WO2020134055A1 - 一种陶瓷喷墨打印机墨路系统 - Google Patents

一种陶瓷喷墨打印机墨路系统 Download PDF

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Publication number
WO2020134055A1
WO2020134055A1 PCT/CN2019/097667 CN2019097667W WO2020134055A1 WO 2020134055 A1 WO2020134055 A1 WO 2020134055A1 CN 2019097667 W CN2019097667 W CN 2019097667W WO 2020134055 A1 WO2020134055 A1 WO 2020134055A1
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Prior art keywords
ink
buffer tank
tube
way valve
cartridge
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PCT/CN2019/097667
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English (en)
French (fr)
Inventor
温干前
林森
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广东科达洁能股份有限公司
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Publication of WO2020134055A1 publication Critical patent/WO2020134055A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16502—Printhead constructions to prevent nozzle clogging or facilitate nozzle cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17596—Ink pumps, ink valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters 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
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems

Definitions

  • the invention relates to ceramic inkjet printing technology, in particular to a ceramic inkjet printer ink path system.
  • the existing ink path system is independently controlled according to one ink cartridge and one ink cartridge required by the nozzle, so it requires 2 sets of ink supply system, 2 sets of gas path system and 2 sets of control system to control the two cartridges in and out, so There are many parts and materials required, and the final cost is high, resulting in low market competitiveness;
  • the existing ink system is not fully utilized. It needs to be equipped with a circulating water cooling circuit board heat sink device, which increases the cost of the whole machine and the space occupied by the whole machine. Often, the temperature is too low due to poor cooling water control, which will cause the temperature of the heat sink of the circuit board to be too low, causing water droplets on the surface of the heat sink due to the temperature difference, which will short circuit the circuit board and increase the risk.
  • the ink path system must be redesigned to make the ink path system more simplified, easy to control, and reduce costs.
  • the invention provides an ink system for a ceramic inkjet printer, including an ink supply system, a circulation system, a gas system, and a control system; the control system is used to control the ink supply system, the circulation system, and the gas system.
  • the ink supply system includes an ink tank, an ink supply pump, and an ink supply tube; the ink supply pump communicates with the ink tank;
  • the circulation system includes a buffer tank, a circulation pump, an ink inlet ink cartridge, and an ink outlet ink cartridge ⁇ Circulation ink tube and nozzle;
  • the ink tank is in communication with the buffer tank;
  • the circulation pump is used to transfer the liquid in the buffer tank to the ink inlet ink cartridge via the circulation ink tube;
  • An inner ink tube is provided, the ink inlet ink cartridge communicates with the bottom of the inner ink tube, the ink outlet ink cartridge communicates with the bottom of the buffer tank, and an opening is provided on the top of the inner ink tube;
  • the circulating ink path system transfers the ink from the buffer tank to the ink inlet cartridge through the circulation pump, and then enters the inner ink tube in the buffer tank, overflows from the inner ink tube to the low level in the buffer tank;
  • the ink cartridges communicate with the bottom of the inner ink tube, the ink cartridges communicate with the bottom of the buffer tank, and the nozzles communicate with the ink cartridges and the ink cartridges, so,
  • the low liquid level of the inner ink tube and the buffer tank can produce a liquid level difference, and the pressure generated by this liquid level difference is equal to the pressure difference between the ink inlet ink cartridge and the ink outlet ink cartridge, so as to ensure the pressure at both ends of the nozzle, so that the ink is in The internal circulation of the nozzle, and ensure that the ink at the nozzle orifice is in a state of half moon bay.
  • the control system includes a circuit board, and a circuit board heat dissipation plate is provided on the circuit board;
  • the ink supply ink tube includes an outlet and a return port, both the outlet and the return port are in contact with the ink tank Connected, a first electromagnetic three-way valve is provided on the ink supply ink tube, the ink supply pump is provided upstream of the first electromagnetic three-way valve, the first electromagnetic three-way valve and the buffer tank Connected, the ink supply ink tube portion is provided on the circuit board heat dissipation plate. Since the outlet and return port of the ink supply ink tube are in communication with the ink tank, the ink supply system constitutes a circuit. The purpose of this circuit is to use the ink flow in this circuit to cool the circuit board heat sink and prevent ink precipitation.
  • the ink supply pump is provided upstream of the first electromagnetic three-way valve.
  • the so-called upstream means that the ink in the ink supply ink tube flows through the ink supply pump first and then through the first electromagnetic three-way valve.
  • the first electromagnetic three-way valve communicates with the buffer tank, so ink can not only circulate in the ink supply system but also supply ink to the buffer tank through the first electromagnetic three-way valve.
  • the first electromagnetic three-way valve is provided downstream of the heat dissipation plate of the circuit board.
