage box, and the feeding pipe and the discharging pipe arranged on the same end face can prolong the formation of the sliding piston to the maximum extent, so that the temporary storage box is utilized to the maximum extent, and the influence of powder stored in the temporary storage box on the quality of the powder is avoided.
Drawings
FIG. 1 is a partial schematic structural view of the present invention (with parts omitted);
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 illustrating the present invention (the workpiece is gradually enlarged during printing);
FIG. 3 is a partially enlarged view of region D of FIG. 2 according to the present invention;
FIG. 4 is a schematic cross-sectional view of B-B of FIG. 1 according to the present invention;
FIG. 5 is a schematic structural diagram of the printing base, the rotary driving mechanism and the lifting driving mechanism according to the present invention;
FIG. 6 is a schematic structural view of the rotary driving mechanism and the lifting driving mechanism according to the present invention;
FIG. 7 is a schematic view of the overall structure of the rotary drive mechanism according to the present invention;
FIG. 8 is a schematic top view of the support plate of the present invention;
FIG. 9 is a schematic bottom view of the first disk of the present invention;
fig. 10 is a schematic side view of a riser of the present invention.
FIG. 11 is a schematic structural view of the lift driving mechanism according to the present invention;
FIG. 12 is a schematic structural view of the powder cylinder, the powder feeding device and the powder spreading device of the present invention;
FIG. 13 is a schematic structural view of the powder jar of the present invention;
FIG. 14 is a schematic view of the first compact block of the present invention;
FIG. 15 is a schematic structural view of a second compact block according to the present invention;
FIG. 16 is an enlarged view taken at A of FIG. 15 in accordance with the present invention;
FIG. 17 is an enlarged view taken at B of FIG. 13 in accordance with the present invention;
FIG. 18 is an enlarged view at C of FIG. 14 in accordance with the present invention;
FIG. 19 is a cross-sectional view of a first compact block according to the present invention;
FIG. 20 is a schematic structural view of a powder feeding device according to the present invention;
fig. 21 is a schematic view of the internal structure of the powder feeding device according to the present invention.
In the figure: 100. a rotation driving mechanism; 200. a lifting drive mechanism; 2. printing a base station; 201. a base station connecting part; 202. and a base body; 2021. printing a support surface; 3. a frame; 301. a movable cavity of the printing base station; 302. an operating space; 303. an operation table; 3031. a gap; 5. a workpiece; 6. a seam-clamping sheet; 4. a laser; 401. a laser scanning range; 801. spreading a powder roller;
11. a base plate; 12. supporting legs; 13. a support plate; 14. a rotating rod; 15. a first disc; 16. a driven gear; 17. a servo motor; 18. a driving gear; 19. a column; 110. a second disc; 111. a mounting plate; 112. a bidirectional screw rod; 113. a knob; 114. a cross bar; 115. a vertical plate; 116. a strip-shaped through opening; 117. a connecting rod; 118. an arc-shaped plate; 119. a slider; 120. an annular chute; 121. a threaded hole; 122. a slide hole; 123. an anti-skid rubber pad;
211. an L-shaped fixing plate; 210. a hydraulic lever; 29. a hydraulic cylinder; 2111. a horizontal portion; 2112. a vertical portion;
10. a powder jar; 700. a powder feeding device; 800. a powder spreading device; 1. a powder feeding pipe;
01. a first powder jar block; 0101. a first wear resistant layer; 0102. a strength layer; 0103. a second wear layer; 02. a second powder jar block; 03. a third powder jar block; 04. a sealing plate; 05. a sealing block; 06. a sealing groove; 07. positioning a rod; 08. positioning a groove; 09. a thread groove; 010. a screw rod; 011. positioning holes; 012. a limiting hole;
71. temporary storage box, 72, controller, 73, inlet pipe, 74, discharging pipe, 75, first check valve, 76, second check valve, 77, sliding piston, 78, flexible motor, 79, displacement sensor, 710, travel switch, 711, observation window, 771, metal valve core, 772, rubber seal cover, 773, connecting sleeve, 774, telescopic link, 775, connector, 776, seal groove.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The technical features (the components/elements of the invention) of the powder spreading device and the like in the invention are obtained from conventional commercial sources or prepared by conventional methods, and the specific structure, the working principle, the control mode and the spatial arrangement mode which can be involved are all conventional choices in the field, which should not be regarded as the innovation point of the invention, and it can be understood by those skilled in the art, and the patent of the invention is not further specifically described in detail.
