CN106142847B - Continuous ink supply system - Google Patents

Abstract

The present invention relates to a continuous ink supply system, comprising an ink cartridge, a connecting device and an ink supplement box; the connecting seat of the connecting device has a base plate arranged between a docking cylinder and a liquid-gas interface tube, and has a buckle lug groove; the central tube column is arranged in the docking cylinder and the liquid-gas interface tube, and has an ink flow channel and an air flow channel; the buckle seat has a cylindrical body, an inner flange and an outer flange arranged on the inner edge of its opening; the ink supplement box has a box mouth, and a protrusion is arranged on the outer side of the box; the buckle seat of the connecting device is arranged on the connecting seat, so that the box mouth of the ink supplement box is placed into the opening of the buckle seat, and rotated so that the outer flange of the buckle seat corresponds to the buckle lug groove of the connecting seat, and the inner flange corresponds to the protrusion of the ink supplement box, so that the ink supplement box can be connected and positioned through the connecting device and connected to the ink cartridge to perform continuous ink supply.

Description

continuous ink supply system

【Technical field】

The invention relates to a continuous ink supply system, in particular to a continuous ink supply system which uses the principle of internal pressure balance to achieve simplified structure and allow users to easily replace replenishment bottles.

【Background technique】

In general, inkjet printers are popular among consumers due to their advantages of easy operation and the ability to print on a variety of inkjet media. However, after an inkjet printer has been used for a period of time, the ink cartridges must be replaced due to the exhaustion of the ink cartridges. At present, the common replacement method is to discard the old ink cartridge and install a brand-new ink cartridge to provide ink, which not only causes waste of the ink cartridge body, but also increases the user's expense invisiblely because of the high price of the ink cartridge. In order to save printing costs, avoid waste of resources and conform to the trend of environmental protection, a continuous ink supply system that reuses the same ink cartridge was born accordingly.

The known continuous ink supply system mainly uses pump or siphon to supply ink continuously. Taking siphon as an example, it mainly transports the ink from the outer ink tank through the ink supply tube to the ink tank installed in the printer. In the ink cartridge, the main principle is to use the ink cartridge of the printer to continuously deliver ink to the inkjet head during printing, and at the same time, the ink cartridge also sucks ink of the same capacity from the outer ink cartridge to replenish the balance, that is, the amount of ink delivered to the inkjet head by the ink cartridge is replenished in real time How much ink goes in.

However, the disadvantage of the conventional siphon type continuous ink supply method is that when the ink stored in the outer ink cartridge is used up, it must be replaced by disassembling the ink cartridge or the ink supply tube between the outer ink cartridge and the ink cartridge. In the process of replacing the ink supply cartridge, the connection of the pipeline will cause sealing problems due to the replacement, and the negative pressure of the internal pipe part will be different from the original ink supply. The pressure difference of pipeline disassembly and assembly many times causes the negative pressure to gradually disappear and ink leakage occurs, which in turn leads to abnormal printing quality.

As for another continuous ink supply system using a pump, it mainly pumps the ink from the outer ink cartridge into the ink cartridge by means of pump pressurization. In addition to being expensive, other devices must be used to control the operation of the pump, which will increase the manufacturing cost. In addition, when the pump type continuous ink supply system is used, the pump must be driven by electricity, so its cost is relatively increased, and the pump suction is also difficult to reach the corner of the outer ink cartridge, so the corner of the outer ink cartridge It is easy to leave residual ink everywhere, which indirectly causes the waste of ink. In addition, due to the complex structure of the pump, it must be cleaned, repaired and maintained regularly. Furthermore, once the pump breaks down, due to the time-consuming maintenance, the continuous ink supply system will not be able to supply ink normally during the maintenance period, thereby affecting the operation and printing quality of the inkjet printer. Therefore, it is known that the continuous ink supply system using the pump method not only has complicated operation control methods and high installation costs, but also requires a large space for installation, and also has disadvantages such as bulkiness.

