CN106273505A - DLP photocuring 3D printer pedestal and the device and method of resin storage tank clearance control - Google Patents
DLP photocuring 3D printer pedestal and the device and method of resin storage tank clearance control Download PDFInfo
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- CN106273505A CN106273505A CN201610860785.9A CN201610860785A CN106273505A CN 106273505 A CN106273505 A CN 106273505A CN 201610860785 A CN201610860785 A CN 201610860785A CN 106273505 A CN106273505 A CN 106273505A
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- pedestal
- storage tank
- resin
- slide unit
- axis slide
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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
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses the device and method of a kind of DLP photocuring 3D printer pedestal and resin storage tank clearance control, including workbench, arrange DLP projector below described workbench, DLP projector upwards projects；Described workbench top fixing resin groove, described resin storage tank is built with resin；Also fixing Z axis slide unit on described workbench, Z axis slide unit is connected with the pedestal extended within resin storage tank, fixation pressure sensor on described pedestal, and described DLP projector, pressure transducer and Z axis slide unit are all connected with controller.The DLP photocuring 3D printer pedestal of the present invention is simple with the control method in resin storage tank gap, reliability is high, by controlling the force value between resin storage tank inner bottom surface and pedestal, can easily realize the control to pedestal Yu resin storage tank gap, it is ensured that the gap between pedestal and resin storage tank meets the requirement that the resin of solidification is fully adhered on pedestal.
Description
Technical field
The present invention relates to the device and method of a kind of DLP photocuring 3D printer pedestal and resin storage tank clearance control, belong to
3D printing technique field.
Background technology
DLP photocuring 3D printing technique is to use digital light to process (DLP) technology, utilizes scialyscope successively to solidify liquid tree
Fat manufactures the technology of entity component.This technology can quickly produce the finest part.Wide answering is had at numerous areas
By prospect, such as aspects such as industrial products conceptual design, rapid mold manufacture, medical applications.
During the work of DLP photocuring 3D printer, the resin after solidification sticks on pedestal, along with upper shifting and the resin of pedestal
Groove completes to separate, and the resin solidification for next layer is prepared.Can cured resin stick on pedestal, will directly decide
Can profiled member molding smoothly.Image information is passed to scialyscope and produces projected light by software section, and projected light passes through resin storage tank
Being irradiated to liquid resin surface, light energy E that liquid resin absorbs reaches be polymerized to when solidifying required energy threshold Ec admittedly
State.
Profiled member processing is when just starting, and the gap bottom pedestal and resin storage tank is necessary sufficiently small, in ensureing this gap
The resin in portion can be fully cured and stick to base bottom, completes to separate with resin storage tank.If solidification resin originally is not
Can all stick on pedestal, the processing failure of profiled member can be caused.Control pedestal and the device in resin storage tank gap and side at present
Method is complex, is mostly by bottom Z axis slide unit or top is installed sensor and accurately controlled the position of pedestal, thus
Realize accurately controlling the gap of pedestal and resin storage tank.The feasible premise of said method be sensor mounting location must accurately, with
Time also need to ensure the machining accuracy of safety glass bottom resin storage tank.If sensing station installs inaccuracy, or tempering glass
Glass variable thickness causes, and can cause two kinds of results.One is the excesssive gap that can cause pedestal with resin storage tank.Two is pedestal and resin storage tank
After contact, still move down, destroy resin storage tank.Above two result all can cause the processing failure of profiled member.
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of DLP photocuring 3D printer pedestal
Device with resin storage tank clearance control, it is ensured that the liquid resin of this inner space is fully cured and sticks on pedestal, from
And ensureing the smooth processing of profiled member, this device has simple and reliable advantage.
The present invention also provides for a kind of method of DLP photocuring 3D printer pedestal and resin storage tank clearance control, by controlling
Force value between resin storage tank and pedestal, can easily realize the control to pedestal Yu resin storage tank gap.
The present invention also provides for the curing of a kind of DLP photocuring 3D printer, by pedestal and resin storage tank gap
Controlling, can preferably solidify, that improves profiled member is processed into power.
