CN111822707B - Metal powder paving device for 3D double-laser metal printer - Google Patents
Metal powder paving device for 3D double-laser metal printer Download PDFInfo
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- CN111822707B CN111822707B CN202010696852.4A CN202010696852A CN111822707B CN 111822707 B CN111822707 B CN 111822707B CN 202010696852 A CN202010696852 A CN 202010696852A CN 111822707 B CN111822707 B CN 111822707B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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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
- B33Y10/00—Processes of additive manufacturing
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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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Abstract
The invention discloses a metal powder paving device for a 3D double-laser metal printer, which belongs to the technical field of metal powder paving of 3D double-laser metal printers, and comprises a material loading part, a horizontal moving part and a powder paving part, wherein the horizontal moving part is used for driving the material loading part to move back and forth, the powder paving part is used for paving metal powder, the material loading part is arranged on the horizontal moving part, and the powder paving part is arranged on the material loading part; according to the metal powder spreading device, the material loading part, the horizontal moving part for driving the material loading part to reciprocate and the powder spreading part for spreading metal powder are arranged, so that the problems that only one metal powder can be spread in the powder spreading process of the metal powder spreading device in the prior art and metal pieces printed by various metals cannot be produced can be solved, the application range of the metal powder spreading device is enlarged, and the applicability is improved.
Description
Technical Field
The invention relates to the technical field of metal powder paving of 3D double-laser metal printers, in particular to a metal powder paving device for a 3D double-laser metal printer.
Background
The 3D printer is a machine of an accumulation manufacturing technology, namely a rapid prototyping technology, and is a three-dimensional object manufactured by printing adhesive materials layer by layer on the basis of a digital model file and by using the adhesive materials such as special wax materials, powdered metal or plastic, wherein the 3D double-laser metal printer is a metal printer which takes double lasers as energy sources.
But the two laser metal printer of 3D who uses now need cooperate the powder device of stand to accomplish the printing of metal part at the printing in-process, the two laser metal printer during operation of 3D passes through the shaping of twin laser sintering with the metal powder on the workspace earlier, the fashioned slice work piece of sintering descends a station, the powder device of stand is with slice work piece top one deck metal powder of laying level afterwards, accomplish the sintering shaping of layer upon layer accumulation, present powder device during operation of stand, only push away the reservation metal powder of workspace to the workspace and push away the tie through the powder pole, can only carry out the laying level of a metal powder among the whole powder spreading process, can't satisfy the production and need the metal part that multiple metal printed and form, make the application range of the two laser metal printer of 3D narrower, the suitability step-down.
Based on the metal powder paving device, the metal powder paving device for the 3D double-laser metal printer is designed to solve the problem that the powder paving device for the 3D double-laser metal printer can only pave one metal powder and cannot meet the requirement of producing metal pieces printed by multiple metals.
Disclosure of Invention
The invention aims to provide a metal powder paving device for a 3D double-laser metal printer, and aims to solve the problems that when the powder paving device works, only a powder paving rod is used for pushing reserved metal powder in a working area to the working area to be leveled, only one metal powder can be paved in the whole powder paving process, metal pieces printed by various metals cannot be produced, and the 3D double-laser metal printer is narrow in application range and low in applicability.
In order to achieve the purpose, the invention provides the following technical scheme: a metal powder paving device for a 3D double-laser metal printer comprises a material loading part, a horizontal moving part and a powder paving part, wherein the horizontal moving part is used for driving the material loading part to move back and forth, the powder paving part is used for paving metal powder, the material loading part is installed on the horizontal moving part, and the powder paving part is installed on the material loading part;
the horizontal moving part comprises a right frame and a left mounting plate, the right frame and the left mounting plate are respectively and fixedly mounted on the inner walls of two sides of an inner cavity of the 3D double-laser metal printer, the top of the right frame and the left mounting plate are jointly connected with a horizontally arranged guide connecting rod, two sides of the bottom of the right frame are respectively and fixedly connected with a horizontally arranged guide rail, the end parts of the two guide rails, far away from the right frame, are jointly connected with a baffle plate, the top of the right frame and the left mounting plate are jointly and rotatably connected with a first lead screw, the end part of the first lead screw is fixedly connected with a first gear, the first gear is meshed with a second gear, and a first servo motor with an output shaft;
the material carrying part comprises a horizontal moving plate, the horizontal moving plate is connected to the surfaces of two guide connecting rods in a sliding manner, the middle part of the horizontal moving plate is in threaded connection with the surface of a first screw rod, a motor mounting frame is arranged below the horizontal moving plate, a screw rod transmission mechanism for driving the horizontal moving plate to reciprocate back and forth is connected between the motor mounting frame and the horizontal moving plate, a second servo motor is fixedly mounted on the motor mounting frame, an output shaft of the second servo motor is rotatably connected with the bottom of the motor mounting frame through a bearing, a material containing plate is connected with the output shaft of the second servo motor through a connecting rod, the material containing plate is designed to be square, extruding surfaces are arranged on four sides of the material containing plate, material containing ports arranged on the top surface of the material containing plate are arranged on one side of each extruding surface, and a circular table type material guide funnel is fixedly connected, each round platform type guide funnel is provided with a material leaking through hole in the middle of the bottom surface, the material leaking through hole is covered with a material baffle plate, the surface of the material baffle plate is fixedly connected with a discharging rod, the discharging rod penetrates through the round platform type guide funnel, the discharging rod is assembled with the round platform type guide funnel in a sliding manner, the discharging rod is sleeved with a first reset spring with the left end fixed with the discharging rod, the end part of the discharging rod is connected with a trapezoidal rod positioned outside a pushing surface, the two sides of the trapezoidal rod are respectively provided with a connecting plate fixed on the pushing surface, each connecting plate is provided with a limiting bayonet, the front top of each connecting plate is respectively fixed with a first inclined plane top block, a butt joint plate which is vertically arranged is arranged between the first inclined plane top blocks, the side of the butt joint plate close to the connecting plate is provided with a butt joint groove butted with the trapezoidal rod, one side of the butt joint groove is provided with a moving strip fixedly connected with the butt joint plate, a reverse J-shaped buckle plate which is assembled with the side surface of the butt joint plate in a sliding mode is arranged on one side of the movable strip, and the bottom of the buckle plate is fixedly connected with a first air spring which is fixedly connected with the side surface of the butt joint plate;
