CN115592946A - Photocuring three-dimensional inkjet printer - Google Patents
Photocuring three-dimensional inkjet printer Download PDFInfo
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- CN115592946A CN115592946A CN202211278257.4A CN202211278257A CN115592946A CN 115592946 A CN115592946 A CN 115592946A CN 202211278257 A CN202211278257 A CN 202211278257A CN 115592946 A CN115592946 A CN 115592946A
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- 238000000016 photochemical curing Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 255
- 239000011347 resin Substances 0.000 claims abstract description 57
- 229920005989 resin Polymers 0.000 claims abstract description 57
- 238000003860 storage Methods 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims 2
- 238000005286 illumination Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000013589 supplement Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000007639 printing Methods 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
-
- 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
- B29C64/255—Enclosures for the building material, e.g. powder containers
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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
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
-
- 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
- B29C64/357—Recycling
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
The invention discloses a photocuring three-dimensional printer which comprises a working box, a detachable liquid tank, an irradiation screen, a forming platform and a driving assembly, wherein the liquid tank is arranged at the top of the working box; the feeding assembly comprises a liquid storage tank which is arranged at the top of the working box and used for storing liquid resin, and holes are formed in the outer wall of the liquid tank. According to the invention, through the cooperation of the structures and the intermittent liquid supplement of the feeding assembly, the effect of automatic liquid supplement can be achieved, and meanwhile, the resin amount in the liquid tank can be kept at a relatively small degree, so that the pressure on the release film on the bottom irradiation screen can be reduced, the deformation degree of the release film can be reduced, the recovery amount of subsequent resin can be reduced, and the effect of saving resources can be further achieved.
Description
Technical Field
The invention relates to the technical field of three-dimensional printers, in particular to a photocuring three-dimensional printer.
Background
The photocuring three-dimensional printer utilizes ultraviolet light or other light sources with specific wavelength ranges to irradiate liquid photocuring resin and initiate photochemical reaction, so that the photocuring resin in a light source irradiation area is cured and formed from the liquid state, an object to be formed can be obtained through layer-by-layer curing, and the photocuring three-dimensional printer is widely applied to the aspects of industry, medicine, mold manufacturing and the like.
At present, the existing photocuring three-dimensional printer generally directly pours liquid resin into a liquid tank, then irradiates and solidifies the resin layer by layer through the cooperation between a forming platform and an irradiation screen, and integrally forms an object along with the rising of the forming platform, and then recovers the residual liquid resin in the liquid tank for the next use;
however, since the liquid resin in the liquid tank is contaminated, the liquid resin can only be stored in an extra container when being recovered, and the liquid resin cannot be recovered into the bottle containing the resin again, so as to prevent the contamination in the bottle and influence the quality of the subsequent formed product.
Disclosure of Invention
The invention aims to provide a photocuring three-dimensional printer, which can achieve the effect of automatic liquid supplement by virtue of intermittent liquid supplement of a feeding assembly, and can ensure that the resin amount in a liquid tank is relatively small, so that the pressure on a release film on a bottom irradiation screen can be reduced, the deformation degree of the release film can be reduced, the recovery amount of subsequent resin can be reduced, the effect of saving resources is further achieved, and the problem in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme: a photocuring three-dimensional printer comprises a working box, a detachable liquid tank arranged at the top of the working box, an irradiation screen arranged at the top of the working box and used for irradiating resin, a forming platform capable of enabling a formed part to be adhered and fixed, a driving assembly used for driving the forming platform to vertically lift, and a feeding assembly used for adding liquid resin into the liquid tank;
reinforced subassembly is including installing the liquid reserve tank that is used for storing liquid resin at the work box top, the outer wall of cistern is seted up porosely, and the downthehole feed liquor pipe of installing, the liquid outlet and the feed liquor pipe intercommunication of liquid reserve tank, install the solenoid valve in the feed liquor pipe, just the solenoid valve is opened or is closed along with the change of liquid level height in the cistern at intermittent type.
Preferably, a liquid level sensor used for detecting the height of the liquid level in the liquid tank is installed at the top of the liquid tank, the liquid level sensor is electrically connected with the electromagnetic valve, when the liquid level sensor detects that the liquid level in the liquid tank is lower than a preset value, the electromagnetic valve is opened, and when the liquid level in the liquid tank reaches the preset value, the electromagnetic valve is closed.
