CN107053429B - 3D printer and method capable of achieving precise forming of ceramic part blank - Google Patents
3D printer and method capable of achieving precise forming of ceramic part blank Download PDFInfo
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- CN107053429B CN107053429B CN201710487550.4A CN201710487550A CN107053429B CN 107053429 B CN107053429 B CN 107053429B CN 201710487550 A CN201710487550 A CN 201710487550A CN 107053429 B CN107053429 B CN 107053429B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0081—Process control
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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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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention discloses a 3D printer and a method capable of realizing precision forming of a ceramic part blank, which solve the problems of poor slurry coating uniformity and low precision in the prior art and have the beneficial effect of improving the 3D printing precision of a ceramic part, and the scheme is as follows: the printer includes a forming station for receiving the slurry; the spreading mechanism comprises a spreading cylinder unit, the spreading cylinder unit comprises a spreading cylinder, a rotatable extruding screw rod is arranged in the spreading cylinder, and an outlet facing the forming platform is arranged at the bottom of the spreading cylinder; the horizontal moving mechanism is arranged on two sides of the forming platform, the scraping plate is arranged between the horizontal moving mechanisms and is arranged below the material spreading cylinder or on the lower side of the material spreading cylinder, the two sides of the material spreading cylinder are respectively arranged on the horizontal moving mechanism to drive the material spreading cylinder to move, and the scraping plate is driven by the movement of the material spreading cylinder to complete the material spreading and leveling actions in a coordinated manner.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printer and a method capable of realizing precise forming of a ceramic part blank, wherein the ceramic part with high strength and a complex structure can be obtained after sintering the ceramic blank formed by 3D printing.
Background
The ceramic material is widely applied to the fields of machining, biomedicine, aerospace and the like by virtue of the characteristics of excellent mechanical strength, good biocompatibility, stable high-temperature performance and the like. However, the conventional manufacturing process cannot meet the requirement of the ceramic parts with complex shapes in the actual production process. Meanwhile, the inherent characteristics of the ceramic material, such as brittleness, high hardness and the like, cause the ceramic material to be difficult to carry out precise and efficient material reduction processing like metal. And the ceramic 3D printing technology based on the photocuring principle (SLA) is expected to overcome the difficulties and realize the preparation and molding of ceramic parts with complex shapes. The method comprises the following steps of (1) carrying out 3D printing on photocuring ceramic to prepare a blank by taking photosensitive ceramic slurry as a raw material and an ultraviolet laser as a trigger light source and curing the slurry layer by layer; and then the blank is subjected to degreasing, sintering and other processes to obtain the required ceramic part.
The ceramic 3D printing technology based on the photocuring principle completes the manufacture of the part blank in a layer-by-layer overlapping mode, so that the thickness and uniformity of the layer play an important role in the precision of the part. For example, the spherical surface appearance is manufactured by a 3D printing technology, the gradient phenomenon of the spherical surface is weaker when the thickness of the layering is smaller, and the surface forming precision is greatly improved. However, the relatively high viscosity property (-3000 mPas) of photosensitive ceramic slurry makes it difficult to ensure uniform liquid level during the coating of each layer of the slurry, especially in precision manufacturing processes requiring very small layer thicknesses (10 μm to 500 μm). The non-uniformity of the viscous slurry coating can greatly reduce the forming precision of the ceramic blank, and further reduce the precision of the sintered ceramic part.
In the prior art, a 3D printer exists, but raw materials are only limited to low-viscosity photosensitive resin materials, and the curing and molding of high-viscosity ceramic slurry cannot be realized; the equipment is based on SLA principle and is suitable for 3D forming of ceramic blanks, but corresponding design and report on precision problems such as coating uniformity and coating thickness of each layer of slurry are not made.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the 3D printer capable of realizing the precise forming of the ceramic part blank, the thickness (10-500 mu m) of the layer can be accurately controlled through the printer, the uniform laying consistency of each layer of slurry is realized, and the ceramic part with high precision and strength and complicated shape is finally obtained.