In order to improve the lack of the aforementioned siphon and pump continuous ink supply systems, and reduce the volume and manufacturing cost of the continuous ink supply system, the continuous liquid supply system of TW I358361 patent provides a composition structure of the connecting device, that is, it is connected with Combination relation of ink cartridge body. As shown in Figure 1, the continuous ink supply system is mainly composed of an ink cartridge body 1, a connecting structure 2 and an ink replenishment box 3, wherein the connecting structure 2 is used to connect the ink replenishing box 3 and the ink cartridge body 1, and the connecting structure 2 is composed of The connecting seat 21, the cylinder base 22 and the fixing base 23 are composed of multiple components, wherein the fixing base 23 is used to fix the cylinder base 22 on the ink cartridge body 1. The fixing base 23 has a ring 231, the ring The inner diameter of 231 is greater than or equal to the outer diameter of the barrel base 22 and smaller than the outer diameter of the outer flange 222 at the bottom of the barrel seat 22 . The inner circular wall of the ring 231 has a notch 2311, and the vertical side wall of the cylinder base 22 has a protruding post 223, and there is a gap between the protruding post 223 and the outer flange 222, and the gap is slightly larger than the The thickness of the ring 231. In addition, an inner groove 232 is formed under the ring 231 . When the connection structure 2 is assembled, first place the cylinder base 22 on the periphery of the cylinder body 211 of the connection base 21, and then place the fixing base 23 from top to bottom. At this time, the protrusions 223 of the cylinder base 22 are fixed by corresponding The notch 2311 of the seat 23 finally makes the ring 231 cover the outer periphery of the outer flange 222 of the cylinder seat 22, and the outer flange 222 of the cylinder seat 22 is limited in the inner edge groove 232 of the fixed seat 23, and then The fixing seat 23 is fixed on the ink cartridge body 1 through the fixing assembly, so as to form a connection device 2 arranged on the ink cartridge body 1 . However, in this prior art, the sleeve base 22 and the fixing base 23 cooperate with each other to fix the assembly, which is not only too complicated in design, but also when the sleeve base 22 and the fixing base 23 are assembled, although the position of the sleeve base 22 is restricted, its It is not completely fixed, and still rotates within a specific angle range. In addition, the fixed seat 23 still needs to be fixed on the ink cartridge body 1 by means of a fixed component, and the assembly operation is relatively inconvenient. When the ink refill cartridge 3 is used, it is necessary to use both hands to carefully pick and place and carry out cumbersome fixing procedures, otherwise it is easy to let residual ink splash and dirty hands and clothes when pulling out, which is extremely inconvenient.

Therefore, how to develop a continuous ink supply system that can improve the above-mentioned deficiencies in the prior art is an urgent problem to be solved at present.

【Content of invention】

The main purpose of the present invention is to provide a continuous ink supply device to solve many disadvantages of the conventional continuous ink supply system, such as bulky volume, complicated parts, high manufacturing cost and inconvenient assembly.

Another object of the present invention is to provide a continuous ink supply device, through the connection device with a simple structure, the user can conveniently and easily set the ink replenishment box on the ink cartridge, and the ink can be filled by the principle of gravity and pressure balance. The ink cartridge can be continuously injected until it stops at a specific height, so as to achieve the effects of automatic continuous ink supply operation, simple assembly procedure, convenient operation and low cost.

In order to achieve the above-mentioned purpose, a more broad implementation aspect of the present invention is to provide a continuous ink supply system, comprising: an ink cartridge with a chamber and an injection port; a connecting device, including: a connection seat, which is positioned corresponding to the injection port inserted into the ink cartridge , with a docking cylinder, a base plate, a liquid-gas interface tube and a central column, wherein the liquid-gas interface tube is correspondingly placed in the chamber of the ink cartridge and communicated with it, the base plate is arranged between the docking cylinder and the liquid-gas interface tube, and the base plate There are buckle lug grooves on the top, and the central pipe column is axially extended in the docking cylinder and the liquid-air interface tube, and the central pipe column has ink flow channels and air flow channels, and the ink flow channels and air flow channels are respectively Independently set and run through the central pipe column; and a buckle seat with a cylindrical body, an outer flange is provided on the outer edge below the cylindrical body, and an inner flange is provided on the inner edge of the opening above the cylindrical body; and an ink replenishment box , connected to the ink cartridge in the connection device, has a box mouth, and a protrusion is provided outside the box mouth; thereby, the buckle seat of the connection device is correspondingly arranged on the connection seat, and the box mouth of the ink replenishment box is correspondingly inserted The opening of the buckle seat is closed, and rotated so that the outer flange of the buckle seat corresponds to the buckle lug groove of the connection seat, and the inner flange of the buckle seat corresponds to the top of the projection of the ink refill box, for The ink replenishment cartridge is directly connected and positioned through the connecting device to communicate with the ink cartridge for continuous ink supply.

