WO2022021603A1 - 一种3d打印头及3d打印机 - Google Patents

一种3d打印头及3d打印机 Download PDF

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Publication number
WO2022021603A1
WO2022021603A1 PCT/CN2020/119317 CN2020119317W WO2022021603A1 WO 2022021603 A1 WO2022021603 A1 WO 2022021603A1 CN 2020119317 W CN2020119317 W CN 2020119317W WO 2022021603 A1 WO2022021603 A1 WO 2022021603A1
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WO
WIPO (PCT)
Prior art keywords
ink
negative pressure
printing head
air
ink cartridge
Prior art date
Application number
PCT/CN2020/119317
Other languages
English (en)
French (fr)
Inventor
王军伟
闫涛
白雪
彭凡
刘轶
马玺
马睿
杜银学
杨小平
Original Assignee
共享智能装备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010727092.9A external-priority patent/CN111716907B/zh
Priority claimed from CN202021489083.2U external-priority patent/CN212555514U/zh
Application filed by 共享智能装备有限公司 filed Critical 共享智能装备有限公司
Priority to JP2021529358A priority Critical patent/JP7322146B2/ja
Priority to EP20886185.6A priority patent/EP3974186A4/en
Publication of WO2022021603A1 publication Critical patent/WO2022021603A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/17Ink jet characterised by ink handling
    • B41J2/175Ink supply systems ; Circuit parts therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive 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
    • B29C64/20Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205Means for applying layers
    • B29C64/209Heads; Nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor

Definitions

  • the invention relates to the technical field of 3D printing, in particular to a 3D printing head and a 3D printer.
  • 3D printing technology is similar to traditional inkjet printing technology, in which the print head is one of the most critical components of the printer, and the print head directly affects the printing efficiency and printing quality of the product.
  • the nozzle of the 3D printing head communicates with the ink cartridge for ink jetting.
  • the liquid material provided by the print head is called ink.
  • the pipelines connecting each nozzle and the ink cartridge are complicated and numerous, which is not conducive to layout and is easily damaged.
  • the connection between the drive board that drives the printhead to move and the printhead is easy to loosen during use, thereby affecting the inkjet effect of the printhead.
  • the first object of the present invention is to provide a 3D printing head, the structural design of the 3D printing head can effectively solve the problem that the independent pipeline connecting the nozzle and the ink tank is complicated and unfavorable for layout.
  • the second object is to provide a 3D printer including the above-mentioned 3D print head.
  • the present invention provides the following technical solutions:
  • a 3D printing head including an ink supply assembly and an inkjet assembly
  • the ink supply assembly includes an ink cartridge and a shunt pipe that are communicated with each other;
  • the ink jet assembly includes a jet head and a driving board, the jet head communicates with the branch pipe, and the driving board is inserted into the jet head for controlling the jetting of the jet head.
  • the shunt pipe includes several branch pipes, and the branch pipes communicate with each other.
  • each of the nozzles is arranged on the printing base plate in an array, and each row of the nozzles is arranged corresponding to one of the branch pipes.
  • a positioning seat corresponding to the three-point position of the three-point adjustment plate is provided on the cover plate, and a differential head is installed on the positioning seat for adjusting the position of the three-point adjustment plate. Horizontal straightness.
  • one end of the differential head is provided with a knob, and the other end is a push rod, and the push rod abuts against the three-point adjustment plate in a horizontal direction.
  • the cover plate is provided with a power plug and an optical fiber protection box.
  • the ink cartridge is a box body made of a non-metallic material.
  • a mounting frame is further included, the mounting frame includes side plates arranged opposite to each other and a plurality of transverse ribs connecting the two side plates, and the spray head is arranged on the transverse ribs located at the bottom.
  • the driving board is fixedly connected to the transverse rib located in the middle.
  • each of the opposite side plates is provided with a guide rail groove, and a partition plate is slidably installed in the guide rail groove, and the partition plate is used to support the ink cartridge and cooperate with the partition plate
  • a fixing member for locking or unlocking the partition plate and the side plate is provided.
  • the transverse rib located in the middle position is provided with a plurality of through holes, and the through holes are used for connecting compressed air to cool the driving board.
  • a defoamer is installed at the ink inlet of the ink cartridge.
  • the outer edge of the ink cartridge is provided with a degassing cavity.
  • the ink supply assembly further includes a liquid supply tank, a liquid supply pump and a liquid supply filter, the liquid supply pump and the liquid supply filter are arranged in communication between the liquid supply tank and the liquid supply filter. between the ink supply chambers.
  • the feed filter includes a primary filter connected to the outlet of the feed pump and a secondary filter connected to the outlet of the primary filter.
  • the ink supply assembly further includes a degassing membrane disposed at the outlet of the primary filter, and the degassing membrane is used for degassing the gas in the ink.
  • the ink supply assembly further includes a negative pressure box, the ink cartridge has an ink supply chamber and an ink return chamber, the negative pressure box has an ink supply negative pressure chamber and an ink return negative pressure chamber, the The ink supply chamber is communicated with the ink supply negative pressure chamber, and the ink return chamber is communicated with the ink return negative pressure chamber;
  • the nozzle is in communication with the ink supply chamber and the ink return chamber of the ink cartridge.
  • a plurality of dividing plates are arranged in the ink supply chamber to form a plurality of sub ink supply chambers.
  • the ink supply assembly further includes a liquid return pump, a liquid material recovery bucket and a liquid return filter connected in sequence, the liquid return pump communicates with the ink return chamber, and the liquid return filter communicate with the liquid tank.
  • a cleaning assembly is further included, the cleaning assembly includes a cleaning pool and a scrubbing member, the cleaning pool is used for placing cleaning fluid, and the scrubbing member is movably installed on the cleaning pool for scrubbing the sprinkler.
  • the scrubbing member includes a roller and a roller driving member, the roller is rotatably installed in the cleaning pool, and the outer edge of the roller is provided with a sponge layer, and the roller drives A piece is drivingly connected to the roller.
  • the scrubbing member further comprises a lifting member and a bracket, the lifting member is arranged at the bottom of the cleaning pool, and the bracket is fixedly connected to the output end of the lifting member, The roller is rotatably connected to the bracket.
  • a cleaning brush for cleaning the sponge layer is installed on the inner wall of the cleaning pool.
  • the inner wall of the cleaning tank is further provided with a scraper for pressing the sponge layer.
  • the ink cartridge has at least two air inlets;
  • the air source device includes a first negative pressure generator and a second negative pressure generator, the first negative pressure generator
  • the air outlet of the generator and the air outlet of the second negative pressure generator are respectively connected with at least two of the air inlets of the ink cartridge, so as to introduce negative pressures of different pressures into the ink cartridge.
  • the air source device further includes an air source filter assembly, the air source filter assembly is connected to an external air source, and the air outlets of the air source filter assembly are respectively connected to the first negative pressure generator is connected to the air inlet of the second negative pressure generator.
  • the air source filter assembly includes an air source processor and a precision filter, an air inlet of the air source processor is connected to an external air source, and an air inlet of the precision filter is connected to the air source.
  • the air outlet of the air source processor is connected, and the air outlet of the precision filter is respectively connected to the air inlet of the first negative pressure generator and the air inlet of the second negative pressure generator.
  • the air source device further includes a first pressure reducing valve and a second pressure reducing valve, and the air outlet of the precision filter is respectively connected to the inlet of the first pressure reducing valve and the second pressure reducing valve.
  • the inlet of the pressure reducing valve, the outlet of the first pressure reducing valve is connected to the air inlet of the first negative pressure generator, and the outlet of the second pressure reducing valve is connected to the air intake of the second negative pressure generator mouth.
  • the air source device further includes a first negative pressure accumulator and a second negative pressure accumulator, and an air inlet of the first negative pressure accumulator is connected to an air inlet of the first negative pressure generator.
  • Air outlet, the air inlet of the second negative pressure accumulator is connected to the air outlet of the second negative pressure generator, the air outlet of the first negative pressure accumulator and the outlet of the second negative pressure accumulator are connected.
  • the air ports are respectively connected with different air inlets of the ink cartridges.
  • the air source device further includes a third pressure reducing valve and a positive pressure accumulator, the inlet of the third pressure reducing valve is connected to the air outlet of the precision filter, and the third pressure reducing valve is connected to the air outlet of the precision filter.
  • the outlet of the pressure valve is connected to the air inlet of the positive pressure accumulator, and the air outlet of the positive pressure accumulator is connected to the air inlet of the ink cartridge.
  • the air source device further includes a first two-position three-way valve, a second two-position three-way valve and a three-way joint, and the air outlet of the positive pressure accumulator is connected to the first two-position three-way valve.
  • the first air inlet of the three-way valve is connected, and the air outlet of the second negative pressure accumulator is connected to the second air inlet of the first two-position three-way valve.
  • the air outlet is connected with the first interface of the three-way joint
  • the second interface of the three-way joint is connected with the first air inlet of the second two-position three-way valve
  • the third interface of the three-way joint is connected is connected with the first air inlet of the ink cartridge
  • the air outlet of the first negative pressure reservoir is connected with the second air inlet of the second two-position three-way valve
  • the second two-position three-way valve The air outlet is connected with the second air inlet of the ink cartridge.
  • the ink cartridge of the ink supply assembly is communicated with the nozzle of the inkjet assembly through the shunt pipe, and the nozzle is under the control of the driving board to eject ink. Since the ink cartridge is communicated with the nozzles through the shunt pipe, the shunt pipe can realize the shunting of the ink cartridge to the multiple nozzles when there are multiple nozzles, so there is no need to set up multiple independent pipelines, which simplifies the structure and facilitates the overall layout.
  • the ink cartridge and the multiple nozzles are connected through the shunt pipe, and the inside of the shunt pipe is connected, which is not easy to be blocked, improves the stability of the operation of the nozzles, and the flow rate of each nozzle is more uniform.
  • the nozzle and the drive board are connected by plugging, which can reduce the line connection, thereby reducing the occurrence of failure points, saving installation space and convenient maintenance.
  • the present invention provides a 3D printing head and a 3D printer with good inkjet effect, easy adjustment of height and straightness, and low installation and maintenance cost.
  • the 3D printing head includes: an installation frame, An ink supply assembly and an inkjet assembly;
  • the installation frame includes a connecting plate, a three-point adjustment plate and a cover plate, the connecting plate is used to connect a drive module and drive the 3D printing head to move, and the three-point adjustment plate is provided with
  • the cover plate is movably installed on the three-point adjustment plate;
  • the ink supply assembly includes an ink cartridge and a shunt pipe that communicate with each other, the ink cartridge is installed on the three-point adjustment plate, and the The shunt pipe is arranged on the cover plate;
  • the inkjet assembly includes a printing bottom plate, a nozzle and a driving board, the printing bottom plate is connected with the cover plate, the nozzle is installed on the printing bottom plate, and is connected with the printing bottom plate.
  • the shunt pipes are communicate
  • the ink cartridge is externally placed on the three-point adjustment plate, which effectively avoids the heating of the ink cartridge due to the heating of the driver board, thereby changing the ink temperature, which in turn causes the change of ink viscosity and causes the inkjet quality to decline.
  • the natural wind can simply and effectively cool the ink cartridge; and the three-point adjustment plate is movably installed on the cover plate, which is conducive to the smooth and efficient adjustment of height and straightness; Instead of several liquid inlet pipes connected between the ink cartridge and the nozzle, the installation complexity is greatly simplified, and the installation and maintenance costs are reduced.
  • a 3D printing head includes a mounting frame, an ink supply assembly and an inkjet assembly;
  • the ink supply assembly includes an ink cartridge, and the ink cartridge is arranged on the mounting frame;
  • the ink jet assembly includes a spray head and a driving board arranged on the mounting frame, the spray head is communicated with the ink cartridge, and the driving board is inserted into the spray head for controlling the ink jet of the spray head.
  • the nozzle and the driver board are connected by plugging, which can reduce the line connection, thereby reducing the occurrence of failure points, saving installation space and convenient maintenance.
  • the present invention also provides a 3D printer, the 3D printer comprising any of the above 3D printing heads. Since the above-mentioned 3D printing head has the above-mentioned technical effect, the 3D printer with the 3D printing head should also have the corresponding technical effect.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a 3D printing head according to an embodiment
  • FIG. 2 is a schematic three-dimensional structure diagram of the 3D printing head shown in FIG. 1 from another perspective;
  • FIG. 3 is a schematic diagram of a partial structure of a 3D printing head according to an embodiment
  • FIG. 4 is a schematic three-dimensional structure diagram of a 3D printing head according to another embodiment
  • FIG. 5 is a schematic diagram of a partial three-dimensional structure of a 3D printing head according to another embodiment
  • FIG. 6 is a schematic structural diagram of a cleaning assembly
  • FIG. 7 is a schematic structural diagram of a gas source device
  • FIG. 8 is a schematic structural diagram of an ink supply assembly
  • Fig. 9 is a kind of installation structure schematic diagram of ink supply assembly and inkjet assembly.
  • Figure 10 is a schematic diagram of the ink cartridge
  • Figure 11 is a schematic sectional view of the ink cartridge
  • Figure 12 is a schematic diagram of a negative pressure box
  • Figure 13 is a schematic diagram of the liquid material circulation of the ink supply assembly.
  • Mounting frame 100 connecting plate 110, three-point adjustment plate 120, cover plate 130, positioning seat 131, differential head 132, power plug 140, optical fiber protection box 150, side plate 160; bottom rib 161, middle rib 162, top Ribs 163, partitions 164, guide rail grooves 165; parallelism adjustment block 172, perpendicularity adjustment block 173, micro-distance sensor 174, adjustment plate 175;
  • Ink supply assembly 200 ink cartridge 210, shunt pipe 220, sealing plug 230; ink supply chamber 211, ink return chamber 212, dividing plate 213, liquid supply joint 214; negative pressure box 240, ink supply negative pressure chamber 241, ink return Negative pressure chamber 242, ink supply pipe 243, ink return pipe 244, right-angle through-plate joint 245, right-angle pagoda joint 246, liquid return pump 251, liquid material recovery barrel 252, liquid return filter 253; liquid outlet joint 221;
  • Inkjet assembly 300 printing base plate 310, nozzle 320, driving board 330, fixing ribs 340;
  • Air source processor 511 precision filter 512, first pressure reducing valve 521, second pressure reducing valve 522, third pressure reducing valve 523, first negative pressure generator 531, second negative pressure generator 532, positive pressure reservoir 541, second negative pressure reservoir 542, first negative pressure reservoir 543, first 3/2-way valve 551, second 3/2-way valve 552;
  • Liquid tank 610 Liquid tank 610, liquid supply filter 620, primary filter 621, secondary filter 622, liquid supply pump 630, liquid material pipe 640, defoamer 650, negative pressure pipe 660, liquid level sensor 670, ink feed Port 611, exhaust 612.
  • the 3D printing head provided by the present invention includes an ink supply assembly and an ink jet assembly.
  • the ink supply assembly includes an ink cartridge and a shunt pipe that are communicated with each other.
  • the shunt tube communicates with the ink cartridge for inking.
  • the ink jet assembly includes a jet head and a driving board, the jet head is communicated with the shunt pipe, and the driving board is connected to the jet head and is used to control the jetting of the jet head.
  • the driving board is connected with the nozzle and is used to control the inkjet of the nozzle.
  • the driving board is inserted into the nozzle.
  • the plug-in method is adopted to facilitate the installation of the drive board and the nozzle, and the maintenance is convenient. Specifically, when the driver board is plugged into the nozzle and the signal connection is realized by plugging, the nozzle and the driver board do not need to be connected with separate lines, thus reducing the line connection, thereby reducing the occurrence of failure points and saving installation space.
  • the nozzle is communicated with the shunt pipe, that is, the ink cartridge is communicated with the nozzle through the shunt pipe.
  • the arrangement of the shunt pipe can realize the communication between the ink cartridge and multiple nozzles, and the nozzles are also connected due to the arrangement of the shunt pipe.
  • an installation frame can be provided, and the specific structure of the installation frame can be set as required, which is not specifically limited here, as long as the ink supply assembly and the inkjet assembly can be installed.
  • the ink cartridge can be installed inside the installation frame, or can be installed outside the installation frame.
  • the ink cartridge of the ink supply assembly is communicated with the nozzle of the inkjet assembly through the shunt pipe, and the nozzle is controlled by the driving board to ink jet. Since the ink cartridge is communicated with the nozzles through the shunt pipe, the shunt pipe can realize the shunting of the ink cartridge to the multiple nozzles when there are multiple nozzles, so there is no need to set up multiple independent pipelines, which simplifies the structure and facilitates the overall layout.
  • the ink cartridge and the multiple nozzles are connected through the shunt pipe, and the inside of the shunt pipe is connected, which is not easy to be blocked, improves the stability of the operation of the nozzles, and the flow rate of each nozzle is more uniform.
  • the driver board emits heat, the ink cartridge or ink tube is inside the printing mechanism, and the ink temperature is changed, and the highest temperature can reach 40 ° C, resulting in poor inkjet effect of the nozzle or even the printing is scrapped;
  • the installation and maintenance of the ink tube and ink cartridge are very inconvenient, causing Installation and maintenance costs are high; in addition, the current positioning of the printing mechanism adjusts the height and straightness of the printing mechanism, with many adjustment points and a large number of adjustment bolts, and the adjustment of the bolts is relatively rough and not refined enough. It is a lot of inconvenience and increases the difficulty of adjustment.
  • a 3D printing head includes: a mounting frame, an ink supply assembly and an inkjet assembly;
  • the mounting frame includes a connecting plate, a three-point adjustment plate and a cover plate, the connecting plate is used to connect the drive module and drive the 3D printing head to move, the three-point adjustment plate is arranged on the connecting plate, and the cover plate is movably installed on the three-point adjustment plate ;
  • the ink supply assembly includes an ink cartridge and a shunt pipe that communicate with each other, the ink cartridge is installed on the three-point adjustment plate, and the shunt pipe is arranged on the cover plate;
  • the ink jet assembly includes a printing bottom plate, a nozzle and a driving board, the printing bottom plate is connected with the cover plate, the nozzle is mounted on the printing bottom plate and communicated with the shunt pipe, the driving board is inserted on the nozzle, used for Controlling the jetting of the jets.
  • the installation positions of the ink supply includes a connecting plate, a three-point adjustment
  • the ink cartridge of the printing mechanism is externally placed on the three-point adjustment plate, which effectively avoids the heating of the ink cartridge due to the heating of the driving board, thereby changing the ink temperature, and then causing the ink viscosity change and causing the inkjet quality to decline.
  • the setting makes it possible to rely on natural wind to cool the ink cartridge simply and effectively during the printing process; and the three-point adjustment plate is movably installed on the cover plate, which is conducive to the smooth and efficient adjustment of the height and straightness of the printing mechanism; further, By arranging a shunt pipe on the cover plate, several liquid inlet pipes connected between the ink cartridge and the nozzle are effectively replaced, which greatly simplifies the installation complexity of the printing mechanism and is beneficial to reduce installation and maintenance costs.
