CN110871570A - Fixed 3D printing device in liquid groove - Google Patents
Fixed 3D printing device in liquid groove Download PDFInfo
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- CN110871570A CN110871570A CN201811000338.1A CN201811000338A CN110871570A CN 110871570 A CN110871570 A CN 110871570A CN 201811000338 A CN201811000338 A CN 201811000338A CN 110871570 A CN110871570 A CN 110871570A
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- liquid level
- level control
- control module
- printing
- liquid
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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
- 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
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a liquid tank fixed type 3D printing device which comprises an upper projection optical machine, a liquid tank, a 3D printing platform, a printing platform lifting mechanism, a liquid level control module and a liquid level control module lifting mechanism, wherein photosensitive resin is injected into the liquid tank, the position of the liquid level control module in the vertical direction can be flexibly adjusted through the liquid level control module lifting mechanism, and then the working distance between the liquid level and an optical machine is accurately positioned to ensure that the optical machine projects clear patterns on the liquid level.
Description
Technical Field
The invention relates to a liquid tank fixed type 3D printing device.
Background
The 3D printing technology is also called additive manufacturing, and has the obvious advantages of realizing the manufacturing of a complex structure, simplifying production procedures, shortening manufacturing period and the like, so that the method is widely applied to the fields of medical treatment, scientific research, aerospace, automobile part manufacturing and the like. SLA and 3D printing technique based on DMD chip are two kinds of commonly used 3D printing techniques, and these two kinds of techniques can realize the 3D of high accuracy, complicated structure part and print in liquid photopolymer, and the material high-usage. And the 3D printing technology based on the LCOS chip and the 3D printing technology based on the Micro LED technology are different from the traditional SLA and the 3D printing technology based on the DMD chip, and higher printing precision, higher printing speed, lower cost and larger breadth can be realized.
In 3D printing of the upper projection, in order to meet different printing accuracy and breadth, the upper projection optical machine is often an adjustable optical machine with magnification or reduction ratio. And the working distance between the projection light machine and the projection working surface is inevitably changed when the magnification or the reduction ratio is adjusted. The working distance between the projection optical machine and the projection working surface can be conveniently adjusted through the movement of the liquid level control module in the vertical direction. Therefore, the projection pattern can be ensured to project clear images on the liquid level, namely the projection working surface.
The invention also has the advantage that the workpiece on the printing platform needs to be removed at the end of printing. If the liquid level control module is fixed, the workpiece on the printing platform is difficult to take down because the liquid level control module cannot move and generates path resistance to the movement of the printing platform. And the liquid level control module is of a lifting type and can be lifted after printing is finished. Thus, the printing workpiece is convenient to take down.
Disclosure of Invention
The problem of working distance change between an upper projection light machine and a liquid level in a 3D printing device is solved.
The invention adopts a liquid tank fixed type 3D printing device, which comprises an upper projection optical machine (1), a liquid tank (2), a 3D printing platform (3), a printing platform lifting mechanism (4), a liquid level control module (5) and a liquid level control module lifting mechanism (6); the liquid tank (2) is located at the bottom of the 3D printing device, the upper projection optical machine (1) is located above the liquid tank (2), the 3D printing platform (3) is located inside the liquid tank (2), the printing platform lifting mechanism (4) is connected with the 3D printing platform (3), the liquid level control module (5) comprises a light-transmitting window sheet (51), a liquid level control film (52) and a fixing device (53), and the liquid level control module lifting mechanism (6) is connected with the liquid level control module (5); photosensitive resin is injected into the liquid tank, the position of the liquid level control module in the vertical direction can be flexibly adjusted through the liquid level control module lifting mechanism, and then the working distance between the liquid level and the optical machine is accurately positioned to ensure that the optical machine projects clear patterns on the liquid level.
The upper projection optical machine (1) comprises a projection optical machine based on a DMD chip, an optical machine based on a Micro LED, a projection optical machine based on an LCOS chip or an SLA projection optical machine, and the projection mode is a top-down projection mode; the components of the upper projection light machine (1) do not comprise a photoetching lens.
