CN111113898A - 3D printer nozzle cleaning system and cleaning method thereof - Google Patents
3D printer nozzle cleaning system and cleaning method thereof Download PDFInfo
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- CN111113898A CN111113898A CN201911240148.1A CN201911240148A CN111113898A CN 111113898 A CN111113898 A CN 111113898A CN 201911240148 A CN201911240148 A CN 201911240148A CN 111113898 A CN111113898 A CN 111113898A
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- wax
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/35—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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Abstract
The invention discloses a 3D printer nozzle cleaning system which is installed on a 3D printer and comprises a cleaning assembly for cleaning a nozzle, wherein the cleaning assembly comprises a scraping blade for cleaning the nozzle and a waste material pool for containing waste materials cleaned from the nozzle, and the scraping blade is installed in the waste material pool. The cleaning method comprises the following steps: clean subassembly perhaps removes to the print platform below through autonomous motion mechanism under print platform's drive, and the printing shower nozzle passes through the useless wax of air extrusion wax intracavity, and the doctor-bar scrapes the waste material of printing the shower nozzle bottom, and clean subassembly removes to the print platform below, and new wax gets into the wax intracavity and prints the injection, and new wax spouts to the waste material pond in. The whole cleaning process is controlled by the control system, manual operation is not needed, and the cleaning efficiency is high.
Description
Technical Field
The invention belongs to the field of 3D printing, and particularly relates to a 3D printer nozzle cleaning system and a cleaning method thereof.
Background
The 3D printer builds a three-dimensional model through an additive manufacturing method. The wax pattern 3D printer belongs to one type of additive manufacturing equipment, and the wax pattern 3D printer takes blue wax as a printing material and white wax as a supporting material, sprays high-temperature heated wax to a printing platform, and builds a model by stacking layer by layer. As the wax-spraying 3D printing model has the advantages of high precision, smooth surface and the like, the wax-spraying 3D printer is widely applied to the manufacturing industries of jewelry, aerospace, engines and the like. The printing materials used by the wax-spraying 3D printer are white wax and blue wax, the wax is filled in a container, the container is filled in an ink supply assembly, the blue wax in the container flows into the ink supply assembly and flows into a spray head through high-temperature heating, and the spray head prints the wax on a printing panel layer by layer to construct a three-dimensional model.
After the printing of the existing wax pattern 3D printer is finished, residual waste wax is left in a wax cavity in the spray head and at the position of the nozzle. These waste waxes may block the nozzles, causing the print head to fail to eject, and thus, the print head needs to be cleaned periodically. Current shower nozzle clearance mode uses artifical clearance, prints the shower nozzle in the clearance and need heat messenger wax and melt, but this kind of clearance mode leads to the clearance personnel to scald very easily, leads to the shower nozzle clearance inconvenient.
Disclosure of Invention
The invention aims to provide a 3D printer nozzle cleaning system which is full-automatic, clean and high in cleaning efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a clean system of 3D print head, installs on the 3D printer, and the 3D printer includes print platform, realizes the x axle subassembly of print platform back-and-forth movement, prints the shower nozzle and realizes printing the z axle subassembly that the shower nozzle reciprocated, its characterized in that: including the clean subassembly that is used for clean shower nozzle, clean subassembly is including being used for carrying out the doctor-bar of clearance and being used for connecing the waste material pond of the waste material that clears up from the shower nozzle greatly to the shower nozzle, and the doctor-bar is installed in the waste material pond, and the waste material pond is equipped with the discharge gate. The cleaning assembly scrapes wax at the bottom of the printing spray head into the waste pool through the scraping blade. The whole cleaning process is controlled by the control system, manual operation is not needed, and the cleaning efficiency is high.
Further, the cleaning assembly comprises a first state of stopping and a second state of cleaning the spray head, the x-axis assembly comprises an x-axis slide rail, and the cleaning assembly and the printing platform can move back and forth on the x-axis slide rail. The print platform of wax matrix 3D printer reciprocates on the x axle slide rail, and the print head sprays wax to print platform on. The cleaning assembly drives the scraping blade to scrape away waste materials at the bottom of the printing spray head by moving back and forth on the x-axis slide rail.
Further, the cleaning assembly in the first state is located at one end of the x-axis slide rail, and the cleaning assembly moves from the first state position to the second state position on the x axis through the printing platform or an autonomous moving mechanism arranged on the cleaning assembly. When cleaning is not needed, the cleaning assembly is placed at one end of the x-axis slide rail, and the movement of the printing platform on the x-axis slide rail cannot be influenced. The cleaning assembly can be connected with the printing platform, so that the printing platform drives the cleaning assembly to move on the x-axis slide rail and also can move on the x-axis slide rail through the autonomous motion mechanism.
Further, the both sides of clean subassembly are equipped with the gleitbretter, and the gleitbretter is installed in x axle slide rail department, and clean subassembly is equipped with the electro-magnet, and print platform is equipped with the magnetic sheet, and the electro-magnet matches with the magnetic sheet. When the electromagnet is electrified, the magnetic sheet is attracted, the printing platform can drive the whole cleaning assembly to slide along the x-axis slide rail, and the position of the cleaning assembly can be accurately controlled through the position of the printing platform.
Further, the autonomous movement mechanism further comprises a lifting movement assembly for realizing the lifting of the waste material pool. The elevating motion assembly can move the waste tank up and down along the z-axis direction.