  • the 3D printing head will be described below with reference to specific embodiments to further understand the inventive concept of the 3D printing head.
  • the 3D printing head includes: an installation frame 100 , an ink supply assembly 200 and an inkjet assembly 300 ; wherein the ink supply assembly 200 and the inkjet assembly 300 are both disposed on the installation frame 100 Above, the ink supply assembly 200 provides printing liquid material to the inkjet assembly 300, and the inkjet assembly 300 ejects ink to the printing surface to realize printing.
  • the mounting frame 100 includes a connecting plate 110 , a three-point adjusting plate 120 and a cover plate 130 .
  • the connecting plate 110 is used to connect the drive module and drive the 3D printing head to move.
  • the three-point adjusting plate 120 Disposed on the connecting plate 110 , the cover plate 130 is movably mounted on the three-point adjusting plate 120 .
  • the connecting plate 110 is integrally connected with the three-point adjusting plate 120 .
  • the connecting plate 110 and the three-point adjusting plate 120 are screwed to each other. That is, the fixed connection manner between the connection plate 110 and the three-point adjustment plate 120 includes various manners, such as integral type or detachable connection, which is not specifically limited in this embodiment.
  • the connecting plate 110 includes a connecting portion and a mounting portion arranged perpendicular to each other, the bottom end of the connecting portion is connected to the three-point adjusting plate 120 , and the mounting portion is connected to the driving module of the 3D printing head.
  • the connecting plate 110 by arranging the connecting plate 110, the ink supply assembly 200 and the ink jet assembly 300 carried on the three-point regulating plate 120 can be synchronously printed with the movement of the driving module.
  • the cover plate 130 is a rectangular flat plate
  • the three-point adjustment plate 120 is a triangular flat plate. It should be noted that the cross-sectional area of the three-point adjustment plate 120 is smaller than that of the cover plate 130 , so that the cover plate 130 can carry the three-point adjustment plate 120 and other components.
  • the cover plate 130 and the three-point adjustment plate 120 are installed in a movable connection manner.
  • the installation distance between the three-point adjustment plate 120 and the cover plate 130 is adjusted by bolts. That is to say, the three-point adjustment plate 120 and the cover plate 130 are connected by bolts with adjustable distances.
  • the adjustment range of the installation distance is 3 mm ⁇ 3.5 mm.
  • the installation distance is 3.2mm.
  • threaded clearance holes are respectively provided at the triangular positions of the lower end surface of the three-point adjustment plate 120, so that bolts are connected with the threaded holes corresponding to the three-point positions of the cover plate 130 to realize the bolt connection, so as to realize the printing bottom plate connected with the cover plate and the printing plate.
  • the distance between the working surfaces is adjustable. And according to actual experience and test results, usually the best inkjet effect is when the adjustment distance is controlled between 3mm and 3.5mm.
  • the cover plate 130 is provided with the three-point adjustment plate 120 .
  • the positioning seat 131 corresponding to the three-point position of the locating seat 131 is installed with a differential head 132 for adjusting the horizontal straightness of the three-point adjusting plate 120 . That is, a positioning seat 131 may be correspondingly provided at the three-point positions of the three-point adjustment plate 120, and a differential head 132 may be correspondingly installed on each positioning seat 131; A differential head 132 is correspondingly mounted on each positioning seat 131 .
  • the positioning seat 131 and the differential head 132 are respectively provided at two positions of the short side of the three-point adjustment plate 120 , and another point of the three-point adjustment plate 120 is fixedly disposed on the cover plate. That is to say, another point is set as a fixed rotation point, and the other two points use the corresponding differential head 132 to cooperate with the positioning seat 131 to abut the three-point adjusting plate 120, so that when the differential heads 132 on both sides of the three-point adjusting plate 120 rotate in the same length When the three-point adjustment plate 120 is firmly abutted, the entire 3D printing head is automatically calibrated to form a stable triangular structure.
  • one end of the differential head 132 has a knob, and the other end is a push rod, and the push rod abuts against the three-point adjustment plate 120 in the horizontal direction.
  • the differential head 132 has an external thread, which is screwed into the internal thread of the positioning seat 131 correspondingly to form a fixed matching structure; a knob is provided at one end of the differential head 132, and the differential head can be adjusted by rotating the knob to match the feeding of the positioning seat.
  • the end face of the push rod is in contact with the corresponding end face of the three-point adjustment plate 120 to form a pushing effect.
  • the printing mechanism in this embodiment can achieve an accurate adjustment of nearly 0.01mm by using a differential head instead of the top wire adjustment, which greatly improves the adjustment accuracy of the straightness and the refinement of the operation. Fine adjustment becomes possible.
  • the ink supply assembly 200 includes an ink cartridge 210 and a shunt pipe 220 that communicate with each other, the ink cartridge 210 is installed on the three-point adjustment plate 120 , and the shunt pipe 220 is installed on the cover plate 130 on.
  • the ink cartridge 210 is installed on the three-point adjustment plate 120
  • the effect of externally placing the ink cartridge 210 is realized, so as to prevent the ink cartridge from being heated due to the heating of the driving board when the ink cartridge is installed inside the printing mechanism, thereby changing the temperature of the ink and causing the ink Viscosity changes affect ink jet quality.
  • a distribution groove is defined on the cover plate 130, and a distribution pipe is formed in the distribution groove. That is, the above-mentioned shunt pipe is formed by arranging the groove structure inside the cover plate 130, and there is no need to separately set the shunt pipe, which further saves space.
  • the ink cartridge is provided with a temperature sensor for detecting the temperature of the ink in the ink cartridge in real time. In this way, it is convenient for the operator to monitor the temperature of the ink cartridge in time to make corresponding operation adjustments.
  • the ink cartridge is a box body made of a non-metallic material.
  • the ink cartridge 210 is a plastic box body.
  • the thermal conductivity of the ink cartridge is reduced by setting the non-metallic material, so that the ink cartridge is less sensitive to external temperature, thereby ensuring that the temperature of the ink in the ink cartridge is kept in a relatively stable use state.
  • the ink cartridge 210 is provided with a negative pressure connector and a negative pressure sensor, the negative pressure connector is connected to the air source system, and the negative pressure sensor detects the negative pressure value of the ink cartridge 210 . In this way, by detecting the pressure in the ink cartridge in real time, it is beneficial to ensure that the nozzle connected to the ink cartridge lifts ink when printing is stopped.
  • the ink cartridge 210 is also provided with a liquid inlet joint, a liquid supply joint and a liquid level sensor, the liquid inlet joint is connected to an external ink system, the liquid supply joint is connected with the nozzle, and the liquid level sensor is used to detect the liquid level of the ink cartridge, To ensure real-time detection and timely ink supply.
  • the shunt pipe 220 includes several branch pipes, and the branch pipes communicate with each other. Specifically, the adjacent branch pipes are detachably communicated through the connecting pipe, so that each branch pipe of the branch pipe can maintain a balanced liquid supply. Further, please refer to FIG. 4 together, the end of each branch pipe is provided with a sealing plug 230 .
  • the connecting pipe at the end of the branch pipe can be removed and then the sealing plug 230 can be installed.
  • the installation and maintenance costs of the equipment are greatly reduced by arranging the shunt pipes.
  • the inkjet assembly 300 includes a printing base plate 310 , a nozzle 320 and a driving board 330 .
  • the printing base plate 310 is connected to the cover plate 130 , and the nozzle head 320 is installed on the
  • the printing base plate 310 is connected to the shunt pipe 220 , and the driving board 330 is inserted into the print head 320 for controlling the print head to eject ink.
  • a plurality of nozzles are provided on the printing base plate 310 , that is, a plurality of nozzles correspond to a nozzle.
  • the drive board 330 is an electrical component used to detect and extract nozzle ejection data.
  • the printing base plate 310 is connected with the cover plate 130, so that the printing base plate 310 carrying the nozzles 320 and the driving board 330 is installed on the cover plate.
  • the cover plate 130 is provided with a power plug 140 and an optical fiber protection box 150 .
  • the optical fiber protection box 150 and the power plug 140 are used to connect the driving board 330 .
  • the print server of the driver board 330 and the driver board 330 are connected by optical fiber communication through the optical fiber protection box 150, thereby replacing the network cable, effectively improving the signal transmission efficiency, reducing line connections, and further reducing the probability of signal interruption and failure.
  • the power plug and the optical fiber protection box are installed on the cover plate 130, and the cover plate 130 and the three-point adjustment plate 120 are not separated all the time.
  • side plates 160 are installed on both sides of the cover plate 130 , and the printing base plate 310 is installed between the two side plates.
  • an installation frame structure is formed between the cover plate, the two side plates and the printing bottom plate, and the nozzle and the driving board are integrated in the installation frame.
  • the overall structure of the printing mechanism is effectively reduced by the driving board 330 being plugged on the nozzle 320, and the plugging method is more conducive to stable data transmission.
  • the nozzle 320 and the shunt pipe 220 are connected by a connecting pipe.
  • the two ends of the nozzle are respectively provided with joints, and the corresponding branch pipe is provided with a liquid outlet joint, and the liquid outlet joint and the joint are connected by a connecting pipe.
  • each of the nozzles 320 is arranged on the printing base plate 310 in an array, and each row of the nozzles 320 is arranged corresponding to one of the branch pipes.
  • four nozzles are arranged side by side, two branch pipes are correspondingly arranged on the cover plate, each branch pipe corresponds to a row of nozzles, and each row of nozzles has four joints, then four outlet pipes are correspondingly arranged on the branch pipe. liquid connection.
  • two ends of the cover plate 130 are connected with fixing ribs 340, and the fixing ribs 340 are insulated and connected to the driving board. 330 , for limiting the displacement of the driving board 330 .
  • the fixing rib 340 and the driving board 330 are correspondingly provided with threaded holes, and insulating bolts are inserted between the corresponding threaded holes. That is, the fixing ribs 340 are provided with threaded holes, the driving board 330 is provided with threaded holes correspondingly, and insulating bolts are inserted through the threaded holes between the two components.
  • the driving board 330 is connected to the fixing ribs 340 installed on the cover plate through insulating bolts, which is beneficial to reduce the shaking amplitude of the driving board 330 during the printing process, and prevent problems such as loss of data and damage to pins.
  • the fixing rib 340 is surface-treated with Teflon. That is, on the premise of ensuring insulation, the fixed ribs are used to assist the drive board of the printhead to ensure that the drive board will not shake greatly during the movement of the printing mechanism, preventing data loss and pin damage.
  • the above-mentioned 3D printing head by installing the ink cartridge on the three-point adjustment plate, realizes the effect of external ink cartridge, which effectively avoids the heating of the ink cartridge due to the heating of the drive board, thereby changing the ink temperature, and then causing the ink viscosity change and causing the inkjet quality to decline.
  • the external ink cartridge makes it possible to rely on natural wind to cool the ink cartridge simply and effectively during the printing process; and the three-point adjustment plate is movably installed on the cover plate, which is conducive to the smooth and efficient adjustment of the height and straightness of the printing mechanism; Further, by arranging a shunt pipe on the cover plate, several liquid inlet pipes connected between the ink cartridge and the nozzle can be effectively replaced, which greatly simplifies the installation complexity of the printing mechanism and is beneficial to reduce installation and maintenance costs.
  • the printing base plate is provided with a plurality of nozzles, each nozzle is provided with a plurality of nozzles, and the driving board controls each nozzle to eject ink according to the data electrical signal of the printed image.
  • the plurality of nozzles here refers to two or more.
  • Each nozzle is connected with a driving board, each driving board is connected by a communication cable, and each nozzle is controlled by the driving board to drive its ink jet.
  • the specific number of nozzles can be one or more. When only one nozzle is set, one driver board is corresponding to the nozzle, and when multiple nozzles are set, each nozzle can be corresponding to a driver board. .
  • N nozzles are integrated into one module, and each module is set corresponding to one driver board, wherein N is a positive integer greater than or equal to 2.
  • the N nozzles are integrated into a module, and then the module is installed on the printing base plate.
  • three nozzles can be set to form a module, and each module corresponds to a driver board.
  • the modular installation of the print head is beneficial to the control of the installation accuracy of the print head and the guarantee of the processing accuracy of the print head base plate.
  • the mounting frame in the above embodiments includes a connecting plate, a three-point adjustment plate and a cover plate, and the present application also provides a different mounting frame structure.
  • the mounting frame 100 includes a mounting plate, an adjusting plate 175 and a support frame.
  • the mounting plate is used to connect the drive module, and the support frame is connected to the adjusting plate 175 for installing the ink supply. components and inkjet components.
  • the support frame is a main frame structure for installing the ink supply assembly and the inkjet assembly.
  • the mounting plate is connected to the support frame, specifically, can be connected to the top of the support frame to be connected to the drive module, and the drive module controls the movement of the overall structure of the drive print head.
  • the specific inkjet assembly includes a printing base plate 310 connected to the mounting frame 100 , and the printing base plate 310 is used for installing the nozzles.
  • the adjusting plate 175 specifically includes a rectangular plate, and may also include other structures matched with the rectangular plate as required, and is mainly used to adjust the horizontal straightness between the printing base plate 310 and the printing work surface.
  • parallelism adjustment blocks 172 and perpendicularity adjustment blocks 173 are installed on both sides of the adjustment plate 175, and the parallelism adjustment blocks 172 are installed on both sides of the adjustment plate 175.
  • the parallelism adjusting blocks 172 on both sides can be tightened or loosened to make the print head parallel to the stepping direction module;
  • the verticality can be adjusted by adjusting the verticality adjusting block 173 installed on the adjusting plate 175 .
  • each ink cartridge 210 there are multiple ink cartridges 210 , one end of the ink supply pipe of each ink cartridge 210 is connected to the liquid supply joint 214 of the ink cartridge 210 , and the other end is connected to the liquid inlet joint of the shunt pipe 220 , and the shunt pipe 220 has a plurality of liquid outlet joints 221 , every two liquid outlet joints 221 of the shunt pipe 220 are respectively connected with two ink supply joints of one nozzle.
  • an ink cartridge 210 is installed on the left and right ends of the installation frame 100.
  • the shunt pipe 220 has a liquid inlet joint and a plurality of liquid outlet joints 221.
  • the liquid inlet joint of the shunt pipe 220 is connected to the liquid supply joint 214 of the ink cartridge 210.
  • Each two liquid outlet joints 221 of the 220 corresponds to two ink supply joints of one nozzle, so as to supply ink to the corresponding nozzle.
  • the ink cartridge 210 When the ink cartridge 210 is installed outside the installation frame 100 , the ink is transported to the ink chambers of the nozzles in the installation frame 100 through the ink supply pipe and the branch pipe 220 .
  • the ink cartridge 210 can also be installed in the installation frame 100 , for example, the ink cartridge 210 is installed in the installation frame 100 and is disposed close to the nozzle.
  • the ink cartridge 210 can be installed above the print head, so that the ink can enter the ink chamber of the print head vertically.
  • a plurality of print heads share one ink cartridge 210 , so as to facilitate the ink supply of the print heads and the stabilization of the negative pressure in the ink cartridge 210 .
  • the shunt pipe 220 includes a main pipe and several parallel branch pipes connected to the main pipe.
  • the main pipe is provided with a liquid inlet joint, and each branch pipe is respectively provided with two liquid outlet joints 221.
  • Each branch pipe is connected to the installation frame 100 and is located in the printer Above the bottom plate 310 and parallel to the printing bottom plate 310 .
  • the liquid material of the ink cartridge 210 passes through the main pipe and then enters the corresponding nozzle through the branch pipe, and each branch pipe is parallel to the printing bottom plate 310 to supply ink to the nozzles on the printing bottom plate 310 .
  • two ends of each branch pipe are respectively fixedly connected with connecting brackets, and the connecting brackets are fixedly connected with the mounting frame 100 , such as screw connection.
  • the connecting bracket may be an L-shaped plate, one side of the L-shaped plate is fixedly connected with the branch pipe, and the other side is fixedly connected with the installation frame 100 .
  • the mounting frame 100 includes a protective cover disposed around the inkjet assembly.
  • the protective cover is arranged around the inkjet assembly, that is, there are protective structures around the inkjet assembly, and the protective cover protects the inkjet assembly.
  • the structure of the specific protective cover can be set as required, which is not specifically limited here.
  • the ink cartridge 210 When the ink cartridge 210 is installed in the mounting frame 100, that is, it is accommodated in the protective cover, and the ink cartridge 210 is arranged close to the nozzle to reduce the length of the infusion line, which is conducive to efficient ink jetting; when the ink cartridge 210 is installed outside the mounting frame 100, the ink cartridge 210 is located in The protective cover is installed and installed outside, specifically, the ink cartridge 210 can be installed on the adjustment plate 175. Such an external arrangement is beneficial to the heat dissipation of the ink cartridge 210, and is more beneficial to ensure the quality of ink supply. It should be noted that the 3D printing head can select the applicable 3D printer model according to the needs and select the 3D printing head suitable for the above two structures.
  • the installation frame is not limited to the structure of the above-mentioned embodiments.
  • the installation frame includes opposite side plates and several transverse ribs connecting the two side plates, and the spray head 320 is arranged at the bottom. on the transverse ribs. That is, the inkjet frame is formed by the opposite side plates and several transverse ribs.
  • the number of transverse ribs can be set as required. As shown in Figure 9, three layers of transverse ribs are provided, and each transverse rib is preferably a hollow square tube.
  • the sprinkler head 320 is installed on the lateral rib at the bottom, which means that the sprinkler head 320 is arranged on the lateral rib near the bottom end.
  • the sprinkler head 320 is arranged on the first bottom from top to bottom. -2 layers of transverse ribs.
  • the nozzle 320 is disposed on the bottommost transverse rib, that is, the nozzle 320 is located at the lowermost end of the inkjet assembly, so that the inkjet of the nozzle 320 is not blocked or interfered by the lower transverse ribs.
  • the spray head 320 is preferably installed on the bottom rib 161 .
  • the plurality of spray heads 320 are arranged in an array along the transverse ribs, and specifically, they can be distributed in a matrix of two columns on the transverse ribs at the bottom.
  • the nozzles 320 are provided with two rows, and each row is provided with four groups of nozzles 320, that is, eight groups of nozzles 320 are arranged in total, and the eight groups of nozzles 320 are arranged at the bottom.
  • the ribs 161 are arranged symmetrically in two rows.
  • the arrangement of the nozzles 320 can be expanded or extended according to the length and width of the inkjet frame, so that the nozzles 320 fill the space surrounded by the bottom ribs 161 of the inkjet frame. According to the number of spray heads 320, several groups of spray heads 320 may be set as a group.