  • the so-called downstream means that the ink flows through the circuit board heat dissipation plate and then through the first electromagnetic three-way valve, so whether the ink is circulated in the ink supply system or needs to be supplied to the buffer tank, the ink can flow through the circuit board Heat sink to cool the circuit board heat sink.
  • the circulation pump is in communication with the ink outlet ink cartridge, and a flow restriction valve is provided between the ink outlet ink cartridge and the circulation pump.
  • the circulating ink tube between the circulating pump and the ink inlet ink cartridge includes a main road and two branch branches, the two branch branches are respectively connected to the ink inlet ink cartridge and the ink outlet ink cartridge, and the ink From the circulation pump, it first flows through the main road, and then flows to the ink inlet ink cartridge and the ink outlet ink cartridge through two branches, and a limited flow valve is provided on the branch road connected to the ink outlet ink cartridge, so that the circulation pump A large amount of ink flowing out flows into the ink inlet ink cartridge, and a small amount flows into the ink outlet ink cartridge to ensure a certain amount of ink flow in the ink cartridge to prevent precipitation and increase the flow rate of the ink cartridge.
  • a three-way valve is provided between the first electromagnetic three-way valve and the ink tank; a second electromagnetic three-way valve is provided between the circulation pump and the ink inlet cartridge The through valve communicates with the second electromagnetic three-way valve.
  • the second electromagnetic three-way valve is switched to pump the ink in the circulating ink path system back into the ink tank.
  • a first filter is provided on the ink supply ink tube; a second filter is provided between the circulation pump and the ink inlet ink cartridge.
  • the first filter and the second filter can filter impurities in ink.
  • a first pressure sensor is provided on the ink supply ink tube; a second pressure sensor is provided between the buffer tank and the ink inlet ink cartridge.
  • the purpose of setting the first pressure sensor and the second pressure sensor is to be able to send a signal when the first filter and the second filter are clogged due to long-term operation, thereby reminding the user to replace the first filter and the second filter.
  • the gas circuit system includes a third pressure sensor, a vacuum pump, a process controller, and a solenoid valve; the third pressure sensor is disposed on the buffer tank, and the third pressure sensor is electrically connected to the process controller , The vacuum pump is electrically connected to the process controller and the solenoid valve, respectively.
  • the positive and negative pressures of the air source are provided by the vacuum pump.
  • the third pressure sensor connected to the buffer tank detects the air pressure value in the buffer tank, and then feeds back to the process controller.
  • the pressure value controls the speed of the vacuum pump.
  • the vacuum pump discharges the air in the buffer tank to the atmosphere through the solenoid valve to accurately control the pressure at both ends of the nozzle.
  • the buffer tank Positive pressure causes the nozzle to press ink regularly, the solenoid valve is energized and switched, and the vacuum pump draws air from the atmosphere and pumps it into the buffer tank, thereby forming a positive pressure in the tank.
  • the ink supply pump and the circulation pump are diaphragm pumps or gear pumps.
  • a liquid level photoelectric sensor is provided on the ink tank; a liquid level sensor is provided on the buffer tank, and the liquid level sensor is electrically connected to the first electromagnetic three-way valve.
  • the liquid level photoelectric sensor is used to detect the liquid level height in the ink tank. When the liquid level is too low, the liquid level photoelectric sensor issues an alarm to remind the user to replenish the ink in time.
  • the liquid level sensor is used to detect the liquid level height in the buffer tank When the height is too low, the liquid level sensor sends a signal to the first electromagnetic three-way valve, so that the ink in the ink supply system first flows through the first filter, and then injected into the buffer tank.
  • the ink flows through the heat dissipation plate of the circuit board, then passes through the first electromagnetic three-way valve, and then returns to the ink tank for continuous circulation.
  • the ink circuit system can use ink to keep the heat dissipation of the circuit board heat dissipation board, because the temperature of the heat dissipation board is too high, the circuit board will burn, and the temperature is too low, because the temperature difference causes water droplets on the surface of the heat dissipation board, and the circuit board will short .
  • the ink supply pump reaches a certain flow rate, it can prevent the ink from settling, thus eliminating the stirring motor on the ink tank.
  • the inner ink tube in the buffer tank is connected to the ink cartridge of the grinding port, and the buffer tank is connected to the ink cartridge of the ink outlet. Ink flows into the ink cartridge through the circulation pump, fills the inner ink tube, and then overflows into the buffer tank. This creates a difference in liquid level between the ink tube and the buffer tank, which is the difference in ink flow pressure required by the nozzle. Changed from the traditional two circulating ink system to one ink system.
  • the negative pressure generated by the vacuum pump is connected to the buffer tank through the solenoid valve, and the negative pressure in the buffer tank is detected by the pressure sensor, and the signal is fed back to the vacuum pump, so that the negative pressure in the tank is controlled in a normal state or during printing to prevent
  • the nozzle is dripping ink; when cleaning the nozzle or changing the ink, switch the solenoid valve to connect the positive pressure gas source into the tank to make the nozzle drip ink.