【Description of drawings】

Fig. 1: It is the composition structure of a conventional connection device, that is, a three-dimensional exploded view of its combined relationship with the ink cartridge body.

Fig. 2: It is a schematic diagram of the exploded structure of the continuous ink supply system of the first preferred embodiment of the present invention. FIG. 3 : It is a schematic cross-sectional structure diagram of the connecting seat of the connecting device shown in FIG. 2 .

Fig. 4: It is a schematic diagram of the completed assembly of the continuous ink supply system shown in Fig. 2 .

Fig. 5: It is a schematic cross-sectional structure diagram of the continuous ink supply system shown in Fig. 4 .

FIG. 6A : It is a schematic diagram of the ink cartridge shown in FIG. 5 where the ink level is lower than the liquid-air interface tube.

FIG. 6B : It is a schematic diagram showing that the ink height of the ink cartridge shown in FIG. 5 is flush with the liquid-air interface tube. Fig. 7: It is a schematic cross-sectional structure diagram of the continuous ink supply system of the second preferred embodiment of the present invention. FIG. 8A : It is a schematic diagram of the ink cartridge shown in FIG. 7 where the ink level is lower than the liquid-air interface tube.

FIG. 8B : It is a schematic diagram showing that the ink height of the ink cartridge shown in FIG. 7 is flush with the liquid-air interface tube.

【Symbol Description】

1: Cartridge body

2: Connection structure

21: Connection seat

211: barrel

22: barrel seat

222: outer flange

223: Pillar

23: Fixed seat

231: Ring

2311: notch

232: inner edge groove

3: Ink replenishment cartridge

4, 8: Continuous ink supply system

5: Cartridge

50: injection port

51: chamber

52: Filter structure

6: Ink replenishment cartridge

60: box mouth

61: Bump

62, 710a, 710b, 720a, 723a, 923a: opening

63: box mouth plug

7, 9: Connection device

71, 91: buckle seat

710, 910: cylindrical body

711, 911: inner flange

712, 912: outer flange

713, 913: Positioning stop post

714, 715: Auxiliary boards

72, 92: connecting seat

720, 920: docking cylinder

721, 921: center string

722, 922: substrate

723, 923: liquid-gas interface tube

724, 924: stop

725, 925: Buckle lug groove

725a: Accommodating groove

726, 926: air channel

726a, 727a: Entrance

726b, 727b: Export

727, 927: ink flow channel

【Detailed ways】

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention is capable of various changes in different aspects without departing from the scope of the present invention, and that the description and illustrations therein are illustrative in nature and not restrictive. this invention.

Please refer to FIG. 2 , which is a schematic exploded view of the continuous ink supply system according to the first preferred embodiment of the present invention. As shown in the figure, the continuous ink supply system 4 of the present invention is composed of an ink cartridge 5, a connecting device 7 and an ink replenishment box 6, wherein the ink cartridge 5 has a chamber 51 (as shown in FIG. 5 ) and an injection port 50 . The connecting device 7 is mainly composed of a connecting seat 72 and a buckle seat 71. The connecting seat 72 has a docking cylinder 720, a base plate 722, a liquid-gas interface tube 723 and a central column 721, wherein the base plate 722 is arranged on the docking cylinder 720 and the liquid-gas interface tube 723, and at least one buckle lug groove 725 is provided on the base plate 722, and the central column 721 is axially extended and arranged in the docking cylinder 720 and the liquid-gas interface tube 723 , and the central column 721 has an ink channel 727 and an air channel 726 (as shown in Figure 3 ), the ink channel 727 and the air channel 726 are set independently of each other and run through the central column 721; the buckle seat 71 Then, it has a cylindrical body 710 , and at least one outer flange 712 is disposed on the lower outer edge of the cylindrical body 710 . As for the ink replenishment box 6, it is correspondingly connected and arranged on the connection device 7; wherein, the buckle seat 71 of the connection device 7 is correspondingly arranged on the connection seat 72, so that the outer flange 712 of the buckle seat 71 corresponds to the connection seat 72. Buckle the lug groove 725, and at the same time set the ink replenishment box 6 on the buckle seat 71 correspondingly, by rotating the buckle seat 71, the ink replenishment box 6 and the connection seat 72 are connected to each other and rotated, and then the connecting device 7 is set corresponding to the injection port 50 of the ink cartridge 5, and then the central column 721 of the connecting seat 72 is set in the ink replenishment box 6, and the liquid-gas interface tube 723 is set in the chamber 51 of the ink cartridge 5, and passes through the central tube The ink flow path 727 in the post 721 injects ink from the ink replenishment box 6 into the ink cartridge 5, and the air in the chamber 51 of the ink cartridge 5 is input into the ink cartridge 6 by the air flow path 726, so that gravity and pressure are balanced The principle is to continuously inject ink into the ink cartridge 5 and adjust the ink height in the ink cartridge 5 .

