Waste ink collecting box and printing device

Abstract

The utility model relates to a waste ink collecting box and a printing device. The waste ink collecting box comprises a body, the body is provided with a containing cavity, and the body is provided with a liquid inlet part, a liquid discharging part and a deformable first isolation piece. The first isolation piece is located in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body. The liquid inlet part is communicated with the first cavity, and the liquid discharge part is communicated with the second cavity. The first chamber is used for collecting waste liquid, and the second chamber is used for storing maintenance liquid. And when the maintenance liquid in the second cavity is discharged outwards through the liquid discharge part, the first isolation piece is deformed under the negative pressure action of the second cavity, so that the volume of the second cavity is reduced, and the volume of the first cavity is increased. The waste ink collection box not only can meet the collection of waste liquid, but also can store the maintenance liquid, and can increase the volume of the first cavity after the maintenance liquid is discharged so as to contain more waste liquid, so that the overall size can be reduced, the structure is more compact, and the cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of printing, and particularly to a waste ink collection box and a printing device. Background Art

[0002] With the development of printing technology, various types of printing devices have emerged, including but not limited to UV printers, inkjet printers, etc. After the print head of the printing device has been used for a period of time or after the printing work is completed, various maintenance treatments such as cleaning and moisturizing are usually required for the print head to timely clean the ink in the print head and avoid ink solidification caused by long-term placement, resulting in print head blockage, and in severe cases, print head damage defects. Therefore, the printing device needs to be configured 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 and treating the waste liquid generated after the maintenance treatment of the print head. However, the added cleaning liquid storage container, moisturizing liquid storage container, and waste liquid recovery container will increase the overall volume of the printing device and the device occupies more space. Summary of the Invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide a waste ink collection box and a printing device, which can reduce the volume, occupy less space, and at the same time have the functions of recovering waste liquid and providing maintenance liquid.

[0004] A waste ink collection box, the waste ink collection box includes:

[0005] A main body, the main body is provided with a receiving cavity, and the main body is provided with a liquid inlet part, a liquid discharge part and a deformable first partition; the first partition is located inside the receiving cavity and divides the receiving cavity into a first chamber and a second chamber, the liquid inlet part is communicated with the first chamber, and the liquid discharge part is communicated with the second chamber; the first chamber is used for collecting waste liquid, and the second chamber is used for storing maintenance liquid;

[0006] When the maintenance liquid inside the second chamber is discharged outward through the liquid discharge part, the first partition deforms under the negative pressure of the second chamber, so that the volume of the second chamber decreases and the volume of the first chamber increases.

[0007] In one embodiment, two second chambers are provided, and two liquid discharge parts are provided, and the two liquid discharge parts are in one-to-one correspondence and communication with the two second chambers.

[0008] In one embodiment, the liquid inlet part and each liquid discharge part are all located on the same side surface of the main body.

[0009] In one embodiment, the body is provided with a partition wall which is located inside the accommodation cavity and connected to the inner wall of the accommodation cavity. The first partition member is connected to the partition wall, and the two cooperate to divide the accommodation cavity into a first chamber and a second chamber.

[0010] In one embodiment, there are two first partition members which are respectively located on opposite sides of the partition wall. One of the first partition members, the partition wall and the inner wall of the accommodation cavity cooperate to form one of the second chambers, and the other first partition member, the partition wall and the inner wall of the accommodation cavity cooperate to form the other second chamber.

[0011] In one embodiment, the inner wall of the accommodation cavity is provided with a first flange, and one side of the partition wall is provided with a second flange. One of the first partition members is connected to the first flange and the second flange; the inner wall of the accommodation cavity is further provided with a third flange, and the other side of the partition wall is provided with a fourth flange. The other first partition member is connected to the third flange and the fourth flange.

[0012] In one embodiment, the first partition member is any one of an isolation film, an isolation cloth and an elastic sheet.

[0013] In one embodiment, an air exchange valve is provided on the body, and the air exchange valve is communicated with the accommodation cavity.

