Positive pressure ink supply jet printing module for digital jet printing

Abstract

The utility model discloses a positive pressure ink supply jet printing module used for digital jet printing, which comprises an ink supply system and a plurality of nozzles, and is characterized in that the ink supply system comprises an ink barrel, an ink box, ink bags and a controller, the ink barrel is communicated with the ink box through a pump, the ink box is communicated with the plurality of ink bags through an ink supply pipeline, the ink bags are provided with the nozzles, and the nozzles are communicated with the controller through the controller. The ink box is provided with a pressure sensor, the ink supply pipeline is provided with an electromagnetic valve, and the pressure sensor, the pump and the electromagnetic valve are all connected with the controller. According to the utility model, stable ink pressure on the surface of the nozzle and timely ink supplement are effectively ensured.

Description

Technical Field

[0001] The utility model relates to an improved invention of digital inkjet printing technology, in particular to an improved invention of a positive pressure ink supply inkjet printing module for digital inkjet printing. Background Art

[0002] Most of the ordinary digital inkjet printing ink circuits adopt several modes such as circulation, negative pressure, and negative pressure ink sac. In some special usage occasions where the nozzle is installed in reverse, a positive pressure ink supply method is also required to ensure the stable ink pressure on the surface of the nozzle, and when the nozzle works and sprays ink, the ink supply system can timely supplement an appropriate amount of ink. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a positive pressure ink supply inkjet printing module for digital inkjet printing.

[0004] To solve the above technical problem, the utility model is implemented by adopting the following technical solution: the positive pressure ink supply inkjet printing module for digital inkjet printing includes an ink supply system and a plurality of nozzles, and is characterized in that: the ink supply system includes an ink bucket, an ink cartridge, an ink sac and a controller, the ink bucket is connected to the ink cartridge through a pump, the ink cartridge is connected to a plurality of ink sacs through an ink supply pipeline, the ink sacs are provided with the nozzles, the ink cartridge is provided with a pressure sensor, the ink supply pipeline is provided with a solenoid valve, and the pressure sensor, the pump and the solenoid valve are all connected to the controller.

[0005] The ink supply pipeline forms an ink branch through a group of three-way valves and two groups of five-way valves. Accordingly, the ink supply pipeline forms two first branches through the three-way valve, and the two first branches respectively form four second branches through the five-way valve, and the four second branches are respectively connected with ink sacs.

[0006] There are two or more ink supply pipelines.

[0007] The inkjet printing module has a Z-shaped frame structure, two rows of nozzles are distributed up and down in a staggered manner on the upper end surface of the frame, and a plurality of the inkjet printing modules can be spliced with each other along the inkjet printing width direction, and the nozzles between adjacent two inkjet printing modules are matched and connected.

[0008] The ink cartridge is also provided with a manual ink filling structure.

[0009] The pump is a peristaltic pump.

[0010] The beneficial effect of the utility model is that for the improved positive pressure ink supply inkjet printing module for digital inkjet printing, the controller accurately controls the ink inlet flow rate of the peristaltic pump according to the ink cartridge pressure fed back by the pressure sensor and the set pressure value to ensure the stable ink pressure on the surface of the nozzle, and when the nozzle works and sprays ink, the ink supply system can timely supplement an appropriate amount of ink; the outer shape of the inkjet printing module adopts a frame structure similar to the Z shape, and the same type of modules can be spliced without limitation on the left and right, and the inkjet printing width can be freely combined. Brief Description of the Drawings

[0011] The following further elaborates on the specific embodiments of the present utility model in conjunction with the attached drawings.

[0012] Figure 1 It is a structural schematic diagram of the present utility model.

[0013] Figure 2 It is a ink supply system diagram of the present utility model.

[0014] Figure 3 It is a splicing schematic diagram of the present utility model. Specific Embodiments

[0015] The attached drawings show the structure of the present utility model, and the following further explains its relevant details in conjunction with the attached drawings. In this embodiment, referring to the attached Figures 1-3 , this positive pressure ink supply and printing module for digital inkjet printing includes an ink supply system and a plurality of nozzles 1. The ink supply system includes an ink barrel 2, an ink cartridge 3, an ink sac 4 and a controller. The ink barrel 2 is connected to the ink cartridge 3 through a pump 7, that is, a pump 7 is provided on the pipeline connecting the ink barrel 2 to the ink cartridge 3. The ink cartridge 3 is connected to a plurality of ink sacs 4 through an ink supply pipeline 8. The ink sac 4 is provided with the nozzle 1. The ink cartridge 3 is provided with a pressure sensor 5, and the ink supply pipeline 8 is provided with a solenoid valve 6. The pressure sensor 5, the pump and the solenoid valve 6 are all connected to the controller. Among them, the controller is a conventional structure, which realizes signal reception and object control, and its specific structure will not be described in detail.