For achieving the above object, the present invention uses following technical proposals:
DLP photocuring 3D printer pedestal and the device of resin storage tank clearance control, including workbench, below described workbench
Arranging DLP projector, DLP projector upwards projects；Described workbench top fixing resin groove, described resin storage tank is built with tree
Fat；Also fixing Z axis slide unit on described workbench, Z axis slide unit is connected with the pedestal extended within resin storage tank, solid on described pedestal
Constant-pressure sensor, described DLP projector, pressure transducer and Z axis slide unit are all connected with controller；
Controller controls Z axis slide unit band moving base and moves vertically downwards, and pressure transducer detection pedestal is subject to
Force value, if force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；If force value is more than or equal to
Setup pressure value, pedestal stops mobile.By the pressure between controller and pressure sensor monitoring pedestal and resin storage tank, Ke Yijing
Really controlling the gap between pedestal and resin storage tank, solidification resin can well stick on pedestal, it is thus possible to ensure profiled member
It is processed into power.
Preferably, described resin storage tank inner bottom surface is laid with thin film.Making to be not directly contacted with between pedestal and resin storage tank, resin is solid
Separate with resin storage tank after change and be more prone to.
It is further preferred that described thin film is Teflon film.Teflon film is the thin film that a kind of coefficient of friction is extremely low, sticks
At Silica Surface, the resin of solidification can be made easily to separate with resin storage tank.
The inner bottom surface of described resin storage tank is that transparent material is made, and described workbench correspondence resin storage tank position is provided with for projection
The through hole that light passes.The projected light making DLP projector smooth and easy can be irradiated to resin surface through workbench and resin storage tank, to tree
Fat solidifies.
Described transparent material is safety glass.Both can guarantee that passing through smoothly of projected light, can guarantee that again resin storage tank self
Intensity.
Preferably, described thin film passes through silicone adhesive in resin storage tank inner bottom surface.Thin film can be made well to glue by silica gel
In resin storage tank inner bottom surface；Silica gel is transparent, does not hinder the transmission of projected light；Silica gel also has elasticity, can prevent pedestal from moving down
Time destroy resin storage tank inner bottom surface, moreover it is possible to pedestal provide pressure, the gap of assist control pedestal and resin storage tank reach set requirement.
Preferably, described pressure transducer is arranged between Z axis slide unit and pedestal, and described pressure transducer one end is fixed on
On Z axis slide unit, the pressure transducer other end is fixed on pedestal.Z axis slide unit is moved up and down by pressure transducer band moving base,
Pressure transducer and pedestal action simultaneously, can detect pedestal pressure experienced value more accurately.
Described resin is liquid photosensitive resin.Liquid photosensitive resin causes polyreaction the most at once, completes solidification,
Solidification to it is simple, is easily controlled.
DLP photocuring 3D printer pedestal and the method for resin storage tank clearance control, comprise the following steps:
(1): controller controls Z axis slide unit band moving base and vertically moves up setpoint distance, makes pedestal and resin
Groove is kept completely separate；
(2): Z axis slide unit band moving base moves vertically downwards, pressure transducer detection pedestal pressure value；
If force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；
If force value is more than or equal to setup pressure value, pedestal stops mobile.
The curing of DLP photocuring 3D printer, comprises the following steps:
(1): controller controls Z axis slide unit band moving base and vertically moves up setpoint distance, makes pedestal and resin
Groove is kept completely separate；
(2): Z axis slide unit band moving base moves vertically downwards, pressure transducer detection pedestal pressure value；
If force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；
If force value is more than or equal to setup pressure value, pedestal stops mobile；
(3): the projected light of DLP projector exposes to resin surface through resin storage tank, adheres on pedestal after resin solidification；
(4): Z axis slide unit band moving base vertically moves up setpoint distance, and the resin making solidification is complete with resin storage tank
Fully separating.