when the device works, different metal powder required in the printing process is firstly contained in a circular table type material guide hopper on a material containing plate, then the 3D double-laser metal printer is started, the device starts to work under the control of an external controller, a horizontal moving part starts to act firstly, a first servo motor can drive a horizontal moving plate to slowly move towards the left side through a second gear, a first gear and a first lead screw, at the moment, a motor mounting frame, a second servo motor and the material containing plate all slowly move towards the left side along with the horizontal moving plate, when the material containing plate moves to the butt joint plate, the trapezoidal rod can be in butt joint with the butt joint groove, and the butt joint groove can extrude the trapezoidal rod, in the extrusion process, the butt joint plate keeps unchanged in position under the action of friction force of the moving strip and the horizontal moving part, the material containing plate continuously moves leftwards, the discharge rod keeps unchanged in position due to the blocking effect of the butt joint groove on the butt joint plate before the connecting plate on the material containing plate does not touch the butt joint plate, the baffle plate on the discharge rod also keeps unchanged in position, the discharge rod gradually sinks into the material containing port, but the material leaking through hole on the bottom surface of the circular table type material guide funnel moves along with the material containing plate, so that the material leaking through hole and the baffle plate are staggered, the material leaking through hole and the baffle plate are staggered completely when the discharge rod sinks into the material containing port completely, the protruding part at the bottom of the pinch plate moves into the limiting clamping port, the material containing plate directly pushes the trapezoidal rod to force the butt joint plate to move when the material containing plate continuously moves leftwards, and the pinch plate on the butt joint plate moves along with the pinch plate, when the top of the pinch plate is separated from the baffle plate, the first gas spring at the bottom of the pinch plate pushes the pinch plate to move upwards, the protruding part at the bottom of the pinch plate moves upwards to be locked with the limiting bayonet, the screw rod transmission mechanism is started after the locking is finished, the motor mounting frame is enabled to move back and forth regularly, so that the material containing plate is enabled to move back and forth, the material containing plate can push the butt plate to move back and forth regularly through the connecting plate, the circular table type material guide funnel can move left slowly in the process of left material leakage and can move back and forth quickly in a direction perpendicular to the moving direction, the metal powder can be spread and covered on all working areas of printing, the spread metal powder can be evenly spread on the working areas through the powder spreading part, and when the horizontal movement is to the leftmost side, the first servo motor drives the first screw rod to rotate reversely, the horizontal moving plate can move rightwards, the material containing plate can drive the butt-joint plates to move rightwards together through the buckling action of the buckling plate and the limiting bayonet, the ladder-shaped rod, the discharging rod and the material baffle plate keep unchanged in position due to the buckling action of the buckling plate and the limiting bayonet, the material leaking through hole and the material baffle plate are still in a staggered state, so that the circular table type material guide funnel can slowly move rightwards in the process of moving rightwards to leak materials and simultaneously has quick reciprocating motion vertical to the moving direction, the metal powder can be spread and covered on all working areas for printing again, the spread metal powder can be uniformly spread on the working areas again through the action of the powder spreading part, the spreading effect can be better in the two spreading processes, when the material containing plate moves to the baffle plate, the inclined plane at the top of the buckling plate is in contact with the baffle plate, the buckling plate can move rightwards continuously along with the material containing plate and can move downwards through the extrusion of the baffle plate, when the baffle plate is propped against the top end of the pinch plate, the protruding part on the pinch plate is completely separated from the concave part of the limiting bayonet, when the material containing plate continues to move rightwards, the butt joint plate can not move along with the material containing plate, when the pinch plate is completely moved out of the limiting bayonet, the material containing plate is separated from the butt joint plate, the discharging rod is restored to the initial state under the action of the first reset spring, the material leakage through hole is sealed by the material baffle plate again, the material is prevented from falling after the paving is finished, if the next printing needs to use the metal powder of another type, only need to rotate through controlling second servo motor and make flourishing flitch switch the position, just can accomplish the switching of metal powder type, repeat above-mentioned process, just can accomplish the even of another kind of metal powder and pave, solved among the prior art metal powder paving device's the powder process can only carry out the paving of a metal powder, can't satisfy the problem that the multiple metal of production needs printed the metalwork that forms.
As a further scheme of the invention, the powder spreading part comprises a connecting steel bar fixedly connected with the bottom surface of the horizontal moving plate, the connecting steel bar is vertically arranged, the bottom of the connecting steel bar is fixedly connected with a horizontally arranged mounting strip plate, and the mounting strip plate is fixedly connected with a horizontally arranged powder spreading rod; when the powder spreading device works, the powder spreading rod is fixed on the horizontal moving plate through the connecting steel bars and the mounting battens, so that leaked metal powder of the round-platform-shaped guide hopper can be conveniently and timely spread.