  • FIG. 1 is a schematic diagram of an ink system of a ceramic inkjet printer of the present invention.
  • an ink system of a ceramic inkjet printer includes an ink supply system, a circulation system, a gas system, and a control system (not shown in the figure), the control system is used to control the ink supply system ,
  • a circulation system and a gas path system the ink supply system includes an ink tank 1, an ink supply pump 2, and an ink supply ink tube 17, the ink tubes in the ink supply system are collectively called ink supply ink tubes, and the ink supply pump 2 is used to transport the liquid in the ink tank 1 to the ink supply ink tube 17, the ink supply ink tube 17 includes an outlet 22 and a return port 23, the outlet 22 and the return port 23 are both connected to the ink tank 1 is connected, so that the liquid flowing out of the outlet 22 can flow back into the ink tank 1 through the return port 23 to prevent the ink from settling,
  • the control system includes a circuit board heat dissipation plate 4, the circuit board heat dissipation plate 4 is provided in the The outer surface of the ink
  • the ink path system of the ink supply system designed in this way can use ink to keep the heat dissipation plate at a constant temperature, because the temperature of the heat dissipation plate is too high, the circuit board will burn, and the temperature is too low, because the temperature difference will cause the surface of the heat dissipation plate to boil, will The circuit board is short-circuited, and the ink supply pump 2 reaches a certain flow rate, which can prevent the ink from settling, thereby canceling the mixer on the ink tank 1.
  • the shape of the ink supply ink tube 17 disposed on the circuit board heat dissipation plate 4 can be set according to actual conditions. In order to have a good constant temperature effect, the ink supply ink tube 17 should be disposed on the circuit board heat dissipation plate 4 as much as possible .
  • the ink supply system is provided with a pressure sensor 5, a first electromagnetic three-way valve 6, a three-way valve 7, and a first filter 8.
  • the ink supply pump 2, a first pressure sensor 5, a first electromagnetic three-way valve 6, and The three-way valve 7 is connected in series and forms an ink supply circuit.
  • One end of the first electromagnetic three-way valve 6 communicates with the three-way valve 7, and the other end of the first electromagnetic three-way valve communicates with the buffer tank 9 Therefore, when the first electromagnetic three-way valve 6 is switched, the first electromagnetic three-way valve 6 communicates with the buffer tank 9 so that the ink supply system can supply ink into the buffer tank 9.
  • a first filter 8 is also provided on the ink supply tube between the first electromagnetic three-way valve 6 and the buffer tank 9, and when the filter 8 is clogged, the first pressure sensor 5 will send a signal, Remind to replace the first filter 8.
  • a liquid level photoelectric sensor 3 is provided on the ink tank 1. The liquid level photoelectric sensor 3 is used to detect the height of the liquid level in the ink tank. When the liquid level is too low, the liquid level photoelectric sensor issues an alarm to remind the user to promptly Replenish ink.
  • the ink supply pump 2 is provided upstream of the first electromagnetic three-way valve 6, the so-called upstream means that the ink in the ink supply ink tube 17 flows through the ink supply pump 2 first and then flows through the first electromagnetic three-way Valve 6.
  • the first electromagnetic three-way valve 6 communicates with the buffer tank 9, so ink can not only circulate in the ink supply system but also supply ink to the buffer tank through the first electromagnetic three-way valve 6 9.
  • the first electromagnetic three-way valve 6 is provided downstream of the heat dissipation plate 4 of the circuit board.
  • the so-called downstream means that the ink flows through the circuit board cooling plate 4 and then through the first electromagnetic three-way valve 6, so whether the ink is circulated in the ink supply system or needs to be supplied to the buffer tank, the ink can flow through
  • the circuit board heat dissipation plate 4 cools the circuit board heat dissipation plate.
  • the circulation system includes a buffer tank 9, a circulation pump 28, a second electromagnetic three-way valve 18, an ink inlet ink cartridge 13, an ink outlet ink cartridge 12, a nozzle 14, and an internal ink tube 24 is also provided in the buffer tank 9 ,
  • the ink tubes in the circulation system are collectively referred to as circulating ink tubes
  • the circulation pump 28 is used to deliver the liquid in the buffer tank to the circulation ink tubes
  • the circulating ink tube between the ink outlet ink cartridge 12 includes one end main path 25 and two branches 26, 27.
  • the branch 26 is used to connect the ink inlet ink cartridge 13 and the branch 27 is used to connect the ink outlet ink cartridge 12.
  • the main path 25 is provided with a second filter 21, a second electromagnetic three-way valve 18 and a second pressure sensor 19, and the ejection port 14 communicates with the ink inlet ink cartridge 13 and the ink outlet ink cartridge 12, respectively.
