KR20090003391U - Liquid Supplier - Google Patents

Abstract

The present invention provides a fluid supply device for maintaining the discharge pressure of the fluid (e.g. ink, etc.) with respect to the fluid use means (e.g., print head, etc.) to prevent the fluid use means from discharging the fluid, that is, excessive discharge. In providing. The present invention divides the pressure regulating space into the body forming the tubular body separately, and installs an inlet pipe forming a passage for introducing ink in the body in the pressure regulating space, thereby providing a fluid level in the pressure regulating space. By opening and closing the opening means to open and close the inlet pipe to maintain a constant water level in the pressure control space to maintain a constant discharge pressure of the fluid. For this reason, the fluid use means is able to carry out its operation smoothly without discharging a fluid to a second.

Printer head, ink, printing, water level, discharge pressure, fluid.

Description

Fluid supply device {Liquid Supplier}

The present invention relates to a fluid supply device used for supplying a fluid such as, for example, ink. In particular, the fluid supply device maintains a constant discharge pressure of the fluid to the fluid use means so that the fluid use means does not discharge the fluid in seconds. Relates to a device.

Generally, the print head, which is one of the fluid use means, is connected to the ink reservoir through a tube to receive ink and to print. At this time, the ink must be injected at a constant pressure according to the ink usage of the print head. This is because excess ink can be ejected from the print head when the injection pressure of the ink is higher than the appropriate level. This can cause ink to drip and fall onto the print, resulting in the print becoming unwieldy.

However, the existing ink reservoir is usually located higher than the print head to supply ink, which can sufficiently cause the above problem. This is because the injection pressure of the ink becomes the highest point in the state where the ink reservoir is full, and decreases as the level becomes lower, since the injection pressure of the ink may be higher than the appropriate level from the highest point to the arbitrary level. Thus, the print head can provide a cause for discharging thatched ink. In addition, since the injection pressure of the ink varies depending on the number of the ink in the ink reservoir, the print job of the print head may be disturbed.

Accordingly, an object of the present invention is to solve such a problem, and to provide a fluid supply device for maintaining the discharge pressure of the fluid to the fluid using means to ensure that the fluid using means does not discharge the fluid early, that is, excessive discharge. It is.

The present invention for achieving the above object is to form a fluid inlet to the upper inside and the lower body to form a cylinder having a receiving space protruding the fluid discharge pipe portion the fluid introduced into the receiving space through the fluid inlet A body configured to discharge to the fluid discharge pipe part; And a pressure regulating space divided by a first separating wall crossing the upper and lower portions of the receiving space and communicating with the fluid discharge pipe part, and installed to be located in the pressure adjusting space on the first separating wall. And an inlet pipe which communicates with the pressure control space and forms a passage for introducing the fluid in the accommodation space into the pressure control space, and is installed inside the pressure control space and according to the fluid level in the pressure control space. It characterized in that it comprises a pressure regulating means consisting of opening and closing means to maintain a constant fluid level by opening and closing the fluid discharge pipe to maintain a constant discharge pressure.

At this time, the opening and closing means is formed by a hollow body having a sealed space therein and integrally protruding from one side of the hollow body, the middle of which is installed to rotate in the pressure control space and moves along the water level. An actuating means consisting of a pressing member configured to move the end up and down; And one side is formed under the end of the pressing member and the other side, which is heavier than the one side, is positioned at the lower portion of the outlet pipe portion so that the middle thereof is rotated in the pressure regulating space to move up and down of the pressing member. Therefore, preferably made of an opening and closing member to open and close the outflow pipe.

In addition, the outlet pipe portion includes a needle member for sending the fluid in the accommodation space to the pressure control space through the outlet pipe portion, and located inside the outlet pipe portion to move up and down the fluid level to open and close the needle member. It is preferable that a float is further provided, and at the other end of the opening and closing member, a vertical protrusion is further protruded to push up the float by the operation of the opening and closing means so that the float is more securely closed to the needle member.

In addition, the accommodation space except the pressure control space is divided into two vertical spaces by a second separating wall crossing the middle, and the left and right sides of the second separating wall are holes for contacting the vertical spaces with each other. It is preferable that a mesh filter is further installed in any one of the holes.

In addition, it is preferable that a partition wall body is further provided to the fluid inlet in the pressure regulating space to secure an exhaust passage through which air inside thereof can be exhausted to the outside when the fluid is introduced.

In addition, the hollow body is separated by the partition wall and on both sides by the fusion of the plastic sheet is characterized in that it is able to operate by the other one buoyancy even if any one of the plastic sheet is broken.

