Waste ink collection box and printing device

Abstract

The present application relates to a waste ink collection box (10) and a printing device. The waste ink collection box (10) comprises a body (11), which has an accommodating cavity (110), and is provided with a liquid intake portion (113), a liquid discharge portion (114) and a deformable first isolation member (1191). The first isolation member (1191) is located inside the accommodating cavity (110), and divides the accommodating cavity (110) into a first chamber (111) and a second chamber (112). The liquid intake portion (113) is in communication with the first chamber (111), and the liquid discharge portion (114) is in communication with the second chamber (112). The first chamber (111) is configured to collect waste liquid, and the second chamber (112) is configured to store maintenance liquid. When the maintenance liquid inside the second chamber (112) is discharged outward by means of the liquid discharge portion (114), the first isolation member (1191) is deformed under the action of the negative pressure of the second chamber (112), causing the volume of the second chamber (112) to decrease and the volume of the first chamber (111) to increase.

Description

Waste ink collecting box and printing device

[0001] The present application claims priority to the Chinese patent application No. 202422354427.3, filed on September 26, 2024, and entitled "Waste ink collecting box and printing device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of printing technology, in particular to a waste ink collecting box and a printing device. BACKGROUND

[0003] With the development of printing technology, various types of printing devices including but not limited to UV printers, inkjet printers, etc. have emerged. After the nozzle of the printing device is used for a period of time or after printing is completed, various maintenance treatments such as cleaning and moisturizing are usually performed on the nozzle to clean the ink in the nozzle in time, so as to avoid the nozzle from being clogged due to the solidification of the ink caused by long-term placement, and even damaged. Therefore, the printing device needs to be equipped with a cleaning liquid storage container for providing cleaning liquid, a moisturizing liquid storage container for providing moisturizing liquid, and a waste liquid recovery container for recovering waste liquid generated after maintenance treatment of the nozzle. However, the increased cleaning liquid storage container, moisturizing liquid storage container and waste liquid recovery container will increase the overall volume of the printing device and occupy more space. SUMMARY

[0004] Therefore, it is necessary to overcome the defects of the prior art and provide a waste ink collecting box and a printing device which can reduce the volume and occupy less space while having the functions of recovering waste liquid and providing maintenance liquid.

[0005] In a first aspect of the present application, a waste ink collecting box is provided, which comprises:

[0006] a body provided with a containing cavity, the body being provided with a liquid inlet portion, a liquid outlet portion and a deformable first partition; the first partition is located inside the containing cavity and separates the containing cavity into a first chamber and a second chamber, the liquid inlet portion is in communication with the first chamber, and the liquid outlet portion is in communication with the second chamber; the first chamber is used for collecting waste liquid, and the second chamber is used for storing maintenance liquid;

[0007] When the maintenance liquid in the second chamber is discharged outward through the liquid outlet portion, the first partition is deformed under the negative pressure of the second chamber, so that the volume of the second chamber is reduced and the volume of the first chamber is increased.

[0008] In a second aspect of the present application, a printing device is also provided, which comprises the waste ink collecting box.

[0009] The waste ink collecting box and the printing device, in use, the liquid discharge part is connected with a liquid discharge pipeline for discharging the maintenance liquid outward, and the liquid inlet part is connected with a recovery pipeline for recovering the waste liquid; when the maintenance liquid in the second chamber is discharged outward through the liquid discharge pipeline and provided to the nozzle, the nozzle is maintained, and meanwhile, the maintenance liquid in the second chamber is discharged to make the internal space smaller, the first partition is deformed under the negative pressure of the second chamber, and the first chamber can collect more waste liquid, so that the first chamber can collect the waste liquid after maintaining the nozzle. Therefore, the waste ink collecting box can not only collect the waste liquid, but also store the maintenance liquid, and after the maintenance liquid is discharged, the volume of the first chamber can be increased to store more waste liquid, so that compared with the structure of multiple box bodies, the overall size can be reduced, the structure is more compact, and the cost can be reduced.

[0010] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0011] To better describe and illustrate the embodiments and / or examples of the present application, reference can be made to one or more drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of the disclosed application, the presently described embodiments and / or examples, and any one of the best modes of these applications presently understood.

[0012] Fig. 1 is a simplified schematic diagram of a waste ink collecting box according to an embodiment of the present application.