Preferably, a vertical pipe is fixed on the inner wall of the liquid tank, the bottom end of the vertical pipe extends below the liquid level in the liquid tank, and the liquid level sensor is right opposite to the liquid level in the vertical pipe.
Preferably, the interior bottom of liquid reserve tank sets up to circular inner chamber, and installs the splitter plate of rotatable regulation in the circular inner chamber, the interface channel who runs through the centre of a circle is seted up to the inside of splitter plate, just the upper portion space intercommunication of interface channel and liquid reserve tank, the bottom intercommunication of liquid reserve tank has two drain pipes, and one of them can dismantle between drain pipe and the feed liquor pipe and be connected, works as when the splitter plate rotates, interface channel communicates with one of them drain pipe.
Preferably, the liquid reserve tank all is provided with the arch near the both sides inner wall of flow distribution plate, and when flow distribution plate rotated messenger interface channel and drain pipe intercommunication, interface channel's port department was less than the arch.
Preferably, the liquid collecting device further comprises a liquid collecting component used for collecting resin in the liquid tank, the liquid collecting component comprises two liquid collecting plates arranged on the inner wall of the liquid tank, the bottom of each liquid collecting plate is provided with an arc surface, the arc surface is in contact with the top of the working box, a sliding rod is fixed at the circle center of the arc surface, the sliding rod is horizontally and slidably arranged in a sliding groove formed in the inner wall of the liquid tank, a limiting pin is fixed on the outer wall, close to the top, of each liquid collecting plate, a vertical groove is formed in the inner wall of the liquid tank, and the limiting pin is vertically and slidably arranged in the vertical groove; the driving structure is used for driving the two sliding rods to slide oppositely or oppositely.
Preferably, the driving structure comprises two electric telescopic rods arranged on the inner walls of the two sides of the liquid tank, the output ends of the two electric telescopic rods are respectively and rotatably connected with the two sliding rods through connecting blocks, a distance sensor used for measuring the distance between the driving assembly and the liquid tank is arranged between the driving assembly and the liquid tank, and when the distance sensor detects that the distance between the driving assembly and the liquid tank exceeds a preset value, the distance sensor controls the output ends of the two electric telescopic rods to extend out.
Preferably, the liquid inlet pipe is lower than the liquid level of the resin in the liquid tank.
Preferably, the printing device further comprises a liquid collecting assembly, the liquid collecting assembly comprises an annular air bag arranged on the inner wall of the liquid groove, the liquid collecting assembly further comprises an inflator pump used for inflating the annular air bag, and when the number of the remaining layers of the printing piece reaches a preset value, the inflator pump inflates the annular air bag.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the cooperation of the structures and the intermittent liquid supplement of the feeding assembly, the effect of automatic liquid supplement can be achieved, and meanwhile, the resin amount in the liquid tank can be kept at a relatively small degree, so that the pressure on the release film on the bottom irradiation screen can be reduced, the deformation degree of the release film can be reduced, the recovery amount of subsequent resin can be reduced, and the effect of saving resources can be further achieved.
Drawings
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a front view of the first embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A andbase:Sub>A partial enlarged view of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional perspective view of the invention from the perspective of FIG. 3;
FIG. 5 is a left side view of the first embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5 in accordance with the present invention;
FIG. 7 is a perspective view in section and in partial enlargement of the fluid bath of the present invention;
FIG. 8 is an enlarged perspective view of the liquid tank according to the second embodiment of the present invention.
In the figure: 1. a work box; 2. a liquid bath; 3. a forming platform; 4. a drive assembly; 5. a transparent cover; 6. a liquid storage tank; 7. an irradiation screen; 8. a diverter tray; 9. a connecting channel; 10. a liquid inlet pipe; 11. an electromagnetic valve; 12. a liquid outlet pipe; 13. a liquid level sensor; 14. a vertical tube; 15. a distance sensor; 16. a liquid collecting plate; 17. a slide bar; 18. an electric telescopic rod; 19. a chute; 20. a vertical slot; 21. a limit pin; 22. an annular air bag.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1 to 7, the present invention provides a technical solution: a photocuring three-dimensional printer comprises a working box 1, a detachable liquid tank 2 arranged at the top of the working box 1, an irradiation screen 7 arranged at the top of the working box 1 and used for irradiating resin, a forming platform 3 capable of adhering and fixing a formed part, a driving assembly 4 used for driving the forming platform 3 to vertically lift, and a feeding assembly used for adding liquid resin into the liquid tank 2;
the reinforced subassembly is including installing liquid reserve tank 6 that is used for storing liquid resin at 1 top of work box, and the outer wall of cistern 2 is seted up porosely, and downthehole liquid inlet pipe 10 of installing, and the liquid outlet and the liquid inlet pipe 10 intercommunication of liquid reserve tank 6 install solenoid valve 11 in the liquid inlet pipe 10, and solenoid valve 11 is along with the change of liquid level height in cistern 2 and the intermittent type is opened or is closed.
