WO2017101753A1

WO2017101753A1 - Cleaning and moisturising device of spray nozzle

Info

Publication number: WO2017101753A1
Application number: PCT/CN2016/109592
Authority: WO
Inventors: 李星
Original assignee: 李星
Priority date: 2015-12-15
Filing date: 2016-12-13
Publication date: 2017-06-22
Also published as: CN105328995A

Abstract

Disclosed is a cleaning and moisturising device of a spray nozzle. The device comprises a main body (10), an electromagnetic assembly (20) and a piston (30). The electromagnetic assembly (20) is fixedly mounted on the main body (10); the main body (10) is provided with an ink inlet (11), a cleaning and moisturising liquid inlet (12) and an output port (13); and a piston chamber (14) is provided inside the main body (10), and the piston (30) is placed inside the piston chamber (14). An ink through hole (111) is provided between the ink inlet (11) and the piston chamber (14), and a cleaning and moisturising liquid through hole (121) is provided between the cleaning and moisturising liquid inlet (12) and the piston chamber (14). The piston (30) is fixedly connected to a movable iron core (23) of the electromagnetic assembly (20), and a piston through hole (31) is provided inside the piston (30); when a coil (21) is not energized, the piston through hole (31) is in communication with the ink through hole (111); and when the coil (21) is energized, the piston through hole (31) is in communication with the cleaning and moisturising liquid through hole (121). The device facilitates the automatic cleaning and maintenance of the spray nozzle, which replaces the traditional way of disassembly, cleaning and maintenance performed by manual power, effectively prevents the spray nozzle from being blocked, lowers the cleaning cost, and prolongs the service life of the spray nozzle.

Description

Nozzle cleaning and moisturizing device

Technical field

The invention relates to a printer nozzle, in particular to a nozzle cleaning and moisturizing device.

Background technique

1 is a schematic view showing the working principle of the nozzle. As shown in the figure, when the printer head 1 is in operation, the nozzle is filled with the ink 4, and when a voltage is applied to the resistor 2, the resistor is activated in a short time, so that the surrounding ink is short-timed. The microbubbles 3 are formed, the ink is vaporized at an extremely fast speed, the small bubbles become large, the bubble expands to the maximum, and the ink is extruded by the expansion force. Then, the bubble in the nozzle shrinks at an extremely high speed, so that the extruded ink forms an ink droplet, so that the ink droplets outside the extrusion nozzle are sprayed onto the surface of the output medium. After the ink is squeezed out, the bubble disappears and a capillary phenomenon occurs, so that the nozzle is filled with ink again, thus completing an ink jet cycle.

When the nozzle is not working, the ink remaining in the nozzle will dry out due to evaporation of water, and sticking to the inner surface of the nozzle will affect the normal inkjet, so cleaning must be performed. At present, the cleaning of the nozzles is usually to increase the current of the resistors, generate high-frequency bubbles, and increase the passage of ink to wash, but this method requires ink consumption, high cost, and low efficiency, and the effect of severely blocking the nozzle is not obvious. . In addition, increasing the current for a long time causes damage to the resistor, which reduces the service life of the nozzle, and directly burns the nozzle when it is severe.

Summary of the invention

In order to solve the above problems, the present invention provides a nozzle cleaning and moisturizing device for cleaning and moisturizing the nozzle, thereby effectively preventing nozzle clogging.

In order to achieve the above object, the head cleaning and moisturizing device of the present invention comprises a body, an electromagnetic component and a piston, the electromagnetic component being fixedly mounted on the body, the body being provided with an ink inlet for inputting ink, for inputting cleaning and moisturizing a liquid cleaning moisturizing liquid inlet and an outlet for delivering ink or cleaning the moisturizing liquid to the head, wherein the body is provided with a piston chamber, the piston being placed in the piston chamber and slidable within the piston chamber; An ink through hole is defined between the ink inlet and the piston chamber, and a cleaning moisturizing liquid through hole is opened between the cleaning moisturizing liquid inlet and the piston chamber; the electromagnetic component comprises a coil, a fixed iron core, a moving iron core and a spring. The iron core is fixed in the coil, the spring is disposed between the fixed iron core and the moving iron core; the piston is fixedly connected with the moving iron core, and a piston through hole is opened in the piston. The piston through hole communicates with the output port, when the coil is not energized, the piston through hole communicates with the ink through hole, the cleaning moisturizing liquid through hole is closed, and when the coil is energized, the piston Moisturizing liquid cleaning hole communicating the through hole, the through hole is closed ink.