The specific scheme of the 3D printer capable of realizing the precise forming of the ceramic part blank is as follows:
A3D printer capable of realizing precision forming of a ceramic part blank comprises:
a forming table for receiving a slurry;
the bottom of the forming platform is provided with a platform lifting mechanism which can drive the forming platform to move up and down;
the spreading mechanism comprises a spreading cylinder unit, the spreading cylinder unit comprises a spreading cylinder, a rotatable extruding screw rod is arranged in the spreading cylinder, and an outlet facing the forming platform is arranged at the bottom of the spreading cylinder;
the horizontal moving mechanisms are arranged on two sides of the forming platform, a scraping plate is arranged between the horizontal moving mechanisms and is arranged below the material spreading barrel or below the material spreading barrel, two sides of the material spreading barrel are respectively arranged on the horizontal moving mechanisms to drive the material spreading barrel to move horizontally, and the scraping plate is driven by the movement of the material spreading barrel to cooperatively complete the actions of material spreading and material leveling; the speed of the scraping plate can be accurately adjusted within the range of 0-100 mm/s;
the controller is respectively and independently connected with the spreading mechanism and the horizontal moving mechanism and comprises a sensing feedback unit and a mechanical motion control unit, and the mechanical motion control unit controls the actions of the horizontal moving mechanism and the spreading mechanism.
The printer further comprises a laser scanning mechanism, the laser scanning mechanism comprises a laser and a scanning galvanometer component, laser emitted by the laser passes through the scanning galvanometer component and then is projected onto the forming platform to carry out contour scanning and curing on each layer of the part, and the wavelength of the laser is 355 nm-405 nm.
The stone material mechanism still includes the feed unit, the feed unit includes the feed bucket, the feed bucket is connected with the feed inlet of spreading the material section of thick bamboo, spread material section of thick bamboo top one side is located to the feed inlet, the feed bucket top sets up the extrusion head, the extrusion head is connected with electronic pushing cylinder, electronic pushing cylinder one end is passed through lifting support and is connected with the feed bucket, electronic pushing cylinder other end sets up the extrusion head, the extrusion head is the toper shape, electronic pushing cylinder stretches out, send thick liquids into the feed inlet of spreading the material section of thick bamboo through the hose from feed bottom of the barrel portion through the extrusion head, the vertical setting of feed bucket, and the setting of spreading material section of thick bamboo level, spread the material section of thick bamboo, feed bucket and clout recycling bin just can just dismantle in the mean square.
The feed bucket is fixed in the optical platform through the support, and the top and the bottom of feed bucket are fixed to the support, and the optical platform passes through the organism to be supported and locates the both sides of shaping platform.
Platform elevating system includes two sets of vertical linear modules, sets up a driving motor between two sets of vertical linear modules, and a driving motor drives vertical linear module through the meshing gear and reciprocates, and the lower part of shaping platform is located to vertical linear module, and locates the middle part of organism, and vertical linear module passes through vertical support and is connected with optical platform.
Set up the magnetic grid chi on vertical linear module, set up the magnetic head on the shaping platform, the magnetic head is used for detecting the height of shaping platform with the cooperation of magnetic grid chi, and the liquid level testing result transmits for the controller through sensing feedback unit, and then control horizontal migration mechanism and platform elevating system carry out corresponding correction, compensation action, realize the on-line monitoring and the intelligent compensation of ceramic thick liquids liquid level, and the magnetic grid chi also can be replaced by other height measurement device.
The optical platform is characterized in that a residual material recycling groove is formed in the forming platform, the bottom of the residual material recycling groove is connected with a residual material recycling bin through a guide pipe, and a residual material storage barrel is also arranged at the lower part of the optical platform.
The extruding lead screw is connected with a second driving motor through a coupler;
furthermore, the horizontal moving mechanism is a horizontal linear module, and the horizontal linear module is connected with a third driving motor.
The scraping plate is parallel to the forming platform, and further, the working end, namely the lower surface of the scraping plate is horizontally attached to the surface of the slurry; and the height of the optical platform can be adjusted, and the fine adjustment of the parallel position relation between the scraping plate and the forming platform is realized by adjusting the height of the optical platform.