When the photocuring three-dimensional printer is used, preorders such as leveling and the like are firstly carried out on the forming platform 3, the process is the prior art, and the process is not repeated;
when printing is started, liquid resin is poured into the liquid storage tank 6, then the liquid resin is injected into the liquid tank 2 through the liquid outlet and the liquid inlet pipe 10, the bottom surface of the forming platform 3 is immersed, then when the height of the liquid level in the liquid tank 2 rises to a specified height, the electromagnetic valve 11 is closed at the moment, liquid injection is stopped, then under the control of the control assembly in the working tank 1, the irradiation screen 7 irradiates and solidifies the photosensitive resin in the liquid tank 2, and the driving assembly 4 drives the forming platform 3 to gradually move upwards so as to achieve the purpose of layer-by-layer solidification and forming;
the liquid level in the liquid tank 2 is gradually reduced along with the solidification and improvement of the resin, when the liquid level is lower than the designated height, the electromagnetic valve 11 is opened at the moment, the resin is injected into the liquid tank 2 again, so that the effect of automatic liquid supplementation is achieved, and the resin amount in the liquid tank 2 can be in a relatively small degree, so that the pressure on a release film on the bottom irradiation screen 7 can be reduced, the deformation degree of the release film is reduced, and although the success rate of the existing three-dimensional printer is higher, the failure probability still exists, namely (the formed part is not completely fixed on the forming platform 3, the phenomenon of falling and the like occurs in the rising process), when the failure occurs, the resin pollution amount in the liquid tank 2 can be reduced even if the formed part falls, and the purpose of saving resources is further achieved.
Meanwhile, because the resin amount in the liquid tank 2 is kept in a relatively small state, when some long models are printed, the residual resin on the molded models can be reduced, so that subsequent printed products can be cleaned conveniently.
Since the photosensitive resin is expensive relative to the ABS engineering material for the FDM three-dimensional printer, resource saving is necessary.
In a further preferred embodiment, a liquid level sensor 13 for detecting the height of the liquid level in the liquid tank 2 is installed at the top of the liquid tank 2, and the liquid level sensor 13 is electrically connected to the electromagnetic valve 11, when the liquid level sensor 13 detects that the liquid level in the liquid tank 2 is lower than a preset value, the electromagnetic valve 11 is opened, and when the liquid level in the liquid tank 2 reaches the preset value, the electromagnetic valve 11 is closed.
Specifically, referring to fig. 3, the liquid level in the liquid tank 2 is detected by the liquid level sensor 13, the liquid level sensor 13 may be an infrared sensor, and the opening or closing of the electromagnetic valve 11 is controlled in real time by the liquid level sensor 13, so that the liquid can be replenished in the liquid tank 2 in time, and the phenomenon of insufficient resin is avoided.
In a further preferred embodiment, a standpipe 14 is fixed to the inner wall of the liquid tank 2, and the bottom end of the standpipe 14 extends below the liquid level in the liquid tank 2, and the liquid level sensor 13 is aligned with the liquid level in the standpipe 14.
Specifically, referring to fig. 3, because the vertical tube 14 is communicated with the liquid level, the liquid level sensor 13 detects the liquid level in the vertical tube 14 to measure the height of the liquid level, which aims to solve the problem that the liquid level sensor 13 has an error due to fluctuation of the liquid level in the liquid tank 2 caused by the rising of the forming platform 3 or the liquid supplement of the liquid inlet pipe 10, and the vertical tube 14 is arranged to greatly reduce the influence of the fluctuation of the liquid level on the detection result, so that the detection of the liquid level is more accurate, and the liquid supplement is more real-time and accurate.
