CN114347478B - Cleaning device and method for multi-material 3D printing - Google Patents
Cleaning device and method for multi-material 3D printing Download PDFInfo
- Publication number
- CN114347478B CN114347478B CN202210066521.1A CN202210066521A CN114347478B CN 114347478 B CN114347478 B CN 114347478B CN 202210066521 A CN202210066521 A CN 202210066521A CN 114347478 B CN114347478 B CN 114347478B
- Authority
- CN
- China
- Prior art keywords
- cleaning
- printing
- liquid
- air outlet
- cleaning box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 162
- 239000000463 material Substances 0.000 title claims abstract description 84
- 238000010146 3D printing Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007639 printing Methods 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 238000007605 air drying Methods 0.000 claims abstract description 51
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 68
- 238000003892 spreading Methods 0.000 claims description 34
- 230000007480 spreading Effects 0.000 claims description 34
- 238000007790 scraping Methods 0.000 claims description 29
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 7
- 230000002572 peristaltic effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 210000003934 vacuole Anatomy 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000001723 curing Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 238000000016 photochemical curing Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The invention provides a device and a method for cleaning multi-material 3D printing, wherein the device comprises the following components: the printing device comprises a base, a printing platform unit and a cleaning and air-drying unit; the cleaning and air drying unit comprises a cleaning box unit, a cleaning box rotary switching mechanism, an air outlet plate and an air outlet plate rotary driving mechanism; the cleaning box rotating switching mechanism is connected with the cleaning box unit and used for rotating the cleaning box unit to the position right below the printing platform; the air outlet plate rotating driving mechanism is connected with the air outlet plate and used for driving the air outlet plate to horizontally rotate. Adopt rotatory switching mode to realize the control to wasing air-drying device, in whole 3D printing and washs air-drying process, print platform position is motionless to help improving print platform's printing precision. In addition, the cleaning and air-drying device has the advantages of integrating cleaning and air-drying functions, being various in functions, and performing air-drying after cleaning the printed matter, so that the printing materials are prevented from being polluted each other in the execution process of the printing task, and the quality of the printed product is guaranteed.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a device and a method for cleaning multi-material 3D printing.
Background
The 3D printing mode at the present stage mainly comprises the following steps: after 3D printing of the parts is finished, immersing the parts in the cleaning box, cleaning the parts, and removing printing residual materials on the surfaces of the parts. The cleaning box designed in the mode is a conventional cleaning box, the cleaning frequency is low in single-time work, and the cleaning target is mainly resin without particle deposition.
The cleaning box is single in function, and is independent relative to 3D printing equipment, and can not be suitable for switching printing cleaning among different materials in the 3D printing process of multiple materials.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device and a method for cleaning multi-material 3D printing, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
The invention provides a cleaning device for multi-material 3D printing, comprising: a base (100), a printing platform unit (200) and a cleaning and air drying unit (600);
The printing platform unit (200) is fixedly arranged above the base (100); the printing platform unit (200) comprises a platform lifting mechanism (201) and a printing platform (202); the platform lifting mechanism (201) is a ball screw lifting mechanism;
The cleaning and air drying unit (600) comprises a cleaning box unit, a cleaning box rotary switching mechanism, an air outlet plate (606) and an air outlet plate rotary driving mechanism; the cleaning box rotating switching mechanism is connected with the cleaning box unit and is used for rotating the cleaning box unit to the position right below the printing platform (202); the air outlet plate rotary driving mechanism is connected with the air outlet plate (606) and is used for driving the air outlet plate (606) to horizontally rotate; the air outlet plate (606) is located above the cleaning box unit.
Preferably, the platform lifting mechanism (201) is a ball screw lifting mechanism, comprising: a lifting motor (2011), a screw rod (2012), a sliding block (2013), an upper limit switch (2014) and a lower limit switch (2015);
The screw rod (2012) is vertically arranged; the sliding block (2013) is sleeved on the screw rod (2012); the outside of the sliding block (2013) is fixedly provided with the horizontally arranged printing platform (202); the lifting motor (2011) is used for driving the screw rod (2012) to rotate; and at the upper limit position and the lower limit position of the sliding block (2013) in sliding, the upper limit switch (2014) and the lower limit switch (2015) are respectively arranged.
Preferably, n cartridges (505) are also included;
-mounting n of said cartridges (505) and one of said cartridge units in a ring shape; the material box (505) and the cleaning box unit are connected with the cleaning box rotary switching mechanism.
Preferably, a spreading scraping piece (404) is arranged above each material box (505) in a unique corresponding mode; the paver scraper (404) and the windoutlet plate (606) are both connected to the windoutlet plate rotary drive mechanism.
The invention also provides a method for the multi-material 3D printing cleaning device, which comprises the following steps:
Step 1, in the multi-material 3D printing process, after one-time printing material solidification molding is completed by bonding the bottom surface of a printing platform, a cleaning box rotation switching mechanism controls a cleaning box unit, so that the cleaning box unit rotates to be right below the printing platform (202);
step 2, a platform lifting mechanism (201) controls a printing platform (202) to descend, so that a solidified and formed part bonded on the bottom surface of the printing platform is immersed into cleaning liquid in a cleaning box unit, and ultrasonic cleaning is carried out on the solidified and formed part;
Step 3, after cleaning, the platform lifting mechanism (201) controls the printing platform (202) to rise to a certain height, so that the solidified and formed part on the bottom surface of the printing platform (202) is positioned above the air outlet plate (606);
And 4, driving the air outlet plate (606) to swing below the curing forming part by the air outlet plate rotary driving mechanism, and enabling air outlet of the air outlet plate (606) to directly blow to the curing forming part, so as to realize the air drying function of the curing forming part at the bottom of the printing platform (202).