Further, clean subassembly still includes the support frame, and the waste material pond passes through revolution mechanic and is rotatably connected with the support frame, and the support frame is equipped with the backup pad, and the backup pad offsets with the bottom in waste material pond, makes the waste material pond keep the horizontality, the waste material pond be equipped with temperature-detecting appearance and electric heater unit. The revolution mechanic can be the pivot, when need empty the wax in the waste material pond, applys a decurrent power to the discharge gate, and the waste material pond rotates downwards around revolution mechanic, and the wax flows from the discharge gate. After the wax flows out, the discharging hole stops applying a downward force, the waste material pool rotates upwards under the action of gravity and abuts against the supporting plate, and the waste material pool keeps a horizontal position, so that the angle between the scraping blade and the nozzle dot matrix cannot be changed. The waste reservoir is maintained within a temperature range to maintain the wax in a semi-fluid state, thus requiring a temperature detector to monitor the waste reservoir temperature. If the temperature is too high, the wax can evaporate, the gaseous wax is filled in the 3D printer, and the wax can be attached to each part of the 3D printer after cooling, so that the wax is difficult to clean. If the temperature is too low, the wax is solid, the wax in the waste material pool can not be poured out, and the wax needs to be manually cleaned. Both of which increase the difficulty of cleaning.
Further, the doctor-bar includes circular arc portion and vertical portion, and the waste material pond is equipped with doctor-bar fixed knot and constructs, and doctor-bar fixed knot constructs including doctor-bar fixing base and preforming, and the doctor-bar fixing base is equipped with the inclined plane, and vertical portion is installed between inclined plane and preforming, and preforming and vertical portion pass through the bolt fastening in inclined plane. The doctor-bar is fixed in the waste material pond through doctor-bar fixing base and preforming, dismantles the bolt and can dismantle and change the doctor-bar. The arc portion directly contacts with the nozzle dot matrix, and the shape of circular arc can laminate the nozzle dot matrix better when the doctor-bar moves, and the wax that is stained with the nozzle dot matrix is abundant clean.
Further, the scraping piece is made of a flexible material, and when the arc part scrapes the bottom surface of the printing spray head, the deformed arc part is perpendicular to the bottom surface of the printing spray head. The flexible material is preferably fluorosilicone rubber, the fluorosilicone rubber does not react with wax, and the soft texture does not damage the nozzle dot matrix. The arc part deforms after contacting with the nozzle dot matrix when moving, and the deformed arc part is perpendicular to the bottom surface of the printing nozzle, so that the cleaning effect is good.
Further, still including the collection subassembly that is used for collecting the wax waste, the collection subassembly is including album wax stone, connecting block, lead wax pipe and waste wax collecting box, and collection wax stone is equipped with depression bar and collection wax mouth, and collection wax mouth is in the discharge gate phase-match, and the depression bar is located the top of collection wax mouth, and collection wax stone and lead the wax pipe are connected to the connecting block, lead the wax union coupling waste wax collecting box, and collection wax stone, connecting block, lead wax pipe and waste wax collecting box all are equipped with electric heating assembly. When the wax is poured in the waste material pond, aim at album wax mouth with the discharge gate, collect the subassembly and move down along the z axle subassembly, depression bar extrusion material mouth, the discharge gate is lived in the waste material pond, and the waste material pond rotates downwards, and the wax in the waste material pond flows out from the discharge gate, flows through in proper order and flows into the waste wax collecting box behind collection wax piece, connecting block and the wax pipe, has realized the full-automatic that the waste wax was collected. The wax collecting block, the connecting block, the wax guide pipe and the waste wax collecting box are heated by the electric heating assembly, so that wax flowing through is kept in a semi-solidified state.
Further, the printing spray head comprises at least one spray head body, each scraping piece corresponds to one spray head body, a wax cavity is arranged in each spray head body, an air inlet pipe and a wax inlet pipe are arranged at the top of each spray head body, a nozzle dot matrix is arranged at the bottom of each spray head body, scraping piece parking areas are arranged in the front of and behind the nozzle dot matrix, and the air inlet pipes, the wax inlet cavities and the nozzle dot matrix are communicated. Before the nozzle dot matrix is scraped at clean subassembly, this internal gas that lets in through the intake pipe earlier of shower nozzle makes remaining wax in the wax cavity extrude the shower nozzle body through atmospheric pressure, and the wax of extruding flows into the waste material pond. The new wax that the shower nozzle body flowed into in the wax box through advancing the wax pipe again is that new wax gets into the wax intracavity, and the nozzle dot matrix is printed new wax and is sprayed to the waste material pond. The doctor-bar stops at doctor-bar stop district, prevents that the doctor-bar from plugging up the nozzle dot matrix when the nozzle dot matrix sprays.
A cleaning method of a 3D printer nozzle cleaning system is characterized by comprising the following steps:
(1) the printing nozzle stops supplying ink for printing;
(2) the cleaning component moves to the position below the printing spray head along the x-axis slide rail, so that the scraping blade is abutted against a scraping blade stopping area at the bottom of the spray head body;
(3) introducing air into the air inlet pipe to apply positive pressure, extruding the waste wax in the wax cavity by the air, and spraying the waste wax into a waste material pool through a nozzle lattice;
(4) the cleaning component moves, the scraping blade scrapes the nozzle dot matrix, residual wax at the nozzle dot matrix is scraped away, and the residual wax flows into the waste material pool;
(5) the cleaning assembly moves to the position below the printing spray head, new wax in a wax box of the 3D printer is extruded into a wax pipe, the new wax is filled into a wax cavity and is printed and sprayed through a nozzle dot matrix, and the new wax is sprayed into a waste material pool;
(6) the cleaning assembly moves to one end of the x-ray assembly.
Wax is remained in a wax cavity in the nozzle body, positive pressure is applied to the air inlet pipe, and the wax in the wax cavity is extruded out from the nozzle dot matrix. The whole extrusion process is usually carried out three times, and the residual wax in the wax cavity can be completely extruded. After the extrusion is finished, the scraping blade scrapes the waste wax at the lattice of the nozzle, and the cleaning of the nozzle body is finished. When the wax cavity is emptied, some gas may remain in the nozzle dot matrix, and the presence of the gas is not favorable for 3D printing, which may reduce the printing quality in the initial stage of printing. Therefore, it is necessary to fill the wax chamber with new wax stored in the wax box and discharge the gas in the nozzle array by printing and jetting the new wax, thereby stabilizing the printing quality. The whole step is controlled by a control system of the 3D printer, the control is accurate, the operation is simple, and the cleaning efficiency is high.