In further comparatively preferred embodiment, the interior bottom of liquid reserve tank 6 sets up to circular inner chamber, and installs rotatable regulation's reposition of redundant personnel dish 8 in the circular inner chamber, and reposition of redundant personnel dish 8's inside is seted up and is run through the connecting channel 9 of centre of a circle, and connecting channel 9 and liquid reserve tank 6's upper portion space intercommunication, and the bottom intercommunication of liquid reserve tank 6 has two drain pipes 12, and can dismantle between one of them drain pipe 12 and the feed liquor pipe 10 and be connected, when reposition of redundant personnel dish 8 rotates, connecting channel 9 communicates with one of them drain pipe 12.
Specifically can refer to fig. 3, annotate during the liquid, liquid resin pours into liquid reserve tank 6 back, can flow in drain pipe 12 through connecting channel 9, then pour into cistern 2 through feed liquor pipe 10 again, after finishing printing, when needing to retrieve the resin in liquid reserve tank 6 this moment, through rotating adjustment diverter plate 8, make connecting channel 9 and another drain pipe 12 intercommunication in it, thereby can make its inside residual resin flow and retrieve, if still need use, can rotate diverter plate 8 and make connecting channel 9 and two drain pipes 12 all not communicate, directly accomodate through liquid reserve tank 6, also can discharge and collect, select according to actual conditions.
It is worth mentioning that the resin in the liquid storage tank 6 does not enter the liquid tank 2, so that the resin is not polluted, and the resin can be poured back into the original containing bottle through the liquid outlet pipe 12 when being recovered, thereby being beneficial to the recovery of the resin again and the next use.
And because can dismantle between drain pipe 12 and the feed liquor pipe 10 and be connected, liquid reserve tank 6 just can be equipped with several groups in the complete set like this, be used for storing different colours or kind's resin respectively, like this when needs change the resin, only need wash cistern 2, then change liquid reserve tank 6 can, reduce the clean process when changing, improve work efficiency.
In a further preferred embodiment, the inner walls of the two sides of the liquid storage tank 6 close to the diverter trays 8 are provided with protrusions, and when the diverter trays 8 rotate to communicate the connecting channels 9 with the liquid outlet pipes 12, the ports of the connecting channels 9 are lower than the protrusions.
Specifically, referring to the enlarged view of the part in fig. 3, when the diversion plate 8 rotates to communicate the connection channel 9 with the liquid outlet pipe 12, the port of the connection channel 9 is lower than the protrusion, so that no matter in the liquid supplementing process or the liquid discharging process, the liquid in the liquid storage tank 6 can be completely discharged from the connection channel 9, the internal residue is reduced, and the subsequent cleaning process can be conveniently performed while the liquid is recovered.
In a further preferred embodiment, the liquid collecting device further comprises a liquid collecting component for collecting and concentrating resin in the liquid tank 2, the liquid collecting component comprises two liquid collecting plates 16 arranged on the inner wall of the liquid tank 2, the bottom of each liquid collecting plate 16 is provided with an arc surface, the arc surface is in contact with the top of the working box 1, a sliding rod 17 is fixed at the center of the arc surface, the sliding rod 17 is horizontally and slidably arranged in a sliding groove 19 arranged on the inner wall of the liquid tank 2, a limiting pin 21 is fixed on the outer wall of the liquid collecting plate 16 close to the top, a vertical groove 20 is arranged on the inner wall of the liquid tank 2, and the limiting pin 21 is vertically and slidably arranged in the vertical groove 20; and the device also comprises a driving structure for driving the two sliding rods 17 to slide oppositely or oppositely.
