CN114986892A - Print head system and 3D printing equipment - Google Patents

Print head system and 3D printing equipment Download PDF

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Publication number
CN114986892A
CN114986892A CN202210596003.0A CN202210596003A CN114986892A CN 114986892 A CN114986892 A CN 114986892A CN 202210596003 A CN202210596003 A CN 202210596003A CN 114986892 A CN114986892 A CN 114986892A
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CN
China
Prior art keywords
assembly
ink
maintenance
head
printhead
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210596003.0A
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Chinese (zh)
Inventor
王志刚
任广宁
马睿
袁梦清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kocel Intelligent Machinery Ltd
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Kocel Intelligent Machinery Ltd
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
Application filed by Kocel Intelligent Machinery Ltd filed Critical Kocel Intelligent Machinery Ltd
Priority to CN202210596003.0A priority Critical patent/CN114986892A/en
Publication of CN114986892A publication Critical patent/CN114986892A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/321—Feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/35—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The application relates to a printing head system, which comprises an ink box assembly, a spray head maintenance assembly, a pressure regulation assembly and a spray head assembly, wherein the ink box assembly and the spray head maintenance assembly are communicated with the spray head assembly, the pressure regulation assembly comprises a negative pressure loop and a positive pressure loop, the negative pressure loop and the positive pressure loop are communicated with the spray head assembly, when the ink box is in a first state, ink in the spray head assembly is cleaned, and the spray head maintenance assembly provides maintenance liquid for the spray head assembly; when being in the second state, the clearance maintenance liquid in the shower nozzle subassembly, just the ink horn subassembly to the shower nozzle subassembly supplies ink in order to open printing work, pressure adjustment subassembly is used for providing malleation and negative pressure to the shower nozzle subassembly. The application also relates to a 3D printing device. The problem of the shower nozzle easy production jam in the present 3D printing apparatus can be solved to this scheme.

Description

Print head system and 3D printing equipment
Technical Field
The invention relates to the technical field of 3D printing equipment, in particular to a printing head system and 3D printing equipment.
Background
With the continuous development of industry, the 3D printing sand mold technology is gradually formed, and 3D printing is an additive manufacturing technology for obtaining three-dimensional workpieces by adding materials layer by layer. At present, in the field of industrial ink-jet printers, when the printer is in a standby state, because a spray head does not work for a long time, certain components of ink in the spray head react with air to generate crystals, or the components are volatilized to separate out the crystals, or the components are static for a long time to generate precipitates, and the problems can cause the spray head to be blocked.
The printer nozzle is a core component of the whole device, the printing uniformity of the printing head is affected by the mode, so that the printing quality is affected, and in the maintenance process, the maintenance cost is high due to the complex structure of the printing head.
Disclosure of Invention
In view of this, it is necessary to provide a printing head system and a 3D printing apparatus for solving the problem that the nozzle in the current 3D printing apparatus is easily clogged.
In order to solve the problems, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention discloses a printhead system, including an ink cartridge assembly, a head maintenance assembly, a pressure adjustment assembly, and a head assembly, where the ink cartridge assembly and the head maintenance assembly are both communicated with the head assembly, the pressure adjustment assembly includes a negative pressure loop and a positive pressure loop, the negative pressure loop and the positive pressure loop are both communicated with the head assembly, and when in a first state, ink in the head assembly is cleaned, and the head maintenance assembly provides a maintenance liquid to the head assembly; when being in the second state, the clearance maintenance liquid in the shower nozzle subassembly, just the ink horn subassembly to the shower nozzle subassembly supplies ink in order to open printing work, pressure adjustment subassembly is used for providing malleation and negative pressure to the shower nozzle subassembly.
In one embodiment, the ink cartridge further comprises a liquid switching valve, and the ink cartridge assembly and the head maintenance assembly are communicated with the head assembly through the liquid switching valve.
In one embodiment, the spray head maintenance assembly comprises a maintenance liquid cavity, a first liquid pump and a first solenoid valve which are communicated in sequence.