Further, in step (2), the cleaning assembly is driven to the position below the printing nozzle through the printing platform, and the specific steps are as follows: print platform removes the place ahead of cleaning assembly along x axle slide rail, and print platform passes through electro-magnet or gets in touch the structure and drives cleaning assembly and remove the below of printing the shower nozzle along x axle slide rail removal, prints the shower nozzle and moves down, makes the doctor-bar stop the district with the doctor-bar of shower nozzle body bottom and offsets. The cleaning assembly can be connected with the printing platform through an electromagnet or a hook structure, and the printing platform moves on the x-axis slide rail to drive the cleaning assembly to move.
Further, in step (2), the cleaning assembly moves to the position below the printing nozzle through the autonomous motion mechanism, and the specific steps are as follows: the printing platform moves to the other end of the x-axis slide rail, the cleaning assembly moves to the lower part of the printing nozzle on the x-axis slide rail through the autonomous movement mechanism, and the cleaning assembly moves upwards through the lifting movement assembly, so that the arc part of the scraping blade is abutted to the scraping blade stopping area at the bottom of the nozzle body. The cleaning assembly can also be moved on the x-axis slide by an autonomous motion mechanism and moved up and down on the z-axis by a lifting motion assembly. This kind of mode is convenient for print the in-process clean shower nozzle of printing, and the position of printing the shower nozzle is motionless, and the print platform who does not finish printing moves to the other end of x axle slide rail earlier, treats that clean subassembly accomplishes clean back, and print platform moves to and prints the shower nozzle below and continue to accomplish the inkjet and print. This step need not to drive clean subassembly through print platform, avoids print platform to drive the influence of clean subassembly time to the printing model.
Further, between the step (5) and the step (6), the method also comprises the following steps:
(a) the electric heating devices arranged on the wax collecting block, the connecting block, the wax guide pipe and the waste wax collecting box heat the wax collecting block, the connecting block, the wax guide pipe and the waste wax collecting box, so that the whole collecting assembly keeps constant temperature;
(b) the cleaning assembly moves to the side of the collecting assembly, so that a wax outlet of the waste pool is aligned to a wax collecting opening of the wax collecting block, the wax outlet is pressed by the pressing rod, the waste pool rotates downwards, and wax in the waste pool flows out of the wax outlet, flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe;
(c) after wax in the waste material pond emptys and finishes, the depression bar is kept away from to the wax outlet, and the waste material pond upwards rotates under the action of gravity, and the bottom and the backup pad in waste material pond offset, make the waste material pond keep the horizontality.
The shower nozzle is clean the back that finishes, and the waste material pond removes to the collection subassembly by, and the collection subassembly moves down under the drive of z axle subassembly, perhaps clean subassembly moves along the z axle to the upper reaches, makes the depression bar push down the discharge gate in waste material pond, and the wax in the waste material pond flows into the waste wax collecting box along collecting wax piece, connecting block and leading behind the wax pipe. When the collecting assembly moves upwards or the cleaning assembly moves downwards, the pressing rod stops pressing, and the waste material pool automatically restores to a horizontal state under the action of gravity. The process of collecting the waste wax is also controlled by the control system of the 3D printer, manual operation is not needed, and the operation is convenient and rapid.
Further, in the step (b), the printing platform drives the cleaning assembly to move to the side of the collecting assembly, so that the wax outlet of the waste pool is aligned with the wax collecting opening of the wax collecting block, the z-axis assembly moves downwards, the pressing rod presses the wax outlet, the waste pool rotates downwards, wax in the waste pool flows out of the wax outlet, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe; in the step (c), after the wax in the waste material pool is poured, the z-axis assembly moves upwards, the wax outlet is far away from the pressure rod, the waste material pool rotates upwards under the action of gravity, and the bottom of the waste material pool abuts against the supporting plate, so that the waste material pool is kept in a horizontal state.
Furthermore, in the step (b), the cleaning assembly moves to the side of the collecting assembly through the autonomous motion mechanism, so that the wax outlet of the waste pool is aligned with the wax collecting opening of the wax collecting block, the cleaning assembly moves upwards through the lifting motion assembly, so that the pressing rod presses the wax outlet, the waste pool rotates downwards, the wax in the waste pool flows out of the wax outlet, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe; in the step (c), after the wax in the waste material pool is poured, the cleaning assembly moves downwards through the lifting motion assembly, the wax outlet is far away from the pressing rod, the waste material pool rotates upwards under the action of gravity, and the bottom of the waste material pool is abutted to the supporting plate, so that the waste material pool is kept in a horizontal state.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
after the cleaning assembly cleans the spray head, the collection assembly automatically collects the waste wax in the cleaning assembly. The whole cleaning process is controlled by the control system, manual operation is not needed, and the cleaning efficiency is high. The method has the following specific beneficial effects:
1. cleaning assembly back-and-forth movement on the x axle subassembly drives waste material pond and doctor-bar and removes, scrapes the wax of the nozzle dot matrix department of shower nozzle body bottom when the doctor-bar removes, and the wax that is scraped off drips into in the waste material pond.
2. The doctor-bar is fixed in the waste material pond through doctor-bar fixing base and preforming, dismantles the bolt and can dismantle and change the doctor-bar. The arc portion directly contacts with the nozzle dot matrix, and the shape of circular arc can laminate the nozzle dot matrix better when the doctor-bar moves, and the wax that is stained with the nozzle dot matrix is abundant clean.