  • the ink inlet ink cartridge 13 communicates with the bottom of the inner ink tube 24, the ink outlet ink cartridge 12 communicates with the bottom of the buffer tank 9, and an opening is provided on the top of the inner ink tube 24 to feed ink
  • the ink flowing out of the ink cartridge 13 flows into the inner ink tube 24, and the ink in the inner ink tube 24 overflows into the buffer tank 9 when it is full, so there is a liquid level difference between the inner ink tube 24 and the buffer tank 9, this liquid
  • the pressure generated by the difference is equal to the pressure difference between the ink inlet cartridge 13 and the ink outlet cartridge 12, so there is a stable pressure at both ends of the nozzle 14 so that the ink can circulate in the nozzle 14, and ensure that the nozzle orifice at the
  • a second filter 21 and a second pressure sensor are also provided on the main road 25.
  • the second filter 21 is used to filter the ink in the main road 25.
  • the second pressure sensor 19 A signal is sent to remind the user to replace the second filter 21 in time.
  • One end of the second electromagnetic three-way valve 18 communicates with the trunk path 25, and the other end of the second electromagnetic three-way valve 18 communicates with the three-way valve 7.
  • the second electromagnetic three-way valve 18 is switched Through valve 18. Make it communicate with the three-way valve 7, so as to pump the ink in the circulating ink circuit system back into the ink tank 1.
  • a limited flow valve is also provided on the branch 27, so that a large amount of ink flowing out of the main path 25 flows into the ink inlet ink cartridge 13 and a small amount flows into the ink outlet ink cartridge 12, ensuring a certain amount of ink flow in the ink cartridge. Prevent precipitation and increase the flow of this cartridge.
  • the gas circuit system includes a third pressure sensor 20, a vacuum pump 11, a process controller 15, and a solenoid valve 16; the solenoid valve 16 is a five-position two-way solenoid valve, and the third pressure sensor 20 is provided on the buffer tank 9.
  • the third pressure sensor 20 is electrically connected to the process controller 15, and the vacuum pump 11 is electrically connected to the process controller 15 and the solenoid valve 16, respectively.
  • the positive and negative pressures of the air source are provided by the vacuum pump 11.
  • the third pressure sensor 20 connected to the buffer tank 9 detects the air pressure value in the buffer tank 9, and then feeds back to the process controller 15, the process
  • the controller 15 controls the rotation speed of the vacuum pump 11 according to the detected pressure value, and the vacuum pump 11 discharges the air in the buffer tank 9 to the atmosphere through the solenoid valve 16, thereby accurately controlling the pressure at both ends of the spray head 14, during the cleaning process of the spray head 14,
  • the positive pressure of the buffer tank 9 needs to be used to periodically press the ink, the solenoid valve 16 is energized and switched, and the vacuum pump 11 draws air from the atmosphere and pumps it into the buffer tank 9 to form the buffer tank 9 Positive pressure.
  • the circulation pump 28 and the ink supply pump 2 described above are diaphragm pumps or gear pumps.
  • a liquid level sensor 10 is also provided on the buffer tank 9.
  • the liquid level sensor 10 is used to detect the height of the liquid level in the buffer tank 9. When the height is too low, the liquid level sensor sends a signal to the first electromagnetic three-way valve 6 , So that the ink in the ink supply system first flows through the first filter 8 and then is injected into the buffer tank 9.
  • the design of the above gas circuit system can simplify the entire gas circuit system, and there is no need to connect the positive pressure gas source from the outside, which greatly reduces the gas source treatment device and the proportional valve, thereby reducing the cost.