  • the driving board 330 is disposed on the spray head 320 , or the driving board 330 is directly seated on the spray head 320 for driving the spray head 320 to operate.
  • the driving board 330 is fixedly connected to the transverse rib in the middle.
  • the transverse rib includes the above-mentioned bottom rib 161 , middle rib 162 and top rib 163 , a corner of the driving board 330 is preferably fixed on the middle rib 162 .
  • guide rail grooves 165 are provided on the opposite side plates, and a partition plate 164 is slidably installed in the guide rail groove 165.
  • 164 A fixed part that locks or unlocks the side panel.
  • the ink cartridge 210 is arranged in the middle of the ink supply frame and supported by the partition plate 164 . That is, in normal use, the partition plate 164 is locked in the guide groove 165 by the fixing part, so as to prevent the partition plate 164 from slipping out of the guide groove 165 during the operation of the inkjet assembly.
  • the fixed part is unlocked, and the partition plate 164 can be pulled out from the guide rail groove 165 .
  • a spacer 164 is provided above the driving board 330 .
  • the spacer 164 is clamped in the middle of the inkjet assembly through the guide groove 165 provided on the side plate, and the spacer 164 can slide along the guide groove 165 .
  • the partition 164 provides support for the ink cartridge 210 , that is, the ink cartridge 210 is placed on the partition 164 .
  • the fixing component may be a locking screw provided at the edge of the guide rail groove 165 and the side plate, and the locking screw locks and positions the partition plate 164 and the ink cartridge 210 .
  • the partition plate 164 only needs to be pulled out, which solves the problem that the ink cartridge 210 needs to be removed from the installation frame before maintenance and repair.
  • the transverse rib located in the middle position is provided with a plurality of through holes, and the through holes are used for connecting the compressed air cooling drive board 330 .
  • the transverse rib includes the bottom rib 161, the middle rib 162 and the top rib 163, a plurality of through holes are provided on the surface of the middle rib 162 facing the driving board 330, and the external compressed cold air source is used to provide the The compressed cold air is introduced into the middle rib 162, and the compressed cold air is blown to the drive board 330 through the through hole provided on the middle rib 162, thereby providing the drive board 330 with an air cooling method other than the built-in heat sink , the cooling of the drive board 330 is accelerated, and the change in the temperature of the liquid material in the nozzle 320 caused by the heating of the drive board 330 is avoided.
  • the air cooling method takes all the heat generated by the drive board 330 out, it is avoided or greatly reduced. Corrosion of the spray head 320 by the liquid material due to changes in the temperature of the liquid material is reduced, the rate at which the spray head 320 is corroded by the liquid material is reduced, and the service life of the spray head 320 is improved in disguised form.
  • the ink inlet port of the ink cartridge 210 is provided with a defoamer 650, as shown in FIG. 8 .
  • the defoamer 650 may be a device that uses centrifugal force to break foam and separate gas and liquid.
  • the outer edge of the ink cartridge 210 is provided with a degassing chamber.
  • the setting of the degassing chamber is beneficial to the secondary degassing of the ink in the ink cartridge 210, so as to ensure that the ink added to the nozzle 320 has a low gas content and will not block the nozzles. That is, by arranging a cavity structure on the outer edge of the ink cartridge 210, a gas-liquid separation structure can be formed in the cavity through the direction of the wall surface, etc., so as to further degas the ink.
  • a gas-liquid separation structure can be formed in the cavity through the direction of the wall surface, etc., so as to further degas the ink.
  • the ink supply assembly further includes a liquid material tank 610, a liquid supply pump 630 and a liquid supply filter, the liquid supply pump 630 and the supply liquid
  • the liquid filter is arranged in communication between the liquid material tank 610 and the ink cartridge 210 .
  • the connection between the components can be through the liquid material pipe 640, and if the layout allows, the adjacent components can also be directly connected through a joint.
  • the liquid supply pump 630 is installed at the rear end of the liquid material tank 610 , and the ink is pumped out through the liquid supply pump 630 , enters the liquid supply filter for filtration, and the filtered ink is then sent to the ink cartridge 210 .
  • the liquid supply pump 630 and the liquid supply filter are connected between the liquid material tank 610 and the ink cartridge 210, and the specific front and rear positions of the liquid supply pump 630 and the liquid supply filter can be set as required.
  • FIG. 8 shows that the liquid supply pump 630 and the liquid supply filter are sequentially connected between the liquid material tank 610 and the ink cartridge 210 , and the positions of the liquid supply pump 630 and the liquid supply filter can also be exchanged as required.
  • the liquid supply filter includes a primary filter 621 connected to the outlet of the liquid supply pump 630 and a secondary filter 622 connected to the outlet of the primary filter 621 .
  • the connection here refers to the communication between the connected components through the connection. That is, the ink enters the ink cartridge 210 after being filtered by the primary filter 621 and then filtered by the secondary filter 622 . Through multi-stage filtration, the filtration accuracy of the ink is guaranteed to improve the printing effect.
  • the filtering level of the primary filter 621 should not be greater than the filtering level of the secondary filter 622 .
  • the ink supply assembly further includes a degassing membrane disposed at the outlet of the primary filter 621, and the degassing membrane is used to degas the gas in the ink.
  • the setting of the degassing membrane is beneficial to the desorption of the air in the ink.
  • Degassing membrane is a membrane separation product that uses the principle of diffusion to remove gases in liquids, such as carbon dioxide, oxygen, ammonia nitrogen, etc. For its specific structure and working principle, please refer to the prior art, which will not be repeated here.
  • a liquid level sensor 670 is provided in the liquid material tank 610 .
  • the liquid level sensor 670 can be specifically arranged on the inner side wall of the liquid material tank 610 to detect the liquid level in the liquid material tank 610, so as to facilitate the relevant personnel to know the liquid level in the liquid material tank 610 in time, or to realize the liquid material by setting the control module. Monitoring of liquid level in tank 610.
  • an exhaust device 612 is provided on the top of the liquid material tank 610 to facilitate the exhaust of the liquid material tank 610 .
  • the specific structure of the exhaust device 612 may refer to the prior art.
  • the air inlet of the ink cartridge 210 is specifically disposed on the top of the ink cartridge 210 .
  • the ink supply assembly further includes a negative pressure box 240 connected to the ink cartridge 210.
  • the ink cartridge 210 has an ink supply chamber 211 and a return chamber.
  • the ink chamber 212 and the negative pressure box 240 have an ink supply negative pressure chamber 241 and an ink return negative pressure chamber 242 .
  • the ink supply chamber 211 is used to supply liquid material to the print head 320
  • the ink return chamber 212 is used to collect the liquid material from the print head 320 .
  • the ink supply negative pressure chamber 241 provides negative pressure for the ink supply chamber 211, so that the nozzle 320 performs the ejection action to eject ink; backflow.
  • the liquid material flows into the nozzle 320 from the ink supply chamber 211 under the action of its own weight, and the nozzle 320 performs the ejection action under the action of the ink supply negative pressure chamber 241, that is, the nozzle 320 performs the printing operation; at the same time, part of the liquid material returns to the ink.
  • the nozzles 320 are returned to the ink return chamber 212 , thereby realizing the circulation of the liquid material in each nozzle 320 and improving the problem that the static liquid material easily blocks the nozzles 320 .
  • the uninterrupted circulating flow of the liquid material in the spray head 320 is realized.
  • the liquid material is divided into two parts in the nozzle 320, one part is used for injection and the other part is returned, so as to realize the circulating flow of the liquid material in the nozzle 320 and prevent the liquid material from being caused by the static liquid material in the nozzle head. Block within 320.
  • the injection and circulation of the liquid material in the nozzle 320 are relatively independent, so that the circulation of the liquid material is realized without affecting the normal operation of the nozzle 320, and the static state is avoided.
  • the problem that the liquid material is easy to block the nozzle 320.
  • the ink supply assembly of the above structure is mainly suitable for 3D printers, especially for sand 3D printers. It uses the mutual cooperation between the print head and the powder spreading device to form a product with a certain shape.
  • the problem of unsmooth jetting and large fluctuation caused by the ink supply method of the diaphragm pump also realizes the micro-circulation of the liquid material in the nozzle 320 .
  • the spray head 320 is located at the lowermost end of the ink jet assembly, so as to achieve the purpose of spraying the liquid material on the working surface.
  • the driving board 330 is directly placed on the spray head 320 to drive the spray head 320 to spray according to the setting.
  • the ink cartridge 210 is placed above the drive board 330, and the print head 320 is in communication with the ink supply chamber 211 and the ink return chamber 212 of the ink cartridge 210.
  • the ink cartridge 210 is connected to the print head 320 through the ink supply tube 243 and the ink return tube 244, respectively, that is,
  • the ink supply chamber 211 is connected to the nozzle head 320 through the ink supply pipe 243
  • the ink return chamber 212 is connected to the nozzle head 320 through the ink return pipe 244 .
  • the negative pressure box 240 is specifically placed above the ink cartridge 210 , and the negative pressure box 240 provides negative pressure for the ink cartridge 210 and the nozzle 320 to realize the outflow and circulation of the liquid material in the ink cartridge 210 and the ejection and stop of the nozzle 320 .
  • the negative pressure box 240 is provided with an ink supply negative pressure chamber 241 and an ink return negative pressure chamber 242 .
  • both the ink supply negative pressure chamber 241 and the ink return negative pressure chamber 242 are provided with a negative pressure inlet and a negative pressure outlet, and the negative pressure pipe A is connected to the negative pressure inlet of the ink supply negative pressure chamber 241, which is the negative pressure for ink supply.
  • the cavity 241 provides negative pressure; the negative pressure pipe B is connected to the negative pressure inlet of the ink return negative pressure cavity 242 to provide negative pressure for the ink return negative pressure cavity 242; the ink supply negative pressure cavity 241 provides negative pressure for the ink supply cavity 211, and returns
  • the ink negative pressure chamber 242 provides negative pressure for the ink return chamber 212, so that the negative pressure in the ink return chamber 212 and the ink supply chamber 211 are relatively independent, so that the two liquid flows of ejection and ink return are independent of each other, so that the inkjet assembly can operate normally. In the case of spraying, the liquid flow can be circulated back, that is, the dynamic circulation of the liquid material is realized. At the same time, since the negative pressures of ejection and ink return are relatively independent, the ejection pressure is not affected by the negative pressure of recirculation, so that the ejection operation is not affected.
  • the ink cartridge 210 is provided with an ink supply chamber 211 and an ink return chamber 212 ; the ink supply chamber 211 is provided with a plurality of liquid material inlets, and the liquid material inlets are used for supplying ink into the ink supply chamber 211 . Further, the ink return chamber 212 is provided with a liquid material outlet, and the liquid material outlet is connected with the liquid material recovery barrel 252 .
  • the ink supply chamber 211 continues to grow with the array arrangement of the nozzles 320, several liquid material inlets can be set on the ink supply chamber 211, so as to ensure that the liquid material can be uniformly, adequately and stably stored in the ink supply chamber 211.
  • the ink supply chamber 211 is provided with a plurality of dividing plates 213 , and the dividing plates 213 divide the entire ink supply chamber 211 into a plurality of sub-ink supply chambers 211 .
  • each sub-ink supply chamber 211 can supply ink to 2-3 nozzles 320 . Due to the small volume of the sub-ink supply chamber 211, the obvious shaking of the liquid material can be avoided during the operation of the ink supply assembly, thereby reducing the instability of the negative pressure in the nozzle 320 caused by the violent shaking of the liquid material, thereby affecting the continuity of printing and ejection. ink quality.
  • the number of sub-ink supply chambers 211 may be one, two, or three or more, so as to supply liquid material for the nozzle 320 .
  • each sub-ink supply chamber 211 is provided with a liquid material inlet to be connected with the liquid material tank 610 , and the liquid material tank 610 supplies material to the respective ink supply chambers 211 . That is, one liquid material inlet can be provided above each sub-ink supply chamber 211, so that the liquid material in each sub-ink supply chamber 211 is balanced and sufficient.
  • the ink supply tube 243 and the ink return tube 244 are arranged between the partition plate 164 and the drive board 330 . It is provided between the baffle 164 and the transverse ribs in the middle. That is, a number of ink supply tubes 243 and a number of ink return tubes 244 are provided between the partition plate 164 and the nozzle head 320 .
  • the negative pressure box 240 is specifically arranged on the top rib 163 , and the ink cartridge 210 is placed on the partition plate 164 .
  • each group of nozzle heads 320 is provided with an ink supply pipe 243 and an ink return pipe 244, and one end of the ink supply pipe 243 is connected to the nozzle head 320 , the other end of the ink supply tube 243 is connected with the ink supply chamber 211 ;
  • the upper end of the ink supply tube 243 is connected to the ink supply chamber 211 through the through hole provided on the partition plate 164 , the lower end of the ink supply tube 243 is connected to the nozzle 320 , and the liquid material passes through the ink supply tube 243 under the action of its own weight.
  • the ink supply chamber 211 flows into the nozzle head 320, and the nozzle head 320 performs the ejection action under the action of the ink supply negative pressure chamber 241, that is, the nozzle head 320 performs the printing operation;
  • One end of the joint 245 is connected, the other end of the right-angle through-board joint 245 is connected with the right-angle pagoda joint 246 arranged on the ink return chamber 212, the lower end of the ink return chamber 212 is connected with the nozzle 320, and the liquid material is in the ink return negative pressure chamber 242.
  • the lower end of the ink return pipe 244 is returned to the ink return chamber 212 through the ink return pipe 244, the right-angle through-board joint 245 and the right-angle pagoda joint 246, so as to realize the circulation of the liquid material in each nozzle 320, and improve the ease of the static liquid material.
  • the problem of blocking the spray head 320 is to realize the circulation of the liquid material in each nozzle 320, and improve the ease of the static liquid material.
  • the liquid supply pump 630 is connected between the liquid material tank 610 and the ink supply chamber 211 .
  • the liquid material tank 610 is connected to the liquid material inlet of the ink supply chamber 211 , and provides liquid material for the ink supply chamber 211 through the driving of the liquid material pump.
  • a liquid supply filter 620 is further provided between the liquid material tank 610 and the ink supply chamber 211 , that is, the liquid supply pump 630 and the liquid supply filter 620 are communicated and arranged between the liquid material tank 610 and the ink supply chamber 211 , so as to further improve the purity of the liquid material entering the ink supply chamber 211, so that the 3D printing device can work better.
  • the liquid supply filter 620 please refer to the relevant settings in the above-mentioned embodiments, and details are not described herein again.
  • the ink supply assembly further includes a connected liquid return pump 251 and a liquid material recovery bucket 252 , the liquid return pump 251 communicates with the ink return chamber 212 , and the liquid material recovery bucket 252 communicates with the liquid material tank 610 .
  • FIG. 13 is a schematic diagram of the liquid material circulation of the ink supply assembly 200.
  • the liquid material in the ink return chamber 212 enters the liquid material recovery tank 252 for recovery under the action of the liquid return pump 251, and the liquid material recovery tank 252 is connected to the liquid material tank 610, so as to realize the circulation of the liquid material and avoid the discharge of the liquid material. environmental pollution and waste.
  • the ink supply assembly includes a liquid return pump 251, a liquid material recovery bucket 252 and a liquid return filter 253 connected in sequence.
  • the liquid return pump 251 communicates with the ink return chamber 212, and the liquid return filter 253 communicates with the liquid material tank 610. That is, a liquid return filter 253 is also provided between the liquid material recovery barrel 252 and the liquid material tank 610 to filter the recovered liquid material before entering the liquid material tank 610 for reuse.
  • a liquid level sensor is provided in the ink supply chamber 211 and/or the ink return chamber 212 .
  • the liquid level sensor sends a liquid addition signal.
  • a set amount of liquid material can be added to the ink supply chamber 211 manually or automatically under the control of the system.
  • the liquid supply pump 630 can be used to add liquid to the ink supply chamber 211, and the liquid supply pump 630 is a liquid addition pump. .
  • the ink supply chamber 211 is provided with a liquid level sensor, and the ink supply chamber 211 is connected with the liquid supply pump 630.
  • the liquid supply pump 630 is started to send the liquid to the ink supply chamber.
  • the liquid material is transported in 211 , so as to ensure that the ink supply chamber 211 can continuously supply ink to the nozzle 320 .
  • the liquid level sensor sends a liquid pumping signal.
  • the liquid material in the ink return chamber 212 is drawn out into the liquid material recovery bucket 252 .
  • the liquid material in the ink return chamber 212 is drawn out by the liquid return pump 251 . That is, the ink return chamber 212 is connected to the liquid return pump 251 .
  • the liquid return pump 251 is activated to transport the liquid material to the liquid material recovery bucket 252 .
  • the liquid return pump 251 is a peristaltic pump.
  • the ink supply tubes 243 are in one-to-one correspondence with the nozzle heads 320, that is, each nozzle head 320 corresponds to an ink supply tube 243;
  • the upper ends are connected with a plurality of right-angle through-board joints 245 arranged on the partition plate 164, while there is only one right-angled pagoda joint 246 arranged on the ink return chamber 212, that is, the other ends of the plurality of right-angled through-board joints 245 are collected and connected.
  • the liquid material can be returned to the ink return chamber 212 .
  • the above ink supply components can all be implemented on the 3D printing device, thereby improving the inkjet component 300 and the ink supply component 200 of the 3D printing device, improving the printing efficiency, realizing the recycling of liquid materials, and also improving the normal operation time of the device.
  • the 3D printing head provided by the present invention further includes a cleaning component, the cleaning component includes a cleaning pool and a scrubbing member, the cleaning pool is used for placing cleaning liquid, and the scrubbing member is movably installed on the cleaning pool for scrubbing the nozzle. .
  • the nozzle plate of the nozzle will be contaminated with a lot of fine dust and resin droplets, which will affect the inkjet effect. Therefore, through the setting of the above cleaning components, the cleaning liquid is placed in the cleaning pool, and the scrubbing parts are installed in the cleaning pool, and the nozzles are effectively cleaned by the scrubbing parts to ensure the inkjet quality.
  • the contaminated scrubbing parts can be cleaned with cleaning liquid, and the nozzles can be cleaned again.
  • the specific shape of the cleaning pool is not limited here, and can be set as required.
  • FIG. 6 is a schematic structural diagram of the cleaning assembly.
  • the scrubbing member includes a roller 412 and a roller driver.
  • the roller 412 is rotatably installed in the cleaning pool 411, and the outer edge of the roller 412 is provided with a sponge layer 413.
  • the roller driver drives and connects the roller. 412. That is, the roller 412 is rotated and installed in the cleaning tank 411, and the roller 412 is rotated under the driving of the roller driving member.
  • the roller driving member may be a driving device capable of outputting torque, such as a motor.
  • the output shaft of the motor is coaxially connected with the shaft of the roller wheel 412 to drive the roller wheel 412 to rotate.