The nozzle cleaning and moisturizing device of the present invention can also adopt the following technical solution. The nozzle cleaning and moisturizing device of the present invention comprises a body, an electromagnetic component, a piston and a spring, and the electromagnetic component is fixedly mounted on the body, and the body is provided on the body. An ink inlet for inputting ink, a cleaning moisturizing liquid inlet for inputting a cleaning moisturizing liquid, and an output port for conveying ink or cleaning the moisturizing liquid to the head, wherein the body is provided with a piston chamber, and the piston is placed in the piston chamber and Swept in the piston chamber; an ink through hole is defined between the ink inlet and the piston chamber, and a cleaning moisturizing liquid through hole is opened between the cleaning moisturizing liquid inlet and the piston chamber; the electromagnetic component includes a coil, a fixed iron core and a moving iron core, the fixed iron core being fixed in the coil; the spring being placed at a lower portion of the piston and capable of applying a force to the piston to bring the moving iron core closer to the a direction in which the iron core moves; the piston is fixedly connected to the moving iron core, and a piston through hole is opened in the piston, and the piston through hole communicates with the output port when the line When not energized, the piston through-hole communicated with the ink through hole, the cleaning fluid through moisturizing The hole is closed; when the coil is energized, the piston through hole communicates with the cleaning moisturizing liquid through hole, and the ink through hole is closed.

Preferably, an ink bag is disposed between the ink inlet and the ink through hole, and an ink inlet of the ink bag is in communication with the ink inlet, and an ink outlet of the ink bag is in communication with the ink through hole. A filter mesh is disposed in the ink bag.

Preferably, the nozzle cleaning and moisturizing device of the present invention further comprises a cleaning moisturizing liquid tank for conveying the cleaning moisturizing liquid to the cleaning moisturizing liquid inlet, and a boosting pump and a pressure sensor are disposed between the cleaning moisturizing liquid tank and the cleaning moisturizing liquid inlet. The cleaning moisturizing liquid in the cleaning moisturizing liquid tank is pressurized by the booster pump and then enters the cleaning moisturizing liquid inlet through the pressure sensor, and the pressure sensor is used to measure the fluid pressure input to the cleaning moisturizing liquid inlet after the boosting pump is pressurized.

Preferably, the nozzle cleaning and moisturizing device of the present invention further comprises a hydraulic bottle for conveying the cleaning moisturizing liquid to the cleaning moisturizing liquid inlet, and a flow monitor is arranged between the hydraulic bottle and the cleaning moisturizing liquid inlet for monitoring whether the hydraulic bottle is still in the bottle There is a remaining cleaning moisturizer.

Preferably, the piston is made of a ceramic material.

The nozzle cleaning and moisturizing device of the invention drives the piston to move by energizing and de-energizing the electromagnetic component, thereby realizing the switching of the ink to the nozzle or the cleaning of the moisturizing liquid, thereby realizing the automation of the nozzle cleaning. The use of the nozzle cleaning and moisturizing device of the invention is advantageous for realizing automatic cleaning and maintenance of the nozzle, replacing the traditional manual cleaning and maintenance, effectively avoiding the clogging of the nozzle, reducing the cleaning cost and prolonging the service life of the nozzle. The nozzle cleaning and moisturizing device of the present invention can be applied to nozzles of all the principles such as a nozzle using a film oscillation principle, in addition to being applicable to a nozzle for resistance heating.

DRAWINGS

Figure 1 is a schematic view showing the working principle of the nozzle;

2 is a schematic structural view of a first embodiment of a head cleaning and moisturizing device according to the present invention, illustrating a state in which an ink is output to a head when the electromagnetic component is not energized;

3 is another state diagram of the nozzle cleaning and moisturizing device corresponding to FIG. 2, illustrating a state in which the cleaning device outputs a cleaning moisturizing liquid when the electromagnetic component is energized;

Figure 4 is a schematic block diagram of a first embodiment of a cleaning moisturizing fluid input;

Figure 5 is a schematic block diagram of a second embodiment of cleaning the moisturizing fluid input;

Figure 6 is a schematic view showing the structure of a second embodiment of the head cleaning and moisturizing device of the present invention;

7 is a schematic structural view of a third embodiment of the head cleaning and moisturizing device of the present invention, illustrating a state in which ink is output to the head when the electromagnetic component is not energized;

Fig. 8 is a view showing another state of the head cleaning and moisturizing device corresponding to Fig. 7, showing a state in which the cleaning unit outputs a cleaning moisturizing liquid when the electromagnetic unit is energized.

detailed description

Hereinafter, the structure, working principle and the like of the present invention will be further described with reference to the accompanying drawings.