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Abstract

一种陶瓷喷墨打印机墨路系统，包括供墨系统、循环系统、气路系统以及控制系统；供墨系统包括墨桶（1）、供墨泵（2）、供墨墨管（17）；循环系统包括缓冲罐（9）、循环泵（28）、进墨口墨盒（13）、出墨口墨盒（12）、循环墨管以及喷口（14）；墨桶（1）与缓冲罐（9）连通；在缓冲罐（9）内设置有内墨管（24），进墨口墨盒（13）与内墨管（24）的底部连通，出墨口墨盒（12）与缓冲罐（9）的底部连通。

Description

一种陶瓷喷墨打印机墨路系统 技术领域
本发明涉及陶瓷喷墨印刷技术，尤其涉及一种陶瓷喷墨打印机墨路系统。
背景技术
现在喷墨打印机墨路系统已发展了一段时间，已经比较成熟，并且行业竞争激烈。现有的喷墨打印机墨路系统具有如下缺点：
1.现有的墨路系统是根据喷头所需一个进墨盒，一个出墨盒进行独立控制，因此它需要2套供墨系统、2套气路系统及2套控制系统控制进出两个墨盒，所以所需部件材料非常多，最终成本高，导致市场竞争力低；
2.现在墨路系统需要有搅拌电机、加热棒、加热条等物料，这样增加整机风险，控制点及成本；
3.现有墨路系统并没有完全被利用。需要配一台循环水冷却电路板散热板装置，这样增加整机成本，也增加整机占用空间。而往往因为冷却水控制不好而导致温度过低，会引起电路板散热板温度过低，使其与外空气因为温差大使散热板表面产生水珠，会使电路板短路，增加风险。
4.为了精准控制喷头处压力及清洗喷头压墨需求，缓冲罐内需要的对负压大小控制及正负压切换。现有产品需要从外部接入正压气源，并且通过正压再产生负压，同时通过比例阀控制负压大小。这样设计使气路变得复杂，管路零件增加，也增加成本，
因此，在不影响喷墨功能基础上，必须对墨路系统进行重新设计，使墨路系统更加简化，容易控制，降低成本。
发明内容
本发明提供了一种陶瓷喷墨打印机墨路系统，包括供墨系统、循环系统、气路系统以及控制系统；所述控制系统用于控制所述供墨系统、循环系统以及气路系统，所述供墨系统包括墨桶、供墨泵、供墨墨管；所述供墨泵与所述墨桶通连通；所述循环系统包括缓冲 罐、循环泵、进墨口墨盒、出墨口墨盒、循环墨管以及喷口；所述墨桶与所述缓冲罐连通；所述循环泵用于将所述缓冲罐内的液体经由循环墨管输送至进墨口墨盒内；在所述循环泵内设置有内墨管，所述进墨口墨盒与所述内墨管的底部连通，所述出墨口墨盒与所述缓冲罐的底部连通，在所述内墨管的顶部设置有开口；所述喷口分别与所述进墨口墨盒以及所述出墨口墨盒连通；所述气路系统用于控制所述缓冲罐内的压力。
循环墨路系统是通过循环泵把墨水从缓冲罐内输送至进墨口墨盒内，然后进入缓冲罐内的内墨管，从内墨管内溢出至缓冲罐内的低液位；由于所述进墨口墨盒与所述内墨管的底部连通，所述出墨口墨盒与所述缓冲罐的底部连通，所述喷口分别与所述进墨口墨盒以及所述出墨口墨盒连通，所以，内墨管与缓冲罐的低液位能够产生液位差，并且此液位差所产生的压力等于进墨口墨盒与出墨口墨盒的压力差，从而来保证喷头两端的压力，使墨水在喷头内部循环，并保证喷头喷孔处的墨水处于一种半月湾的状态。
优选的，所述控制系统包括电路板，在所述电路板上设置有电路板散热板；所述供墨墨管包括出口和回流口，所述出口及所述回流口均与所述墨桶连通，在所述供墨墨管上设置有第一电磁三通阀，所述供墨泵设置在所述第一电磁三通阀的上游，所述第一电磁三通阀与所述缓冲罐连通，所述供墨墨管部分设置在所述电路板散热板上。由于供墨墨管的出口和回流口均与所述墨桶连通，所以所述供墨系统构成一个回路，此回路的目的是利用墨水在此回路里面流动从而冷却电路板散热板，以及防止墨水沉淀。
所述供墨泵设置在所述第一电磁三通阀的上游，所谓上游是指，所述供墨墨管内的墨水先流经供墨泵再流经第一电磁三通阀。所述第一电磁三通阀与所述缓冲罐连通，所以墨水既能够在所述供墨系统内进行内循环又能通过所述第一电磁三通阀供墨给所述缓冲罐。
优选的，所述第一电磁三通阀设置在所述电路板散热板的下游。所谓下游是指，墨水先流经电路板散热板再流经第一电磁三通阀，所以无论是墨水在供墨系统内进行内循环还是需要供墨给缓冲罐，墨水都能够流经电路板散热板，从而给电路板散热板降温。
优选的，所述循环泵与所述出墨口墨盒连通，并且在所述出墨口墨盒与所述循环泵之间设置有限流阀。进一步地，所述循环泵与所述进墨口墨盒之间的循环墨管包括一段主干路和两段支路，两段支路分别与所述进墨口墨盒和出墨口墨盒连通，墨水从循环泵内先流经主干路再通过两段支路流向所述进墨口墨盒和出墨口墨盒，在与所述出墨口墨盒连接的支路上设置有限流阀，从而从循环泵内流出的墨水大量流入所述进墨口墨盒，少量流入所述出墨口墨盒，保证此墨盒内有一定量的墨水流动，防止沉淀及加大此墨盒的流量。
