WO2012062201A1 - Ink filling device for ink cartridge - Google Patents

Abstract

The present invention provides an ink filling device for an ink cartridge (1), the ink filling device comprising a base (2), an upper casing (3) connected to the base (2) and an ink filling container (4) for containing ink. The upper housing (3) has an ink cartridge receiving cavity (38) for placing the ink cartridge (1). An ink filling interface (34) to be joined to an ink outlet (41) of the ink filling container (4) and an ink filling needle (33) to be inserted into an ink filling hole (11) on the ink cartridge (1) are further disposed on a top wall (31) of the upper casing (3). The ink filling container (4) is a negative-pressure ink filling container capable of extracting air from the ink cartridge in advance.

Description

 Ink filling device for ink cartridge Technical field

The present invention relates to an ink filling device for replenishing ink of an ink jet printer cartridge. The present application claims priority to Chinese Patent Application No. 201020597903.X, entitled "Ink Filling Device for Ink Cartridges", filed on November 9, 2010, the entire contents of which is incorporated herein by reference. in.

Background technique

At present, there are many ink cartridges for inkjet printers in the market, that is, the printing nozzles are integrated with the ink containers, generally the structure of the sponge cartridges. This type of ink cartridge has a feature that allows the ink cartridge to be inked and then used after the user has finished using the ink.

Commonly used ink filling methods are as follows:

1. Nozzle filling method. The manufacturer has designed and supplied a complete range of accessories for the user: ink bottles, cartridge covers, screws, allowing the user to inject ink into the cartridge from the nozzle of the cartridge. The disadvantage of this method is that adding ink from the nozzle will cause dust and other large particulate matter that may block the nozzle to directly enter the ink cartridge without passing through the ink cartridge filtering system. If the quality of the compatible ink is not high, the nozzle may be clogged and the ink cartridge may be scrapped. And this one-piece ink cartridge should have a longer life if it uses original ink.

2. Reaming perfusion method. There is a vent on each of the ink cartridges, which is a respiratory device designed to maintain the pressure balance inside the cartridge. The user expands the air vent on the cartridge and then injects ink from there. The disadvantage of this method is that if the air vent is enlarged, causing the air pressure adjustment function to fail, the ink will overflow from the nozzle. Destroying the air holes will seriously invalidate the ink cartridges.

3. Drilling and perfusion method. The ink cartridge itself has no ink outlet other than the nozzle, and the air hole cannot be broken, so only the drilling method can be used. The manufacturer has designed and supplied a complete range of accessories for the user: ink bottles with needles, drill bits, leather tigers (hand winders). The disadvantage of this method is that it requires drilling and troublesome operation; it is easy to have fine particles falling into the ink cartridge during drilling; more auxiliary tools are needed; it is difficult to control the amount of ink, and the ink is easily filled from the nozzle and the upper shell. The hole overflows.

 Summary of the shortcomings of existing ink filling methods:

1. Using positive pressure ink filling, it is easy to appear that the ink does not fill well under the ink supply column, resulting in printing streaks and broken ink;

2. The sponge cartridge uses the above method to easily cause uneven ink filling;

3, improper operation and control, easy to make ink leak, soiling clothes and hands;

4. When using the drill bit to expand the ink cartridge space, you need to master the strength;

5, when using a syringe or a spring bottle to fill, the pumping is not flexible;

6, the use of more auxiliary tools, the operation is complex;

7, after the machine often leaks ink, the printer does not recognize the ink cartridges and other issues;

8, the ink on the metal chip is not clean, it is easy to cause the printer to short circuit.

technical problem

The object of the present invention is to provide an ink filling device for an ink cartridge which is convenient to use, clean and has a good filling effect in view of the defects of the prior art.

Technical solution

In order to solve the above technical problem, the present invention adopts the following technical solution: designing an ink filling device for an ink cartridge, comprising a base, an upper casing connected to the base, and an ink filling container containing ink, wherein the upper casing has An ink cartridge accommodating chamber for arranging the ink cartridge, the top wall of the upper casing further provided with an ink filling interface for interfacing with the ink outlet of the ink filling container and an ink filling hole for inserting the ink cartridge An ink injecting container is a negative pressure ink filling container that can pre-extract the ink cartridge.

Preferably, the ink cartridge accommodating chamber is provided with an ink cartridge limiting structure, and the ink cartridge limiting structure may be a plurality of limiting plates formed on the inner surface of the sidewall of the upper casing. Further, the bottom of the upper case is further provided with an ink filling needle protection plate movable along the axial direction of the ink filling needle, and the ink filling needle protecting plate has a through hole through which the ink filling needle can pass And a slot through which the limiting plate can pass. The bottom surface of the ink filler protection plate is provided with a positioning groove that can cooperate with the positioning protrusion of the top of the ink cartridge. A guide post is disposed in the upper casing to cooperate with the ink filler needle protection plate, and the guide pillar is sleeved with a spring between the ink filler needle protection plate and the top wall. The bottom of the ink filler protection plate is provided with a seal for sealing the ink filling hole during ink filling.

Preferably, a seal for sealing the nozzle during ink filling is fixed to the base.

The negative pressure ink filling container may be a syringe including an outer cylinder and a push rod reciprocable within the outer cylinder, wherein the push rod is a solid rod or a hollow rod. In addition, the negative pressure ink filling container may also be an ink filling bottle having a negative internal pressure, and the ink filling bottle has a gas guiding film which is torn off during ink filling.

Beneficial effect

The ink filling device of the present invention has the following advantages and benefits:

1. During the ink filling process, the user is not required to touch the ink, and the user's hand and the surrounding environment are not soiled.

2. During the process of filling the ink, the nozzle of the ink cartridge faces downward, which can better ensure that the ink in the ink supply column under the nozzle and the filter screen is filled up, and a good printing effect is achieved.

3, the ink is filled with negative pressure, the amount of ink is the amount of ink that can be sucked into the cavity of the ink cartridge, no less irrigation or more irrigation, no ink leakage and nozzle leakage, and the ink filling effect is also more it is good.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of an ink filling device according to a first embodiment of the present invention.

Figure 2 is an exploded perspective view of the ink filling device of Figure 1.

Figure 3 is a perspective view of the upper casing portion of the ink filling device of Figure 1.

Fig. 4 is a schematic view showing the internal structure of the upper casing portion shown in Fig. 3, showing the ink filler protection plate and the spring.

5 to 8 are schematic views showing the mounting manner of the ink filling device shown in Fig. 1.

Figure 9 is a plan view of the ink filling device of Figure 1.

Fig. 10 is a cross-sectional view taken along line A-A of Fig. 9;

Figure 11 is a cross-sectional view showing an ink filling device according to a second embodiment of the present invention.

Embodiments of the invention

Embodiment 1

Referring to Figures 1 and 2, the ink filling apparatus of the first embodiment includes a base 2 for erecting the ink cartridge 1, an upper casing 3 connected to the base 2, and a syringe 4 pre-filled with ink. The ink cartridge 1 has a plurality of ink filling holes 11 at the top and a nozzle 12 at the bottom, and the ink cartridge 1 has an ink storage chamber 13 therein. The upper case 3 has an ink cartridge accommodating chamber 38 surrounded by a top wall 31 and a side wall 32, and a lower portion of the ink cartridge accommodating chamber 38 has an open structure. A plurality of limiting plates 381 are disposed on the inner surface of the side wall 32 of the upper casing 3, and the ink cartridge 1 placed in the ink cartridge accommodating chamber 38 can be restrained from four directions.

Referring to FIG. 3 and FIG. 4, a plurality of ink filling needles 33 are inserted into the top wall 31 of the upper casing 3, and the ink filling needles 33 can be inserted into the ink storage chamber 13 inside the ink cartridge 1 by the ink filling holes 11 at the top of the ink cartridge 1. To establish an ink filling channel. The top wall 31 is further provided with a plurality of tubular ink filling interfaces 34 at positions corresponding to the ink filling needles 33. When filling the ink, the top of the ink filling needles 33 passes through the ink filling interface 34 and the ink outlet of the bottom of the syringe 4. 41 docking. A buckle 36 is disposed on each of the lower end sides of the side wall 32.

The bottom of the upper casing 3 is further provided with an ink filler protection plate 39 movable along the axial direction of the ink filling needle 33, and the ink filler needle protection plate 39 has a through hole 391 through which the ink filling needle 33 can pass and The slot 392 through which the limiting plate 381 passes. The upper shell 3 is further provided with two guiding columns 382 which cooperate with the filling needle protection plate 39. The top ends of the two guiding columns 382 are fixed to the bottom surface of the top wall 31, and the two guiding columns 382 are respectively sleeved with the ink filling needles. A spring 37 between the protection plate 39 and the top wall 31. The ink filling needle protection plate 39 can prevent the ink filling needle 33 from being exposed and wounded during the installation process of the ink filling device, and is safer to use.

The bottom surface of the ink filler protection plate 39 is provided with a positioning groove 393 which can cooperate with the positioning protrusion 13 on the top of the ink cartridge 1. Further, a seal member 35 for sealing the ink filling hole 11 at the top of the ink cartridge 1 at the time of ink filling is further provided at the bottom of the ink filling needle protecting plate 39.

The base 2 is provided with a recess 22 that cooperates with the nozzle 12 of the ink cartridge 1, and the bottom of the recess 22 is fixed with a silicone pad 23 for sealing the nozzle 12 during ink filling. Each of the two ends of the base 2 is provided with a fastening member 21, and each of the fastening members 21 has a fastening hole for engaging with the buckle 36.

The syringe 4 includes an outer cylinder 41 and a hollow push rod 42 reciprocally movable within the outer cylinder 41. The cavity 421 in the push rod 42 communicates with the inner chamber 411 of the outer cylinder 41.

Referring to FIG. 5 to FIG. 10, the usage method of the first embodiment is as follows:

1. The ink cartridge 1 is mounted upwardly to the upper casing 3, and the positioning projection 13 on the top of the ink cartridge 1 is aligned with the positioning groove 393 on the bottom surface of the ink filler protection plate 39;

2. The ink cartridge 1 is pressed into the ink cartridge accommodating chamber 38 of the upper casing 3 against the resistance of the spring 37. During the pressing process, the ink filling needle 33 on the upper casing 3 is inserted into the ink storage chamber 13 of the ink cartridge 1, and the upper casing The plurality of limiting plates 381 on the inner surface of the side wall 32 serve to limit and guide the ink cartridge 1. The sealing member 35 at the bottom of the ink filling needle protecting plate 39 seals the periphery of the ink filling hole 11 at the top of the ink cartridge 1;

3. After the ink cartridge 1 is loaded into the ink cartridge accommodating chamber 38, the base 2 is attached to the upper casing 3, and the fastener 21 of the base 2 is fastened to the buckle 36 of the upper casing 3, and the silicone pad 23 in the base 2 is just right. The nozzle 12 of the ink cartridge 1 is sealed to seal it.

4. Turn the upper casing 3 over so that the ink filling interface 34 faces upwards;

5. Insert the syringe 4 into the ink filling port 34 of the upper casing 3, pull up the hollow push rod 42 of the syringe 4, and extract the gas in the ink storage chamber 13 of the ink cartridge 1, and the outer cylinder 41 is pre-loaded with three points. One of the left and right inks can be seen to have bubbles rising, indicating that the negative pressure is applied to the ink storage chamber 13. When the hollow push rod 42 is pulled to the top end of the outer cylinder 41, the hollow push rod 42 is released, and at this time, the hollow push rod 42 goes down under the atmospheric pressure of the outside, and the ink in the syringe 4 is also pressed to the ink cartridge. 1 inside the ink chamber 13.

