CN108262476B - 3D printer of fan-shaped structure - Google Patents
3D printer of fan-shaped structure Download PDFInfo
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- CN108262476B CN108262476B CN201810339667.2A CN201810339667A CN108262476B CN 108262476 B CN108262476 B CN 108262476B CN 201810339667 A CN201810339667 A CN 201810339667A CN 108262476 B CN108262476 B CN 108262476B
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- 239000000843 powder Substances 0.000 claims abstract description 64
- 239000000463 material Substances 0.000 claims description 30
- 230000003028 elevating effect Effects 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000010146 3D printing Methods 0.000 abstract description 4
- 238000010304 firing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
Classifications
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/226—Driving means for rotary motion
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/30—Platforms or substrates
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/46—Radiation means with translatory movement
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/52—Hoppers
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
Abstract
The invention relates to the technical field of 3D printing, in particular to a 3D printer with a fan-shaped structure, which comprises a shell with a fan-shaped horizontal section, a laser burning device arranged at the top of the shell, a lifting platform arranged in the shell, a powder spreading mechanism and a control device, wherein the laser burning device comprises the laser burning mechanism and a first driving mechanism for driving the laser burning mechanism to translate, the powder spreading mechanism is arranged right above the lifting platform, the lifting platform is horizontally arranged and is of a fan-shaped structure, the powder spreading mechanism comprises a powder falling mechanism and a second driving mechanism for driving the powder falling mechanism to rotate, the bottom of the lifting platform is provided with a lifting assembly for driving the lifting platform to lift, and the control device comprises a controller and a sensor assembly electrically connected with the controller.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printer with a fan-shaped structure.
Background
The 3D printing is one kind of fast forming technology, and is one kind of technology of constructing object with powdered metal, plastic or other adhesive material based on digital model file in layer-by-layer printing mode.
The 3D printing is usually implemented by using a digital technology material printer, and is often used for manufacturing a model in the fields of mold manufacturing, industrial design and the like, and then is gradually used for directly manufacturing some products, so that more fields are applied, and most of the existing 3D printers are of rectangular structures, but only a small part of the area on a printing platform is used in the printing process, so that a large amount of space is not utilized, the existing equipment is large, a large unnecessary space is occupied, a certain space is wasted, and some working environments are crowded, so that the working efficiency is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a 3D printer with a fan-shaped structure.
In order to solve the problems, the invention provides the following technical scheme:
the utility model provides a fan-shaped structure's 3D printer, is including the horizontal cross-section for fan-shaped casing, set up laser firing device at the casing top, set up elevating platform, shop's powder mechanism and controlling means in the casing, laser firing device is including laser firing mechanism and the first actuating mechanism that is used for driving laser firing mechanism translation, shop's powder mechanism sets up directly over elevating platform, elevating platform level sets up and is fan-shaped structure, shop's powder mechanism is including falling the powder mechanism and being used for driving the rotatory second actuating mechanism of powder mechanism, elevating platform's bottom is provided with the elevating assembly that is used for driving elevating platform to go up and down, controlling means including the controller and with controller electric connection's sensor assembly.
Further, the laser firing mechanism is including the slip table with first actuating mechanism transmission complex, laser head and be used for finely tuning the fine setting subassembly of the height of laser head, the fine setting subassembly is including rectangular frame and the step motor of setting in rectangular frame, rectangular frame's top is provided with a plurality of and is the guiding tube that the matrix distributes, the laser head is installed in rectangular frame's bottom, step motor's output shaft is vertical up and fixedly connected with first lead screw, the bottom of slip table be provided with first lead screw thread fit's screw barrel and a plurality of and all guiding tube one-to-one guide bar.
Further, the first driving mechanism comprises a first driving component used for driving the sliding table to travel back and forth along one straight edge direction of the lifting platform and a first driving component used for driving the sliding table to travel back and forth along the other straight edge direction of the lifting platform, the first driving component is in sliding fit with the second driving component, the first driving component can drive the second driving component to travel along the driving direction of the first driving component, and the driving direction of the first driving component is perpendicular to the driving direction of the second driving component.
Further, the first driving assembly comprises two first driving motors, two sliding blocks and two first sliding rods, wherein the first driving motors, the two sliding blocks and the two first sliding rods are arranged at intervals along the driving direction of the second driving assembly, all the sliding blocks are in one-to-one sliding fit with all the first sliding rods, and each first driving motor is in transmission fit with one sliding block through one second screw rod.