As a further scheme of the invention, an automatic control mechanism is arranged on the discharging rod, the automatic control mechanism comprises a second air spring which penetrates through the material containing plate and is in sliding assembly with the material containing plate, the bottom end of the second air spring is fixedly connected with the trapezoidal rod, the top end of the second air spring is fixedly connected with the discharging rod, the top end of the rod part of the second air spring containing rod is fixedly connected with a second inclined plane ejector block, the top end of the rod part of the second air spring moving rod is fixedly connected with an arc-shaped stop block, one side of the arc-shaped stop block is provided with a double-inclined-plane moving stop block, the bottom surface of the double-inclined-plane moving stop block is fixedly connected with a sliding column in sliding assembly with the material containing plate, and a second reset; when the second air spring contracts to a certain position, the second inclined plane top block on the second air spring acts on the top of the double inclined plane moving stop block, the second reset spring contracts, and the double inclined plane moving stop block moves downwards, so that the double inclined plane moving stop block is separated from the arc-shaped stop block, the elastic force of the second air spring is released and further quickly extends, the baffle plate is quickly separated from the top of the leakage through hole, and the purpose of quickly staggering the leakage through hole and the baffle plate is achieved, make whole blanking process all very even, when flourishing flitch breaks away from with the butt plate, the second air spring loses the extrusion force, and first reset spring can reset the discharge arm, and the second air spring also can reset simultaneously, and under first reset spring and second air spring effect, the arc dog can cross double inclined plane and remove the dog and resume to initial position, and the initial stage of having solved the hourglass material is less from the metal powder that spills in the hourglass material through-hole, probably causes the inhomogeneous problem of paves.
As a further scheme of the invention, the screw rod transmission mechanism comprises a guide groove arranged at the bottom of the horizontal moving plate, the guide groove is assembled with the motor mounting frame in a sliding manner, a second screw rod is assembled in the guide groove in a rotating manner, a second servo motor fixedly connected with the top surface of the horizontal moving plate is arranged above the second screw rod, the second screw rod penetrates through the top of the motor mounting frame and is assembled with the motor mounting frame in a threaded manner, one end of the second screw rod is fixedly connected with a first gear, the first gear is meshed with a second gear, and the second gear and the first gear are connected with a chain together; during operation, the second servo motor drives the first gear to regularly rotate forwards and reversely, and the second screw rod can regularly rotate forwards and reversely through the chain and the second gear, so that the motor mounting frame can regularly move back and forth.
As a further scheme of the invention, a positioning mechanism is arranged on the butt plate, the positioning mechanism comprises a second gas spring arranged above the first gas spring, the second gas spring is fixedly connected with the side surface of the butt plate, the top end of the second gas spring is fixedly connected with a positioning strip, the side surface of the positioning strip is provided with a butt joint port for butt joint with the first inclined plane top block, the positioning strip penetrates through a limiting through hole arranged on the moving strip, and the top end of the positioning strip is clamped with the bottom surface of the baffle plate; when the automatic locking device works, in order to ensure that the pinch plate and the limiting bayonet can complete locking, the friction between the moving strip and the guide rail is required to be enough, the friction between the moving strip and the guide rail can cause large abrasion between the moving strip and the guide rail, the power of the first servo motor also needs to be larger, and more energy consumption is caused during working, the second air spring is arranged above the first air spring, when the pinch plate and the limiting bayonet are not completely butted, the second air spring pushes the positioning strip to penetrate through the limiting through hole to be spliced with the baffle plate, the baffle plate is matched with the positioning strip to provide resistance for the pinch plate and the limiting bayonet to complete locking, when the pinch plate completely extends into the limiting bayonet, the first inclined plane top block is butted with the butt joint hole, the positioning strip is also separated from the baffle plate, the resistance is eliminated, the design does not need to ensure that the friction between the moving strip and the guide rail is enough, and the friction between the moving strip and, the problems that the abrasion between the moving strip and the guide rail is large and the energy consumption of the first servo motor is high when the first servo motor works are avoided.
As a further scheme of the invention, the ladder-shaped rod is fixedly connected with a horizontally arranged thin guide rod, the thin guide rod penetrates through the material containing plate and the round platform type material guide funnel, the thin guide rod, the material containing plate and the round platform type material guide funnel are assembled in a sliding mode, and the ladder-shaped rod can move relatively more stably by the design of the thin guide rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the metal powder spreading device, the material loading part, the horizontal moving part for driving the material loading part to reciprocate and the powder spreading part for spreading metal powder are arranged, so that the problems that only one metal powder can be spread in the powder spreading process of the metal powder spreading device in the prior art and metal pieces printed by various metals cannot be produced can be solved, the application range of the metal powder spreading device is enlarged, and the applicability is improved;
2. according to the invention, the automatic control mechanism is arranged on the discharging rod, so that the problem that less metal powder is leaked from the material leakage through hole at the initial stage of material leakage, and the uneven spreading is possibly caused can be solved;
3. according to the invention, the positioning mechanism is arranged on the butt joint plate, so that the problems that the abrasion between the moving strip and the guide rail is large due to overlarge friction between the moving strip and the guide rail, and the energy consumption of the first servo motor is more during working are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure A in FIG. 1;
FIG. 3 is a schematic view of the loading portion of the present invention;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is an enlarged view at E in FIG. 4;
FIG. 6 is a partially sectioned plan view of a material holding plate according to the present invention;
FIG. 7 is a schematic partial sectional structure view of a material holding plate according to the present invention;
FIG. 8 is an enlarged view at C of FIG. 7;
fig. 9 is an enlarged view at D in fig. 8.