The device and the method for cleaning the multi-material 3D printing have the following advantages:
adopt rotatory switching mode to realize the control to wasing air-drying device, in whole 3D printing and washs air-drying process, print platform position is motionless to help improving print platform's printing precision. In addition, the cleaning and air-drying device has the advantages of integrating cleaning and air-drying functions, being various in functions, and performing air-drying after cleaning the printed matter, so that the printing materials are prevented from being polluted each other in the execution process of the printing task, and the quality of the printed product is guaranteed.
Drawings
Fig. 1 is an overall schematic diagram of a cleaning device for multi-material 3D printing provided by the present invention;
FIG. 2 is a block diagram of a cleaning unit according to the present invention;
FIG. 3 is a block diagram of a bubble generator provided by the present invention;
FIG. 4 is a block diagram of an air outlet plate according to the present invention.
Fig. 5 is an overall view of the 3D printing device provided by the present invention;
fig. 6 is a schematic diagram of an internal structure of the multi-material 3D printing device according to the present invention after the base is hidden;
FIG. 7 is a block diagram of the rotary switching mechanism of the cleaning cartridge according to the present invention at an angle;
FIG. 8 is a block diagram of the rotary switching mechanism of the cleaning cartridge according to the present invention at another angle;
FIG. 9 is a block diagram of the feed-and-spread-material scraping integrated unit provided by the invention;
FIG. 10 is a diagram showing the positional relationship between a spreading scraper and a magazine according to the present invention;
FIG. 11 is a block diagram of a paver scraper provided by the present invention;
FIG. 12 is a block diagram of a doctor blade holder provided by the present invention;
Fig. 13 is a structural view of a doctor blade provided by the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a cleaning device for multi-material 3D printing, which integrates a 3D printing platform and a cleaning and air-drying device, wherein the cleaning and air-drying device adopts a rotary switching mode, and when the printing platform needs to be cleaned and air-dried, the cleaning and air-drying device is rotated to be right below the printing platform; when the cleaning and air drying are finished, the cleaning and air drying device is rotated to other positions, so that the printing platform performs a printing process. Because the control to wasing the air-drying device is realized to the rotatory switching mode, in whole 3D printing and washs the air-drying in-process, print platform position is motionless to help improving print platform's printing precision. In addition, the cleaning and air-drying device has the advantages of integrating cleaning and air-drying functions, being various in functions, and performing air-drying after cleaning the printed matter, so that the printing materials are prevented from being polluted each other in the execution process of the printing task, and the quality of the printed product is guaranteed.
Referring to fig. 1, the present invention provides a cleaning device for multi-material 3D printing, comprising: a base 100, a printing platform unit 200, and a cleaning air drying unit 600;
A printing platform unit 200 is fixedly installed above the base 100; the printing platform unit 200 includes a platform lifting mechanism 201 and a printing platform 202; the platform lifting mechanism 201 is a ball screw lifting mechanism;
The cleaning and air drying unit 600 comprises a cleaning box unit, a cleaning box rotary switching mechanism, an air outlet plate 606 and an air outlet plate rotary driving mechanism; the cleaning box rotation switching mechanism is connected with the cleaning box unit and is used for rotating the cleaning box unit to the position right below the printing platform 202; the air outlet plate rotary driving mechanism is connected with the air outlet plate 606 and is used for driving the air outlet plate 606 to horizontally rotate; the air outlet plate 606 is located above the wash cassette unit.
The following details of the structural components:
Platform lifting mechanism 201
The platform lifting mechanism 201 is a ball screw lifting mechanism, including: a lifting motor 2011, a screw 2012, a sliding block 2013, an upper limit switch 2014 and a lower limit switch 2015;
The screw 2012 is vertically arranged; a mounting slide block 2013 is sleeved on the screw rod 2012; the outside of the slide block 2013 is fixedly provided with a horizontally arranged printing platform 202; the lifting motor 2011 is used for driving the screw 2012 to rotate; at the upper limit and the lower limit positions where the slider 2013 slides, an upper limit switch 2014 and a lower limit switch 2015 are installed, respectively, so as to limit the position limit of the printing platform 202.
(II) cleaning box unit and air outlet plate 606
It should be emphasized that the cleaning box unit and the air outlet plate 606 provided in this embodiment are only one specific embodiment, and in practical application, the cleaning box unit and the air outlet plate in other structural forms may also be adopted, which is not limited in this aspect of the invention:
Specifically, whether the cleaning of printing residual materials is complete or not in the 3D printing process of photo-curing various materials directly influences the quality of a printed product. Especially when the photocuring molding additive is manufactured, most of printing raw materials are in a liquid or paste state. In order to achieve multi-gradient printing of multiple materials, it is necessary to ensure that different printing materials do not contaminate each other during execution of a print job. Each time a material is printed, the printing surface can not have other remnants, so that printing of different materials can be realized at each layer or even at a single pixel level. Traditional cleaning methods can physically damage the surface quality of printed products to some extent or can not thoroughly clean the printed products.
Therefore, the invention designs a self-leveling ultrasonic cleaning box for multi-material 3D printing, which is a cleaning box for multi-material 3D printing, and adopts an ultrasonic cleaning, a liquid bubble method generator and an air outlet plate mode to ensure that printing materials cannot be polluted mutually in the execution process of a printing task, thereby ensuring the quality of printing products.
(2.1) Cleaning box unit
Referring to fig. 2 and 3, a self-leveling ultrasonic cleaning cartridge for multi-material 3D printing includes a cleaning cartridge 601, an ultrasonic generator 602, a bubble generator 603, a self-leveling liquid outlet 604, and a self-leveling liquid return 605;
The bottom of the cleaning box 601 is provided with an ultrasonic generator 602; two sides of the cleaning box 601 are respectively provided with a self-leveling liquid outlet 604 and a self-leveling liquid return port 605; between the self-leveling liquid outlet 604 and the self-leveling liquid return 605, a liquid bubble generator 603 is installed.