Please refer to FIG. 2 and FIG. 3 at the same time. FIG. 3 is a schematic cross-sectional structure diagram of the connecting seat of the connecting device shown in FIG. 2 . As shown in the figure, the connection seat 72 of the connection device 7 of the present invention has structures such as a docking cylinder 720, a base plate 722, a liquid-gas interface tube 723, and a central column 721, wherein the docking cylinder 720 and the liquid-gas interface tube 723 They are all hollow cylindrical structures, but not limited thereto, and the upper side of the docking cylinder 720 has an opening 720a, and the lower side of the liquid-gas interface tube 723 has an opening 723a. The base plate 722 is arranged between the docking cylinder 720 and the liquid-air interface tube 723, and extends to the left and right sides respectively. In this embodiment, a buckle lug is respectively provided on the left and right sides of the base plate 722. Groove 725, the shape of the buckle lug groove 725 is a circular arc corresponding to the docking cylinder 720, and it is an arc-shaped convex groove structure, so as to be jointly defined with the base plate 22 and the docking cylinder 720 An accommodating groove 725a is provided, but the number and shape of the buckling lug groove 725 are not limited thereto, and it can be changed arbitrarily according to the actual implementation situation. And in some embodiments, the end of the buckle lug groove 725 can further be provided with a stopper 724, but not limited thereto.

Please continue to refer to FIG. 3 , as shown in the figure, the central pipe column 721 is axially extended and arranged in the docking cylinder 720 and the liquid-gas interface pipe 723, which can be but not limited to a pointed top structure, And the bottom of the central column 721 is disposed in the liquid-gas interface tube 723 , that is, the position of the opening 723 a at the bottom of the liquid-gas interface tube 723 is lower than the position of the bottom of the central column 721 . And there are two ink channels 727 and air channels 726 which are independently arranged and run through the center column 721 in the central tube column 721, wherein the ink channel 727 has an inlet 727a and an outlet 727b, for ink to be input from the inlet 727a, and It is output by the outlet 727b; the air passage 726 also has an inlet 726a and an outlet 726b, for the air to be imported from the inlet 727a and output from the outlet 727b, but the inlet 726a of the air passage 726 is arranged below the center column 721, i.e. In order to be installed in the liquid-air interface tube 723 , the outlet 726 b is installed above the central column 721 , that is, in the docking cylinder 720 , which is opposite to the inlet 727 a and outlet 727 b of the ink channel 727 .

In some embodiments, the diameter of the liquid-air interface tube 723 of the connecting seat 72 is approximately equal to or smaller than the injection port 50 of the ink cartridge 5, so that when the connecting seat 72 and the ink cartridge 5 are correspondingly assembled, the liquid-air interface can be connected. The tube 723 is correspondingly disposed in the injection port 50 , and locks the base plate 722 of the connection base 72 through a fixing component (not shown), so that the connection base 72 is locked and fixed corresponding to the ink cartridge 5 .

