CN216683377U

CN216683377U - Self-leveling ultrasonic cleaning box for multi-material 3D printing

Info

Publication number: CN216683377U
Application number: CN202220154245.XU
Authority: CN
Inventors: 刘晓冬; 王功; 张晓日; 李鑫
Original assignee: Technology and Engineering Center for Space Utilization of CAS
Current assignee: Technology and Engineering Center for Space Utilization of CAS
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-07
Anticipated expiration: 2032-01-20

Abstract

The utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing, which comprises: the device comprises a cleaning box, an ultrasonic generator, a liquid bubble generator, a self-leveling liquid outlet and a self-leveling liquid return port; the ultrasonic generator is arranged at the bottom of the cleaning box; the two sides of the cleaning box are respectively provided with the self-leveling liquid outlet and the self-leveling liquid return port; and the liquid bubble generator is arranged between the self-leveling liquid outlet and the self-leveling liquid return port. The utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing, which is ultrasonic cleaning and drying equipment used when different materials are switched in a multi-material 3D printing process.

Description

Self-leveling ultrasonic cleaning box for multi-material 3D printing

Technical Field

The utility model belongs to the technical field of 3D printing, and particularly relates to a self-leveling ultrasonic cleaning box for multi-material 3D printing.

Background

The 3D printing mode at the present stage mainly comprises the following steps: after the 3D printing of the part is finished, the part is immersed in the cleaning box, the part is cleaned, and the printing residual material on the surface of the part is removed. The cleaning box designed by the mode is a conventional cleaning box, the cleaning frequency is low in single work, and the cleaning target mostly takes resin as the main component without particle deposition.

Above wash the box, the function is single, can't be applicable to switching between the different materials of multiple material 3D printing in-process and print the clearance.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing, which can effectively solve the problems.

The technical scheme adopted by the utility model is as follows:

the utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing, which comprises: the device 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 the ultrasonic generator (602); the two sides of the cleaning box (601) are respectively provided with the self-leveling liquid outlet (604) and the self-leveling liquid return port (605); and the liquid bubble generator (603) is arranged between the self-leveling liquid outlet (604) and the self-leveling liquid return port (605).

Preferably, the bubble generator (603) comprises a bubble generator body (6031), the bubble generator body (6031) is of a cavity structure, and a plurality of vent holes (6032) communicated with the cavity structure are formed in the surface of the bubble generator body (6031); an air inlet hole (6033) communicated with the cavity structure is formed in the back surface of the liquid bubble generator body (6031); the air inlet hole (6033) is connected with an air source.

Preferably, an air drying unit is arranged above the cleaning box (601), and comprises an 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 box (601), 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 path electromagnetic valve; and a plurality of air outlets (606B) are formed in the upper surface of the air outlet plate (606).

Preferably, a plurality of overflow tanks (607) are arranged around the cleaning box (601); the cleaning box (601) is provided with an overflow hole (608), the overflow hole (608) is higher than the surface of the overflow tank (607), and an overflow sensor (609) is arranged in the overflow hole (608).

The self-leveling ultrasonic cleaning box for multi-material 3D printing provided by the utility model has the following advantages:

the utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing, which is ultrasonic cleaning and dry noise equipment used for switching different materials in the multi-material 3D printing process.

Drawings

Fig. 1 is a structural diagram of a self-leveling ultrasonic cleaning box for multi-material 3D printing according to the present invention;

FIG. 2 is a block diagram of a vacuole generator provided in accordance with the present invention;

fig. 3 is a structural diagram of an air outlet plate provided by the utility model;

fig. 4 is a schematic overall structure diagram of a multi-material 3D printing apparatus provided by the present invention;

fig. 5 is a schematic view of an internal structure of the multi-material 3D printing apparatus provided by the present invention after a base is hidden;

FIG. 6 is a structural diagram of the feeding, spreading and scraping integrated unit and the rotary switching type material box unit provided by the utility model at an angle;

FIG. 7 is a structural diagram of the feeding, spreading and scraping integrated unit and the rotary switching type material box unit provided by the utility model at another angle;

FIG. 8 is a structural diagram of a feeding, spreading and scraping integrated unit provided by the present invention;

FIG. 9 is a diagram of the position relationship between the spreading scraper and the material box;

FIG. 10 is a block diagram of a paver scraper provided in accordance with the present invention;

fig. 11 is a block diagram of a doctor blade holder according to the utility model;

FIG. 12 is a block diagram of a doctor blade provided in accordance with the present invention;

fig. 13 is a structural diagram of a cleaning and air-drying unit and a printing platform provided by the utility model.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present 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 merely illustrative of the utility model and are not intended to limit the utility model.