Further, the second driving assembly comprises a second driving motor, a third screw rod and two second sliding rods, two ends of each second sliding rod are fixedly connected with two sliding blocks respectively, two ends of each third screw rod are in running fit with two sliding blocks respectively, an output shaft of the second driving motor is fixedly connected with the third screw rod, and the top of each sliding table is simultaneously in sliding fit with the two second sliding rods and in transmission fit with the third screw rod.
Further, the lifting assembly comprises a second lifting motor and a plurality of vertical rods, the second lifting motor is arranged at the bottom of the shell, an output shaft of the second lifting motor vertically upwards penetrates through the bottom of the shell and extends to the position right below the lifting platform, a fourth screw rod is fixedly connected with an output shaft of the lifting motor, a connecting cylinder in threaded fit with the fourth screw rod is arranged at the bottom of the lifting platform, the top ends of all the vertical rods are fixedly connected with the bottom of the lifting platform, and all the vertical rods are in sliding fit with the bottom of the shell.
Further, the powder falling mechanism comprises a material bearing component for bearing materials and a limiting component for limiting the blanking quantity, and the second driving mechanism comprises an arc-shaped annular gear and a meshing component meshed with the annular gear.
Further, the sensor assembly comprises a proximity sensor arranged on the material bearing assembly and a plurality of sensing blocks in sensing fit with the proximity sensor, and the proximity sensor is electrically connected with the controller.
The beneficial effects are that: according to the 3D printer with the fan-shaped structure, the controller simultaneously controls the first rotating motor, the second rotating motor and the third rotating motor to rotate, so that the spiral feeding rod and the limiting roller rotate to uniformly spread powder when spreading powder, after the powder on the lifting platform is completely spread, the controller controls the first driving component and the second driving component to drive the laser head to burn the metal powder on the lifting platform, after the burning is completed, the controller controls the second rotating motor to rotate to drive the lifting platform to descend for a certain distance, then the controller controls the powder spreading mechanism to reversely rotate to spread the powder again, then the first driving mechanism is controlled to drive the laser head to burn the metal powder again, and the steps are repeated.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of a second perspective structure of the present invention;
FIG. 3 is a schematic perspective view of the lift assembly, housing and first drive mechanism of the present invention;
FIG. 4 is a schematic diagram of a three-dimensional structure of the lifting platform and the powder spreading mechanism of the present invention;
FIG. 5 is a schematic diagram showing a three-dimensional structure of the lifting platform and the powder spreading mechanism;
FIG. 6 is a schematic perspective view of the powder spreading mechanism of the present invention;
FIG. 7 is an enlarged view at A of FIG. 6;
FIG. 8 is a schematic perspective view of a material bearing assembly according to the present invention;
FIG. 9 is a schematic perspective view of a restraint assembly of the present invention;
FIG. 10 is a schematic perspective view of a confining roller in accordance with the present invention;
FIG. 11 is a schematic perspective view of a first driving mechanism according to the present invention;
FIG. 12 is a schematic perspective view of a laser burning mechanism according to the present invention;
reference numerals illustrate: the laser burning device 2, the laser burning mechanism 2a, the sliding table 2a1, the laser head 2a2, the stepping motor 2a3, the rectangular frame 2a4, the first driving mechanism 2b, the first driving component 2b1, the second driving component 2b2, the first driving motor 2b3, the sliding block 2b4, the first sliding rod 2b5, the second driving motor 2b6, the second sliding rod 2b7, the lifting platform 3, the lifting component 3a, the second lifting motor 3a1, the vertical rod 3a2, the powder spreading mechanism 4, the powder falling mechanism 4a, the second driving mechanism 4b, the material bearing component 4c, the material bearing hopper 4c1, the spiral feeding rod 4c2, the first rotating motor 4c3, the limiting component 4d, the limiting roller 4d1, the second rotating motor 4d2, the quantitative groove 4d3, the inner gear ring 4e, the meshing component 4f, the third rotating motor 4f1, the gear 4f2, the proximity sensor 5 and the sensing block 5a.