In the drawings, the components represented by the respective reference numerals are listed below:
the material spreading machine comprises a right frame 100, a left mounting plate 101, a guide connecting rod 102, a guide rail 103, a baffle plate 104, a first lead screw 105, a first gear 106, a second gear 107, a first servo motor 108, a horizontal moving plate 200, a motor mounting frame 201, a second servo motor 202, a material containing plate 203, a pushing surface 204, a material containing opening 205, a circular truncated cone type material guide funnel 206, a material leakage through hole 207, a material baffle plate 208, a discharging rod 209, a trapezoidal rod 210, a connecting plate 211, a first inclined plane top block 213, a butt joint plate 214, a butt joint groove 215, a moving strip 216, a buckle plate 217, a first air spring 218, a second air spring 219, a positioning strip 220, a butt joint 221, a limiting through hole 222, a guide thin rod 223, a first reset spring 224, a connecting steel rod 300, a mounting strip plate 301, a powder spreading rod 302, a third air spring 400, a second inclined plane top block 401, an arc-shaped block 402, a double-inclined plane moving block 403, a sliding columns 404, a second reset, A second screw 501, a third servo motor 502, a third gear 503, a fourth gear 504 and a chain 505.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution: a metal powder paving device for a 3D double-laser metal printer comprises a material loading part, a horizontal moving part and a powder paving part, wherein the horizontal moving part is used for driving the material loading part to move back and forth, the powder paving part is used for paving metal powder, the material loading part is installed on the horizontal moving part, and the powder paving part is installed on the material loading part;
the horizontal moving part comprises a right frame 100 and a left mounting plate 101, the right frame 100 and the left mounting plate 101 are respectively and fixedly mounted on the inner walls of two sides of an inner cavity of the 3D double-laser metal printer, the top of the right frame 100 and the left mounting plate 101 are jointly connected with a horizontally arranged guide connecting rod 102, two sides of the bottom of the right frame 100 are respectively and fixedly connected with a horizontally arranged guide rail 103, the end parts, far away from the right frame 100, of the two guide rails 103 are jointly connected with a baffle plate 104, the top of the right frame 100 and the left mounting plate 101 are jointly and rotatably connected with a first screw rod 105, the end part of the first screw rod 105 is fixedly connected with a first gear 106, the first gear 106 is meshed with a second gear 107, and the second gear;
the material loading part comprises a horizontal moving plate 200, the horizontal moving plate 200 is connected on the surfaces of two guide connecting rods in a sliding manner, the middle part of the horizontal moving plate 200 is in threaded connection with the surface of a first screw rod 105, a motor mounting frame 201 is arranged below the horizontal moving plate 200, a screw rod transmission mechanism for driving the horizontal moving plate 200 to reciprocate back and forth is connected between the motor mounting frame 201 and the horizontal moving plate 200, a second servo motor 202 is fixedly mounted on the motor mounting frame 201, the output shaft of the second servo motor 202 is rotatably connected with the bottom of the motor mounting frame 201 through a bearing, the output shaft of the second servo motor 202 is connected with a material containing plate 203 through a connecting rod, the material containing plate 203 is designed into a square shape, pushing surfaces 204 are respectively arranged on four sides of the material containing plate 203, material containing holes 205 arranged on the top surface of the material containing plate 203 are respectively arranged on one side of each pushing surface 204, the middle part of the bottom surface of each circular table type material guide funnel 206 is provided with a material leakage through hole 207 positioned on the material containing plate 203, the top surface of each material leakage through hole 207 is covered with a material baffle plate 208, the surface of the material baffle plate 208 is fixedly connected with a discharging rod 209, the discharging rod 209 penetrates through the circular table type material guide funnel 206, the discharging rod 209 is assembled with the circular table type material guide funnel 206 in a sliding way, the discharging rod 209 is sleeved with a first reset spring 224 fixed with the discharging rod at the left end, the end part of the discharging rod 209 is connected with a trapezoidal rod 210 positioned at the outer side of the pushing surface 204, two sides of the trapezoidal rod 210 are respectively provided with a connecting plate 211 fixed on the pushing surface 204, each connecting plate 211 is provided with a limit bayonet 212, the top of the front surface of each connecting plate 211 is respectively fixed with a first inclined plane top block 213, a butt joint plate 214 vertically arranged between the first inclined plane top blocks 213, the butt joint plate 214 is provided with a butt joint groove, a movable strip 216 fixedly connected with the butt joint plate 214 is arranged on one side of the butt joint groove 215, a buckling plate 217 which is in a reverse J shape and is in sliding assembly with the side surface of the butt joint plate 214 is arranged on one side of the movable strip 216, and a first air spring 218 fixedly connected with the side surface of the butt joint plate 214 is fixedly connected to the bottom of the buckling plate 217;
when the device works, different metal powder required in the printing process is firstly contained in a circular table type material guide funnel 206 on a material containing plate 203, then the 3D double-laser metal printer is started, at the moment, the device starts to work under the control of an external controller, a horizontal moving part firstly starts to act, a first servo motor 108 can drive a horizontal moving plate 200 to slowly move towards the left side through a second gear 107, a first gear 106 and a first screw rod 105, at the moment, a motor mounting frame 201, a second servo motor 202 and the material containing plate 203 all move towards the left side slowly along with the horizontal moving plate 200, and when the material containing plate 203 moves to a butt joint plate 214, a trapezoidal rod 210 can be in butt joint with a butt joint groove 215, the butt joint groove 215 can extrude the trapezoidal rod 210, in the extrusion process, the butt joint plate 214 keeps unchanged in position under the action of friction force of the moving strip 216 and the horizontal moving part, the material containing plate 203 continues to move leftwards, before the connecting plate 211 on the butt joint plate keeps away from the butt joint plate 214, the discharge rod 209 keeps unchanged in position under the blocking action of the butt joint groove 215 on the butt joint plate 214, the material baffle plate 208 on the discharge rod 209 also keeps unchanged in position, the discharge rod 209 gradually sinks into the material containing opening 205, but the material leaking through hole 207 on the bottom surface of the circular table type material guide funnel 206 can move along with the material containing plate 203, so that the material leaking through hole 207 and the material baffle plate 208 are staggered, the material leaking through hole 207 starts to discharge materials, when the discharge rod 209 completely sinks into the material containing opening 205, the material leaking through hole 207 and the material baffle plate 208 are completely staggered, the protruding part at the bottom of the buckle plate 217 