CN210970365U - Circulating ink supply device - Google Patents
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- CN210970365U CN210970365U CN201921581926.9U CN201921581926U CN210970365U CN 210970365 U CN210970365 U CN 210970365U CN 201921581926 U CN201921581926 U CN 201921581926U CN 210970365 U CN210970365 U CN 210970365U
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Abstract
The utility model discloses a circulation ink supply unit belongs to ink jet printer technical field, its main china ink bucket is provided with supplies china ink mouth and returns china ink mouth, supplies the china ink mouth to communicate circulation through the pipeline in proper order and supplies the china ink pump, supply the china ink buffering box, the china ink end of advancing of first differential pressure sensor and printer shower nozzle, returns the china ink mouth and communicates circulation in proper order and returns the china ink pump, return china ink buffering box, second differential pressure sensor and printer shower nozzle's play china ink end, the china ink end that advances of printer shower nozzle communicates printer shower nozzle holds to form circulation and supply the china ink. The control component is electrically connected with the circulating ink supply pump, the circulating ink return pump, the first differential pressure sensor and the second differential pressure sensor respectively. The technical scheme can effectively solve the technical problems of insufficient ink supply, unstable negative pressure and influence on printing speed during ink jet printing caused by low ink flow speed when negative pressure siphon ink supply and high-low negative pressure difference circulating ink supply are used in the industry.
Description
Technical Field
The utility model relates to an ink jet printer technical field, in particular to circulation ink supply unit.
Background
In the digital printing industry, the ink supply method currently used is as follows: the method comprises the following steps of firstly, carrying out negative pressure siphon ink supply; ink is pumped into a sealed container through an ink supply pump, the container needs to be higher than a spray head, the ink in the container is extruded to flow down the spray head through a pipeline, and the gravity of the ink is sucked through negative pressure to realize printing. Because the ink siphon originally is not fast enough to supply, the gravity of ink is pulled up through the negative pressure, and the ink flow becomes slower, therefore, printing speed is very slow at the printing in-process, can not realize the fastest speed and print, simultaneously, the difference of the volume of spouting out of shower nozzle in the printing process leads to the negative pressure fluctuation unstability easily, and the negative pressure height is easily absorbed the air from the orifice back, and the low ink of negative pressure is easily followed the orifice and is dripped out to seriously influence printing. In the second mode, high-low negative pressure difference circulation ink supply is performed; the ink is pumped into a container of a circulating inlet of the spray head through two sealed containers which need to be higher than the spray head, the container of the circulating inlet of the spray head and the container of a circulating outlet of the spray head are sucked through negative pressure, the negative pressure of the container of the circulating inlet of the spray head needs to be lower than that of the circulating outlet of the spray head, the ink flows from the circulating inlet of the spray head to the circulating outlet through the negative pressure difference between the inlet and the outlet of the spray head, and the ink drop gravity of a spray hole is pulled through the negative pressure difference between the high and the low to realize printing. When the ink in the container at the circulating inlet is reduced to a liquid level sensing point, the ink needs to be added into the container through an external ink pump, negative pressure fluctuation is easy to be serious in the intermittent and frequent ink adding process, and when the ink in the container at the circulating outlet reaches a liquid level sensing high point, the ink needs to be discharged through the external ink pump, negative pressure fluctuation is easy to be serious in the frequent and intermittent ink discharging process, meanwhile, the negative pressure at the inlet and the outlet of the nozzle is unstable due to the fact that the negative pressure at the inlet and the outlet of the nozzle is suddenly high and low in the printing process, the negative pressure value at the inlet and the outlet cannot be too high, the ink circulating flow rate is very low, and therefore the ink discharging amount of the nozzle in the rapid printing process is larger than the ink circulating.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a circulation ink feed mechanism, it aims at solving in the trade and uses negative pressure siphon to supply ink and when the poor circulation of height negative pressure supplies ink because the ink velocity of flow is slow and lead to supplying ink when the inkjet is printed not enough, the unstable and technical problem who influences the printing speed of negative pressure.