The principle is as follows:
The cleaning box 601 is made of a 3D printing nonmetallic material, so that a complex mechanism can be realized, and vibration transmission is reduced.
The self-leveling liquid outlet 604 and the self-leveling liquid return outlet 605 are respectively connected with a peristaltic pump to realize the circulation of cleaning liquid. The circulation mode is as follows: the cleaning fluid is positioned in the liquid container, enters the cleaning box through the self-leveling liquid return port 605 by the peristaltic pump, is pumped out from the self-leveling liquid outlet 604 by the peristaltic pump and is filtered, and finally, the filtered cleaning fluid is returned into the liquid container. Since the self-leveling liquid outlet 604 and the self-leveling liquid return port 605 are designed to be plane self-leveling, the cleaning liquid can flow in and out stably.
The bottom of the cleaning box 601 is provided with an ultrasonic generator 602 which can generate cavitation effect to clean the surface of the printing piece.
Ultrasonic power is not excessive because ultrasonic generator 602 power would cause damage to the printed part structure. Thus, the power of the ultrasonic generator 602 does not uniformly distribute the particle deposition on the liquid surface, and thus, particles in the solution cannot be discharged from the cleaning tank 601 through the self-leveling liquid outlet 604. The invention particularly designs the liquid bubble generator 603 in order to ensure that the residual material particles in the cleaning box 601 can be effectively discharged from the horizontal liquid outlet 604 and filtered, and the cleaning liquid in the cleaning box 601 is clean.
Referring to fig. 3, the tonoplast generator 603 includes a tonoplast generator body 6031, the tonoplast generator body 6031 has a cavity structure, and a surface of the tonoplast generator body 6031 is provided with a plurality of vent holes 6032 communicated with the cavity structure; the back of the liquid bubble generator body 6031 is provided with an air inlet hole 6033 communicated with the cavity structure; the air inlet hole 6033 is connected with an air source.
Through connecting the gas circuit, make gas produce great bubble along the round hole in vacuole generator 603 surface, make the deposit granule evenly distributed in the cleaning box liquid in the liquid surface to get into from the horizontal liquid outlet 604 filtration along with the liquid circulation, thereby guarantee that the washing liquid in the cleaning box keeps good cleaning performance, can work for a long time under the condition of not changing the washing liquid.
In addition, in the invention, a plurality of round holes are designed around the cleaning box and are the overflow tanks 607, so that overflow liquid can be stored, and cleaning liquid is prevented from splashing to other places of the device. The cleaning box is also provided with an overflow hole 608, the overflow hole 608 is slightly higher than the surface of the overflow groove 607 and lower than the upper surface of the outer wall of the cleaning box, when excessive cleaning liquid is caused by some abnormal reasons in the cleaning box, the liquid can enter the overflow hole 608 to trigger the overflow sensor 609, so that the cleaning system is suspended, and the damage or pollution to printing equipment caused by excessive overflow or outflow is avoided.
(2.2) Air outlet plate 606
In the present invention, an air outlet plate 606 is provided above the cleaning box 601 as an air drying unit, and referring to fig. 4, the air drying unit includes the air outlet plate 606; the air outlet plate 606 adopts a porous integrated type surface air outlet structure, the air outlet plate 606 is horizontally arranged above the cleaning unit, one end of the air outlet plate 606 is provided with an air inlet 606A, and the air inlet 606A is connected with an air source through an air circuit electromagnetic valve; the upper surface of the air outlet plate 606 is provided with a plurality of air outlets 606B.
The air outlet plate 606 directly blows to the bottom of the printing platform through the air outlet 606B, and in the air outlet process, the air drying function of the printing surface of the bottom of the printing platform is realized through swinging.
The air outlet plate is designed to be a porous integrated type surface air outlet structure, so that the problem that the printed piece is physically damaged due to air outlet of a traditional air nozzle is greatly reduced; in addition, the porous inherited surface of the invention has the advantages of air outlet, large air-drying area, and effectively improved air-drying efficiency and effect.
(III) cleaning box rotation switching mechanism
Also included are n cartridges 505; mounting n cartridges 505 and one cartridge unit along a ring shape; the cartridge 505 and the cartridge unit are connected to a cartridge rotation switching mechanism.
That is, for a multi-material 3D printing apparatus, the cartridge 505 and the cleaning cartridge unit share the same set of rotation switching mechanisms, thereby reducing the complexity of the structure.
The present invention is not limited to the specific structural form of the rotation switching mechanism of the cleaning cartridge, as long as rotation switching can be achieved, and only one specific embodiment in practical application will be described below:
In order to ensure printing precision, realize the stability and levelness of the rotary switching of the material box and the cleaning box and prevent uneven thickness of printing materials in the material box during rotary switching, the invention provides a cleaning box rotary switching mechanism with fine design, wherein a main body adopts an axisymmetric structure and is assisted by adopting a slewing bearing, so that the rotary switching precision of the material box and the cleaning box is ensured.