moves into the limiting bayonet 212, and when the material containing plate 203 continues to, the material containing plate 203 can directly push the trapezoidal rod 210 to force the butt joint plate 214 to move, when the butt joint plate 214 moves, the buckle plate 217 on the material containing plate moves along with the motion, when the top of the buckle plate 217 is separated from the baffle 104, the first air spring 218 at the bottom of the buckle plate 217 can push the buckle plate 217 to move upwards, the bottom protruding part of the buckle plate 217 also moves upwards to be locked with the limiting bayonet 212, after the locking is completed, the screw rod transmission mechanism is started, the screw rod transmission mechanism enables the motor mounting frame 201 to obtain regular back-and-forth motion, so that the material containing plate 203 also obtains regular back-and-forth motion, the material containing plate 203 can push the butt joint plate 214 to also do regular back-and-forth motion through the connecting plate 211, and therefore, the circular table type material guide funnel 206 can slowly move leftwards in the process of left leakage and simultaneously has quick back-and forth motion perpendicular to the moving direction, so that the spreading of metal powder can, the spread metal powder can be uniformly spread on a working area under the action of the powder spreading part, when the horizontal moving plate 200 moves to the leftmost side, the first servo motor 108 drives the first screw rod 105 to rotate reversely, the horizontal moving plate 200 moves rightwards, the material containing plate 203 drives the butt-joint plate 214 to move rightwards together through the buckling action of the buckle plate 217 and the limiting bayonet 212, the trapezoidal rod 210, the discharge rod 209 and the material baffle plate 208 keep unchanged in position due to the buckling action of the buckle plate 217 and the limiting bayonet 212, the material leakage through hole 207 and the material baffle plate 208 are still in a staggered state, so that the circular table type material guide funnel 206 can slowly move rightwards in the process of moving rightwards and leaking materials and simultaneously has quick reciprocating motion vertical to the moving direction, the spread metal powder can be covered on the printed working area again, the spread metal powder can be uniformly spread on the working area again under the action of the powder spreading part, the two flattening processes can ensure better flattening effect, when the material containing plate 203 moves to the position of the baffle 104, the inclined surface at the top of the buckle plate 217 is contacted with the baffle 104, the buckle plate 217 can continuously move rightwards along with the material containing plate 203 by the extrusion of the baffle 104 and also move downwards, when the baffle 104 props against the top end of the buckle plate 217, the protruding part on the buckle plate 217 is completely separated from the concave part of the limit bayonet 212, when the material containing plate 203 continuously moves rightwards, the butt joint plate 214 can not move along with the material containing plate 203, when the buckle plate 217 is completely moved out of the limit bayonet 212, the material containing plate 203 is completely separated from the butt joint plate 214, the discharging rod 209 is restored to the initial state under the action of the first reset spring 224, the material blocking plate 208 seals the material leaking through hole 207 again to prevent the material from being discharged after the material is finished, if another type of metal powder is required to be used for the next printing, the material containing plate 203 is switched over by controlling the, the metal powder type switching can be completed, the process is repeated, the uniform spreading of another metal powder can be completed, the problem that only one metal powder can be spread in the powder spreading process of a metal powder spreading device in the prior art, the production of metal parts formed by printing multiple metals cannot be met is solved, the application range of the metal powder spreading device is enlarged, and the applicability is improved.
As a further scheme of the invention, the powder spreading part comprises a connecting steel bar 300 fixedly connected with the bottom surface of the horizontal moving plate 200, the connecting steel bar 300 is vertically arranged, the bottom of the connecting steel bar 300 is fixedly connected with a horizontally arranged mounting bar plate 301, and the horizontally arranged powder spreading rod 302 is fixedly connected with the mounting bar plate 301; when the powder spreading device works, the powder spreading rod 302 is fixed on the horizontal moving plate 200 through the connecting steel bar 300 and the installation strip plate 301, so that metal powder leaked from the circular-table-type material guide hopper 206 can be conveniently and timely spread.
As a further scheme of the invention, the discharging rod 209 is provided with a self-control mechanism, the self-control mechanism comprises a third gas spring 400 which penetrates through the material containing plate 203 and is in sliding assembly with the material containing plate, the bottom end of the third gas spring 400 is fixedly connected with the trapezoidal rod 210, the top end of the third gas spring 400 is fixedly connected with the discharging rod 209, the top end of a containing rod part of the third gas spring 400 is fixedly connected with a second inclined plane top block 401, the top end of a moving rod part of the third gas spring 400 is fixedly connected with an arc-shaped stop block 402, one side of the arc-shaped stop block 402 is provided with a double inclined plane moving stop block 403, the bottom surface of the double inclined plane moving stop block 403 is fixedly connected with a sliding column 404 in sliding assembly with the material containing plate 203, and the sliding column; when the material leaking through hole 207 and the material blocking plate 208 are gradually staggered, so that less metal powder leaks from the material leaking through hole 207 in the initial stage of material leaking, and uneven paving is likely to be caused, by arranging the automatic control mechanism, when the material containing plate 203 extrudes the trapezoidal rod 210, the extrusion force acts on the third gas spring 400, the arc-shaped stop block 402 on the third gas spring 400 is stopped by the double-inclined-plane moving stop block 403, so that the third gas spring 400 contracts to generate elastic force, when the third gas spring 400 contracts to a certain position, the second inclined-plane top block 401 on the third gas spring acts on the top of the double-inclined-plane moving stop block 403, the second reset spring 405 contracts, the double-inclined-plane moving stop block 403 moves downwards, so that the double-inclined-plane moving stop block 403 is separated from the arc-shaped stop block 402, the elastic force of the third gas spring 400 is released to extend rapidly, and the material blocking plate 208 rapidly leaves from the top, reached hourglass material through-hole 207 and striker plate 208 purpose of staggering fast, it is all very even to make whole blanking process, when flourishing flitch 203 breaks away from with butt plate 214, third air spring 400 loses the extrusion force, first reset spring 224 can reset stripper rod 209, third air spring 400 also can reset simultaneously, under first reset spring 224 and third air spring 400 effect, arc dog 402 can cross double inclined plane and remove dog 403 and resume to initial position, the initial stage of having solved leaking the material is less from the metal powder that leaks in the hourglass material through-hole 207, probably cause the inhomogeneous problem of paving.