As shown in the first embodiment shown in FIGS. 2 and 3, the head cleaning and moisturizing device of the present invention comprises a body 10, an electromagnetic assembly 20 and a piston 30, and the electromagnetic assembly 20 is fixedly mounted on the body 10, the body 10 An ink inlet 11 for inputting ink, a cleaning moisturizing liquid inlet 12 for inputting a cleaning moisturizing liquid, and an output port 13 for conveying ink or cleaning the moisturizing liquid to the head, wherein the body 10 is provided with a piston chamber 14 The piston 30 is disposed in the piston chamber 14 and slidable in the piston chamber 14; an ink through hole 111 is defined between the ink inlet 11 and the piston chamber 14, and the cleaning moisturizing liquid inlet 12 and the piston chamber 14 are opened. It The cleaning moisturizing liquid through hole 121 is provided, and the output port 13 is in communication with the piston chamber 14; the electromagnetic assembly 20 includes a coil 21, a fixed iron core 22, a moving iron core 23 and a spring 24, and the fixed iron core 22 is fixed In the coil 21, the spring is disposed between the fixed iron core 22 and the moving iron core 23; the piston 30 is fixedly connected to the moving iron core 23, and the piston 30 is provided with a piston through hole 31 therein. The piston through hole 31 communicates with the output port 13 through the piston chamber 14.

The piston 30 is made of a ceramic material and is made of a ceramic material, which has the advantages of corrosion resistance and friction resistance. The piston 30 can also be made of a metal material such as stainless steel.

When the coil 21 is not energized, the piston through hole 31 communicates with the ink through hole 111 and the output port 13, as shown in FIG. 2, at this time, ink can enter from the ink inlet 11, and sequentially pass through the ink through hole 111 and the piston through hole 31. The piston chamber 14 and the output port 13 enter the nozzle; when the coil 21 is energized, the movable iron core 23 is moved by the suction force toward the fixed iron core 22 to drive the piston 30 to move upward, and the piston through hole 31 communicates with the cleaning moisturizing liquid through hole. 121 and the output port 13, as shown in FIG. 3, the ink through hole 111 is closed, at this time, the cleaning moisturizing liquid can enter from the cleaning moisturizing liquid inlet, and sequentially passes through the cleaning moisturizing liquid through hole 121, the piston through hole 31, and the piston chamber 14. And the output port 13 enters the nozzle, and the ink remaining in the nozzle is squeezed out to realize the cleaning and moisturizing of the nozzle. When the power is off, the movable iron core 23 is reset by the action of the spring 24, and the piston is moved downward and reset, as shown in FIG. In the state shown, the cleaning moisturizing liquid through hole 121 is closed, and the ink through hole 111 is opened.

For different printers, the way to clean the moisturizer can be different. When the head cleaning and moisturizing device of the present invention is used on a large-sized inkjet printer, as shown in the embodiment shown in FIG. 4, the cleaning moisturizing liquid can be installed in the cleaning moisturizing liquid tank 40, and between the cleaning moisturizing liquid tank 40 and the cleaning moisturizing liquid inlet 12 A booster pump 41 and a pressure sensor 42 may be provided, and the cleaning moisturizing liquid in the cleaning moisturizing liquid tank 40 is pressurized by the booster pump 41 and then passed through the pressure sensor 42 to enter the cleaning moisturizing liquid inlet 12. The pressure sensor 42 can measure the pressure of the booster pump 41 and input it for cleaning. The fluid pressure of the moisturizing liquid inlet 12 facilitates the control of the pressure and prevents the pressure of the cleaning liquid from being excessively damaged. When the nozzle cleaning and moisturizing device of the present invention is used on a small inkjet printer, as shown in the embodiment shown in FIG. 5, the cleaning moisturizing liquid can be installed in the hydraulic bottle 50, and the flow monitoring can be set between the hydraulic bottle 50 and the cleaning moisturizing liquid inlet 12. The device 51 is configured to monitor whether there is any remaining cleaning moisturizing liquid in the hydraulic bottle, which is convenient for timely replacement. The cleaning moisturizing liquid in the hydraulic bottle has its own pressure and passes through the flow monitor to enter the cleaning moisturizing liquid inlet.

