Ink supply system

Abstract

The utility model relates to the technical field of printing, in particular to an ink supply system. Comprising an ink barrel, the ink barrel is communicated with an ink adding barrel, and the ink adding barrel is suitable for supplying ink to the ink barrel; the outer circulation ink path is suitable for enabling the ink to circulate between the ink barrel and the first ink box; the liquid level adjusting assembly is arranged on the outer circulation ink path; the pressure detection assembly is arranged on the outer circulation ink path; and the inner circulation ink path is suitable for enabling the ink to circulate among the ink barrel, the first ink box and the second ink box and supplying the ink to the spray head. When the outer circulation ink path normally operates, the speed of the outer circulation pump is in direct proportion to the pressure detected by the first pressure sensor, the higher the speed of the outer circulation pump is, the higher the hydraulic pressure of the pipeline is, the pressure value should be within a certain normal range, and when the read pressure is smaller than the normal range, whether the flow is sufficient needs to be checked. Whether the power of the external circulating pump is insufficient or whether the external circulating pump does not work is checked.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to an ink supply system. Background Art

[0002] The basic working principle of a printer is to first generate small ink droplets, and then use an inkjet head to guide the tiny ink droplets to the set position. The smaller the ink droplets, the clearer the printed image.

[0003] Existing printers cannot adjust the liquid level, or can only adjust the liquid level manually, and can only judge whether there is an abnormality in the external circulation ink circuit by observing the printing effect. Utility Model Content

[0004] Therefore, the utility model aims to overcome the technical problems in the prior art, thereby providing an ink supply system.

[0005] The utility model provides an ink supply system, comprising:

[0006] An ink barrel, the ink barrel is connected to an ink supply barrel, and the ink supply barrel is suitable for supplying ink to the ink barrel;

[0007] An external circulating ink circuit, adapted to allow ink to circulate between the ink barrel and the first ink cartridge;

[0008] A liquid level regulating component, arranged on the outer circulating ink path, suitable for regulating the liquid level of ink in the ink barrel;

[0009] A pressure detection component, arranged on the outer circulation ink circuit, suitable for detecting the pressure of the outer circulation ink circuit;

[0010] The internal circulation ink circuit is suitable for circulating the ink between the ink barrel, the first ink cartridge and the second ink cartridge, and supplying ink to the nozzle;

[0011] The controller, the outer circulation ink circuit, the liquid level adjustment component, the pressure detection component and the inner circulation ink circuit are all connected to the controller signal.

[0012] Furthermore, the external circulation ink circuit includes:

[0013] An external circulation pump, a first end of which is connected to the bottom end of the ink barrel;

[0014] A filter, a first end of which is in communication with the second end of the external circulation pump, and a second end of which is in communication with the first end of the first ink cartridge;

[0015] A controller, wherein the external circulation pump is connected to the controller signal;

[0016] Wherein, the second end of the first ink cartridge is connected to the ink barrel;

[0017] The circulation direction of the external circulation ink circuit is: the ink barrel, the external circulation pump, the filter, the first end of the first ink cartridge and the second end of the first ink cartridge.

[0018] Furthermore, the ink adding barrel supplies ink into the ink barrel through an ink supply pump, and the ink supply pump is connected to the controller signal.

[0019] Furthermore, the liquid level adjustment component comprises:

[0020] A liquid level sensor, disposed in the ink barrel and connected to the controller signal, adapted to obtain the ink liquid level in the ink barrel and transmit the ink liquid level to the controller;

[0021] The controller is provided with an ideal liquid level, and the controller compares the ink liquid level with the ideal liquid level. When the ink liquid level is lower than the ideal liquid level, the controller controls the ink supply pump to supply the ink in the ink adding barrel to the ink barrel until the ink liquid level is equal to the ideal liquid level.

[0022] When the ink is at an ideal liquid level, the ink in the first ink cartridge is connected to the ink in the ink barrel, and the ink liquid level in the first ink cartridge is equal to the ink liquid level in the ink barrel.

[0023] Furthermore, the running speed of the ink supply pump is positively correlated with the height difference between the ink liquid level and the ideal liquid level.