As a further scheme of the present invention, the lead screw transmission mechanism includes a guide groove 500 disposed at the bottom of the horizontal moving plate 200, the guide groove 500 is slidably assembled with the motor mounting bracket 201, and the guide groove 500 is rotatably assembled with a second lead screw 501, a third servo motor 502 fixedly connected with the top surface of the horizontal moving plate 200 is disposed above the second lead screw 501, the second lead screw 501 penetrates through the top of the motor mounting bracket 201 and is assembled with the motor mounting bracket in a threaded manner, one end of the second lead screw 501 is fixedly connected with a third gear 503, the third gear 503 is engaged with a fourth gear 504, and the fourth gear 504 and the third gear 503 are jointly connected with a chain 505; during operation, the third servo motor 502 drives the third gear 503 to rotate regularly in the forward and reverse directions, and then the chain 505 and the fourth gear 504 enable the second screw rod 501 to rotate regularly in the forward and reverse directions, so that the motor mounting rack 201 can move regularly in a reciprocating manner.
As a further scheme of the present invention, a positioning mechanism is disposed on the docking plate 214, the positioning mechanism includes a second gas spring 219 disposed above the first gas spring 218, the second gas spring 219 is fixedly connected to a side surface of the docking plate 214, and a positioning strip 220 is fixedly connected to a top end of the second gas spring 219, a docking port 221 for docking with the first inclined plane top block 213 is disposed on a side surface of the positioning strip 220, and the positioning strip 220 passes through a limiting port 222 disposed on the moving strip 216, and a top end of the positioning strip 220 is engaged with a bottom surface of the baffle 104; when the locking device works, in order to ensure that the buckling plate 217 and the limiting bayonet 212 can be locked, the friction between the moving strip 216 and the guide rail 103 is large enough, the friction between the moving strip 216 and the guide rail 103 is large, the abrasion between the moving strip 216 and the guide rail 103 is large, the power of the first servo motor 108 is also required to be large, and the energy consumption during working is large, the second gas spring 219 is arranged above the first gas spring 218, when the buckling plate 217 and the limiting bayonet 212 are not butted, the second gas spring 219 pushes the positioning strip 220 to penetrate through the limiting through hole 222 to be inserted into the baffle 104, the baffle 104 is matched with the positioning strip 220 to provide resistance for the buckling plate 217 and the limiting bayonet 212 to be locked, when the buckling plate 217 is completely inserted into the limiting bayonet 212, the first inclined plane top block 213 is butted with the butting hole 221, the positioning strip 220 is also separated from the baffle 104, the resistance is eliminated, and the design does not need to ensure that the friction between the moving strip 216 and the, the friction force between the moving strip 216 and the guide rail 103 can be eliminated as much as possible during design, so that the problems that the wear between the moving strip 216 and the guide rail 103 is large and the energy consumption of the first servo motor 108 is high due to the fact that the friction between the moving strip 216 and the guide rail 103 is too large are solved.
As a further scheme of the invention, the ladder-shaped rod 210 is fixedly connected with a horizontally arranged thin guide rod 223, the thin guide rod 223 penetrates through the material containing plate 203 and the round platform type material guide funnel 206, and the thin guide rod 223 is assembled with the material containing plate 203 and the round platform type material guide funnel 206 in a sliding manner, so that the ladder-shaped rod 210 can move more stably relative to each other by designing the thin guide rod 223.
The working principle is as follows: when the device works, different metal powder required in the printing process is contained in the circular table type material guide hopper 206 on the material containing plate 203, then the 3D double-laser metal printer is started, at the moment, the device starts to work under the control of an external controller, the horizontal moving part starts to act firstly, the first servo motor 108 can drive the horizontal moving plate 200 to move slowly towards the left side through the second gear 107, the first gear 106 and the first screw rod 105, at the moment, the motor mounting frame 201, the second servo motor 202 and the material containing plate 203 all move slowly towards the left side along with the horizontal moving plate 200, when the material containing plate 203 moves to the butt joint plate 214, the trapezoidal rod 210 can be in butt joint with the butt joint groove 215, the butt joint groove 215 can extrude the trapezoidal rod 210, the butt joint plate 214 keeps the position unchanged under the friction force of the moving strip 216 and the horizontal moving part in the extrusion process, the material containing plate 203 continues to move leftwards, before the connecting plate 211 on the connecting plate is not contacted with the butt joint plate 214, the position of the discharging rod 209 can be kept unchanged due to the blocking effect of the butt joint groove 215 on the butt joint plate 214, the position of the material baffle plate 208 on the discharging rod 209 can also be kept unchanged, the discharging rod 209 can gradually sink into the material containing opening 205, but the material leaking through hole 207 on the bottom surface of the circular table type material guide funnel 206 can move along with the material containing plate 203, so that the material leaking through hole 207 and the material baffle plate 208 are staggered, the material leaking through hole 207 and the material baffle plate 208 are completely staggered, the protruding part at the bottom of the buckle plate 217 moves into the limiting bayonet 212, when the material containing plate 203 continues to move leftwards, the material containing plate 203 can directly push the trapezoidal rod 210 to force the butt joint plate 214 to move, when the butt joint plate 214 moves, the buckle plate 217 on the buckle plate 217 moves along with the buckle plate 217, when the top 217 is separated from the baffle plate 104, the first gas spring 218 at the bottom of the buckle plate 217 can push the buckle plate 217, the pinch plate 217 moves upwards, the protruding part at the bottom of the pinch plate can also move upwards to be locked with the limiting bayonet 212, the screw rod transmission mechanism is started after the locking is finished, the screw rod transmission mechanism enables the motor mounting frame 201 to obtain regular back-and-forth motion, so that the material containing plate 203 also obtains regular back-and-forth motion, the material containing plate 203 can push the butt joint plate 214 to also make regular back-and-forth motion through the connecting plate 211, so that the circular table type material guide funnel 206 can slowly move leftwards in the process of left material leakage and simultaneously has quick back-and-forth motion perpendicular to the moving direction, the metal powder can be spread and covered on a printed working area, the spread metal powder can be uniformly