[0013] Fig. 2 is an exploded structural diagram of a waste ink collecting box according to an embodiment of the present application.

[0014] Fig. 3 is a structural diagram of a printing device according to an embodiment of the present application from one perspective.

[0015] Fig. 4 is a structural diagram of the structure shown in Fig. 3 from another perspective.

[0016] Fig. 5 is a structural diagram of the ink sac, the second switch valve and the nozzle in the structure shown in Fig. 3. 10: waste ink collecting box; 11: body; 110: containing cavity; 111: first chamber; 1111: first flange; 1112: third flange; 112: second chamber; 113: liquid inlet part; 114: liquid outlet part; 116: mouth wall; 117: partition wall; 1171: second flange; 1172: fourth flange; 118: induction chip; 1191: first partition; 1192: second partition; 12: protective cover; 20: nozzle; 30: ink stack; 40: first pump body; 50: recovery pipeline; 60: second pump body; 70: liquid outlet pipeline; 71: first branch; 72: main pipe; 73: first switch valve; 74: pipeline joint; 80: ink sac; 81: ink inlet part; 82: second switch valve; 821: first access end; 822: second access end; 823: input end; 83: first protective shell; 84: second protective shell; 90: ink cartridge assembly; 91: ink inlet pipe. DETAILED DESCRIPTION

[0017] For the purpose of promoting an understanding of the present application, the present application will be described with reference to the drawings. The preferred embodiments of the present application are illustrated in the drawings. However, the present application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments have been provided for the purpose of explanation only and are not intended to limit the disclosure of the present application.

[0018] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating or implying relative importance or implying a number or order of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0020] Referring to FIG. 1 and FIG. 2, FIG. 1 shows a simplified schematic diagram of a waste ink collecting box 10 according to an embodiment of the present application, and FIG. 2 shows an exploded structural diagram of the waste ink collecting box 10 according to an embodiment of the present application. The waste ink collecting box 10 according to an embodiment of the present application comprises a body 11, wherein the body 11 is provided with a containing cavity 110, and the body 11 is provided with a liquid inlet portion 113, a liquid outlet portion 114 and a deformable first partition 1191. The first partition 1191 is located inside the containing cavity 110 and separates the containing cavity 110 into a first chamber 111 and a second chamber 112. The separation can be formed by the first partition 1191 alone, that is, the first partition 1191 forms the second chamber 112 alone, and the area outside the second chamber 112 inside the containing cavity 110 is the first chamber 111; or the separation can be formed by cooperation with the body 11, that is, the first chamber 111 and the second chamber 112 are formed by cooperation with the inner wall of the containing cavity 110, as shown in FIG. 1. The liquid inlet portion 113 is in communication with the first chamber 111, and the liquid outlet portion 114 is in communication with the second chamber 112. The first chamber 111 is used for collecting waste liquid, and the second chamber 112 is used for storing maintenance liquid. When the maintenance liquid inside the second chamber 112 is discharged outward through the liquid outlet portion 114, the first partition 1191 deforms under the negative pressure of the second chamber 112, so that the volume of the second chamber 112 decreases and the volume of the first chamber 111 increases.

[0021] It should be noted that the maintenance liquid includes but is not limited to cleaning liquid or moisturizing liquid, etc., and can be flexibly selected and set according to actual needs. When the maintenance liquid is cleaning liquid, the second chamber 112 can provide the cleaning liquid to the nozzle 20 (as shown in FIG. 5) to clean the nozzle 20, so as to clean the ink in the nozzle 20 in time and avoid the nozzle 20 from being blocked and damaged due to solidification of the ink caused by long-term placement. When the maintenance liquid is moisturizing liquid, the second chamber 112 can provide the moisturizing liquid to the nozzle 20 to moisturize the nozzle 20, so as to prevent the nozzle 20 from being blocked and damaged due to solidification of the ink.