  • the outer edge of the roller 412 is provided with a sponge layer 413, preferably a circle of sponge layer 413 is wrapped around the outer peripheral surface of the roller 412, so that the roller 412 rotates and the print head moves simultaneously, and the nozzle 320 is cleaned through the sponge layer 413.
  • the sponge layer 413 is soft in texture, it can effectively clean the fine dust, resin droplets and other droplets in the nozzle plate part during the cleaning process of the nozzle, without damaging the nozzle plate, and without the force exerted on the nozzle plate. Too large to scrape off the nozzle plate.
  • the sponge layer 413 can also be replaced with a wiper blade, that is, the wiper blade is fixedly connected to the roller 412 , and the nozzle 320 is cleaned by the wiper blade rotating with the roller 412 .
  • the material of the wiper blade is hard, and the wiper blade itself is not easy to wear and has a long service life.
  • the scrubbing member may also adopt a structure such as a linear motion type scrubbing cloth.
  • the scrubbing member also includes a lifting member 416 and a bracket 418.
  • the lifting member 416 is arranged at the bottom of the cleaning pool 411, the bracket 418 is fixedly connected to the output end of the lifting member 416, and the roller 412 and the bracket 418 rotate. connect. That is, the roller 412 is rotated and installed through the bracket 418, and the output end of the jacking member 416 is fixedly connected to the bracket 418, thereby driving the bracket 418 to move up and down to meet the cleaning requirements of different heights.
  • the specific structure of the bracket 418 can be set as required, for example, it is set to include a lateral support, and the roller 412 is rotatably connected to the lateral support.
  • the longitudinal guide member may be a longitudinal guide rail arranged in the up-down direction, and the two ends of the transverse support member are provided with sliding blocks which are slidably matched with the longitudinal guide rail.
  • the installation shaft of the roller 412 extends out of the sponge layer 413 and is rotatably connected with the bracket 418 .
  • the jacking member 416 may specifically be a jacking cylinder, and the jacking cylinder is fixed on the bottom of the cleaning tank 411 , and may specifically be the bottom surface of the cleaning tank 411 , and its telescopic rod is fixed on the bracket 418 .
  • Other driving components such as hydraulic cylinders can also be used for the jacking member 416 as required.
  • the cleaning assembly further includes an integral jacking mechanism, which includes a support seat and an integral jacking assembly, the support seat is disposed on the edge of the cleaning pool 411, and the integral jack
  • the lifting assembly is installed on the support base, and is used for lifting or lowering the cleaning assembly as a whole.
  • the specific integral jacking assembly can be a telescopic driving member such as a cylinder, and one end of the telescopic driving member is fixedly installed to provide a supporting force. The other end is fixedly connected with the support base to drive the support base to rise or fall, thereby driving the cleaning assembly fixedly connected to the support base to rise or fall as a whole, which is more conducive to reducing the wear of the print head and the cleaning assembly during cleaning.
  • a cleaning brush 415 for cleaning the sponge layer 413 is installed on the inner wall of the cleaning pool 411 .
  • the cleaning brush 415 By disposing the cleaning brush 415, the sponge layer 413 can be cleaned.
  • the installation position of the cleaning brush 415 should be such that the head of the cleaning brush 415 is in contact with the sponge layer 413 to clean it. If the cleaning brush 415 is set horizontally, its tail end, that is, the brush handle, is fixedly connected to the side wall of the cleaning pool 411, and the head, that is, the bristle portion, is in contact with the sponge layer 413.
  • the bristles of the cleaning brush 415 may specifically be soft bristles such as silicone and plastic.
  • a scraper 414 for squeezing the sponge layer 413 is also provided on the inner wall of the cleaning pool 411 .
  • the cleaning liquid absorbed by the sponge layer 413 is squeezed by the scraper 414.
  • the head of the scraper 414 should be in contact with the sponge layer 413 to apply pressure to the sponge layer 413 and squeeze it dry to better absorb the fine dust on the surface of the nozzle. and resin droplets.
  • the scraper 414 is located above the cleaning brush 415 , and the liquid level of the cleaning liquid is located between the scraper 414 and the cleaning brush 415 . Then, with the rotation of the roller 412, the sponge layer 413 is washed by the cleaning liquid in the cleaning liquid, and the sponge layer 413 is washed by the cleaning brush 415, and then the cleaned sponge layer 413 is rotated to the position of the scraper 414, and is washed by the scraper 414.
  • the pressurizing action of the machine squeezes out the adsorbed cleaning liquid, and then rotates and contacts the nozzle to clean the nozzle.
  • the sponge layer 413 can be easily cleaned and dried, so as to better clean the nozzle 320 .
  • the sponge layer 413 can also be replaced with a new sponge layer 413 after a period of use, and the cleaning brush 415 and the scraper 414 do not need to be provided.
  • the scrubbing member is not limited to the above-mentioned roller mechanism.
  • the scrubbing member includes a scrubbing installation plate, a driving member and a cleaning block, and the scrubbing installation plate is rotatably installed in the cleaning pool,
  • the driving member is connected with the scrubbing installation plate to drive the scrubbing installation plate to rotate, and the cleaning block is arranged on the surface of the scrubbing installation plate.
  • the scrubbing installation plate is driven by the driving member to drive the cleaning block to rotate, so as to scrub the nozzle.
  • the rotation angle of the specific cleaning block can be set correspondingly according to the scrubbing needs and the size of the cleaning block.
  • the cleaning block When the cleaning block is rotated to contact the nozzle head 320, the nozzle head 320 is scrubbed, and when it is rotated to be immersed in the cleaning solution, it is cleaned accordingly.
  • the cleaning block is arranged on the scrubbing mounting plate through a pressing plate.
  • pressing plates are respectively provided at opposite ends of the cleaning block, the pressing plates are fixedly connected with the scrubbing installation plate, and the two ends of the cleaning block are pressed between them, so as to realize the fixing of the cleaning block.
  • the cleaning block may be a sponge or a flexible material such as rubber.
  • the cleaning tank 411 is further provided with a spray mechanism
  • the spray mechanism includes a connecting pipe and a plurality of sprayers
  • the connecting pipe is arranged on the side of the scrubbing installation plate, each sprayer
  • the spaced communication is provided on the connecting pipe. That is, a connecting pipe is arranged on the side of the scrubbing installation plate, and a plurality of sprayers are arranged in communication with the connecting pipe, and the plurality of sprayers are arranged at intervals, preferably evenly arranged.
  • the cleaning block is sprayed with a sprayer to clean the cleaning block for better spray head scrubbing.
  • the spray mechanism can also be arranged at other positions in the cleaning tank 411, and the nozzle of the sprayer can be directed toward the cleaning block.
  • the spray mechanism can be connected to the cleaning tank 411 , and the nozzle of the sprayer is directed toward the roller wheel 412 .
  • the bottom of the cleaning tank 411 is provided with a waste liquid box.
  • a valve is provided at the bottom of the cleaning tank 411, and the valve is closed during cleaning.
  • the valve is opened, and the cleaned waste liquid in the cleaning tank 411 flows into the waste liquid box for collection, thereby keeping the cleaning liquid in the cleaning tank 411 clean.
  • the waste liquid in the waste liquid box can be reused after subsequent purification treatment and the like.
  • the cleaning tank 411 and the waste liquid box can be connected by pipelines as required, and the valves can be specifically arranged in the pipelines.
  • a liquid level sensor 417 is also provided in the cleaning tank 411 .
  • the amount of the cleaning liquid is controlled according to the feedback of the liquid level sensor 417, so that the precise control of the liquid level can be realized.
  • the specific structure and working principle of the liquid level sensor 417 please refer to the prior art, which will not be repeated here.
  • the 3D printing head further includes an air source device matched with the ink supply assembly.
  • FIG. 7 is a schematic structural diagram of a gas source device.
  • the ink cartridge of the ink supply assembly has at least two air inlets
  • the air source device includes a first negative pressure generator 531 and a second negative pressure generator 532, an air outlet of the first negative pressure generator 531 and a second negative pressure generator
  • the air outlets of 532 are respectively connected with at least two air inlets of the ink cartridge for introducing negative pressures of different pressures into the ink cartridge.
  • the connection here refers to the communication between the connected components through the connection.
  • the ink cartridge has at least two air inlets, and the positions of the two air inlets can be set as required.
  • both the first negative pressure generator 531 and the second negative pressure generator 532 may use conventional equipment capable of generating negative pressure, such as a negative pressure pump.
  • the first negative pressure generator 531 and the second negative pressure generator 532 are respectively connected to the ink cartridge 210 through the negative pressure pipe 660, and the first negative pressure generator 531 and the second negative pressure generator 532 are connected to different air inlets of the ink cartridge. connect.
  • the first negative pressure generator 531 and the second negative pressure generator 532 can also be directly connected to different air inlets of the ink cartridge through negative pressure joints.
  • the first negative pressure generator 531 and the second negative pressure generator 532 are respectively connected to different air inlets of the ink cartridge; when the ink cartridge 210 is provided with three or more air inlets In the case of an air inlet, the first negative pressure generator 531 can be connected to at least one of the multiple air inlets of the ink cartridge, and the corresponding second negative pressure generator 532 can be connected to at least one of the remaining air inlets of the ink cartridge.
  • the distance between the air inlet of the ink cartridge connected to the first negative pressure generator 531 and the air inlet of the ink cartridge connected to the second negative pressure generator 532 is as large as possible, so that the ink in the ink cartridge can be affected by the pressure difference. fuller circulation flow. If air inlets are provided at opposite ends of the ink cartridge, respectively, the first negative pressure generator 531 and the second negative pressure generator 532 are respectively connected to the air inlets at both ends.
  • ink cartridge 210 in FIG. 8 only shows one air inlet, and only the first negative pressure generator 531 is shown correspondingly connected to it, and the second negative pressure generator 532 is not shown.
  • the first negative pressure generator 531 and the second negative pressure generator 532 Through the setting of the first negative pressure generator 531 and the second negative pressure generator 532, negative pressure is added to at least two air inlets of the ink cartridge at the same time, and the negative pressure values of the two air inlets are adjusted at this time, The pressure difference is generated, and the ink in the ink cartridge can be circulated, avoiding the accumulation of tiny impurities and the blockage of the print head nozzle caused by it. At the same time, the circulating flow of the ink also avoids the generation of air bubbles due to the long-term static of the ink, thereby improving the inkjet accuracy, reducing the waste rate, saving costs, and ensuring quality and quantity.
  • the air source device also includes an air source filter assembly, the air source filter assembly is connected to an external air source, and the air outlet of the air source filter assembly is respectively connected to the air inlet of the first negative pressure generator 531 and the second negative pressure generator. 532 is connected to the air inlet, and the air outlet of the first negative pressure generator 531 and the air outlet of the second negative pressure generator 532 are respectively connected to different air inlets of the ink cartridge.
  • the connection here refers to the communication between the connected components through the connection. That is, the first negative pressure generator 531 and the second negative pressure generator 532 respectively have an air inlet and an air outlet, the air inlet is used to connect an external air source, and the air outlet is connected to different air inlets of the ink cartridge respectively.
  • Air source filter assemblies are respectively provided between the first negative pressure generator 531 and the second negative pressure generator 532 and the external air source, including the first negative pressure generator 531 and the second negative pressure generator 532 sharing one air source
  • the filter assembly also includes the two correspondingly connected different air source filter assemblies. Through the setting of the air source filter assembly, the air entering the ink cartridge is filtered to meet the requirements of the filter grade and avoid the pollution of the ink caused by the introduction of impurities. As required, the air source filter assembly may not be provided if the air source meets the requirements.
  • the air source filter assembly includes an air source processor 511 and a precision filter 512.
  • the air inlet of the air source processor 511 is connected to an external air source, and the air inlet of the precision filter 512 is connected to the outlet of the air source processor 511.
  • the air port is connected, and the air outlet of the precision filter 512 is connected to the air inlet of the first negative pressure generator 531 and the air inlet of the second negative pressure generator 532 respectively.
  • the connection here refers to the communication between the connected components through the connection. That is, the gas from the external gas source passes through the filtering action of the gas source processor 511 and the precision filter 512 in turn, and passes through multiple stages and multiple filtrations to improve the filtration precision.
  • the air source processor 511 is used to filter water, oil and solid particles in the compressed air
  • the precision filter 512 is used to filter the compressed air filtered by the air source processor 511 with higher precision.
  • the specific structures and working principles of the air source processor 511 and the precision filter 512 can be referred to in the prior art, which are not specifically limited here.
  • the air source device further includes a first pressure reducing valve 521 and a second pressure reducing valve 522, the front of the first negative pressure generator 531 is connected to the first pressure reducing valve 521, and the front of the second negative pressure generator 532 is connected to the first pressure reducing valve 521.
  • Two pressure relief valves 522 It should be noted that the connection here refers to the communication between the connected components through the connection.
  • the air outlet of the precision filter 512 is connected to the inlet of the first pressure reducing valve 521 and the inlet of the second pressure reducing valve 522 respectively, and the outlet of the first pressure reducing valve 521 is respectively connected
  • the air inlet of the first negative pressure generator 531 is connected; the outlet of the second pressure reducing valve 522 is connected to the air inlet of the second negative pressure generator 532 . That is, the filtered gas is stabilized by the corresponding pressure reducing valve and then enters the first negative pressure generator 531 and the second negative pressure generator 532 to ensure stable gas supply for both.
  • the first pressure reducing valve 521 and the second pressure reducing valve 522 please refer to the prior art, which will not be repeated here.
  • the air source device also includes a first negative pressure accumulator 543 and a second negative pressure accumulator 542, the air outlet of the first negative pressure generator 531 is connected to the air inlet of the first negative pressure accumulator 543, the second negative pressure accumulator 543 The air outlet of the negative pressure generator 532 is connected to the air inlet of the second negative pressure accumulator 542, and the air outlet of the first negative pressure accumulator 543 and the air outlet of the second negative pressure accumulator 542 are respectively different from the air inlets of the ink cartridges. connect. It should be noted that the connection here refers to the communication between the connected components through the connection.
  • the negative pressure generated by the first negative pressure generator 531 and the second negative pressure generator 532 first enters the corresponding first negative pressure storage 543 and the second negative pressure storage 542 respectively, and then is stored by the first negative pressure.
  • the accumulator 543 and the second negative pressure accumulator 542 supply air to different air inlets of the ink cartridge.
  • the setting of the first negative pressure storage 543 and the second negative pressure storage 542 ensures stable and sufficient negative pressure.
  • the first negative pressure storage 543 and the second negative pressure storage 542 can be stored in a negative pressure box, etc. device.
  • the first negative pressure accumulator 543 and the second negative pressure accumulator 542 can be integrated into an integral pressure box, and the pressure box has at least two cavities isolated from each other to be respectively connected with the first negative pressure generator 531 connected to the second negative pressure generator 532 .
  • the air inlet of the ink cartridge is also connected to an external air source to provide positive pressure into the ink cartridge as required.
  • the air source device further includes a third pressure reducing valve 523 , the inlet of the third pressure reducing valve 523 is connected to the air outlet of the precision filter 512 , and the outlet of the third pressure reducing valve 523 is connected to the intake air of the positive pressure accumulator 541 .
  • the air outlet of the positive pressure reservoir 541 communicates with the air inlet of the ink cartridge.
  • connection here refers to the communication between the connected components through the connection. That is to say, after the external air source is filtered by the air source filter assembly, it can be filtered by the air source processor 511 and the precision filter 512 in turn, then passed through the third pressure reducing valve 523, and then enters the positive pressure storage after its voltage stabilization effect.
  • the positive pressure reservoir 541 is used to provide a stable positive pressure gas to the air inlet of the ink cartridge. When the print head needs to be cleaned, the gas goes through the above path to clean the print head.
  • the positive pressure accumulator 541 can be integrated with the first negative pressure accumulator 543 and the second negative pressure accumulator 542 as a pressure box, and the pressure case has at least three cavities to be respectively connected with the first negative pressure accumulator 543, the second negative pressure accumulator 543 and the second negative pressure accumulator 542.
  • the two negative pressure accumulators 542 are connected to the external air source.
  • the air source device further includes a first two-position three-way valve 551, a second two-position three-way valve 552 and a three-way joint, wherein the positive pressure is stored.
  • the air outlet of the device 541 is connected to the first air inlet of the first two-position three-way valve 551
  • the air outlet of the second negative pressure accumulator 542 is connected to the second air inlet of the first two-position three-way valve 551
  • the first The air outlet of the two-position three-way valve 551 is connected with the first port of the three-way joint
  • the second port of the three-way joint is connected with the first air inlet of the second two-position three-way valve 552
  • the third port of the three-way joint It is connected to the first air inlet of the ink cartridge
  • the air outlet of the first negative pressure accumulator 543 is connected to the second air inlet of the second two-position three-way valve 552
  • the air outlet of the second two-position three-way valve 552 is connected to the ink cartridge.
  • the connection here refers to the connection between the corresponding connectors.
  • the application also provides a 3D printing head, the 3D printing head includes a mounting frame, an ink supply assembly and an inkjet assembly; the ink supply assembly includes an ink cartridge, and the ink cartridge is arranged on the installation frame; the inkjet assembly includes a nozzle arranged on the installation frame and a driving board, the nozzle is communicated with the ink cartridge, and the driving board is inserted on the nozzle to control the inkjet of the nozzle.
  • the difference from the above-mentioned embodiments is that the communication between the nozzle and the ink cartridge can be directly communicated with the ink cartridge through the nozzle without the diversion effect of the shunt pipe. connected, or each nozzle is directly connected to the ink cartridge through a joint.
  • the driving board is inserted into the spray head. The plug-in method is adopted to facilitate the installation of the drive board and the nozzle, and the maintenance is convenient.
  • the driver board is plugged into the printhead and the signal connection is realized by plugging, the printhead and the driver board do not need to be connected with separate lines, thus reducing the line connection, thereby reducing the occurrence of failure points and saving installation space.
  • the present invention also provides a 3D printer, the 3D printer includes any one of the 3D printing heads in the above embodiments. Since the 3D printer adopts the 3D printing head in the above embodiment, please refer to the above embodiment for the beneficial effects of the 3D printer.
  • a 3D printer includes a 3D printing head, and the 3D printing head includes: a mounting frame, an ink supply assembly, and an inkjet assembly;
  • the mounting frame includes a connecting plate, A three-point adjustment plate and a cover plate, the connecting plate is used to connect the drive module and drive the 3D printing head to move, the three-point adjustment plate is arranged on the connecting plate, and the cover plate is movably installed on the The three-point adjustment plate;
  • the ink supply assembly includes an ink cartridge and a shunt pipe that communicate with each other, the ink cartridge is installed on the three-point adjustment plate, and the shunt pipe is arranged on the cover plate;
  • the inkjet assembly It includes a printing bottom plate, a nozzle and a driving board, the printing bottom is connected with the cover, the nozzle is mounted on the printing bottom and communicates with the shunt pipe, and the driving board is inserted into the On the nozzle, it is used to control the ink jet of the nozzle.