A schematic structural view of a second embodiment of the head cleaning and moisturizing device of the present invention as shown in FIG. 6 is provided between the ink inlet 11 and the ink through hole 111 as compared with the embodiment shown in FIGS. 2 and 3. The ink bag 60, a negative pressure is generated in the ink bag 60 to prevent the ink from being dripped, and the ink inlet 61 of the ink bag 60 communicates with the ink inlet 11, the ink outlet 62 of the ink bag 60 is The ink through holes 111 are in communication. A filter 63 is disposed in the ink bag 60 to filter impurities in the ink to improve ink fluency.

As shown in the third embodiment shown in FIGS. 7 and 8, the nozzle cleaning and moisturizing device of the present invention comprises a body 10, an electromagnetic assembly 20, a piston 30 and a spring 24', and the electromagnetic assembly 20 is fixedly mounted on the body 10, The body 10 is provided with an ink inlet 11 for inputting ink, a cleaning moisturizing liquid inlet 12 for inputting a cleaning moisturizing liquid, and an output port 13 for conveying ink or cleaning the moisturizing liquid to the nozzle. The body 10 is provided with a piston chamber. 14. The piston 30 is disposed in the piston cavity 14 and slidable in the piston cavity 14; an ink through hole 111 is defined between the ink inlet 11 and the piston cavity 14, and the cleaning moisturizing liquid inlet 12 is provided. A cleaning moisturizing liquid through hole 121 is opened between the piston chamber 14 and the output port 13 is connected to the piston chamber 14; the electromagnetic assembly 20 includes a coil 21, a fixed iron core 22 and a moving iron core 23, and the fixed iron core The piston 30 is fixedly connected to the movable iron core 23, and the piston 30 is provided with a piston through hole 31 through which the piston through hole 31 communicates with the output port 13; The spring 24' is placed at the lower portion of the piston 30 and is capable of The piston 30 applies a force to move the movable core 23 in a direction approaching the fixed core 22.

The position of the spring 24' of the embodiment shown in Figs. 7 and 8 is different from that of the embodiment shown in Figs. 2 and 3, and is also provided between the fixed core 22 and the moving iron core 23. That is, it is disposed above the piston 30 instead of being disposed below the piston 30. Therefore, the coil 21 is energized, and the movable iron core 23 of the embodiment shown in Figs. 2 and 3 is moved upward by the suction force, and Figs. 7 and 8 The movable iron core 23 of the illustrated embodiment generates a repulsive force against the movable iron core 23 to move downward when the coil 21 is energized, and to generate a repulsive force, the movable iron core 23 in the present embodiment is made of a magnetic material or A magnetic material is added to the moving iron core 23.

As shown in FIG. 7 and FIG. 8, when the coil 21 is not energized, the movable iron core 23 is close to the fixed iron core 22 by the force of the spring 24', as shown in FIG. 7, when the piston through hole 31 communicates with the ink passage. The hole 111 and the output port 13, the ink can enter from the ink inlet 11, and sequentially enter the nozzle through the ink through hole 111, the piston through hole 31, the piston chamber 14 and the output port 13; when the coil 21 is energized, the movable iron core 23 is subjected to the repulsive force. The action of the spring 24' is moved away from the fixed iron core 22, and the piston 30 is moved downward. At this time, the piston through hole 31 communicates with the cleaning moisturizing liquid through hole 121 and the output port 13, as shown in FIG. The ink through hole 111 is closed. At this time, the cleaning moisturizing liquid can enter from the cleaning moisturizing liquid inlet, and sequentially passes through the cleaning moisturizing liquid through hole 121, the piston through hole 31, the piston chamber 14 and the output port 13 to enter the nozzle, and the ink remaining in the nozzle is left. Extrusion, the cleaning and moisturizing of the nozzle is realized; when the power is off, the moving iron core 23 is reset by the action of the spring 24', and the piston 30 is moved upward and reset, returning to the state shown in FIG. 7, and the cleaning moisturizing liquid through hole 121 is Closed, the ink through hole 111 is opened. An ink bag 60 is disposed between the ink inlet 11 and the ink through hole 111, and a negative pressure is generated in the ink bag 60 to prevent the ink from ejecting, and the ink inlet 61 and the ink inlet 11 of the ink bag 60 are provided. Connected, the ink The ink outlet 62 of the bladder 60 communicates with the ink through hole 111. A filter 63 is disposed in the ink bag 60 to filter impurities in the ink to improve ink fluency.

