Ink cartridge and rotary printer

Abstract

The utility model relates to the technical field of seals, and provides an ink box and a rotary printer. The utility model provides an ink box which comprises an outer shell, an ink storage mechanism and a printing nozzle. The printing nozzle has a printing position and a dismounting position; the outer shell is connected with the printing nozzle, so that the printing nozzle can be switched between a printing position and a dismounting position; the printing nozzle is provided with an ink inlet hole; the ink storage mechanism is detachably arranged on the outer shell and provided with an ink storage cavity and an ink outlet hole capable of being communicated with the ink storage cavity. When the printing nozzle is located at the printing position, the ink outlet hole is communicated with the ink inlet hole; when the printing nozzle is located at the dismounting position, the ink outlet hole and the ink inlet hole are disconnected, and the ink storage mechanism can be dismounted from the outer shell. The technical problem of high ink box replacement cost caused by the fact that the ink storage mechanism cannot be replaced independently in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seal, concretely relates to an ink cartridge and rotary printer. BACKGROUND

[0002] With the continuous progress of science and technology, the method of forming a seal is increasingly diversified. In addition to the traditional stamping method, modern printing technology has also been widely used, including inkjet printing, laser printing, thermal printing, and needle printing in various forms. Among these printing methods, inkjet printers have become the choice of many users due to their relatively low cost and good printing results.

[0003] There are many types of inkjet printers, one of which is a special design called a rotary printer. This type of printer is mainly composed of a shell, an ink cartridge, a drive motor, and a control mechanism. The shell is a cylindrical structure arranged in a vertical direction, with an opening at its lower end; the interior contains key components such as the ink cartridge, drive motor, and control mechanism. The ink cartridge includes a storage mechanism and a printing head. The storage mechanism has a storage cavity and supplies ink to the printing head through its ink outlet. The printing head is located at the end of the storage mechanism away from the drive motor, with an ink inlet, an internal passage, and multiple ink ejection holes. The ink inlet is connected to each ink ejection hole through the internal passage, and the multiple ink ejection holes are arranged at the bottom opening of the shell to form clear seals on paper. The drive motor serves as the power source, with its output shaft coaxially connected to the storage mechanism, thereby driving the entire ink cartridge to rotate. The control mechanism coordinates the operation between the drive motor and the printing head. It can accurately control the rotation of the drive motor and the ejection of ink droplets from the printing head at the appropriate time based on the information to be printed. The working principle is as follows: when starting a printing task, the control mechanism first activates the drive motor, causing the storage mechanism and the printing head to begin rotating around the center axis of the drive motor. At the same time, based on the information to be printed, the control mechanism sends electrical signals to the ink ejection holes at specific locations at regular intervals, prompting them to release the appropriate amount of ink droplets at the right time. Since the printing head rotates with the storage mechanism, it can cover the entire printing area during continuous movement, thereby forming the desired seal.

[0004] Although the above design has certain innovation, it still faces some challenges in actual application. In particular, the problem of consumable replacement is particularly prominent. Specifically, since the position accuracy of the printing head is relatively high, if only the storage mechanism is replaced without simultaneously replacing the printing head, it may cause positional deviation between the two, leading to a decline in printing quality or even causing the rotary printer to malfunction. Therefore, in current practice, the entire ink cartridge, including the storage mechanism and the printing head, is usually replaced as a whole.

[0005] However, this way not only increases the user's maintenance cost, but also affects the overall user experience. Utility model content

[0006] The utility model provides a kind of ink cartridge and rotary printer, to solve the technical problem of high cost of replacing ink cartridge caused by unable to replace ink storage mechanism alone in prior art.

[0007] The above-mentioned purposes of the utility model can be realized by the following technical solutions:

[0008] The utility model provides a kind of ink cartridge, including shell body, ink storage mechanism and print head;The print head has printing position and dismounting position;The shell body is connected the print head, can make the print head switch between the printing position and the dismounting position;The print head has ink inlet hole;The ink storage mechanism is detachably arranged on the shell body, has ink storage cavity and ink outlet hole that can communicate the ink storage cavity;Wherein, when the print head is in printing position, the ink outlet hole is communicated with the ink inlet hole;When the print head is in dismounting position, the ink outlet hole is disconnected with the ink inlet hole, and the ink storage mechanism can be removed from the shell body.