The liquid tank (2) is arranged at the bottom of the 3D printing device and cannot move in the vertical direction.
The 3D printing platform (3) is made of metal or glass, and the surface of the 3D printing platform is a plane.
And the 3D printing platform lifting mechanism (4) is used for controlling the 3D printing platform (3) to move in the vertical direction.
The liquid level control module (5) comprises a light-transmitting window sheet (51), a liquid level control film (52) and a fixing device (53); the light-transmitting window sheet (51) is arranged above the liquid level control film (52) below the liquid level control film, a closed cavity is formed between the light-transmitting window sheet (51) and the liquid level control film (52) through a fixing device (53), and an oxygen inlet (533) and an oxygen outlet (534) are arranged on the fixing device (53) to enable oxygen to flow in the closed cavity.
Fixing device (53) contain logical oxygen module (531), press from both sides membrane piece (532), oxygen entry (533), oxygen export (534), press from both sides membrane piece (532) and play the fixed effect of messenger's liquid level control membrane (52), lead to the oxygen module and play the effect that makes liquid level control membrane (52) level and smooth.
The light-transmitting window sheet (51) is a sapphire sheet, crown glass or flint glass.
The liquid level control module lifting mechanism (6) is used for controlling the liquid level control module (5) to move in the vertical direction.
The fixed 3D printing device of liquid tank, when printing include the following step:
the method comprises the following steps: injecting a resin material into the liquid bath;
step two: installing a light transmission window sheet (51) and a liquid level control film (52) on a fixing device (53) to form a liquid level control module (5);
step three: the liquid level control module (5) is connected with a liquid level control module lifting mechanism (6);
step four: the liquid level control module lifting mechanism (6) drives the liquid level control module (5) to descend, so that the liquid level control module (5) is partially immersed in the resin material in the liquid tank (2), and no air exists between the liquid level control module (5) and the resin material;
step five: 6. the liquid level control module lifting mechanism moves up and down to focus light to the lower surface of the 5.2 liquid level control film;
step six: the 3D printing platform (3) moves up and down to enable the upper surface of the 3D printing platform (3) to be attached to the lower surface of the liquid level control film (52);
step seven: the upper projection optical machine (1) performs exposure 3D printing on the resin material.
The liquid tank fixed type 3D printing device provided by the invention has the following main advantages and positive effects: the working distance between the projection optical machine and the projection working surface can be conveniently adjusted through the movement of the liquid level control module in the vertical direction. Therefore, the projection pattern can be ensured to project clear images on the liquid level, namely the projection working surface.
The invention also has the advantage that the workpiece on the printing platform needs to be removed at the end of printing. If the liquid level control module is fixed, the workpiece on the printing platform is difficult to take down because the liquid level control module cannot move and generates path resistance to the movement of the printing platform. And the liquid level control module is of a lifting type and can be lifted after printing is finished. Thus, the printing workpiece is convenient to take down. The liquid tank fixed type 3D printing device has a good application prospect in the high-precision 3D printing field.
Drawings
To further illustrate the technical content of the present invention, the following detailed description is provided in conjunction with the embodiments and the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a liquid level control module according to the present invention;
FIG. 3 is a schematic structural view of an alternative configuration of the level control module of the present invention;
FIG. 4 is a schematic structural diagram of an alternative configuration of the level control module of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Referring to the drawings, the present invention provides a liquid tank fixing type 3D printing apparatus, including:
the upper projection optical machine (1) comprises a projection optical machine based on a DMD chip, an optical machine based on a Micro LED, a projection optical machine based on an LCOS chip or an SLA projection optical machine, and the projection mode is a top-down projection mode; the components of the upper projection light machine (1) do not comprise a photoetching lens.
The liquid tank (2) is arranged at the bottom of the 3D printing device and cannot move in the vertical direction, and the bottom of the liquid tank (2) can be used as a light-transmitting window.
The 3D printing platform (3) is made of metal or glass, and the surface is a plane. Can put into metal sheet, optical glass piece, sapphire piece between 3D print platform (3) and messenger liquid level control module (5), be convenient for print the finished product and take off 3D print platform.