Please refer to Fig. 2 again, as shown in the figure, the buckle seat 71 of the connecting device 7 of the present invention is a circular, hollow cylindrical structure, which has a cylindrical body 710, and has Through openings 710a, 710b. In some embodiments, the inner edge of the upper opening 710a further has an inner flange 711. Taking this embodiment as an example, the inner edge of the opening 710a of the cylindrical body 710 of the present invention has two symmetrically arranged inner flanges. 711, and the inner flange 711 is an arc-shaped convex structure for corresponding engagement with the bump 61 on the ink refill cartridge 6, but the shape and quantity of the inner flange 711 are not limited thereto. And, the outer edge below the cylindrical body 710 is further provided with at least one outer flange 712. Taking this embodiment as an example, the outer flange 712 is two arc-shaped convex structures arranged symmetrically on the outer side of the cylindrical body 710 for providing It is connected with the two buckle lug grooves 725 on the base plate 722 of the connecting seat 72 by corresponding rotation. However, the shape and quantity of the outer flange 712 are not limited to this, and it can be determined according to the actual implementation situation. Any change.

As shown in FIG. 2 , the cylindrical body 710 of the buckle seat 71 further has at least one positioning block 713 , and the positioning block 713 is connected to one end of the outer flange 712 for connection and positioning. And in some other embodiments, at least one auxiliary plate 714, 715 can be provided on the cylindrical body 710, and the auxiliary plate 714, 715 can be used to assist the user to hold and rotate, and can also be arranged on the The end of the outer flange 712 is used for fixing and positioning, and its quantity, shape and arrangement are not limited thereto.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 at the same time. FIG. 4 is a schematic diagram of the completed assembly of the continuous ink supply system shown in FIG. 2 . In this embodiment, the inner diameter of the cylindrical body 710 of the buckle seat 71 is equal to or slightly larger than the outer diameter of the docking cylinder 720 of the connection seat 72, so when the buckle seat 71 and the connection seat 72 are assembled correspondingly, the The cylindrical body 710 of the buckle seat 71 can be sleeved on the docking cylinder 720 of the connection seat 72 , and the outer flange 712 below the cylindrical body 710 is first correspondingly arranged on the buckle lug of the base plate 722 of the connection seat 72 In addition to the groove 725, rotate the cylindrical body 710 so that the outer flange 712 can be rotatably embedded in the receiving groove 725a of the buckle lug groove 725, and rotate to a position so that the cylindrical body 710 The positioning stop post 713 is set against the stopper 724 at the end of the buckle lug groove 725, so as to limit the angle of rotation of the outer flange 712 of the buckle seat 71, so that the buckle seat 71 and the connection seat 72 are connected to each other Fitted and positioned; and when the buckle seat 71 is about to be disengaged from the connection seat 72, it can be reversely rotated, so that the outer flange 712 of the buckle seat 71 rotates to the outside of the buckle lug groove 725 of the connection seat 72. The space means that the outer flange 712 is separated from the accommodating groove 725a, and then pulled upwards to complete the separation.

Please also refer to Fig. 2 and Fig. 4, as shown in the figure, the ink replenishment box 6 has a box mouth 60, and at least one protrusion 61 is provided on the outside of the box mouth 60, and in this embodiment, the protrusion 61 is two The arc-shaped protrusion structure is symmetrically arranged on the outside of the box mouth 60, but not limited thereto. The mouth portion 60 further has an opening 62 , and a mouth plug 63 (as shown in FIG. 5 ) is further provided in the opening 62 to close the opening 62 and prevent the ink in the ink replenishment box 6 from leaking or evaporating. When the ink replenishment box 6 is correspondingly arranged on the connection device 7, the mouth 60 of the ink replenishment box 6 is set corresponding to the opening 710a above the cylindrical body 710 of the buckle seat 71, and the mouth of the box is set. The protrusion 61 on the outer side of 60 is firstly arranged on the outside of the inner flange 711 of the cylindrical body 710 of the buckle seat 71 correspondingly, and the inner flange 711 is buckled and positioned by rotating the cylindrical body 710 of the buckle seat 71 Above the projection 61 of the box mouth 60 , they fit together in such a way that the ink replenishment box 6 and the buckle seat 71 are fixedly assembled.