[0009] According to one embodiment of the utility model, the shell body includes accommodating unit and switching unit;The accommodating unit has accommodating cavity and opening;The accommodating cavity is located in the interior of the accommodating unit, and the opening is located on the surface of the accommodating unit and can communicate with the accommodating cavity;The ink storage mechanism is located in the accommodating cavity;The switching unit is rotatably arranged at the opening, and the switching unit is connected to the print head, so that the print head can be switched between the printing position and the dismounting position by the rotatable arrangement;Wherein, when the print head is in printing position, the ink outlet hole is communicated with the ink inlet hole, and the switching unit covers the opening;When the print head is in dismounting position, the ink outlet hole is disconnected with the ink inlet hole, and the opening is exposed, so that the ink storage mechanism can be removed through the opening.

[0010] According to one embodiment of the utility model, the opening is located at the bottom of the accommodating unit;The switching unit has infusion cavity, liquid inlet and liquid outlet;The liquid inlet communicates with the liquid outlet through the infusion cavity;The liquid outlet communicates with the ink inlet hole;When the print head is in printing position, the ink outlet hole is communicated with the liquid inlet;When the print head is in dismounting position, the ink outlet hole is disconnected with the liquid inlet, so that the ink storage mechanism can be removed through the opening.

[0011] According to one embodiment of the utility model, positioning column is equipped on the switching unit and is located at the liquid inlet, the positioning column is arranged gradually expanding along the downward direction of the axial direction of the containing unit, the positioning column has through hole through both ends thereof;When the printing head is in the printing position, the positioning column is embedded in the ink outlet hole;When the printing head is in the dismounting position, the positioning column is located outside the ink outlet hole.

[0012] According to one embodiment of the utility model, the printing head comprises a head body and a flexible circuit board;The switching unit is connected with the head body, and the head body has the ink inlet hole;The flexible circuit board comprises a first segment, a second segment and a third segment connected in sequence;The free end of the first segment is electrically connected with the head body, and the free end of the third segment can be electrically connected with the controller of the rotary printer.

[0013] According to one embodiment of the utility model, the containing unit has a protective channel, and the containing unit comprises a first end and a second end along the axial direction thereof;The opening is located at the second end;The protective channel penetrates the first end and the second end;The first segment is located at the second end;The second segment is located in the protective channel, so that the peripheral wall of the protective channel can surround the second segment;The third segment is located at the first end.

[0014] According to one embodiment of the utility model, a connector is further arranged at the first end, and the second segment is detachably connected with the third segment through the connector.

[0015] According to one embodiment of the utility model, the connector is a zero insertion force socket.

[0016] According to one embodiment of the utility model, the switching unit is detachably connected with the head body.

[0017] The utility model further provides a rotary printer, which comprises: a shell;The ink cartridge of the above embodiment is detachably arranged in the bottom of the shell.

[0018] The ink cartridge and the rotary printer of the utility model have the following characteristics and advantages:

[0019] In the embodiment, the printing head can be switched between a printing position and a dismounting position. In the printing position, the ink outlet hole of the ink storage mechanism is in communication with the ink inlet hole of the printing head, so that the ink can be normally supplied and printing can be performed. In the dismounting position, the ink outlet hole is disconnected from the ink inlet hole, and at this time, the ink storage mechanism can be dismounted from the shell. This design enables the user to only replace the ink storage mechanism during the maintenance of the ink cartridge, without replacing the entire ink cartridge, especially without simultaneously replacing the printing head, thereby effectively reducing the cost of replacing consumables. In addition, the shell can accurately control the position of the printing head, ensure the accurate connection of the printing head and the ink storage mechanism, and avoid the printing quality problem caused by the positional deviation. Through this ink cartridge design, the user can not only reduce the maintenance cost, but also improve the use experience, avoid the waste of the printing head, and ensure the continuous and normal operation of the rotary printer. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 is an exploded view of the ink cartridge from another angle, in which the printing head is in the dismounting position;

[0022] Figure 2 is an exploded view of the ink cartridge from another angle, in which the printing head is in the dismounting position;

[0023] Figure 3 is a perspective view of the ink cartridge, in which the printing head is in the printing position;

[0024] Figure 4 is a perspective view of the ink cartridge, in which the printing head is in the dismounting position;

[0025] Figure 5 is a sectional view of the shell;

[0026] Figure 6 is a sectional view of the ink storage mechanism.