3. The scraper is made of fluorosilicone rubber, the fluorosilicone rubber does not react with wax, and the texture is soft and does not damage the nozzle dot matrix. The arc part deforms after contacting with the nozzle dot matrix when moving, and the deformed arc part is perpendicular to the bottom surface of the printing nozzle, so that the cleaning effect is good.
4. Can connect clean subassembly through electro-magnet or couple structure on the clean subassembly, print platform alright drive whole clean subassembly and slide along x axle slide rail, and the position accessible print platform of clean subassembly carries out accurate control.
5. The cleaning assembly can also slide on the x-axis slide and move up and down along the z-axis by an autonomous motion mechanism. This kind of mode is convenient for print the in-process clean shower nozzle of printing, and the position of printing the shower nozzle is motionless, and the print platform who does not finish printing moves to the other end of x axle slide rail earlier, treats that clean subassembly accomplishes clean back, and print platform moves to and prints the shower nozzle below and continue to accomplish the inkjet and print. This step need not to drive clean subassembly through print platform, avoids print platform to drive the influence of clean subassembly time to the printing model.
6. The collection of the wax waste of being convenient for of setting up of collection subassembly, when the wax is poured in the waste material pond, aim at a discharge gate and collect the wax mouth, collect the subassembly and move along the z axle subassembly downstream or clean subassembly along the z axial upward movement, depression bar extrusion material mouth, the discharge gate is lived in the waste material pond, the waste material pond rotates down, wax in the waste material pond flows out from the discharge gate, flow through in proper order behind collection wax piece, connecting block and the wax guide pipe and flow in the waste wax collecting box, the full-automatic of waste wax collection has been realized.
Drawings
The invention is further illustrated below with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a 3D printer nozzle cleaning system according to the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a side view of a 3D printer nozzle cleaning system of the present invention;
FIG. 4 is a schematic view of the cleaning assembly and printing platform of the present invention;
FIG. 5 is a schematic view showing the structure of a cleaning member in embodiment 1 of the present invention;
FIG. 6 is a schematic view of the structure of the invention in which the wiper blade abuts against the nozzle lattice;
FIG. 7 is a schematic view of the structure of the present invention as a wiper blade is moved across the nozzle array;
FIG. 8 is a schematic structural view of a nozzle array according to the present invention;
FIG. 9 is a cross-sectional view of a showerhead body of the present invention;
fig. 10 is a schematic structural view of a cleaning assembly in embodiment 2 of the present invention.
In the figure, 1 — the printing platform; 2-x axis assembly; 3-printing a spray head; 4-z shaft assembly; 5-a waste tank; 6-scraping the blade; 61-arc 61; 62-a vertical portion; 7-a support frame; 8-a rotating shaft; 9-a support plate; 10-a discharge hole; 11-a spray head body; 12-nozzle lattice; 13-doctor blade fixing seat; 14-tabletting; 15-x axis slide rails; 16-a slide sheet; 17-an electromagnet; 18-a magnetic sheet; 19-temperature detector; 20-an electric heating device; 21-wax-collecting block; 22-connecting block; 23-a wax guide tube; 24-a compression bar; 25-wax collection port; 26-a wax cavity; 27-an air inlet pipe; 28-wax inlet pipe; 29-doctor blade rest area; 30-a rotating electrical machine; 31-a gear; 32-a rack; 33-screw motor; 34-diamond shaped support.
Detailed Description
Example 1
A3D print head cleaning system as shown in figures 1-5 is installed in a 3D printer, the 3D printer comprises a printing platform 1, an x-axis component 2 for realizing the back and forth movement of the printing platform 1, a printing spray head 3 and a z-axis component 4 for realizing the up and down movement of the printing spray head 3, the cleaning assembly comprises a cleaning assembly for cleaning the spray head and a collecting assembly for collecting waste wax, the cleaning assembly is slidably connected to the x-axis component 2, and the collecting assembly is installed on the z-axis component 4. After the cleaning assembly cleans the spray head, the positions of the collecting assembly and the cleaning assembly are adjusted through the x-axis assembly 2 and the z-axis assembly 4, and the collecting assembly automatically collects the waste wax in the cleaning assembly. The whole cleaning process is controlled by the control system, manual operation is not needed, and the cleaning efficiency is high.
Clean subassembly includes waste material pond 5, doctor-bar 6 and support frame 7, and doctor-bar 6 is fixed in waste material pond 5, and support frame 7 is equipped with pivot 8, and waste material pond 5 revolutes 8 rotations of pivot, and support frame 7 is equipped with backup pad 9, and backup pad 9 offsets with waste material pond 5's bottom, makes waste material pond 5 keep the horizontality, and waste material pond 5's front end is equipped with discharge gate 10. The support frame 7 moves back and forth on the x-axis component 2 to drive the waste material pool 5 and the scraping blade 6 to move, when the scraping blade 6 moves, wax at the nozzle dot matrix 12 at the bottom of the spray head body 11 is scraped, and the scraped wax is dropped into the waste material pool 5. When the wax in the waste material pool 5 needs to be poured, a downward force is applied to the discharge port 10, the waste material pool 5 rotates downwards around the rotating shaft 8, and the wax flows out of the discharge port 10. After the wax is completely flowed, the discharging hole 10 is stopped to apply downward force, the waste material pool 5 rotates upwards under the action of gravity and is abutted against the supporting plate 9, and the waste material pool 5 keeps horizontal position.