Referring to fig. 7 and 8, the cleaning cartridge rotation switching mechanism 500 includes a rotary plate 501, a rotary bearing 502, a rotary motor 503, and a connection bracket 504;
The rotary disc 501 is horizontally arranged, a connecting bracket 504 is fixedly arranged on the lower coaxial center of the rotary disc 501, a rotating motor 503 is fixedly arranged on the lower coaxial center of the connecting bracket 504, and the rotary disc 501 is driven to horizontally rotate through the rotating motor 503;
A rotary bearing 502 is coaxially arranged at the bottom of the rotary disc 501; the slewing bearing 502 adopts an inner ring slewing bearing and an outer ring slewing bearing, and the outer ring bearing is fixed with the surface of the base 100; the inner ring bearing is fixed with the bottom surface of the rotary disc 501, and the rotary disc 501 stably rotates under the supporting action of the rotary bearing 502;
N cartridges 505 and one cleaning and air drying unit 600 are fixedly installed along the ring shape on the surface of the rotary disc 501; for example, 5 cartridges 505 and one purge air dryer unit 600 may be installed. When the rotary disc 501 rotates, the material boxes 505 and the cleaning and air drying unit 600 are driven to synchronously rotate, and when one material box 505 rotates to a printing station, the material box 505, the printing platform 202 and the ultraviolet optical unit 300 which are positioned at the printing station are positioned on the same vertical line up and down; when the cleaning and air drying unit 600 rotates to the printing station, the cleaning and air drying unit is used for cleaning and air drying the printing surface of the printing platform 202; by the rotation of the rotary plate 501, the rotation switching of each cartridge 505 and the cleaning and air drying unit 600 is realized.
The cleaning cartridge rotation switching mechanism 500 has the following features:
(1) The main body of the cleaning box rotary switching mechanism 500 adopts an axisymmetric structure and is assisted by adopting a slewing bearing, so that the precision of rotary switching of the material box and the cleaning box is ensured.
(2) The surface of the rotary tray 501 is integrated with the cartridge 505 and the cleaning and air drying unit 600, so that the cartridge 505 and the cleaning and air drying unit 600 can be switched. That is, the cartridge 505 and the cleaning and air drying unit 600 share the same set of rotary switching mechanism, and no special rotary switching mechanism design is required for the cleaning and air drying unit, so that the complexity of the equipment structure is simplified, and the equipment integration level is high.
(IV) air outlet plate rotary driving mechanism
A spreading scraping piece 404 is arranged above each bin 505 in a unique corresponding manner; the paver scraper 404 and the windout plate 606 are both connected to the windout plate rotational drive mechanism.
That is, for multi-material 3D printing devices, the paver scraper 404 and the air out-take plate 606 share the same set of rotational drive mechanisms, thereby reducing the complexity of the structure.
The invention is not limited to the specific structural form of the wind outlet plate rotation driving mechanism, as long as rotation switching can be realized, and only one specific embodiment in practical application is described below:
Referring to fig. 7 and 8, the air outlet plate rotation driving mechanism 400 includes: an air outlet plate rotating disc 401, an air outlet plate rotating bearing 402 and an air outlet plate motor 403.
Wherein, the number of the spreading scraping pieces 404, the number of the feeding units 405 and the number of the material boxes 505 are the same, one spreading scraping piece 404, one feeding unit 405 and one material box 505 are in one-to-one correspondence, in the multi-material 3D printing process, the feeding unit 405 feeds the corresponding spreading scraping piece 404, and the spreading scraping piece 404 reciprocates in the material box 505, so as to spread and scrape the material boxes 505.
N spreading scraping pieces 404 are fixedly arranged on the outer periphery of the air outlet plate rotating disc 401 in an outward extending mode; each paver scraper 404 is located above a corresponding one of the cartridges 505; each group of feeding units 405 corresponds to one of the paving scraping pieces 404 and is used for independently feeding the paving scraping pieces 404;
The air outlet plate rotating disc 401 is positioned above the rotating disc 501, and a scraping rotating bearing 402 is coaxially arranged between the air outlet plate rotating disc 401 and the rotating disc 501; wherein, the air-out plate rotating bearing 402 adopts an inner ring rotating bearing, the outer ring bearing is fixed with the rotating disc 501, and the inner ring bearing is fixed with the air-out plate rotating disc 401 and the feeding unit 405; the air outlet plate rotating disc 401 is stably rotated under the supporting action of the air outlet plate rotating bearing 402, and the air outlet plate rotating disc 401, the spreading scraping piece 404 and the feeding unit 405 synchronously move during scraping, so that the relative positions of the spreading scraping piece 404 and the corresponding feeding unit 405 are unchanged;
an air outlet plate motor 403 is fixedly arranged below the air outlet plate rotating disc 401 in a coaxial manner, and the air outlet plate rotating disc 401 is driven to rotate through the air outlet plate motor 403;
When the air outlet plate rotating disc 401 rotates, the spreading scraping piece 404 and the feeding unit 405 are driven to synchronously rotate so as to realize scraping; the air outlet plate motor 403 is fixed on the connecting bracket 504, and when the material box rotates, the air outlet plate motor 403, the air outlet plate rotating disc 401, the spreading scraping piece 404 and the feeding unit 405 are driven to form integral synchronous motion.
The wind outlet plate rotation driving mechanism 400 provided by the invention also has the following innovative design:
(4.1) Angle limiting sheet 406 and contact switch 407
In the invention, an output shaft of an air outlet plate motor 403 is sleeved with an angle limiting sheet 406, and the angle limiting sheet 406 has a fan-shaped structure; a contact switch 407 is fixedly installed on the rotation path of the angle limiting piece 406; the angle limiting piece 406 and the contact switch 407 are matched to control the forward and reverse rotation angles of the air outlet plate motor 403.