优选的，在所述第一电磁三通阀与所述墨桶之间设置有三通阀；在所述循环泵与所述进墨口墨盒之间设置有第二电磁三通阀，所述三通阀与所述第二电磁三通阀连通。当需要清洗整个墨路系统时，切换第二电磁三通阀，把循环墨路系统中的墨水泵回墨桶内。
优选的，在所述供墨墨管上设置有第一过滤器；在所述循环泵与所述进墨口墨盒之间设置有第二过滤器。所述第一过滤器和所述第二过滤器能够过滤墨水中的杂质。
优选的，在所述供墨墨管上设置有第一压力传感器；在所述缓冲罐与所述进墨口墨盒之间设置有第二压力传感器。第一压力传感器和第二压力传感器设置的目的是当上述第一过滤器和第二过滤器因为长时间工作发生堵塞时能够发出信号，从而提醒用户更换第一过滤器和第二过滤器。
优选的，所述气路系统包括第三压力传感器、真空泵、过程控制器、电磁阀；所述第三压力传感器设置在缓冲罐上，所述第三压力传感器与所述过程控制器电性连接，所述真空泵分别与所述过程控制器及电磁阀电性连接。气源的正负压都由真空泵提供，在喷头正常工作中，连接到缓冲罐内的第三压力传感器检测到缓冲罐内的空气压力值，然后反馈给过程控制器，过程控制器根据检测到的压力值控制真空泵的转速，真空泵把缓冲罐内空气通过电磁阀排到大气中，从而对喷头两端压力进行精确控制，在喷头清洗过程中，为防止喷头打印过程中堵塞，需要给缓冲罐正压使喷头进行定时压墨，电磁阀通电切换，真空泵从大气吸气，泵入缓冲罐内，从而对罐内形成正压。
优选的，所述供墨泵和所述循环泵为隔膜泵或齿轮泵。
优选的，在所述墨桶上设置有液位光电传感器；在所述缓冲罐上设置有液位传感器，所述液位传感器与所述第一电磁三通阀电性连接。所述液位光电传感器用于检测墨桶内的液位高度，当液位过低时，液位光电传感器发出警报，提醒用户及时补充墨水，液位传感器用于检测缓冲罐内的液位高度，当高度过低时，液位传感器发出信号给第一电磁三通阀，使得供墨系统中的墨水先流经第一过滤器，然后注入缓冲罐内。
本发明的有益效果为：
1.在供墨系统中，墨水流经电路板散热板，然后经过第一电磁三通阀，再回流墨桶，不断循环。这样设计墨路系统既可以利用墨水使电路板散热板保持恒温作用，因为散热板温度过高，电路板会烧，而温度过低，因为温差使散热板表面产生水珠，会使电路板短路。并且供墨泵达到一定流量，便可以防止墨水沉淀，从而取消墨桶上的搅拌电机。
2.往进墨口墨盒供墨，并且尽可能加大缓冲罐空间，可以减少因频繁供墨造成的压力不 稳定，使喷头喷嘴处半月弯压力的稳定性增强，对外界抗干扰能力增强，提高了喷墨打印机长时间连续稳定工作的能力；
3.在缓冲罐内设计内墨管，内墨管与进磨口墨盒连接，而缓冲罐与出墨口墨盒连接。墨水通过循环泵流入进墨口墨盒，注满内墨管后才溢流入缓冲罐内，这样便形成墨管与缓冲罐间液位高度差，即为喷头所需墨水流动压力差，这样便可以从传统两套循环墨路系统更改为一套墨路系统。
4.利用真空泵所产生负压通过电磁阀接入到缓冲罐内，利用压力传感器检测缓冲罐内负压，把信号反馈到真空泵内，从而在正常状态或者打印时控制好罐内负压，防止喷头滴墨；在清洗喷头或者换墨水时，切换电磁阀，使罐内接入正压气源，使喷头滴墨。这样设计简化整个气路系统，也无需从外部接入正压气源，大大减少气源处理装置及比例阀，从而减低成本。
附图说明
图1为本发明一种陶瓷喷墨打印机墨路系统简图。
图中各附图标记所指代的技术特征如下：
1、墨桶；2、供墨泵；3、液位光电传感器；4、电路板散热板；5、第一压力传感器；6、第一电磁三通阀；7、三通阀；8、第一过滤器；9、缓冲罐；10、液位传感器；11、真空泵；12、出墨口墨盒；13、进墨口墨盒；14喷头；15、过程控制器；16、电磁阀；17、供墨墨管；18、第二电磁三通阀；19、第二压力传感器；20、第三压力传感器；21、第二过滤器；22、出口；23、回流口；24、内墨管；25、主干路；26、支路；27、支路；28、循环泵。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步说明：