In one embodiment, the ink cartridge assembly includes an ink storage chamber, a second liquid pump, and a second solenoid valve in communication.
In one embodiment, the ink cartridge assembly further comprises a degassing member, and the degassing member is communicated between the second electromagnetic valve and the liquid switching valve.
In one embodiment, the pressure regulating assembly further comprises a gas switching valve, and the negative pressure circuit and the positive pressure circuit are communicated with the showerhead assembly through the gas switching valve.
In one embodiment, the ink bottle further comprises a circulating ink box, the spray head assembly comprises an ink supply cavity and a spray head, the spray head is provided with a liquid inlet, a liquid outlet and a nozzle which are communicated, the liquid inlet is communicated with the ink supply cavity, the liquid outlet is communicated with one end of the circulating ink box, a third valve body is arranged between the liquid outlet and the circulating ink box, and the other end of the circulating ink box is communicated with the ink box assembly.
In one embodiment, the positive pressure loop includes a main pipeline and two branch pipelines, one end of each of the two branch pipelines is communicated with the main pipeline, the other end of one of the branch pipelines is communicated with the gas switching valve, and the other end of the other branch pipeline is communicated between the liquid outlet and the third valve body.
In one embodiment, a circulation negative pressure pipe is arranged on the circulation ink box and used for controlling the negative pressure in the circulation ink box.
In a second aspect, an embodiment of the present invention further discloses a 3D printing apparatus, including the printing head system described above.
The technical scheme adopted by the invention can achieve the following beneficial effects:
in the printing head system disclosed by the embodiment of the invention, the nozzle maintenance component and the pressure adjusting component are additionally arranged, so that the nozzle maintenance component can inject the maintenance liquid into the nozzle component through the matching of the pressure adjusting component in the shutdown process of the printing head system to play a role of maintaining the nozzle, thereby preventing the ink from precipitating and crystallizing in a flow passage or a nozzle in the nozzle, effectively ensuring the ejection rate of the nozzle, reducing the damage rate of the nozzle, reducing the loss caused by the blockage of the nozzle, further ensuring better printing uniformity and improving the printing quality.
Drawings
Fig. 1 is a schematic diagram of a printhead system according to an embodiment of the disclosure.
Description of reference numerals:
100-ink box component, 110-ink storage cavity, 120-second liquid pump, 130-second solenoid valve, 140-degassing valve, 200-nozzle maintenance component, 210-maintenance liquid cavity, 220-first liquid pump, 230-first solenoid valve, 240-filter, 300-pressure regulation component, 310-negative pressure loop, 320-positive pressure loop, 321-main pipeline, 322-branch pipeline, 330-gas switching valve, 400-nozzle component, 410-ink supply cavity, 420-nozzle, 500-liquid switching valve, 600-circulation ink box, 700-third valve body and 800-circulation negative pressure tube.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for purposes of illustration only and do not represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an embodiment of the present invention discloses a printhead system including a cartridge assembly 100, a head maintenance assembly 200, a pressure adjustment assembly 300, and a head assembly 400.
The ink cartridge assembly 100 is used for supplying ink to the nozzle assembly 400 to realize continuous printing operation, the nozzle maintenance assembly 200 is used for supplying maintenance liquid to the nozzle assembly 400, and particularly, the ink cartridge assembly 100 and the nozzle maintenance assembly 200 are both communicated with the nozzle assembly 400, in this case, when printing operation is performed, the nozzle maintenance assembly 200 is closed, and the ink cartridge assembly 100 supplies ink to the nozzle assembly 400 to realize normal printing operation; when maintenance is required, the ink supply from the cartridge assembly 100 is stopped, and the head maintenance assembly 200 supplies a certain amount of maintenance liquid to the head assembly 400 to perform the maintenance of the head assembly 400, and of course, the printhead system may be in a cleaning position to facilitate the maintenance.