Specifically, the angle limiting piece 406 has a fan-shaped structure, and two endpoints of the fan are P1 and P2, respectively. When P1 contacts the contact switch 407, the spreading scraper 404 is located at the left side C1 of the magazine 505; then, the air outlet plate motor 403 rotates and drives the spreading scraping piece 404 and the angle limiting piece 406 to synchronously rotate, and at the moment, when the angle limiting piece 406 rotates, the fan-shaped arc line of the angle limiting piece 406 continuously contacts with the contact switch 407; the spreading scraper 404 rotates from the left side C1 position to the right side C2 position of the magazine 505;
When P2 of the angle limiting piece 406 contacts the contact switch 407, the paver scraper 404 rotates exactly to the right side C2 position of the magazine 505; then, the air outlet plate motor 403 is triggered to reversely rotate, so that the spreading scraper 404 rotates from the right side C2 position to the left side C1 position of the material box 505, meanwhile, the angle limiting sheet 406 rotates, the P1 end point is continuously close to the contact switch 407, and when the P1 end point contacts with the contact switch 407, the spreading scraper 404 just rotates to the left side C1 position of the material box 505. This is continuously cycled to effect a reciprocating oscillating motion of the pavement scraper 404 in the magazine 505.
(4.2) The feeding unit 405
Each set of feed units 405 is for feeding a corresponding cartridge 505.
Referring to fig. 9, each set of feed units 405 includes a cartridge 405A, a feed pipe 405B, and a solenoid valve 405C.
The cartridges 405A contain a printing material, and correspond to a cartridge 505, and the cartridges 405A are powered by an external air compressor, and are controlled by a solenoid valve 405C to provide individual feeding of each cartridge 405A, and to deliver the printing material to a doctor blade holder 4041 in the cartridge 505 via a delivery tube 405B.
(4.3) Spreading scraper 404
Referring to fig. 9-13, the paver scraper 404 includes: a blade holder 4041, a left blade 4042, and a right blade 4043;
the scraper frame 4041 comprises a scraper cavity 4041A and a scraper arm 4041B which is fixedly integrated with the inner side of the scraper cavity 4041A;
Wherein the scraper arm 4041B is configured to be fixed to the outer periphery of the air outlet plate rotating disk 401; in the present invention, as shown in fig. 10, the scraper arm 4041B is formed by three orthogonal planes, and is matched with the mounting groove of the air outlet plate rotating disk 401, and the scraper arm 4041B is placed in the mounting groove and locked and fixed. Therefore, the fixed end of the scraper arm 4041B is composed of three orthogonal planes, and is matched with the mounting groove composed of the three orthogonal planes, so that high repeated positioning accuracy can be realized, the three orthogonal planes are fixed by a single loose screw, complete locking with six degrees of freedom can be realized, and high stability can be realized no matter the scraper for feeding and spreading is used for rotary scraping or linear reciprocating scraping. And the thickness precision of the printing layer is not affected by the cantilever structure formed by single-side fixation.
The scraper cavity 4041A is located in the material box 505, the scraper cavity 4041A is provided with a through type hollow structure cavity, and the length and radian of the scraper cavity 4041A are matched with the inner cavity of the material box 505 and are used for reciprocating rotation along the inner cavity of the material box 505 so as to realize efficient scraping. In addition, the scraper cavity 4041A adopts an optimized open type inclined plane design, so that printing materials can be conveniently supplemented in real time by means of natural gravity in the 3D printing process.
The left side and the right side of the scraper cavity 4041A are respectively provided with a left scraper 4042 and a right scraper 4043 with adjustable heights; the left blade 4042 and the right blade 4043 are spaced from the bottom surface of the blade cavity 4041A by one print layer thickness. Wherein, the lateral wall of both sides scraper and scraper cavity 4041A, the finish machining leans on the face cooperation, has long waist hole to design on the scraper, can realize the fine setting of high accuracy and fix the locking through two screws with the clearance gauge to the realization is scraped the material layer thickness and is different.
The spreading scraping piece provided by the invention has the following advantages:
1) The integrated feeding and spreading integrated scraper is a spreading and scraping piece with double scrapers and scraper cavities for accommodating printing materials, and the traditional feeding and spreading are integrated into spreading and feeding at the same time, so that the spreading and feeding efficiency is improved;
2) The height of the scraper is adjustable, so that scraping materials with different layer thicknesses are realized, and various use requirements are met.
3) The spreading scraping piece and the air outlet plate rotating disc are installed in a matched mode through three orthogonal plane structures, and high stability of the spreading integrated scraper in the process of rotating scraping or linearly reciprocating scraping is guaranteed.
Therefore, the spreading scraping piece provided by the invention is a spreading feeding integrated scraper, can simplify the traditional 3D printing work flow of feeding before spreading into feeding and spreading at the same time, and has a simpler structure.
The design of orthogonal plane cooperation leaning surface makes the installation of supplying and laying integration scraper dismantlement realize high repeated positioning accuracy to guarantee each layer thickness uniformity in the 3D printing process, finally directly guarantee 3D and print finished product precision and structural performance.
The invention can effectively solve the problems of efficiency and printing precision commonly existing in the 3D printing industry at the present stage. The integrated scraper for spreading materials can be fixed by adopting a single loosening-preventing screw, so that high stability and high precision can be realized, and the scraper and the material box after the photo-curing 3D printing is finished can be cleaned conveniently.
(Fifth) ultraviolet optical unit 300:
In practical applications, the ultraviolet light unit 300 is also included. Referring to fig. 5, an ultraviolet light unit 300 is fixedly installed under the base 100; the printing surface of the printing platform 202 and the light emitting direction of the ultraviolet light unit 300 are coaxially arranged up and down.
Specifically, the ultraviolet optical unit 300 is fixed under the printing platform 202 by using a high-precision ultraviolet DLP optical system, and the material box between the ultraviolet optical unit 300 and the printing platform 202 is a material box of a printing station, so that the material boxes of the printing platform 202, the ultraviolet optical unit 300 and the printing station are arranged in a longitudinal straight line.