[0014] In one embodiment, a deformable second partition member is further provided on the body. The accommodation cavity is isolated from the outside of the body through the second partition member; the waste ink collection box further includes a protective cover which is openably covered on the body, and the protective cover is covered outside the second partition member.

[0015] A printing device, the printing device includes the waste ink collection box described above.

[0016] In one embodiment, the printing device further includes: a print head, an ink stack, a first pump body, a recovery pipeline, a second pump body and a liquid discharge pipeline; the liquid discharge pipeline is respectively communicated with the liquid discharge part and the print head, and the second pump body is arranged on the liquid discharge pipeline. The second pump body is used to provide power so that the maintenance liquid inside the second chamber enters the print head through the liquid discharge pipeline; the print head is used to output the waste liquid after cleaning to the ink stack; the recovery pipeline is respectively communicated with the liquid inlet part and the ink stack, and the first pump body is arranged on the recovery pipeline. The first pump body is used to provide power so that the waste liquid of the ink stack enters the first chamber through the recovery pipeline.

[0017] In one embodiment, two second chambers are provided. The liquid discharge pipeline includes two first branches, a main pipe, and two first switching valves. One end of each first branch is correspondingly connected to the liquid discharge part of each second chamber, and each first switching valve is correspondingly arranged on each first branch. The two first branches are connected in parallel to the main pipe, and the main pipe is connected to the nozzle.

[0018] In one embodiment, the printing device further includes an ink sac, a second switching valve, an ink inlet pipe, and an ink cartridge assembly; the ink sac is used to communicate with the ink cartridge assembly through the ink inlet pipe, and the ink sac is also used to communicate with the nozzle; the second switching valve is used to control the communication or disconnection between the ink sac and the nozzle, and is also used to control the communication or disconnection between the liquid discharge pipeline and the nozzle.

[0019] In one embodiment, the second switching valve includes a two-position three-way solenoid valve. The first access end and the second access end of the two-position three-way solenoid valve are respectively communicated with the liquid discharge pipeline and the ink sac, and the output end of the two-position three-way solenoid valve is communicated with the nozzle.

[0020] In the above waste ink collection box and printing device, during use, the liquid discharge part is connected to the liquid discharge pipeline for discharging the maintenance liquid outward, and the liquid inlet part is connected to the recovery pipeline for recovering the waste liquid; when the maintenance liquid inside the second chamber is discharged outward through the liquid discharge pipeline and supplied to the nozzle, it plays a role in maintaining the nozzle. At the same time, since the maintenance liquid inside the second chamber is discharged, the internal space becomes smaller. Due to its deformability, the first isolation member will deform and bend towards the second chamber under the negative pressure of the second chamber. In this way, the waste liquid that the first chamber can collect will increase, and the first chamber can collect the waste liquid after maintaining the nozzle. It can be seen that the waste ink collection box can not only meet the collection of waste liquid, but also store the maintenance liquid, and can increase the volume of the first chamber after the maintenance liquid is discharged to accommodate more waste liquid. Compared with the structural form of setting multiple boxes, it can reduce the overall volume size, make the structure more compact, and reduce costs. Description of the Drawings

[0021] Figure 1 It is a simplified schematic diagram of a waste ink collection box according to an embodiment of the present application.

[0022] Figure 2 It is an exploded structure diagram of a waste ink collection box according to an embodiment of the present application.

[0023] Figure 3 It is a structural diagram of a printing device according to an embodiment of the present application from one perspective.

[0024] Figure 4 is Figure 3 Another perspective structural diagram of the shown structure.