In one embodiment, the pressure regulating assembly 300 includes a negative pressure circuit 310 and a positive pressure circuit 320, wherein the negative pressure circuit 310 and the positive pressure circuit 320 are both in communication with the showerhead assembly 400, in which case the negative pressure circuit 310 provides negative pressure to the showerhead assembly 400 and the positive pressure circuit 320 provides positive pressure to the showerhead assembly 400. When the printing operation is stopped and the head assembly 400 needs to be maintained in the first state, the ink in the head assembly 400 is cleaned, and the head maintenance assembly 200 provides the maintenance liquid to the head assembly 400; when in the second state, i.e., when the printhead system requires printing, the maintenance fluid in the head assembly 400 is cleaned, and the ink cartridge assembly 100 supplies ink to the head assembly 400 to start the printing, the pressure regulating assembly 300 is used to provide positive and negative pressure to the head assembly 400.
In a specific working process, when the printing operation is stopped and the head assembly 400 needs to be maintained, the printhead system may be first opened to the cleaning position, the head maintenance assembly 200 is opened, the loop 320 is opened, and the negative pressure loop 310 is closed, at this time, the maintenance liquid in the head maintenance assembly 200 flows into the head assembly 400, then, through the action of the positive pressure, a part of the maintenance liquid flows out through the head 420 of the head assembly 400, thereby performing the functions of discharging the ink in the head assembly 400 and cleaning the head 420, after a certain time elapses, the positive pressure loop is closed, the negative pressure loop is opened, and under the action of the negative pressure, the maintenance liquid does not flow out from the head 420, at this time, the head maintenance assembly 200 is closed, so that a part of the inner cavity of the head assembly 400 is filled with the maintenance liquid, thereby performing the function of maintaining the head assembly 400.
Subsequently, when a printing operation is required, the negative pressure circuit 310 may be closed, the positive pressure circuit 320 may be opened, so that the maintenance liquid temporarily stored in the head assembly 400 may be discharged, then the cartridge assembly 100 may be opened, so that the maintenance liquid in the head assembly 400 may be flushed clean by the ink, then the positive pressure circuit 320 may be closed, and the negative pressure circuit 310 may be opened, so that the ink may not flow out from the head 420, and at this time, a normal printing operation may be implemented by controlling the print head system.
As can be seen from the above, in the printhead system disclosed in the embodiment of the present invention, by adding the nozzle head maintenance component 200 and the pressure adjustment component 300, during the shutdown process of the printhead system, the nozzle head maintenance component 200 can inject the maintenance liquid into the nozzle head component 400 through the cooperation of the pressure adjustment component 300 to perform the function of maintaining the nozzle head 420, so as to prevent the ink from precipitating and crystallizing at the internal flow channel or nozzle of the nozzle head 420, effectively ensure the ejection rate of the nozzle head 420, reduce the damage rate of the nozzle head 420, and reduce the loss caused by the blockage of the nozzle head 420, thereby enabling the printing uniformity to be better, and improving the printing quality.
The printhead system disclosed in the present embodiment may further include a liquid switching valve 500, and the ink cartridge assembly 100 and the head maintenance assembly 200 may be communicated with the head assembly 400 through the liquid switching valve 500. In this case, when the head maintenance unit 200 is required to supply the maintenance liquid to the head unit 400, the liquid switching valve 500 may be controlled to switch to the switch for connecting the head maintenance unit 200 and the head unit 400, and when the ink cartridge unit 100 is required to supply the maintenance liquid to the head unit 400, the liquid switching valve 500 may be controlled to switch to the switch for connecting the ink cartridge unit 100 and the head unit 400. The mode is convenient for switching the ink and the maintenance liquid, so that the working efficiency can be improved, and the mode can also lead the structure of the printing head system to be compact, so as to facilitate the layout of all the parts.
Of course, in a specific communication process, both the cartridge assembly 100 and the head maintenance assembly 200 may communicate with the liquid switching valve 500 through a pipe, and likewise, the liquid switching valve 500 may communicate with the head assembly 400 through a pipe, so that the layout of the components can be more convenient.