Detailed Description
Specific embodiments of the invention are described in further detail below with reference to the drawings and examples of the specification:
referring to the 3D printer of fan-shaped structure shown in fig. 1-12, including the horizontal cross-section for fan-shaped casing 1, set up at the laser firing device 2 at casing 1 top, set up elevating platform 3, shop powder mechanism 4 and controlling means in casing 1, laser firing device 2 is including laser firing mechanism 2a and be used for driving the first actuating mechanism 2b of laser firing mechanism 2a translation, shop powder mechanism 4 sets up directly over elevating platform 3, elevating platform 3 level sets up and is fan-shaped structure, shop powder mechanism 4 is including falling powder mechanism 4a and be used for driving falling powder mechanism 4a rotatory second actuating mechanism 4b, elevating platform 3's bottom is provided with the elevating assembly 3a that is used for driving elevating platform 3 to go up and down, controlling means including the controller and with controller electric connection's sensor assembly, the controller simultaneously controls second actuating mechanism 4b and carries out the time after the laser firing mechanism 3 spreads the powder completely, and the controller controls first actuating mechanism 2b and carries out the controller to drive 2a2 to the metal powder on elevating platform 3 to go up and down the elevating platform 3a control the elevating assembly and then carries out the step 2 and repeat the step of controlling the elevating platform 2 to fall powder firing mechanism 3a and then to carry out the step 2 and repeat the elevating platform 2.
The laser burning mechanism 2a comprises a sliding table 2a1, a laser head 2a2 and a fine adjustment assembly, wherein the sliding table 2a1 and the laser head 2a2 are in transmission fit with the first driving mechanism 2b, the fine adjustment assembly comprises a rectangular frame 2a4 and a stepping motor 2a3 arranged in the rectangular frame 2a4, a plurality of guide cylinders distributed in a matrix are arranged at the top of the rectangular frame 2a4, the laser head 2a2 is arranged at the bottom of the rectangular frame 2a4, an output shaft of the stepping motor 2a3 is vertically upwards and fixedly connected with a first screw rod, a thread cylinder in threaded fit with the first screw rod and a plurality of guide rods in one-to-one correspondence with all the guide cylinders are arranged at the bottom of the sliding table 2a1, and the fine adjustment assembly can adjust the initial distance between the laser head 2a relative to the lifting platform 3 so as to ensure the burning effect.
The first driving mechanism 2b comprises a first driving component 2b1 used for driving the sliding table 2a1 to travel back and forth along one straight edge direction of the lifting platform 3 and a first driving component 2b1 used for driving the sliding table 2a1 to travel back and forth along the other straight edge direction of the lifting platform 3, the first driving component 2b1 is in sliding fit with the second driving component 2b2, the first driving component 2b1 can drive the second driving component 2b2 to travel along the driving direction of the first driving component 2b1, and the driving direction of the first driving component 2b1 is perpendicular to the driving direction of the second driving component 2b2, so that the laser head 2a2 can be guaranteed to be translated to any position of the lifting platform 3.
The first driving assembly 2b1 comprises two first driving motors 2b3, two sliding blocks 2b4 and two first sliding rods 2b5 which are arranged at intervals along the driving direction of the second driving assembly 2b2, all the sliding blocks 2b4 are in one-to-one sliding fit with all the first sliding rods 2b5, each first driving motor 2b3 is in transmission fit with one sliding block 2b4 through a second screw rod, the first driving motor 2b3 is electrically connected with the controller, the controller is used for driving the first driving motor 2b3 to rotate, and the sliding blocks 2b4 are driven to slide on the first sliding rods 2b5, so that the second driving assembly 2b2 moves on the first sliding rods 2b 5.
The second driving assembly 2b2 comprises a second driving motor 2b6, a third screw rod and two second sliding rods 2b7, two ends of each second sliding rod 2b7 are respectively and fixedly connected with the two sliding blocks 2b4, two ends of each third screw rod are respectively and rotatably matched with the two sliding blocks 2b4, an output shaft of the second driving motor 2b6 is fixedly connected with the third screw rod, the top of the sliding table 2a1 is simultaneously and slidably matched with the two second sliding rods 2b7 and is in transmission fit with the third screw rod, the second driving motor 2b6 is electrically connected with the controller, the controller controls the second driving motor 2b6 to rotate, and the sliding table 2a1 is driven to travel back and forth in the axis direction of the second sliding rods 2b 7.