In order to achieve the above object, the present invention provides a circulating ink supply device, which comprises a control assembly, a main ink barrel, an ink supply buffer box, an ink return buffer box, a circulating ink supply pump, a circulating ink return pump, a first differential pressure sensor and a second differential pressure sensor; the main ink barrel is provided with an ink supply port and an ink return port, the ink supply port is sequentially communicated with the circulating ink supply pump, the ink supply buffer box, the first differential pressure sensor and an ink inlet end of the printer nozzle, the ink return port is sequentially communicated with the circulating ink return pump, the ink return buffer box, the second differential pressure sensor and an ink outlet end of the printer nozzle, and the ink inlet end of the printer nozzle is communicated with the ink outlet end of the printer nozzle to form circulating ink supply; the control assembly is electrically connected with the circulating ink supply pump, the circulating ink return pump, the first differential pressure sensor and the second differential pressure sensor respectively.
Optionally, a liquid level sensor is arranged in the main ink barrel, and the liquid level sensor is electrically connected with the control assembly.
Optionally, the main ink tank is further provided with an ink adding port, the ink adding port is communicated with an ink adding pump, and the ink adding pump is electrically connected with the control assembly.
Optionally, the main ink barrel is further provided with an ink discharge port, the ink discharge port is communicated with an ink discharge pump, and the ink discharge pump is electrically connected with the control assembly.
Optionally, a heater is disposed on the main ink barrel, and the heater is electrically connected to the control assembly.
Optionally, a temperature sensor is further disposed on the main ink barrel, and the temperature sensor is electrically connected to the control assembly.
Optionally, the circulating ink supply device further includes a diaphragm solenoid valve, the diaphragm solenoid valve is disposed between the ink supply port of the main ink tank and the circulating ink supply pump, and the diaphragm solenoid valve is electrically connected to the control assembly.
Optionally, the control assembly includes a main control board and a secondary control board, the secondary control board is disposed adjacent to the first differential pressure sensor and the second differential pressure sensor, the first differential pressure sensor and the second differential pressure sensor are electrically connected to the main control board through the secondary control board, and the main control board is further electrically connected to the circulating ink supply pump and the circulating ink return pump.
Optionally, the circulating ink supply device further comprises a nozzle heater and a nozzle temperature sensor, the nozzle heater and the nozzle temperature sensor are respectively arranged on the printer nozzle, and the nozzle heater and the nozzle temperature sensor are respectively electrically connected with the main control panel through the secondary control panel.
The utility model provides a circulation ink supply unit, its main china ink bucket are provided with and supply the china ink mouth and return the china ink mouth, supply the china ink mouth to communicate circulation in proper order and supply the china ink pump, supply the china ink end of advancing of supplying china ink buffer box, first differential pressure sensor and print head, return the china ink mouth and communicate circulation in proper order and return the china ink pump, return china ink buffer box, second differential pressure sensor and print head's play china ink end, print head's the china ink end that advances of end intercommunication print head to form the circulation and supply the china ink. When the ink jet printer works, the circulating ink supply pump is used for filling ink in the circulating pipeline and the printer nozzle. The ink supply buffer box is mainly used for stabilizing the fluctuation of the ink pressure during ink supply and ensuring the stable pressure of the ink supplied to the printer nozzle. The ink return buffer box is mainly used for stabilizing the fluctuation of ink pressure during ink return, so that the stable pressure of the ink recovered from a printer nozzle is ensured, after a circulation pipeline and the ink of the printer nozzle are filled, the first pressure difference sensor and the second pressure difference sensor respectively detect the pressure of an ink inlet end and an ink outlet end of the printer nozzle and the flow of the ink passing through the nozzle in real time, the detected pressure value and the detected flow are fed back to the control assembly in real time, the control assembly adjusts the rotating speed of the circulating ink supply pump and the circulating ink return pump according to the preset pressure value (the pressure difference generation principle is that the rotating speed of the circulating ink supply pump is relatively slower than that of the circulating ink return pump, the ink flow speed is different according to the different rotating speeds of the circulating ink supply pump and the circulating ink return pump), and further controls the flow speed of the ink flowing into the nozzle and the ink flowing out of the nozzle, so as to form a pressure difference value, and then effectively stabilize the pressure difference of the spray head during ink-jet printing and realize the stable control of the ink-jet quantity and flow rate of the spray head, and finally, the aim of improving the printing speed of the ink-jet printer by times or more efficiently is achieved. Therefore, the circulating ink supply device can effectively solve the technical problems of insufficient ink supply, unstable negative pressure and influence on printing speed during ink jet printing caused by low ink flow speed when negative pressure siphon ink supply and high-low negative pressure difference circulating ink supply are used in the industry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of an overall structure of a circulating ink supply device according to an embodiment of the present invention.