[0024] Furthermore, the pressure detection component includes:

[0025] The first pressure sensor is arranged between the external circulation pump and the filter, and is suitable for detecting the pressure in the pipeline connecting the external circulation pump and the filter.

[0026] Furthermore, the inner circulation ink circuit includes:

[0027] An internal circulation pump, wherein a first end of the internal circulation pump is in communication with a second end of the second ink cartridge, and a second end of the internal circulation pump is in communication with an ink barrel, wherein the second end of the second ink cartridge is in communication with ink in the second ink cartridge;

[0028] The first end of the second ink cartridge is in communication with the first end of the nozzle, and the second end of the nozzle is in communication with the third end of the first ink cartridge, wherein the third end of the first ink cartridge is in communication with the ink in the first ink cartridge;

[0029] The internal circulation pump and the nozzle are both connected to the controller signal;

[0030] The circulation direction of the inner circulation ink circuit is: ink barrel, outer circulation pump, filter, first end of the first ink cartridge, third end of the first ink cartridge, nozzle, second end of the second ink cartridge and inner circulation pump.

[0031] Furthermore, it also includes:

[0032] A second pressure sensor, the third end of the second ink cartridge is connected to the top of the ink barrel through a pipeline, the second pressure sensor is connected to the controller signal, and is suitable for obtaining the air pressure in the pipeline connecting the second ink cartridge and the ink barrel, wherein the third end of the second ink cartridge is connected to the top of the ink in the second ink cartridge.

[0033] Furthermore, it also includes:

[0034] A vacuum pump is connected to the top of the ink barrel.

[0035] Furthermore, the second pressure sensor and the vacuum pump are both connected to the controller signal.

[0036] The technical solution of the utility model has the following advantages:

[0037] The utility model provides an ink supply system, wherein the controller compares the ink level with the ideal level. When the ink level is lower than the ideal level, the controller controls the ink supply pump to supply the ink in the ink adding barrel to the ink barrel until the ink level is equal to the ideal level. The running speed of the ink supply pump is positively correlated with the height difference between the ink level and the ideal level, and the intelligent control of the running speed of the ink supply pump can be realized, the precise control of the ink level can be realized, and the reaction speed to the change of the ink level can be improved. When the external circulation ink circuit operates normally, the speed of the external circulation pump is in direct proportion to the pressure detected by the first pressure sensor. The greater the speed of the external circulation pump, the greater the hydraulic pressure of the pipeline, and the pressure value should be within a normal range. When the read pressure is less than the normal range, it is necessary to check whether the flow is sufficient, whether the power of the external circulation pump is insufficient, or whether the external circulation pump is not working; when the read pressure is greater than the normal range, it is necessary to check whether the external circulation ink circuit is blocked at the filter or other places. If the filter is blocked, the filter needs to be replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a schematic diagram of the structure of the utility model.

[0040] Description of reference numerals;

[0041] 1. Ink barrel; 2. Ink adding barrel; 3. First ink cartridge; 4. Second ink cartridge; 5. Printhead; 6. External circulation pump; 7. Filter; 8. Ink supply pump; 9. Liquid level sensor; 10. First pressure sensor; 11. Internal circulation pump; 12. Second pressure sensor; 13. Vacuum pump. DETAILED DESCRIPTION

[0042] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Example

[0047] like Figure 1 A specific embodiment of an ink supply system is shown, and the ink supply system includes:

[0048] An ink barrel 1, wherein the ink barrel 1 is connected to an ink supplying barrel 2, and the ink supplying barrel 2 is suitable for supplying ink to the ink barrel 1;

[0049] An external ink circulation circuit, adapted to allow ink to circulate between the ink barrel 1 and the first ink cartridge 3, wherein the external ink circulation circuit can prevent ink from settling and causing problems such as precipitation and stratification;

[0050] A liquid level regulating component, arranged on the outer circulating ink path, suitable for regulating the liquid level of the ink in the ink barrel 1;

[0051] A pressure detection component, arranged on the outer circulation ink circuit, suitable for detecting the pressure of the outer circulation ink circuit;

[0052] The internal circulation ink circuit is suitable for circulating the ink between the ink barrel 1, the first ink cartridge 3 and the second ink cartridge 4, and supplying ink to the nozzle 5;

[0053] The controller, the outer circulation ink circuit, the liquid level adjustment component, the pressure detection component and the inner circulation ink circuit are all connected to the controller signal.