The invention have the benefit that
The DLP photocuring 3D printer pedestal of the present invention is simple with the control method in resin storage tank gap, reliability is high, passes through
Control the force value between resin storage tank inner bottom surface and pedestal, can easily realize the control to pedestal Yu resin storage tank gap, it is ensured that
Gap between pedestal and resin storage tank meets the requirement that the resin of solidification is fully adhered on pedestal, solves base in the course of processing
Gap between seat and resin storage tank is difficult to control to, and causes the problem that profiled member processing is failed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of device of DLP photocuring 3D printer pedestal and resin storage tank clearance control；
In figure, 1, tension-compression sensor, 2, pedestal, 3, photosensitive resin, 4, Teflon film, 5, safety glass, 6, workbench, 7,
DLP projector, 8, Z axis slide unit, 9, cured resin, 10, silica-gel coating, 11, Control card.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, DLP photocuring 3D printer pedestal and the device of resin storage tank clearance control, including: it is arranged on work
DLP projector 7 below platform 6, DLP projector 7 upwards projects；At the resin storage tank that is fixedly arranged above of workbench 6, resin storage tank is built-in
Having photosensitive resin 3, resin storage tank inner bottom surface is that safety glass 5 is made, and silica-gel coating 10 is coated in table on safety glass 5 uniformly
Face, thin film (using Teflon film 4 in the present embodiment) sticks on silica-gel coating 10 surface, and the projected light of DLP projector 7 is through tree
Fat groove is irradiated to photosensitive resin 3 surface；Safety glass 5 is a kind of high intensity, transparent glass；Silica-gel coating 10 is a kind of transparent
, have resilient chemical material, be coated in safety glass surface uniformly；Teflon film 4 is that a kind of coefficient of friction is extremely low
Thin film, sticks on Silica Surface, and the resin of solidification can be made easily to separate with resin storage tank.
The pressure of pedestal 2 is detected by pressure transducer, selects tension-compression sensor 1, tension-compression sensor 1 one in the present embodiment
End be connected with Z axis slide unit 8, the other end is connected with pedestal 2, tension-compression sensor 1 be one physical signalling is changed into measurable
The device of signal of telecommunication output, tension-compression sensor 1 can measure the pulling force suffered by pedestal or pressure in real time.Z axis slide unit 8 is one
Kind can the device that vertically moves up and down of band moving base.Pedestal 2 is a kind of device sticking profiled member, the resin after solidification
Sticking on pedestal, along with the upper shifting of pedestal completes to separate with resin storage tank, the resin solidification for next layer is prepared.
DLP projector 7, Z axis slide unit 8, tension-compression sensor 1 are all connected with controller, and the present embodiment middle controller selects control
Making sheet card 11.Control card 11 includes scialyscope control module, Z axis slide unit control module, pressure data acquisition module.Projection
Machine control module controls the display of projection by video line, and Z axis slide unit control module can control Z axis slide unit band moving base
Moving up and down along vertical direction, pressure data acquisition module can read the pressure numerical value that tension-compression sensor returns in real time.
Control card 11 controls Z axis slide unit 8 and can vertically move up and down inside resin storage tank by band moving base 2, controls
Board 11 can the tension and compression force value that measures of Real-time Collection tension-compression sensor 1；When the pressure suffered by pedestal 2 is equal to or more than setting
Force value time, pedestal 2 stop move downward, now the gap between pedestal 2 and resin storage tank can meet solidification resin the most glutinous
It is attached on pedestal 2.
When the processing of DLP 3D printer starts, Control card controls Z axis slide unit makes pedestal move vertically downwards, when
When pedestal contacts with the Teflon film bottom resin storage tank, due to the silica gel between resin storage tank safety glass surface and Teflon film
Coating has elasticity, destroys safety glass when can prevent pedestal from moving down, and silica gel can apply pressure, above-mentioned pressure to pedestal simultaneously
Force value can along with between pedestal and silica gel diminishing of gap and increase, the force value collected when Control card reaches default value
Time, pedestal stops moving downward.By the size in gap between preset value scalable pedestal and the silica gel of regulation pressure.Subsequently
The projected light of DLP projector is irradiated to the liquid resin of inner space through resin storage tank, and is allowed to be fully cured.In treating gap
After liquid resin is fully cured, Z axis slide unit band moving base moves up a certain distance, makes resin and the safety glass table of solidification
The Teflon film in face is kept completely separate.