[0022] The waste ink collecting box 10 described above is connected with the liquid discharge pipeline 70 for discharging the maintenance liquid outward at the liquid discharge part 114 and connected with the recovery pipeline 50 for recovering the waste liquid at the liquid inlet part 113 in use; when the maintenance liquid in the second chamber 112 is discharged outward through the liquid discharge pipeline 70 and provided to the inkjet head 20, the inkjet head 20 is maintained, and meanwhile, the maintenance liquid in the second chamber 112 is discharged to make the internal space smaller, and the first partition 1191 is deformed and bent toward the second chamber 112 under the negative pressure of the second chamber 112 due to the deformability, so that the waste liquid that can be collected in the first chamber 111 is increased, and the first chamber 111 can collect the waste liquid after the inkjet head 20 is maintained. Therefore, the waste ink collecting box 10 can not only collect the waste liquid, but also store the maintenance liquid, and the volume of the first chamber 111 can be increased after the maintenance liquid is discharged to accommodate more waste liquid, so that the overall volume size is reduced, the structure is more compact, and the cost is reduced compared with the structure of multiple box bodies.

[0023] In one specific embodiment, the second chamber 112 is provided with two, and the maintenance liquid stored in the two second chambers 112 is cleaning liquid and maintenance liquid respectively. The liquid discharge part 114 is provided with two, and the two liquid discharge parts 114 are in one-to-one correspondence with the two second chambers 112. In this way, the waste ink collecting box 10 can not only recover the waste liquid generated by the maintenance inkjet head 20 through the containing cavity 110, but also store the cleaning liquid and the maintenance liquid respectively, so that the cleaning liquid and the maintenance liquid can be selectively provided to the inkjet head 20 through the liquid discharge pipeline 70 to realize cleaning or moisturizing treatment of the inkjet head 20. Therefore, the waste ink collecting box 10 is a multifunctional waste ink collecting box 10, specifically a three-in-one multifunctional waste ink collecting box 10 for recovering waste liquid, providing cleaning liquid, and providing moisturizing liquid, and the overall structure is compact, the volume size is small, the space occupied is small, and the cost is reduced.

[0024] In addition, the first partition 1191 is provided with two, and each second chamber 112 is formed by the deformable first partition 1191 alone or cooperates with the inner wall of the containing cavity 110 to form, and no matter the cleaning liquid is discharged to the inkjet head 20 through the liquid discharge pipeline 70 or the maintenance liquid is discharged to the inkjet head 20 through the liquid discharge pipeline 70, the volume of the containing cavity 110 can be increased.

[0025] Of course, as some optional solutions, the second chamber 112 can be one, three or other numbers, and can be flexibly adjusted and set according to actual needs. When the second chamber 112 is one, only one kind of maintenance liquid can be accommodated in the second chamber 112, which can be cleaning liquid or moisturizing liquid, and is not limited here. In this embodiment, the second chamber 112 is taken as an example to be two and used to accommodate cleaning liquid and moisturizing liquid respectively.

[0026] In some embodiments, the first isolation member 1191 includes, but is not limited to, any one of an isolation film, an isolation cloth, and an elastic sheet, as long as the accommodation cavity 110 is completely isolated from the second cavity 112, and the waste liquid inside the accommodation cavity 110 is prevented from mixing with the maintenance liquid inside the second cavity 112. In the embodiment, the first isolation member 1191 is preferably an isolation film, specifically, an elastic and stretchable film material such as a plastic film. The isolation film has good sealing performance, relatively low material cost, and elasticity. When the maintenance liquid inside the second cavity 112 is discharged outward, the isolation film is correspondingly stretched, and is better deformed and bent towards the second cavity 112, so as to reduce the internal space of the second cavity 112 and correspondingly increase the volume of the accommodation cavity 110. In this way, the accommodation cavity 110 can accommodate more waste liquid.

[0027] In an embodiment, the body 11 is provided with an air exchange valve, which is in communication with the accommodation cavity 110. In this way, during the process of collecting the waste liquid in the accommodation cavity 110, the gas inside the accommodation cavity 110 is discharged outward through the air exchange valve, and during the process of discharging the maintenance liquid in the second cavity 112, the gas outside the body 11 can enter the accommodation cavity 110 through the air exchange valve, so as to maintain the air pressure balance and improve the stability.

[0028] Please refer to FIGS. 2 and 3. In an embodiment, the liquid inlet portion 113 and the liquid outlet portions 114 are located on the same side of the body 11. In this way, the assembly operation of the liquid inlet portion 113 and the liquid outlet portions 114 with the external pipelines such as the recovery pipeline 50 and the liquid discharge pipeline 70 can be completed on the same side of the body 11, which is high in assembly efficiency. In addition, the external pipelines are located on one side of the body 11, which is neat in arrangement. In addition, when the liquid inlet portion 113 and the liquid outlet portions 114 are arranged on the back of the body 11, the liquid inlet portion 113, the liquid outlet portions 114, and the external pipelines cannot be observed by the user located in front of the body 11, which is more beautiful.