[0054] Specifically, in the embodiment of the utility model, for the liquid level adjustment component, the following method can be adopted. For example, the liquid level adjustment component can include a pressure sensor arranged at the bottom of the ink barrel 1, obtain the pressure signal at the bottom of the ink barrel 1, and then calculate the liquid level height of the ink corresponding to the pressure signal through the controller. When the detected liquid level height is less than the ideal liquid level, the controller controls the ink supply pump 8 to operate, so that the ink supply barrel 2 supplies ink to the ink barrel 1 until the liquid level height of the ink corresponding to the pressure signal is equal to the ideal liquid level. Of course, this embodiment is only an example of the specific method of the liquid level adjustment group, but it is not limited to this. Those skilled in the art can make changes according to actual conditions, as long as the same technical effect can be achieved.

[0055] Furthermore, the external circulation ink circuit includes:

[0056] An external circulation pump 6, a first end of which is connected to the bottom end of the ink barrel 1;

[0057] A filter 7, a first end of which is communicated with a second end of the external circulation pump 6, and a second end of the filter 7 is communicated with a first end of the first ink cartridge 3;

[0058] The external circulation pump 6 is connected to the controller signal;

[0059] Wherein, the second end of the first ink cartridge 3 is connected to the ink barrel 1;

[0060] The circulation direction of the external circulation ink circuit is: the ink barrel 1, the external circulation pump 6, the filter 7, the first end of the first ink cartridge 3 and the second end of the first ink cartridge 3.

[0061] Among them, in the external circulation ink circuit, the external circulation pump 6 mainly plays a driving role, driving the ink in the entire external circulation ink circuit to circulate, preventing the ink from depositing and causing precipitation and stratification problems.

[0062] Furthermore, the ink adding barrel 2 supplies ink to the ink barrel 1 through an ink supply pump 8, and the ink supply pump 8 is connected to the controller signal.

[0063] Furthermore, the liquid level adjustment component comprises:

[0064] The liquid level sensor 9 is arranged in the ink barrel 1 and connected to the controller signal. It is suitable for obtaining the ink level in the ink barrel 1 and transmitting the ink level to the controller. The liquid level sensor 9 can be a direct plug-in liquid level sensor 9, which can use analog output. The bottom end of the sensor can be close to the bottom end of the ink barrel 1, and the top end of the sensor can be set at the top end of the ink barrel 1 to perform full-range detection of the liquid level.

[0065] The controller is set with an ideal liquid level, and the controller compares the ink level with the ideal liquid level. When the ink level is lower than the ideal liquid level, the controller controls the ink supply pump 8 to supply the ink in the ink adding barrel 2 to the ink barrel 1 until the ink level is equal to the ideal liquid level. It should be noted that when defining the ideal liquid level, an error range should be set for the ideal liquid level.

[0066] In addition, if the ink level is higher than the ideal level, the ink supply pump 8 stops operating.

[0067] Among them, when at the ideal liquid level, the ink in the first ink cartridge 3 is connected to the ink in the ink barrel 1, and the ink liquid level in the first ink cartridge 3 is equal to the ink liquid level in the ink barrel 1. The ideal liquid level allows the ink to circulate continuously in the external circulation ink path without intermittent problems.

[0068] Furthermore, the running speed of the ink supply pump 8 is positively correlated with the height difference between the ink level and the ideal level, so that the running speed of the ink supply pump 8 can be intelligently controlled, the ink level can be accurately controlled, and the reaction speed to the change of the ink level can be improved.

[0069] Furthermore, the pressure detection component includes:

[0070] The first pressure sensor 10 is arranged between the external circulation pump 6 and the filter 7, and is suitable for detecting the pressure in the pipeline connecting the external circulation pump 6 and the filter 7. The first pressure sensor 10 can read the detected pressure through an external display, and can also read the detected pressure by connecting to a controller. Of course, the controller can be considered as an industrial computer with a display function.