In addition, the fluid discharge pipe portion is further provided with a discharge pipe opening and closing means for opening and closing the fluid discharge pipe portion, the discharge pipe opening and closing means is in contact with the discharge passage of the fluid discharge pipe portion packing to be fitted inside the fluid discharge pipe portion The elastic member is installed under the packing member with an elastic member, and when the external pressing pressure penetrates the discharge passage by blocking the discharge passage under the elastic force of the elastic member, the elastic member contracts. Has a stopper member for allowing the discharge passage to be in contact with the outside to discharge the fluid, and has a through hole communicating with the discharge passage to be detachably installed in the fluid discharge pipe to prevent the packing member from being pulled out. It is preferably made of a cap member.

By the above solution means, since the discharge pressure of the fluid to the fluid use means is kept constant, the fluid use means may smoothly perform its work without discharging the fluid in seconds.

The above objects, advantages and other features will become apparent from the following description with reference to the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows. Like reference numerals designate like parts throughout the drawings.

1 is a view showing a state in which the fluid supply device of the first embodiment according to the present invention is mounted on the printer, Figure 2 is a cross-sectional view showing a fluid supply device of the first embodiment according to the present invention, Figure 3 is a third embodiment according to the present invention 4 is an enlarged view showing a portion A of FIG. 3. FIG.

As shown in the figure, it is connected to the printer head 1 selected as an example of the fluid use means, and is provided with a body 10 for supplying fluid, ie ink, for printing work to the printer head 1. The body 10 forms a cylinder having an accommodating space 11 therein and stores ink to be supplied to the printer head 1. Ink injection into the receiving space 11 is made through a fluid inlet 13 formed in the upper portion of the body 10, the fluid inlet 13 is opened and closed by a lid (14). In addition, the ink of the receiving space 11 is discharged through the fluid discharge pipe 15 is formed to protrude in the lower portion of the body 10, the fluid discharge pipe 15 is discharge pipe opening and closing means 20 mounted therein It is opened and closed by) and supplies ink of the accommodation space 11 to the printer head 1.

The discharge pipe opening and closing means 20 is a resin packing member 21 that is fitted to the interior of the fluid discharge pipe 15 having a discharge passage 21a in the center, and preferably a spring elastic member 23 And a stopper member 25 placed below the packing member 21 and a through hole 28a in contact with the discharge passage 21a and installed to be detachably attached to the end of the fluid discharge pipe portion 15. The cap member 28 is formed to prevent the member 21 from being pulled out, and the stopper member 25 supports the discharge passage 21a of the fluid discharge pipe portion 21 with the help of the elastic member 23. Opening and closing allows the fluid discharge pipe 15 to discharge ink.

That is, the plug member 25 normally blocks the discharge passage 21a by receiving the elastic force of the elastic member 23 to block the outflow of ink. Then, when the discharge passage 21a of the fluid discharge pipe part 15 is connected to an ink injection needle 3 which is protruded or inserted in order to inject ink into the printer head 1, the pipe part 3 is connected. The stopper member 25 is pressed through the through hole 28a and the discharge passage 21a to contract the elastic member 23. At this time, the discharge passage 21a is a conduit 3a of the injection pipe section 3a. It is in contact with the state so that the ink can be discharged to the desired place from the fluid discharge pipe portion 15 through the pipe line 3a of the injection pipe portion (3) (see Figure 4).

The ink supplied to the printer head 1 along the fluid discharge pipe part 15 opened by the operation of the discharge pipe part opening and closing unit 20 is supplied to the printer head 1 while maintaining a constant discharge pressure. do. This is achieved by the pressure regulating means 40. The printer head 1 receives ink from which the discharge pressure is maintained constant by the pressure regulating means 40 from the fluid discharge pipe part 15, as in the prior art. Thatched runs smoothly without discharging ink.

As such, the pressure adjusting means 40 which maintains the discharge pressure of the ink in constant contact with the fluid discharge pipe part 15 is formed by the first separation wall 16 which vertically crosses the lower portion of the receiving space 11. The inlet pipe for dividing the pressure control space (41) is formed, the pressure control space (41) is installed in the first separation wall (16) to contact the receiving space (11) and the pressure control space (41) mutually (43) is formed to form a passage for introducing the ink in the accommodation space (11) into the pressure control space (41), and the inlet pipe (43) with buoyancy in the pressure control space (41) By providing the opening and closing means 45 for opening and closing, the opening and closing means 45 opens and closes the inflow pipe 43 in accordance with the ink level in the pressure control space 41 to increase the ink level in the pressure control space 41. Discharge of ink discharged to the fluid discharge pipe part 15 by keeping it constant Thereby maintaining a constant force.

In this way, the opening and closing means 45 for maintaining a constant level of ink in the pressure control space 41 is integrated from one side of the hollow body (45a) and the hollow body (45a) having a sealed space inside the operating means The pressing member 45b is formed so as to protrude in the middle and the middle thereof is installed to rotate in the pressure regulating space 41 so that its end is moved up and down by the hollow body 45a moving along the water level. One side is formed under the end of the pressing member 45b to form a shape, the other side is heavier than the one side is the opening and closing member 45c located in the lower portion of the outlet pipe portion 43, the middle of the pressure control space 41 Installed in a rotational direction), and the pressure control space by opening and closing the outlet pipe part 43 while the opening and closing member 45c moves up and down according to the vertical movement of the pressing member 45b by the hollow body 45a. Ying within 41 Ensure that the water level is kept constant.

Reference numerals 45d and 45e denote support members for interlocking the pressing member 45b and the opening / closing member 45c to rotate in the pressure regulating space 41. Unlike the drawings, the pressing member 45b and the opening / closing member 45c are pinned in the middle thereof, thereby finding that they can be installed to rotate in the pressure adjusting space 41.

That is, the opening and closing means 45 is the ink level in the pressure control space 41 is the appropriate level, the pressing member 45b by the hollow body 45a by pressing the opening and closing member 45c by the outlet pipe portion ( 43) (see Figure 2). However, when the ink level is lower than the appropriate level, the pressing member 45b is lifted by the hollow body 45a descending along the water level, whereby the other side of the opening and closing member 45c is lowered by its own weight and the outlet pipe portion 43 By dropping in, the outflow pipe part 43 is opened to supply ink to the accommodation space 41 so that the ink level can reach an appropriate level (see Fig. 3).

Since the operation of the opening and closing means 45 is made fine, because the ink level in the pressure control space 41 can be kept constant, the discharge pressure of the ink discharged from the fluid discharge pipe portion 15 This will remain constant. Therefore, the printer head 1 can smoothly perform printing without discharging thatch ink by receiving ink that maintains a constant pressure regardless of the ink level of the accommodation space 11. Unlike the drawing, the same result is obtained even when the fluid discharge pipe part 15 is indirectly connected to the print head 1 through a tube.

In particular, the hollow body 45a is separated into partitions 45f, and both sides are fused with plastic paper to form a hollow structure. Therefore, even if any one of the plastic paper is characterized by the ability to operate by maintaining the buoyancy by the hollow portion held by the remaining plastic paper.

On the other hand, the fluid discharge pipe portion 15 is formed to be inclined on the discharge side of the pressure control space 41 is in contact with the inclined flow passage 19 for controlling the rapid discharge of the ink to ride up the inclined flow passage 19 Discharge.

In addition, the accommodation space 11 except the pressure control space 41 is divided into two upper and lower spaces (11a, 11b) by the second separation wall 17 crossing the middle thereof, the second separation Holes 18a and 18b for contacting the upper and lower spaces 11a and 11b with each other are formed on the left and right sides of the wall 17, and a mesh filter 51 is provided in one of the holes 18a. desirable. The hole 18a in which the filter 51 is installed provides a passage through which ink injected into the upper space 11a can move to the lower space 11b, and the filter 51 opens the hole 18a. The ink passing through is filtered, and the other hole 18b provides a passage through which the air therein can escape to allow the ink to enter the lower space 11b. When the accommodation space 11 is divided in this way, the drop distance of the ink is shortened and the impact thereof is considerably alleviated, so that the generation of bubbles can be minimized.

In addition, the pressure regulating space 41 has a partition wall 71 for securing an exhaust passage 72 through which air therein can escape to allow the ink to enter the pressure regulating space 41. It is installed up to the inlet 13. The fluid inlet 13 is provided with a shielding film 73 made of a flexible material inclined from the inner circumference so as to block the ink introduced into the exhaust passage 72.

Figure 5 is a cross-sectional view showing a fluid supply device of a second embodiment according to the present invention, Figure 6 is a view showing the operating state of the fluid supply device of a second embodiment according to the present invention.

As shown in the figure, in the fluid supply apparatus of the second embodiment according to the present invention, the pressure in the outflow pipe part 43 is controlled by the ink in the accommodation space 11 through the outflow pipe part 43 in the first embodiment. The needle member 111 for sending to the space 41 and the inside of the outflow pipe portion 43 is installed in accordance with the level of the ink is raised and lowered to the opening 113 for opening and closing the needle member 111, On the other end of the opening and closing member 45c, the buoy 113 is pushed up according to the operation of the opening and closing means 45 so as to prevent the needle member 111 from discharging ink any more when the proper level is reached. Protruding to form a vertical projection 115 to close the needle member 111 more securely.