The lifting assembly 3a comprises a second lifting motor 3a1 and a plurality of vertical rods 3a2, the second lifting motor 3a1 is arranged at the bottom of the shell 1, an output shaft of the second lifting motor 3a1 vertically upwards penetrates through the bottom of the shell 1 and extends to the position right below the lifting platform 3, a fourth screw rod is fixedly connected with an output shaft of the lifting motor, a connecting cylinder in threaded fit with the fourth screw rod is arranged at the bottom of the lifting platform 3, the top ends of all the vertical rods 3a2 are fixedly connected with the bottom of the lifting platform 3, all the vertical rods 3a2 are in sliding fit with the bottom of the shell 1, the controller controls the second lifting motor 3a1 to rotate, and vertical displacement is realized between the fourth screw rod and the connecting cylinder, so that lifting of the lifting platform 3 is realized.
The powder falling mechanism 4a comprises a material bearing component 4c for bearing materials and a limiting component 4d for limiting the blanking amount, the second driving mechanism 4b comprises an arc-shaped annular gear 4e and a meshing component 4f meshed with the annular gear 4e, and the material bearing component 4c and the limiting component 4d are matched with the annular gear 4e through the meshing component 4f to rotate so as to spread powder on the lifting platform 3.
The sensor assembly comprises a proximity sensor 5 and a plurality of sensing blocks 5a, wherein the proximity sensor 5 is arranged on the material bearing assembly 4c, the sensing blocks 5a are in sensing fit with the proximity sensor 5, the proximity sensor 5 is electrically connected with the controller, when the proximity sensor 5 detects the sensing blocks 5a, an electric signal is transmitted to the controller, and the controller controls the meshing assembly 4f to stop rotating.
The material bearing assembly 4c comprises a material bearing hopper 4c1 and a feeding assembly, the material bearing hopper 4c1 is horizontally arranged and is in a strip shape, the area of the longitudinal section of the material bearing hopper 4c1 along the center line of the material bearing hopper 4c1 from the center of the lifting platform to the arc edge direction of the lifting platform is gradually increased, and the material bearing hopper 4c1 is ensured to evenly spread powder on the lifting platform 3.
The feeding assembly comprises a spiral feeding rod 4c2 horizontally arranged in a hopper 4c1 and a first rotary motor 4c3 fixedly arranged on the hopper 4c1, the axis of the spiral feeding rod 4c2 coincides with the central line of the hopper 4c1, one end of the spiral feeding rod 4c2 is fixedly connected with an output shaft of the first rotary motor 4c3, a feeding hole is formed in the hopper 4c1, and metal powder is conveyed to any position of the hopper 4c1 by the spiral feeding rod 4c 2.
The limiting assembly 4d comprises a limiting roller 4d1 arranged in the hopper 4c1 and a second rotating motor 4d2 used for driving the limiting roller 4d1 to rotate, the limiting roller 4d1 is a long-strip-shaped cone, the small end of the limiting roller 4d1 is parallel to the center line of the spiral feeding rod 4c2, the limiting roller 4d1 is arranged right below the spiral feeding rod 4c2, the output end of the second rotating motor 4d2 is fixedly connected with the small end of the limiting roller 4d1, the axis of the second rotating motor 4d2 coincides with the axis of the limiting roller 4d1, and each time the first rotating motor 4c3 rotates for a certain angle, a certain amount of metal powder falls down from the hopper 4c 1.
The conical surface of the limiting roller 4d1 is provided with a plurality of quantitative grooves 4d3, all the quantitative grooves 4d3 are distributed along the equal angular difference of the axis of the limiting roller 4d1, the quantitative grooves 4d3 are long-strip-shaped semicircular grooves, the small head ends of the quantitative grooves 4d3 are in a circle center pointing to the lifting platform, and metal powder in the quantitative grooves 4d3 can ensure that each time the quantitative grooves slide through a certain angle, so that the area of the hopper 4c1 passing through the lifting platform 3 can obtain the metal powder with equal density.
The inner gear ring 4e is fixedly arranged on the shell 1, the inner gear ring 4e is horizontally arranged, the circle center of the inner gear ring is arranged right above the lifting platform 3, the big end of the material receiving hopper 4c1 is provided with a rotating wheel which is in sliding fit with the bottom of the inner gear ring 4e, the meshing component 4f is meshed with the inner gear ring 4e, and one end of the material receiving hopper 4c1 far away from the inner gear ring 4e is rotationally connected with the inner side of the shell 1.