In order to overcome the defects of the prior art, the invention also provides a using method of the 3D printer capable of realizing the precise forming of the ceramic part blank, which comprises the following steps:
1) inputting the information of the part into a controller, returning the spreading mechanism to the right origin of the forming platform, and descending the forming platform by one layer thickness;
2) according to the control of the controller, the spreading mechanism uniformly distributes the slurry in the spreading cylinder under the operation of the extruding screw rod;
3) the horizontal moving mechanism drives the material spreading barrel and the material scraping plate to move towards the left side, and meanwhile, the slurry is spread on the forming platform through an outlet of the material spreading barrel;
4) laser emitted by the laser passes through the scanning galvanometer component and then is projected onto the forming platform to carry out contour scanning solidification on each layer of the part;
5) the horizontal moving mechanism moves, and the redundant slurry is sent to the recovery tank through the scraper plate;
6) after the step 5), the platform lifting mechanism descends one layer thick, and the horizontal moving mechanism drives the spreading mechanism to return to the original position;
7) laying the cylinder and repeating the steps 2) to 6).
Compared with the prior art, the invention has the beneficial effects that:
1) the invention has reasonable structure, high automation degree and good 3D printing precision and has important significance for solving the manufacturing problem of ceramic parts with complex shapes.
2) The forming platform provided by the invention can be lifted through the servo motor and the linear module, has high movement precision, and is provided with the magnetic grid ruler, so that the height detection and compensation in the part manufacturing direction can be realized.
3) The forming platform realizes scraping movement in the horizontal direction through the servo motor and the linear module, has a large adjustable range of movement speed, is beneficial to realizing layering of slurry with different viscosities according to the shearing and thinning behavior of viscous fluid, and has important significance for realizing curing and forming of different types of ceramic slurry.
4) According to the invention, the slurry can be supplied according to the requirement through the material laying barrel unit and the material supply unit, so that the uniform laying of each layer of slurry is favorably realized, and the automatic recovery and reutilization of the slurry are favorably realized by the recovery unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of the overall structure of a 3D forming printer for ceramic blanks;
FIG. 2 is a schematic structural diagram of a spreading barrel unit;
FIG. 3 is a schematic diagram of a hardware system of a 3D forming printer for ceramic blanks;
in the figure: 1 shaping platform, 2 first actuating mechanism, 3 meshing gears, 4 vertical linear modules, 5 magnetic grid chi, 6 spreading barrel, 7 scraping plate, 8 second actuating mechanism, 9 shaft couplings, 10 extrusion lead screws, 11 spreading barrel feed inlets, 12 horizontal linear modules, 13 third actuating mechanism, 14 hold-in range, 15 gears, 16 optical platform, 17 organism, 18 feed barrels, 19 extrusion heads, 20 electronic feed bars, 21 laser instrument, 22 galvanometer system, 23 residual recycling groove, 24 pipe, 25 storage vat.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the prior art has disadvantages, and in order to solve the above technical problems, the present application provides a 3D printer and a method capable of achieving precise forming of a ceramic part blank.
In an exemplary embodiment of the present application, as shown in fig. 1, a high precision ceramic body 3D forming printer mainly includes: the device comprises a forming platform, a spreading mechanism, a horizontal moving mechanism, a laser scanning mechanism and a controller.
As shown in fig. 1, the forming table 1 is connected to a table lifting unit. The forming platform 1 is tightly matched with the machine body 17, and the range of forming parts can be 300 multiplied by 300mm3. Platform lift unit contains linear module 4, first driving motor 2 and the meshing gear 3 of two vertical installations, and elevating platform one side is equipped with magnetic grid chi 5, and the sensor realizes the real-time detection of liquid level height through detecting magnetic grid chi 5. The horizontal moving mechanism comprises a linear module 12, a servo motor 13, a synchronous belt 14, a gear 15 and a scraping plate 7 which are horizontally arranged, and the scraping plate 7 is fixed on the horizontal linear module 12 to realize scraping movement with adjustable speed; the horizontal linear module 12 is arranged on a horizontal optical platform 16, and the scraping plate 7 and the forming platform 1 can be parallel by adjusting the optical platform 16.