[0029] Of course, in some optional solutions, the liquid inlet portion 113 and the liquid outlet portions 114 can also be arranged on different sides of the body 11, and the specific arrangement position can be flexibly selected and set according to actual needs, which is not limited herein.

[0030] It should be noted that the arrangement of the accommodation cavity 110 and the second cavities 112 on the body 11 is various, and can be flexibly adjusted and set according to actual needs, which is not limited herein.

[0031] In one embodiment, the body 11 is provided with a partition wall 117. The partition wall 117 is located inside the accommodating cavity 110 and connected with the inner wall of the accommodating cavity 110. A first partition member 1191 is connected with the partition wall 117, and the two together separate the accommodating cavity 110 into a first chamber 111 and a second chamber 112.

[0032] Specifically, there are two first partition members 1191, one on each side of the partition wall 117. One of the first partition members 1191, the partition wall 117 and the inner wall of the accommodating cavity 110 together form one of the second chambers 112, and the other first partition member 1191, the partition wall 117 and the inner wall of the accommodating cavity 110 together form the other second chamber 112.

[0033] In one embodiment, the inner wall of the accommodating cavity 110 is provided with a first flange 1111, and one side of the partition wall 117 is provided with a second flange 1171. One of the first partition members 1191 is connected with the first flange 1111 and the second flange 1171. The inner wall of the accommodating cavity 110 is further provided with a third flange 1112, and the other side of the partition wall 117 is provided with a fourth flange 1172. The other first partition member 1191 is connected with the third flange 1112 and the fourth flange 1172.

[0034] Specifically, the first flange 1111 and the second flange 1171 together form a circumferential first annular boss. The outer periphery of one of the first partition members 1191 is connected with the annular boss through various ways including but not limited to bonding, welding, riveting, clamping and the like, so that one of the second chambers 112 is isolated from the accommodating cavity 110. In addition, the third flange 1112 and the fourth flange 1172 together form a circumferential second annular boss. The outer periphery of the other first partition member 1191 is connected with the annular boss through various ways including but not limited to bonding, welding, riveting, clamping and the like, so that the other second chamber 112 is isolated from the accommodating cavity 110.

[0035] In one embodiment, the body 11 is further provided with a deformable second partition member 1192. The second partition member 1192 is specifically located on the side of the accommodating cavity 110 facing away from the second chamber 112. The accommodating cavity 110 is isolated from the outside of the body 11 through the second partition member 1192. In this way, during the process of recycling the waste liquid, the second partition member 1192 can be deformed and bent towards the outside, thereby increasing the volume of the accommodating cavity 110 and accommodating more waste liquid.

[0036] In one embodiment, the waste ink collecting box 10 further comprises a protective cover 12 which is openably covered on the body 11, and the protective cover 12 is covered on the outside of the second partition 1192. In this way, the protective cover 12 plays a protective role for the second partition 1192; in addition, during the production and assembly process of the waste ink collecting box 10, the maintenance liquid, the first partition 1191 and the second partition 1192 can be respectively installed in the interior of the body 11 by opening the protective cover 12, and after the assembly is completed, the protective cover 12 can be closed.

[0037] On the basis of the foregoing embodiments, the body 11 is provided with a window which is in communication with the accommodating cavity 110 on the side corresponding to the protective cover 12, and the outer peripheral contour of the second partition 1192 is connected to the mouth wall 116 of the window by various ways including but not limited to bonding, welding, riveting, clamping and the like, so as to isolate the accommodating cavity 110 from the external environment of the body 11.

[0038] In some embodiments, the waste ink collecting box 10 further comprises a sensing chip 118 which is arranged in the interior of the second cavity 112. The sensing chip 118 is used for sensing whether the maintenance liquid in the interior of the second cavity 112 is used up, and sending the information of the maintenance liquid to a controller. When the controller judges that the maintenance liquid is used up, a corresponding warning process is performed to remind the replacement of the waste ink collecting box 10, so as to avoid the occurrence of failure.