Referring specifically to fig. 6, it can be seen from the foregoing that the resin amount in the liquid tank 2 can be kept relatively small by the intermittent liquid replenishment of the feeding assembly, and when the molding member is gradually solidified, the resin amount in the liquid tank 2 is the same as that in the molding process after the molding process is finished by the continuous feeding of the feeding assembly, so that a part of the resin is mixed with the liquid tank 2, which causes waste;
therefore, when the formed part is about to be cured, the driving structure drives the two sliding rods 17 to move relatively, then the sliding rods 17 drive the bottom of the liquid collecting plate 16 to move towards the middle of the liquid tank 2, and meanwhile, the limiting pin 21 at the top of the liquid collecting plate moves downwards along the vertical groove 20, so that the liquid collecting plate 16 rotates to be inclined while moving towards the middle of the liquid tank 2, and the residual resin in the liquid tank 2 is collected towards the middle, and the liquid level rises along with the reduction of the space, so that the curing of the residual formed part can be completed, meanwhile, the liquid level sensor 13 can control the electromagnetic valve 11 to be closed, and the liquid supplementing is stopped, so that the effect of fully utilizing the residual resin is achieved, the resin amount in the liquid tank 2 after the curing is completed is further reduced, the effect of saving resources is further achieved, and the liquid collecting plate 16 is in an inclined state, and the influence of mistaken touch on the cured printed part is not caused.
Moreover, in the process, as the sliding rod 17 is positioned at the center of the arc at the bottom of the liquid collecting plate 16, the arc of the liquid collecting plate 16 is always in contact with the top of the working box 1 in the rotating process, so that the liquid collecting plate can be always kept in a sealed state to ensure the liquid collecting effect.
In a further preferred embodiment, the driving structure comprises two electric telescopic rods 18 installed on the inner walls of the two sides of the liquid tank 2, the output ends of the two electric telescopic rods 18 are respectively connected with the two sliding rods 17 in a rotating mode through connecting blocks, a distance sensor 15 used for measuring the distance between the driving assembly 4 and the liquid tank 2 is installed between the driving assembly 4 and the liquid tank 2, and when the distance sensor 15 detects that the distance between the driving assembly and the liquid tank exceeds a preset value, the distance sensor 15 controls the output ends of the two electric telescopic rods 18 to stretch out.
Specifically, referring to fig. 3, the distance from the forming platform 3 to the bottom of the liquid tank 2 can be detected in a phase-variable manner through the distance sensor 15, so that the distance can be set in advance, the height of the printed object can be set according to the requirement, and when the remaining printed height reaches a certain degree, the distance sensor 15 can sense and control the output ends of the two electric telescopic rods 18 to extend out, so that the liquid collecting plate 16 is driven to rotate, and a timing driving effect is achieved.
In a further preferred embodiment, the inlet pipe 10 is below the level of the resin in the tank 2.
The liquid inlet pipe 10 is lower than the liquid level, so that the fluctuation of the liquid level during liquid supplement can be reduced, and the influence of the fluctuation of the liquid level on the liquid level sensor 13 is further reduced.
Example two, unlike example one, an implementation of a second liquid trap assembly is provided;
in a further preferred embodiment, the printing device further comprises a liquid collecting assembly, the liquid collecting assembly comprises an annular air bag 22 arranged on the inner wall of the liquid groove 2, and an inflator pump used for inflating the annular air bag 22, and when the number of the remaining layers of the printed matter reaches a preset value, the inflator pump inflates the annular air bag 22.
Referring specifically to fig. 8, when the curing of the molded article is completed, that is, when the number of remaining layers of the printed article reaches a preset value, the inflator inflates the annular bladder 22, so that the annular bladder 22 is inflated, the space of the liquid tank 2 is reduced, the resin gathers to the middle, and the liquid level rises.
The standard parts used in the present embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification and drawings can also be obtained by processing directly according to the prior art knowledge without any doubt, and the connection mode of the parts adopts the conventional means mature in the prior art, and the machines, parts and equipment adopt the conventional models in the prior art, so that the detailed description is not given here.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a photocuring three-dimensional printer, includes work box (1), installs at work box (1) top and detachable cistern (2), installs and be used for shining the illumination screen (7) of resin at work box (1) top, can make fixed shaping platform (3) of formed part adhesion and be used for driving drive assembly (4) of shaping platform (3) vertical lift, its characterized in that: the device also comprises a feeding component used for adding liquid resin into the liquid tank (2);
the feeding assembly comprises a liquid storage tank (6) arranged at the top of a working tank (1) and used for storing liquid resin, the outer wall of a liquid tank (2) is provided with a hole, a liquid inlet pipe (10) is arranged in the hole, a liquid outlet of the liquid storage tank (6) is communicated with the liquid inlet pipe (10), an electromagnetic valve (11) is arranged in the liquid inlet pipe (10), and the electromagnetic valve (11) is intermittently opened or closed along with the change of the liquid level in the liquid tank (2).