[0071] When the external circulation ink circuit operates normally, the speed of the external circulation pump 6 is directly proportional to the pressure detected by the first pressure sensor 10. The greater the speed of the external circulation pump 6, the greater the hydraulic pressure of the pipeline, and the pressure value should be within a normal range. The numerical range of ink supply systems of different sizes is different. Taking the system with a normal range of 150-190mbar as an example, when the read pressure is less than 150, it is necessary to check whether the flow is sufficient and whether the power of the external circulation pump 6 is insufficient. When the pressure value is less than 10, check whether the external circulation pump 6 is not working; when the read pressure is greater than 190, it is necessary to check whether the external circulation ink circuit is blocked at the filter 7 or other places. If the filter 7 is blocked, the filter 7 needs to be replaced in time. In the pressure detection component, the controller can adjust the speed of the external circulation pump 6 according to the pressure value to ensure that the external circulation ink flow is sufficient, and it can intuitively judge whether the filter 7 needs to be replaced.

[0072] If the first pressure sensor 10 reads the detected pressure by connecting with the controller, the controller can automatically adjust the speed of the external circulation pump 6 by reading the pressure value. When the speed of the external circulation pump 6 is constant, if the detected pressure value becomes larger, it can be determined whether the filter 7 is blocked and whether the speed of the external circulation pump 6 needs to be increased to ensure the ink flow rate; if the detected pressure value is very small, it can be determined whether the external circulation pump 6 is faulty.

[0073] Furthermore, the inner circulation ink circuit includes:

[0074] An internal circulation pump 11, wherein a first end of the internal circulation pump 11 is connected to a second end of the second ink cartridge 4, and a second end of the internal circulation pump 11 is connected to an ink barrel 1, wherein the second end of the second ink cartridge 4 is connected to ink in the second ink cartridge 4;

[0075] The first end of the second ink cartridge 4 is connected to the first end of the nozzle 5, and the second end of the nozzle 5 is connected to the third end of the first ink cartridge 3, wherein the third end of the first ink cartridge 3 is connected to the ink in the first ink cartridge 3; wherein, an extrusion component is provided in the nozzle 5, and the ink of the nozzle 5 is guided to the set position by extrusion when printing is required. The extrusion component is an existing technical means and will not be described in detail.

[0076] The internal circulation pump 11 and the nozzle 5 are both connected to the controller signal;

[0077] The circulation direction of the inner circulation ink circuit is: ink barrel 1, outer circulation pump 6, filter 7, first end of first ink cartridge 3, third end of first ink cartridge 3, nozzle 5, second end of second ink cartridge 4 and inner circulation pump 11. The inner circulation ink circuit allows ink to continuously flow through nozzle 5, ensuring that there is always ink ready for printing in nozzle 5.

[0078] Furthermore, it also includes:

[0079] A second pressure sensor 12, the third end of the second ink cartridge 4 is connected to the top of the ink barrel 1 through a pipeline, the second pressure sensor 12 is connected to the controller signal, and is suitable for obtaining the air pressure in the pipeline connecting the second ink cartridge 4 and the ink barrel 1, wherein the third end of the second ink cartridge 4 is connected to the top of the ink in the second ink cartridge 4.

[0080] Furthermore, it also includes:

[0081] The vacuum pump 13 is connected to the top end of the ink barrel 1 .

[0082] Furthermore, the second pressure sensor 12 and the vacuum pump 13 are both connected to the controller signal. The controller controls the vacuum pump 13 to evacuate the second ink cartridge 4 and the ink barrel 1 based on the air pressure in the pipeline connecting the second ink cartridge 4 and the ink barrel 1 obtained by the second pressure sensor 12, that is, the air pressure in the second ink cartridge 4 and the ink barrel 1.

[0083] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An ink supply system, characterized in that: include: An ink barrel (1), the ink barrel (1) being connected to an ink supply barrel (2), the ink supply barrel (2) being suitable for supplying ink to the ink barrel (1); An external circulating ink circuit, adapted to allow ink to circulate between the ink barrel (1) and the first ink cartridge (3); A liquid level regulating component, arranged on the external circulating ink path, suitable for regulating the liquid level of ink in the ink barrel (1); A pressure detection component, arranged on the outer circulation ink circuit, suitable for detecting the pressure of the outer circulation ink circuit; An internal circulation ink circuit is suitable for circulating ink between the ink barrel (1), the first ink cartridge (3) and the second ink cartridge (4), and supplying ink to the nozzle (5); The controller, the outer circulation ink circuit, the liquid level adjustment component, the pressure detection component and the inner circulation ink circuit are all connected to the controller signal.