The utility model provides a self-leveling ultrasonic cleaning box and a cleaning method for multi-material 3D printing, which are ultrasonic cleaning and dry noise equipment used for switching different materials in the multi-material 3D printing process.

Specifically, whether the cleaning of the printing residues is complete or not in the 3D printing process of photocuring various materials directly influences the quality of printed products. Especially, during the light-cured molding additive manufacturing, the printing raw materials are mostly in a liquid or paste state. In order to realize multi-gradient printing of various materials, different printing materials are required to be ensured not to be polluted mutually in the process of executing a printing task. The printing surface of each printed material is free from other residue, so that printing of different materials can be realized at each layer and even at a single pixel level. The traditional cleaning mode has physical damage or incomplete cleaning to a certain degree on the surface quality of a printed product.

Therefore, the utility model designs a self-leveling ultrasonic cleaning box for multi-material 3D printing, which is a cleaning box for multi-material 3D printing, and adopts the modes of ultrasonic cleaning, a vacuole generator and an air outlet plate to ensure that printing materials cannot be polluted mutually in the process of executing a printing task, thereby ensuring the quality of printed products.

The washing and air-drying unit 600 includes: a cleaning unit and an air drying unit;

referring to fig. 1 and 2, the self-leveling ultrasonic cleaning box for multi-material 3D printing comprises a cleaning box 601, an ultrasonic generator 602, a 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; a self-leveling liquid outlet 604 and a self-leveling liquid return port 605 are respectively arranged at two sides of the cleaning box 601; a bubble generator 603 is arranged between the self-leveling liquid outlet 604 and the self-leveling liquid return port 605.

The principle is as follows:

the cleaning box 601 is made of 3D printing non-metal materials, 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 port 605 are respectively connected with a peristaltic pump to realize the circulation of the cleaning liquid. The circulation mode is as follows: the cleaning liquid is located in the liquid container, enters the cleaning box through the self-leveling liquid return port 605 through the peristaltic pump, 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. Since the self-leveling liquid outlet 604 and the self-leveling liquid return port 605 are designed to be self-leveling, the cleaning liquid can stably flow in and flow out.

The bottom of the cleaning box 601 is provided with an ultrasonic generator 602 which can generate cavitation effect for cleaning the surface of the printing piece.

The ultrasonic power is not suitable to be too high because the power of the ultrasonic generator 602 can damage the structure of the printed part. Therefore, the power of the ultrasonic generator 602 cannot make the particle deposition uniformly distributed on the liquid surface, and therefore, the particles in the solution cannot be discharged from the cleaning box 601 through the self-leveling liquid outlet 604. In order to effectively discharge and filter residual material particles in the cleaning box 601 along with the self-leveling liquid outlet 604 and ensure the cleanness of the cleaning liquid in the cleaning box 601, the utility model particularly designs the liquid bubble generator 603.

Referring to fig. 2, the bubble generator 603 includes a bubble generator body 6031, the bubble generator body 6031 is a cavity structure, and a plurality of vent holes 6032 communicated with the cavity structure are formed on a surface of the bubble generator body 6031; an air inlet 6033 communicated with the cavity structure is formed in the back surface of the liquid bubble generator body 6031; the air inlet 6033 is connected with an air source.

By connecting the gas circuit, gas is enabled to generate larger bubbles along the circular holes on the surface of the 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 along with the circulation of the liquid for filtering, thereby ensuring that the cleaning liquid in the cleaning box keeps a good cleaning effect and can work for a long time without replacing the cleaning liquid.