  • the ink cartridge of the printing mechanism is externally placed on the three-point adjustment plate, which effectively avoids the heating of the ink cartridge due to the heating of the drive board, thereby changing the ink temperature, and then causing the ink viscosity change and causing the inkjet quality to decline.
  • the setting makes it possible to rely on natural wind to cool the ink cartridge simply and effectively during the printing process; and the three-point adjustment plate is movably installed on the cover plate, which is conducive to the smooth and efficient adjustment of the height and straightness of the printing mechanism; further, By arranging a shunt pipe on the cover plate, several liquid inlet pipes connected between the ink cartridge and the nozzle are effectively replaced, which greatly simplifies the installation complexity of the printing mechanism and is beneficial to reduce installation and maintenance costs.

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Abstract

一种3D打印头及3D打印机,包括供墨组件(200)和喷墨组件(300);供墨组件(200)包括相互连通的墨盒(210)与分流管(220);喷墨组件(300)包括喷头(320)和驱动板卡(330),喷头(320)与分流管(220)连通,驱动板卡(330)连接于喷头(320)上,用于控制喷头(320)喷墨。另一种3D打印头及3D打印机,包括安装框架(100)、供墨组件(200)和喷墨组件(300);供墨组件(200)包括墨盒(210),墨盒(210)设置于安装框架(100)上;喷墨组件(300)包括设置于安装框架(100)的喷头(320)及驱动板卡(330),喷头(320)与墨盒(210)连通,驱动板卡(330)插接于喷头(320)上,用于控制喷头(320)喷墨。

Description

一种3D打印头及3D打印机
本申请要求于2020年7月27日提交中国专利局、申请号为202010727092.9、发明名称为“3D打印头及3D打印机”的中国专利申请,及于2020年7月27日提交中国专利局、申请号为202021489083.2、发明名称为“3D打印头及3D打印机”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及3D打印技术领域,特别是涉及一种3D打印头及3D打印机。
背景技术
3D打印技术与传统喷墨打印技术类似,其中打印头是打印机最关键的部件之一,打印头直接影响着产品的打印效率、打印质量等。3D打印头的喷头与墨盒连通,以进行喷墨。在3D打印领域,将打印头提供的液料称之为墨。在具有多个喷头的情况下,各喷头与墨盒连通的管路复杂繁多,不利于布局,且容易损坏。另外,驱动喷头移动的驱动板卡与喷头间的连接易在使用过程中松动,进而影响喷头的喷墨效果。
发明内容
有鉴于此,本发明的第一个目的在于提供一种3D打印头,该3D打印头的结构设计可以有效地解决喷头与墨盒连通的独立管路复杂繁多不利于布局的问题,本发明的第二个目的是提供一种包括上述3D打印头的3D打印机。
为了达到上述第一个目的,本发明提供如下技术方案:
一种3D打印头,包括供墨组件和喷墨组件;
所述供墨组件包括相互连通的墨盒与分流管;
所述喷墨组件包括喷头和驱动板卡,所述喷头与所述分流管连通,所 述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
在其中一个实施例中,所述分流管包括若干支管,各所述支管相互连通。
在其中一个实施例中,所述喷头具有若干个,各所述喷头成阵列设置于所述打印底板上,每一列所述喷头与一所述支管对应设置。
在其中一个实施例中,所述盖板上设置有与所述三点调节板的三点位置对应的定位座,所述定位座上安装有微分头,用于调节所述三点调节板的水平直线度。
在其中一个实施例中,所述微分头的一端具有旋钮,另一端为推杆,所述推杆沿水平方向抵接所述三点调节板。
在其中一个实施例中,所述盖板上设置有电源插头与光纤防护盒。
在其中一个实施例中,所述墨盒为非金属材料制成的盒体。
在其中一个实施例中,还包括安装框架,所述安装框架包括相对设置的侧板以及连接两个所述侧板的若干横向筋,所述喷头设置于位于底部的所述横向筋上。
在其中一个实施例中,所述驱动板卡固定连接于位于中部的所述横向筋上。
在其中一个实施例中,相对设置的所述侧板上均开设有导轨槽,所述导轨槽内滑动安装有隔板,所述隔板用于承托所述墨盒,与所述隔板配合设置有用于将所述隔板与所述侧板锁紧或解锁的固定部件。
在其中一个实施例中,位于中部位置的所述横向筋开设有若干通孔,所述通孔用于连接压缩空气冷却所述驱动板卡。
在其中一个实施例中,所述墨盒的进墨口安装有消泡器。
在其中一个实施例中,所述墨盒的外缘设置有脱气腔。
在其中一个实施例中,所述供墨组件还包括液料箱、供液泵以及供液过滤器,所述供液泵和所述供液过滤器连通设置于所述液料箱与所述供墨腔之间。
在其中一个实施例中,所述供液过滤器包括连接于所述供液泵的出口 的一级过滤器和连接于所述一级过滤器出口的二级过滤器。
在其中一个实施例中,所述供墨组件还包括设置于所述一级过滤器的出口的脱气膜,所述脱气膜用于将所述墨水中气体脱离。
在其中一个实施例中,所述供墨组件还包括负压盒,所述墨盒具有供墨腔和回墨腔,所述负压盒具有供墨负压腔和回墨负压腔,所述供墨腔与所述供墨负压腔连通,所述回墨腔与所述回墨负压腔连通;
所述喷头与所述墨盒的供墨腔和回墨腔均连通。
在其中一个实施例中,所述供墨腔内设有若干分割板,形成若干子供墨腔。
在其中一个实施例中,所述供墨组件还包括依次连接的回液泵、液料回收桶以及回液过滤器,所述回液泵与所述回墨腔连通,所述回液过滤器连通所述液料箱。
在其中一个实施例中,还包括清洗组件,所述清洗组件包括清洗池与擦洗件,所述清洗池用于放置清洗液,所述擦洗件活动安装于所述清洗池上,用于擦洗所述喷头。
在其中一个实施例中,所述擦洗件包括辊轮与辊轮驱动件,所述辊轮转动安装于所述清洗池内,且所述辊轮的外缘设置有海绵层,所述辊轮驱动件驱动连接所述辊轮。
在其中一个实施例中,所述擦洗件还包括顶升件与托架,所述顶升件设置于所述清洗池的底部,所述托架固定连接于所述顶升件的输出端,所述辊轮与所述托架转动连接。
在其中一个实施例中,所述清洗池的内壁上安装有用于清理所述海绵层的清理刷。
在其中一个实施例中,所述清洗池的内壁上还设置有用于挤压所述海绵层的刮刀。
在其中一个实施例中,还包括气源装置,所述墨盒具有至少两个进气口;所述气源装置包括第一负压发生器和第二负压发生器,所述第一负压发生器的出气口和所述第二负压发生器的出气口分别与所述墨盒的至少两个所述进气口连接,用以向所述墨盒内通入不同压力的负压。
在其中一个实施例中,所述气源装置还包括气源过滤组件,所述气源过滤组件与外部气源连接,所述气源过滤组件的出气口分别与所述第一负压发生器和所述第二负压发生器的进气口连接。
在其中一个实施例中,所述气源过滤组件包括气源处理器和精密过滤器,所述气源处理器的进气口连接外部气源,所述精密过滤器的进气口与所述气源处理器的出气口连接,所述精密过滤器的出气口分别与所述第一负压发生器的进气口和所述第二负压发生器的进气口连接。
在其中一个实施例中,所述气源装置还包括第一减压阀和第二减压阀,所述精密过滤器的出气口分别连接所述第一减压阀的入口和所述第二减压阀的入口,所述第一减压阀的出口连接所述第一负压发生器的进气口,所述第二减压阀的出口连接所述第二负压发生器的进气口。
在其中一个实施例中,所述气源装置还包括第一负压储存器和第二负压储存器,所述第一负压储存器的进气口连接所述第一负压发生器的出气口,所述第二负压储存器的进气口连接所述第二负压发生器的出气口,所述第一负压储存器的出气口和所述第二负压储存器的出气口分别与所述墨盒的不同进气口连接。
在其中一个实施例中,所述气源装置还包括第三减压阀和正压储存器,所述第三减压阀的入口与所述精密过滤器的出气口连接,所述第三减压阀的出口连接所述正压储存器的进气口,所述正压储存器的出气口与所述墨盒的进气口连接。
在其中一个实施例中,所述气源装置还包括第一两位三通阀、第二两位三通阀和三通接头,所述正压储存器的出气口与所述第一两位三通阀的第一进气口连接,所述第二负压储存器的出气口与所述第一两位三通阀的第二进气口连接,所述第一两位三通阀的出气口与所述三通接头的第一接口连接,所述三通接头的第二接口与所述第二两位三通阀的第一进气口连接,所述三通接头的第三接口与所述墨盒的第一进气口连接,所述第一负压储存器的出气口与所述第二两位三通阀的第二进气口连接,所述第二两位三通阀的出气口与所述墨盒的第二进气口连接。
应用本发明提供的3D打印头,供墨组件的墨盒通过分流管与喷墨组 件的喷头连通,喷头在驱动板卡的控制下进行喷墨。由于墨盒通过分流管与喷头连通,故在具有多个喷头的情况下,分流管能够实现墨盒至多个喷头的分流,因而无需设置多个独立的管路,简化了结构,便于整体布局。同时,通过分流管连通墨盒与多个喷头,分流管内部均连通,不易发生堵塞,提高了喷头工作的稳定性,且各喷头的流量更为均匀。且喷头与驱动板卡采用插接的方式连接,能够减少线路连接,进而减少故障点发生,且节约安装空间,维护方便。
在其中一个实施例中,本发明提供了一种喷墨效果良好、便于调整高度与直线度,且安装维护成本较低的3D打印头及3D打印机,所述的3D打印头包括:安装框架、供墨组件以及喷墨组件;所述安装框架包括连接板、三点调节板以及盖板,所述连接板用于连接驱动模组并带动所述3D打印头运动,所述三点调节板设置于所述连接板上,所述盖板活动安装于所述三点调节板上;所述供墨组件包括相互连通的墨盒与分流管,所述墨盒安装于所述三点调节板上,所述分流管设置于所述盖板上;所述喷墨组件包括打印底板、喷头以及驱动板卡,所述打印底板与所述盖板连接,所述喷头安装于所述打印底板上,且与所述分流管连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
墨盒通过外置于三点调节板上,有效避免由于驱动板卡发热而加热墨盒,从而改变墨水温度,继而引发墨水粘度变化造成喷墨质量下降问题;同时墨盒外置使得在打印过程中可依靠自然风对墨盒进行简单有效的降温;并且采用三点调节板活动安装于盖板上,有利于实现平稳、高效地调节高度与直线度;进一步地,通过在盖板上设置分流管,从而有效代替墨盒与喷头之间连接的若干进液管,极大简化了安装复杂度,有利于降低安装及维护成本。
本发明还提供如下技术方案:
一种3D打印头,所述的3D打印头包括安装框架、供墨组件和喷墨组件;
所述供墨组件包括墨盒,所述墨盒设置于所述安装框架上;
所述喷墨组件包括设置于所述安装框架的喷头及驱动板卡,所述喷头与所述墨盒连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
应用该3D打印头,喷头与驱动板卡采用插接的方式连接,能够减少线路连接,进而减少故障点发生,且节约安装空间,维护方便。
为了达到上述第二个目的,本发明还提供了一种3D打印机,该3D打印机包括上述任一种3D打印头。由于上述的3D打印头具有上述技术效果,具有该3D打印头的3D打印机也应具有相应的技术效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为一实施例的3D打印头的立体结构示意图;
图2为图1所示的3D打印头的另一视角的立体结构示意;
图3为一实施例的3D打印头的部分结构示意图;
图4为另一实施例的3D打印头的立体结构示意图;
图5为另一实施例的3D打印头的局部立体结构示意图;
图6为清洗组件的一种结构示意图;
图7为气源装置的结构示意图;
图8为供墨组件的一种结构示意图;
图9为供墨组件和喷墨组件的一种安装结构示意图;
图10为墨盒示意图;
图11为墨盒剖视示意图;
图12为负压盒示意图;
图13为供墨组件的液料循环示意图。
附图中标记如下:
安装框架100,连接板110,三点调节板120,盖板130,定位座131,微分头132,电源插头140,光纤防护盒150,侧板160;底部筋条161,中部筋条162,顶部筋条163,隔板164,导轨槽165;平行度调节块172,垂直度调节块173,微距离传感器174,调节板175;
供墨组件200,墨盒210,分流管220,密封堵头230;供墨腔211,回墨腔212,分割板213,供液接头214;负压盒240,供墨负压腔241,回墨负压腔242,供墨管243,回墨管244,直角穿板接头245,直角宝塔接头246,回液泵251,液料回收桶252,回液过滤器253;出液接头221;
喷墨组件300,打印底板310、喷头320,驱动板卡330,固定筋340;
清洗池411,辊轮412,海绵层413,刮刀414,清理刷415,顶升件416,液位传感器417,托架418;
气源处理器511,精密过滤器512,第一减压阀521,第二减压阀522,第三减压阀523,第一负压发生器531,第二负压发生器532,正压储存器541,第二负压储存器542,第一负压储存器543,第一两位三通阀551,第二两位三通阀552;
液料箱610,供液过滤器620,一级过滤器621,二级过滤器622,供液泵630,液料管640,消泡器650,负压管660,液位传感器670,进墨口611,排气装置612。
具体实施方式
为了便于理解本发明,下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是,本发明可以以许多不同的形式来实现,并不限于本文所描述的实施方式。相反地,提供这些实施 方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是,当元件被称为“设置于”另一个元件,它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件,它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”、“顶部”、“底部”、“底端”、“顶端”以及类似的表述只是为了说明的目的,并不表示是唯一的实施方式。
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
在一个实施例中,本发明提供的3D打印头包括供墨组件和喷墨组件。
其中,供墨组件包括相互连通的墨盒与分流管。分流管与墨盒连通,以进行输墨。
喷墨组件包括喷头和驱动板卡,喷头与分流管连通,驱动板卡连接于喷头上,用于控制喷头喷墨。驱动板卡与喷头连接,用于控制喷头喷墨,其具体结构及工作原理请参考现有驱动板卡相应设置,此处不再赘述。优选的,驱动板卡插接于喷头上。采用插接的方式,便于驱动板卡与喷头的安装,维护方便。具体的,驱动板卡插接于喷头上且通过插接实现信号连接,则喷头与驱动板卡无需再单独设置线路连接,故减少了线路连接,进而减少故障点发生,且节约安装空间。
喷头与分流管连通,也就是墨盒通过分流管与喷头连通,分流管的设置,能够实现墨盒与多个喷头间的连通,且各喷头之间由于分流管的设置也实现连通。
为了便于供墨组件和喷墨组件的安装,具体可设置安装框架,安装框架的具体结构可根据需要设置,此处不做具体限定,以能安装供墨组件和 喷墨组件即可。根据实际需要,墨盒可以安装于安装框架的内部,也可以安装于安装框架的外侧。
应用本发明提供的3D打印头,供墨组件的墨盒通过分流管与喷墨组件的喷头连通,喷头在驱动板卡的控制下进行喷墨。由于墨盒通过分流管与喷头连通,故在具有多个喷头的情况下,分流管能够实现墨盒至多个喷头的分流,因而无需设置多个独立的管路,简化了结构,便于整体布局。同时,通过分流管连通墨盒与多个喷头,分流管内部均连通,不易发生堵塞,提高了喷头工作的稳定性,且各喷头的流量更为均匀。
另外,目前3D打印机的打印机构,存在多种问题及风险。首先,由于3D打印使用的是压电式喷头,喷头喷射墨水效果问题直接影响到打印质量,而影响喷墨效果的重要因素之一便是墨水粘度,墨水粘度受温度影响较大,打印过程中驱动板卡放热,墨盒或墨管在打印机构内部,墨水温度被改变,最高时可达到40℃,造成喷头喷墨效果差甚至打印报废;其次,墨管及墨盒安装、维护十分不便,造成安装维护成本高;另外,打印机构目前的定位调节打印机构的高度以及直线度,调节点位多,调整螺栓数量多,螺栓调整分度比较粗略,不够精细化,给设备安装打印机构精度调整带来很多不便,并且增加了调节难度。
基于上述技术问题,在另一实施方式中,一种3D打印头,所述的3D打印头包括:安装框架、供墨组件以及喷墨组件;所述安装框架包括连接板、三点调节板以及盖板,所述连接板用于连接驱动模组并带动所述3D打印头运动,所述三点调节板设置于所述连接板上,所述盖板活动安装于所述三点调节板上;所述供墨组件包括相互连通的墨盒与分流管,所述墨盒安装于所述三点调节板上,所述分流管设置于所述盖板上;所述喷墨组件包括打印底板、喷头以及驱动板卡,所述打印底板与所述盖板连接,所述喷头安装于所述打印底板上,且与所述分流管连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。该实施例中对供墨组件和喷墨组件在安装框架上的安装位置进行了限定。