spread and flattened on the working area through the effect of the powder spreading part, when the horizontal moving plate 200 moves to the leftmost side, the first servo motor 108 drives the first screw rod 105 to reversely rotate, and the horizontal moving plate 200 can move rightwards, the material containing plate 203 keeps the positions of the trapezoidal rod 210, the discharging rod 209 and the material baffle plate 208 unchanged through the buckling action of the buckling plate 217 and the limiting bayonet 212, the material leaking through hole 207 and the material baffle plate 208 are still in a staggered state, so that the circular table type material guiding funnel 206 slowly moves rightwards in the process of moving rightwards to leak materials and has quick reciprocating motion vertical to the moving direction, the spreading area of metal powder can be covered on a printed working area again, the spread metal powder can be uniformly spread on the working area again through the action of the powder spreading part, the spreading effect can be better ensured in the process of spreading twice, when the material containing plate 203 moves to the position of the baffle plate 104, the inclined plane at the top of the buckling plate 217 is in contact with the baffle plate 104, the buckling plate 217 can move rightwards along with the material containing plate 203 and also move downwards through the extrusion of the baffle plate 104, when the baffle plate 104 abuts against the top end of the pinch plate 217, the protrusion on the pinch plate 217 is completely separated from the concave part of the limit bayonet 212, the material containing plate 203 continues to move rightwards, the abutting plate 214 cannot move along with the material containing plate 203, when the pinch plate 217 is completely moved out of the limit bayonet 212, the material containing plate 203 is separated from the abutting plate 214, the discharging rod 209 is restored to the initial state under the action of the first reset spring 224, the material leakage through hole 207 is sealed by the material baffle plate 208 again, the discharging is still carried out after the spreading is finished, if the next printing needs to use another type of metal powder, the material containing plate 203 is switched over by controlling the second servo motor 202 to rotate, the switching of the types of the metal powder can be finished, the previous process is repeated, the uniform spreading of another type of metal powder can be finished, the problem that only one type of metal powder can be spread in the powder spreading process of the metal powder spreading device in the prior art is, the problem that the metal piece printed by various metals is required to be produced cannot be solved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a two laser metal printer metal powder device that paves which characterized in that of 3D: the metal powder spreading device comprises a material loading part, a horizontal moving part and a powder spreading part, wherein the horizontal moving part is used for driving the material loading part to move back and forth, the powder spreading part is used for spreading metal powder, the material loading part is arranged on the horizontal moving part, and the powder spreading part is arranged on the material loading part;
the horizontal moving part comprises a right frame (100) and a left mounting plate (101), the right frame (100) and the left mounting plate (101) are respectively and fixedly mounted on the inner walls of the two sides of the inner cavity of the 3D double-laser metal printer, the top of the right frame (100) and the left mounting plate (101) are connected with a guide connecting rod (102) which is horizontally arranged, two sides of the bottom of the right frame (100) are fixedly connected with guide rails (103) which are horizontally arranged, the end parts of the two guide rails (103) far away from the right frame (100) are connected with a baffle (104) together, the top of the right frame (100) and the left mounting plate (101) are connected with a first screw rod (105) in a rotating way, a first gear (106) is fixedly connected to the end part of the first screw rod (105), a second gear (107) is meshed with the first gear (106), the second gear (107) is provided with an output shaft and is fixedly connected with a first servo motor (108);
the material loading part comprises a horizontal moving plate (200), the horizontal moving plate (200) is connected to the surfaces of two guide connecting rods in a sliding mode, the middle of the horizontal moving plate (200) is in threaded connection with the surface of a first screw rod (105), a motor mounting frame (201) is arranged below the horizontal moving plate (200), a screw rod transmission mechanism for driving the horizontal moving plate (200) to reciprocate back and forth is connected between the motor mounting frame (201) and the horizontal moving plate (200), a second servo motor (202) is fixedly mounted on the motor mounting frame (201), an output shaft of the second servo motor (202) is rotatably connected with the bottom of the motor mounting frame (201) through a bearing, an output shaft of the second servo motor (202) is connected with a material containing plate (203) through a connecting rod, the material containing plate (203) is designed into a square shape, and four sides of the material containing plate (203) are provided with pushing surfaces (204), the material containing holes (205) formed in the top surface of the material containing plate (203) are formed in one side of the extrusion surface (204), a round table type material guide funnel (206) is fixedly connected into each material containing hole (205), material leaking through holes (207) formed in the material containing plate (203) are formed in the middle of the bottom surface of each round table type material guide funnel (206), a material baffle plate (208) covers the top surface of each material leaking through hole (207), a discharging rod (209) is fixedly connected onto the surface of each material baffle plate (208), each discharging rod (209) penetrates through the round table type material guide funnel, each discharging rod (209) is assembled with the round table type material guide funnel (206) in a sliding mode, a first reset spring (224) fixed to the left end of each discharging rod (209) is sleeved on each discharging rod (209), a trapezoidal rod (210) located on the outer side of the extrusion surface (204) is connected to the end portion of each discharging rod (209), and connecting plates (211) fixed to the extrusion surface (204) are arranged on two sides of each trapezoidal rod (210), every all be equipped with spacing bayonet socket (212) on linking plate (211), every linking plate (211) openly top all is fixed with first inclined plane kicking block (213), be equipped with vertical butt joint board (214) of arranging between first inclined plane kicking block (213), be equipped with on the side that butt joint board (214) are close to linking plate (211) with butt joint groove (215) of trapezoidal pole (210) butt joint, butt joint groove (215) one side is equipped with and moves strip (216) with butt joint board (214) fixed connection, it is equipped with buckle (217) with the anti "J" style of calligraphy of butt joint board (214) side sliding assembly to move strip (216) one side, buckle (217) bottom fixedly connected with and butt joint board (214) side fixed connection's first gas spring (218).