The ultraviolet optical unit 300 passes through the optical glass at the bottom of the material box from bottom to top, and performs projection curing on the printing material in the material box, so that the single layer thick printing material is cured to the bottom printing surface of the printing platform 202 according to the set shape.
The invention also provides a method for the multi-material 3D printing cleaning device, which comprises the following steps:
Step 1, in the multi-material 3D printing process, each time after the bottom surface of the printing platform is bonded and the printing material is solidified and molded once, the cleaning box rotating switching mechanism controls the cleaning box unit to enable the cleaning box unit to rotate to be right below the printing platform 202;
Step 2, the platform lifting mechanism 201 controls the printing platform 202 to descend, so that the solidified and molded parts bonded on the bottom surface of the printing platform are immersed into the cleaning liquid in the cleaning box unit, and ultrasonic cleaning is carried out on the solidified and molded parts;
step 3, after cleaning, the platform lifting mechanism 201 controls the printing platform 202 to rise to a certain height, so that the solidified and molded part on the bottom surface of the printing platform 202 is positioned above the air outlet plate 606;
And 4, driving the air outlet plate 606 to swing below the curing forming part by the air outlet plate rotary driving mechanism, and enabling the air outlet of the air outlet plate 606 to directly blow to the curing forming part, so as to realize the air drying function of the curing forming part at the bottom of the printing platform 202.
The device and the method for cleaning the multi-material 3D printing have the following advantages:
adopt rotatory switching mode to realize the control to wasing air-drying device, in whole 3D printing and washs air-drying process, print platform position is motionless to help improving print platform's printing precision. In addition, the cleaning and air-drying device has the advantages of integrating cleaning and air-drying functions, being various in functions, and performing air-drying after cleaning the printed matter, so that the printing materials are prevented from being polluted each other in the execution process of the printing task, and the quality of the printed product is guaranteed.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.
Claims (3)
1. A cleaning device for multi-material 3D printing, comprising: a base (100), a printing platform unit (200) and a cleaning and air drying unit (600);
The printing platform unit (200) is fixedly arranged above the base (100); the printing platform unit (200) comprises a platform lifting mechanism (201) and a printing platform (202); the platform lifting mechanism (201) is a ball screw lifting mechanism;
The cleaning and air drying unit (600) comprises a cleaning box unit, a cleaning box rotary switching mechanism, an air outlet plate (606) and an air outlet plate rotary driving mechanism; the cleaning box rotating switching mechanism is connected with the cleaning box unit and is used for rotating the cleaning box unit to the position right below the printing platform (202); the air outlet plate rotary driving mechanism is connected with the air outlet plate (606) and is used for driving the air outlet plate (606) to horizontally rotate; the air outlet plate (606) is positioned above the cleaning box unit;
the cleaning box unit adopts a multi-material 3D printing self-leveling ultrasonic cleaning box and comprises a cleaning box (601), an ultrasonic generator (602), a liquid bubble generator (603), a self-leveling liquid outlet (604) and a self-leveling liquid return port (605);
The bottom of the cleaning box (601) is provided with an ultrasonic generator (602); two sides of the cleaning box (601) are respectively provided with a self-leveling liquid outlet (604) and a self-leveling liquid return port (605); a vacuole generator (603) is arranged between the self-leveling liquid outlet (604) and the self-leveling liquid return port (605);
The self-leveling liquid outlet (604) and the self-leveling liquid return outlet (605) are respectively connected with a peristaltic pump to realize the circulation of cleaning liquid; the circulation mode is as follows: the cleaning liquid is positioned in the liquid container, enters the cleaning box through the peristaltic pump through the self-leveling liquid return port (605), is pumped out from the self-leveling liquid outlet (604) through the peristaltic pump and is filtered, and finally, the filtered cleaning liquid is returned into the liquid container; the self-leveling liquid outlet (604) and the self-leveling liquid return port (605) are designed to be plane self-leveling, so that the cleaning liquid can stably flow in and out;
The liquid bubble generator (603) comprises a liquid bubble generator body (6031), the liquid bubble generator body (6031) is of a cavity structure, and a plurality of exhaust holes (6032) communicated with the cavity structure are formed in the surface of the liquid bubble generator body (6031); the back of the liquid bubble generator body (6031) is provided with an air inlet hole (6033) communicated with the cavity structure; the air inlet hole (6033) is connected with an air source;
Through the connection gas circuit, the gas generates larger bubbles along the round holes on the surface of the liquid bubble generator (603), so that deposited particles in the liquid in the cleaning box are uniformly distributed on the surface of the liquid and enter the self-leveling liquid outlet (604) for filtering along with the circulation of the liquid, thereby ensuring the cleaning effect of the cleaning liquid in the cleaning box;
Also comprises n cartridges (505); -mounting n of said cartridges (505) and one of said cartridge units in a ring shape; the material box (505) and the cleaning box unit are connected with the cleaning box rotary switching mechanism;
A spreading scraping piece (404) is arranged above each material box (505) in a unique corresponding manner; the spreading scraper (404) and the air outlet plate (606) are connected to the air outlet plate rotary driving mechanism; the paver scraper (404) comprises: a doctor blade holder (4041), a left doctor blade (4042) and a right doctor blade (4043); the scraper rest (4041) comprises a scraper cavity (4041A) and a scraper arm (4041B) which is fixedly integrated with the inner side of the scraper cavity (4041A); the left side and the right side of the scraper cavity (4041A) are respectively provided with a left scraper (4042) and a right scraper (4043) with adjustable heights.