The spreading mechanism comprises a spreading cylinder unit, a feeding unit and a recovery unit. As shown in fig. 2, the material spreading cylinder unit comprises an extruding screw 10, a coupling 9, a second driving motor 8 and a feeding hole 11, wherein the extruding screw 10 is connected with the second driving motor 8; the spreading cylinder 6 is fixed above the scraping plate 7, the spreading cylinder 6 is in a cylindrical shape, the discharge port is positioned at the rear side of the scraping plate 7, and the feed port 11 is connected with the feed barrel 18 through a hose. The feeding unit comprises an extrusion head 19, a storage barrel 18 and an electric pushing cylinder 20, and the feeding unit controls the electric pushing cylinder 20 through a controller to realize quantitative feeding of the ceramic slurry. The recovery unit comprises a residual material recovery tank 23, a fourth driving motor and a storage barrel 25, wherein the fourth driving motor drives the extrusion screw 10 in the recovery tank 23 driven by the motor to realize residual material recovery, and the residual material is conveyed to the storage barrel 25 through a guide pipe 24. The material supply barrel 18 and the material storage barrel 25 for recovering the residual materials have the same size and structure, and can be replaced mutually. The laser scanning mechanism includes a laser 21 and a scanning galvanometer assembly 22. The controller comprises a sensing feedback unit and a mechanical motion control unit, the laser 21 is arranged above the forming platform 1, and the scanning galvanometer assembly 22 is provided with a plurality of lasers for projecting the lasers to the forming platform 1.
Specifically, a schematic diagram of a hardware system of a 3D forming printer for a ceramic blank is shown in fig. 3. The mechanical motion of lifting feeding, spreading, receiving feeding and the like of the forming platform is controlled by a motion controller, and a limit switch is arranged in the motion process to carry out corresponding protection. And the laser is used for realizing the motion of the XY galvanometer system and the power regulation of the ultraviolet beam, and finally realizing the scanning operation of the ultraviolet beam on a forming plane. The matching work of the forming platform, the spreading mechanism and the laser scanning mechanism is realized through the controller. The sensor feedback unit transmits the acquired information to the controller, and the controller feeds back compensation and correction information to each mechanism after calculation processing.
Specifically, level sensor locates 1 surface of shaping platform for detect the height of thick liquids (liquid form), with the liquid level height signal input controller that detects, on the one hand export the controller display screen after the controller analysis processes and show current liquid level value, on the one hand respectively output control signal for motion control ware, realize going up and down to feed, the regulation and the control that stone and feed fed. The laser power detection sensor is arranged on the surface of the forming platform 1 or the surface of the optical platform 16 (the distance from the forming platform is set), a measured power signal is transmitted to the controller, the controller is a programmable PLC (programmable logic controller), after the controller analyzes and processes, on one hand, the measured power signal is output to the display screen to display the current laser power, on the other hand, a control signal is output to the laser controller, and the laser power is adjusted and controlled.
In order to overcome the defects of the prior art, the invention also provides a second embodiment: a use method of a 3D printer capable of realizing precision forming of a ceramic part blank comprises the following steps:
1) inputting the information of the parts into a controller, returning the scraping plate 7 to the right origin of the forming platform 1, and descending the forming platform 1 by one layer thickness (10-500 μm).
2) According to the calculation and control of the controller, the electric push rod 20 drives the extrusion head 19 to work so as to send the ceramic slurry in the feed barrel 18 into the material spreading barrel 6, and the second driving motor 8 drives the extrusion screw rod 10 to operate so as to uniformly distribute the slurry in the material spreading barrel.
3) The third driving mechanism (servo motor) 13 operates to drive the scraper 7 and the spreading cylinder 6 to move leftwards (1-100 mm/s). Meanwhile, the second driving mechanism (servo motor) 8 continues to operate to drive the extrusion screw 10, so that the ceramic slurry in the material spreading barrel is extruded to the forming platform 1 through a gap at the lower part of the material spreading barrel and is uniformly spread under the action of the material scraping plate 7.
4) The laser controller controls the laser 21 and the galvanometer system 22 to work according to the generated numerical control code, so as to complete the contour scanning and curing of the current layer of the part, the fourth drive motor drives the screw to move, and redundant materials are conveyed to the storage barrel 25 through the recovery tank 23.
5) After the scanning is finished, the forming platform 1 descends by one layer thickness (10-500 microns), and meanwhile, the electric pushing rod 20 extrudes the charging basket 18 to supply materials to the material spreading barrel 6.
6) The servo motor 13 rotates reversely to enable the spreading cylinder 6 and the scraping plate 7 to move towards the right side, and meanwhile, the extrusion screw 10 acts to extrude the slurry to the working platform and spread the slurry under the action of the scraping plate.
7) And the laser controller controls the laser 21 and the galvanometer system 22 to work according to the generated numerical control code, so that the contour scanning and curing of the local layer of the part are completed, and a cycle process is completed.
And (3) lowering the lifting platform by a distance of two layer thicknesses in each circulation process, namely finishing the processing of information of two adjacent sheet layers in each circulation process, and repeating the circulation process to finish the 3D printing of the whole part blank. Furthermore, the result of the liquid level detection of each layer can be fed back to the controller, and then the forming platform is lifted and fed, and the relative mechanical motion such as feeding and feeding is correspondingly corrected and compensated, and finally the uniform laying of each layer of ceramic slurry is realized. Furthermore, the ceramic blank is subjected to degreasing and sintering processes to finally obtain the high-precision ceramic part.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
(1) the forming platform provided by the invention is lifted through the servo motor and the linear module, has high movement precision, is provided with the magnetic grid ruler and the sensor, realizes height detection and compensation in the part manufacturing direction, and realizes accurate response of an extremely small layer thickness (10-500 microns).
(2) The forming platform realizes scraping movement in the horizontal direction through the servo motor and the linear module, has a large movement speed adjustable range (0-100 mm/s), can realize uniform layering of slurry with different viscosities through movement speed adjustment according to shearing thinning behavior of viscous fluid, and finally realizes application of different types of ceramic slurry in the invention.
(3) The invention designs an intelligent auxiliary material system which comprises a material spreading barrel unit, a feeding unit and a recovery unit. Wherein spread feed cylinder unit and feed unit can realize supplying as required of thick liquids according to the setting of the different layer thicknesses of part, and further, the controller can supply and lay the motion to the thick liquids and correct, compensate according to the liquid level testing result. And the recovery unit realizes automatic recovery and secondary utilization of residual ceramic slurry, and saves production cost. In general, the invention has higher automation degree, improves the 3D printing precision of the ceramic parts, is suitable for forming various ceramic materials, and has important significance for solving the manufacturing problem of the ceramic parts with complex shapes.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. The utility model provides a can realize 3D printer of ceramic part base body precision forming which characterized in that includes: a forming table for receiving a slurry;
the bottom of the forming platform is provided with a platform lifting mechanism which can drive the forming platform to move up and down;
the spreading mechanism comprises a spreading cylinder unit, the spreading cylinder unit comprises a spreading cylinder, a rotatable extruding screw rod is arranged in the spreading cylinder, and an outlet facing the forming platform is arranged at the bottom of the spreading cylinder;
the horizontal moving mechanisms are arranged on two sides of the forming platform, a scraping plate is arranged between the horizontal moving mechanisms and is arranged below the material spreading barrel or below the material spreading barrel, two sides of the material spreading barrel are respectively arranged on the horizontal moving mechanisms to drive the material spreading barrel to move horizontally, and the scraping plate is driven by the movement of the material spreading barrel to spread slurry;
the controller is respectively and independently connected with the spreading mechanism and the horizontal moving mechanism;
the surface of the forming platform is also provided with a liquid level sensor, and the liquid level sensor is connected with a controller;
the platform lifting mechanism comprises two groups of vertical linear modules, a first driving motor is arranged between the two groups of vertical linear modules, and the first driving motor drives the vertical linear modules to move up and down through meshing gears;
the extruding lead screw is connected with a second driving motor through a coupler;
the horizontal moving mechanism is a horizontal linear module which is connected with a third driving motor;
the vertical linear module is provided with a magnetic grid ruler, and the sensor realizes real-time detection of the liquid level height through detecting the magnetic grid ruler;
the spreading mechanism further comprises a feeding unit, the feeding unit comprises a feeding barrel, the feeding barrel is connected with a feeding hole of the spreading barrel, an extrusion head is arranged at the top of the feeding barrel, and the extrusion head is connected with the electric pushing cylinder;
the forming platform is provided with a residue recovery tank, and the bottom of the residue recovery tank is connected with a residue recovery barrel through a guide pipe.
2. The 3D printer capable of realizing the precise forming of the ceramic part blank according to claim 1, characterized by further comprising a laser scanning mechanism, wherein the laser scanning mechanism comprises a laser and a scanning galvanometer component, and laser emitted by the laser passes through the scanning galvanometer component and is projected onto the forming platform to perform contour scanning and curing on each layer of the part.
3. The 3D printer capable of realizing the precise forming of the ceramic part blank according to claim 1, wherein the feed barrel is fixed on an optical platform through a bracket, and the optical platform is supported on two sides of the forming platform through a machine body.
4. The 3D printer capable of realizing the precise forming of the ceramic part blank according to claim 3, wherein the scraper plate is perpendicular to the forming platform, and the height of the optical platform is adjustable.
5. The use method of the 3D printer capable of realizing the precise forming of the ceramic part blank according to any one of the claims 1-4, is characterized by comprising the following steps:
1) inputting the information of the part into a controller, returning the spreading mechanism to the right origin of the forming platform, and descending the forming platform by one layer thickness;
2) under the control of the controller, the slurry is uniformly distributed in the material spreading cylinder under the operation of the material extruding screw rod in the material spreading mechanism;
3) the horizontal moving mechanism drives the material spreading barrel and the material scraping plate to move towards the left side, and meanwhile, the slurry is spread on the forming platform through an outlet of the material spreading barrel;
4) laser emitted by the laser passes through the scanning galvanometer component and then is projected onto the forming platform to carry out contour scanning solidification on each layer of the part;
5) the horizontal moving mechanism moves, and the redundant slurry is sent to the recovery tank through the scraper plate;
6) after the step 5), the platform lifting mechanism descends one layer thick, and the horizontal moving mechanism drives the spreading mechanism to return to the original position;
7) laying the cylinder and repeating the steps 2) to 6).
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| CN201710487550.4A CN107053429B (en) | 2017-06-23 | 2017-06-23 | 3D printer and method capable of achieving precise forming of ceramic part blank |
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| CN201710487550.4A CN107053429B (en) | 2017-06-23 | 2017-06-23 | 3D printer and method capable of achieving precise forming of ceramic part blank |
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| CN107053429B true CN107053429B (en) | 2020-05-05 |
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| CN112060271A (en) * | 2020-08-05 | 2020-12-11 | 江苏乾度智造高科技有限公司 | Full-automatic high-precision 3D printing method for photocuring ceramic |
| CN112060274B (en) * | 2020-09-30 | 2021-08-17 | 重庆康维鑫智能科技有限责任公司 | Ceramic 3D printer based on laser three-dimensional photocuring molding technology |
| CN114378917B (en) * | 2021-12-23 | 2024-01-05 | 集美大学 | Large-format slurry 3D printing method capable of adjusting liquid level |
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| US9944021B2 (en) * | 2012-03-02 | 2018-04-17 | Dynamic Material Systems, LLC | Additive manufacturing 3D printing of advanced ceramics |
| CN103111756B (en) * | 2013-02-05 | 2015-09-09 | 余振新 | The laser optical path guidance system of laser sintering and moulding equipment |
| CN104669401A (en) * | 2013-11-28 | 2015-06-03 | 西安中科麦特电子技术设备有限公司 | 3D printer using ceramic as raw material |
| JP2016064963A (en) * | 2014-09-26 | 2016-04-28 | Toto株式会社 | Ceramic molding and method for producing the same |
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