[0027] 100, ink cartridge; 1, outer shell; 11, containing unit; 1101, containing cavity; 1102, opening; 1103, protection channel; 111, first end; 112, second end; 12, switching unit; 121, positioning column; 1210, through hole; 2, ink storage mechanism; 21, ink storage cavity; 22, ink outlet hole; 3, printing nozzle; 31, nozzle body; 32, flexible circuit board; 321, first segment; 322, second segment; 323, third segment; 4, connector; O, axis of the containing unit. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for description purposes and to distinguish similar objects, and there is no sequence between the two, nor can it be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "at least one" is one or more, and the meaning of "multiple" is two or more. Here, the use of the term "may" is intended to indicate that any attribute described "may" is optional.

[0030] In the present embodiment, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect", "fix" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0031] Embodiment one

[0032] As Figures 1 to 6As shown, the utility model provides a ink box 100, including shell body 1, ink storage mechanism 2 and print head 3, print head 3 has printing position and dismounting position, shell body 1 connects print head 3, can make print head 3 switch between printing position and dismounting position, print head 3 has ink inlet hole, ink storage mechanism 2 is detachably arranged on shell body 1, has ink storage cavity 21 and the ink outlet hole 22 that can communicate ink storage cavity 21, wherein, when print head 3 is in printing position, ink outlet hole 22 is communicated with ink inlet hole, when print head 3 is in dismounting position, ink outlet hole 22 is disconnected with ink inlet hole, and ink storage mechanism 2 can be removed from shell body 1.

[0033] In specific implementation, print head 3 can switch between printing position and dismounting position. When in printing position, ink outlet hole 22 of ink storage mechanism 2 is communicated with ink inlet hole of print head 3, so that ink can be normally supplied and printing is performed. When in dismounting position, ink outlet hole 22 is disconnected with ink inlet hole, at this time, ink storage mechanism 2 can be removed from shell body 1. This design makes user only replace ink storage mechanism 2 during maintenance of ink box 100, without replacing the whole ink box 100, especially without replacing print head 3 at the same time, thereby effectively reducing the cost of consumable replacement. In addition, shell body 1 can accurately control the position of print head 3, ensure the accurate connection of print head 3 and ink storage mechanism 2, and avoid the printing quality problem caused by position deviation. Through this ink box 100 design, user can not only reduce maintenance cost, but also improve the use experience, avoid the waste of print head 3, and ensure the continuous normal operation of rotary printer.

[0034] In the embodiment, ink storage mechanism 2 can be in cylindrical shape and can be accommodated in shell body 1. Print head 3 can be located at the bottom of ink storage mechanism 2. Print head 3 can be the existing technology, for example, print head 3 can be a thermal bubble jet print head.

[0035] According to one embodiment of the utility model, shell body 1 includes accommodating unit 11 and switching unit 12. Accommodating unit 11 has accommodating cavity 1101 and opening 1102. Accommodating cavity 1101 is located inside accommodating unit 11, and opening 1102 is located on the surface of accommodating unit 11 and can communicate with accommodating cavity 1101. Ink storage mechanism 2 is located in accommodating cavity 1101. Switching unit 12 is rotatably arranged at opening 1102. Switching unit 12 is connected with print head 3 and can switch print head 3 between printing position and dismounting position by being rotatably arranged. When print head 3 is in printing position, ink outlet hole 22 is communicated with ink inlet hole, and switching unit 12 covers opening 1102. When print head 3 is in dismounting position, ink outlet hole 22 is disconnected with ink inlet hole, and opening 1102 is exposed to allow ink storage mechanism 2 to be removed through opening 1102.

[0036] In specific implementation, the accommodating unit 11 is internally provided with an accommodating cavity 1101 for storing the ink storage mechanism 2, and the ink storage mechanism 2 can be removed through an opening 1102; the switching unit 12 is arranged at the opening 1102 and can be connected with the printing nozzle 3, and the printing nozzle 3 can be switched between the printing position and the dismounting position by rotating the switching unit 12. As shown in Figure 3 , when the printing nozzle 3 is in the printing position, the switching unit 12 covers the opening 1102, at this time, the ink outlet hole 22 of the ink storage mechanism 2 is in communication with the ink inlet hole of the printing nozzle 3, which ensures smooth supply of ink and guarantees the stability of printing; when the printing nozzle 3 is in the dismounting position, as shown in Figure 4 , the switching unit 12 is rotated to expose the opening 1102, at this time, the printing nozzle 3 is separated from the ink storage mechanism 2, the ink outlet hole 22 is disconnected from the ink inlet hole, and the opening 1102 is exposed, so that the user can easily remove the ink storage mechanism 2 through the opening 1102 for replacement or maintenance. This design greatly improves the maintenance efficiency of the ink cartridge 100, and the user only needs to replace the ink storage mechanism 2, thereby reducing the cost of consumables. At the same time, the accurate positioning of the switching unit 12 ensures the accuracy of the connection position of the printing nozzle 3 and the ink storage mechanism 2, avoiding printing problems caused by position errors, for example, if the position is not accurate, the printing nozzle 3 may not be able to supply ink normally. Therefore, through this structural arrangement, the printing effect and the reliability of the equipment are improved.