In addition, in the present invention, a plurality of circular holes are designed around the cleaning box as overflow slots 607, which can store the overflow liquid and prevent the cleaning liquid from splashing to other places of the equipment. 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 too much cleaning liquid is caused by some abnormal reason in the cleaning box, the liquid can enter the overflow hole 608 to trigger the overflow sensor 609, thereby suspending the cleaning system and avoiding the damage or pollution of the printing equipment caused by too much overflow or outflow.

In addition, in the present invention, an air drying unit is disposed above the cleaning box 601, and referring to fig. 3, the air drying unit includes an 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 an air inlet 606A, and the air inlet 606A is connected with an air source through an air channel 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, through swinging, the air drying function of the printing surface at the bottom of the printing platform is achieved.

The air outlet plate is designed into a porous integrated type face air outlet structure, so that the problem of physical damage to a printed piece caused by air outlet of a traditional air nozzle is greatly reduced; in addition, the multi-hole type inheritance surface air outlet device has the advantages that the air outlet air drying area is large, and the air drying efficiency and the air drying effect are effectively improved.

The utility model also provides a cleaning method for the multi-material 3D printing self-leveling ultrasonic cleaning box, which comprises the following steps:

step 1, in the multi-material 3D printing process, after the bottom surface of a printing platform is bonded to finish one-time printing material curing molding, a self-leveling ultrasonic cleaning box is controlled to rotate to the position right below the printing platform, the printing platform is controlled to descend, so that curing molded parts are immersed into a cleaning box 601, and the curing molded parts are subjected to ultrasonic cleaning through the cleaning box 601;

in the step 1, the curing and molding part is ultrasonically cleaned through the cleaning box 601, which specifically comprises the following steps:

the self-leveling liquid outlet 604 and the self-leveling liquid return port 605 are respectively connected with a peristaltic pump to realize the circulation of the cleaning liquid, and the circulation mode is as follows: cleaning liquid is filled in an external liquid container, enters the cleaning box 601 through the self-leveling liquid return port 605 through the peristaltic pump, 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; because the self-leveling liquid outlet 604 and the self-leveling liquid return port 605 are designed to be self-leveling, the cleaning liquid can stably flow in and flow out;

an ultrasonic generator 602 is arranged at the bottom of the cleaning box 601, and generates a cavitation effect to act on the surface of the printed piece immersed in the cleaning liquid of the cleaning box 601, so as to clean the surface of the printed piece;

in the cleaning liquid circulation process, the following mode is adopted, so that the particles are uniformly distributed on the surface of the cleaning liquid and flow out from the self-leveling liquid outlet 604 through the cleaning liquid circulation, and the cleanliness of the cleaning liquid in the cleaning box 601 is ensured:

the air inlet 6033 of the bubble generator 603 is connected with an air source, and the air source enables air to generate bubbles along the round hole on the surface of the bubble generator 603, so that deposited particles in the cleaning box 601 are uniformly distributed on the surface of the cleaning solution.

Step 2, after cleaning, controlling the printing platform to ascend by a certain height, so that the solidified material on the bottom surface of the printing platform is positioned above the air outlet plate 606, and air-drying the solidified and formed parts on the bottom surface of the printing platform through air outlet of the air outlet plate 606;

and 3, carrying out next bottom surface bonding molding on the printing platform, and then carrying out cleaning and air drying operation, so that the multi-material 3D printing is completed continuously.

Therefore, the utility model provides a self-leveling ultrasonic cleaning box and a cleaning method for multi-material 3D printing, which are ultrasonic cleaning and dry noise equipment used for switching different materials in the multi-material 3D printing process.

The utility model provides a self-leveling ultrasonic cleaning box for multi-material 3D printing and a cleaning method, which are ultrasonic cleaning and noise drying equipment used for switching different materials in the multi-material 3D printing process.