The above is only a schematic description of the present invention, and those skilled in the art should understand that various modifications can be made to the present invention without departing from the working principle of the present invention.

Claims

A nozzle cleaning and moisturizing device, comprising: a body, an electromagnetic component and a piston,

The electromagnetic component is fixedly mounted on the body, and the body is provided with an ink inlet for inputting ink, a cleaning moisturizing liquid inlet for inputting a cleaning moisturizing liquid, and an output port for conveying ink to the nozzle or cleaning the moisturizing liquid. a piston chamber is disposed in the body, and the piston is disposed in the piston chamber and can slide in the piston chamber;

An ink through hole is defined between the ink inlet and the piston cavity, and a cleaning moisturizing liquid through hole is opened between the cleaning moisturizing liquid inlet and the piston cavity;

The electromagnetic component includes a coil, a fixed iron core, a moving iron core and a spring, the fixed iron core is fixed in the coil, and the spring is disposed between the fixed iron core and the moving iron core;

The piston is fixedly connected to the movable iron core, and a piston through hole is opened in the piston, and the piston through hole communicates with the output port. When the coil is not energized, the piston through hole communicates with the ink. The holes are connected, the cleaning moisturizing liquid through hole is closed, and when the coil is energized, the piston through hole communicates with the cleaning moisturizing liquid through hole, and the ink through hole is closed.
A nozzle cleaning and moisturizing device, comprising: a body, an electromagnetic component, a piston and a spring,

The electromagnetic component is fixedly mounted on the body, and the body is provided with an ink inlet for inputting ink, a cleaning moisturizing liquid inlet for inputting a cleaning moisturizing liquid, and an output port for conveying ink to the nozzle or cleaning the moisturizing liquid. a piston chamber is disposed in the body, and the piston is disposed in the piston chamber and can slide in the piston chamber;

An ink through hole is defined between the ink inlet and the piston cavity, and a cleaning moisturizing liquid through hole is opened between the cleaning moisturizing liquid inlet and the piston cavity;

The electromagnetic component includes a coil, a fixed iron core and a moving iron core, and the fixed iron core is fixed in the coil;

The spring is disposed at a lower portion of the piston, and is capable of applying a force to the piston to move the movable iron core in a direction close to the fixed iron core;

The piston is fixedly connected to the movable iron core, and a piston through hole is opened in the piston, and the piston through hole communicates with the output port. When the coil is not energized, the piston through hole communicates with the ink. The holes are connected, and the cleaning moisturizing liquid through hole is closed; when the coil is energized, the piston through hole communicates with the cleaning moisturizing liquid through hole, and the ink through hole is closed.
The head cleaning and moisturizing device according to claim 1 or 2, wherein an ink bag is provided between the ink inlet and the ink through hole, and an ink inlet of the ink bag communicates with the ink inlet. The ink outlet of the ink bag is in communication with the ink through hole, and a filter mesh is disposed in the ink bag.
The head cleaning and moisturizing device according to claim 1 or 2, further comprising a cleaning moisturizing liquid tank for conveying the cleaning moisturizing liquid to the cleaning moisturizing liquid inlet, wherein the cleaning moisturizing liquid tank and the cleaning moisturizing liquid inlet are provided between a booster pump and a pressure sensor, wherein the cleaning moisturizing liquid in the cleaning moisturizing tank is pressurized by a booster pump and then passes through a pressure sensor to enter a cleaning moisturizing liquid inlet, and the pressure sensor is used for measuring the pressure of the boosting pump after being pressurized. Fluid pressure at the inlet of the moisturizer.
The head cleaning and moisturizing device according to claim 1 or 2, further comprising a hydraulic bottle for supplying a cleaning moisturizing liquid to the cleaning moisturizing liquid inlet, the hydraulic bottle and the cleaning A flow monitor is placed between the inlets of the moisturizing fluid to monitor whether there is any remaining moisturizing liquid in the hydraulic bottle.
A head cleaning and moisturizing device according to claim 1 or 2, wherein the piston is made of a ceramic material.