如图1所示，一种陶瓷喷墨打印机墨路系统，包括供墨系统、循环系统、气路系统以及控制系统(图中未示出)，所述控制系统用于控制所述供墨系统、循环系统以及气路系统，所述供墨系统包括墨桶1、供墨泵2、供墨墨管17，所述供墨系统内的墨管统称为供墨墨管，所述供墨泵2用于将所述墨桶1内的液体输送至供墨墨管17内，所述供墨墨管17包括出 口22和回流口23，所述出口22和回流口23均与所述墨桶1连通，使得从所述出口22流出的液体能够通过回流口23回流到墨桶1内，防止墨水沉淀，所述控制系统包括电路板散热板4，所述电路板散热板4设置在所述供墨墨管17的外表面上，使得所述供墨墨管17部分设置在所述电路板散热板4上，所以当墨水在供墨墨管17内循环时，能够冷却电路板散热板4。这样设计的供墨系统的墨路系统即可以利用墨水使散热板保持恒温作用，因为散热板温度过高，电路板会烧，而温度过低，由于温差会使散热板表面产生水煮，会使电路板短路，并且供墨泵2达到一定流量，便可以防止墨水沉淀，从而取消墨桶1上的搅拌机。所述供墨墨管17设置在电路板散热板4上的形状可以根据实际情况设置，为了有良好的恒温作用，所述供墨墨管17应尽可能所的设置在电路板散热板4上。
在供墨系统上设置有压力传感器5和第一电磁三通阀6、三通阀7以及第一过滤器8，所述供墨泵2、第一压力传感器5第一电磁三通阀6以及三通阀7串联，并且形成一个供墨回路，所述第一电磁三通阀6的一端与所述三通阀7连通，所述第一电磁三通阀的另一端与所述缓冲罐9连通，所以当第一电磁三通阀6切换时，第一电磁三通阀6与所述缓冲罐9连通，从而所述供墨系统能够给所述缓冲罐9内供墨。在所述第一电磁三通阀6与所述缓冲罐9之间的供墨墨管上还设置有第一过滤器8，当过滤器8发生堵塞时，第一压力传感器5会发出信号，提醒更换第一过滤器8。并且在所述墨桶1上设置有液位光电传感器3，该液位光电传感器3用于检测墨桶内的液位高度，当液位过低时，液位光电传感器发出警报，提醒用户及时补充墨水。
所述供墨泵2设置在所述第一电磁三通阀6的上游，所谓上游是指，所述供墨墨管17内的墨水先流经供墨泵2再流经第一电磁三通阀6。所述第一电磁三通阀6与所述缓冲罐9连通，所以墨水既能够在所述供墨系统内进行内循环又能通过所述第一电磁三通阀6供墨给所述缓冲罐9。
优选的，所述第一电磁三通阀6设置在所述电路板散热板4的下游。所谓下游是指，墨水先流经电路板散热板4再流经第一电磁三通阀6，所以无论是墨水在供墨系统内进行内循环还是需要供墨给缓冲罐，墨水都能够流经电路板散热板4，从而给电路板散热板降温。
所述循环系统包括缓冲罐9、循环泵28，第二电磁三通阀18，进墨口墨盒13、出墨口墨盒12、喷口14，在所述缓冲罐9内还设置有内墨管24，所述循环系统内的墨管统称为循环墨管，所述循环泵28用于将所述缓冲罐内的液体输送至循环墨管内，所述循环泵28与所述进墨口墨盒13、出墨口墨盒12之间的循环墨管包括一端主干路25和两段支路26、27， 支路26用于连接进墨口墨盒13，支路27用于连接出墨口墨盒12，在所述主干路25上设置有第二过滤器21、第二电磁三通阀18以及第二压力传感器19，所述喷口14分别与所述进墨口墨盒13和出墨口墨盒12连通，所述进墨口墨盒13与所述内墨管24的底部连通，所述出墨口墨盒12与所述缓冲罐9的底部连通，在所述内墨管24的顶部设置有开口，从进墨口墨盒13内流出的墨水流入至内墨管24内，内墨管24内的墨水满后溢流至缓冲罐9内，所以内墨管24与缓冲罐9之间存在液位差，此液位差所产生的压力等于进墨口墨盒13与出墨口墨盒12之间的压力差，所以喷头14的两端有稳定的压力使得墨水能够在喷头14内循环，并保证喷头喷孔处的墨水处于一种半月湾的状态。这样便可以节省另一套循环墨路系统，使整套喷头循环墨路系统成本降低一半，最终使每一个墨路系统零件大大减少，重量也大大减轻。
在所述主干路25上还设置有第二过滤器21和第二压力传感器，第二过滤器21用于过滤主干路25内的墨水，当第二过滤器21发生堵塞时，第二压力传感器19发出信号提醒用户及时更换第二过滤器21。
第二电磁三通阀18的一端与所述主干路25连通，第二电磁三通阀18的另一端与所述三通阀7连通，当需要清洗循环墨路系统时，切换第二电磁三通阀18.使其与所述三通阀7连通，从而把循环墨路系统内的墨水泵回墨桶1内。
在支路27上还设置有限流阀，从而从主干路25内流出的墨水大量流入所述进墨口墨盒13，少量流入所述出墨口墨盒12，保证此墨盒内有一定量的墨水流动，防止沉淀及加大此墨盒的流量。