Use many materials 3D printing apparatus of this self-leveling ultrasonic cleaning box, refer to fig. 4, mainly include: the device comprises a base 100, a printing platform unit 200, an ultraviolet optical unit 300, a feeding, spreading and scraping integrated unit 400, a rotary switching type material box unit 500 and a cleaning and air drying unit 600. The cleaning and air-drying unit 600 is the self-leveling ultrasonic cleaning box provided by the utility model. This many materials 3D printing apparatus is a print platform unit 200 rigidity, through rotatory switching formula magazine unit 500 realize with different printing material's magazine or wash the printing station that air-dry unit 600 rotation switching under print platform unit 200, realize that 3D prints or washs and air-dries the middleware of print platform bottom surface solidification, through 3D printing and abluent cross coordination, realize that many materials 3D prints.

According to the utility model, the precision of multi-material 3D printing is effectively improved by the fine design of the printing platform unit 200, the ultraviolet optical unit 300, the feeding, spreading and scraping integrated unit 400, the rotary switching type material box unit 500 and the cleaning and air drying unit 600.

The following describes the structural components of the present invention in detail:

printing platform unit 200:

the printing table unit 200 is fixedly mounted above the base 100. During the 3D printing, the position of the printing platform unit 200 is fixed.

Referring to fig. 13, the printing platform unit 200 includes a platform elevating mechanism 201 and a printing platform 202; the printing platform 202 is driven by the platform lifting mechanism 201 to perform lifting movement;

specifically, platform elevating system 201 is ball screw elevating system, includes: the lifting motor 2011, the screw 2012, the slider 2013, the upper limit switch 2014 and the lower limit switch 2015;

the screw rod 2012 is vertically arranged; a slider 2013 is sleeved on the screw rod 2012; a horizontally arranged printing platform 202 is fixedly arranged outside the slider 2013; the lifting motor 2011 is used for driving the screw rod 2012 to rotate; at the upper limit position and the lower limit position where the slider 2013 slides, an upper limit switch 2014 and a lower limit switch 2015 are respectively installed, so that the position limit of the printing platform 202 is limited.

(II) ultraviolet optical unit 300:

referring to fig. 5, an ultraviolet optical unit 300 is fixedly installed below a base 100; the printing surface of the printing platform 202 and the light emitting direction of the ultraviolet optical unit 300 are coaxially arranged in an up-down opposite manner.

Specifically, the ultraviolet optical unit 300 adopts a high-precision ultraviolet DLP optical system, and is fixed under the printing platform 202, and the material box located between the ultraviolet optical unit 300 and the printing platform 202 is a material box of the printing station, so that the printing platform 202, the ultraviolet optical unit 300 and the material box of the printing station are arranged in a straight line in the longitudinal direction.

The ultraviolet optical unit 300 projects and solidifies the printing material in the material box from bottom to top through the optical glass at the bottom of the material box, so that the single layer thickness printing material is solidified to the bottom printing surface of the printing platform 202 according to the set shape.

(iii) rotary switching magazine unit 500:

the multi-material 3D printing device provided by the utility model is a device which realizes multi-material 3D printing by switching the material boxes of different printing materials to the printing stations right below the printing platform 202 through the rotation switching of the material boxes with the position of the printing platform 202 fixed. In order to ensure the printing precision, realize the stability and levelness of the rotation switching of the material box and prevent the uneven thickness of the printing material in the material box during the rotation switching, the utility model provides the rotation switching type material box unit with the fine design.

Referring to fig. 6 and 7, the rotation switching magazine unit 500 includes a rotary disk 501, a rotary bearing 502, a rotary motor 503, a connecting bracket 504, and n magazines 505;

the rotary disc 501 is horizontally arranged, a connecting bracket 504 is fixedly arranged coaxially below the rotary disc 501, a rotating motor 503 is fixedly arranged coaxially below the connecting bracket 504, and the rotary disc 501 is driven to rotate horizontally by the rotating motor 503;

the bottom of the rotary disk 501 is coaxially provided with a rotary bearing 502; wherein, the slewing bearing 502 adopts an inner and 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 disk 501, and the rotary disk 501 rotates stably under the supporting action of the rotary bearing 502;

n material boxes 505 and a cleaning and air-drying unit 600 are fixedly arranged on the surface of the rotary disk 501 along the ring shape; for example, 5 cartridges 505 and one purge seasoning unit 600 may be installed. When the rotary disk 501 rotates, each material box 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 from top to bottom; 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; rotation of the turntable 501 switches between the respective magazines 505 and the wash and air-dry unit 600.