上述3D打印头,打印机构的墨盒通过外置于三点调节板上,有效避免由于驱动板卡发热而加热墨盒,从而改变墨水温度,继而引发墨水粘度变化造成喷墨质量下降问题;同时墨盒外置使得在打印过程中可依靠自然风对墨盒进行简单有效的降温;并且采用三点调节板活动安装于盖板上,有利于实现平稳、高效地调节打印机构的高度与直线度;进一步地,通过在盖板上设置分流管,从而有效代替墨盒与喷头之间连接的若干进液管,极大简化了打印机构的安装复杂度,有利于降低安装及维护成本。
下面结合具体实施例对所述3D打印头进行说明,以进一步理解所述3D打印头的发明构思。请参阅图1,一种3D打印头,所述的3D打印头包括:安装框架100、供墨组件200以及喷墨组件300;其中,供墨组件200与喷墨组件300均设置于安装框架100上,供墨组件200向喷墨组件300提供打印液料,喷墨组件300向打印工作面喷射墨水实现打印。
具体地,所述安装框架100包括连接板110、三点调节板120以及盖板130,所述连接板110用于连接驱动模组并带动所述3D打印头运动,所述三点调节板120设置于所述连接板110上,所述盖板130活动安装于所述三点调节板120上。在其中一实施例中,连接板110与三点调节板120一体式连接。在又一实施例中,连接板110与三点调节板120相互螺接。即,连接板110与三点调节板120之间的固定连接方式包括一体式或可拆卸连接等多种方式,本实施例对此不做具体限制。在其中一实施例中,连接板110包括相互垂直设置的连接部与安装部,连接部的底端连接三点调节板120,安装部与3D打印头的驱动模组连接。这样,通过设置连接板110可实现承载于三点调节板120上的供墨组件200与喷墨组件300能够同步随驱动模组运动进行打印。在其中一实施例中,盖板130为矩形平板,三点调节板120为三角形平板。需要说明的是,三点调节板120的横截面积小于盖板130的横截面积,这样以利于盖板130承载三点调节板120及其他部件。
为了实现灵活调整打印底板与打印工作面之间的垂直距离和水平度, 需要根据工况随时调整三点调节板120与盖板130之间的安装距离和安装角度,继而实现调整与盖板连接的打印底板与打印工作面之间的距离与角度。因此需要强调的是,盖板130与三点调节板120之间采用活动连接方式安装。在其中一实施例中,所述三点调节板120与所述盖板130之间通过螺栓调节安装距离。也就是说,三点调节板120与盖板130采用可调节距离的螺栓连接。在其中一实施例中,所述安装距离的调整范围为3mm~3.5mm。优选地,所述安装距离为3.2mm。具体地,三点调节板120的下端面的三角位置处分别开设螺纹间隙孔,这样通过螺栓与盖板130对应三点位置的螺纹孔实现螺栓连接,从而实现与盖板连接的打印底板与打印工作面之间的距离可调。且根据实际经验及试验结果,通常对应控制该调整距离在3mm~3.5mm之间时喷墨效果最佳。
请一并参阅图2,为了在实现更加精准地调整打印底板与打印工作面之间的水平直线度,在其中一实施例中,所述盖板130上设置有与所述三点调节板120的三点位置对应的定位座131,所述定位座131上安装有微分头132,用于调节所述三点调节板120的水平直线度。即,三点调节板120的三点位置处可以都对应设置一定位座131,每一定位座131上对应地安装一微分头132;也可以是其中两点位置处对应设置一定位座131,每一定位座131上对应地安装一微分头132。优选地,在三点调节板120的短边的两点位置处分别设置定位座131与微分头132,三点调节板120的另一点位置固定设置于盖板上。也就是说,将另一点设置成固定旋转点,另外两点采用对应的微分头132配合定位座131抵接三点调节板120,这样当三点调节板120两侧的微分头132旋转长度一致时,且将三点调节板120紧固抵接,则整个3D打印头自动校准,形成稳定的三角形结构。这样,相比于以往的4点调节或更多调节点的调节方式而言具有以下优点:首先,减少调节点,减少操作点,有助于降低调试人员劳动力;其次,优化精度调节原理,三点调节形成三角形稳定结构,牢靠、稳固;最重要的是,三点调节能够自动校准,快速定位,极大的降低了直线度调节难度,降低人 员水平要求、减少工时、降低人力成本。
进一步地,所述微分头132的一端具有旋钮,另一端为推杆,所述推杆沿水平方向抵接所述三点调节板120。具体地,微分头132具有外螺纹,其对应旋入定位座131的内螺纹,形成固定配合结构;微分头132的一端设置的旋钮,通过旋动旋钮可调整微分头从而配合定位座的给进量,微分头132的另一端设置推杆可进行有分度的伸缩,在调节整个打印机构的水平直线度时,推杆的端面与三点调节板120的对应端面接触,形成推抵效果。这样,对于传统依靠顶丝进行螺纹节距旋入或旋出的调整方式而言,其由于自身螺纹精度存在不够精细化问题,所以实际调节过程中,往往出现旋动时容易调多或调少,导致很难找到平衡点,本实施例中的打印机构通过采用微分头代替顶丝调节,可以实现近乎0.01mm精准调节,极大地改善了直线度的调节精度,以及操作的精细化,将高精密调节变成可能。
请一并参阅图3,所述供墨组件200包括相互连通的墨盒210与分流管220,所述墨盒210安装于所述三点调节板120上,所述分流管220设置于所述盖板130上。这样,通过将墨盒210安装于三点调节板120上,实现墨盒210外置效果,从而可避免墨盒设置于打印机构内部时由于驱动板卡发热而加热墨盒,从而改变墨水的温度,继而引发墨水粘度变化影响喷墨质量。在其中一实施例中,盖板130上开设分流槽,分流管形成于分流槽中。也就是通过在盖板130内部设置槽结构形成上述的分流管,无需单独设置分流管,进一步节约了空间。在其中一实施例中,墨盒上设置有温度传感器,用于实时检测墨盒内的墨水温度。这样,可便于操作人员及时监控墨盒温度做出相应的操作调整。在其中一实施例中,所述墨盒为非金属材料制成的盒体。优选地,所述墨盒210为塑料盒体。这样,通过将墨盒设置成非金属材质使得其导热能力上降低,这样墨盒对外界温度敏感度降低,从而保障墨盒内墨水温度保持在相对稳定的使用状态。在一具体实施例中,墨盒210上设置有负压接头与负压传感器,负压接头与气源系统连接,负压传感器检测墨盒210的负压值。这样,通过实时检测墨盒内 压力,有利于保证与墨盒连接的喷头在停止打印时提墨。在一具体实施例中,墨盒210上还设置有进液接头、供液接头以及液位传感器,进液接头外接墨水系统,供液接头与喷头连接,液位传感器用于检测墨盒的液位,以保证实时检测并及时供墨。在其中一实施例中,所述分流管220包括若干支管,各所述支管相互连通。具体地,相邻支管之间通过连接管可拆卸连通,以实现分流管的各个支管保持均衡供液。进一步地,请一并参阅图4,各支管的端部设置有密封堵头230。这样,当需要调整供液时,可以将支管端部的连接管拆卸后安装密封堵头230。相较于现有技术中在墨盒与喷头之间插接若干连接管而言,通过设置分流管极大降低设备的安装和维护成本。
请再次参阅图1及图2,具体地,所述喷墨组件300包括打印底板310、喷头320以及驱动板卡330,所述打印底板310与所述盖板130连接,所述喷头320安装于所述打印底板310上,且与所述分流管220连通,所述驱动板卡330插接于所述喷头320上,用于控制所述喷头喷墨。其中,打印底板310上开设若干喷嘴,即多个喷嘴对应一喷头。驱动板卡330则是用于检测提取喷嘴喷射数据的电气元器件,具体型号及数据传输原理可参见现有技术中相关打印机构控制系统方面的技术文献,在本实施例中不做具体详述。其中,打印底板310通过与盖板130连接,从而实现将承载有喷头320以及驱动板卡330的打印底板310安装于盖板上。
请一并参阅图4,在其中一实施例中,所述盖板130上设置有电源插头140与光纤防护盒150。光纤防护盒150与电源插头140用于连接驱动板卡330。具体驱动板卡330的打印服务器与驱动板卡330通过光纤防护盒150实现光纤通讯连接,从而代替网线,有效提升信号传递效率,减少线路连接,有利于进一步降低信号中断故障概率。这样,电源插头和光纤防护盒通过安装在盖板130上,盖板130与三点调节板120始终不分离,这样拆卸时,只需要将系统断电,直接拆卸盖板130以下部分,线缆仍然保持插接在盖板130上的对应插口上,对于后续再次安装则可避免重复精 度调节流程,同时又能充分减少人员的操作难度与工作量。
在其中一实施例中,盖板130的两侧安装有侧板160,打印底板310安装于两个侧板之间。这样,盖板、两个侧板以及打印底板之间形成安装框架结构,喷头和驱动板卡集成于该安装框架内。进一步地,驱动板卡330通过插接于喷头320上有效减小了打印机构整体结构,且采用插接方式更加有利于稳地进行数据传输。其中,喷头320与分流管220之间通过连接管连接,具体地,喷头的两端分别设置有接头,对应地分流管上开设有出液接头,出液接头与接头之间通过连接管连接。在其中一实施例中,所述喷头320具有若干个,各所述喷头320成阵列设置于所述打印底板310上,每一列所述喷头320与一所述支管对应设置。在本实施例中,四个喷头两两并列设置,对应地在盖板上设置两个支管,每一个支管对应一列喷头,每列喷头具有四个接头,则对应在该支管上设置四个出液接头。这样,通过设置具有多个支管的分流管,且使得每一支管与打印底板上的一列喷头对应设置,从而有利于减少支管设置,提高供墨效率。
为了避免在打印中驱动板卡产生晃动而出现数据丢失的问题,在其中一实施例中,所述盖板130的两端连接有固定筋340,所述固定筋340绝缘连接所述驱动板卡330,用于限制所述驱动板卡330位移。进一步地,所述固定筋340与所述驱动板卡330对应开设有螺纹孔,对应设置的所述螺纹孔之间贯穿有绝缘螺栓。即,固定筋340开设有螺纹孔,驱动板卡330对应开设有螺纹孔,两部件之间的螺纹孔之间贯穿有绝缘螺栓。也就是说,驱动板卡330通过绝缘螺栓与安装在盖板上的固定筋340连接,从而有利于降低驱动板卡330在打印过程中的晃动幅度,防止出现丢失数据、损坏针脚等问题。在其中一实施例中,固定筋340采用特氟龙表面处理。即,在保证绝缘的前提下,利用固定筋辅助支撑喷头的驱动板卡,保证驱动板卡在随打印机构运动过程中不会产生大幅度晃动,防止出现丢失数据、损坏针脚等问题。
上述3D打印头,通过将墨盒安装于三点调节板上,实现墨盒外置效 果,有效避免由于驱动板卡发热而加热墨盒,从而改变墨水温度,继而引发墨水粘度变化造成喷墨质量下降问题;同时墨盒外置使得在打印过程中可依靠自然风对墨盒进行简单有效的降温;并且采用三点调节板活动安装于盖板上,有利于实现平稳、高效地调节打印机构的高度与直线度;进一步地,通过在盖板上设置分流管,从而有效代替墨盒与喷头之间连接的若干进液管,极大简化了打印机构的安装复杂度,有利于降低安装及维护成本。
在另一实施方式中,打印底板上设置有若干喷头,各喷头上开设有多个喷嘴,驱动板卡根据打印图像的数据电信号控制各喷嘴喷墨。需要说明的是,此处的多个喷头指两个及两个以上。每一喷头与驱动板卡连接,每一块驱动板卡通过通讯电缆连接,每一喷嘴由驱动板卡控制驱动其喷墨。具体喷头的数量可以是1个或多个,当只设置1个喷头时,该喷头对应设置1个驱动板卡,当设置多个喷头时,则既可以将每个喷头分别对应一个驱动板卡。也可以将多个喷头集成为若干模组,每一模组对应连接一驱动板卡。也就是N个喷头集成为一个模组,各模组分别对应一个驱动板卡设置,其中,N为大于等于2的正整数。先将N个喷头集成为模组,再将模组安装于打印底板上。优选地,可以设置三个喷头形成一个模组,每个模组对应一个驱动板卡。通过将喷头模块化安装,有利于喷头安装精度的控制和打印头底板加工精度的保证。
以上实施例中的安装框架包括连接板、三点调节板以及盖板,本申请还提供了一种与之不同的安装框架结构。具体的,请参阅图5,在该实施例中,安装框架100包括安装板、调节板175和支撑架,安装板用于连接驱动模组,支撑架与调节板175连接,用于安装供墨组件和喷墨组件。支撑架为主体框架结构,用于安装供墨组件及喷墨组件。安装板连接于支撑架上,具体可以连接于支撑架的顶端,以连接驱动模组,驱动模组控制驱动打印头整体结构的运动。具体喷墨组件包括与安装框架100连接的打印底板310,打印底板310用于安装喷头。调节板175具体包括矩形板,根 据需要还可以包括与矩形板配合的其他结构,主要用于调整打印底板310距离打印工作面的水平直线度。具体的,在调节板175的两侧安装有平行度调节块172和垂直度调节块173,平行度调节块172安装在调节板175的两侧,当打印头整体安装与打印头步进方向模组不平行时,可以张紧或者松动两侧的平行度调节块172,使打印头与步进方向模组平行;当打印底板310与砂面不平行,即打印头与砂面不垂直时,可以调节安装在调节板175上的垂直度调节块173进行调节垂直度。
在一实施例中,墨盒210具有多个,每一墨盒210的供墨管一端连接墨盒210的供液接头214,另一端连接分流管220的进液接头,分流管220具有若干出液接头221,分流管220的每两个出液接头221对应分别与一个喷头的两个供墨接头连接。例如,在安装框架100的左右两端各安装一个墨盒210,分流管220具有一个进液接头和若干出液接头221,分流管220的进液接头与墨盒210的供液接头214连接,分流管220的每两个出液接头221对应一个喷头的两个供墨接头,以为对应的喷头供墨。
墨盒210安装在安装框架100外时,则通过供墨管和分流管220将墨水输送至安装框架100内的各喷头的墨腔。根据需要,墨盒210也可以安装于安装框架100内,如墨盒210安装于安装框架100内,且靠近喷头设置。墨盒210具体可以安装于喷头的上方,则墨水能够垂直的进入喷头的墨腔。具体多个喷头共用一个墨盒210,以利于喷头的墨水供应和墨盒210内负压的稳定。
具体的,分流管220包括主管和与主管连接的若干平行设置的支管,主管设置有进液接头,各支管上分别设置有两个出液接头221,各支管与安装框架100连接,且位于打印底板310上方并与打印底板310平行。墨盒210的液料经过主管再经各支管的分流作用进入对应的喷头,且各支管均平行于打印底板310,以对打印底板310上的喷头供墨。具体的,各支管的两端分别固定连接有连接支架,连接支架与安装框架100固定连接,如螺钉连接。连接支架具体可以为L形板,L形板的一边与支管固定连接,另一边与安装框架100固定连接。
在一个实施例中,安装框架100包括保护罩,保护罩围绕喷墨组件设 置。保护罩围绕喷墨组件设置,也就是在喷墨组件的四周均具有保护结构,通过保护罩对喷墨组件起到防护作用。具体保护罩的结构可根据需要设置,此处不做具体限定。当墨盒210安装于安装框架100内时,即容置于保护罩内,墨盒210靠近喷头设置减少输液管线长度,有利于高效喷墨;当墨盒210安装于安装框架100外部时,即墨盒210位于保护罩外部设置安装,具体可将墨盒210设置于调节板175上,这样的外置设置方式有利于墨盒210散热,更加有利于保证供墨质量。需要说明的是,3D打印头根据需要选适用的3D打印机型号选择适用上述两种结构的3D打印头。
安装框架并不局限于上述各实施例的结构,在另一个实施例中,请参阅图9,安装框架包括相对设置的侧板以及连接两个侧板的若干横向筋,喷头320设置于位于底部的横向筋上。也就是通过相对的两侧板与若干横向筋组成喷墨框架,横向筋的数量具体可根据需要设置,如图9所示为设置三层横向筋,各横向筋优选采用空心方管。需要说明的是,喷头320安装于底部的横向筋上,指喷头320设置在靠近底端的横向筋上,在设置有多层横向筋的情况下,如喷头320设置在从上至下倒数第1-2层横向筋上。优选的,喷头320设置于最底端的横向筋上,也就是喷头320位于喷墨组件的最下端,如此设置喷头320喷墨不受下方横向筋的阻挡或干涉。在图9所示设置三层横向筋的情况下,其包括底部筋条161、中部筋条162和顶部筋条163,喷头320优选安装于底部筋条161上。
具体的,具有多个喷头320,且多个喷头320沿横向筋呈阵列式排布,具体可以在底部的横向筋上呈两列矩阵式分布。如沿底部筋条161成矩阵排布,就本实施例而言,喷头320设置有两排、每排设置有4组喷头320,也即共设置有八组喷头320,八组喷头320在底部筋条161上分两排对称排布。喷头320的排布可根据喷墨框架的长度和宽度进行拓展或者延伸,使喷头320布满喷墨框架的底部筋条161所围成的空间。根据喷头320的数量,可以以若干个喷头320为一组,设置若干组。
进一步地,驱动板卡330设置在喷头320上,或者说驱动板卡330直接坐落在喷头320上,用于驱动所述喷头320作业。在具有多个喷头320的情况下,则若干个喷头320为一组,设置若干组。每组喷头320设置有一个驱动板卡 330,驱动板卡330为喷头320提供喷射的动力。为了防止驱动板卡330在喷墨组件运行过程中发生偏移,导致喷头320不能正常工作,将驱动板卡330固定连接于中部的横向筋条上。在横向筋条包括上述的底部筋条161、中部筋条162和顶部筋条163的情况下,则优选将驱动板卡330的一角固定在中部筋条162上。
更进一步地,相对设置的侧板上均开设有导轨槽165,导轨槽165内滑动安装有隔板164,隔板164用于承托墨盒210,与隔板164配合的设置有用于将隔板164与侧板锁紧或解锁的固定部件。将墨盒210设置于供墨框架的中部,由隔板164承托。也就是在正常使用时,通过固定部件将隔板164锁止于导轨槽165内,以防止隔板164在喷墨组件运行过程中从导轨槽165中滑出。而当需要维护或保养时,固定部件解锁,则隔板164可由导轨槽165中拉出。具体在驱动板卡330的上方设置有隔板164,隔板164通过设置在侧板上的导轨槽165卡接在喷墨组件的中部,且隔板164能够沿导轨槽165滑动。隔板164为墨盒210提供支撑,也即墨盒210放置在隔板164上。固定部件具体可以为在导轨槽165与侧板的边缘处设置的锁紧螺丝,锁紧螺丝将隔板164和墨盒210锁紧、定位。当所述墨盒210需要维护或者保养时,只需要拉出隔板164即可,解决了以前需要将墨盒210从安装框架上拆下才可以维护和修理的问题。
作为本实施例的另一种改进,位于中部位置的横向筋开设有若干通孔,通孔用于连接压缩空气冷却驱动板卡330。在横向筋包括底部筋条161、中部筋条162和顶部筋条163的情况下,则在中部筋条162面向驱动板卡330的面上设有若干通孔,借助外部压缩冷空气源,向中部筋条162内通入压缩冷空气,压缩冷空气通过设置在中部筋条162上的通孔吹向驱动板卡330,从而为驱动板卡330提供了除自带的散热器的风冷方式,加速了驱动板卡330的冷却,避免了由于驱动板卡330发热导致的喷头320内液料温度的变化,由于风冷方式将驱动板卡330产生的热量全部带出,就避免或者说大幅降低了由于液料温度的变化导致的液料对喷头320的腐蚀,缓解了喷头320被液料腐蚀的速率,变相的提升了喷头320的使用寿命。