Please refer to FIG. 5 , which is a schematic cross-sectional structure diagram of the continuous ink supply system shown in FIG. 4 . As mentioned above, when the connecting device 7 connects and fixes the ink refill box 6 and the ink cartridge 5, it can assemble and fix each component one by one, or directly rotate the buckle seat 71 of the connecting device 7 to make the card The inner flange 711 of the cylindrical body 710 of the buckle seat 71 is correspondingly fastened on the projection 61 of the box mouth 60 of the ink replenishment cartridge 6, and at the same time the outer flange 712 of the cylindrical body 710 of the buckle seat 71 Rotate and fit into the buckle lug groove 725 of the base plate 722 of the connecting seat 72 to simultaneously assemble and fix the ink replenishment cartridge 6 with the buckle seat 71 and the connecting seat 72; after that, the connecting seat 72 is locked on the Above the ink cartridge 5, as shown in Figure 5, the central column 721 of the connecting seat 72 is arranged in the ink replenishment cartridge 6, and the liquid-air interface tube 723 of the connecting seat 72 is correspondingly arranged in the cavity of the ink cartridge 5 Room 51. In this embodiment, in addition to the chamber 51 and the inlet 50 on the top of the ink cartridge 5, an output port (not shown) is further provided on the side of the ink cartridge 5 or at other appropriate positions for the ink cartridge 5 to be installed in the printer. (not shown) or the inkjet system (not shown) of other inkjet equipment, and in some embodiments, there is a filter 52 in the chamber 51 of the ink cartridge 5, the filter 52 can be but not It is limited to be arranged at the bottom of the chamber 51 of the ink cartridge 5 for filtering ink impurities, and can also be used to adjust the internal pressure of the chamber 51. In addition, in some other embodiments, the filtering device can even be connected with an external The pipeline (not shown) is connected to a collection tank (not shown) to store the filtered ink impurities therein.

In this embodiment, as shown in FIG. 5 , the continuous ink supply system 4 further includes an ink filling tube 728, which is sleeved on the outlet 727b of the ink flow channel 727 of the central column 721 of the connecting seat 72 (as shown in FIG. 3 ). shown), and extended in the chamber 51 of the ink cartridge 5, so that the end of the ink filling tube 728 is lower than the opening 723a of the liquid-air interface tube 723, so that the ink can be guided from the ink replenishment box 6 to the central column. The inlet 727a of the ink flow channel 727 of 721 flows in, and then injects in the chamber 51 of ink cartridge 5 through the ink filling tube 728 below the ink flow channel 727 .

Please refer to Figure 6A and Figure 6B at the same time, Figure 6A is a schematic diagram of the ink cartridge shown in Figure 5 where the ink height is lower than the liquid-air interface tube, and Figure 6B is a schematic diagram of the ink cartridge shown in Figure 5 where the ink height is flush with the liquid-air interface tube schematic diagram. As shown in Figure 6A, when the amount of ink in the chamber 51 of the ink cartridge 5 has been used until its liquid level drops below the opening 723a of the liquid-air interface tube 723, that is, the ink height h is lower than the liquid-air interface of the connecting seat 72 723, at this time, the ink replenishment box 6 is connected to the connection device 7, and the ink in the ink replenishment box 6 will continue to flow from the inlet 727a of the ink flow channel 727 of the central column 721 of the connection seat 72 due to gravity. Inflow, and through the ink flow channel 727 and the connected ink pipe 728 to inject in the chamber 51 of the ink cartridge 5, at the same time, the air in the chamber 51 of the ink cartridge 5 will also flow from the air flow channel 726 of the central column 721 The inlet 726a is input, and the outlet 726b is output to the ink replenishment box 6, so as to regulate the pressure, and the ink in the ink replenishment box 6 can be smoothly and continuously injected into the ink cartridge 5 by the convection of this cycle , until the ink liquid level in the chamber 51 of the ink cartridge 5 has risen to contact the opening 723a of the liquid-air interface tube 723 (as shown in Figure 6B), at this time, the ink height h in the chamber 51 has been flush with the liquid The opening 723a of the air interface tube 723 and the opening 723a are closed, so the air inside the chamber 51 of the ink cartridge 5 can no longer be input into the ink replenishment box 6 through the air flow channel 726 and stop convection. In response to pressure balance, the ink The refill cartridge 6 automatically stops the action of injecting ink into the chamber 51 of the ink cartridge 5 . In other words, as long as a small amount of ink in the chamber 51 of the ink cartridge 5 is used, the ink replenishment box 6 will be automatically replenished with ink because the liquid level drops. And when the user finds that the ink of the ink replenishment box 6 is exhausted and removes it to replenish new ink, because there is still some ink in the ink cartridge 5, it is enough to supply the usefulness of printing. Circumstances that cause interruption of printing jobs.