[0039] Referring to FIGS. 2 to 5, in one embodiment, a printing device comprises the waste ink collecting box 10 of any of the foregoing embodiments. Specifically, the printing device further comprises a nozzle 20, an ink stack 30, a first pump body 40, a recovery pipeline 50, a second pump body 60 and a drain pipeline 70. The drain pipeline 70 is in communication with the drain part 114 and the nozzle 20 respectively, the second pump body 60 is arranged on the drain pipeline 70, and the second pump body 60 is used for providing power to make the maintenance liquid in the interior of the second cavity 112 enter the nozzle 20 through the drain pipeline 70 to perform cleaning treatment on the nozzle 20; the nozzle 20 is used for outputting the cleaned waste liquid to the ink stack 30; the recovery pipeline 50 is in communication with the liquid inlet part 113 and the ink stack 30 respectively, the first pump body 40 is arranged on the recovery pipeline 50, and the first pump body 40 is used for providing power to make the waste liquid of the ink stack 30 enter the first cavity 111 through the recovery pipeline 50.

[0040] The printing device described above, due to the inclusion of the waste ink collection box 10 in the foregoing embodiments, the technical effects brought by the waste ink collection box 10, that is, the beneficial effects of the waste ink collection box 10. In addition, when the maintenance treatment of the inkjet head 20 is needed, the inkjet head 20 is moved to the position corresponding to the ink tank 30, and then the second pump body 60 is controlled to work, and the second pump body 60 provides power to make the maintenance liquid inside the second chamber 112 output to the inkjet head 20 through the drain line 70, thereby performing maintenance treatment on the inkjet head 20, specifically cleaning treatment and / or moisturizing treatment, which can prevent the ink inside the inkjet head 20 from solidifying due to the lack of timely cleaning, thereby preventing the inkjet head 20 from being blocked and damaged; at the same time, the inkjet head 20 can output the waste liquid after cleaning to the ink tank 30, and the second pump body 60 is controlled to work, and the second pump body 60 provides power to make the waste liquid of the ink tank 30 enter the containing chamber 110 through the recovery line 50, and the containing chamber 110 performs recovery treatment.

[0041] Please refer to FIGS. 2-5, in an embodiment, the second chamber 112 is provided with two, the drain line 70 includes two first branches 71, a main pipe 72 and two first switch valves 73, one end of each first branch 71 is respectively connected to the drain part 114 of each second chamber 112, each first switch valve 73 is correspondingly arranged on each first branch 71, the two first branches 71 are connected in parallel to the main pipe 72, and the main pipe 72 is connected to the inkjet head 20. In this way, two different maintenance liquids, such as cleaning liquid and maintenance liquid, can be respectively installed inside the two second chambers 112, that is, more than one kind of maintenance liquid. In this way, when the cleaning liquid is needed, the corresponding one of the first switch valves 73 is opened, and the other first switch valve 73 is closed, so that the cleaning liquid can be delivered to the inkjet head 20 through the first branch 71 and the main pipe 72, thereby cleaning the inkjet head 20. Similarly, by controlling the first switch valve 73, the maintenance liquid can also be delivered to the inkjet head 20 through the first branch 71 and the main pipe 72, thereby performing maintenance treatment on the inkjet head 20. In addition, since the two first branches 71 share one main pipe 72, the structure can be simplified, the occupied space can be reduced, and the cost can be reduced.

[0042] Specifically, the second pump body 60 is correspondingly provided with two, each second pump body 60 is correspondingly arranged on each first branch 71, and when working, the corresponding maintenance liquid can be delivered to the inkjet head 20. Of course, the second pump body 60 can also be provided with one, for example, arranged on the main pipe 72.

[0043] Alternatively, the other end of the two first branches 71 is connected in parallel to the main pipe 72 through a pipe joint 74. The pipe joint 74 includes but is not limited to a three-way joint, specifically, for example, a Y-shaped joint.

[0044] In some embodiments, the first switch valve 73 includes but is not limited to a one-way valve, which can prevent backflow and only allow the maintenance liquid to flow from the first branch 71 to the main pipe 72 and be used for cleaning the nozzle 20, so as to avoid the defects that the cleaning liquid flows back to the chamber storing the moisturizing liquid and mixes with the moisturizing liquid, and the moisturizing liquid flows back to the chamber storing the cleaning liquid and mixes with the cleaning liquid.