The present invention can realize the control to pedestal Yu resin storage tank gap by regulation pedestal pressure experienced value；Have and can protect
Card pedestal meets, with the gap of resin storage tank, the advantage that the resin of solidification is fully adhered on pedestal.
The method of work of DLP photocuring 3D printer, comprises the steps:
Step (1): set target pressure value, can control the size in gap between pedestal and resin storage tank.
Step (2): profiled member processing start time, Control card control Z axis slide unit band moving base along vertical direction to
Upper mobile a certain distance, makes pedestal be kept completely separate with resin storage tank, and Z axis slide unit band moving base is the slowest along vertical direction subsequently
Speed is mobile, makes pedestal slowly contact with the Teflon film on resin storage tank surface, and tension-compression sensor is measured suffered by pedestal in real time simultaneously
Pressure, and just pressure feedback is to Control card:
If the force value that Control card collects is less than the force value set in step (1), Z axis slide unit band moving base continues
Continue and move downward along vertical direction；
If the force value that Control card collects is more than or equal to the force value set in step (1), pedestal stop to
Lower motion.
Step (3): the projected light that DLP projector projects is irradiated in pedestal and Teflon intermembrane space through safety glass
Liquid resin on so that it is being fully cured, the resin of solidification sticks on pedestal, and Z axis slide unit band moving base moves up necessarily
Distance, make the resin of solidification completely and Teflon membrance separation.
The DLP photocuring 3D printer pedestal of the present invention and the device of resin storage tank clearance control, specific works process is as follows:
When profiled member processing starts, Control card 11 controls Z axis slide unit 8 band moving base 2 and upwards moves along vertical direction
Dynamic a certain distance, it is ensured that the Teflon film 4 bottom pedestal and resin storage tank is kept completely separate；
Control card 11 controls Z axis slide unit 8 band moving base 2 and moves slowly at downwards along vertical direction, makes pedestal gradually lean on
Nearly Teflon film 4；
During pedestal 2 moves down, tension-compression sensor 1 measures the pressure suffered by pedestal 2 in real time, and by pressure
Value feeds back to Control card 11；
Control card 11 first determines whether that tension-compression sensor 1 measures whether force value is equal to the setting value of pressure, if measuring
The force value arrived is less than setting value, and Control card 11 controls Z axis slide unit 8 band moving base 2 and continues to move down until that tension and compression sense
The force value that device 1 measures reaches setting value, and after measured value reaches setting value, Control card 11 controls pedestal 2 and stops transporting downwards
Dynamic, control DLP projector 7 by video line subsequently and project the manuscript picture of profiled member, projected light, through bottom resin storage tank, is irradiated
To liquid photosensitive resin 3 surface, it is achieved the solidification of resin.After having solidified, pedestal 2 moves up along resin direction and makes solidification
Resin separate with Teflon film 4.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1.DLP photocuring 3D printer pedestal and the device of resin storage tank clearance control, is characterized in that, including workbench, and described work
Arranging DLP projector below station, DLP projector upwards projects；Described workbench top fixing resin groove, in described resin storage tank
Equipped with resin；Also fixing Z axis slide unit on described workbench, Z axis slide unit is connected with the pedestal extended within resin storage tank, described base
Fixation pressure sensor on seat, described DLP projector, pressure transducer and Z axis slide unit are all connected with controller；
Controller controls Z axis slide unit band moving base and moves vertically downwards, pressure transducer detection pedestal pressure experienced
Value, if force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；If force value is more than or equal to setting
Force value, pedestal stops mobile.
2. device as claimed in claim 1, is characterized in that, described resin storage tank inner bottom surface is laid with thin film.
3. device as claimed in claim 2, is characterized in that, described thin film is Teflon film.
4. device as claimed in claim 1 or 2, is characterized in that, the inner bottom surface of described resin storage tank is that transparent material is made, described
Workbench correspondence resin storage tank position is provided with the through hole passed for projected light.
5. device as claimed in claim 4, is characterized in that, described transparent material is safety glass.
6. device as claimed in claim 2, is characterized in that, described thin film passes through silicone adhesive in resin storage tank inner bottom surface.
7. device as claimed in claim 1, is characterized in that, described pressure transducer is arranged between Z axis slide unit and pedestal, institute
Stating pressure transducer one end to be fixed on Z axis slide unit, the pressure transducer other end is fixed on pedestal.