2. The photo-cured three-dimensional printer according to claim 1, wherein: the liquid level sensor (13) used for detecting the height of the liquid level in the liquid tank (2) is installed at the top of the liquid tank (2), the liquid level sensor (13) is electrically connected with the electromagnetic valve (11), when the liquid level sensor (13) detects that the liquid level in the liquid tank (2) is lower than a preset value, the electromagnetic valve (11) is opened, and when the liquid level in the liquid tank (2) reaches the preset value, the electromagnetic valve (11) is closed.
3. The stereolithographic printer according to claim 2, wherein: a vertical pipe (14) is fixed on the inner wall of the liquid tank (2), the bottom end of the vertical pipe (14) extends below the liquid level in the liquid tank (2), and the liquid level sensor (13) is right opposite to the liquid level in the vertical pipe (14).
4. The stereolithographic printer according to claim 1, wherein: the interior bottom of liquid reserve tank (6) sets up to circular inner chamber, and installs splitter plate (8) of rotatable regulation in the circular inner chamber, connect passage (9) that run through the centre of a circle are seted up to the inside of splitter plate (8), just connect passage (9) and the upper portion space intercommunication of liquid reserve tank (6), the bottom intercommunication of liquid reserve tank (6) has two drain pipes (12), and one of them can dismantle between drain pipe (12) and feed liquor pipe (10) and be connected, work as when splitter plate (8) rotate, connect passage (9) and one of them drain pipe (12) intercommunication.
5. The stereolithographic machine according to claim 4, wherein: the both sides inner wall that liquid reserve tank (6) are close to flow distribution plate (8) all is provided with the arch, and when flow distribution plate (8) rotated and made connecting channel (9) and drain pipe (12) intercommunication, the port department of connecting channel (9) is less than the arch.
6. The photo-cured three-dimensional printer according to claim 1, wherein: the liquid collecting component comprises two liquid collecting plates (16) arranged on the inner wall of the liquid tank (2), the bottom of each liquid collecting plate (16) is provided with an arc surface, the arc surface is in contact with the top of the working box (1), a sliding rod (17) is fixed at the circle center of the arc surface, the sliding rod (17) is horizontally and slidably arranged in a sliding groove (19) formed in the inner wall of the liquid tank (2), a limiting pin (21) is fixed on the outer wall, close to the top, of each liquid collecting plate (16), a vertical groove (20) is formed in the inner wall of the liquid tank (2), and the limiting pin (21) is vertically and slidably arranged in the vertical groove (20); the device also comprises a driving structure for driving the two sliding rods (17) to slide oppositely or oppositely.
7. The stereolithographic machine according to claim 6, wherein: the driving structure comprises two electric telescopic rods (18) arranged on the inner walls of the two sides of the liquid tank (2), the output ends of the electric telescopic rods (18) are rotatably connected with two sliding rods (17) through connecting blocks respectively, a distance sensor (15) used for measuring the distance between the two electric telescopic rods is arranged between the driving assembly (4) and the liquid tank (2), and when the distance sensor (15) detects that the distance between the two electric telescopic rods exceeds a preset value, the output ends of the two electric telescopic rods (18) are controlled by the distance sensor (15) to stretch out.
8. The stereolithographic printer according to any one of claims 1-7, wherein: the liquid inlet pipe (10) is lower than the liquid level of the resin in the liquid tank (2).
9. The stereolithographic printer according to claim 1, wherein: the liquid collecting component comprises an annular air bag (22) arranged on the inner wall of the liquid tank (2) and an inflator pump used for inflating the annular air bag (22), and when the number of the remaining layers of the printed piece reaches a preset value, the inflator pump inflates the annular air bag (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211278257.4A CN115592946A (en) | 2022-10-19 | 2022-10-19 | Photocuring three-dimensional inkjet printer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211278257.4A CN115592946A (en) | 2022-10-19 | 2022-10-19 | Photocuring three-dimensional inkjet printer |
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| CN202211278257.4A Pending CN115592946A (en) | 2022-10-19 | 2022-10-19 | Photocuring three-dimensional inkjet printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116587598A (en) * | 2023-05-12 | 2023-08-15 | 纵横增材智能科技(珠海)有限公司 | DLP printer with sinking type printing function |
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Application publication date: 20230113 |