The meshing assembly 4f comprises a gear 4f2 and a third rotating motor 4f1 which are arranged on the hopper 4c1, the third rotating motor 4f1 is arranged on the hopper 4c1, the gear 4f2 is meshed with the inner gear ring 4e, the gear 4f2 is fixedly connected with an output shaft of the third rotating motor 4f1, the third rotating motor 4f1 rotates, the gear 4f2 is driven to be meshed with the inner gear ring 4e, and the hopper 4c1 is driven to rotate to spread powder on the lifting platform 3.
Working principle: the controller simultaneously controls the first rotating motor 4c3, the second rotating motor 4d2 and the third rotating motor 4f1 to rotate, so that the spiral feeding rod 4c2 and the limiting roller 4d1 rotate to uniformly spread powder when spreading the powder, the first driving component 2b1 and the second driving component 2b2 are controlled by the controller to drive the laser head 2a2 to burn the metal powder on the lifting platform 3 after the lifting platform 3 is completely spread with the powder, the controller controls the second rotating motor 4d2 to rotate to drive the lifting platform 3 to descend for a certain distance after the burning is completed, then the controller controls the powder spreading mechanism 4 to reversely rotate to spread the powder again on the lifting platform 3, and then controls the first driving mechanism 2b to drive the laser head 2a2 to burn the metal powder again, and the steps are repeated.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.
Claims (6)
1. A3D printer of fan-shaped structure, its characterized in that: the laser powder spreading device comprises a shell (1) with a fan-shaped horizontal section, a laser powder spreading device (2) arranged at the top of the shell (1), a lifting platform (3) arranged in the shell (1), a powder spreading mechanism (4) and a control device, wherein the laser powder spreading device (2) comprises a laser powder spreading mechanism (2 a) and a first driving mechanism (2 b) used for driving the laser powder spreading mechanism (2 a) to translate, the powder spreading mechanism (4) is arranged right above the lifting platform (3), the lifting platform (3) is horizontally arranged and is of a fan-shaped structure, the powder spreading mechanism (4) comprises a powder falling mechanism (4 a) and a second driving mechanism (4 b) used for driving the powder falling mechanism (4 a) to rotate, and a lifting assembly (3 a) used for driving the lifting platform (3) to lift is arranged at the bottom of the lifting platform (3), and the control device comprises a controller and a sensor assembly electrically connected with the controller.
The powder falling mechanism (4 a) comprises a material bearing component (4 c) for bearing materials and a limiting component (4 d) for limiting the blanking amount, and the second driving mechanism (4 b) comprises an arc-shaped annular gear and a meshing component (4 f) meshed with the annular gear;
the sensor assembly comprises a proximity sensor (5) arranged on the material bearing assembly (4 c) and a plurality of sensing blocks (5 a) which are in sensing fit with the proximity sensor (5), and the proximity sensor (5) is electrically connected with the controller;
the material bearing assembly (4 c) comprises a material bearing hopper (4 c 1) and a feeding assembly, the material bearing hopper (4 c 1) is horizontally arranged and is in a strip shape, the area of the longitudinal section of the material bearing hopper (4 c 1) along the center line of the material bearing hopper from the circle center of the lifting platform to the arc edge direction of the lifting platform is gradually increased, and the material bearing hopper (4 c 1) is ensured to uniformly spread powder on the lifting platform (3);
the feeding assembly comprises a spiral feeding rod (4 c 2) horizontally arranged in a hopper (4 c 1) and a first rotary motor (4 c 3) fixedly arranged on the hopper (4 c 1), the axis of the spiral feeding rod (4 c 2) coincides with the central line of the hopper (4 c 1), one end of the spiral feeding rod (4 c 2) is fixedly connected with the output shaft of the first rotary motor (4 c 3), a feeding hole is formed in the hopper (4 c 1), and metal powder is conveyed to any position of the hopper (4 c 1) by the spiral feeding rod (4 c 2);
the limiting assembly (4 d) comprises a limiting roller (4 d 1) arranged in the hopper (4 c 1) and a second rotating motor (4 d 2) used for driving the limiting roller (4 d 1) to rotate, the limiting roller (4 d 1) is a long-strip-shaped cone, the small end of the limiting roller (4 d 1) is parallel to the center line of the spiral feeding rod (4 c 2) with the axis of the limiting roller (4 d 1) pointing to the center of the lifting platform (3), the limiting roller (4 d 1) is arranged right below the spiral feeding rod (4 c 2), the output end of the second rotating motor (4 d 2) is fixedly connected with the small end of the limiting roller (4 d 1), the axis of the second rotating motor (4 d 2) coincides with the axis of the limiting roller (4 d 1), and each time the first rotating motor (4 c 3) rotates for a certain angle to enable the hopper (4 c 1) to fall down a certain amount of metal powder;
the utility model discloses a metal powder collection device, including limiting roller (4 d 1), conical surface, material loading hopper (4 c 1), metal powder, limiting roller (4 d 1), a plurality of ration groove (4 d 3) are provided with to the conical surface of limiting roller (4 d 1), all ration groove (4 d 3) are equiangular distribution along the axis of limiting roller (4 d 1), ration groove (4 d 3) are rectangular form and are semicircle conical recess, the tip of ration groove (4 d 3) and the centre of a circle of directional elevating platform, metal powder in ration groove (4 d 3) can guarantee to slide certain angle for hopper (4 c 1) is in the area through elevating platform (3), can obtain the metal powder of isopycnic.