Doctor-bar 6 includes circular arc portion 61 and vertical portion 62, and waste material pond 5 is equipped with doctor-bar fixed knot and constructs, and doctor-bar fixed knot constructs including doctor-bar fixing base 13 and preforming 14, and doctor-bar fixing base 13 is equipped with inclined plane 15, and vertical portion 62 is installed between inclined plane 15 and preforming 14, and preforming 14 and vertical portion 62 pass through the bolt fastening in inclined plane 15. The scraping blade 6 is fixed in the waste material pool 5 through the scraping blade fixing seat 13 and the pressing sheet 14, and the scraping blade 6 can be detached and replaced through the detaching bolt. The arc part 61 is in direct contact with the nozzle dot matrix 12, the arc shape can better fit the nozzle dot matrix 12 when the scraping blade 6 moves, and the wax stained with the nozzle dot matrix 12 is fully cleaned.
As shown in fig. 6 and 7, when the wiper 6 is made of flexible rubber, preferably fluorosilicone rubber, and the arc portion 61 scratches the bottom surface of the print head 3, the deformed arc portion 61 is perpendicular to the bottom surface of the print head 3. The fluorosilicone rubber does not react with the wax and is soft in texture without damaging the nozzle array 12. The arc part 61 deforms after contacting the nozzle dot matrix 12 when moving, and the deformed arc part 61 is perpendicular to the bottom surface of the printing nozzle 3, so that the cleaning effect is good.
x axle subassembly 2 includes x axle slide rail 15, and print platform 1 removes along x axle slide rail 15, and the both sides of support frame 7 are equipped with gleitbretter 16, and gleitbretter 16 is installed in x axle slide rail 15 department, and support frame 7 is equipped with electro-magnet 17, and print platform 1 is equipped with magnetic sheet 18, electro-magnet 17 and magnetic sheet 18 phase-match. When the electromagnet 17 is powered on and then attracts the magnetic sheet 18, the printing platform 1 can drive the whole cleaning assembly to slide along the x-axis slide rail 15, and the position of the cleaning assembly can be accurately controlled through the position of the printing platform 1.
The front end of the waste material pool 5 is provided with a temperature detector 19, and the tail end of the waste material pool 5 is provided with an electric heating device 20. The sump 5 is maintained at a temperature range to maintain the wax in a semi-fluid state, so that a temperature detector 19 is required to monitor the temperature of the sump 5. If the temperature is too high, the wax can evaporate, the gaseous wax is filled in the 3D printer, and the wax can be attached to each part of the 3D printer after cooling, so that the wax is difficult to clean. If the temperature is too low, the wax is solid, and the wax in the waste material pool 5 cannot be poured out and needs to be manually cleaned. Both of which increase the difficulty of cleaning.
The collection assembly comprises a wax collection block 21, a connecting block 22, a wax guide pipe 23 and a waste wax collection box (not shown in the figure), the wax collection block 21 is provided with a pressing rod 24 and a wax collection port 25, the wax collection port 25 is matched with the discharge port 10, the pressing rod 24 is positioned above the wax collection port 25, the connecting block 22 is connected with the wax collection block 21 and the wax guide pipe 23, the wax guide pipe 23 is connected with the waste wax collection box, and the wax collection block 21, the connecting block 22, the wax guide pipe 23 and the waste wax collection box are all provided with an electric heating assembly (not shown in the figure). When the wax is poured to waste material pond 5, aim at album wax mouth 25 with discharge gate 10, collect the subassembly and move down along z axle subassembly 4, depression bar 24 extrusion material mouth 10, waste material pond 5 lives discharge gate 10, and waste material pond 5 rotates downwards, and the wax in the waste material pond 5 flows out from discharge gate 10, flows through in proper order behind collection wax piece 21, connecting block 22 and the wax pipe 23 and flows into the waste wax collecting box, has realized the full-automatic of waste wax collection. The wax collecting block 21, the connecting block 22, the wax guide pipe 23 and the waste wax collecting box are heated by the electric heating assembly, so that wax flowing through is kept in a semi-solidified state.
As shown in fig. 3, 8 and 9, the printing nozzle 3 includes at least one nozzle body 11, each doctor blade 6 corresponds to one nozzle body 11, a wax cavity 26 is provided in the nozzle body 11, an air inlet pipe 27 and a wax inlet pipe 28 are provided at the top of the nozzle body 11, a nozzle lattice 12 is provided at the bottom of the nozzle body 11, doctor blade parking areas 29 are provided at the front and rear of the nozzle lattice 12, and the air inlet pipe 27, the wax inlet pipe 28, the wax cavity 26 and the nozzle lattice 12 are communicated with each other. Before the cleaning component scrapes the nozzle dot matrix 12, air is introduced into the nozzle body 11 through the air inlet pipe 27, so that the wax remaining in the wax cavity 26 is extruded out of the nozzle body 11 through air pressure, and the extruded wax flows into the waste material pool 5. The new wax that the shower nozzle body 11 flows into in the wax box through entering wax pipe 28 again is that new wax gets into in the wax chamber 26, and the new wax printing is sprayed to waste pool 5 to nozzle dot matrix 12. The wiper 6 rests on the wiper rest area 29, preventing the wiper 6 from blocking the nozzle dot matrix 12 when the nozzle dot matrix 12 is ejected.