The rotary switching magazine unit 500 has the following features:

(1) the main body of the rotary switching type material box unit adopts an axisymmetric structure and adopts a slewing bearing for assistance, so that the precision of rotary switching of the material box is ensured.

(2) The surface of the rotary disk 501 is simultaneously integrated with the material box 505 and the cleaning and air-drying unit 600, so that the material box 505 and the cleaning and air-drying unit 600 can be switched. That is to say, the magazine 505 and the cleaning and air-drying unit 600 share the same set of rotation switching mechanism, and there is no need to design a special rotation switching mechanism for the cleaning and air-drying unit, so that the complexity of the device structure is simplified, and the device integration level is high.

(IV) feeding, spreading and scraping integrated unit 400:

the feeding, spreading and scraping integrated unit 400 is used for independently feeding, spreading and scraping each magazine 505 in the rotary switching magazine unit 500.

Referring to fig. 6, 7 and 8, the feeding, spreading and scraping integrated unit 400 includes: a scraping rotary disk 401, a scraping rotary bearing 402, a scraping motor 403, a paving scraping piece 404 and n groups of feeding units 405.

Wherein, the setting quantity of the paving material scraping pieces 404, the setting quantity of the feeding units 405 and the setting quantity of the material boxes 505 are the same, one paving material 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 units 405 feed the corresponding paving material scraping pieces 404, and the paving material scraping pieces 404 reciprocate in the material boxes 505 to realize paving and scraping of the material boxes 505. N spreading scraping pieces 404 extend outwards from the periphery of the scraping rotating disc 401 and are fixedly mounted; each spreading scraper 404 is positioned above a corresponding one of the magazines 505; each group of feeding units 405 corresponds to one spreading scraping piece 404 and is used for independently feeding the spreading scraping pieces 404;

the scraping rotating disc 401 is positioned above the rotary disc 501, and a scraping rotating bearing 402 is coaxially arranged between the scraping rotating disc 401 and the rotary disc 501; the scraping rotary bearing 402 is an inner ring and outer ring rotary bearing, the outer ring bearing is fixed with the rotary disc 501, and the inner ring bearing is fixed with the scraping rotary disc 401 and the feeding unit 405; through the supporting action of the scraping rotary bearing 402, the scraping rotary disc 401 rotates stably during scraping, and the scraping rotary disc 401, the paving scraping piece 404 and the feeding unit 405 move synchronously during scraping, so that the relative positions of the paving scraping piece 404 and the corresponding feeding unit 405 are guaranteed to be unchanged;

a scraping motor 403 is coaxially and fixedly arranged below the scraping rotary disk 401, and the scraping rotary disk 401 is driven to rotate through the scraping motor 403;

when the scraping rotating disc 401 rotates, the paving scraping piece 404 and the feeding unit 405 are driven to synchronously rotate to realize scraping; the scraping motor 403 is fixed to the connecting bracket 504 of the rotation switching type magazine unit 500, and when the rotation switching type magazine unit 500 performs a rotation motion, the scraping motor 403, the scraping rotating disk 401, the paving scraping member 404 and the feeding unit 405 are driven to perform an integral synchronous motion.

For the feeding, spreading and scraping integrated unit 400 provided by the utility model, the following innovative design is also provided:

(4.1) Angle restriction piece 406 and contact switch 407

In the utility model, an output shaft of a scraping motor 403 is sleeved with an angle limiting sheet 406, and the angle limiting sheet 406 is of a fan-shaped structure; a contact switch 407 is fixedly mounted on a rotation path of the angle limiting piece 406; the forward and reverse rotation angles of the scraping motor 403 are controlled by the cooperation of the angle limiting piece 406 and the contact switch 407.