2. The metal powder paving device for the 3D double-laser metal printer according to claim 1, characterized in that: the powder spreading part comprises a connecting steel bar (300) fixedly connected with the bottom surface of the horizontal moving plate (200), the connecting steel bar (300) is vertically arranged, the bottom of the connecting steel bar (300) is fixedly connected with a horizontally arranged mounting strip plate (301), and the mounting strip plate (301) is fixedly connected with a horizontally arranged powder spreading rod (302).
3. The metal powder paving device for the 3D double-laser metal printer according to claim 1, characterized in that: the discharging rod (209) is provided with a self-control mechanism, the self-control mechanism comprises a third gas spring (400) which penetrates through the material containing plate (203) and is assembled with the material containing plate in a sliding way, the bottom end of the third gas spring (400) is fixedly connected with the trapezoidal rod (210), the top end of a third gas spring (400) is fixedly connected with the discharging rod (209), the top end of a containing rod part of the third gas spring (400) is fixedly connected with a second inclined plane ejector block (401), and the top end of the movable rod part of the third gas spring (400) is fixedly connected with an arc-shaped stop block (402), a double-inclined-plane movable block (403) is arranged on one side of the arc-shaped block (402), a sliding column (404) which is assembled with the material containing plate (203) in a sliding manner is fixedly connected to the bottom surface of the double-inclined-plane movable block (403), the sliding column (404) is sleeved with a return spring (405) positioned between the material containing plate (203) and the double-inclined-surface moving stop block (403).
4. The metal powder paving device for the 3D double-laser metal printer according to claim 1, characterized in that: screw drive mechanism is including setting up guide slot (500) in horizontal moving plate (200) bottom, guide slot (500) and motor mounting bracket (201) sliding assembly, and guide slot (500) rotate and be equipped with second lead screw (501), second lead screw (501) top is equipped with third servo motor (502) with horizontal moving plate (200) top surface fixed connection, and motor mounting bracket (201) top is run through in second lead screw (501) and rather than screw assembly, second lead screw (501) one end fixedly connected with third gear (503), third gear (503) meshing has fourth gear (504), fourth gear (504) and third gear (503) are connected with chain (505) jointly.
5. The metal powder paving device for the 3D double-laser metal printer according to claim 1, characterized in that: be equipped with positioning mechanism on butt-joint plate (214), positioning mechanism is including setting up second air spring (219) in first air spring (218) top, second air spring (219) and butt-joint plate (214) side fixed connection and second air spring (219) top fixedly connected with location strip (220), location strip (220) side is equipped with and is used for interface (221) with first inclined plane kicking block (213) butt joint, and location strip (220) pass have set up spacing through opening (222) on removal strip (216), and location strip (220) top and baffle (104) bottom surface block.
6. The metal powder paving device for the 3D double-laser metal printer according to claim 1, characterized in that: the trapezoidal rod (210) is fixedly connected with a guiding thin rod (223) which is horizontally arranged, the guiding thin rod (223) penetrates through the material containing plate (203) and the round table type material guide hopper (206), and the guiding thin rod (223) is assembled with the material containing plate (203) and the round table type material guide hopper (206) in a sliding mode.
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| CN202010696852.4A CN111822707B (en) | 2020-07-20 | 2020-07-20 | Metal powder paving device for 3D double-laser metal printer |
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| CN114654731B (en) * | 2022-02-17 | 2023-12-05 | 南京嘉翼精密机器制造股份有限公司 | Product unloading bottom plate for 3D printing |
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| JPH11315303A (en) * | 1998-04-30 | 1999-11-16 | Mitsubishi Materials Corp | Shoe box |
| CN202239634U (en) * | 2011-09-13 | 2012-05-30 | 余华乔 | Full-automatic production equipment for cold granulation of lead ingots |
| CN103276390B (en) * | 2013-05-31 | 2015-09-30 | 重庆大学 | Metal powder laser fusing shaping system power spreading device |
| CN204773649U (en) * | 2015-07-28 | 2015-11-18 | 昆明七零五所科技发展总公司 | Confession powder system of laser sintering 3D printer |
| CN205008580U (en) * | 2015-08-07 | 2016-02-03 | 湖南华曙高科技有限责任公司 | Selective laser sintering equipment |
| CN206561118U (en) * | 2017-01-17 | 2017-10-17 | 华南理工大学 | A kind of many material laser selective melting shaped devices of rotary multi-cylinder |
| CN208020810U (en) * | 2017-12-05 | 2018-10-30 | 广东鑫信工业有限公司 | A kind of powder feeding mechanism of powder compacting servo press |
| CN208408545U (en) * | 2018-03-20 | 2019-01-22 | 四川农业大学 | A kind of powder supply mechanism of metal 3D printer |
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Application publication date: 20201027 Assignee: Yantai Yida Financial Leasing Co., Ltd Assignor: SHANDONG CHARMRAY LASER TECHNOLOGY CO.,LTD. Contract record no.: X2021980014333 Denomination of invention: A metal powder paving device for 3D double laser metal printer Granted publication date: 20210326 License type: Exclusive License Record date: 20211208 |
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Denomination of invention: A metal powder paving device for 3D double laser metal printer Effective date of registration: 20211209 Granted publication date: 20210326 Pledgee: Yantai Yida Financial Leasing Co., Ltd Pledgor: SHANDONG CHARMRAY LASER TECHNOLOGY CO.,LTD. Registration number: Y2021980014465 |