[0025] Figure 5 For Figure 3 The structure diagram of the ink sac, the second switching valve and the nozzle in the structure shown

[0026] 10. Waste ink collection box; 11. Body; 110. Accommodation cavity; 111. First chamber; 1111. First flange; 1112. Third flange; 112. Second chamber; 113. Liquid inlet part; 114. Liquid discharge part; 116. Orifice wall; 117. Partition wall; 1171. Second flange; 1172. Fourth flange; 118. Induction chip; 1191. First isolation member; 1192. Second isolation member; 12. Protective cover; 20. Nozzle; 30. Ink stack; 40. First pump body; 50. Recovery pipeline; 60. Second pump body; 70. Liquid discharge pipeline; 71. First branch; 72. Main pipe; 73. First switching valve; 74. Pipeline joint; 80. Ink sac; 81. Ink inlet part; 82. Second switching 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 implementation manners

[0027] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0028] Refer to Figure 1 And Figure 2 , Figure 1 Fig. shows a simplified schematic diagram of the waste ink collection box 10 according to an embodiment of the present application, Figure 2 Fig. shows an exploded structure diagram of the waste ink collection box 10 according to an embodiment of the present application. A waste ink collection box 10 provided by an embodiment of the present application includes: a body 11, the body 11 is provided with an accommodation cavity 110, and a liquid inlet part 113, a liquid discharge part 114 and a deformable first isolation member 1191 are arranged on the body 11. The first isolation member 1191 is located inside the accommodation cavity 110 and divides the accommodation cavity 110 into a first chamber 111 and a second chamber 112. Among them, the partition can be formed independently, that is, the first isolation member 1191 independently forms the second chamber 112, and the area outside the second chamber 112 inside the accommodation cavity 110 is the first chamber 111; or it can be formed in cooperation with the body 11, that is, a first chamber 111 and a second chamber 112 are formed in cooperation with the inner wall of the accommodation cavity 110, such as Figure 1As shown. The liquid inlet part 113 is communicated with the first chamber 111, and the liquid discharge part 114 is communicated 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 discharge part 114, the first isolation member 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.

[0029] 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. Among them, when the maintenance liquid is cleaning liquid, the second chamber 112 can supply the cleaning liquid to the nozzle 20 (as Figure 5 shown) to clean the nozzle 20, so as to clean the ink in the nozzle 20 in time and avoid the defects of nozzle 20 blockage and damage caused by ink solidification due to long-term placement; when the maintenance liquid is moisturizing liquid, the second chamber 112 can supply the moisturizing liquid to the nozzle 20 to moisturize the nozzle 20, thereby preventing the defects of nozzle 20 blockage and damage caused by ink solidification.

[0030] In the above waste ink collection box 10, during use, the liquid discharge part 114 is connected to the liquid discharge pipeline 70 for discharging the maintenance liquid outward, and the liquid inlet part 113 is connected to the recovery pipeline 50 for recovering the waste liquid; when the maintenance liquid inside the second chamber 112 is discharged outward through the liquid discharge pipeline 70 and supplied to the nozzle 20, it plays a maintenance role for the nozzle 20. At the same time, the internal space of the second chamber 112 becomes smaller due to the discharge of the maintenance liquid. Since the first isolation member 1191 is deformable, it will deform and bend toward the second chamber 112 under the negative pressure of the second chamber 112. In this way, the waste liquid that the first chamber 111 can collect will increase, and the first chamber 111 can collect the waste liquid after maintaining the nozzle 20. It can be seen that the waste ink collection box 10 can not only collect waste liquid, but also store maintenance liquid, and can increase the volume of the first chamber 111 after the maintenance liquid is discharged to install more waste liquid. Compared with the structural form of setting multiple boxes, the overall volume size can be reduced, the structure is more compact, and the cost can be reduced.

[0031] In a specific embodiment, there are two second chambers 112, and the maintenance liquids stored inside the two second chambers 112 are a cleaning liquid and a maintenance liquid respectively. The liquid discharging parts 114 are correspondingly provided in two, and the two liquid discharging parts 114 are in one-to-one correspondence and communication with the two second chambers 112. In this way, the waste ink collection box 10 can not only recover the waste liquid generated by the maintenance nozzle 20 through the accommodation cavity 110, but also store the cleaning liquid and the maintenance liquid respectively, and can selectively supply the cleaning liquid and the maintenance liquid to the nozzle 20 through the liquid discharging pipeline 70 to realize the cleaning treatment or moisturizing treatment of the nozzle 20. In this way, the waste ink collection box 10 is a multi-functional waste ink collection box 10, specifically a multi-functional waste ink collection box 10 in the form of a three-in-one for recovering waste liquid, providing cleaning liquid, and providing moisturizing liquid. The overall structure layout is compact, the volume size is small, the occupied space is small, and the cost can be reduced.