[0045] Please refer to FIGS. 3-5, in an embodiment, the printing device further includes an ink bag 80, a second switch valve 82, an ink inlet pipe 91 and an ink cartridge assembly 90. The ink inlet part 81 of the ink bag 80 communicates with the ink cartridge assembly 90 through the ink inlet pipe 91, and the ink outlet part of the ink bag 80 communicates with the nozzle 20. The second switch valve 82 is used to control the communication or disconnection of the ink bag 80 and the nozzle 20, and control the communication or disconnection of the drain pipeline 70 and the nozzle 20. In this way, when the nozzle 20 needs to be maintained, the nozzle 20 moves to the ink stack 30, the second switch valve 82 controls the communication of the drain pipeline 70 and the nozzle 20, and controls the disconnection of the ink bag 80 and the nozzle 20, so that the ink bag 80 cannot supply ink to the nozzle 20, and the drain pipeline 70 can supply the maintenance liquid to the nozzle 20 to maintain the nozzle 20; after the maintenance of the nozzle 20 is completed, the nozzle 20 moves to the printing platform, when the second switch valve 82 controls the disconnection of the drain pipeline 70 and the nozzle 20, and controls the communication of the ink bag 80 and the nozzle 20, the drain pipeline 70 cannot supply the maintenance liquid to the nozzle 20, while the ink bag 80 stores the UV ink supplied by the ink cartridge assembly 90 and can supply the UV ink to the nozzle 20, and the nozzle 20 can complete the printing work accordingly. It can be seen that when the nozzle 20 needs to be maintained, specifically cleaned or moisturized, the nozzle 20 does not need to be disassembled, under the control of the second switch valve 82 and the cooperation of the first switch valve 73 and the first pump body 40, the maintenance of the nozzle 20 can be quickly completed, the maintenance efficiency of the nozzle 20 is high, the degree of automation is high, and the harm of the cleaning liquid and the UV ink to the human body during disassembly of the nozzle 20 in the related art is effectively avoided.

[0046] In some embodiments, the second switch valve 82 includes but is not limited to a two-position three-way electromagnetic valve, the first access end 821 and the second access end 822 of the two-position three-way electromagnetic valve respectively communicate with the drain pipeline 70 and the ink bag 80, and the output end of the two-position three-way electromagnetic valve communicates with the nozzle 20, under the adjustment of the two-position three-way electromagnetic valve, the ink ejection work or the maintenance work of the nozzle 20 can be automatically realized.

[0047] In one embodiment, the ink sacs 80 are provided in a plurality, each of which contains different UV ink, and are connected to the ink cartridge assembly 90 provided with different UV ink. The second switch valve 82 is provided in a plurality, each of which is connected to the corresponding ink sac 80. The liquid discharge pipeline 70 is provided with a plurality of second branches, each of which is connected to the corresponding second switch valve 82, and each of the second switch valves 82 is connected to the nozzle 20. In this way, since the ink sacs 80 of the printing device are provided in a plurality, for example, six, corresponding to six different colors of UV ink, printing work of various colors can be achieved. In addition, the liquid discharge pipeline 70 is provided with a plurality of second branches, each of which, each of the ink sacs 80, and the nozzle 20 are connected through each of the second switch valves 82, so that after the printing work of each of the ink sacs 80 is completed, the maintenance liquid can be provided to the nozzle 20 through the corresponding second branch for maintenance treatment work, which can achieve better maintenance effect of the nozzle 20.

[0048] In some embodiments, the printing device further comprises a first protective shell 83 and a second protective shell 84 connected to each other. Each of the second switch valves 82 is provided in the first protective shell 83 and the second protective shell 84. The first access end 821 and the second access end 822 of the second switch valve 82 are respectively connected to the corresponding second branch and ink sac 80 after penetrating the first protective shell 83, and the output end of the second switch valve 82 is connected to the nozzle 20 after penetrating the second protective shell 84. In order to ensure the sealing performance of the connection between the first access end 821 and the second branch, a sealing ring is arranged on the first access end 821, for example, and the sealing ring is arranged at the connection between the first access end 821 and the second branch, which can improve the sealing performance. In addition, the second access end 822 is provided as a pin, for example, so that it can be easily inserted into the ink sac 80 to communicate with the ink sac 80.

[0049] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0050] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims, and the description and drawings can be used to explain the content of the claims.