Fig. 2 is another angle structure diagram of the circulation ink supply device shown in fig. 1.
Fig. 3 is a block diagram of electrical connection of the circulating ink supply apparatus shown in fig. 1.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides a circulating ink supply apparatus 100, where the circulating ink supply apparatus 100 includes a control component 110, a main ink barrel 120, an ink supply buffer box 130, an ink return buffer box 140, a circulating ink supply pump 150, a circulating ink return pump 160, a first differential pressure sensor 170, and a second differential pressure sensor 180. The main ink tank 120 is provided with an ink supply port and an ink return port, the ink supply port is sequentially communicated with one end of a circulating ink supply pump 150, an ink buffer box 130, a first differential pressure sensor 170 and a printer head (not shown), the ink return port is sequentially communicated with an ink outlet end of the circulating ink return pump 160, the ink return buffer box 140, a second differential pressure sensor 180 and the printer head, and an ink inlet end of the printer head is communicated with an ink outlet end of the printer head to form circulating ink supply. The control assembly 110 is electrically connected to the circulating ink supply pump 150, the circulating ink return pump 160, the first differential pressure sensor 170, and the second differential pressure sensor 180, respectively.
In the present embodiment, as shown in fig. 1 to 3, a liquid level sensor 121 is disposed in the main ink tank 120, and the liquid level sensor 121 is electrically connected to the control unit 110. The main ink tank 120 is further provided with an ink adding port, the ink adding port is communicated with an ink adding pump 191, and the ink adding pump 191 is electrically connected with the control component 110. The main ink barrel 120 is further provided with an ink discharge port, the ink discharge port is communicated with an ink discharge pump 192, and the ink discharge pump 192 is electrically connected with the control component. The liquid level sensor 121 can monitor the liquid level height of the ink in the main ink barrel 120 in real time, the ink adding pump 191 automatically adds the ink into the main ink barrel 120, and the ink is lacking (according to the monitoring data of the liquid level sensor 121) and is automatically supplemented, namely when the liquid level sensor 121 detects that the liquid level of the main ink barrel 120 is lower than the lower limit, the liquid level sensor 110 can give a signal to the ink adding pump 191 to add the ink to the main ink barrel 120; when the ink is added to the upper limit of the liquid level of the main ink tank 120, the control unit 110 controls the ink adding pump 191 to stop working, and the ink supply is stopped. The ink discharge pump 192 functions to discharge the ink recovered in the main ink tank 120 to a waste ink tank (not shown).
In addition, as shown in fig. 1 to 3, the main ink tank 120 is provided with a heater 122 and a temperature sensor 123, and the heater 122 and the temperature sensor 123 are respectively electrically connected to the control unit 110. Because the temperature difference of the operating environment of the inkjet printer is large due to the region, season, etc., the heater 122 and the temperature sensor 123 are required to keep the ink on the ink path at the operating temperature set by the control unit 110, so as not to affect the printing effect. The circulating ink supply device 100 further includes a diaphragm solenoid valve 193, the diaphragm solenoid valve 193 is disposed between the ink supply port of the main ink tank 120 and the circulating ink supply pump 150, and the diaphragm solenoid valve 193 is electrically connected to the control assembly 110. When the circulating ink path needs to discharge ink, the diaphragm solenoid valve 193 is opened to suck air, the circulating ink supply pump 150 does not suck ink from the ink supply buffer box 130, air is sucked from the diaphragm solenoid valve 193, ink in the circulating ink path is discharged through the sucked air and is recovered in the main ink tank 120, and the ink recovered in the main ink tank 120 is discharged to a waste ink tank (not shown) through the ink discharge pump 192.