[0016] When the ink supply system of the present utility model works, the solenoid valve 6 is opened. The controller accurately controls the ink inlet flow rate of the pump 7 according to the pressure of the ink cartridge 3 fed back by the pressure sensor 5 and the set pressure value, pumps the ink in the ink barrel 2 to the ink cartridge 3, and the ink in the ink cartridge 3 is transmitted to the ink sac 4 under the action of pressure to ensure the stable ink pressure on the surface of the nozzle 1; when the nozzle 1 works and sprays ink, the ink supply system can timely supplement an appropriate amount of ink.

[0017] As a further improved specific embodiment, the ink supply pipeline 8 forms an ink branch through a group of three-way valves 9 and two groups of five-way valves 10. Accordingly, the ink supply pipeline 8 forms two first branches through the three-way valve 9, and the two first branches respectively form four second branches through the five-way valves 10. The four second branches are respectively connected to the ink sac 4 and supply one nozzle 1 for use; preferably, there are two or more ink supply pipelines 8. Taking two as an example, the ink supply for four nozzles 1 can be realized.

[0018] As a specific implementation of further improvement, the inkjet printing module has a Z-shaped frame structure. Two rows of nozzles 1 are staggeredly distributed on the upper end surface of the frame. A plurality of the inkjet printing modules can be spliced with each other along the inkjet printing width direction, and the nozzles 1 of adjacent two inkjet printing modules are matched and connected, that is, the adjacent nozzles also form an up-and-down stagger. In this way, the inkjet printing modules can be spliced with the same type of modules without restriction on the left and right, and the inkjet printing width can be freely combined as required. At the same time, the complete ink supply system and the nozzles 1 are integrated inside the module, and the module can be removed as a whole for installation and maintenance, effectively reducing the production cost and the stocking cost.

[0019] As a specific implementation of further improvement, a manual ink filling structure 11 is further provided on the ink cartridge 3. The manual ink filling structure 11 includes an ink filling port located at the top of the ink cartridge, a connecting pipe and a manual valve. When filling ink for the first time, the manual valve needs to be opened, and then the ink rises to the required height in the ink cartridge and then the valve is closed, so as to cooperate with the automatic ink supply of the ink supply system.

[0020] As a specific implementation of further improvement, the pump 7 is a peristaltic pump. A peristaltic pump is a liquid conveying device with controllable flow rate, and has advantages such as high conveying accuracy, strong corrosion resistance, small shearing effect, simple operation and easy maintenance.

[0021] In summary, the above are only the preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positive pressure inkjet printing module for digital printing, comprising an ink supply system and a plurality of nozzles, characterized in that: The ink supply system includes an ink barrel, an ink cartridge, an ink bag and a controller. The ink barrel is connected to the ink cartridge via a pump, the ink cartridge is connected to a plurality of ink bags via an ink supply pipeline, the ink bag is equipped with the nozzle, the ink cartridge is equipped with a pressure sensor, the ink supply pipeline is equipped with a solenoid valve, and the pressure sensor, pump and solenoid valve are all connected to the controller.

2. The positive pressure ink supply printing module for digital printing according to claim 1, characterized in that: The ink supply pipeline forms an ink branch through a group of three-way valves and two groups of five-way valves. The corresponding ink supply pipeline forms two first branches through the three-way valve, and the two first branches form four second branches through the five-way valves respectively. The four second branches are respectively connected to ink bags.

3. The positive pressure ink supply printing module for digital printing according to claim 1 or 2, characterized in that: The ink supply pipelines are provided with more than two.

4. The positive pressure ink supply printing module for digital printing according to claim 1, characterized in that: The printing module is a Z-shaped frame structure, and two rows of nozzles are staggered and distributed on the upper end surface of the frame. Several printing modules can be spliced ​​together along the printing format direction, and the nozzles of two adjacent printing modules are matched and connected.

5. The positive pressure ink supply printing module for digital printing according to claim 1, characterized in that: The ink cartridge is also provided with a manual ink adding structure.

6. The positive pressure ink supply printing module for digital printing according to claim 1, characterized in that: The pump is a peristaltic pump.

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