Novel ink path system

Abstract

The utility model provides a novel ink path system which comprises a first ink box, a second ink box, an ink barrel and a backflow bottle. The ink barrel is connected with the first ink box through a first main pipeline, and a one-way valve, a first gear pump, a first filter and a first degassing lung are sequentially arranged on the first main pipeline; the ink barrel is connected with the second ink box through a second main pipeline; a second gear pump and a second electromagnetic valve are sequentially arranged on the second main pipeline; the backflow bottle is connected with the first ink box through a first negative pressure pipeline, a first adjusting valve and a third electromagnetic valve are sequentially arranged on the first negative pressure pipeline, and a first negative pressure sensor is located on the first negative pressure pipeline. The backflow bottle is connected with the second ink box through a second negative pressure pipeline, a second adjusting valve and a fourth electromagnetic valve are sequentially arranged on the second negative pressure pipeline, and a second negative pressure sensor is located on the second negative pressure pipeline. According to the novel ink path system, through the structure, ink bubbles can be effectively eliminated, and the printing effect is improved.

Description

Technical Field

[0001] The utility model relates to a novel ink path system, which is applied to the technical field of digital printing. Background Art

[0002] Currently, in the digital inkjet industry, in order to supply ink to the print head, a variety of sensors, pumps, valves, control systems, etc. are needed to form a negative pressure circulation ink system to ensure that the print heads connected to the system receive a continuous supply of ink and ensure the normal operation of the print head system.

[0003] The existing ink circuit system consists of two rectangular ink cartridges, each approximately half-filled with ink. The liquid level inside the cartridges is determined by two float switches, which activate and deactivate the ink supply and circulation pumps, respectively. The pumps' activation and deactivation cause significant pressure fluctuations inside the cartridges, affecting the nozzle iris pressure. To mitigate this effect, each channel requires two large negative pressure tanks. Negative pressure control and ink circuit operation are two independent systems. Failures in either system result in a lack of timely protection. Furthermore, pump damage is not promptly reported, impacting customer experience. Pulling the channel can easily cause ink to slosh inside the cartridge, potentially introducing air bubbles into the printhead and affecting printhead health. This compromises ink flow within the printhead, impacting continuous printing.

[0004] Therefore, it is necessary to design a new ink path system to overcome the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a new ink path system that can effectively eliminate ink bubbles and improve printing effects.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a novel ink circuit system, comprising a first ink cartridge, a second ink cartridge, an ink barrel and a reflux bottle;

[0008] The ink barrel is connected to the first ink cartridge via a first main line, and a one-way valve, a first gear pump, a first filter, and a first degassing lung are sequentially arranged on the first main line;

[0009] A first solenoid valve is provided on the connecting pipe between the first ink cartridge and the second ink cartridge;

[0010] The ink barrel and the second ink cartridge are connected via a second main line, and a second gear pump and a second solenoid valve are sequentially arranged on the second main line;

[0011] The first ink cartridge and the second ink cartridge are both connected to a nozzle; a first liquid level sensor and a first negative pressure sensor are provided in the first ink cartridge; a second liquid level sensor and a second negative pressure sensor are provided in the second ink cartridge;

[0012] The reflux bottle is connected to the first ink cartridge via a first negative pressure pipeline, a first regulating valve and a third solenoid valve are sequentially provided on the first negative pressure pipeline, and the first negative pressure sensor is located on the first negative pressure pipeline;

[0013] The reflux bottle is connected to the second ink cartridge through a second negative pressure pipeline, on which a second regulating valve and a fourth solenoid valve are sequentially arranged, and the second negative pressure sensor is located on the second negative pressure pipeline; the reflux bottle is connected to a second degassing lung.

[0014] Furthermore, the first ink cartridge includes a first ink tube and a first buffer tank, the level of the first buffer tank is higher than the level of the first ink tube; the first liquid level sensor is located in the first buffer tank, and the first ink tube is connected to the printhead.