在上述各实施例中,具体的,墨盒210的进墨口安装有消泡器650, 如图8所示。通过消泡器650的设置,防止气泡进入墨盒210。消泡器650具体可以为利用离心力来破碎泡沫,分离气液的设备。
根据需要,墨盒210的外缘设置有脱气腔。脱气腔的设置有利于墨盒210中墨水的二次脱气,从而保证加入喷头320中的墨水含气量低,不会堵塞喷嘴。也就是通过在墨盒210的外缘设置腔体结构,腔体内可通过壁面的走向等形成气液分离结构,以对墨水进行进一步脱气处理。脱气腔的具体可参考现有技术。
在上述各实施例的基础上,为了更好的向墨盒210供液,请参阅图8,供墨组件还包括液料箱610、供液泵630以及供液过滤器,供液泵630和供液过滤器连通设置于液料箱610和墨盒210之间。具体各部件间的连接可通过液料管640,在布局允许的情况下,相邻的部件之间也可以通过接头直接连接。供液泵630安装于液料箱610的后端,通过供液泵630将墨水抽出,进入供液过滤器进行过滤,过滤后的墨水再进行墨盒210。供液泵630和供液过滤器连接于液料箱610和墨盒210之间,具体供液泵630和供液过滤器的前后位置可根据需要设置。图8所示为液料箱610和墨盒210之间依次连接供液泵630和供液过滤器,根据需要也可以将供液泵630和供液过滤器的位置互换。
进一步地,供液过滤器包括连接于供液泵630的出口的一级过滤器621和连接于一级过滤器621的出口的二级过滤器622。需要说明的是,此处的连接指通过连接使相连接的部件间连通。也就是墨水经一级过滤器621的过滤后再经由二级过滤器622的过滤作用,进入墨盒210。通过多级过滤,保证了对墨水的过滤精度,以提升打印效果。当然,一级过滤器621的过滤等级应不大于二级过滤器622的过滤等级。具体一级过滤器621和二级过滤器622的结构及工作原理可参考现有技术中常规过滤器的结构,此处不做具体限定。
更进一步地,供墨组件还包括设置于一级过滤器621的出口的脱气膜,脱气膜用于将墨水中的气体脱离。通过脱气膜的设置,有利于墨水中空气的脱离。脱气膜是利用扩散的原理将液体中的气体,如二氧化碳、氧气、氨氮等去除的膜分离产品。其具体结构及工作原理请参考现有技术,此处 不再赘述。
具体的,液料箱610内设置有液位传感器670。液位传感器670具体可以设置于液料箱610的内侧壁上,以检测液料箱610内的液位,方便相关人员及时了解液料箱610内液位情况,或通过设置控制模块实现液料箱610内液位的监测。进一步地,液料箱610的顶部设置有排气装置612,以方便液料箱610的排气。具体排气装置612的结构可参考现有技术。
墨盒210的进气口具体设置于墨盒210的顶部。
在上述各实施例的基础上,请参阅图9-11,为避免静止的液料阻塞喷头320,供墨组件还包括与墨盒210相连的负压盒240,墨盒210具有供墨腔211和回墨腔212,负压盒240具有供墨负压腔241和回墨负压腔242,供墨腔211与供墨负压腔241连通,回墨腔212与回墨负压腔242连通。供墨腔211用于给喷头320提供液料,回墨腔212用于收集来自于喷头320的液料。供墨负压腔241为供墨腔211提供负压,以使喷头320做喷射动作以喷墨;回墨负压腔242则为回墨腔212提供负压,以实现喷头320部分液料的回流。液料在自重的作用下自供墨腔211流入喷头320,在供墨负压腔241的作用下喷头320做喷射动作,也即喷头320进行打印作业;与此同时,部分液料在回墨负压腔242的作用下由喷头320回流至回墨腔212中,从而实现各个喷头320中液料的循环,改善了静止液料易阻塞喷头320的问题。
通过上述结构,实现了喷头320内液料的不间断循环流动。从另一个角度讲,液料在喷头320中被分流为两部分,一部分用于喷射、一部分回流,从而实现了喷头320内液料的循环流动,防止了静止的液料造成的液料在喷头320内阻滞。且通过在喷头320内设置两股独立的负压,实现了喷头320内液料的喷射与循环相对独立,从而在不影响喷头320正常工作的情况下,实现了液料的循环,避免了静止的液料易阻塞喷头320的问题。
上述结构的供墨组件,主要适用于3D打印机,尤其适用于砂型3D打印机,其采用的是打印头与铺粉装置相互配合来形成具有一定形状的产品,本技术方案解决了现有打印头采用隔膜泵供墨方式带来的喷射不流畅、波动大的问题,同时也实现了喷头320内液料的微循环。
具体的,喷头320处于喷墨组件的最下端,以实现可以将液料喷射在工 作面上的目的。驱动板卡330具体直接置于喷头320上,用于驱动喷头320按照设定喷射。墨盒210置于驱动板卡330上方,喷头320与墨盒210的供墨腔211和回墨腔212均连通,具体墨盒210通过供墨管243和回墨管244与分别与喷头320相连,也就是供墨腔211通过供墨管243与喷头320相连,回墨腔212通过回墨管244与喷头320相连。通过供墨管243及回墨管244连接,能够满足墨盒210及喷头320更为多样的空间布局。根据需要,在空间允许的情况下,供墨腔211及回墨腔212与喷头320之间也可以直接通过接头连接。负压盒240具体置于墨盒210上方,负压盒240为墨盒210和喷头320提供负压,以实现墨盒210内液料的流出、循环及喷头320的喷射和停止。
如图10-图12所示,负压盒240设有供墨负压腔241和回墨负压腔242。具体的,供墨负压腔241和回墨负压腔242上均设有负压进口和负压出口,负压管A与供墨负压腔241的负压进口相连,为供墨负压腔241提供负压;负压管B与回墨负压腔242的负压进口相连,为回墨负压腔242提供负压;供墨负压腔241为供墨腔211提供负压,回墨负压腔242为回墨腔212提供负压,从而回墨腔212和供墨腔211内负压的相对独立,使得喷射和回墨两个液流相互独立,实现了喷墨组件在正常喷射的情况下液流可以循环回流,也即实现了液料的动态循环。同时,由于喷射和回墨的负压相对独立,使得喷射的压力不受回流负压的影响,实现了喷射作业的不受影响。
墨盒210设有供墨腔211和回墨腔212;供墨腔211上设有若干液料进口,液料进口用于向供墨腔211内供墨。进一步地,回墨腔212上设有液料出口,液料出口与液料回收桶252相连。当供墨腔211随着喷头320阵列式排布不断增长时,可以在供墨腔211上设置若干个液料进口,从而保证液料能够均匀、充足和稳定的流储到所述供墨腔211内。
作为本实施例的一种改进,供墨腔211内设有若干分割板213,分割板213将整个供墨腔211分割为若干子供墨腔211。每个子供墨腔211具体可为2-3个喷头320供墨。子供墨腔211由于容积小,在供墨组件运行过程中可以避免液料的明显晃动,从而减少了由于液料剧烈晃动导致的喷头320内负压的不稳定,从而影响打印的连续性和喷墨质量。具体子供墨腔211可以为一个、两个或者三个及三个以上,以为喷头320供应液料。具体各子供墨腔211 上均设置液料进口,以与液料箱610连接,液料箱610向各自供墨腔211进行供料。也就是液料进口可以在每个子供墨腔211上方设置一个,以使每个子供墨腔211内液料的均衡和充足。
在安装框架100如图9所示的设置有侧板、横向筋和隔板164的情况下,供墨管243和回墨管244设置于在隔板164和驱动板卡330之间,具体可以设置在隔板164和中部的横向筋之间。也就是在隔板164和喷头320之间设有若干供墨管243和若干回墨管244。负压盒240具体设置在顶部筋条163上,墨盒210放置于隔板164上。在若干个喷头320为一组,设置有若干组喷头320的情况下,优选的,每组喷头320设有一个供墨管243和一个回墨管244,供墨管243的一端与喷头320相连,供墨管243的另一端与供墨腔211相连;回墨管244的一端与喷头320相连,回墨管244的另一端与回墨腔212相连。
具体的,供墨管243的上端穿过设置在隔板164上的通孔与供墨腔211连接,供墨管243的下端与喷头320连接,液料在自重的作用下通过供墨管243自供墨腔211流入喷头320,在供墨负压腔241的作用下喷头320做喷射动作,也即喷头320进行打印作业;回墨管244的上端与设置在隔板164上的直角穿板接头245的一端相连,直角穿板接头245的另一端与设置在回墨腔212上的直角宝塔接头246相连,回墨腔212的下端与喷头320相连,液料在回墨负压腔242的作用下自回墨管244的下端经回墨管244、直角穿板接头245和直角宝塔接头246回流至回墨腔212中,从而实现各个喷头320中液料的循环,改善了静止液料易阻塞喷头320的问题。
在供墨组件包括液料箱610和供液泵630的情况下,供液泵630连接于液料箱610与供墨腔211之间。具体液料箱610与供墨腔211的液料进口相连,通过液料泵的驱动为供墨腔211提供液料。优选地,在液料箱610与供墨腔211之间还设有供液过滤器620,也就是供液泵630和供液过滤器620连通设置于液料箱610和供墨腔211之间,以进一步提升进入供墨腔211的液料的纯度,使得3D打印设备更好的工作。具体供液过滤器620的设置请参考上述实施例中的相关设置,此处不再赘述。
进一步地,供墨组件还包括相连接的回液泵251和液料回收桶252,回液泵251与回墨腔212连通,液料回收桶252连通液料箱610。具体请参阅图 13,图13为供墨组件200的液料循环示意图。回墨腔212内的液料在回液泵251的作用下进入液料回收桶252回收,液料回收桶252又与液料箱610相连,从而实现液料的循环,避免了液料外排造成的环境污染和浪费。为了使回收的液料能够达到使用要求,供墨组件包括依次连接的回液泵251、液料回收桶252以及回液过滤器253,回液泵251与回墨腔212连通,回液过滤器253连通液料箱610。也就是在液料回收桶252和液料箱610之间还设有回液过滤器253,以对回收的液料进行过滤后再进入液料箱610重复利用。
更优地,在供墨腔211和/或回墨腔212内设有液位传感器。对供墨腔211而言,当供墨腔211内的液位达到设定的位置时,也即供墨腔211内的液料到达最小量时,液位传感器发出加液信号,此时,可以人工、或者在系统的控制下自动向供墨腔211内加入设定量的液料,具体的,可以由供液泵630向供墨腔211内加液,供液泵630为加液泵。也就是供墨腔211内设有液位传感器,供墨腔211与供液泵630相连,当供墨腔211内的液料达到设定液位时,供液泵630启动,向供墨腔211内输送液料,从而保证供墨腔211能够持续向喷头320供墨。对回墨腔212而言,当回墨腔212内的液位达到设定的位置时,也即回墨腔212内的液料达到最大量时,液位传感器发出抽液信号,此时,将回墨腔212内的液料抽出到液料回收桶252内,具体地,由回液泵251实现回墨腔212内液料的抽出。也就是回墨腔212与回液泵251相连,当回墨腔212内的液料达到设定液位时,回液泵251启动,将液料输送至液料回收桶252。回液泵251为蠕动泵。在本实施例中,供墨管243与喷头320一一对应,也即每个喷头320对应一个供墨管243;而回墨管244与喷头320也是一一对应的,每个回墨管244的上端均与设置在隔板164上的若干直角穿板接头245相连,而设置在回墨腔212上的直角宝塔接头246只有一个,也即若干直角穿板接头245的另一个端汇集后连接于直角宝塔接头246上,从而实现将液料回流到回墨腔212内。
以上供墨组件均可以在3D打印设备上实施,从而改善3D打印设备的喷墨组件300和供墨组件200,提高打印效率、实现液料循环利用,同时也可以提升设备的正常运行时间。
在上述各实施例的基础上,本发明提供的3D打印头还包括清洗组件, 清洗组件包括清洗池与擦洗件,清洗池用于放置清洗液,擦洗件活动安装于清洗池上,用于擦洗喷头。由于打印过程中,喷头喷嘴板部分将会沾染好多微尘和树脂的液滴,影响喷墨效果。故通过上述清洗组件的设置,在清洗池内放置清洗液,并在清洗池内安装擦洗件,通过擦洗件对喷头进行有效清洗,以保证喷墨质量。其被污染的擦洗件可经过清洗液的清洗,重新对喷头进行清洗。清洗池的具体形状此处不做限定,根据需要设置即可。
具体请参阅图6,图6为清洗组件的一种结构示意图。在一个实施例中,擦洗件包括辊轮412与辊轮驱动件,辊轮412转动安装于清洗池411内,且辊轮412的外缘设置有海绵层413,辊轮驱动件驱动连接辊轮412。也就是在清洗池411内转动安装辊轮412,辊轮412在辊轮驱动件的驱动下转动。辊轮驱动件具体可以为电机等能够输出扭矩的驱动装置。电机的输出轴与辊轮412的轴同轴连接,以驱动辊轮412转动。辊轮412的外缘设置海绵层413,优选在辊轮412的外周面上包裹一圈海绵层413,从而辊轮412转动和打印头的移动同时进行,通过海绵层413对喷头320进行清洗。由于海绵层413质地柔软,在对喷嘴的清洗过程中既能够有效对喷嘴板部分的微尘、树脂等液滴进行清洗,且不会损伤喷嘴板,也不会因而对喷嘴板施加的作用力过大而导致喷嘴板刮脱。根据需要,海绵层413也可以替换为雨刮板,也就是在辊轮412上固定连接雨刮板,通过雨刮板随辊轮412的转动对喷头320进行清洗。雨刮板材质较硬,雨刮板本身不易磨损,使用寿命较长。根据需要,擦洗件也可以采用直线运动式的擦洗布等结构。
进一步地,擦洗件还包括顶升件416与托架418,顶升件416设置于清洗池411的底部,托架418固定连接于顶升件416的输出端,辊轮412与托架418转动连接。也就是通过托架418实现辊轮412的转动安装,顶升件416的输出端与托架418固定连接,从而带动托架418上下移动,以满足不同高度的清洗需求。托架418的具体结构可根据需要设置,如设置为包括横向支撑件,辊轮412转动连接于横向支撑件上。横向支撑件的两端分别设置纵向导向件,使得横向支撑件在顶升件416的作用下沿纵向导向件上下移动。具体纵向导向件可以为沿上下方向设置的纵向导轨,横向 支撑件的两端具有与纵向导轨滑动配合的滑块。具体的,辊轮412的安装轴伸出于海绵层413外,并与托架418转动连接。顶升件416具体可以为顶升气缸,顶升气缸固定在清洗池411的底部,具体可以为清洗池411的底面上,其伸缩杆固定在托架418上。根据需要,顶升件416也可以采用液压缸等其他驱动部件。
根据需要,在另一个实施例中,所述清洗组件还包括整体顶升机构,其包括支撑座与整体顶升组件,所述支撑座设置于所述清洗池411的边缘上,所述整体顶升组件安装于所述支撑座上,用于将清洗组件整体抬升或下降。具体整体顶升组件可以为气缸等伸缩驱动件,伸缩驱动件的一端固定安装,以提供支撑力。另一端与支撑座固定连接,以带动支撑座上升或下降,进而带动与支撑座固定连接的清洗组件整体上升或下降,从而更加有利于打印头与清洗组件在清洗中减少磨损。
更进一步地,清洗池411的内壁上安装有用于清理海绵层413的清理刷415。通过清理刷415的设置,能够对海绵层413进行清理。清理刷415的安装位置应使得清理刷415的头部与海绵层413接触,以对其进行清理。如清理刷415水平设置,其尾端也就是刷柄与清洗池411的侧壁固定连接,头部也就是刷毛部分与海绵层413接触。清理刷415的刷毛具体可以采用硅胶、塑料等软质刷毛。
根据需要,清洗池411的内壁上还设置有用于挤压海绵层413的刮刀414。通过刮刀414对海绵层413吸附的清洗液进行挤压,刮刀414的头部应与海绵层413相抵,以向海绵层413施加压力,将其挤干,以更好的吸收喷头表面的微尘和树脂等液滴。
具体的,刮刀414位于清理刷415的上方,清洗液的液面位于刮刀414和清理刷415之间。则随着辊轮412的转动,海绵层413在清洗液中受清洗液的冲洗,且通过清理刷415对海绵层413进行洗刷,进而洗刷干净的海绵层413转动至刮刀414位置,受刮刀414的加压作用,将其吸附的清洗液挤出,而后随之转动与喷头接触,对喷头进行清洗。
通过清理刷415及刮刀414的设置,能够方便的对海绵层413进行清洗及刮干,以更好的对喷头320进行清洗。根据需要,也可以在海绵层413 使用一段时间后更换新的海绵层413,则无需设置清理刷415及刮刀414。
擦洗件并不局限于上述的辊轮机构,根据需要,在另一个实施例中,所述擦洗件包括擦洗安装板、驱动件和清洁块,所述擦洗安装板转动安装于所述清洗池内,所述驱动件与擦洗安装板连接以驱动擦洗安装板转动,所述清洁块设置于所述擦洗安装板的表面。则通过驱动件带动擦洗安装板进而带动清洁块转动,以对喷头进行擦洗。具体清洁块的转动角度可根据擦洗需要及清洁块的尺寸相应设置。清洁块转动至与喷头320接触时对喷头320进行擦洗,在其转动至浸入清洗液中时则相应的进行清洗。进一步地,所述清洁块通过压板设置于所述擦洗安装板上。如通过在清洁块相对的两端分别设置压板,压板与擦洗安装板固定连接并将清洁块的两端压紧于二者之间,从而实现清洁块的固定。清洁块具体可以采用海绵,也可以采用橡胶等柔性材料。
在另一个实施例中,所述清洗池411内还设置有喷淋机构,喷淋机构包括连接管与多个喷雾器,所述连接管设置于所述擦洗安装板的侧边,各所述喷雾器间隔连通设置于所述连接管上。也就是在擦洗安装板的侧边设置连接管,与连接管连通的设置有多个喷雾器,多个喷雾器间隔设置,优选均匀间隔设置。通过喷雾器对清洁块进行喷淋,以将清洁块清洗干净,更好地进行喷头擦洗。根据需要,喷淋机构也可以设置于清洗池411内的其他位置,并使喷雾器的喷嘴朝向清洁块即可。在擦洗件包括辊轮412的情况下,则喷淋机构可以连接于清洗池411上,并使喷雾器的喷嘴朝向辊轮412。
在另一个实施例中,清洗池411的底部设置有废液盒。具体的,清洗池411的底部设置有阀门,清洗时阀门关闭。在需要更换清洗液时,阀门打开,清洗池411内清洗过的废液流入废液盒以收集,从而保持清洗池411内清洗液干净。废液盒中的废液具体可以经过后续净化处理等重复利用。根据需要清洗池411与废液盒可以通过管路连接,阀门具体可以设置于管路内。
为了便于清洗池411内清洗液的液位控制,清洗池411内还设置有液位传感器417。根据液位传感器417的反馈控制清洗液的量,能够实现液 位的精确控制。具体液位传感器417的结构及工作原理请参考现有技术,此处不再赘述。