2. The ink supply system according to claim 1, characterized in that: The external circulation ink circuit comprises: An external circulation pump (6), a first end of which is connected to the bottom end of the ink barrel (1); A filter (7), a first end of which is in communication with the second end of the external circulation pump (6), and a second end of the filter (7) is in communication with the first end of the first ink cartridge (3); The external circulation pump (6) is connected to the controller signal; Wherein, the second end of the first ink cartridge (3) is connected to the ink barrel (1); The circulation direction of the external circulation ink circuit is: the ink barrel (1), the external circulation pump (6), the filter (7), the first end of the first ink cartridge (3) and the second end of the first ink cartridge (3).

3. The ink supply system according to claim 1, characterized in that: The ink supply barrel (2) supplies ink to the ink barrel (1) via an ink supply pump (8), and the ink supply pump (8) is connected to a controller signal.

4. The ink supply system according to claim 3, characterized in that: The liquid level adjustment assembly comprises: A liquid level sensor (9), arranged in the ink barrel (1) and connected to the controller signal, suitable for obtaining the ink liquid level in the ink barrel (1) and transmitting the ink liquid level to the controller; The controller is provided with an ideal liquid level, and the controller compares the ink liquid level with the ideal liquid level. When the ink liquid level is lower than the ideal liquid level, the controller controls the ink supply pump (8) to supply the ink in the ink adding barrel (2) to the ink barrel (1) until the ink liquid level is equal to the ideal liquid level. When the ink is at an ideal liquid level, the ink in the first ink cartridge (3) is connected to the ink in the ink barrel (1), and the ink liquid level in the first ink cartridge (3) is equal to the ink liquid level in the ink barrel (1).

5. The ink supply system according to claim 3, characterized in that: The running speed of the ink supply pump (8) is positively correlated with the height difference between the ink liquid level and the ideal liquid level.

6. The ink supply system according to claim 2, characterized in that: The pressure detection component comprises: The first pressure sensor (10) is arranged between the external circulation pump (6) and the filter (7) and is suitable for detecting the pressure in the pipeline connecting the external circulation pump (6) and the filter (7).

7. The ink supply system according to claim 2, characterized in that: The inner circulation ink circuit comprises: an internal circulation pump (11), wherein a first end of the internal circulation pump (11) is in communication with a second end of the second ink cartridge (4), and a second end of the internal circulation pump (11) is in communication with an ink barrel (1), wherein the second end of the second ink cartridge (4) is in communication with ink in the second ink cartridge (4); The first end of the second ink cartridge (4) is in communication with the first end of the nozzle (5), and the second end of the nozzle (5) is in communication with the third end of the first ink cartridge (3), wherein the third end of the first ink cartridge (3) is in communication with the ink in the first ink cartridge (3); The internal circulation pump (11) and the nozzle (5) are both connected to the controller signal; The circulation direction of the internal circulation ink circuit is: ink barrel (1), external circulation pump (6), filter (7), first end of the first ink cartridge (3), third end of the first ink cartridge (3), nozzle (5), second end of the second ink cartridge (4) and internal circulation pump (11).

8. The ink supply system according to claim 1, characterized in that: Also includes: A second pressure sensor (12), wherein the third end of the second ink cartridge (4) is connected to the top of the ink barrel (1) via a pipeline, and the second pressure sensor (12) is connected to the controller signal and is suitable for obtaining the air pressure in the pipeline connecting the second ink cartridge (4) and the ink barrel (1), wherein the third end of the second ink cartridge (4) is connected to the top of the ink in the second ink cartridge (4).

9. The ink supply system according to claim 8, characterized in that: Also includes: A vacuum pump (13) is connected to the top end of the ink barrel (1).

10. The ink supply system according to claim 9, characterized in that: The second pressure sensor (12) and the vacuum pump (13) are both connected to the controller signal.

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