2. The cleaning device for multi-material 3D printing according to claim 1, wherein the platform lifting mechanism (201) is a ball screw lifting mechanism comprising: a lifting motor (2011), a screw rod (2012), a sliding block (2013), an upper limit switch (2014) and a lower limit switch (2015);
The screw rod (2012) is vertically arranged; the sliding block (2013) is sleeved on the screw rod (2012); the outside of the sliding block (2013) is fixedly provided with the horizontally arranged printing platform (202); the lifting motor (2011) is used for driving the screw rod (2012) to rotate; and at the upper limit position and the lower limit position of the sliding block (2013) in sliding, the upper limit switch (2014) and the lower limit switch (2015) are respectively arranged.
3. A method for a multi-material 3D printing cleaning device according to any one of claims 1-2, comprising the steps of:
Step 1, in the multi-material 3D printing process, after one-time printing material solidification molding is completed by bonding the bottom surface of a printing platform, a cleaning box rotation switching mechanism controls a cleaning box unit, so that the cleaning box unit rotates to be right below the printing platform (202);
Step 2, a platform lifting mechanism (201) controls a printing platform (202) to descend, so that a solidified and formed part bonded on the bottom surface of the printing platform is immersed into cleaning liquid in a cleaning box unit, and ultrasonic cleaning is carried out on the solidified and formed part;
Step 3, after cleaning, the platform lifting mechanism (201) controls the printing platform (202) to rise to a certain height, so that the solidified and formed part on the bottom surface of the printing platform (202) is positioned above the air outlet plate (606);
and 4, driving the air outlet plate (606) to swing below the curing forming part by the air outlet plate rotary driving mechanism, and enabling air outlet of the air outlet plate (606) to directly blow to the curing forming part, so as to realize the air drying function of the curing forming part at the bottom of the printing platform (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066521.1A CN114347478B (en) | 2022-01-20 | 2022-01-20 | Cleaning device and method for multi-material 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066521.1A CN114347478B (en) | 2022-01-20 | 2022-01-20 | Cleaning device and method for multi-material 3D printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114347478A CN114347478A (en) | 2022-04-15 |
| CN114347478B true CN114347478B (en) | 2024-05-28 |
Family
ID=81091896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210066521.1A Active CN114347478B (en) | 2022-01-20 | 2022-01-20 | Cleaning device and method for multi-material 3D printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114347478B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157670B (en) * | 2022-06-21 | 2023-12-22 | 江苏乾度智造高科技有限公司 | Feeding system for industrial 3D printing |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708818A (en) * | 2013-12-13 | 2015-06-17 | 三纬国际立体列印科技股份有限公司 | Three-dimensional printing device |
| KR20160018096A (en) * | 2014-08-08 | 2016-02-17 | 주식회사 캐리마 | 3d printing apparatus and method using composite material |
| CN205951298U (en) * | 2016-08-24 | 2017-02-15 | 安徽蓝蛙电子科技有限公司 | 3D print platform's ultrasonic cleaning cabin module |
| WO2018092952A1 (en) * | 2016-11-18 | 2018-05-24 | 이병극 | 3d shaping system and post-treatment apparatus for 3d object |
| CN207874862U (en) * | 2017-12-27 | 2018-09-18 | 科大天工智能装备技术（天津）有限公司 | A kind of continuously shaped increasing material manufacturing laser formation equipment of multizone |
| CN109795114A (en) * | 2019-03-01 | 2019-05-24 | 浙江大学 | Rotary more material photocuring 3D printing equipment |
| CN209174509U (en) * | 2018-12-11 | 2019-07-30 | 广东好菇婆食品有限公司 | A kind of ultrasonic wave bubbling cleaning device |
| CN110328847A (en) * | 2019-08-27 | 2019-10-15 | 上海幻嘉信息科技有限公司 | A kind of full-color photocuring 3D printer |
| CN110585792A (en) * | 2019-10-25 | 2019-12-20 | 微一绿色环保科技（海盐）有限公司 | Novel cleaning liquid tank |
| KR102078575B1 (en) * | 2018-08-20 | 2020-02-17 | 주식회사 덴티스 | 3 Dimension Printer |
| CN111531876A (en) * | 2020-02-29 | 2020-08-14 | 湖南大学 | Multi-axis photocuring 3D printing device and method capable of achieving mixed material use |
| CN211762249U (en) * | 2019-10-26 | 2020-10-27 | 武汉因泰莱激光科技有限公司 | Multi-material 3D printing equipment |
| CN212093516U (en) * | 2020-03-10 | 2020-12-08 | 常州惠而自动化设备有限公司 | Cleaning line feeding structure |
| CN213257100U (en) * | 2020-08-27 | 2021-05-25 | 南京铖联激光科技有限公司 | Powder paving device for 3D printing equipment |
| CN112873831A (en) * | 2021-02-05 | 2021-06-01 | 华南理工大学 | Multi-material-surface exposure biological printing device and control method |
| WO2021104543A2 (en) * | 2021-01-27 | 2021-06-03 | 昆山英福斯三维科技有限公司 | Automatic washing device for 3d printed piece |
| CN217144924U (en) * | 2022-01-20 | 2022-08-09 | 中国科学院空间应用工程与技术中心 | Be used for many materials 3D to print belt cleaning device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100426087B1 (en) * | 2001-10-12 | 2004-04-06 | 삼성전자주식회사 | Printhead cleaning apparatus and ink jet printer having the same |
| DE102015003372A1 (en) * | 2015-03-17 | 2016-09-22 | Voxeljet Ag | Method and device for producing 3D molded parts with double recoater |