The cleaning method using the 3D printer nozzle cleaning system comprises the following steps:
(1) stopping ink supply and printing, heating by an electric heating device 20 on the waste material tank 5, and monitoring the temperature of the waste material tank 5 by a temperature detector 19 in real time to keep the waste material tank 5 at a constant temperature;
(2) the electromagnet 17 is electrified, the printing platform 1 moves to the front of the cleaning component along the x-axis slide rail 15, so that the electromagnet 17 attracts the magnetic sheet 18, the printing platform 1 drives the cleaning component to move to the lower part of the printing spray head 3, and the printing spray head 3 moves downwards, so that the arc part 61 of the scraping blade 6 is abutted against the scraping blade stopping area 29 at the bottom of the spray head body 11;
(3) introducing air into the air inlet pipe 27 to apply positive pressure, extruding the waste wax in the wax cavity 26 by the air, and spraying the waste wax into the waste material pool 5 through the nozzle dot matrix 12;
(4) repeating the step (3) until no residual waste wax exists in the wax cavity 26;
(5) after the spraying is finished, the printing platform 1 drives the cleaning assembly to move, the scraping blade 6 scrapes the nozzle dot matrix 12, residual wax at the nozzle dot matrix 12 is scraped away, and the residual wax flows into the waste material pool 5;
(6) the cleaning assembly moves to the position below the printing spray head 3, new wax in a wax box of the 3D printer is extruded into a wax inlet pipe 28, the new wax is filled into a wax cavity 26 and is printed and sprayed through a nozzle dot matrix 12, and the new wax is sprayed into the waste material pool 5;
(7) the wax collecting block 21, the connecting block 22, the wax guide pipe 23 and the waste wax collecting box are provided with electric heating components for heating, so that the whole collecting component keeps constant temperature;
(8) the printing platform 1 drives the cleaning assembly to move to the side of the collecting assembly, the x-axis assembly 2 and the z-axis assembly 4 are adjusted to enable the discharge port 10 of the waste material pool 5 to be aligned to the wax collecting port 25 of the wax collecting block 21, the z-axis assembly 4 moves downwards to enable the pressure rod 24 to press the discharge port 10, the waste material pool 5 rotates downwards, wax in the waste material pool 5 flows out of the discharge port 10, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block 21, the connecting block 22 and the wax guide pipe 23;
(9) after the wax in the waste pool 5 is poured, the z-axis assembly 4 moves upwards, the waste pool 5 rotates upwards under the action of gravity, and the bottom of the waste pool 5 abuts against the supporting plate 9, so that the waste pool 5 is kept in a horizontal state;
(10) printing platform 1 drives clean subassembly and removes to the one end of x axle subassembly 2, and electro-magnet 17 stops the circular telegram, and the heating rod stops the heating, accomplishes the cleanness of printing shower nozzle 3.
Example 2
A3D print head cleaning system based on embodiment 1, difference lies in that the cleaning assembly structure is different. As shown in fig. 10, the cleaning assembly further includes an autonomous moving mechanism, the autonomous moving mechanism includes a rotating motor 30 mounted on the supporting frame 7 and a rack 32 mounted on the X-axis assembly 2, a gear 31 is disposed at the bottom of the rotating motor 30, and the rotating motor 30 drives the gear 31 to rotate on the rack 32, so as to drive the cleaning assembly to reciprocate on the X-axis assembly 2. The top of the supporting frame 7 is fixed with a lifting motion assembly for realizing the lifting of the waste material pool 5, the lifting motion assembly is of a jack structure, two opposite ends of the diamond-shaped support 34 are arranged on the screw motor 33, and when the screw motor 33 works, the two opposite ends of the diamond-shaped support 34 move inwards or outwards, so that the height of the waste material pool 5 is controlled.
The cleaning method using the 3D printer nozzle cleaning system comprises the following steps:
(1) stopping ink supply and printing, and moving the printing platform 1 to one end of the x-axis assembly 2;
(2) the cleaning assembly is positioned at the other end of the x-axis assembly 2, an electric heating device 20 on the waste material pool 5 is used for heating, and a temperature detector 19 is used for monitoring the temperature of the waste material pool 5 in real time so as to keep the waste material pool 5 at a constant temperature;
(3) under the drive of the autonomous motion mechanism, the cleaning component moves to the lower part of the printing spray head 3, and the waste material pool 5 moves upwards under the action of the lifting motion component, so that the arc part 61 of the scraping blade 6 is abutted against the scraping blade stopping area 29 at the bottom of the spray head body 11;
(4) introducing air into the air inlet pipe 27 to apply positive pressure, extruding the waste wax in the wax cavity 26 by the air, and spraying the waste wax into the waste material pool 5 through the nozzle dot matrix 12;
(5) repeating the step (4) until no residual waste wax exists in the wax cavity 26;
(6) after the spraying is finished, the cleaning assembly moves along the x-axis slide rail 15, the scraping blade 6 scrapes the nozzle dot matrix 12, residual wax at the nozzle dot matrix 12 is scraped away, and the residual wax flows into the waste material pool 5;
(7) the cleaning assembly moves to the position below the printing spray head 3, new wax in a wax box of the 3D printer is extruded into a wax inlet pipe 28, the new wax is filled into a wax cavity 26 and is printed and sprayed through a nozzle dot matrix 12, and the new wax is sprayed into the waste material pool 5;
(8) the wax collecting block 21, the connecting block 22, the wax guide pipe 23 and the waste wax collecting box are provided with electric heating components for heating, so that the whole collecting component keeps constant temperature;
(9) the automatic movement mechanism drives the cleaning assembly to move to the side of the collecting assembly, after the automatic movement mechanism and the lifting movement assembly are adjusted, the discharge hole 10 of the waste material pool 5 is aligned to the wax collecting opening 25 of the wax collecting block 21, the waste material pool 5 moves upwards, the discharge hole 10 is pressed by the pressing rod 24, the waste material pool 5 rotates downwards, wax in the waste material pool 5 flows out of the discharge hole 10, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block 21, the connecting block 22 and the wax guide pipe 23;
(10) after the wax in the waste pool 5 is poured, the waste pool 5 moves downwards, the waste pool 5 rotates upwards under the action of gravity, and the bottom of the waste pool 5 abuts against the supporting plate 9, so that the waste pool 5 is kept in a horizontal state;
(11) the cleaning assembly moves to the original position, the heating rod stops heating, the cleaning of the printing nozzle 3 is completed, and the printing platform 1 moves to the position below the printing nozzle 3.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (16)
1. The utility model provides a clean system of 3D print head, installs on the 3D printer, the 3D printer includes print platform, realizes the x axle subassembly of print platform back-and-forth movement, print the shower nozzle and realize print the z axle subassembly that the shower nozzle reciprocated, its characterized in that: including the clean subassembly that is used for clean shower nozzle, clean subassembly is including being used for carrying out the doctor-bar of clearing up and being used for connecing the waste material pond of the waste material that clears up from the shower nozzle greatly to the shower nozzle, the doctor-bar is installed in the waste material pond, the waste material pond is equipped with the discharge gate.