Embodiment 2

Referring to Figure 11, the base 2 and the upper casing 3 of the present embodiment are substantially the same as those of the first embodiment. The difference is mainly that the ink bottle 5 is used in place of the syringe 4 in the embodiment, and the ink bottle 5 is internally pumped with a negative Pressing a negative pressure ink bottle (for example, -90 KPA) to pre-charge the ink cartridge 1 before filling, and the top of the ink bottle 5 is provided with an air guiding groove 54 and a guide for sealing the air guiding groove 54. The gas film 52 is torn off during the ink filling, and the sealing plug assembly 53 is disposed in the ink outlet 51 at the bottom of the ink filling bottle 5. When filling the ink, as long as the ink outlet 51 at the bottom of the ink filling bottle 5 is docked with the ink filling interface 34, the top of the ink filling needle 33 passes through the sealing plug assembly 53 and is inserted into the ink filling bottle 5 with a negative pressure. The ink filling bottle 5 first extracts the air in the ink storage chamber 13 of the ink cartridge 1, and then tears off the air guiding film 52 on the ink filling bottle 5, and ink in the ink filling bottle 4 under the pressure of the outside atmosphere. It is automatically sucked into the ink cartridge 1 to complete the filling of the ink.

The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept. The scope of protection.

Industrial applicability

The ink filling device of the invention does not need the user to contact the ink during the ink filling process, and is convenient to use and clean and sanitary; the ink is filled by the negative pressure, and the ink filling amount is the ink amount that the ink cartridge cavity can suck in, and the irrigation is not less or more irrigation. There is no ink leakage and nozzle leakage, and the ink filling effect is better.

Claims (10)

An ink filling device for an ink cartridge, comprising a base, an upper case connected to the base, and an ink filling container for accommodating the ink, wherein the upper case has an ink cartridge accommodating cavity for placing the ink cartridge, the upper case The top wall is further provided with an ink filling interface for interfacing with the ink outlet of the ink filling container and an ink filling needle for inserting an ink filling hole on the ink container, the ink filling container is for the ink container Pre-extracted negative pressure ink filling container. The ink filling device according to claim 1, wherein the ink cartridge accommodating chamber is provided with an ink cartridge limiting structure. The ink filling device according to claim 2, wherein the ink cartridge limiting structure is a plurality of limiting plates formed on an inner surface of the side wall of the upper casing. The ink filling device according to claim 3, wherein the bottom of the upper case is further provided with an ink filling needle protection plate movable along the axial direction of the ink filling needle, and the ink filling needle protection plate has a through hole through which the ink filling needle passes and a slot through which the limiting plate can pass. The ink filling device according to claim 4, wherein the bottom surface of the ink filler protection plate is provided with a positioning groove engageable with the positioning protrusion of the top of the ink cartridge. The ink filling device according to claim 4, wherein a guide post is disposed in the upper casing to cooperate with the ink filler needle protection plate, and the guide pillar is sleeved on the ink filler needle protection plate. a spring between the top wall. The ink filling device according to claim 6, wherein the bottom of the ink filler protection plate is provided with a sealing member for sealing the ink filling hole during ink filling. The ink filling device according to claim 1, wherein a seal for sealing a nozzle of the ink cartridge during ink filling is fixed to the base. The ink filling device according to claim 1, wherein said negative pressure ink filling container is a syringe, said syringe comprising an outer cylinder and a push rod reciprocable within said outer cylinder, wherein said push rod is solid Rod or hollow rod. The ink filling device according to claim 1, wherein the negative pressure ink filling container is an ink filling bottle having a negative internal pressure, and the ink filling bottle has a gas guiding film which is torn off during ink filling.

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