| US10189057B2 (en) * | 2016-07-08 | 2019-01-29 | General Electric Company | Powder removal enclosure for additively manufactured components |
| JP2019530603A (en) * | 2016-10-10 | 2019-10-24 | ポストプロセス テクノロジーズ インク | Self-modifying agitation method and apparatus for additive manufacturing and support removal in 3D printed materials |
| GR1009361B (en) * | 2017-05-11 | 2018-09-17 | Κωνσταντινος Ηλια Θεοδοσοπουλος | A system for the production of tablets, granules and capsules via three-dimensional printing |
| CN111032316B (en) * | 2017-06-09 | 2022-07-26 | 速科特私人有限公司 | Method and apparatus for decentralized, automated additive manufacturing |
| CN107323089B (en) * | 2017-08-10 | 2019-01-18 | 上海幂方电子科技有限公司 | Microelectronics printer |
| CN109421267A (en) * | 2017-09-04 | 2019-03-05 | 东台精机股份有限公司 | The 3 D-printing device and its operating method of dust recycling |
| WO2019162759A2 (en) * | 2018-02-23 | 2019-08-29 | Eli Kritchman | 3d printing of inorganic material in round inkjet printing configuration |
-
2022
- 2022-01-20 CN CN202210066521.1A patent/CN114347478B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708818A (en) * | 2013-12-13 | 2015-06-17 | 三纬国际立体列印科技股份有限公司 | Three-dimensional printing device |
| KR20160018096A (en) * | 2014-08-08 | 2016-02-17 | 주식회사 캐리마 | 3d printing apparatus and method using composite material |
| CN205951298U (en) * | 2016-08-24 | 2017-02-15 | 安徽蓝蛙电子科技有限公司 | 3D print platform's ultrasonic cleaning cabin module |
| WO2018092952A1 (en) * | 2016-11-18 | 2018-05-24 | 이병극 | 3d shaping system and post-treatment apparatus for 3d object |
| CN207874862U (en) * | 2017-12-27 | 2018-09-18 | 科大天工智能装备技术（天津）有限公司 | A kind of continuously shaped increasing material manufacturing laser formation equipment of multizone |
| KR102078575B1 (en) * | 2018-08-20 | 2020-02-17 | 주식회사 덴티스 | 3 Dimension Printer |
| CN209174509U (en) * | 2018-12-11 | 2019-07-30 | 广东好菇婆食品有限公司 | A kind of ultrasonic wave bubbling cleaning device |
| CN109795114A (en) * | 2019-03-01 | 2019-05-24 | 浙江大学 | Rotary more material photocuring 3D printing equipment |
| CN110328847A (en) * | 2019-08-27 | 2019-10-15 | 上海幻嘉信息科技有限公司 | A kind of full-color photocuring 3D printer |
| CN110585792A (en) * | 2019-10-25 | 2019-12-20 | 微一绿色环保科技（海盐）有限公司 | Novel cleaning liquid tank |
| CN211762249U (en) * | 2019-10-26 | 2020-10-27 | 武汉因泰莱激光科技有限公司 | Multi-material 3D printing equipment |
| CN111531876A (en) * | 2020-02-29 | 2020-08-14 | 湖南大学 | Multi-axis photocuring 3D printing device and method capable of achieving mixed material use |
| CN212093516U (en) * | 2020-03-10 | 2020-12-08 | 常州惠而自动化设备有限公司 | Cleaning line feeding structure |
| CN213257100U (en) * | 2020-08-27 | 2021-05-25 | 南京铖联激光科技有限公司 | Powder paving device for 3D printing equipment |
| WO2021104543A2 (en) * | 2021-01-27 | 2021-06-03 | 昆山英福斯三维科技有限公司 | Automatic washing device for 3d printed piece |
| CN112873831A (en) * | 2021-02-05 | 2021-06-01 | 华南理工大学 | Multi-material-surface exposure biological printing device and control method |
| CN217144924U (en) * | 2022-01-20 | 2022-08-09 | 中国科学院空间应用工程与技术中心 | Be used for many materials 3D to print belt cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114347478A (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114393823B (en) | Multi-material 3D printing equipment and method | |
| CN114347478B (en) | Cleaning device and method for multi-material 3D printing | |
| JP3757992B2 (en) | Coating apparatus and coating method, and color filter manufacturing method and manufacturing apparatus | |
| CN1635949A (en) | Apparatus for microdeposition of multiple fluid materials | |
| CN114393830B (en) | Rotary driving printing device and method for multi-material 3D printing | |
| CN217144924U (en) | Be used for many materials 3D to print belt cleaning device | |
| CN216683377U (en) | Self-leveling ultrasonic cleaning box for multi-material 3D printing | |
| CN216683363U (en) | Be used for 3D to print confession stone material integration scraper | |
| CN216683369U (en) | Rotary driving printing device for multi-material 3D printing | |
| JP7370373B2 (en) | Waste processing for additive manufacturing | |
| CN217144905U (en) | Multi-material 3D printing equipment | |
| JP2014221452A (en) | Coating applicator and application method | |
| CN114347479B (en) | Self-leveling ultrasonic cleaning box and cleaning method for multi-material 3D printing | |
| CN210792091U (en) | Photocuring 3D printing device | |
| EP3972760A1 (en) | Fluid management and circulation systems for use in additive manufacturing apparatuses | |
| CN112109321A (en) | Photocuring 3D printing device | |
| KR20200013169A (en) | Discharging device having nozzle clogging prevention function | |
| CN115971121B (en) | Polaroid glue removing device and application method | |
| WO2018117113A1 (en) | Liquid discharge device, application device with said discharge device, and application method | |
| CN217550340U (en) | Silica gel surface photocuring processing apparatus | |
| KR200432097Y1 (en) | Shot Blast Machine | |
| CN209022325U (en) | A kind of full-automatic knifing machine | |
| CN207357411U (en) | A kind of 3D bend glasses flush coater | |
| CN114393829B (en) | Integrated scraper for 3D printing and feeding and integrating method | |
| JP5999517B2 (en) | Nozzle cleaning blade of jet valve for dispensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |