CN110421843B - Acoustic emission gas-liquid interface photocuring three-dimensional forming device and method - Google Patents
Acoustic emission gas-liquid interface photocuring three-dimensional forming device and method Download PDFInfo
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- CN110421843B CN110421843B CN201910769017.6A CN201910769017A CN110421843B CN 110421843 B CN110421843 B CN 110421843B CN 201910769017 A CN201910769017 A CN 201910769017A CN 110421843 B CN110421843 B CN 110421843B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The invention relates to a light-cured three-dimensional forming device and method for a sound emission gas-liquid interface. The device comprises a rigid frame, wherein a top plate is arranged at the top of the rigid frame, a liquid tank is arranged in the rigid frame, a photosensitive liquid polymer material is arranged in the liquid tank, and an opening of the liquid tank is embedded with the top plate; a lifting platform is fixed on the top plate and connected with a forming substrate, the forming substrate can move up and down in the liquid tank under the driving of the lifting platform, and a photocuring three-dimensional forming body is arranged on the forming substrate; the base of the six-degree-of-freedom mechanical arm is fixed on the top plate, the tail end of the six-degree-of-freedom mechanical arm is connected with the acoustic emission light scanning head, and the six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to perform space scanning movement in the liquid tank. The invention has the beneficial effects that: the invention has reasonable structure, convenient use and good effect. After the tire burst happens, the tire can be put into use within one minute, so that a user can push the tire easily, the rolling of the inner tire, the outer tire and the steel ring is avoided in the walking process, and the damage degree of the tire is protected from being increased.
Description
Technical Field
The invention relates to the field of three-dimensional printing, in particular to a light-cured three-dimensional forming device and method for a sound emission gas-liquid interface.
Background
The photocuring three-dimensional forming technology adopts light with specific wavelength to selectively excite photosensitive resin according to regions to carry out curing reaction to obtain single-layer patterned cured material, and realizes accumulation from the single-layer patterned cured material to a complex three-dimensional body through continuous layer-by-layer curing and interlayer bonding during curing. The existing photocuring three-dimensional forming equipment is divided into two categories of upper liquid level curing and lower liquid level curing according to different curing liquid level positions: the former exposes the upper liquid surface of the photosensitive resin liquid tank to generate single-layer condensate, and carries out accumulation solidification layer by layer through sinking of the forming substrate; the latter uses the transparent bottom of the photosensitive resin liquid tank to expose the lower liquid surface to generate a single-layer condensate, and carries out layer-by-layer accumulative solidification through the upward floating of the forming substrate until a complete three-dimensional body is formed.
On the other hand, with the continuous development and maturity of the additive technology and the application scenario thereof, the requirements of the additive application on the forming efficiency, the forming precision and the forming fineness of the photocuring three-dimensional forming equipment are more and more strict, which brings a severe technical challenge to the traditional upper liquid surface photocuring and lower liquid surface photocuring equipment, and mainly originates from: in the upper liquid level photocuring equipment, the flatness of a single-layer cured substance is influenced by the liquid level stability, the dimensional accuracy and the edge definition of the single-layer cured substance are influenced by the liquid level stability, and the control difficulty and the realization cost of the liquid level stability and the liquid level stability of a photosensitive resin liquid tank are higher; in the lower liquid surface photocuring equipment, when a single-layer cured product is stripped from a transparent bottom film of a liquid tank, the problems of stripping damage, stripping failure and the like are easily induced by strong solid-solid interface adhesion, and further forming defects and even forming failure are caused. The problems of liquid level stability and solid-solid interface stripping are essentially closely related to an upper liquid surface photocuring forming mode and a lower liquid surface photocuring forming mode, so that the dependence of photocuring three-dimensional forming on the upper liquid surface and the lower liquid surface is not fundamentally eliminated, and the obstruction of the existing photocuring equipment in the direction of further improving the performance is difficult to fundamentally overcome. In addition, most of the existing light curing equipment adopts a forming mode of whole-surface exposure and whole-surface curing, and when the photosensitive resin is cured from a liquid state, the volume shrinkage of the photosensitive resin can cause complex stress deformation, so that the three-dimensional forming precision is reduced, and even the cured product is cracked, so that the forming failure is caused. At present, aiming at the urgent need of further improving the efficiency, precision and fineness of photocuring three-dimensional forming, a photocuring three-dimensional forming method which does not depend on the state of an upper liquid surface or a lower liquid surface, and has low curing forming stress, low stripping force and even no need of stripping is also lacked.
Disclosure of Invention
The present invention is to solve the above-mentioned drawbacks of the prior art, and provides a light-curable three-dimensional forming apparatus and method with a gas-liquid interface for acoustic emission, which can directly expose a liquid tank to light to form a cured product without a solid imaging interface, and the formed cured product is only attached to the surface of a formed substrate or a cured product on the surface of the previous layer.
The invention adopts the technical scheme for solving the technical problems that: the device comprises a rigid frame, wherein a top plate is arranged at the top of the rigid frame, a liquid tank is arranged in the rigid frame, a photosensitive liquid polymer material is arranged in the liquid tank, and an opening of the liquid tank is embedded with the top plate; a lifting platform is fixed on the top plate and connected with a forming substrate, the forming substrate can move up and down in the liquid tank under the driving of the lifting platform, and a photocuring three-dimensional forming body is arranged on the forming substrate; the base of the six-degree-of-freedom mechanical arm is fixed on the top plate, the tail end of the six-degree-of-freedom mechanical arm is connected with the acoustic emission light scanning head, and the six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to perform space scanning movement in the liquid tank.
Preferably, the acoustic emission light scanning head comprises a hollow shell, the high-frequency directional acoustic wave emitting element array and the directional light curing light source are positioned at the bottom of a cavity of the hollow shell, and the directional light curing light source is positioned in the central area of the high-frequency directional acoustic wave emitting element array; the power supply and the control signal wire harness are connected with the high-frequency directional acoustic wave emitting element array and the directional light curing light source and are led out of the sound emission light scanning head from the sealing hole at the tail part of the hollow shell; the head of the hollow shell is provided with a light outlet.
Preferably, the light curing controller is respectively connected with the lifting platform, the six-degree-of-freedom mechanical arm and the acoustic emission light scanning head.
A light-curing three-dimensional forming method for a sound emission gas-liquid interface comprises the following steps: the six-degree-of-freedom mechanical arm drives the acoustic emission optical scanning head to carry out scanning and curing on the current layer, and a local single-layer cured object generated by the scanned part of the current layer is attached to the surface of the cured object; the six-degree-of-freedom mechanical arm drives the acoustic emission optical scanning head to densely scan line by line along the edge of a local single-layer cured object in an unscanned area according to the surface shape of the cured object; in the scanning process, light beams emitted by the acoustic emission light scanning head continuously move to form linear cured objects on the surfaces of the cured objects, the linear cured objects and the local single-layer cured objects generated by the scanned parts are closely arranged, so that the areas of the local single-layer cured objects are continuously expanded, and after the six-degree-of-freedom mechanical arm drives the acoustic emission light scanning head to complete the scanning area of the layer, the generated cured objects of the layer are completely attached to the surfaces of the cured objects.
Before light curing is started, a light curing controller firstly sends a displacement signal to a six-degree-of-freedom mechanical arm, the six-degree-of-freedom mechanical arm is controlled to drive a sound emission light scanning head to move out of a liquid tank, and then a light-sensitive liquid high polymer material is injected into the liquid tank; the photocuring controller sends a sinking signal to the lifting platform, and the lifting platform is controlled to drive the forming substrate to be immersed into the photosensitive liquid polymer material in the liquid tank; the light-curing controller generates a light source closing signal and an acoustic emission signal to the acoustic emission light scanning head, and controls the acoustic emission light scanning head to close the light-curing light source and open the acoustic emission element; the light curing controller sends a space coordinate positioning signal and a space attitude positioning signal to the six-degree-of-freedom mechanical arm, and the six-degree-of-freedom mechanical arm is controlled to drive the acoustic emission light scanning head to move towards the initial point of the first-layer scanning area, so that the acoustic emission light scanning head points to and approaches the forming substrate at a set attitude angle until the thickness of the photosensitive liquid polymer material between the acoustic emission light scanning head and the forming substrate is the single-layer curing thickness.
When the first layer of light curing is carried out, the light curing controller sends a scanning path instruction to the six-degree-of-freedom mechanical arm, the six-degree-of-freedom mechanical arm is controlled to drive the acoustic emission light scanning head, and scanning light curing is carried out according to a path defined by the first layer of light curing patterns; the light curing controller sends out a light switch control signal to the sound emission light scanning head to control the on or off of a light source in the sound emission light scanning head: when the real-time scanning path enters the light curing pattern bright area, the light source is switched on, and when the real-time scanning path is separated from the light curing pattern bright area, the light source is switched off; the light curing controller sends out a brightness adjusting signal to the sound emission light scanning head, controls a light source in the sound emission light scanning head, and dynamically adjusts the brightness of the light source in the sound emission light scanning head according to parameters such as scanning speed, spot size, single-layer curing thickness, exposure energy of a photosensitive liquid polymer material and the like so as to meet the requirements of a scanning light curing process; the light curing controller sends out an acoustic emission signal to the acoustic emission light scanning head, and the acoustic emission state of an acoustic emission element in the acoustic emission scanning head is maintained in the whole scanning light curing process.
In the first layer of photocuring scanning process, a sound emission element in a sound emission light scanning head emits high-frequency directional sound waves which act on the liquid surface of the photosensitive liquid polymer material outside a light outlet, the sound waves impact the liquid surface to form sound pressure so that the liquid surface is sunken and deformed, the sound waves and liquid surface reflection echoes are interfered to generate standing waves, and the standing waves further form an energy-intensive air shield at the light outlet; the liquid level of the photosensitive liquid polymer material outside the light outlet forms a vacuole structure with a stable state under the combined action of the sound pressure concave deformation and the air shield; the directional light beam emitted by a light source in the acoustic emission light scanning head passes through the light outlet and then irradiates on the photosensitive liquid polymer material in the cavity central area, the irradiated area is excited to carry out photocuring reaction, and a cured substance generated by the photocuring reaction is only attached to the forming substrate and has no solid-solid bonding interface with the light outlet; after the six-degree-of-freedom mechanical arm drives the acoustic emission light scanning head to complete the first-layer photocuring path scanning, a formed cured substance with the shape consistent with that of the photocuring pattern is directly attached to the forming substrate.
When the subsequent layer is photocured, the photocuring controller firstly sends a displacement signal to the six-degree-of-freedom mechanical arm, and controls the six-degree-of-freedom mechanical arm to drive the acoustic emission optical scanning head to avoid the cured object and move to the initial point of the scanning area of the current layer, so that the acoustic emission optical scanning head approaches the cured object at a set attitude angle until the thickness of the photosensitive liquid polymer material between the light outlet and the cured object is a single-layer curing thickness; the post-photocuring controller sends a current layer scanning path to the six-degree-of-freedom mechanical arm, controls the six-degree-of-freedom mechanical arm to drive the acoustic emission light scanning head, and performs scanning photocuring according to a current layer photocuring pattern; after the six-degree-of-freedom mechanical arm drives the acoustic emission light scanning head to complete the scanning of the photocuring path of the current layer, the generated cured object of the current layer is attached to the surface of the cured object; the curing process is carried out layer by layer, and a single-layer cured material and a cured material generated by scanning photocuring of each layer are accumulated layer by layer until a complete photocuring three-dimensional forming body is formed.
The acoustic emission light scanning head is internally provided with a high-frequency directional acoustic emission element and a directional light curing light source, wherein a high-frequency sound beam emitted by the high-frequency directional acoustic emission element is overlapped with an optical beam axis emitted by the directional light curing light source and is emitted to the outside through a light outlet of the acoustic emission light scanning head; the light outlet of the acoustic emission light scanning head adopts a small hole structure, a directional sound beam emitted by a high-frequency directional acoustic emission element passes through the small hole of the light outlet and acts on the liquid level of an external photosensitive liquid polymer material, and sound pressure and standing waves jointly act outside the light outlet to form a stable-state cavitation structure; the acoustic emission light scanning head of the invention orients the light wave beam emitted by the light curing light source, passes through the small hole of the light outlet and irradiates on the photosensitive liquid polymer material in the central area of the cavity, and excites the area to carry out the light curing reaction and generate a cured substance; the light beam emitted by the directional light curing light source irradiates on a photosensitive liquid polymer material through a gas-liquid interface, and a solid-gas interface rather than a solid-solid bonding state is formed between a cured product generated by a light curing reaction and the acoustic emission light scanning head; according to the acoustic emission light scanning head, a condensate generated by light beam irradiation is positioned outside the small hole of the light outlet, and when the six-degree-of-freedom mechanical arm drives the acoustic emission light scanning head to move transversely and continuously scan and perform photocuring, the condensate does not need to be stripped from the light outlet, and the condensate does not invade or block the small hole of the light outlet.
The six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to scan light curing along any non-interference space path in a photosensitive liquid polymer material in the liquid tank, so that the light curing can be performed layer by layer on a planar forming substrate according to a constant single-layer curing thickness, and the light curing can be performed on solid surfaces such as a free-form surface forming substrate and a cured object along the surface contour of the solid surfaces to generate a free-form surface single-layer cured object; the six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to perform photocuring layer by layer along the non-gravity direction, so that a gravity supporting structure can be eliminated, and the six-degree-of-freedom mechanical arm can be used for generating a complex fine structure; the six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to perform light curing layer by layer along the direction favorable for structural strength, and is favorable for generating a light-cured three-dimensional forming body with better directional structural strength; the six-degree-of-freedom mechanical arm can drive the acoustic emission light scanning head to change the scanning speed and the light source brightness in real time so as to generate a single-layer cured object with flexibly adjustable thickness distribution, and further dynamically adjust the layer-by-layer accumulation direction in the layer-by-layer photocuring process.
In the invention, the light beam emitted by the directional light curing light source does not need to penetrate through a solid medium, and only directly irradiates on the photosensitive liquid polymer material through a gas-liquid interface, so that the energy utilization rate of the light source is high; according to the acoustic emission gas-liquid interface photocuring three-dimensional forming method, a cured substance generated by photocuring reaction is directly attached to the surface of a target object, stripping from an acoustic emission light scanning head is not needed, the cured substance is free of stripping damage, and the forming speed is high; the acoustic emission gas-liquid interface photocuring three-dimensional forming method has the advantages that the layer-by-layer curing direction is flexible and adjustable, the three-dimensional forming flexibility is high, and the formed body has good mechanical properties;
the lifting workbench is only used for immersing the forming substrate into the photosensitive liquid polymer material in the liquid tank before photocuring is started, and lifting the three-dimensional forming body and the forming substrate out of the liquid tank after photocuring is finished, and all precision motions in the layer-by-layer scanning photocuring process are realized by the six-free mechanical arm; the invention has reasonable scheme and good photocuring three-dimensional forming effect, and is easy to popularize and apply in high-precision and high-performance photocuring three-dimensional forming equipment.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a perspective view of the general construction of the present invention;
FIG. 3 is a schematic diagram of the structure of an acoustic emission light scanning head;
FIG. 4 is a schematic view of single layer scanning photocuring;
FIG. 5 is a top view of a fluid bath during single-layer scanning photocuring;
FIG. 6 is a control signal connection diagram of the present invention;
description of reference numerals: the device comprises a rigid frame 1, a top plate 2, a liquid tank 3, a photosensitive liquid polymer material 4, a lifting platform 5, a forming substrate 6, a photocuring three-dimensional forming body 7, a six-degree-of-freedom mechanical arm 8, an acoustic emission light scanning head 9, a hollow shell 901, a power supply and control signal wire harness 902, a high-frequency directional acoustic wave emitting element array 903, a directional photocuring light source 904, a sealing hole 905, a light outlet hole 906, a cavity 907, a cured object 908, a cured object 10, a local single-layer cured object 11, a linear cured object 12 and a photocuring controller 20.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
example (b): a light-cured three-dimensional forming device for acoustic emission gas-liquid interface is disclosed, as shown in figures 1 and 2, a top plate 2 is arranged on the top of a rigid frame 1, a liquid tank 3 is arranged in the rigid frame 1, a photosensitive liquid high polymer material 4 is arranged in the liquid tank 3, and the opening of the liquid tank 3 is embedded on the top plate 2; the lifting platform 5 is fixed on the top plate 2, the lifting platform 5 is connected with the forming substrate 6, the forming substrate 6 can be driven by the lifting platform 5 to be immersed in the photosensitive liquid polymer material 4 or lifted out of the liquid tank 3, and the forming substrate 6 is provided with a photocuring three-dimensional forming body 7; the base of the six-degree-of-freedom mechanical arm 8 is fixed on the top plate 2, the tail end of the six-degree-of-freedom mechanical arm 8 is connected with the acoustic emission light scanning head 9, the six-degree-of-freedom mechanical arm 8 can drive the acoustic emission light scanning head 9 to move out of the liquid tank 3 and can also drive the acoustic emission light scanning head 9 to be not exposed to the photosensitive liquid polymer material 4 and to perform space scanning movement in the photosensitive liquid polymer material 4; the first layer of scanning surface formed by the space scanning motion of the acoustic emission light scanning head 9 is matched with the surface shape of the forming substrate 6, and the other layer of scanning surface is matched with the cross section shape of each curing layer of the light-cured three-dimensional forming body 7.
As shown in fig. 3, the acoustic emission light scanning head 9 is composed of a hollow housing 901, a power supply and control signal line bundle 902, a high-frequency directional acoustic wave emitting element array 903, and a directional light-curing light source 904; the high-frequency directional acoustic wave emitting element array 903 and the directional light curing light source 904 are positioned at the bottom of the cavity of the hollow shell 901, and the directional light curing light source 904 is positioned in the central area of the high-frequency directional acoustic wave emitting element array 903; a power supply and control signal wire harness 902 is connected with the high-frequency directional acoustic wave emitting element array 903 and the directional light curing light source 904 and is led out of a sealing hole 905 at the tail part of the hollow shell 901 to the outside of the acoustic emission light scanning head 9; the high-frequency directional sound wave emitting element array 903 emits high-frequency directional sound wave beams, the high-frequency directional sound wave beams penetrate through a light outlet 906 in the head of the hollow shell 901 and act on the liquid level of the photosensitive liquid high polymer material 4 outside the light outlet 906 to form vacuoles 907; the directional light beam emitted by the directional light curing light source 904 passes through the light outlet 906 and irradiates on the photosensitive liquid polymer material 4 in the central region of the vacuole 907 to excite the region to perform a light curing reaction and form a cured material 908, and the cured material 908 is positioned outside the light outlet 906 and has no solid-solid bonding interface with the acoustic emission light scanning head 9.
As shown in fig. 6, the light curing controller 20 is connected with the lifting platform 5, the light curing controller 20 is connected with the six-degree-of-freedom mechanical arm 8, and the light curing controller 20 is connected with the acoustic emission light scanning head 9; the light curing controller 20 sends an electric signal to the lifting platform 5 to control the lifting platform 5 to drive the forming substrate 6 to be immersed into the photosensitive liquid polymer material 4 of the liquid tank 3 before light curing, and drive the forming substrate 6 and the light-cured three-dimensional forming body 7 to be lifted out of the liquid tank 3 after light curing; the light curing controller 20 sends an electric signal to the six-degree-of-freedom mechanical arm 8 to control the six-degree-of-freedom mechanical arm 8 to drive the acoustic emission light scanning head 9, the acoustic emission light scanning head is moved out of the liquid tank 3 before and after the light curing is started, and the scanning light curing is carried out according to the scanning path of each layer in the light curing process; the light curing controller 20 sends an electrical signal to the acoustic emission light scanning head 9 to control the acoustic emission light scanning head 9 to maintain the acoustic emission of the high-frequency directional acoustic wave emitting element array 903 during the whole light curing process, and control the directional light curing light source 904 to maintain the directional light beam emission in the scanning light curing area.
A three-dimensional forming method of acoustic emission gas-liquid interface photocuring is disclosed, as shown in figures 4 and 5, a formed substrate 6 is provided with a cured object 10, a six-degree-of-freedom mechanical arm 8 drives an acoustic emission light scanning head 9 to carry out scanning curing of a current layer, and a local single-layer cured object 11 generated by a scanned part of the current layer is attached to the surface of the cured object 10; the six-degree-of-freedom mechanical arm 8 drives the acoustic emission optical scanning head 9 to densely scan line by line along the edge of a local single-layer cured product 11 in an unscanned area according to the surface shape of the cured product 10; in the scanning process, the light beam emitted by the acoustic emission light scanning head 9 continuously moves, a linear cured object 12 is formed on the surface of the cured object 10, the linear cured object 12 and the local single-layer cured object 11 generated by the scanned part are closely arranged, so that the area of the local single-layer cured object 11 is continuously expanded, and after the six-degree-of-freedom mechanical arm 8 drives the acoustic emission light scanning head 9 to complete the scanning area of the local single-layer cured object, the generated cured object of the local layer is completely attached to the surface of the cured object 10.
The acoustic emission light scanning head can also adopt a mode of arranging multiple beams into a one-dimensional and two-dimensional array so as to improve the light energy and the exposure efficiency in the photocuring process; the six-degree-of-freedom mechanical arm can also drive a plurality of acoustic emission light scanning heads simultaneously so as to further improve the scanning light curing speed; the liquid tank can be also provided with a plurality of independent or cooperative six-degree-of-freedom mechanical arms, and simultaneously and concurrently carries out photocuring three-dimensional forming on a plurality of same parts or simultaneously cooperates to finish photocuring three-dimensional forming on a single large part so as to meet the production requirements of batches or large single parts.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides an acoustic emission gas-liquid interface photocuring three-dimensional forming device, includes rigid frame (1), characterized by: a top plate (2) is arranged at the top of the rigid frame (1), a liquid tank (3) is arranged in the rigid frame (1), a photosensitive liquid polymer material (4) is arranged in the liquid tank (3), and an opening of the liquid tank (3) is embedded with the top plate (2); a lifting platform (5) is fixed on the top plate (2), the lifting platform (5) is connected with a forming substrate (6), the forming substrate (6) can move up and down in the liquid tank (3) under the drive of the lifting platform (5), and a photocuring three-dimensional forming body (7) is arranged on the forming substrate (6); the base of six-degree-of-freedom mechanical arm (8) is fixed on top plate (2), the tail end of six-degree-of-freedom mechanical arm (8) is connected with acoustic emission light scanning head (9), six-degree-of-freedom mechanical arm (8) can drive acoustic emission light scanning head (9) to do space scanning motion in liquid bath (3), acoustic emission light scanning head (9) includes hollow shell (901), high-frequency directional acoustic wave emitting element array (903), directional light curing light source (904) are located the cavity bottom of hollow shell (901), hollow shell (901) head is equipped with light outlet (906).
2. The acoustic emission gas-liquid interface photocuring three-dimensional forming device of claim 1, wherein: the directional light curing light source (904) is positioned in the central area of the high-frequency directional acoustic wave emitting element array (903); and a power supply and control signal wire harness (902) is connected with the high-frequency directional acoustic wave emitting element array (903) and the directional light curing light source (904) and is led out of a sealing hole (905) at the tail part of the hollow shell (901) to the outside of the acoustic emission light scanning head (9).
3. The acoustic emission gas-liquid interface photocuring three-dimensional forming device according to claim 1 or 2, characterized in that: the light curing controller (20) is respectively connected with the lifting platform (5), the six-degree-of-freedom mechanical arm (8) and the acoustic emission light scanning head (9).
4. A light-curing three-dimensional forming method for an acoustic emission gas-liquid interface by adopting the device of claim 1, comprising the following steps: the six-degree-of-freedom mechanical arm (8) drives the acoustic emission optical scanning head (9) to carry out scanning and curing on the current layer, and a local single-layer cured object (11) generated by the scanned part of the current layer is attached to the surface of the cured object (10); the six-degree-of-freedom mechanical arm (8) drives the acoustic emission optical scanning head (9) to densely scan line by line along the edge of the local single-layer cured object (11) according to the surface shape of the cured object (10) in an area which is not scanned; in the scanning process, a light beam emitted by the acoustic emission light scanning head (9) continuously moves, a linear cured object (12) is formed on the surface of the cured object (10), the linear cured object (12) and a local single-layer cured object (11) generated by a scanned part are closely arranged, so that the area of the local single-layer cured object (11) is continuously expanded, and after the six-degree-of-freedom mechanical arm (8) drives the acoustic emission light scanning head (9) to complete the scanning area of the local layer, the generated cured object of the local layer is completely attached to the surface of the cured object (10).
Priority Applications (1)
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| JP5951672B2 (en) * | 2014-03-31 | 2016-07-13 | 株式会社東芝 | Laminate manufacturing apparatus and manufacturing method |
| GB201510220D0 (en) * | 2015-06-11 | 2015-07-29 | Renishaw Plc | Additive manufacturing apparatus and method |
| CN105172141A (en) * | 2015-09-10 | 2015-12-23 | 杜晖 | Photosensitive resin 3D printer taking LED array as light source |
| US10857726B2 (en) * | 2017-01-24 | 2020-12-08 | Continuous Composites Inc. | Additive manufacturing system implementing anchor curing |
| CN107097419A (en) * | 2017-06-13 | 2017-08-29 | 东莞理工学院 | The intelligent production line of photocuring 3D printing based on six axis robot |
| CN207415986U (en) * | 2017-11-10 | 2018-05-29 | 镇江擎智光电科技有限公司 | A kind of sextuple internal photocuring 3D printing equipment |
| CN108312518B (en) * | 2018-03-05 | 2024-03-08 | 匡津永 | Internal three-dimensional direct photo-curing forming 3D printing equipment and control method thereof |
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Application publication date: 20191108 Assignee: Fujian Anshi Jiuxin Digital Technology Co.,Ltd. Assignor: HANGZHOU DEDI INTELLIGENT TECHNOLOGY Co.,Ltd. Contract record no.: X2023980049318 Denomination of invention: A three-dimensional forming device and method for acoustic emission gas-liquid interface photocuring Granted publication date: 20210615 License type: Exclusive License Record date: 20231201 |