As described above, according to the present invention, by maintaining the discharge pressure of the fluid to the fluid using means constant, there is an effect that the fluid using means to smoothly perform its work without discharging the fluid.

1 is a view showing a state in which the fluid supply device of the present invention is mounted on the printer,

2 is a cross-sectional view showing a fluid supply device of a first embodiment according to the present invention;

Figure 3 is a view showing the operating state of the fluid supply device of the first embodiment according to the present invention,

4 is an enlarged view showing a portion A of FIG. 3;

Figure 5 is a sectional view showing a fluid supply device of a second embodiment according to the present invention, and

Figure 6 is a view showing the operating state of the fluid supply device of a second embodiment according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: Printer head 3: Ink injection pipe part

10: body 11: accommodation space

11a, 11b: up and down space 13: fluid inlet

14: lid 15: fluid discharge pipe

16: first partition wall 17: second partition wall

18a, 18b: Hole 19: Sloped

20: opening and closing means of the discharge pipe 21: packing member

21a: exhaust passage 23: elastic member

25: cap member 28: cap member

28a: through hole 40: pressure regulating means

41: pressure control space 43: inlet pipe

45: opening and closing means 45a: hollow body

45b: Pushing member 45c: Opening and closing member

51: filter 71: tube

111: needle member 113: ball

115: vertical turning

Claims (7)

A body configured to form a fluid inlet at an upper portion thereof and a cylinder having a receiving space at a lower portion thereof to protrude a fluid discharge tube to discharge the fluid introduced into the accommodation space through the fluid inlet to the fluid discharge tube; And A pressure regulating space divided by a first separating wall crossing the upper and lower parts of the receiving space and communicating with the fluid discharge pipe part, and installed to be located in the pressure adjusting space on the first separating wall; An inlet pipe which communicates with the pressure regulating space and forms a passage for introducing the fluid in the accommodation space into the pressure regulating space, and is installed inside the pressure regulating space and moves the inlet pipe according to the fluid level in the pressure regulating space. And opening and closing means for maintaining a constant fluid level by opening and closing to maintain a constant discharge pressure of the fluid discharged to the fluid discharge pipe portion. According to claim 1, The opening and closing means is a hollow body having a sealed space therein, and the hollow body is formed integrally protruding from one side of the hollow body, the middle of which is installed to rotate in the pressure control space to move along the water level An actuating means consisting of a pressing member whose end is moved up and down by a sieve; And It is formed in the shape of a rod one side is below the end of the pressing member and the other side heavier than the one side is located in the lower portion of the outlet pipe portion so that the middle is installed to rotate in the pressure control space to the vertical movement of the pressing member Fluid supply device, characterized in that consisting of the opening and closing member to open and close the outlet pipe. The needle member of claim 2, wherein the outlet pipe portion includes a needle member for sending the fluid in the accommodation space to the pressure control space through the outlet pipe portion, and is positioned inside the outlet pipe portion to move up and down along the level of the fluid. The opening is further provided for opening and closing, and the other end of the opening and closing member is pushed up the accessory by the operation of the opening and closing means when the appropriate level, the projection is further protruding vertical projection to close the needle member more securely Fluid supply device, characterized in that formed. The storage space of claim 1, wherein the accommodation space, except for the pressure control space, is divided into two vertical spaces by a second separation wall crossing the middle thereof, and the upper and lower spaces communicate with each other on the left and right sides of the second separation wall. To each of the holes are formed, and any one of the holes in the fluid supply device characterized in that the filter is further installed. The fluid supply apparatus according to claim 1, wherein the pressure regulating space is further provided with a partition wall for securing an exhaust passage through which the air therein can be exhausted to the outside when the fluid is introduced. The fluid supply apparatus according to claim 2, wherein the hollow body is separated by a partition wall and both sides of the hollow body are operated by one buoyancy even if any one of the plastic sheets is damaged by fusion of the plastic sheets. According to claim 1, The fluid discharge pipe portion is further provided with a discharge pipe opening and closing means for opening and closing the fluid discharge pipe portion, the discharge pipe opening and closing means is in contact with the discharge passage of the fluid discharge pipe to the inside of the fluid discharge pipe portion It is installed under the packing member having a packing member and an elastic member to be fitted, and normally, when the external pressing pressure is applied while blocking the discharge passage under the elastic force of the elastic member, the discharge is caused by contraction of the elastic member. It consists of a cap member to be in contact with the outside to discharge the fluid, and a cap member for having a through hole in contact with the discharge passage is installed to be detachable to the fluid discharge pipe portion to prevent the packing member from falling out Fluid supply device characterized in that.

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