Specifically, the angle limiting piece 406 has a fan-shaped structure, and two end points of the fan-shaped structure are P1 and P2. When the P1 contacts the contact switch 407, the spreading scraper 404 is located at the left C1 position of the magazine 505; then, the scraping 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 sector arc line of the angle limiting piece is continuously contacted with the contact switch 407; the spreading scraper 404 rotates from the left C1 position to the right C2 position of the magazine 505;

when the P2 of the angle limiting piece 406 contacts the contact switch 407, the spreading scraper 404 rotates to the right C2 position of the magazine 505; then, the scraping motor 403 is triggered to rotate reversely, so that the spreading scraping piece 404 rotates from the position of the right side C2 of the material box 505 to the position of the left side C1, meanwhile, the angle limiting piece 406 rotates, the end point of the P1 is continuously close to the contact switch 407, and when the end point of the P1 is in contact with the contact switch 407, the spreading scraping piece 404 just rotates to the position of the left side C1 of the material box 505. The above-mentioned steps are repeated continuously, so that the reciprocating swing motion of the spreading scraping piece 404 in the material box 505 is realized.

(4.2) feed Unit 405

Each set of supply units 405 is used to supply one corresponding magazine 505.

Referring to fig. 8, each set of feed unit 405 includes a cartridge 405A, a feed delivery pipe 405B, and a solenoid valve 405C.

The cartridge 405A contains a printing material, corresponds to a cartridge 505, and is powered by air pressure provided by an external air compressor, and is controlled by an electromagnetic valve 405C to feed each cartridge 405A separately, and the printing material is conveyed into a scraper rack 4041 in the cartridge 505 through a conveying pipe 405B.

(4.3) spreading scraper 404

Referring to fig. 9-12, the windrow wiper 404 includes: a blade holder 4041, a left blade 4042, and a right blade 4043;

the blade holder 4041 includes a blade cavity 4041A and a blade arm 4041B fixedly integrated with the inside of the blade cavity 4041A;

the scraper arm 4041B is used for fixing with the periphery of the scraping rotating disk 401; in the present invention, as shown in fig. 10, the scraper arm 4041B is formed by three orthogonal planes, and is fitted into the mounting groove of the scraper rotary disk 401, and the scraper arm 4041B is inserted into 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 precision can be realized, the three orthogonal planes are fixed by a single release screw, six-degree-of-freedom complete locking can be realized, and high stability can be realized no matter the material scraping integrated scraper is rotated or linearly and repeatedly scraped. And the thickness precision of the printing layer cannot be influenced due to the cantilever structure formed by fixing the single side.

The scraper cavity 4041A is located inside one material box 505, the scraper cavity 4041A is provided with a through 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 used for reciprocating rotation along the inner cavity of the material box 505 to realize efficient scraping. In addition, scraper cavity 4041A adopts the design of optimizing open type inclined plane, and the material can be carried out in real time to the printing material dependence natural gravity of being convenient for in 3D printing process and supply.

The left and right sides 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 one print layer thick from the bottom surface of the blade cavity 4041A. Wherein, the side wall of both sides scraper and scraper cavity 4041A, the finish machining leans on the face cooperation, and the design has long waist hole on the scraper, can realize high accuracy fine setting and fix locking through two screws with the clearance gauge to realize scraping the bed thickness difference.

The spreading and scraping piece provided by the utility model has the following advantages:

1) the material spreading and scraping piece is provided with double scrapers and a scraper cavity for accommodating printing materials, integrates a material supplying and spreading integrated scraper, integrates traditional material supplying and spreading into material spreading and material supplying at the same time, and improves the efficiency of material spreading and material supplying;

2) the height of the scraper is adjustable, so that scraping materials with different layer thicknesses is realized, and various use requirements are met.

3) The spreading and scraping part and the scraping rotating disc are installed in a matched mode through three orthogonal plane structures, and high stability of the spreading and scraping integrated scraper in rotating scraping or linear reciprocating scraping is guaranteed.

Therefore, the material spreading and scraping piece is an integrated scraper for spreading materials, the work flow of material feeding and material spreading in the traditional 3D printing process can be simplified into the process of feeding and material spreading at the same time, and the structure is simpler.

Orthogonal plane cooperation is leaned on the design of face, makes the integrated scraper of confession stone material dismantles the installation and realize high repeated positioning accuracy to each layer thickness uniformity in the assurance 3D printing process finally directly guarantees 3D and prints finished product precision and structural performance.

The utility model 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 adopts a single loose screw fixation, can realize high stability and high precision, and is convenient for cleaning the scraper and the material box after the photocuring 3D printing is finished.

Referring to fig. 13, the operation principle of the cleaning and drying unit 600 is as follows:

the surface of the rotary disk 501 is divided into 6 stations, wherein five stations are material boxes, and one station is a cleaning and air-drying unit 600. One for each printing material.

The rotary disk 501 rotates to rotate the material box corresponding to the currently required printing material to the printing station below the printing platform;

the printing platform is lowered into the material box, and the printing material with a single layer thickness is solidified to the bottommost surface of the printing platform 202 according to a set shape through the matching of the printing platform and the ultraviolet optical unit 300, so that the printing is finished;

the printing platform is lifted and the photoelectric switch is triggered to enter a cleaning link:

the rotary disc 501 rotates to move the cleaning box to a printing station below the printing platform;

and the printing platform is lowered into the cleaning box, and the printing residual materials on the bottom surface of the printing platform are cleaned by the ultrasonic waves and the cleaning liquid in the cleaning box.

After the cleaning is finished, the printing platform is lifted to a certain height to the upper side of the air outlet plate, the material scraping rotating disc 401 drives the air outlet plate 606 to swing, and the air outlet plate 606 reciprocates to dry the printing cleaning surface at the bottom of the printing platform.

In the cleaning process, if the printing platform program is crashed and moved uncontrollably, the printing platform is powered off and suddenly stopped if the printing platform program touches the upper limit and the lower limit.

Therefore, the cleaning and air-drying unit provided by the utility model has the following characteristics:

1) the ultrasonic generator and the liquid bubble generator are matched to generate low-frequency bubbles, so that particles are uniformly distributed on the surface of the liquid, and the particles in the solution are discharged from the cleaning box through the self-leveling structure, so that the cleaning of the cleaning liquid in the cleaning box is ensured, and the cleaning liquid is prevented from being polluted;

2) the air outlet plate is designed into a porous integrated type face air outlet structure, so that the problem of physical damage to a printed piece caused by air outlet of a traditional air nozzle is greatly reduced; in addition, the multi-hole type inheritance surface air outlet device has the advantages that the air outlet air drying area is large, and the air drying efficiency and the air drying effect are effectively improved.

The device is reasonable in structural design, high in integration level, convenient to operate and high in practicability. The ultrasonic cleaning, the vacuole generator and the air outlet plate are adopted, so that the vacuole generator can ensure that cleaning sediments are not precipitated in the ultrasonic cleaning pool when the cleaning liquid is recycled, and the quality of the cleaning liquid at each time is ensured.

The air outlet of the air drying plate is used for air-drying the cleaning surface, so that no liquid or residual materials exist on the printed piece.

The cleaning device realizes multiple cleaning modes at the same position and integration at different heights, reduces the time of the whole cleaning process and improves the working efficiency when realizing the superposition of the multiple cleaning modes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims

1. A self-leveling ultrasonic cleaning box for multi-material 3D printing, characterized by comprising: the device 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);

2. The self-leveling ultrasonic cleaning box for multi-material 3D printing according to claim 1, wherein the bubble generator (603) comprises a bubble generator body (6031), the bubble generator body (6031) is of a cavity structure, and a plurality of vent holes (6032) communicated with the cavity structure are formed in the surface of the bubble generator body (6031); an air inlet hole (6033) communicated with the cavity structure is formed in the back surface of the liquid bubble generator body (6031); the air inlet hole (6033) is connected with an air source.

3. The ultrasonic cleaning box for multi-material 3D printing self-leveling according to claim 1, wherein an air drying unit is arranged above the cleaning box (601), and the air drying unit comprises an air outlet plate (606);

4. The self-leveling ultrasonic cleaning box for multi-material 3D printing according to claim 1, wherein a plurality of overflow tanks (607) are arranged around the cleaning box (601); the cleaning box (601) is provided with an overflow hole (608), the overflow hole (608) is higher than the surface of the overflow tank (607), and an overflow sensor (609) is arranged in the overflow hole (608).