2. The 3D printer nozzle cleaning system according to claim 1, wherein: the cleaning assembly comprises a first state of stopping and a second state of cleaning the spray head, the x-axis assembly comprises an x-axis slide rail, and the cleaning assembly and the printing platform can move back and forth on the x-axis slide rail.
3. The 3D printer nozzle cleaning system according to claim 2, wherein: the cleaning assembly in the first state is located at one end of the x-axis sliding rail, and the cleaning assembly moves from the first state position to the second state position on the x axis through the printing platform or an autonomous moving mechanism arranged on the cleaning assembly.
4. The 3D printer nozzle cleaning system according to claim 3, wherein: the two sides of the cleaning assembly are provided with sliding pieces, the sliding pieces are installed at the x-axis sliding rails, the cleaning assembly is provided with an electromagnet, the printing platform is provided with a magnetic sheet, and the electromagnet is matched with the magnetic sheet.
5. The 3D printer nozzle cleaning system according to claim 3, wherein: the autonomous movement mechanism further comprises a lifting movement assembly for realizing the lifting of the waste material pool.
6. The 3D printer nozzle cleaning system according to claim 1, wherein: the cleaning assembly further comprises a support frame, the waste material pool is rotatably connected with the support frame through a rotating structure, the support frame is provided with a support plate, the support plate is abutted to the bottom of the waste material pool, the waste material pool is kept in a horizontal state, and the waste material pool is provided with a temperature detector and an electric heating device.
7. The 3D printer nozzle cleaning system according to claim 1, wherein: the scraper comprises an arc part and a vertical part, the waste tank is provided with a scraper fixing structure, the scraper fixing structure comprises a scraper fixing seat and a pressing sheet, the scraper fixing seat is provided with an inclined plane, the vertical part is installed between the inclined plane and the pressing sheet, and the pressing sheet and the vertical part are fixed on the inclined plane through bolts.
8. The 3D printer head cleaning system according to claim 7, wherein: the doctor-bar is made by flexible material, the arc portion is scraped when printing the bottom surface of shower nozzle, after the deformation the arc portion with the bottom surface mutually perpendicular who prints the shower nozzle.
9. The 3D printer nozzle cleaning system according to claim 1, wherein: still including the collection subassembly that is used for collecting the waste wax, the collection subassembly is including album wax stone, connecting block, wax guide pipe and waste wax collecting box, album wax stone is equipped with depression bar and collection wax mouth, collection wax mouth in go out the wax mouth phase-match, the depression bar is located the top of collection wax mouth, the connecting block is connected collection wax stone with wax guide pipe, wax guide pipe connects the waste wax collecting box, collection wax stone the connecting block wax guide pipe with the waste wax collecting box all is equipped with electric heater unit.
10. The 3D printer nozzle cleaning system according to claim 1, wherein: the printing sprayer comprises at least one sprayer body, each scraper corresponds to one sprayer body, a wax cavity is arranged in each sprayer body, an air inlet pipe and a wax inlet pipe are arranged at the top of each sprayer body, a nozzle dot matrix is arranged at the bottom of each sprayer body, and the air inlet pipe is communicated with the wax inlet pipe and the wax cavity and the nozzle dot matrix.
11. A cleaning method using the 3D printer head cleaning system according to any one of claims 1 to 10, comprising the steps of:
(1) the printing nozzle stops supplying ink for printing;
(2) the cleaning component moves to the position below the printing spray head along the x-axis slide rail, so that the scraping blade is abutted against a scraping blade stopping area at the bottom of the spray head body;
(3) introducing air into the air inlet pipe to apply positive pressure, extruding the waste wax in the wax cavity by the air, and spraying the waste wax into a waste material pool through a nozzle lattice;
(4) the cleaning component moves, the scraping blade scrapes the nozzle dot matrix, residual wax at the nozzle dot matrix is scraped away, and the residual wax flows into the waste material pool;
(5) the cleaning assembly moves to the position below the printing spray head, new wax in a wax box of the 3D printer is extruded into a wax pipe, the new wax is filled into a wax cavity and is printed and sprayed through a nozzle dot matrix, and the new wax is sprayed into a waste material pool;
(6) the cleaning assembly moves to one end of the x-ray assembly.
12. The method for cleaning the nozzle of the 3D printer according to claim 11, wherein: in the step (2), the cleaning assembly is driven to the position below the printing nozzle through the printing platform, and the method comprises the following specific steps: print platform removes the place ahead of cleaning assembly along x axle slide rail, and print platform passes through electro-magnet or gets in touch the structure and drives cleaning assembly and remove the below of printing the shower nozzle along x axle slide rail removal, prints the shower nozzle and moves down, makes the doctor-bar stop the district with the doctor-bar of shower nozzle body bottom and offsets.
13. The method for cleaning the nozzle of the 3D printer according to claim 11, wherein: in the step (2), the cleaning assembly moves to the position below the printing nozzle through the autonomous motion mechanism, and the method specifically comprises the following steps: the printing platform moves to the other end of the x-axis slide rail, the cleaning assembly moves to the lower part of the printing nozzle on the x-axis slide rail through the autonomous movement mechanism, and the cleaning assembly moves upwards through the lifting movement assembly, so that the arc part of the scraping blade is abutted to the scraping blade stopping area at the bottom of the nozzle body.