[0032] In addition, there are two first isolation members 1191 correspondingly. Each second chamber 112 is independently formed or formed in cooperation with the inner wall of the accommodation cavity 110 through the deformable first isolation member 1191. Whether the cleaning liquid is discharged to the nozzle 20 through the liquid discharging pipeline 70 or the maintenance liquid is discharged to the nozzle 20 through the liquid discharging pipeline 70, the volume of the accommodation cavity 110 can be increased.

[0033] Of course, as some alternative solutions, the number of the second chambers 112 can be one, three or other numbers, and can be flexibly adjusted and set according to actual requirements. When there is one second chamber 112, only one kind of maintenance liquid can be installed inside the second chamber 112, which can specifically be a cleaning liquid or a moisturizing liquid, and no specific limitation is made here. In this embodiment, it is specifically exemplified that there are two second chambers 112 and they are respectively used for installing the cleaning liquid and the moisturizing liquid for expansion.

[0034] 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 it can completely isolate the accommodation cavity 110 from the second chamber 112 and prevent the waste liquid inside the accommodation cavity 110 from being mixed with the maintenance liquid inside the second chamber 112. The first isolation member 1191 in this embodiment is preferably an isolation film, specifically, for example, an elastic stretchable film material such as a plastic film, which not only has good sealing performance and relatively low material cost, but also has elasticity. When the maintenance liquid inside the second chamber 112 is discharged outward, the isolation film is correspondingly stretched and can be deformed and bent better towards the second chamber 112 to reduce the internal space of the second chamber 112 and correspondingly increase the volume of the accommodation cavity 110, so that the accommodation cavity 110 can accommodate more waste liquid.

[0035] In one embodiment, a ventilation valve is provided on the body 11, and the ventilation valve is communicated with the accommodation cavity 110. In this way, during the process of the accommodation cavity 110 collecting waste liquid, the gas inside the accommodation cavity 110 is discharged outward through the ventilation valve, and during the process of the maintenance liquid in the second chamber 112 being discharged outward, the gas outside the body 11 can enter the inside of the accommodation cavity 110 through the ventilation valve, so as to maintain air pressure balance and improve stability.

[0036] Please refer to Figure 2 With Figure 3 , in one embodiment, the liquid inlet part 113 and each liquid discharge part 114 are both located on the same side of the body 11. In this way, it is convenient to complete the assembly operations of the liquid inlet part 113 and each liquid discharge part 114 with external pipelines such as the recovery pipeline 50 and the liquid discharge pipeline 70 on the same side of the body 11, and the assembly efficiency is relatively high; in addition, it can be realized that the external pipelines are all located on one side of the body 11, making the layout more neat; in addition, when the liquid inlet part 113 and each liquid discharge part 114 are arranged on the back surface of the body 11, the liquid inlet part 113, each liquid discharge part 114 and the external pipelines will not be observed by the user located on the front surface of the body 11, which is more beautiful.

[0037] Of course, in some alternative solutions, the liquid inlet part 113 and each liquid discharge part 114 may not need to be arranged on the same side of the body 11, and may also be arranged on different sides of the body 11. The specific arrangement positions can be flexibly selected and set according to actual needs, and are not limited herein.

[0038] It should be noted that there are many arrangement ways of the accommodation cavity 110 and each second chamber 112 on the body 11, which can be flexibly adjusted and set according to actual needs, and are not specifically limited herein.

[0039] In one embodiment, the body 11 is provided with a partition wall 117. The partition wall 117 is located inside the accommodation cavity 110 and is connected to the inner wall of the accommodation cavity 110. The first partition member 1191 is connected to the partition wall 117, and the two cooperate to divide the accommodation cavity 110 into a first chamber 111 and a second chamber 112.

[0040] Specifically, there are two first partition members 1191 and they are respectively located on opposite sides of the partition wall 117. One of the first partition members 1191, the partition wall 117 and the inner wall of the accommodation cavity 110 cooperate to form one of the second chambers 112, and the other first partition member 1191, the partition wall 117 and the inner wall of the accommodation cavity 110 cooperate to form the other second chamber 112.

[0041] In one embodiment, a first flange 1111 is provided on the inner wall of the accommodation cavity 110, and a second flange 1171 is provided on one side of the partition wall 117. One of the first isolation members 1191 is connected to the first flange 1111 and the second flange 1171. A third flange 1112 is further provided on the inner wall of the accommodation cavity 110, a fourth flange 1172 is provided on the other side of the partition wall 117, and the other first isolation member 1191 is connected to the third flange 1112 and the fourth flange 1172.

[0042] Specifically, the first flange 1111 and the second flange 1171 cooperate to form a circumferential first annular boss, and the outer periphery of one of the first isolation members 1191 is connected to the annular boss by various methods including but not limited to bonding, welding, riveting, clamping, etc., so that one of the second chambers 112 is isolated from the accommodation cavity 110. In addition, the third flange 1112 and the fourth flange 1172 cooperate to form a circumferential second annular boss, and the outer periphery of the other first isolation member 1191 is connected to the annular boss by various methods including but not limited to bonding, welding, riveting, clamping, etc., so that the other second chamber 112 is isolated from the accommodation cavity 110.

[0043] In one embodiment, a deformable second isolation member 1192 is further provided on the body 11. Specifically, for example, the second isolation member 1192 is located on the side of the accommodation cavity 110 facing away from the second chamber 112. The accommodation cavity 110 is isolated from the outside of the body 11 through the second isolation member 1192. Thus, during the process of recycling waste liquid, the second isolation member 1192 can deform and bend towards the outside, thereby increasing the volume of the accommodation cavity 110 to hold more waste liquid.

[0044] In one embodiment, the waste ink collection box 10 further includes a protective cover 12 that is openably provided on the body 11. And the protective cover 12 is provided outside the second isolation member 1192. Thus, the protective cover 12 plays a protective role for the second isolation member 1192; in addition, during the production and assembly process of the waste ink collection box 10, the maintenance liquid, the first isolation member 1191, and the second isolation member 1192 can be respectively installed inside the body 11 by opening the protective cover 12, and after assembly, the protective cover 12 can be closed.

[0045] On the basis of the foregoing embodiment, a window communicating with the accommodation cavity 110 is provided on the side surface of the body 11 corresponding to the protective cover 12, and the outer peripheral contour of the second isolation member 1192 is connected to the wall 116 of the window by various methods including but not limited to bonding, welding, riveting, clamping, etc., so that the accommodation cavity 110 is isolated from the external environment of the body 11.

[0046] In some embodiments, the waste ink collection box 10 further includes a sensing chip 118 disposed inside the second chamber 112. The sensing chip 118 is configured to sense whether the maintenance liquid inside the second chamber 112 is used up and send information about the maintenance liquid to the controller. When the controller determines that the maintenance liquid is used up, a warning process is performed accordingly to remind to replace the waste ink collection box 10 to avoid malfunctions.

[0047] Please refer to Figures 2 to 5 , in one embodiment, a printing device includes the waste ink collection box 10 of any of the foregoing embodiments. Specifically, the printing device further includes: a print head 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 respectively connected to the drain portion 114 and the print head 20. The second pump body 60 is disposed on the drain pipeline 70. The second pump body 60 is configured to provide power to enable the maintenance liquid inside the second chamber 112 to enter the print head 20 through the drain pipeline 70 for cleaning the print head 20; the print head 20 is configured to output the waste liquid after cleaning to the ink stack 30; the recovery pipeline 50 is respectively connected to the liquid inlet portion 113 and the ink stack 30. The first pump body 40 is disposed on the recovery pipeline 50. The first pump body 40 is configured to provide power to enable the waste liquid of the ink stack 30 to enter the first chamber 111 through the recovery pipeline 50.

[0048] The above-mentioned printing device, since it includes the waste ink collection box 10 in the foregoing embodiment, the technical effect is brought by the waste ink collection box 10, that is, it includes the beneficial effects of the waste ink collection box 10. In addition, when the print head 20 needs to be maintained, the print head 20 is moved to a position corresponding to the ink stack 30, and then the second pump body 60 is controlled to work. The second pump body 60 provides power to enable the maintenance liquid inside the second chamber 112 to be output to the print head 20 through the drain pipeline 70, so as to perform maintenance on the print head 20, specifically cleaning and / or moisturizing, which can prevent the defects of blockage and damage of the print head 20 caused by the ink inside the print head 20 not being cleaned in time and solidifying; at the same time, the print head 20 can output the waste liquid after cleaning to the ink stack 30, control the second pump body 60 to work, and the second pump body 60 provides power to enable the waste liquid of the ink stack 30 to enter the accommodation chamber 110 through the recovery pipeline 50 for recovery by the accommodation chamber 110.

[0049] Please refer to Figures 2 to 5, in one embodiment, there are two second chambers 112. The liquid discharge pipeline 70 includes two first branches 71, a main pipe 72, and two first switching valves 73. One end of each first branch 71 is respectively connected to the liquid discharge part 114 of each second chamber 112 correspondingly. Each first switching 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 nozzle 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, there is more than one kind of maintenance liquid. When the cleaning liquid is needed, one of the corresponding first switching valves 73 is opened and the other first switching valve 73 is closed. In this way, the cleaning liquid can be transported to the nozzle 20 through the first branch 71 and the main pipe 72, so as to clean the nozzle 20; similarly, through the control of the first switching valve 73, the maintenance liquid can also be transported to the nozzle 20 through the first branch 71 and the main pipe 72, so as to maintain the nozzle 20. In addition, since the two first branches 71 share a main pipe 72, the structure can be simplified, the occupied space can be reduced, and the cost can be lowered.

[0050] Specifically, there are two second pump bodies 60 correspondingly. Each second pump body 60 is correspondingly arranged on each first branch 71. During operation, the corresponding maintenance liquid can be transported to the nozzle 20. Of course, the second pump body 60 can also be, for example, set to one and, for example, arranged on the main pipe 72.

[0051] Optionally, the other ends of the two first branches 71 are connected in parallel to the main pipe 72 through a pipeline joint 74, for example. The pipeline joint 74 includes but is not limited to a tee joint, specifically, for example, a Y-shaped joint.

[0052] In some embodiments, the first switching valve 73 includes but is not limited to a one-way valve. The one-way valve can prevent backflow and only allows the maintenance liquid to flow from the first branch 71 to the main pipe 72 and be used for cleaning the nozzle 20. In this way, the defect that the cleaning liquid flows back into the chamber storing the moisturizing liquid and mixes with the moisturizing liquid can be avoided, and the defect that the moisturizing liquid flows back into the chamber of the cleaning liquid and mixes with the cleaning liquid can be avoided.

[0053] Please refer to Figures 3 to 5, in one embodiment, the printing device further includes an ink sac 80, a second switching valve 82, an ink inlet pipe 91, and an ink cartridge assembly 90. The ink inlet portion 81 of the ink sac 80 is communicated with the ink cartridge assembly 90 through the ink inlet pipe 91, and the ink outlet portion of the ink sac 80 is communicated with the print head 20. The second switching valve 82 is used to control the connection or disconnection between the ink sac 80 and the print head 20, and to control the connection or disconnection between the liquid discharge pipeline 70 and the print head 20. Thus, when maintenance treatment needs to be performed on the print head 20, the print head 20 moves to the ink stack 30, the second switching valve 82 controls the connection between the liquid discharge pipeline 70 and the print head 20, and controls the disconnection between the ink sac 80 and the print head 20. In this way, the ink sac 80 cannot supply ink to the print head 20, and the liquid discharge pipeline 70 can supply the maintenance liquid to the print head 20 to perform maintenance treatment on the print head 20. After the maintenance treatment of the print head 20 is completed, the print head 20 moves to the printing platform. When the second switching valve 82 controls the disconnection between the liquid discharge pipeline 70 and the print head 20 and controls the connection between the ink sac 80 and the print head 20, the liquid discharge pipeline 70 cannot supply the maintenance liquid to the print head 20, and the ink sac 80 stores the UV ink conveyed by the ink cartridge assembly 90 and can convey the UV ink to the print head 20, and the print head 20 can accordingly complete the printing work. It can be seen that when maintenance treatment, specifically cleaning treatment or moisturizing treatment, needs to be performed on the print head 20, there is no need to disassemble the print head 20. Under the control of the second switching valve 82 and the coordinated action of the first switching valve 73 and the first pump body 40, the maintenance work of the print head 20 can be quickly completed. The maintenance efficiency of the print head 20 is relatively high, and the degree of automation is relatively high, effectively avoiding the harm to the human body caused by the cleaning liquid and UV ink when disassembling the print head 20 in the related art.

[0054] In some embodiments, the second switching valve 82 includes, but is not limited to, a two-position three-way solenoid valve. The first access end 821 and the second access end 822 of the two-position three-way solenoid valve are respectively communicated with the liquid discharge pipeline 70 and the ink sac 80, and the output end of the two-position three-way solenoid valve is communicated with the print head 20. Under the adjustment of the two-position three-way solenoid valve, the inkjet work or maintenance work of the print head 20 can be automatically realized.

[0055] In one embodiment, a plurality of ink sacs 80 are provided, and each ink sac 80 contains a different UV ink, specifically connected to a cartridge assembly 90 equipped with a variety of different UV inks. There are a plurality of second switching valves 82, and each second switching valve 82 is correspondingly connected to each ink sac 80. The liquid discharge pipeline 70 is provided with a plurality of second branches, and each second branch is correspondingly connected to each second switching valve 82. Each second switching valve 82 is also connected to the nozzle 20. Thus, since there are a plurality of ink sacs 80 in the printing device, for example, six, corresponding to six different colors of UV inks installed, various color printing jobs can be achieved. In addition, the liquid discharge pipeline 70 is provided with a plurality of second branches, and each second branch and each ink sac 80 are connected to the nozzle 20 through each second switching valve 82. Therefore, after each ink sac 80 finishes the printing job, a maintenance liquid can be provided through the corresponding second branch to the nozzle 20 for maintenance processing, so that a better maintenance effect on the nozzle 20 can be achieved.

[0056] In some embodiments, the printing device further includes a first protective shell 83 and a second protective shell 84 that are connected to each other. Each second switching valve 82 is installed 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 switching valve 82 also respectively penetrate through the first protective shell 83 and are respectively correspondingly connected to the second branch and the ink sac 80, and the output end of the second switching valve 82 penetrates through the second protective shell 84 and is connected to the nozzle 20. Among them, in order to ensure the sealing performance at the connection between the first access end 821 and the second branch, a sealing ring is provided on the first access end 821, for example. Setting a sealing ring at the connection between the first access end 821 and the second branch can improve the sealing performance. In addition, the second access end 822 is set as a pin, for example, so as to facilitate insertion into the ink sac 80 to communicate with the ink sac 80.

[0057] In the description of the present application, it should be understood that if there appear these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0058] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality" appears, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In this application, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In this application, unless otherwise clearly stipulated and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity in description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A waste ink collection box, characterized in that: The waste ink collection box comprises: A body, wherein the body is provided with a receiving cavity, and the body is provided with a liquid inlet portion, a liquid discharge portion, and a deformable first isolating member; the first isolating member is located inside the receiving cavity, and divides the receiving cavity into a first chamber and a second chamber, the liquid inlet portion is communicated with the first chamber, and the liquid discharge portion is communicated with the second chamber; the first chamber is used to collect waste liquid, and the second chamber is used to store maintenance liquid; When the maintenance fluid in the second chamber is discharged outward through the drain portion, the first isolation 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 collection box according to claim 1, characterized in that: There are two second chambers, there are two drainage parts, and the two drainage parts are connected to the two second chambers in a one-to-one correspondence.

3. The waste ink collection box according to claim 2, characterized in that: The liquid inlet portion and each of the liquid discharge portions are located on the same side of the body.

4. The waste ink collection box according to claim 2, characterized in that: The main body is provided with a separation wall, which is located inside the accommodating cavity and connected to the inner wall of the accommodating cavity. The first isolation member is connected to the separation wall, and the two cooperate to separate the accommodating cavity into a first chamber and a second chamber.

5. The waste ink collection box according to claim 4, characterized in that: There are two first isolation members and they are respectively located on opposite sides of the isolation wall. One of the first isolation members, the isolation wall and the inner wall of the accommodating cavity cooperate to form one of the second chambers, and the other of the first isolation members, the isolation wall and the inner wall of the accommodating cavity cooperate to form another second chamber.

6. The waste ink collection box according to claim 5, characterized in that: A first flange is provided on the inner wall of the accommodating cavity, a second flange is provided on one side of the isolation wall, and one of the first isolation members is connected to the first flange and the second flange; a third flange is also provided on the inner wall of the accommodating cavity, a fourth flange is provided on the other side of the isolation wall, and another of the first isolation members is connected to the third flange and the fourth flange.

7. The waste ink collection box according to claim 1, characterized in that: The first isolation member is any one of an isolation film, an isolation cloth and an elastic sheet.

8. The waste ink collection box according to claim 1, characterized in that: The main body is provided with a ventilation valve, and the ventilation valve is communicated with the accommodating cavity.

9. The waste ink collection box according to claim 1, characterized in that: The main body is also provided with a deformable second isolating member, and the accommodating cavity is isolated from the outside of the main body by the second isolating member; the waste ink collection box also includes a protective cover that can be openably covered on the main body, and the protective cover is covered on the outside of the second isolating member.

10. A printing device, characterized in that: The printing device comprises the waste ink collecting box according to any one of claims 1 to 9.

11. The printing device according to claim 10, characterized in that: The printing device also includes: a nozzle, an ink stack, a first pump body, a recovery pipeline, a second pump body and a discharge pipeline; the discharge pipeline is respectively connected to the discharge part and the nozzle, the second pump body is arranged on the discharge pipeline, and the second pump body is used to provide power so that the maintenance liquid inside the second chamber enters the nozzle through the discharge pipeline; the nozzle is used to output the waste liquid after cleaning to the ink stack; the recovery pipeline is respectively connected to the liquid inlet part and the ink stack, the first pump body is arranged on the recovery pipeline, and the first pump body is used to provide power so that the waste liquid of the ink stack enters the first chamber through the recovery pipeline.

12. The printing device according to claim 11, characterized in that: The second chambers are provided with two, and the discharge pipeline includes two first branches, a main pipe and two first switch valves, one end of each of the first branches is respectively connected to the discharge part of each of the second chambers, each of the first switch valves is correspondingly arranged on each of the first branches, two of the first branches are connected to the main pipe in parallel, and the main pipe is connected to the nozzle.

13. The printing device according to claim 11 or 12, characterized in that: The printing device also includes an ink sac, a second switching valve, an ink inlet tube and an ink cartridge assembly; the ink sac is used to communicate with the ink cartridge assembly through the ink inlet tube, and the ink sac is also used to communicate with the nozzle; the second switching valve is used to control the connection or disconnection of the ink sac with the nozzle, and is used to control the connection or disconnection of the discharge pipeline with the nozzle.

14. The printing device according to claim 13, characterized in that: The second switch valve comprises a two-position three-way solenoid valve, a first access end and a second access end of the two-position three-way solenoid valve are respectively connected to the discharge pipeline and the ink bag, and an output end of the two-position three-way solenoid valve is connected to the nozzle.

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