Further, to facilitate the supply of the maintenance fluid to showerhead assembly 400, showerhead maintenance assembly 200 may include a maintenance fluid chamber 210, a first fluid pump 220, and a first solenoid valve 230 in serial communication. At this time, the maintenance liquid chamber 210 is used for storing the maintenance liquid, the first liquid pump 220 is used for providing a hydraulic pressure so that the maintenance liquid in the maintenance liquid chamber 210 can be easily delivered into the spray head assembly 400, the first solenoid valve 230 is used for implementing the liquid feeding or closing of the spray head maintenance assembly 200 and preventing the liquid from flowing back, and the above-mentioned structural components can ensure that the spray head maintenance assembly 200 can easily provide the maintenance liquid into the spray head assembly 400 and can also improve the stability of the liquid flow.
Correspondingly, a filter 240 may be further disposed between the first solenoid valve 230 and the first liquid pump 220, and the filter 240 may filter the maintenance liquid, so as to prevent impurities in the maintenance liquid from entering the spray head assembly 400, and further ensure the cleanliness of the spray head assembly 400. Of course, the maintenance liquid chamber 210, the first liquid pump 220 and the first solenoid valve 230 can be communicated with each other through pipes, so as to facilitate installation and layout of the components.
Similarly, the cartridge assembly 100 may include an ink storage chamber 110, a second liquid pump 120, and a second solenoid valve 130 in communication. The ink storage cavity 110 is used for storing ink to ensure the supply of the ink, a pressure sensor can be arranged in the ink storage cavity 110, so that the ink in the ink storage cavity 110 can be monitored in real time, moreover, the pressure sensor can be provided with a high liquid level and a low liquid level, when the liquid level of the ink is lower than the low liquid level, the need of adding the ink is prompted, and when the liquid level of the ink is higher than the high liquid level, the ink addition to the ink storage cavity 110 is stopped; the second liquid pump 120 is used for providing a hydraulic pressure to easily deliver the ink in the ink storage chamber 110 to the head assembly 400, and the second solenoid valve 130 is used for supplying or stopping the ink supply in the ink storage chamber 110 and preventing the liquid from flowing back, which can ensure that the ink storage chamber 110 can easily supply the ink to the head assembly 400 and can also improve the stability of the liquid flow. Of course, the above components may be communicated with each other through a pipe to facilitate the layout of the components.
Further, the cartridge assembly 100 may further include a degassing member 140, and the degassing member 140 may be communicated between the second solenoid valve 130 and the liquid switching valve 500. The degassing member 140 is used for discharging gas in the ink, and specifically, the degassing member 140 applies degassing negative pressure through a negative pressure pipe, so that ink jet frame loss caused by too high gas content in the ink entering the nozzle assembly 400 is prevented, and the printing quality is ensured. Meanwhile, a filter may be disposed between the second solenoid valve 130 and the second liquid pump 120, so as to filter ink, prevent impurities in the ink from entering the nozzle assembly 400 and affecting the cleanliness of the nozzle assembly 400, and finally improve the printing quality.
In the disclosed embodiment, the pressure regulating assembly 300 may further include a gas switching valve 330, and the negative pressure circuit 310 and the positive pressure circuit 320 may be in communication with the showerhead assembly 400 through the gas switching valve 330. In this case, when the positive pressure and the negative pressure are required to be switched, the negative pressure circuit 310 or the positive pressure circuit 320 can be quickly switched by adjusting the gas switching valve 330, so that the working efficiency can be improved, the assembly of the components can be facilitated, and the printing head system is compact and better. Of course, for ease of control, corresponding solenoid valves may be provided on both the positive pressure circuit 320 and the negative pressure circuit 310 to facilitate better control of the supply of positive and negative pressures.