14. The method for cleaning the nozzle of the 3D printer according to claim 11, wherein: between the step (5) and the step (6), the method further comprises the following steps:
(a) the electric heating devices arranged on the wax collecting block, the connecting block, the wax guide pipe and the waste wax collecting box heat the wax collecting block, the connecting block, the wax guide pipe and the waste wax collecting box, so that the whole collecting assembly keeps constant temperature;
(b) the cleaning assembly moves to the side of the collecting assembly, so that a wax outlet of the waste pool is aligned to a wax collecting opening of the wax collecting block, the wax outlet is pressed by the pressing rod, the waste pool rotates downwards, and wax in the waste pool flows out of the wax outlet, flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe;
(c) after wax in the waste material pond emptys and finishes, the depression bar is kept away from to the wax outlet, and the waste material pond upwards rotates under the action of gravity, and the bottom and the backup pad in waste material pond offset, make the waste material pond keep the horizontality.
15. The method for cleaning the nozzle of the 3D printer according to claim 12, wherein: in the step (b), the printing platform drives the cleaning assembly to move to the side of the collecting assembly, so that the wax outlet of the waste pool is aligned with the wax collecting opening of the wax collecting block, the z-axis assembly moves downwards, the pressing rod presses the wax outlet, the waste pool rotates downwards, wax in the waste pool flows out of the wax outlet, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe; in the step (c), after the wax in the waste material pool is poured, the z-axis assembly moves upwards, the wax outlet is far away from the pressing rod, the waste material pool rotates upwards under the action of gravity, and the bottom of the waste material pool is abutted to the supporting plate, so that the waste material pool is kept in a horizontal state.
16. The method for cleaning the nozzle of the 3D printer according to claim 12, wherein: in the step (b), the cleaning assembly moves to the side of the collecting assembly through the autonomous motion mechanism, so that the wax outlet of the waste material pool is aligned with the wax collecting opening of the wax collecting block, the cleaning assembly moves upwards through the lifting motion assembly, so that the pressing rod presses the wax outlet, the waste material pool rotates downwards, wax in the waste material pool flows out of the wax outlet, and flows into the waste wax collecting box after sequentially flowing through the wax collecting block, the connecting block and the wax guide pipe; in the step (c), after the wax in the waste material pool is poured, the cleaning assembly moves downwards through the lifting motion assembly, the wax outlet is far away from the pressing rod, the waste material pool rotates upwards under the action of gravity, and the bottom of the waste material pool is abutted to the supporting plate, so that the waste material pool is kept in a horizontal state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911240148.1A CN111113898A (en) | 2019-12-06 | 2019-12-06 | 3D printer nozzle cleaning system and cleaning method thereof |
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| CN201911240148.1A CN111113898A (en) | 2019-12-06 | 2019-12-06 | 3D printer nozzle cleaning system and cleaning method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112008979A (en) * | 2020-09-01 | 2020-12-01 | 淄博俊康文具有限公司 | Model dismounting device of SLA3D printer |
| CN112123763A (en) * | 2020-09-30 | 2020-12-25 | 共享智能铸造产业创新中心有限公司 | Printing head protection device, printing head cleaning method and 3D printer |
| CN112549550A (en) * | 2020-11-16 | 2021-03-26 | 中国计量大学 | Cleaning method for printing platform of 3D printer |
| CN114347480A (en) * | 2022-03-18 | 2022-04-15 | 杭州爱新凯科技有限公司 | Erode and wipe away integral type 3D printing apparatus printing shower nozzle wiper mechanism |
| CN115534309A (en) * | 2022-12-01 | 2022-12-30 | 西安博恩生物科技有限公司 | 3D printing equipment for high polymer material skeleton |
| CN116079009A (en) * | 2023-02-03 | 2023-05-09 | 重庆金石智诚科技有限公司 | Clean subassembly and sand mould 3D printer |
| CN117002007A (en) * | 2023-08-11 | 2023-11-07 | 深圳市鹏扬三维科技有限公司 | Wax spraying 3D printing equipment and 3D printing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112008979A (en) * | 2020-09-01 | 2020-12-01 | 淄博俊康文具有限公司 | Model dismounting device of SLA3D printer |
| CN112008979B (en) * | 2020-09-01 | 2021-04-30 | 武汉山尚一品艺术创意有限公司 | Model dismounting device of SLA3D printer |
| CN112123763A (en) * | 2020-09-30 | 2020-12-25 | 共享智能铸造产业创新中心有限公司 | Printing head protection device, printing head cleaning method and 3D printer |
| CN112549550A (en) * | 2020-11-16 | 2021-03-26 | 中国计量大学 | Cleaning method for printing platform of 3D printer |
| CN112549550B (en) * | 2020-11-16 | 2022-06-28 | 台州新森增材制造有限公司 | Cleaning method for printing platform of 3D printer |
| CN114347480A (en) * | 2022-03-18 | 2022-04-15 | 杭州爱新凯科技有限公司 | Erode and wipe away integral type 3D printing apparatus printing shower nozzle wiper mechanism |
| CN115534309A (en) * | 2022-12-01 | 2022-12-30 | 西安博恩生物科技有限公司 | 3D printing equipment for high polymer material skeleton |
| CN116079009A (en) * | 2023-02-03 | 2023-05-09 | 重庆金石智诚科技有限公司 | Clean subassembly and sand mould 3D printer |
| CN116079009B (en) * | 2023-02-03 | 2023-12-01 | 重庆金石智诚科技有限公司 | Clean subassembly and sand mould 3D printer |
| CN117002007A (en) * | 2023-08-11 | 2023-11-07 | 深圳市鹏扬三维科技有限公司 | Wax spraying 3D printing equipment and 3D printing method |
| CN117002007B (en) * | 2023-08-11 | 2024-04-05 | 深圳市鹏扬三维科技有限公司 | Wax spraying 3D printing equipment and 3D printing method |
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