在上述各实施例的基础上,该3D打印头还包括与供墨组件配合的气源装置。具体请参阅图7,图7为气源装置的一种结构示意图。供墨组件的墨盒具有至少两个进气口,气源装置包括第一负压发生器531和第二负压发生器532,第一负压发生器531的出气口和第二负压发生器532的出气口分别与墨盒的至少两个进气口连接,用以向墨盒内通入不同压力的负压。需要说明的是,此处的连接指通过连接使相连接的部件间连通。
其中,墨盒具有至少两个进气口,两个进气口的位置可根据需要设置。具体第一负压发生器531和第二负压发生器532均可以采用负压泵等常规能够产生负压的设备。第一负压发生器531和第二负压发生器532具体分别通过负压管660连接至墨盒210,且第一负压发生器531和第二负压发生器532与墨盒的不同进气口连接。根据需要,第一负压发生器531和第二负压发生器532也可以直接通过负压接头与墨盒的不同进气口连接。在墨盒设置有两个进气口的情况下,则第一负压发生器531和第二负压发生器532分别与墨盒不同的进气口连接;当墨盒210设置有三个及三个以上的进气口的情况下,则第一负压发生器531可以与墨盒多个进气口中的至少一个连接,相应的第二负压发生器532可以与墨盒剩余的进气口中的至少一个连接。
与第一负压发生器531连接的墨盒的进气口和与第二负压发生器532连接的墨盒的进气口之间的间距尽可能大,以使墨盒中的墨在压力差的作用下更充分的循环流动。如在墨盒的相对两端分别设置进气口,第一负压发生器531和第二负压发生器532则对应的分别与两端的进气口连接。
需要说明的是,图8中墨盒210仅示出了一个进气口,与之连接的相应仅示出第一负压发生器531,第二负压发生器532并未示出。
通过第一负压发生器531和第二负压发生器532的设置,以向墨盒的至少两个进气口同时加入负压,此时对两个进气口的负压压力值进行调节,使之产生压力差,墨盒中的墨便可循环流动起来,避免了微小杂质的堆积及由此造成的打印头喷头堵塞。同时,墨的循环流动也避免了墨由于长时 间静止而产生气泡,进而提高了喷墨精度,减少废品率的同时,节约成本,保质保量。
进一步地,气源装置还包括气源过滤组件,气源过滤组件与外部气源连接,气源过滤组件的出气口分别与第一负压发生器531的进气口和第二负压发生器532的进气口连接,第一负压发生器531的出气口和第二负压发生器532的出气口分别与墨盒的不同进气口连接。需要说明的是,此处的连接指通过连接使相连接的部件间连通。也就是第一负压发生器531和第二负压发生器532分别具有进气口和出气口,进气口用于外接外部气源,出气口则分别与墨盒的不同进气口连接。第一负压发生器531和第二负压发生器532与外部气源之间分别设置有气源过滤组件,既包括第一负压发生器531和第二负压发生器532共用一个气源过滤组件,也包括二者分别对应连接不同的气源过滤组件。通过气源过滤组件的设置,对进入墨盒的气体进行过滤,以达到过滤等级要求,避免引入杂质造成对墨的污染。根据需要,在气源满足要求的情况下也可以不设置气源过滤组件。
具体的,气源过滤组件包括气源处理器511和精密过滤器512,气源处理器511的进气口与外部气源连接,精密过滤器512的进气口与气源处理器511的出气口连接,精密过滤器512的出气口分别与第一负压发生器531的进气口和第二负压发生器532的进气口连接。需要说明的是,此处的连接指通过连接使相连接的部件间连通。也就是外部气源的气体依次经过气源处理器511和精密过滤器512的过滤作用,通过多级多次过滤,以提高过滤精度。具体气源处理器511用于过滤压缩空气中的水、油及固体颗粒,精密过滤器512则用于对经气源处理器511过滤的压缩空气进行更高精度的过滤。具体气源处理器511及精密过滤器512的结构及工作原理均可参考现有技术,此处不做具体限定。
进一步地,气源装置还包括第一减压阀521和第二减压阀522,第一负压发生器531的前方连接第一减压阀521,第二负压发生器532的前方连接第二减压阀522。需要说明的是,此处的连接指通过连接使相连接的部件间连通。通过第一减压阀521和第二减压阀522的设置,以实现稳压功能,使得供气稳定。在设置有气源过滤组件的情况下,则具体的,精密 过滤器512的出气口分别连接第一减压阀521的入口和第二减压阀522的入口,第一减压阀521的出口连接第一负压发生器531的进气口;第二减压阀522的出口连接第二负压发生器532的进气口。也就是过滤后的气体分别经过对应的减压阀稳压后再进入第一负压发生器531和第二负压发生器532,以保证二者的供气稳定。具体第一减压阀521和第二减压阀522的结构及工作原理请参考现有技术,此处不再赘述。
更进一步地,气源装置还包括第一负压储存器543和第二负压储存器542,第一负压发生器531的出气口连接第一负压储存器543的进气口,第二负压发生器532的出气口连接第二负压储存器542的进气口,第一负压储存器543的出气口和第二负压储存器542的出气口分别与墨盒的不同进气口连接。需要说明的是,此处的连接指通过连接使相连接的部件间连通。也就是第一负压发生器531和第二负压发生器532产生的负压先分别进入对应的第一负压储存器543和第二负压储存器542的存储,再由第一负压储存器543和第二负压储存器542向墨盒不同的进气口进行供气。通过第一负压储存器543和第二负压储存器542的设置,保证了稳定充足的负压,具体第一负压储存器543和第二负压储存器542可以为负压盒等存储装置。根据需要,第一负压储存器543和第二负压储存器542可以集成为一个整体的压力盒,该压力盒具有相隔绝的至少两个腔体,以分别与第一负压发生器531和第二负压发生器532连接。
在上述各实施例的基础上,为方便的进行墨盒内液体对打印头的湿润及清洗,墨盒的进气口还与外部气源连接,以根据需要向墨盒内提供正压。具体正压清洗过程可参考现有技术,此处不再赘述。具体的,气源装置还包括第三减压阀523,第三减压阀523的入口与精密过滤器512的出气口连接,第三减压阀523的出口连接正压储存器541的进气口,正压储存器541的出气口与墨盒的进气口连通。需要说明的是,此处的连接指通过连接使相连接的部件间连通。也就是外部气源经过气源过滤组件的过滤后,具体可以依次经过气源处理器511和精密过滤器512的过滤后,经过第三减压阀523,经其稳压作用后进入正压储存器541,正压储存器541以向墨盒的进气口提供稳定的正压气体。当打印头需要清洗时,气体经过上述路 径处理对打印头进行清洗。正压储存器541可以与第一负压储存器543和第二负压储存器542一起集成为压力盒,该压力盒具有至少三个腔体,以分别与第一负压储存器543、第二负压储存器542和外部气源连接。
进一步地,为了便于正压和负压的切换,并简化整体结构,气源装置还包括第一两位三通阀551、第二两位三通阀552和三通接头,其中,正压储存器541的出气口与第一两位三通阀551的第一进气口连接,第二负压储存器542的出气口与第一两位三通阀551第二进气口连接,第一两位三通阀551的出气口与三通接头的第一接口连接,三通接头的第二接口与第二两位三通阀552的第一进气口连接,三通接头的第三接口与墨盒的第一进气口连接,第一负压储存器543的出气口与第二两位三通阀552的第二进气口连接,第二两位三通阀552的出气口与墨盒的第二进气口连接。需要说明的是,此处的连接指通过连接使相应连接件间连通。通过上述设置,当打印头需要清洗时,控制第一两位三通阀551和第二两位三通阀552同时切换正压,对打印头进行清洗;当打印头不需要喷墨时,控制一两位三通阀和第二两位三通阀552同时切换为负压,即墨盒的第一进气口和第二进气口同时加入负压,此时对第一进气口和第二进气口的负压压力值进行调节,使之产生压力差,墨盒中的墨便可循环流动起来。
本申请还提供了一种3D打印头,该3D打印头包括安装框架、供墨组件和喷墨组件;供墨组件包括墨盒,墨盒设置于安装框架上;喷墨组件包括设置于安装框架的喷头及驱动板卡,喷头与墨盒连通,驱动板卡插接于喷头上,用于控制喷头喷墨。
也就是在该实施例中,与上述各实施例不同的是,喷头与墨盒的连通可通过喷头与墨盒直接连通而不经过分流管的分流作用,如各喷头分别通过各自独立的连接管与墨盒连通,或者各喷头分别通过接头与墨盒直接连通。而对于安装框架、供墨组件及喷墨组件的其他各部分结构均可参考上述各实施例中的相关设置,此处不再赘述。该实施例中,驱动板卡插接于喷头上。采用插接的方式,便于驱动板卡与喷头的安装,维护方便。具体的,驱动板卡插接于喷头上且通过插接实现信号连接,则喷头与驱动板卡 无需再单独设置线路连接,故减少了线路连接,进而减少故障点发生,且节约安装空间。
基于上述实施例中提供的3D打印头,本发明还提供了一种3D打印机,该3D打印机包括上述实施例中任意一种3D打印头。由于该3D打印机采用了上述实施例中的3D打印头,所以该3D打印机的有益效果请参考上述实施例。
具体的,在一实施方式中,一种3D打印机,所述3D打印机包括3D打印头,所述的3D打印头包括:安装框架、供墨组件以及喷墨组件;所述安装框架包括连接板、三点调节板以及盖板,所述连接板用于连接驱动模组并带动所述3D打印头运动,所述三点调节板设置于所述连接板上,所述盖板活动安装于所述三点调节板上;所述供墨组件包括相互连通的墨盒与分流管,所述墨盒安装于所述三点调节板上,所述分流管设置于所述盖板上;所述喷墨组件包括打印底板、喷头以及驱动板卡,所述打印底板与所述盖板连接,所述喷头安装于所述打印底板上,且与所述分流管连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
上述3D打印机,通过打印机构的墨盒通过外置于三点调节板上,有效避免由于驱动板卡发热而加热墨盒,从而改变墨水温度,继而引发墨水粘度变化造成喷墨质量下降问题;同时墨盒外置使得在打印过程中可依靠自然风对墨盒进行简单有效的降温;并且采用三点调节板活动安装于盖板上,有利于实现平稳、高效地调节打印机构的高度与直线度;进一步地,通过在盖板上设置分流管,从而有效代替墨盒与喷头之间连接的若干进液管,极大简化了打印机构的安装复杂度,有利于降低安装及维护成本。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本实用新型的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对实用新型专利范围的限制。应当指出 的是,对于本领域的普通技术人员来说,在不脱离本实用新型构思的前提下,还可以做出若干变形和改进,这些都属于本实用新型的保护范围。因此,本实用新型专利的保护范围应以所附权利要求为准。

Claims (34)

  1. 一种3D打印头,其特征在于,所述的3D打印头包括:供墨组件以及喷墨组件;
    所述供墨组件包括相互连通的墨盒与分流管;
    所述喷墨组件包括喷头和驱动板卡,所述喷头与所述分流管连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
  2. 根据权利要求1所述的3D打印头,其特征在于,包括安装框架,所述安装框架包括连接板、三点调节板以及盖板,所述连接板用于连接驱动模组并带动所述3D打印头运动,所述三点调节板设置于所述连接板上,所述盖板活动安装于所述三点调节板上;
    所述墨盒安装于所述三点调节板上,所述分流管设置于所述盖板上;
    所述喷墨组件还包括打印底板,所述打印底板与所述盖板连接,所述喷头安装于所述打印底板上。
  3. 根据权利要求2所述的3D打印头,其特征在于,所述分流管包括若干支管,各所述支管相互连通。
  4. 根据权利要求3所述的3D打印头,其特征在于,所述喷头具有若干个,各所述喷头成阵列设置于所述打印底板上,每一列所述喷头与一所述支管对应设置。
  5. 根据权利要求2所述的3D打印头,其特征在于,所述盖板上设置有与所述三点调节板的三点位置对应的定位座,所述定位座上安装有微分头,用于调节所述三点调节板的水平直线度。
  6. 根据权利要求5所述的3D打印头,其特征在于,所述微分头的一端具有旋钮,另一端为推杆,所述推杆沿水平方向抵接所述三点调节板。
  7. 根据权利要求2所述的3D打印头,其特征在于,所述盖板上设置有电源插头与光纤防护盒。
  8. 根据权利要求2所述的3D打印头,其特征在于,所述墨盒为非金属材料制成的盒体。
  9. 根据权利要求1所述的3D打印头,其特征在于,包括安装框架,所述安装框架包括相对设置的侧板以及连接两个所述侧板的若干横向筋, 所述喷头设置于位于底部的所述横向筋上。
  10. 根据权利要求9所述的3D打印头,其特征在于,所述驱动板卡固定连接于位于中部的所述横向筋上。
  11. 根据权利要求9所述的3D打印头,其特征在于,相对设置的所述侧板上均开设有导轨槽,所述导轨槽内滑动安装有隔板,所述隔板用于承托所述墨盒,与所述隔板配合设置有用于将所述隔板与所述侧板锁紧或解锁的固定部件。
  12. 根据权利要求9所述的3D打印头,其特征在于,位于中部位置的所述横向筋开设有若干通孔,所述通孔用于连接压缩空气冷却所述驱动板卡。
  13. 根据权利要求1所述的3D打印头,其特征在于,所述墨盒的进墨口安装有消泡器。
  14. 根据权利要求1所述的3D打印头,其特征在于,所述墨盒的外缘设置有脱气腔。
  15. 根据权利要求1至14任一项所述的3D打印头,其特征在于,所述供墨组件还包括液料箱、供液泵以及供液过滤器,所述供液泵和所述供液过滤器连通设置于所述液料箱与所述供墨腔之间。
  16. 根据权利要求15所述的3D打印头,其特征在于,所述供液过滤器包括连接于所述供液泵的出口的一级过滤器和连接于所述一级过滤器出口的二级过滤器。
  17. 根据权利要求16所述的3D打印头,其特征在于,所述供墨组件还包括设置于所述一级过滤器的出口的脱气膜,所述脱气膜用于将所述墨水中的气体脱离。
  18. 根据权利要求1-14任一项所述的3D打印头,其特征在于,所述供墨组件还包括负压盒,所述墨盒具有供墨腔和回墨腔,所述负压盒具有供墨负压腔和回墨负压腔,所述供墨腔与所述供墨负压腔连通,所述回墨腔与所述回墨负压腔连通;
    所述喷头与所述墨盒的供墨腔和回墨腔均连通。
  19. 根据权利要求18所述的3D打印头,其特征在于,所述供墨腔内 设有若干分割板,形成若干子供墨腔。
  20. 根据权利要求18所述的3D打印头,其特征在于,所述供墨组件还包括依次连接的回液泵、液料回收桶以及回液过滤器,所述回液泵与所述回墨腔连通,所述回液过滤器连通所述液料箱。
  21. 根据权利要求1-14任一项所述的3D打印头,其特征在于,还包括清洗组件,所述清洗组件包括清洗池与擦洗件,所述清洗池用于放置清洗液,所述擦洗件活动安装于所述清洗池上,用于擦洗所述喷头。
  22. 根据权利要求21所述的3D打印头,其特征在于,所述擦洗件包括辊轮与辊轮驱动件,所述辊轮转动安装于所述清洗池内,且所述辊轮的外缘设置有海绵层,所述辊轮驱动件驱动连接所述辊轮。
  23. 根据权利要求22所述的3D打印头,其特征在于,所述擦洗件还包括顶升件与托架,所述顶升件设置于所述清洗池的底部,所述托架固定连接于所述顶升件的输出端,所述辊轮与所述托架转动连接。
  24. 根据权利要求22所述的3D打印头,其特征在于,所述清洗池的内壁上安装有用于清理所述海绵层的清理刷。
  25. 根据权利要求22所述的3D打印头,其特征在于,所述清洗池的内壁上还设置有用于挤压所述海绵层的刮刀。
  26. 根据权利要求1-14任一项所述的3D打印头,其特征在于,还包括气源装置,所述墨盒具有至少两个进气口;所述气源装置包括第一负压发生器和第二负压发生器,所述第一负压发生器的出气口和所述第二负压发生器的出气口分别与所述墨盒的至少两个所述进气口连接,用以向所述墨盒内通入不同压力的负压。
  27. 根据权利要求26所述的3D打印头,其特征在于,所述气源装置还包括气源过滤组件,所述气源过滤组件与外部气源连接,所述气源过滤组件的出气口分别与所述第一负压发生器和所述第二负压发生器的进气口连接。
  28. 根据权利要求27所述的3D打印头,其特征在于,所述气源过滤组件包括气源处理器和精密过滤器,所述气源处理器的进气口连接外部气源,所述精密过滤器的进气口与所述气源处理器的出气口连接,所述精密 过滤器的出气口分别与所述第一负压发生器的进气口和所述第二负压发生器的进气口连接。
  29. 根据权利要求28所述的3D打印头,其特征在于,所述气源装置还包括第一减压阀和第二减压阀,所述精密过滤器的出气口分别连接所述第一减压阀的入口和所述第二减压阀的入口,所述第一减压阀的出口连接所述第一负压发生器的进气口,所述第二减压阀的出口连接所述第二负压发生器的进气口。
  30. 根据权利要求29所述的3D打印头,其特征在于,所述气源装置还包括第一负压储存器和第二负压储存器,所述第一负压储存器的进气口连接所述第一负压发生器的出气口,所述第二负压储存器的进气口连接所述第二负压发生器的出气口,所述第一负压储存器的出气口和所述第二负压储存器的出气口分别与所述墨盒的不同进气口连接。
  31. 根据权利要求30所述的3D打印头,其特征在于,所述气源装置还包括第三减压阀和正压储存器,所述第三减压阀的入口与所述精密过滤器的出气口连接,所述第三减压阀的出口连接所述正压储存器的进气口,所述正压储存器的出气口与所述墨盒的进气口连接。
  32. 根据权利要求31所述的3D打印头,其特征在于,所述气源装置还包括第一两位三通阀、第二两位三通阀和三通接头,所述正压储存器的出气口与所述第一两位三通阀的第一进气口连接,所述第二负压储存器的出气口与所述第一两位三通阀的第二进气口连接,所述第一两位三通阀的出气口与所述三通接头的第一接口连接,所述三通接头的第二接口与所述第二两位三通阀的第一进气口连接,所述三通接头的第三接口与所述墨盒的第一进气口连接,所述第一负压储存器的出气口与所述第二两位三通阀的第二进气口连接,所述第二两位三通阀的出气口与所述墨盒的第二进气口连接。
  33. 一种3D打印头,其特征在于,所述的3D打印头包括安装框架、供墨组件和喷墨组件;
    所述供墨组件包括墨盒,所述墨盒设置于所述安装框架上;
    所述喷墨组件包括设置于所述安装框架的喷头及驱动板卡,所述喷头 与所述墨盒连通,所述驱动板卡插接于所述喷头上,用于控制所述喷头喷墨。
  34. 一种3D打印机,其特征在于,包括如权利要求1-33任一项所述的3D打印头。
PCT/CN2020/119317 2020-07-27 2020-09-30 一种3d打印头及3d打印机 WO2022021603A1 (zh)

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