Further, the print head system disclosed in the embodiment of the present invention may further include a circulation ink cartridge 600, the nozzle assembly 400 may include an ink supply cavity 410 and a nozzle 420, the nozzle 420 may have a liquid inlet, a liquid outlet and a nozzle that are communicated, the liquid inlet may be communicated with the ink supply cavity 410, the liquid outlet may be communicated with one end of the circulation ink cartridge 600, a third valve 700 may be disposed between the liquid outlet and the circulation ink cartridge 600, and the other end of the circulation ink cartridge 600 may be communicated with the ink cartridge assembly 100. In this case, during printing, the third valve body 700 may be opened, and then the circulation of ink may be performed by the circulation tank 600, so that the flow of ink in the ink path of the head 420 and the flow of ink on the nozzle surface may be maintained at all times, thereby further preventing the head 420 from being clogged and affecting the printing quality.
Further, can also install the liquid level detection sensor in the circulation ink horn 600, the liquid level detection sensor can detect the liquid level in the circulation ink horn 600, when the ink reachd the liquid level detection sensor detection position, can discharge the ink from circulation ink horn 600 into ink horn subassembly 100, in order to realize the better circulation effect of ink, simultaneously, can install the circulating pump between circulation ink horn 600 and ink horn subassembly 100, so that the better flow of ink, and install the filter between circulation ink horn 600 and circulating pump, for the impurity of filtration circulation ink, prevent to further bring impurity into in the ink horn subassembly 100.
Further, the positive pressure circuit 320 may include a main pipe 321 and two branch pipes 322, one end of each of the two branch pipes 322 may be connected to the main pipe 321, the other end of one branch pipe 322 may be connected to the gas switching valve 330, and the other end of the other branch pipe 322 may be connected between the liquid outlet and the third valve body 700. Under the circumstances, in the process of discharging the maintenance liquid or the ink, through the design of the branch pipeline 322, not only the maintenance liquid or the ink at the nozzle can be cleaned, but also the maintenance liquid or the ink at the liquid outlet can be cleaned, so that a better maintenance effect can be realized on the nozzle 420, and the ink-jet effect can be ensured. In this case, of course, the third valve body 700 is in a closed state so that the positive pressure in the branch line 322 passes through the liquid outlet.
In the embodiment of the present invention, the circulation ink box 600 may be provided with a circulation negative pressure tube 800, and the circulation negative pressure tube 800 may be used to control the negative pressure in the circulation ink box 600, so as to achieve a better ink circulation effect. Of course, the negative pressure applied to the circulation ink cartridge 600 by the circulation negative pressure pipe 800 may be greater than the negative pressure of the head ink cartridge 400, thereby making the ink circulation effect better.
Based on the printing head system disclosed by the embodiment of the invention, the embodiment of the invention also discloses 3D printing equipment, which comprises the printing head system disclosed by any embodiment.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. A printhead system comprising a cartridge assembly (100), a printhead maintenance assembly (200), a pressure regulation assembly (300) and a printhead assembly (400), the cartridge assembly (100) and the printhead maintenance assembly (200) each being in communication with the printhead assembly (400), the pressure regulation assembly (300) comprising a negative pressure loop (310) and a positive pressure loop (320), the negative pressure loop (310) and the positive pressure loop (320) each being in communication with the printhead assembly (400), when in a first state, purging ink from the printhead assembly (400), and the printhead maintenance assembly (200) providing a maintenance fluid into the printhead assembly (400); when in the second state, the maintenance liquid in the spray head assembly (400) is cleaned, the ink box assembly (100) supplies ink to the spray head assembly (400) to start printing, and the pressure adjusting assembly (300) is used for providing positive pressure and negative pressure to the spray head assembly (400).
2. The printhead system of claim 1, further comprising a fluid switching valve (500), the cartridge assembly (100) and the head maintenance assembly (200) each communicating with the head assembly (400) through the fluid switching valve (500).
3. The printhead system of claim 2 wherein the nozzle head maintenance assembly (200) includes a maintenance fluid chamber (210), a first fluid pump (220), and a first solenoid valve (230) in serial communication.