所述气路系统包括第三压力传感器20、真空泵11、过程控制器15、电磁阀16；电磁阀16为五位二通电磁阀，所述第三压力传感器20设置在缓冲罐上9，所述第三压力传感器20与所述过程控制器15电性连接，所述真空泵11分别与所述过程控制器15及电磁阀16电性连接。气源的正负压都由真空泵11提供，在喷头正常工作中，连接到缓冲罐9内的第三压力传感器20检测到缓冲罐9内的空气压力值，然后反馈给过程控制器15，过程控制器15根据检测到的压力值控制真空泵11的转速，真空泵11把缓冲罐9内空气通过电磁阀16排到大气中，从而对喷头14两端压力进行精确控制，在喷头14清洗过程中，为防止喷头14打印过程中堵塞，需要给缓冲罐9正压使喷头进行定时压墨，电磁阀16通电切换，真空泵11从大气吸气，泵入缓冲罐9内，从而对缓冲罐9内形成正压。
以上所述循环泵28和供墨泵2为隔膜泵或齿轮泵。
在所述缓冲罐9上还设置有液位传感器10，液位传感器10用于检测缓冲罐9内的液位高度，当高度过低时，液位传感器发出信号给第一电磁三通阀6，使得供墨系统中的墨水先流经第一过滤器8，然后注入缓冲罐9内。
上述气路系统的设计能够简化整个气路系统，也无需从外部接入正压气源，大大减少气源处理装置及比例阀，从而减低成本。
以上对本发明所提供的一种陶瓷喷墨打印机墨路系统实施例进行了详细阐述。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明的原理的前提下，还可以本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (10)

  1. 一种陶瓷喷墨打印机墨路系统，包括供墨系统、循环系统、气路系统以及控制系统；其特征在于：所述控制系统用于控制所述供墨系统、循环系统以及气路系统，所述供墨系统包括墨桶、供墨泵、供墨墨管；所述供墨泵与所述墨桶通连通；所述循环系统包括缓冲罐、循环泵、进墨口墨盒、出墨口墨盒、循环墨管以及喷口；所述墨桶与所述缓冲罐连通；所述循环泵用于将所述缓冲罐内的液体经由循环墨管输送至进墨口墨盒内；在所述循环泵内设置有内墨管，所述进墨口墨盒与所述内墨管的底部连通，所述出墨口墨盒与所述缓冲罐的底部连通，在所述内墨管的顶部设置有开口；所述喷口分别与所述进墨口墨盒以及所述出墨口墨盒连通；所述气路系统用于控制所述缓冲罐内的压力。
  2. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：所述控制系统包括电路板，在所述电路板上设置有电路板散热板；所述供墨墨管包括出口和回流口，所述出口及所述回流口均与所述墨桶连通，在所述供墨墨管上设置有第一电磁三通阀，所述供墨泵设置在所述第一电磁三通阀的上游，所述第一电磁三通阀与所述缓冲罐连通，所述供墨墨管部分设置在所述电路板散热板上。
  3. 如权利要求2所述的陶瓷喷墨打印机墨路系统，其特征在于：所述第一电磁三通阀设置在所述电路板散热板的下游。
  4. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：所述循环泵与所述出墨口墨盒连通，并且在所述出墨口墨盒与所述循环泵之间设置有限流阀。
  5. 如权利要求2所述的陶瓷喷墨打印机墨路系统，其特征在于：在所述第一电磁三通阀与所述墨桶之间设置有三通阀；在所述循环泵与所述进墨口墨盒之间设置有第二电磁三通阀，所述三通阀与所述第二电磁三通阀连通。
  6. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：在所述供墨墨管上设置有第一过滤器；在所述循环泵与所述进墨口墨盒之间设置有第二过滤器。
  7. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：在所述供墨墨管上设置有第一压力传感器；在所述缓冲罐与所述进墨口墨盒之间设置有第二压力传感器。
  8. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：所述气路系统包括第三压力传感器、真空泵、过程控制器、电磁阀；所述第三压力传感器设置在缓冲罐上，所述第三压力传感器与所述过程控制器电性连接，所述真空泵分别与所述过程控制器及电磁阀电性连接。
  9. 如权利要求1所述的陶瓷喷墨打印机墨路系统，其特征在于：在所述供墨泵和所述循 环泵为隔膜泵或齿轮泵。
  10. 如权利要求2所述的陶瓷喷墨打印机墨路系统，其特征在于：在所述墨桶上设置有液位光电传感器；在所述缓冲罐上设置有液位传感器，所述液位传感器与所述第一电磁三通阀电性连接。
PCT/CN2019/097667 2018-12-26 2019-07-25 一种陶瓷喷墨打印机墨路系统 WO2020134055A1 (zh)

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