[0015] Furthermore, the second ink cartridge includes a second ink tube and a second buffer tank, the level of the second buffer tank is higher than that of the second ink tube; the second liquid level sensor is located in the second buffer tank, and the second ink tube is connected to the printhead.

[0016] Furthermore, a branch pipe is provided between the first filter and the second ink cartridge, and a butterfly filter is provided on the branch pipe.

[0017] Furthermore, the first negative pressure pipeline and the second negative pressure pipeline are respectively connected to the positive pressure device through a solenoid valve.

[0018] Furthermore, the first negative pressure pipeline is connected to the third regulating valve via a solenoid valve, and the third regulating valve is connected to the first air filter.

[0019] Furthermore, the second negative pressure pipeline is connected to a fourth regulating valve via a solenoid valve, and the fourth regulating valve is connected to a second air filter.

[0020] The utility model has the following beneficial effects:

[0021] The novel ink path system provided by the utility model is provided with a first main path, a second main path, a first negative pressure path, a second negative pressure path and corresponding components, so that the pressure inside the ink path system can be dynamically balanced and controlled. If any problem occurs in any one of the parts, timely reminders and protection can be given; at the same time, it can effectively eliminate ink bubbles and improve printing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of a novel ink path system provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, the present invention provides a novel ink system, including a first ink cartridge 300, a second ink cartridge 400, an ink barrel 100, and a reflux bottle 200. The first ink cartridge 300 includes a first ink tube 302 and a first buffer tank 301, the first buffer tank 301 being higher than the first ink tube 302. The second ink cartridge 400 includes a second ink tube 402 and a second buffer tank 401, the second buffer tank 401 being higher than the second ink tube 402. By providing the buffer tanks, the liquid level inside the entire ink cartridge can be effectively adjusted.

[0026] like Figure 1 As shown, the ink barrel 100 and the first ink cartridge 300 are connected via a first main line. The first main line is sequentially provided with a one-way valve 1, a first gear pump 2, a first filter 3, and a first degassing lung 4. A branch line is provided between the first filter 3 and the second ink cartridge 400, and a butterfly filter 6 is installed on the branch line. The gear pump is used to provide power to transfer the ink from the ink barrel 100 to the ink cartridge. The first degassing lung 4 is connected to a large negative pressure system.

[0027] like Figure 1 As shown, the first ink cartridge 300 and the second ink cartridge 400 are separately connected via a connecting pipe. A first solenoid valve 10 is provided on the connecting pipe and is in a normally open state.

[0028] like Figure 1As shown, the ink barrel 100 is connected to the second ink cartridge 400 via a second main line, on which a second gear pump 8 and a second solenoid valve 9 are sequentially provided, and the solenoid valve is in a normally open state.

[0029] like Figure 1 As shown, the first ink cartridge 300 and the second ink cartridge 400 are both connected to a printhead 500. The first ink cartridge 300 is equipped with a first liquid level sensor 5 and a first negative pressure sensor, while the second ink cartridge 400 is equipped with a second liquid level sensor 7 and a second negative pressure sensor. Specifically, the first liquid level sensor 5 is located in the first buffer tank 301, and the first ink tube 302 is connected to the printhead 500. The second liquid level sensor 7 is located in the second buffer tank 401, and the second ink tube 402 is connected to the printhead 500.

[0030] The reflux bottle 200 is connected to the first ink cartridge 300 through a first negative pressure pipeline, on which a first regulating valve 11 and a third solenoid valve 12 are sequentially provided, and the first negative pressure sensor is located on the first negative pressure pipeline; the reflux bottle 200 is connected to the second ink cartridge 400 through a second negative pressure pipeline, on which a second regulating valve 16 and a fourth solenoid valve 17 are sequentially provided, and the second negative pressure sensor is located on the second negative pressure pipeline; the reflux bottle 200 is connected to a second degassing lung 22; the reflux bottle 200 is also connected to a large negative pressure.

[0031] The first negative pressure pipeline and the second negative pressure pipeline are respectively connected to the positive pressure device 23 through a solenoid valve 21. The positive pressure device 23 is used to provide positive pressure and is a common device, which will not be described here.