Please refer to FIG. 7 , which is a schematic cross-sectional structure diagram of a continuous ink supply system according to a second preferred embodiment of the present invention. As shown in the figure, the continuous ink supply system 8 of the present invention is also assembled by the ink cartridge 5, the connecting device 9 and the ink replenishment box 6, wherein the structure and arrangement of the ink cartridge 5 and the ink replenishment box are the same as those of the foregoing embodiments , so it is not repeated here.

The connection device 9 is also assembled by the connection seat 92 and the buckle seat 91, and the connection seat 92 also has a docking cylinder 920, a base plate 922, a liquid-air interface tube 923 and a central column 921, and the base plate 922 has a buckle The lug groove 925 and the end of the buckle lug groove 925 have a stopper 924, and the central column 921 has an ink flow channel 927 and an air flow channel 926, and the buckle seat 91 also has a cylinder seat body 910 and an inner flange 911 , the outer flange 912, the positioning retaining post 913, etc. In this embodiment, the structure and assembly method of the connection seat 92 and the buckle seat 91 are generally the same as those of the previous embodiment, so it will not be repeated here. However, in this embodiment, the ink channel 927 of the central tube column 921 of the connecting seat 92 is a downwardly extending tubular structure, and its end is protruded below the liquid-air interface tube 923 of the connecting seat 92 . In other words, the end of the ink channel 927 is lower than the opening 923a of the liquid-air interface tube 923 and is disposed in the chamber 51 of the ink cartridge 5, so it does not need an additional ink filling tube 728 as in the previous embodiment.

Please refer to Figure 8A and Figure 8B at the same time, Figure 8A is a schematic diagram of the ink cartridge shown in Figure 7 where the ink height is lower than the liquid-air interface tube, and Figure 8B is a schematic diagram of the ink cartridge shown in Figure 7 where the ink height is flush with the liquid-air interface tube schematic diagram. As shown in Figure 8A, when the ink height h in the chamber 51 of the ink cartridge 5 is lower than the liquid-air interface tube 923 of the connecting seat 92, at this time, the ink in the ink replenishment box 6 will continue to flow from the connecting seat due to gravity. The ink channel 927 of the center column 921 of 92 is injected into the chamber 51 of the ink cartridge 5, and at the same time, the air in the chamber 51 of the ink cartridge 5 will also be imported into the ink replenishment box 6 by the air channel 926 of the center column 921 , so as to adjust the pressure, and through this cyclic convection, the ink in the ink replenishment box 6 can be smoothly and continuously injected into the ink cartridge 5 until the ink height h in the chamber 51 of the ink cartridge 5 is equal Open the opening 923a of the liquid-air interface tube 923 (as shown in Figure 6B), and close the opening 923a, so the air inside the chamber 51 of the ink cartridge 5 can no longer be input into the ink replenishment box 6 through the air flow channel 926 and stop. Convection, in response to pressure balance, the ink replenishment box 6 automatically stops the action of injecting ink into the chamber 51 of the ink cartridge 5 . In this way, it can be seen that the continuous ink supply system 8 of this embodiment can automatically control the airflow by connecting the central column 921 of the device 9, so that the ink can be continuously injected into the ink cartridge 5, and the ink level reaches a certain level. When the height is high (that is, when it is flush with the opening 923a of the liquid-air interface tube 923), the injection of ink is automatically stopped, and when the liquid level is lower than the specified height, the ink is automatically replenished, so as to achieve simple structure, easy assembly, and automatic control. The air pressure is adjusted to achieve the purpose of continuous ink supply.

To sum up, the present invention provides a continuous ink supply system, which includes an ink cartridge, a connection device and an ink replenishment box, through the connection seat and buckle seat with a simple structure in the connection device, and the corresponding inner flange , outer flange, buckle lug groove and other rotating clamping structure, for the user to easily fasten the ink replenishment cartridge and the connecting device by simply rotating the buckle seat, and even operate with one hand This rotating fastening operation is based on the fact that compared with the conventional technology, the connection device of the continuous ink supply system of the present invention does not need to be additionally provided with a fixing seat to fix the connection device with the ink replenishment box and the ink cartridge, which not only can effectively save costs , and at the same time reduce the procedures for setting and locking the fixing seat, making the operation easier. Therefore, the continuous ink supply system of the present invention allows the user to conveniently and easily set the ink replenishment box on the ink cartridge, and through the principle of gravity and pressure balance, the ink can be continuously injected into the ink cartridge until it stops at a specific height , in order to achieve the effect of automatic continuous ink supply operation, simple assembly procedure, convenient operation and low cost.