[0037] In specific implementation, the printing nozzle 3 can be switched between the printing position and the dismounting position. In the printing position, the ink outlet hole 22 of the ink storage mechanism 2 is in communication with the ink inlet hole of the printing nozzle 3, so that the ink can be normally supplied and printed; in the dismounting position, the ink outlet hole 22 is disconnected from the ink inlet hole, at this time, the ink storage mechanism 2 can be removed from the outer shell 1. This design enables the user to only replace the ink storage mechanism 2 during the maintenance of the ink cartridge 100, without replacing the entire ink cartridge 100, especially without replacing the printing nozzle 3 at the same time, thereby effectively reducing the cost of replacing consumables. In addition, the outer shell 1 can accurately control the position of the printing nozzle 3, ensuring the accurate connection of the printing nozzle 3 and the ink storage mechanism 2, and avoiding problems of printing quality caused by position deviation. Through this design of the ink cartridge 100, the user not only can reduce the maintenance cost, but also can improve the use experience, avoid waste of the printing nozzle 3, and ensure the continuous and normal operation of the rotary printer.

[0038] In some embodiments, when the printing nozzle 3 is in the printing position, the switching unit 12 is clamped to the edge of the opening 1102.

[0039] According to one embodiment of the present application, the opening 1102 is located at the bottom of the accommodating unit 11; the switching unit 12 has an infusion cavity, an inlet and an outlet; the inlet is connected to the outlet through the infusion cavity; the outlet is connected to the ink inlet hole; when the printing nozzle 3 is in the printing position, the ink outlet hole 22 is connected to the inlet; when the printing nozzle 3 is in the disassembly position, the ink outlet hole 22 is disconnected from the inlet, so that the ink storage mechanism 2 can be disassembled through the opening 1102.

[0040] In specific implementation, when the printing nozzle 3 is in the printing position, the ink outlet hole 22 of the ink storage mechanism 2 is connected to the inlet of the switching unit 12, and the ink can smoothly flow from the ink storage mechanism 2 through the ink outlet hole 22 into the inlet of the switching unit 12, then pass through the infusion cavity and the outlet, and finally be transmitted to the ink inlet hole of the printing nozzle 3, realizing stable ink supply to ensure normal printing. However, when the printing nozzle 3 is in the disassembly position, the ink outlet hole 22 is disconnected from the inlet, and the ink supply is cut off, at which time the user can easily disassemble the ink storage mechanism 2 from the accommodating unit 11, facilitating replacement or maintenance operation. This design ensures the simplicity of operation and the efficiency of maintenance.

[0041] In the present embodiment, the switching unit 12 is designed as a circular plate structure, with an infusion cavity inside for ink transmission. The inlet is located at the upper end, and the outlet is located at the lower end, ensuring smooth flow of ink. The switching unit 12 not only serves as a support for the printing nozzle 3 and switches its position, but also acts as a communication component between the ink storage mechanism 2 and the printing nozzle 3. This means that the printing nozzle 3 is not directly mechanically connected to the ink storage mechanism 2, but achieves ink transmission and position switching through the switching unit 12, thereby ensuring the stability and accuracy of the system.

[0042] According to one embodiment of the present application, a positioning column 121 is provided on the switching unit 12 and located at the inlet, the positioning column 121 is gradually expanded in the downward direction along the axial direction O of the accommodating unit 11, and the positioning column 121 has a through hole 1210 passing through both ends; when the printing nozzle 3 is in the printing position, the positioning column 121 is embedded in the ink outlet hole 22; when the printing nozzle 3 is in the disassembly position, the positioning column 121 is located outside the ink outlet hole 22.