The liquid level control film (52) comprises a silicone adhesive film with the thickness of 0.05 mm-0.39 mm or an FEP release film with the thickness of 0.05 mm-0.39 mm.
The printing platform lifting mechanism (4) is used for controlling the 3D printing platform (3) to move in the vertical direction.
The liquid level control module (5) comprises a light-transmitting window sheet (51), a liquid level control film (52) and a fixing device (53); the light transmission window sheet (51) is arranged above the liquid level control film (52) arranged below the liquid level control film, a closed cavity is formed between the light transmission window sheet (51) and the liquid level control film (52) through a fixing device (53), an oxygen inlet (533) and an oxygen outlet (534) are formed in the fixing device (53) to enable oxygen to circulate in the closed cavity, oxygen can increase oxygen inhibition, and the service life of the liquid level control film (52) is prolonged.
The liquid level control module (5) has a plurality of structural forms, and three typical structural forms are represented in figures 2, 3 and 4 respectively.
As shown in fig. 2, the fixing device (53) comprises an oxygen introducing module (531), a film clamping member (532), an oxygen inlet (533), and an oxygen outlet (534), wherein the film clamping member (532) is used for fixing the liquid level control film (52), the oxygen introducing module (531) presses the liquid level control film (52) downwards to enable the liquid level control film (52) to protrude downwards and keep flat, and the film clamping member (532) is connected with the liquid level control module lifting mechanism (6).
As shown in fig. 3, the fixing device (53) comprises an oxygen introducing module (531), a film clamping member (532), an oxygen inlet (533), and an oxygen outlet (534), wherein the film clamping member (532) is used for fixing the liquid level control film (52), the oxygen introducing module is used for leveling the liquid level control film (52), and the film clamping member (532) is connected with the liquid level control module lifting mechanism (6).
As shown in fig. 4, the fixing device (53) comprises an oxygen supply module (531), a membrane clamping member (532), an oxygen inlet (533), and an oxygen outlet (534), the membrane clamping member (532) and a liquid level control module fixing member (535) clamp and tighten the liquid level control membrane (52), the oxygen supply module is pressed downwards to achieve the effect of leveling the liquid level control membrane (52), and the liquid level control module fixing member (535) is connected with the liquid level control module lifting mechanism (6).
The light-transmitting window plate (51) is a sapphire plate, crown glass or flint glass.
The liquid level control module lifting mechanism (6) is used for controlling the movement of the liquid level control module (5) in the vertical direction.
A liquid tank fixed type 3D printing device comprises the following steps:
the method comprises the following steps: injecting a resin material into the liquid bath;
step two: installing a light transmission window sheet (51) and a liquid level control film (52) on a fixing device (53) to form a liquid level control module (5);
step three: the liquid level control module (5) is connected with a liquid level control module lifting mechanism (6);
step four: the liquid level control module lifting mechanism (6) drives the liquid level control module (5) to descend, so that the liquid level control module (5) is partially immersed in the resin material in the liquid tank (2), and no air exists between the liquid level control module (5) and the resin material;
step five: 6. the liquid level control module lifting mechanism moves up and down to focus light to the lower surface of the 5.2 liquid level control film;
step six: the 3D printing platform (3) moves up and down to enable the upper surface of the 3D printing platform (3) to be attached to the lower surface of the liquid level control film (52);
step seven: the upper projection optical machine (1) performs exposure 3D printing on the resin material.
The invention can conveniently adjust the working distance between the projection optical machine and the projection working surface through the movement of the liquid level control module in the vertical direction. Therefore, the projection pattern can be ensured to project clear images on the liquid level, namely the projection working surface.
The invention also has the advantage that the workpiece on the printing platform needs to be removed at the end of printing. If the liquid level control module is fixed, the workpiece on the printing platform is difficult to take down because the liquid level control module cannot move and generates path resistance to the movement of the printing platform. And the liquid level control module is of a lifting type and can be lifted after printing is finished. Thus, the printing workpiece is convenient to take down.