2. A fan structured 3D printer according to claim 1, wherein: the laser burning mechanism (2 a) comprises a sliding table (2 a 1) in transmission fit with a first driving mechanism (2 b), a laser head (2 a 2) and a fine adjustment assembly for fine adjustment of the height of the laser head (2 a 2), the fine adjustment assembly comprises a rectangular frame (2 a 4) and a stepping motor (2 a 3) arranged in the rectangular frame (2 a 4), a plurality of guide cylinders distributed in a matrix are arranged at the top of the rectangular frame (2 a 4), the laser head (2 a 2) is arranged at the bottom of the rectangular frame (2 a 4), an output shaft of the stepping motor (2 a 3) is vertically upwards and fixedly connected with a first screw rod, and a threaded cylinder matched with the first screw rod and a plurality of guide rods in one-to-one correspondence with all the guide cylinders are arranged at the bottom of the sliding table (2 a 1).
3. A fan structured 3D printer according to claim 2, wherein: the first driving mechanism (2 b) comprises a first driving component (2 b 1) used for driving the sliding table (2 a 1) to travel back and forth along one straight edge direction of the lifting platform (3) and a first driving component (2 b 1) used for driving the sliding table (2 a 1) to travel back and forth along the other straight edge direction of the lifting platform (3), the first driving component (2 b 1) is in sliding fit with the second driving component (2 b 2), the first driving component (2 b 1) can drive the second driving component (2 b 2) to travel along the driving direction of the first driving component (2 b 1), and the driving direction of the first driving component (2 b 1) is perpendicular to the driving direction of the second driving component (2 b 2).
4. A fan structured 3D printer according to claim 3, wherein: the first driving assembly (2 b 1) comprises two first driving motors (2 b 3), two sliding blocks (2 b 4) and two first sliding bars (2 b 5) which are arranged at intervals along the driving direction of the second driving assembly (2 b 2), all the sliding blocks (2 b 4) are in one-to-one sliding fit with all the first sliding bars (2 b 5), and each first driving motor (2 b 3) is in transmission fit with one sliding block (2 b 4) through one second screw rod.
5. A fan structured 3D printer according to claim 4, wherein: the second driving assembly (2 b 2) comprises a second driving motor (2 b 6), a third screw rod and two second sliding rods (2 b 7), two ends of each second sliding rod (2 b 7) are fixedly connected with two sliding blocks (2 b 4) respectively, two ends of each third screw rod are in running fit with the two sliding blocks (2 b 4) respectively, an output shaft of the second driving motor (2 b 6) is fixedly connected with the third screw rod, and the top of each sliding table (2 a 1) is simultaneously in sliding fit with the two second sliding rods (2 b 7) and in transmission fit with the third screw rod.
6. A fan structured 3D printer according to claim 5, wherein: lifting assembly (3 a) is including second elevator motor (3 a 1) and a plurality of vertical pole (3 a 2), second elevator motor (3 a 1) set up the bottom at casing (1), the output shaft of second elevator motor (3 a 1) vertically upwards runs through casing (1) bottom and extends to under elevating platform (3), elevating platform (3)'s output shaft fixedly connected with fourth lead screw, elevating platform (3)'s bottom be provided with fourth lead screw-thread fit's connecting cylinder, the top of all vertical poles (3 a 2) and elevating platform (3) bottom fixed connection, all vertical pole (3 a 2) all with casing (1) bottom sliding fit.
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| CN108994458A (en) * | 2018-08-27 | 2018-12-14 | 广西慧思通科技有限公司 | It is a kind of using metal foil as the 3D printer of raw material |
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