Claims

1. A waste ink collecting cartridge, comprising: a body provided with a containing cavity, the body being provided with a liquid inlet portion, a liquid outlet portion and a deformable first partitioning member; the first partitioning member is located inside the containing cavity and separates the containing cavity into a first chamber and a second chamber, the liquid inlet portion is in communication with the first chamber, and the liquid outlet portion is in communication with the second chamber; the first chamber is used for collecting waste liquid, and the second chamber is used for storing maintenance liquid; when the maintenance liquid inside the second chamber is discharged outward through the liquid outlet portion, the first partitioning member is deformed under the negative pressure of the second chamber, so that the volume of the second chamber is reduced and the volume of the first chamber is increased.

2. The waste ink collecting box according to claim 1, wherein The second chamber is provided with two liquid outlet portions, and the two liquid outlet portions are in one-to-one correspondence with the two second chambers.

3. The waste ink collecting box according to claim 2, wherein The liquid inlet portion and each of the liquid outlet portions are located on the same side of the body.

4. The waste ink collecting box according to claim 2, wherein The body is provided with a partition wall, the partition wall is located inside the containing cavity and connected with the inner wall of the containing cavity, the first partitioning member is connected with the partition wall, and the two cooperate to separate the containing cavity into the first chamber and the second chamber.

5. The waste ink collecting box according to claim 4, wherein The first partitioning member is provided with two and located on opposite sides of the partition wall, one of the first partitioning members, the partition wall and the inner wall of the containing cavity cooperate to form one of the second chambers, and the other of the first partitioning members, the partition wall and the inner wall of the containing cavity cooperate to form the other of the second chambers.

6. The waste ink collecting box according to claim 5, wherein The inner wall of the containing cavity is provided with a first flange, one side of the partition wall is provided with a second flange, and one of the first partitioning members is connected to the first flange and the second flange; the inner wall of the containing cavity is further provided with a third flange, the other side of the partition wall is provided with a fourth flange, and the other of the first partitioning members is connected to the third flange and the fourth flange.

7. The waste ink collecting box according to claim 1, wherein The first partitioning member is any one of a partitioning film, a partitioning cloth and an elastic sheet.

8. The waste ink collecting box according to claim 1, wherein The body is provided with a ventilation valve, and the ventilation valve is in communication with the containing cavity.

9. The waste ink collecting box according to claim 1, wherein The body is further provided with a deformable second partitioning member, the containing cavity is isolated from the outside of the body through the second partitioning member; the waste ink collecting cartridge further comprises a protective cover which is openably covered on the body, and the protective cover is covered outside the second partitioning member. 10.A printing device, comprising the waste ink collecting cartridge according to any one of claims 1 to 9.

11. The printing device of claim 10, wherein, The printing device further comprises a nozzle, an ink stack, a first pump body, a recovery pipeline, a second pump body and a liquid discharge pipeline; the liquid discharge pipeline is in communication with the liquid discharge part and the nozzle respectively, the second pump body is arranged on the liquid discharge pipeline, and the second pump body is used to provide power to make the maintenance liquid inside the second chamber enter the nozzle through the liquid discharge pipeline; the nozzle is used to output the waste liquid after cleaning to the ink stack; the recovery pipeline is in communication with the liquid inlet part and the ink stack respectively, the first pump body is arranged on the recovery pipeline, and the first pump body is used to provide power to make the waste liquid of the ink stack enter the first chamber through the recovery pipeline.

12. The printing device of claim 11, wherein, The second chamber is provided with two chambers, the liquid discharge pipeline comprises two first branches, a main pipeline and two first switch valves, one end of each first branch is connected to the liquid discharge part of each second chamber respectively, each first switch valve is arranged on each first branch, and the two first branches are connected to the main pipeline in parallel, and the main pipeline is connected to the nozzle.

13. The printing device of claim 11 or 12, wherein, The printing device further comprises an ink capsule, a second switch valve, an ink inlet pipeline and an ink cartridge assembly; the ink capsule is used to communicate with the ink cartridge assembly through the ink inlet pipeline, and the ink capsule is also used to communicate with the nozzle; the second switch valve is used to control the communication or disconnection between the ink capsule and the nozzle, and is also used to control the communication or disconnection between the liquid discharge pipeline and the nozzle.

14. The printing device of claim 13, wherein, The second switch valve comprises a two-position three-way electromagnetic valve, a first access end and a second access end of the two-position three-way electromagnetic valve are in communication with the liquid discharge pipeline and the ink capsule respectively, and an output end of the two-position three-way electromagnetic valve is in communication with the nozzle.

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