The above-mentioned embodiments are further described in detail for the purpose of illustrating the invention, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fixed 3D printing device of liquid groove which characterized in that: the device comprises an upper projection optical machine (1), a liquid tank (2), a 3D printing platform (3), a printing platform lifting mechanism (4), a liquid level control module (5) and a liquid level control module lifting mechanism (6); the liquid tank (2) is located at the bottom of the 3D printing device, the upper projection optical machine (1) is located above the liquid tank (2), the 3D printing platform (3) is located inside the liquid tank (2), the printing platform lifting mechanism (4) is connected with the 3D printing platform (3), the liquid level control module (5) comprises a light-transmitting window sheet (51), a liquid level control film (52) and a fixing device (53), and the liquid level control module lifting mechanism (6) is connected with the liquid level control module (5); photosensitive resin is injected into the liquid tank, the position of the liquid level control module in the vertical direction can be flexibly adjusted through the liquid level control module lifting mechanism, and then the working distance between the liquid level and the optical machine is accurately positioned to ensure that the optical machine projects clear patterns on the liquid level.
2. The liquid tank fixed 3D printing device according to claim 1, wherein the upper projector (1) comprises a DMD chip-based projector, a Micro LED-based projector, an LCOS chip-based projector or an SLA projector, and the projection mode is a top-down projection mode; the components of the upper projection light machine (1) do not comprise a photoetching lens.
3. A liquid bath stationary 3D printing device according to claim 1, characterized in that the liquid bath (2) is placed at the bottom of the 3D printing device and is immovable in the vertical direction.
4. The liquid tank fixed 3D printing device according to claim 1, wherein the 3D printing platform (3) is made of metal or glass, and the surface is a plane.
5. The fixed 3D printing device of liquid tank of claim 1, characterized in that the printing platform lifting mechanism (4) is used for controlling the 3D printing platform (3) to move vertically.
6. The fixed 3D printing device of liquid tank of claim 1, characterized in that the liquid level control module (5) comprises a light transmissive window sheet (51), a liquid level control film (52), and a fixing device (53); the light-transmitting window sheet (51) is arranged above the liquid level control film (52) below the liquid level control film, a closed cavity is formed between the light-transmitting window sheet (51) and the liquid level control film (52) through a fixing device (53), and an oxygen inlet (533) and an oxygen outlet (534) are arranged on the fixing device (53) to enable oxygen to flow in the closed cavity.
7. The fixed 3D printing device of claim 1, wherein the light transmissive window plate (51) is a sapphire plate, crown glass or flint glass.
8. The fixed 3D printing device of claim 1, wherein the liquid level control module lifting mechanism (6) is used for controlling the movement of the liquid level control module (5) in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000338.1A CN110871570A (en) | 2018-08-30 | 2018-08-30 | Fixed 3D printing device in liquid groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000338.1A CN110871570A (en) | 2018-08-30 | 2018-08-30 | Fixed 3D printing device in liquid groove |
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| Publication Number | Publication Date |
|---|---|
| CN110871570A true CN110871570A (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811000338.1A Pending CN110871570A (en) | 2018-08-30 | 2018-08-30 | Fixed 3D printing device in liquid groove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179547A (en) * | 2022-09-09 | 2022-10-14 | 徐州瑞缔新材料科技有限公司 | Leveling equipment for 3D printer based on photocuring |
-
2018
- 2018-08-30 CN CN201811000338.1A patent/CN110871570A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179547A (en) * | 2022-09-09 | 2022-10-14 | 徐州瑞缔新材料科技有限公司 | Leveling equipment for 3D printer based on photocuring |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20200310 Assignee: Beijing mathematical optical core technology Co.,Ltd. Assignor: LIANSHI PHOTOELECTRIC (SHENZHEN) Co.,Ltd. Contract record no.: X2021990000396 Denomination of invention: A liquid tank fixed 3D printing device License type: Exclusive License Record date: 20210701 |
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| EE01 | Entry into force of recordation of patent licensing contract |