[0032] Furthermore, the first negative pressure line is connected to a third regulating valve 14 via a solenoid valve 13, and the third regulating valve 14 is connected to a first air filter 15. The second negative pressure line is connected to a fourth regulating valve 19 via a solenoid valve 18, and the fourth regulating valve 19 is connected to a second air filter 20.

[0033] Among them, the liquid level sensor, gear pump, and negative pressure sensor are all controlled by an intelligent PID controller. Specifically, the first liquid level sensor 5 in the first ink cartridge 300 will adjust the speed of the ink supply gear pump according to the set liquid level height through PID. The negative pressure sensor between the two ink cartridges will automatically adjust the negative pressure value of the two ink cartridges according to the set value, and then flow through the nozzle 500 to the second ink cartridge 400 according to the negative pressure difference. The second liquid level sensor 7 in the middle of the second ink cartridge 400 will adjust the speed of the circulation gear pump according to the set liquid level height through PID, thereby achieving dynamic balance and control of the pressure inside the ink system. All components in this process are monitored, and any abnormality will immediately enter protection mode, thereby protecting the entire device.

[0034] To sum up, the new ink path system provided by the present invention is configured with a first main path, a second main path, a first negative pressure path, a second negative pressure path and corresponding components, so that the pressure inside the ink path system can be dynamically balanced and controlled. If any problem occurs on any side, timely reminders and protection can be given; at the same time, it can effectively eliminate ink bubbles and improve printing effects.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new ink path system, characterized in that: It includes a first ink cartridge, a second ink cartridge, an ink barrel and a reflux bottle; The ink barrel is connected to the first ink cartridge via a first main line, and a one-way valve, a first gear pump, a first filter, and a first degassing lung are sequentially arranged on the first main line; A first solenoid valve is provided on the connecting pipe between the first ink cartridge and the second ink cartridge; The ink barrel and the second ink cartridge are connected via a second main line, and a second gear pump and a second solenoid valve are sequentially arranged on the second main line; The first ink cartridge and the second ink cartridge are both connected to a nozzle; a first liquid level sensor and a first negative pressure sensor are provided in the first ink cartridge; a second liquid level sensor and a second negative pressure sensor are provided in the second ink cartridge; The reflux bottle is connected to the first ink cartridge via a first negative pressure pipeline, a first regulating valve and a third solenoid valve are sequentially provided on the first negative pressure pipeline, and the first negative pressure sensor is located on the first negative pressure pipeline; The reflux bottle is connected to the second ink cartridge through a second negative pressure pipeline, on which a second regulating valve and a fourth solenoid valve are sequentially arranged, and the second negative pressure sensor is located on the second negative pressure pipeline; the reflux bottle is connected to a second degassing lung.

2. The novel ink path system according to claim 1, characterized in that: The first ink cartridge includes a first ink tube and a first buffer tank. The level of the first buffer tank is higher than that of the first ink tube. The first liquid level sensor is located in the first buffer tank. The first ink tube is connected to the nozzle.

3. The novel ink path system according to claim 1, characterized in that: The second ink cartridge includes a second ink tube and a second buffer tank. The level of the second buffer tank is higher than that of the second ink tube. The second liquid level sensor is located in the second buffer tank. The second ink tube is connected to the printhead.

4. The novel ink path system according to claim 1, characterized in that: A branch pipe is provided between the first filter and the second ink cartridge, and a butterfly filter is provided on the branch pipe.

5. The novel ink path system according to claim 1, characterized in that: The first negative pressure pipeline and the second negative pressure pipeline are respectively connected to the positive pressure device through a solenoid valve.

6. The novel ink path system according to claim 1, characterized in that: The first negative pressure pipeline is connected to the third regulating valve via a solenoid valve, and the third regulating valve is connected to the first air filter.

7. The novel ink path system according to claim 1, characterized in that: The second negative pressure pipeline is connected to the fourth regulating valve via a solenoid valve, and the fourth regulating valve is connected to the second air filter.

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