The present invention can be modified in various ways by those who are familiar with this technology, but all are within the desired protection of the scope of the appended patent application.

Claims (8)

1. a kind of continuous ink-supply system, including：

One print cartridge, there is a chamber and an inlet；

One attachment means, comprising：

A connecting seat, the corresponding inlet positioning for inserting the print cartridge, has a pair of connect cylinder bodies, a substrate, a liquid gas interface pipe And a center tubing string, wherein the liquid gas interface pipe are correspondingly placed in the chamber of the print cartridge, and it is in communication, and the substrate is set Be placed between the docking cylinder and the liquid gas interface pipe, be provided with a catch lug grooves on the substrate, and the central tube axis of a cylinder to It is extended in the docking cylinder and the liquid gas interface pipe, and there is an ink flow path and an air stream in the center tubing string Road, the ink flow path and the air flow channel independently set and run through the center tubing string；And

One snap seats, have a cylindrical body, and the lateral border below the cylindrical body is provided with an outward flange, above the cylindrical body One opening interior lateral margin be provided with an inward flange；And

One ink replenishing box, it is connected in the attachment means and connects the print cartridge, there is a casket mouth, one is provided with the outside of the casket mouth Projection；

Whereby, the snap seats of the attachment means are correspondingly arranged on the connecting seat, and the casket mouth of the ink replenishing box It is corresponding to insert in the opening of the snap seats, and rotate and make the outward flange of the snap seats convex corresponding to the catch of the connecting seat Ear slot, while also make the inward flange of the snap seats correspond to above the projection of the ink replenishing box, it is provided with the ink replenishing Casket is directly connected to positioning to connect the print cartridge, to carry out continuous ink feeding by the attachment means.

2. continuous ink-supply system as claimed in claim 1, it is characterised in that one is had more on the cylindrical body of the snap seats Bumping post is positioned, and the one end of the catch lug grooves of the connecting seat is provided with a block, when the outward flange of the snap seats is corresponding When the catch lug grooves of the connecting seat are rotated, the positioning bumping post can be made to be resisted against the block, as the snap seats with The positioning position reference that the connecting seat is fitted together to each other.

3. continuous ink-supply system as claimed in claim 1, it is characterised in that had more in the casket mouth of the ink replenishing box One casket mouth stuffed, it is correspondingly arranged in an opening of the casket mouth.

4. continuous ink-supply system as claimed in claim 1, it is characterised in that the continuous ink-supply system further includes a refilling pipe, its An outlet of the ink flow path of the center tubing string of the connecting seat of the attachment means is socketed on, and is arranged at being somebody's turn to do for the print cartridge In chamber, injected to directing fluid in the chamber.

5. continuous ink-supply system as claimed in claim 1, it is characterised in that the central tube of the connecting seat of the attachment means The ink flow path of post is a tubular structure extended downwards, and extension is protruded under the liquid gas interface pipe of the connecting seat.

6. continuous ink-supply system as claimed in claim 1, it is characterised in that filled in the chamber of the print cartridge with more a filtering Put, to filter ink impurity.

7. continuous ink-supply system as claimed in claim 1, it is characterised in that the ink in the chamber of the print cartridge is highly less than During the liquid gas interface pipe, ink in the ink replenishing box can be in response to gravity and constantly by the center tubing string of the connecting seat The ink flow path is injected in the chamber of the print cartridge, and the air in the chamber of the print cartridge is inputted into the ink by the air flow channel In water supplement casket, to carry out pressure regulation.

8. continuous ink-supply system as claimed in claim 1, it is characterised in that the ink in the chamber of the print cartridge highly flushes When the liquid gas interface pipe, because ink has closed an opening of the liquid gas interface pipe, air can not input from the chamber should In ink replenishing box, it is in response to pressure balance, the ink replenishing box, which is automatically stopped, to be injected in the chamber of the print cartridge.