As shown in fig. 3, the control assembly 110 in the present embodiment may specifically include a main control board and a sub-control board, the sub-control board is disposed adjacent to the first differential pressure sensor 170 and the second differential pressure sensor 180, the first differential pressure sensor 170 and the second differential pressure sensor 180 are respectively electrically connected to the main control board through the sub-control board, and the main control board is further electrically connected to the circulating ink supply pump 150 and the circulating ink return pump 160. Through the structural design of the secondary control board, the data of the first differential pressure sensor 170 and the second differential pressure sensor 180 can be read in real time and sent back to the main control board, so that the problem of data delay (large data delay fluctuation if the data delay fluctuation occurs) caused by too long wires is avoided. Since the ink heated by the main ink tank 120 flows to the printer head through the pipeline for a distance, and the temperature is lost, the temperature of the head is also required to be heated and detected, and therefore, the circulating ink supply apparatus 100 further includes a head heater and a head temperature sensor (not shown), the head heater and the head temperature sensor are respectively installed on the printer head, and the head heater and the head temperature sensor are respectively electrically connected to the main control board through the secondary control board.
The embodiment of the utility model provides a circulation ink supply unit, its main china ink bucket are provided with and supply the china ink mouth and return the china ink mouth, supply the china ink mouth to communicate circulation in proper order and supply the china ink pump, supply the china ink end of advancing of ink buffer box, first differential pressure sensor and print head, return the china ink mouth and communicate circulation in proper order and return the china ink pump, return china ink buffer box, second differential pressure sensor and print head's play china ink end, print head's the china ink end that advances of china ink end intercommunication print head to form the circulation and supply the china ink. When the ink jet printer works, the circulating ink supply pump is used for filling ink in the circulating pipeline and the printer nozzle. The ink supply buffer box is mainly used for stabilizing the fluctuation of the ink pressure during ink supply and ensuring the stable pressure of the ink supplied to the printer nozzle. The ink return buffer box is mainly used for stabilizing the fluctuation of ink pressure during ink return, so that the stable pressure of the ink recovered from a printer nozzle is ensured, after a circulation pipeline and the ink of the printer nozzle are filled, the first pressure difference sensor and the second pressure difference sensor respectively detect the pressure of an ink inlet end and an ink outlet end of the printer nozzle and the flow of the ink passing through the nozzle in real time, the detected pressure value and the detected flow are fed back to the control assembly in real time, the control assembly adjusts the rotating speed of the circulating ink supply pump and the circulating ink return pump according to the preset pressure value (the pressure difference generation principle is that the rotating speed of the circulating ink supply pump is relatively slower than that of the circulating ink return pump, the ink flow speed is different according to the different rotating speeds of the circulating ink supply pump and the circulating ink return pump), and further controls the flow speed of the ink flowing into the nozzle and the ink flowing out of the nozzle, so as to form a pressure difference value, and then effectively stabilize the pressure difference of the spray head during ink-jet printing and realize the stable control of the ink-jet quantity and flow rate of the spray head, and finally, the aim of improving the printing speed of the ink-jet printer by times or more efficiently is achieved. Therefore, the circulating ink supply device can effectively solve the technical problems of insufficient ink supply, unstable negative pressure and influence on printing speed during ink jet printing caused by low ink flow speed when negative pressure siphon ink supply and high-low negative pressure difference circulating ink supply are used in the industry.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (9)
1. A circulating ink supply device is characterized by comprising a control component, a main ink barrel, an ink supply buffer box, an ink return buffer box, a circulating ink supply pump, a circulating ink return pump, a first differential pressure sensor and a second differential pressure sensor; the main ink barrel is provided with an ink supply port and an ink return port, the ink supply port is sequentially communicated with the circulating ink supply pump, the ink supply buffer box, the first differential pressure sensor and an ink inlet end of the printer nozzle, the ink return port is sequentially communicated with the circulating ink return pump, the ink return buffer box, the second differential pressure sensor and an ink outlet end of the printer nozzle, and the ink inlet end of the printer nozzle is communicated with the ink outlet end of the printer nozzle to form circulating ink supply; the control assembly is electrically connected with the circulating ink supply pump, the circulating ink return pump, the first differential pressure sensor and the second differential pressure sensor respectively.
2. The circulating ink supply device according to claim 1, wherein a liquid level sensor is arranged in the main ink barrel, and the liquid level sensor is electrically connected with the control component.
3. The circulating ink supply device according to claim 1, wherein the main ink tank is further provided with an ink adding port, and the ink adding port is communicated with an ink adding pump, and the ink adding pump is electrically connected with the control assembly.
4. The circulating ink supply device according to claim 1, wherein the main ink tank is further provided with an ink discharge port, and the ink discharge port is communicated with an ink discharge pump, and the ink discharge pump is electrically connected with the control assembly.
5. The circulating ink supply device according to claim 1, wherein a heater is disposed on the main ink barrel, and the heater is electrically connected to the control assembly.
6. The circulating ink supply device according to claim 5, wherein a temperature sensor is further arranged on the main ink barrel, and the temperature sensor is electrically connected with the control component.
7. The circulating ink supply device according to claim 1, further comprising a diaphragm solenoid valve, wherein the diaphragm solenoid valve is disposed between the ink supply port of the main ink tank and the circulating ink supply pump, and the diaphragm solenoid valve is electrically connected to the control assembly.
8. The circulating ink supply device according to any one of claims 1 to 7, wherein the control assembly includes a main control board and a secondary control board, the secondary control board is disposed adjacent to the first differential pressure sensor and the second differential pressure sensor, the first differential pressure sensor and the second differential pressure sensor are electrically connected to the main control board through the secondary control board, respectively, and the main control board is further electrically connected to the circulating ink supply pump and the circulating ink return pump, respectively.
9. The circulating ink supply device of claim 8, further comprising a nozzle heater and a nozzle temperature sensor, wherein the nozzle heater and the nozzle temperature sensor are respectively mounted on the printer nozzle, and the nozzle heater and the nozzle temperature sensor are respectively electrically connected to the main control board through the secondary control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581926.9U CN210970365U (en) | 2019-09-20 | 2019-09-20 | Circulating ink supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921581926.9U CN210970365U (en) | 2019-09-20 | 2019-09-20 | Circulating ink supply device |
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| CN210970365U true CN210970365U (en) | 2020-07-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721457A (en) * | 2020-12-23 | 2021-04-30 | 惠州市迪日科技发展有限公司 | Circulating ink supply system, ink-jet printing device and ink-jet printing equipment |
| CN113547845A (en) * | 2021-06-11 | 2021-10-26 | 深圳市润天智数字设备股份有限公司 | Ink supply method |
| CN114393929A (en) * | 2021-12-27 | 2022-04-26 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Ink-jet printing circulating ink supply negative pressure control system |
-
2019
- 2019-09-20 CN CN201921581926.9U patent/CN210970365U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721457A (en) * | 2020-12-23 | 2021-04-30 | 惠州市迪日科技发展有限公司 | Circulating ink supply system, ink-jet printing device and ink-jet printing equipment |
| CN113547845A (en) * | 2021-06-11 | 2021-10-26 | 深圳市润天智数字设备股份有限公司 | Ink supply method |
| CN113547845B (en) * | 2021-06-11 | 2022-05-06 | 深圳市润天智数字设备股份有限公司 | Ink supply method |
| CN114393929A (en) * | 2021-12-27 | 2022-04-26 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Ink-jet printing circulating ink supply negative pressure control system |
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