Example 1:
as shown in fig. 1 to 11, a 3D printing apparatus for a metal powder-spread laser additive manufacturing SLM process includes a frame,
the middle part of the rack is provided with a printing base platform movable cavity for the printing base platform to move in, an operation space is arranged above the printing base platform movable cavity, the bottom of the operation space is an operation platform, the middle part of the operation platform is provided with a gap in the same direction as the extending direction of the printing base platform, the left side and the right side of the gap of the operation platform are respectively provided with a seam clamping piece, and the two seam clamping pieces form a seam in the same direction as the extending direction of the printing base platform;
a laser is arranged right above the crack, and a printing base station is arranged in the movable cavity of the printing base station and is positioned right below the crack;
one end of the printing base platform is connected with a driving device, and the driving device comprises a rotary driving mechanism and a lifting driving mechanism;
the powder spreading device is arranged on the operating platform, and a powder spreading roller of the powder spreading device is positioned on one side above the crack.
Example 2:
as shown in fig. 1 to 11, a 3D printing apparatus for a metal powder-spread laser additive manufacturing SLM process includes a frame,
the middle part of the rack is provided with a printing base platform movable cavity for the printing base platform to move in, an operation space is arranged above the printing base platform movable cavity, the bottom of the operation space is an operation platform, the middle part of the operation platform is provided with a gap in the same direction as the extending direction of the printing base platform, the left side and the right side of the gap of the operation platform are respectively provided with a seam clamping piece, and the two seam clamping pieces form a seam in the same direction as the extending direction of the printing base platform;
the movable cavity of the printing base station can be arranged according to the shape of the printing base station and the shape of a workpiece to be printed, and is preferably arranged into a cylindrical cavity;
the operation space is used for arranging structures such as a powder spreading device and a powder scraping device according to actual needs, and is also used as a manual operation space which can be a closed space or a closed space with an openable window (a vacuumizing device needs to be additionally arranged);
the operation table can be selected as a reference surface in practical application;
the crack sheet can be fixedly arranged or detachably arranged, preferably detachably arranged (convenient to adjust or replace) with adjustable crack width, and particularly, the arrangement mode and the structure can be selected according to actual needs;
as will be appreciated by those skilled in the art.
A laser is arranged right above the crack, and a printing base station is arranged in the movable cavity of the printing base station and is positioned right below the crack;
one end of the printing base platform is connected with a driving device, and the driving device comprises a rotary driving mechanism and a lifting driving mechanism;
the powder spreading device is arranged on the operating platform, and a powder spreading roller of the powder spreading device is positioned on one side above the crack.
And the powder paving roller and the printing base station rotate reversely to pave powder. The powder spreading device can be additionally provided with an X-axis driving device and/or a Y-axis driving device and the like according to requirements by a person skilled in the art, so that the powder spreading device can move to a corresponding position according to requirements.
Other functional structures can be added as required by those skilled in the art to realize other required functions based on the present invention.
The printing base station comprises a base station connecting part and a base station body; the base station connecting part plays a role in connection and fixation; the base station body extends in a long strip shape, and the circumferential surface of the base station body in the extending direction is a printing support surface;
the rotary driving mechanism is connected with the base station connecting part and is used for driving the printing base station to rotate;
the upper part of the lifting driving mechanism is connected with the rotary driving mechanism, and the lifting direction of the lifting driving mechanism is mutually vertical to the axial direction of a rotating rod of the rotary driving mechanism;
the rotary driving mechanism, please refer to fig. 7 to 10, comprising a bottom plate, wherein supporting legs are fixed at four corners of the top of the bottom plate, a supporting plate is arranged above the bottom plate, the tops of the supporting legs are fixedly connected with the bottom of the supporting plate, the top of the bottom plate is rotatably connected with a rotating rod through a bearing, the top end of the rotating rod penetrates through the top of the supporting plate and is fixedly provided with a first disc, the top end of the rotating rod is rotatably connected with the supporting plate through a bearing, a driven gear is sleeved and fixed on the surface of the rotating rod, a servo motor is fixed at the top of the bottom plate, an output shaft of the servo motor is fixed with a driving gear, the driving gear is meshed and connected with the driven gear, four upright posts are symmetrically fixed at the top of the first disc, a second disc is arranged above the first disc, the tops of the upright posts are fixedly connected with the bottom of the second disc, the both ends of two-way lead screw all rotate with a lateral wall of adjacent mounting panel respectively through the bearing to be connected, the one end of two-way lead screw runs through a lateral wall of adjacent mounting panel and is fixed with the knob, the below of two-way lead screw is provided with the horizontal pole, the both ends of horizontal pole respectively with a lateral wall fixed connection of adjacent mounting panel, the both ends lateral wall of two-way lead screw all has the riser through threaded connection, the equal sliding connection of riser is on the surface of horizontal pole, the bar opening has been seted up at the top of second disc, the bar opening all runs through on the top of riser, a lateral wall of riser all is fixed with the connecting rod, the one end of connecting.
In the embodiment, the support plate, the bidirectional screw rod, the knob, the cross rod, the vertical plate, the connecting rod and the arc plate are arranged, so that a long-strip-shaped (or called long-shaped) printing base station can be conveniently and quickly fixed on the second disc, and the second disc can be driven to rotate by arranging the support plate, the rotating rod, the first disc, the driven gear, the servo motor, the driving gear and the stand column, so that the printing base station can rotate, the requirements of processing symmetry and the like of some rotating parts are well met, and the quality of processed products is ensured; and is suitable for the printing requirement of the long strip (or long strip) printing base station.
Specifically, the extending direction of the printing base platform and the extending direction of the powder spreading roller are parallel to each other.
Referring to fig. 11, the lifting driving mechanism includes an L-shaped fixing plate, a hydraulic rod and a hydraulic cylinder which are sequentially arranged from top to bottom;
the horizontal part of the L-shaped fixing plate is connected with the upper end of the hydraulic rod, the vertical part of the L-shaped fixing plate is connected with the bottom plate of the rotary driving mechanism, and the extension direction of the arc-shaped plate is perpendicular to that of the hydraulic rod.
In this embodiment, the pneumatic cylinder during operation can drive hydraulic stem and L type fixed plate and reciprocate.
Specifically, four sliders are symmetrically fixed to the bottom of the first disc, an annular sliding groove is formed in the top of the supporting plate, and the four sliders are connected in the annular sliding groove in a sliding mode.
In this embodiment, the four sliding blocks are symmetrically fixed at the bottom of the first disk, and the annular sliding groove is formed at the top of the supporting plate, so that the first disk can stably rotate on the supporting plate.
Specifically, the two ends of the bidirectional screw rod are opposite in thread direction, threaded holes corresponding to threads at two ends of the bidirectional screw rod are formed in one side wall of each of the two vertical plates respectively, two ends of the bidirectional screw rod are connected with the threaded holes of the corresponding vertical plates respectively in a threaded mode, sliding holes are formed in one side wall of each vertical plate, and the cross rod penetrates through the sliding holes.
In this embodiment, set up respectively with the corresponding screw hole of two-way lead screw both ends screw thread for the lateral wall of two risers, be in order to cooperate with two-way lead screw, all seted up the slide opening through a lateral wall at the riser, be in order to make the horizontal pole can be smooth pass the riser to when two-way lead screw rotates, can drive two risers toward opposite direction motion.
Specifically, the surface of the knob is provided with anti-skid lines.
In this embodiment, set up anti-skidding line through the surface at the knob, can play better anti-skidding effect to be convenient for people to rotate the knob.
Specifically, the surfaces of the arc-shaped plates, which are far away from the connecting rod, are fixed with anti-skidding rubber pads.
In this embodiment, through the fixed surface anti-skidding rubber pad at the arc, can play better anti-skidding effect to can be fixed more firm with the printing base station.
When the rotary driving mechanism is used, the end part of the rotary driving mechanism is placed on a second disc for printing a base station (a base shaft, the periphery of the rotary driving mechanism is an annular printing base station), the arc-shaped plate and the anti-skidding rubber pad are located on the inner side of a base station connecting part of the printing base station, then the knob is rotated, the knob can drive the bidirectional screw rod to rotate, the bidirectional screw rod can drive the two vertical plates to move towards the outer side, so that the anti-skidding rubber pad can be driven to be tightly abutted against the inner wall of the base station connecting part, the printing base station can be fixed on the second disc, then the servo motor is started, the servo motor can drive the driving gear to rotate, the driving gear can drive the driven gear to rotate, and therefore the first disc can be driven to.
Specifically, the powder spreading device is connected with a metal powder processing system for SLM equipment, the metal powder processing system for SLM equipment comprises a powder cylinder and a powder feeding device, and the powder cylinder, the powder feeding device and the powder spreading device are sequentially communicated through a powder feeding pipe; as shown in fig. 12 to 21;
referring to fig. 13-19, the powder cylinder includes a first powder cylinder block, a second powder cylinder block and a third powder cylinder block, the first powder cylinder block includes a first wear layer, a strength layer and a second wear layer, an inner wall of the first wear layer is fixedly connected to a surface of the strength layer, an inner wall of the strength layer is fixedly connected to a surface of the second wear layer, a sealing plate is fixedly connected to one side of each of the first powder cylinder block and the third powder cylinder block, a sealing block is fixedly connected to one side of the sealing plate, sealing grooves are formed on two sides of the second powder cylinder block, a surface of the sealing plate is slidably connected to an inner wall of the sealing groove, a positioning rod is fixedly connected to an inner wall of the sealing groove, a positioning groove is formed in a surface of the positioning rod and a bottom of the sealing plate, a positioning groove is formed in an inner wall of the sealing groove, a thread groove is formed in an inner wall of the positioning groove, a lead screw, the surface of the screw rod is in threaded connection with the inner wall of the thread groove.
In this embodiment, through the rotation of lead screw, when the lead screw breaks away from the inner wall of thread groove, can take out this closing plate from the inner wall of seal groove, be for the convenience of being convenient for with the both sides split of first powder jar piece and third powder jar piece from second powder jar piece, make the inner wall of this powder jar add man-hour more convenient, use through first wearing layer and second wearing layer, can improve the wear resistance of this powder jar, the wearing and tearing of this powder jar inner wall have been reduced, make this equipment precision when printing higher.
Specifically, the two first wear-resistant layers and the second wear-resistant layer are both spray-coated layers, and the strength layer is a high-toughness composite mortar layer.
In this embodiment, make this powder jar have good wear resistance through the spraying layer, be in order to reduce the wearing and tearing of this powder jar inner wall, the hardness and the intensity of this powder jar have been strengthened to high tenacity composite mortar layer, and then have prolonged the life of this powder jar.
Specifically, the two first powder cylinder blocks and the third powder cylinder block are the same in shape and size and are respectively arranged on two sides of the second powder cylinder block.
In this embodiment, the powder jar is split into the first powder jar block, the second powder jar block and the third powder jar block, so that the inner wall of the powder jar is more convenient to process, the processing period can be shortened, and the processing cost is reduced.
Specifically, the diameter of the surface of the sealing plate is matched with that of the sealing groove, and the diameter of the surface of the sealing block is matched with that of the sealing groove.
In this embodiment, the sealing plate slides on the inner wall of the sealing groove, so as to facilitate the clamping connection between the second powder cylinder block and the first powder cylinder block and between the second powder cylinder block and the third powder cylinder block, and improve the sealing performance between the second powder cylinder block and the first powder cylinder block and between the second powder cylinder block and the third powder cylinder block.
Specifically, the locating hole has been seted up to the diapire of closing plate, the inner wall of locating hole and the surperficial sliding connection of locating lever.
In this embodiment, through the cooperation use between locating hole and the locating lever for this first powder jar piece, second powder jar piece and third powder jar piece are more convenient when assembling.
Specifically, a limiting hole is formed in the sealing block, and the inside of the limiting hole penetrates through the surface of the screw rod.
In this embodiment, the limiting hole is used for matching with the screw rod, so that the screw rod is convenient for limiting the thread groove, and the stability of assembly among the first powder cylinder block, the second powder cylinder block and the third powder cylinder block is improved.
The powder cylinder is used among the first wear-resistant layer, the strength layer and the second wear-resistant layer, so that the strength and the wear-resistant performance of the powder cylinder are enhanced, when the powder cylinder is used, the wear of the inner wall of the powder cylinder can be reduced, the printing precision of the equipment is improved, and meanwhile, the service life of the powder cylinder is prolonged.
When the powder cylinder is used, firstly, when the powder cylinder is disassembled, the screw rod is twisted to be separated from the inside of the thread groove, the screw rod can be taken out from the inside of the limiting hole, then the first powder cylinder block and the third powder cylinder block slide out from the inner wall of the sealing groove through the sealing plate, so that the first powder cylinder block and the third powder cylinder block can be respectively disassembled from two sides of the second powder cylinder block, the inner wall of the powder cylinder can be more conveniently machined, the powder cylinder can better meet the machining requirements of size precision, sealing property and the like, and the problem of serious abrasion of the inner wall of the powder cylinder can be prevented through the use of the first abrasion-resistant layer and the second abrasion-resistant layer so as to enhance the abrasion resistance of the powder cylinder, so that the printing precision of the equipment is improved.
The specific structure of the powder feeding device of the invention is shown in fig. 20 and 21, and the powder feeding device comprises a temporary storage box and a controller, wherein the temporary storage box is provided with a feeding pipe and a discharging pipe respectively, and the feeding pipe and the discharging pipe can be arranged on the end surface or the outer circular surface of the temporary storage box according to requirements, wherein the optimal arrangement is that the feeding pipe and the discharging pipe are arranged on the end surface simultaneously; the inlet end of the feeding pipe is hermetically connected with the powder storage device, and the outlet end of the discharging pipe is hermetically connected with the powder utilization device; the temporary storage box body is also provided with a transparent observation window, so that the working personnel can conveniently observe the condition in the temporary storage box at any time.
Meanwhile, a first one-way valve is fixedly arranged on the feeding pipe, and a second one-way valve is arranged on the discharging pipe, wherein the first one-way valve is in an open state towards one side of the temporary storage box, and the second one-way valve is in an open state towards one side of the powder using device;
the temporary storage box is movably provided with a sliding piston, the sliding piston comprises a metal valve core and a rubber sealing sleeve, the central position of the rear end face of the metal valve core is integrally provided with a connecting sleeve, the rubber sealing sleeve wraps the whole metal valve core, the connecting sleeve penetrates through the rubber sealing sleeve and is fixedly connected with a telescopic rod in a screw thread connection mode, and the other end of the telescopic rod is fixedly connected with an output shaft of a telescopic motor through a connector; the telescopic motor adopts an electric push rod to reduce the volume of the whole set of equipment; meanwhile, a plurality of annular sealing grooves are uniformly distributed on the outer circumference of the rubber sealing sleeve;
the temporary storage box body is also provided with a displacement sensor, the controller adopts a PLC (programmable logic controller), the displacement sensor adopts an infrared sensor, and the signal output end of the displacement sensor is connected with the signal input end of the PLC; meanwhile, the tail end of the temporary storage box is also provided with a travel switch, the travel switch is connected with a signal input end of the PLC, and a signal output end of the PLC is connected with the telescopic motor.
When powder needs to be fed, the sliding piston is driven to move outwards by the telescopic motor, negative pressure is formed in the temporary storage box, meanwhile, due to the arrangement of the opening directions of the first one-way valve and the second one-way valve, the first one-way valve is in an opening state, the second one-way valve is in a closing state, and at the moment, powder is pumped into the temporary storage box through the negative pressure; when the telescopic motor drives the sliding piston to move inwards, the first one-way valve is closed, the second one-way valve is opened, and at the moment, the powder in the temporary storage box is output through the feeding pipe; meanwhile, the sectional area of the temporary storage box is constant, so that the amount of the powder pumped in and extruded out can be accurately controlled by measuring the displacement length of the sliding piston, and the accurate conveying of the powder is realized.
Compared with the prior art, the powder conveying device has the advantages that the precise quantitative conveying of the powder is realized through a simple structure, the quantitative powder conveying to the 3D printer is greatly improved, the uniformity of the powder conveying is ensured, and the waste rate of raw materials is reduced; meanwhile, the invention has simple and reliable structure and greatly reduces the maintenance difficulty of the equipment.
According to the powder feeding device, the opening directions of the two one-way valves are ingeniously arranged, the powder is quantitatively extracted into the temporary storage box through the sliding piston and then is fed out in a split mode, quantitative powder feeding to the 3D printer is achieved through a simple structural design, the powder feeding uniformity is guaranteed, and the waste rate of raw materials is reduced; meanwhile, the invention has simple and reliable structure and greatly reduces the maintenance difficulty of the equipment.
According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the 3D printing device for the SLM process by using the metal powder-laying laser additive manufacturing method of the invention, and can produce the positive effects described in the invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a powder laser vibration material disk (SLM) 3D printing apparatus for technology is spread to metal which characterized in that: comprises a machine frame (3),
the middle part of the rack (3) is provided with a printing base station movable cavity (301) for the printing base station (2) to move in, an operation space (302) is arranged above the printing base station movable cavity (301), the bottom of the operation space (302) is an operation table (303), the middle part of the operation table (303) is provided with a gap (3031) which is the same as the extension direction of the printing base station (2), the operation table (303) is positioned at the left side and the right side of the gap (3031) and is respectively provided with a seam clamping sheet (6), and the two seam clamping sheets (6) form a seam which is the same as the extension direction of the printing base station (2);
a laser (4) is arranged right above the crack, and a printing base station (2) is arranged in the printing base station movable cavity (301) and right below the crack;
one end of the printing base platform (2) is connected with a driving device, and the driving device comprises a rotary driving mechanism (100) and a lifting driving mechanism (200);
and a powder spreading device is arranged on the operating platform (303), and a powder spreading roller (801) of the powder spreading device is positioned on one side above the crack.
2. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 1, wherein: the printing base (2) comprises a base connecting part (201) and a base body (202); the base station connecting part (201) plays a role in connecting and fixing; the base station body (202) extends in a long strip shape, and the circumferential surface of the base station body in the extending direction is a printing support surface (2021);
the rotary driving mechanism (100) is connected with the base station connecting part (201) and is used for driving the printing base station (2) to rotate;
the upper part of the lifting driving mechanism (200) is connected with the rotary driving mechanism (100), and the lifting direction of the lifting driving mechanism (200) is mutually vertical to the axial direction of a rotating rod (14) of the rotary driving mechanism (100);
the rotary driving mechanism (100) comprises a bottom plate (11), supporting legs (12) are fixed to four corners of the top of the bottom plate (11), a supporting plate (13) is arranged above the bottom plate (11), the tops of the supporting legs (12) are fixedly connected with the bottom of the supporting plate (13), a rotating rod (14) is rotatably connected to the top of the bottom plate (11) through a bearing, the top end of the rotating rod (14) penetrates through the top of the supporting plate (13) and is fixedly provided with a first disc (15), the top end of the rotating rod (14) is rotatably connected with the supporting plate (13) through a bearing, a driven gear (16) is fixedly arranged on the surface of the rotating rod (14), a servo motor (17) is fixed to the top of the bottom plate (11), a driving gear (18) is fixed to an output shaft of the servo motor (17), and the driving gear (18) is meshed with the driven gear (16), the top of the first disc (15) is symmetrically fixed with four upright posts (19), the second disc (110) is arranged above the first disc (15), the tops of the upright posts (19) are fixedly connected with the bottom of the second disc (110), the top of the first disc (15) is symmetrically fixed with support plates (111), a bidirectional screw rod (112) is arranged above the first disc (15), two ends of the bidirectional screw rod (112) are respectively and rotatably connected with one side wall of the adjacent support plate (111) through bearings, one end of the bidirectional screw rod (112) penetrates through one side wall of the adjacent support plate (111) and is fixed with a knob (113), a cross rod (114) is arranged below the bidirectional screw rod (112), two ends of the cross rod (114) are respectively and fixedly connected with one side wall of the adjacent support plate (111), two outer side walls of the bidirectional screw rod (112) are respectively and connected with a vertical plate (115) through threads, the equal sliding connection of riser (115) is on the surface of horizontal pole (114), bar opening (116) have been seted up at the top of second disc (110), bar opening (116) all are run through on the top of riser (115), a lateral wall of riser (115) all is fixed with connecting rod (117), the one end of connecting rod (117) all is fixed with arc (118).
3. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the extending direction of the printing base (2) is parallel to the extending direction of the powder spreading roller (801).
4. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the lifting driving mechanism (200) comprises an L-shaped fixing plate (211), a hydraulic rod (210) and a hydraulic cylinder (29) which are sequentially arranged from top to bottom;
the horizontal part (2111) of the L-shaped fixing plate (211) is connected with the upper end of the hydraulic rod (210), the vertical part (2112) is connected with the bottom plate (11) of the rotary driving mechanism (100), and the extension direction of the arc-shaped plate (118) is perpendicular to the extension direction of the hydraulic rod (210).
5. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the base station body (202) extends in a long strip shape, and the cross section of any position of the extension direction of the base station body is circular.
6. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the base body (202) extends in a cylindrical shape.
7. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the base connecting part (201) is in an original cylinder shape.
8. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: four sliding blocks (119) are symmetrically fixed to the bottom of the first disc (15), an annular sliding groove (120) is formed in the top of the supporting plate (13), and the four sliding blocks (119) are connected in the annular sliding groove (120) in a sliding mode.
9. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: two-way lead screw (112) both ends screw thread opposite direction, two screw hole (121) corresponding with two-way lead screw (112) both ends screw thread are seted up respectively to a lateral wall of riser (115), the both ends of two-way lead screw (112) respectively with screw hole (121) threaded connection of corresponding riser (115), slide opening (122) have all been seted up to a lateral wall of riser (115), horizontal pole (114) run through slide opening (122).
10. The 3D printing apparatus for metal-dusting laser additive manufacturing SLM process of claim 2, wherein: the surface of the knob (113) is provided with anti-skid lines;
and anti-skid rubber pads (123) are fixed on the surfaces of the arc-shaped plates (118) far away from the connecting rod (117).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011079783.9A CN112024884A (en) | 2020-10-10 | 2020-10-10 | 3D printing equipment for metal powder laying laser additive manufacturing SLM technology |
| PCT/CN2021/136255 WO2022073526A2 (en) | 2020-10-10 | 2021-12-08 | 3d printing device for additive-manufacturing slm process using metal powder and laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011079783.9A CN112024884A (en) | 2020-10-10 | 2020-10-10 | 3D printing equipment for metal powder laying laser additive manufacturing SLM technology |
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| WO (1) | WO2022073526A2 (en) |
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| WO2022073526A3 (en) * | 2020-10-10 | 2022-05-19 | 浙江意动科技股份有限公司 | 3d printing device for additive-manufacturing slm process using metal powder and laser |
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| CN215033619U (en) * | 2020-12-10 | 2021-12-07 | 浙江意动科技股份有限公司 | Basic shaft type metal 3D printer |
| CN214557421U (en) * | 2020-12-10 | 2021-11-02 | 浙江意动科技股份有限公司 | Base shaft type SLM metal printer |
| CN215033630U (en) * | 2020-12-10 | 2021-12-07 | 浙江意动科技股份有限公司 | Base shaft type metal 3D printer |
| CN112719300B (en) * | 2020-12-10 | 2022-08-30 | 嘉兴意动能源有限公司 | Base shaft type SLM metal printer |
| CN112589126A (en) * | 2020-12-10 | 2021-04-02 | 浙江意动科技股份有限公司 | Base shaft type metal 3D printer |
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- 2020-10-10 CN CN202011079783.9A patent/CN112024884A/en active Pending
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- 2021-12-08 WO PCT/CN2021/136255 patent/WO2022073526A2/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022073526A3 (en) * | 2020-10-10 | 2022-05-19 | 浙江意动科技股份有限公司 | 3d printing device for additive-manufacturing slm process using metal powder and laser |
| CN112589124A (en) * | 2020-12-10 | 2021-04-02 | 浙江意动科技股份有限公司 | Basic shaft type metal 3D printer |
| CN112589126A (en) * | 2020-12-10 | 2021-04-02 | 浙江意动科技股份有限公司 | Base shaft type metal 3D printer |
| CN112719305A (en) * | 2020-12-10 | 2021-04-30 | 浙江意动科技股份有限公司 | Base shaft type SLM metal printer |
| CN112719300A (en) * | 2020-12-10 | 2021-04-30 | 浙江意动科技股份有限公司 | Base shaft type SLM metal printer |
| CN112719300B (en) * | 2020-12-10 | 2022-08-30 | 嘉兴意动能源有限公司 | Base shaft type SLM metal printer |
| CN112589124B (en) * | 2020-12-10 | 2022-08-30 | 嘉兴意动能源有限公司 | Basic shaft type metal 3D printer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022073526A3 (en) | 2022-05-19 |
| WO2022073526A2 (en) | 2022-04-14 |
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