4. The printhead system of claim 2 wherein the cartridge assembly (100) includes an ink reservoir chamber (110), a second liquid pump (120), and a second solenoid valve (130) in communication.
5. The printhead system of claim 4, wherein the cartridge assembly (100) further comprises a degassing member (140), the degassing member (140) communicating between the second solenoid valve (130) and the liquid switching valve (500).
6. The printhead system of claim 1, the pressure adjustment assembly (300) further comprising a gas switching valve (330), the negative pressure circuit (310) and the positive pressure circuit (320) communicating with the showerhead assembly (400) through the gas switching valve (330).
7. The printhead system of claim 6, further comprising a circulation cartridge (600), wherein the head assembly (400) comprises an ink supply chamber (410) and a head (420), the head (420) has a liquid inlet, a liquid outlet and a nozzle which are communicated, the liquid inlet is communicated with the ink supply chamber (410), the liquid outlet is communicated with one end of the circulation cartridge (600), a third valve body (700) is arranged between the liquid outlet and the circulation cartridge (600), and the other end of the circulation cartridge (600) is communicated with the cartridge assembly (100).
8. The printhead system according to claim 7, wherein the positive pressure circuit (320) comprises a main pipe (321) and two branch pipes (322), one end of each of the two branch pipes (322) is communicated with the main pipe (321), the other end of one of the branch pipes (322) is communicated with the gas switching valve (330), and the other end of the other branch pipe (322) is communicated between the liquid outlet and the third valve body (700).
9. The print head system according to claim 7, wherein the circulation ink box (600) is provided with a circulation negative pressure pipe (800), and the circulation negative pressure pipe (800) is used for controlling the negative pressure in the circulation ink box (600).
10. A 3D printing device, characterized by comprising a print head system according to any of claims 1 to 9.
CN202210596003.0A 2022-05-30 2022-05-30 Print head system and 3D printing equipment Pending CN114986892A (en)

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Application Number Priority Date Filing Date Title
CN202210596003.0A CN114986892A (en) 2022-05-30 2022-05-30 Print head system and 3D printing equipment

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Application Number Priority Date Filing Date Title
CN202210596003.0A CN114986892A (en) 2022-05-30 2022-05-30 Print head system and 3D printing equipment

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CN114986892A true CN114986892A (en) 2022-09-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618728A1 (en) * 1987-07-31 1989-02-03 Ricard Claude Method for preventing blocking of the ink injection nozzle of an ink jet printer and printers implementing this method
CN106853689A (en) * 2017-01-19 2017-06-16 宁夏共享模具有限公司 The positive/negative-pressure ink feeding system and its method of work of a kind of 3D printing equipment
CN206856289U (en) * 2017-06-23 2018-01-09 南京中彩九鼎数码科技有限公司 A kind of circulation ink system for being exclusively used in colored glazed glass digit inkjet printer
US20190016056A1 (en) * 2017-07-14 2019-01-17 Mimaki Engineering Co., Ltd. Shaping device, shaping method
CN113650299A (en) * 2021-07-29 2021-11-16 共享智能铸造产业创新中心有限公司 Ink supply system for 3D printing equipment and printing head cleaning method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618728A1 (en) * 1987-07-31 1989-02-03 Ricard Claude Method for preventing blocking of the ink injection nozzle of an ink jet printer and printers implementing this method
CN106853689A (en) * 2017-01-19 2017-06-16 宁夏共享模具有限公司 The positive/negative-pressure ink feeding system and its method of work of a kind of 3D printing equipment
CN206856289U (en) * 2017-06-23 2018-01-09 南京中彩九鼎数码科技有限公司 A kind of circulation ink system for being exclusively used in colored glazed glass digit inkjet printer
US20190016056A1 (en) * 2017-07-14 2019-01-17 Mimaki Engineering Co., Ltd. Shaping device, shaping method
CN113650299A (en) * 2021-07-29 2021-11-16 共享智能铸造产业创新中心有限公司 Ink supply system for 3D printing equipment and printing head cleaning method

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Application publication date: 20220902