8. device as claimed in claim 1, is characterized in that, described resin is liquid photosensitive resin.
9. the method utilizing device described in any one of claim 1-8, is characterized in that, comprise the following steps:
(1): controller controls Z axis slide unit band moving base and vertically moves up setpoint distance, makes pedestal complete with resin storage tank
Fully separating；
(2): Z axis slide unit band moving base moves vertically downwards, pressure transducer detection pedestal pressure value；
If force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；
If force value is more than or equal to setup pressure value, pedestal stops mobile.
10. utilize the curing of device described in any one of claim 1-8, it is characterized in that, comprise the following steps:
(1): controller controls Z axis slide unit band moving base and vertically moves up setpoint distance, makes pedestal complete with resin storage tank
Fully separating；
(2): Z axis slide unit band moving base moves vertically downwards, pressure transducer detection pedestal pressure value；
If force value is less than setup pressure value, Z axis slide unit band moving base continues to move down；
If force value is more than or equal to setup pressure value, pedestal stops mobile；
(3): the projected light of DLP projector exposes to resin surface through resin storage tank, adheres on pedestal after resin solidification；
(4): Z axis slide unit band moving base vertically moves up setpoint distance, makes the resin of solidification divide completely with resin storage tank
From.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610860785.9A CN106273505B (en) | 2016-09-28 | 2016-09-28 | The device and method of DLP photocuring 3D printer pedestal and the control of resin storage tank gap |
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| CN201610860785.9A CN106273505B (en) | 2016-09-28 | 2016-09-28 | The device and method of DLP photocuring 3D printer pedestal and the control of resin storage tank gap |
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| CN106273505B CN106273505B (en) | 2019-06-21 |
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Cited By (12)
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| CN106877759A (en) * | 2017-04-07 | 2017-06-20 | 广州黑格智造信息科技有限公司 | A kind of master control borad and 3D printer |
| CN108081596A (en) * | 2017-12-05 | 2018-05-29 | 上海交通大学 | A kind of device and its application method of the control of 3D printing device location |
| CN108162383A (en) * | 2018-02-07 | 2018-06-15 | 中国科学院福建物质结构研究所 | A kind of automatic 3D printing device and method |
| CN109049685A (en) * | 2018-08-01 | 2018-12-21 | 北京金达雷科技有限公司 | Photocuring 3D printer and Method of printing |
| CN109421259A (en) * | 2017-08-31 | 2019-03-05 | 无锡映型三维数字技术有限公司 | A kind of 3D printer accelerating solidfied material and anti-sticking UF membrane using air pressure change |
| CN109532024A (en) * | 2018-11-28 | 2019-03-29 | 广州黑格智造信息科技有限公司 | Print starting point method of adjustment, device and 3D printer |
| CN109878074A (en) * | 2019-04-01 | 2019-06-14 | 先临三维科技股份有限公司 | DLP printer and reset position determine method |
| CN109895383A (en) * | 2018-11-01 | 2019-06-18 | 先临三维科技股份有限公司 | A kind of photocuring 3D printer and its method for automatically leveling |
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| CN111300817A (en) * | 2020-03-20 | 2020-06-19 | 济宁学院 | Photocuring 3D printer and 3D printing method |
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| CN109878074A (en) * | 2019-04-01 | 2019-06-14 | 先临三维科技股份有限公司 | DLP printer and reset position determine method |
| CN110171136A (en) * | 2019-06-11 | 2019-08-27 | 杭州德迪智能科技有限公司 | A kind of efficient line scanning is light-cured into as device and method |
| CN111300817A (en) * | 2020-03-20 | 2020-06-19 | 济宁学院 | Photocuring 3D printer and 3D printing method |
| CN116277980A (en) * | 2022-10-31 | 2023-06-23 | 广州黑格智造信息科技有限公司 | Zero-finding control method of 3D printer and 3D printer |
| CN116277980B (en) * | 2022-10-31 | 2024-09-27 | 广州黑格智造信息科技有限公司 | Zero-finding control method of 3D printer and 3D printer |
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