[0043] In the specific implementation, when the printing head 3 is in the printing position, the positioning column 121 is precisely embedded in the ink outlet hole 22 of the ink storage mechanism 2, so that the ink can be smoothly transmitted from the ink outlet hole 22 to the liquid inlet, and stable ink supply is achieved. When the printing head 3 is in the disassembling position, the positioning column 121 is withdrawn from the ink outlet hole 22, facilitating the disassembling or maintenance of the ink storage mechanism 2. Through the structure, when the printing head 3 is in the printing position, the precise butt joint of the ink outlet hole 22 and the liquid inlet is ensured, the problems of ink leakage or transmission interruption caused by inaccurate butt joint are effectively avoided, and the reliability and smoothness of printing are improved.

[0044] As shown in Figure 2 In some embodiments, the upper end center position of the accommodating unit 11 can be provided with a avoiding hole, and the upper end center position of the ink storage mechanism 2 can be provided with a connecting column for connecting the output shaft of the driving motor of the rotary printer. In the state that the ink storage mechanism 2 is located in the accommodating cavity 1101, the connecting column can penetrate through the avoiding hole.

[0045] According to an embodiment of the present application, the printing head 3 comprises a head body 31 and a flexible circuit board 32; the switching unit 12 is connected to the head body 31, and the head body 31 has an ink inlet hole; the flexible circuit board 32 comprises a first segment 321, a second segment 322 and a third segment 323 connected in sequence; the free end of the first segment 321 is electrically connected to the head body 31, and the free end of the third segment 323 can be electrically connected to the controller of the rotary printer.

[0046] In the embodiment, the head body 31 and the flexible circuit board 32 can be prior art.

[0047] According to an embodiment of the present application, the accommodating unit 11 has a protection channel 1103, and the accommodating unit 11 comprises a first end 111 and a second end 112 along the axial direction O; the opening 1102 is located at the second end 112; the protection channel 1103 penetrates through the first end 111 and the second end 112; the first segment 321 is located at the second end 112; the second segment 322 is located in the protection channel 1103, so that the peripheral wall of the protection channel 1103 can surround the second segment 322; and the third segment 323 is located at the first end 111.

[0048] In the specific implementation, the design of the protection channel 1103 ensures that the second segment 322 of the flexible circuit board 32 is surrounded by the peripheral wall, providing the second segment 322 with all-round physical protection, preventing external mechanical force from causing damage to the second segment 322, and thus enhancing the overall stability and service life of the ink cartridge 100 and the printer.

[0049] According to an embodiment of the present application, a connector 4 is further arranged at the first end 111, and the second segment 322 is detachably connected to the third segment 323 through the connector 4.

[0050] In particular, since the third section 323 is arranged inside the rotary printer and between the driving motor and the ink cartridge 100, the user generally does not directly contact the third section 323, and the probability of damage to the third section 323 is low; while the user often contacts the first section 321 and the second section 322 when disassembling the ink cartridge 100, and the probability of damage to the first section 321 and the second section 322 is high. Based on this, through the above structural arrangement, the user can only replace the first section 321 and the second section 322 during maintenance, without replacing the third section 323, thereby reducing the maintenance cost.

[0051] In the present embodiment, the connector 4 can be a prior art.

[0052] According to an embodiment of the present application, the connector 4 is a zero insertion force socket.

[0053] In particular, by adopting the zero insertion force socket as the connector 4, the connection and disconnection between the second section 322 and the third section 323 of the flexible circuit board 32 become more convenient, without the need to exert excessive insertion force. This design reduces wear and tear during insertion and removal, prolonging the service life of the connector 4. In addition, the zero insertion force socket can ensure the stability of the connection during insertion and removal, avoiding the problem of poor contact due to frequent operation, thereby further improving the reliability of the rotary printer.

[0054] In the present embodiment, the zero insertion force socket can be a prior art.

[0055] According to an embodiment of the present application, the switching unit 12 is detachably connected to the nozzle body 31.

[0056] In particular, through the above structural arrangement, the user only needs to disassemble the first section 321, the second section 322 and the nozzle body 31 during maintenance and replacement, without the need to disassemble the third section 323, thereby reducing the maintenance cost.

[0057] Embodiment two

[0058] The present application also provides a rotary printer, comprising: a housing and the ink cartridge 100 of the above embodiment, the ink cartridge 100 being detachably arranged in the bottom of the housing. The specific structure, working principle and beneficial effects of the ink cartridge 100 are the same as those of embodiment one, and will not be repeated here.

[0059] It can be understood that, since the housing and the bottom of the containing unit 11 both have an opening, through the above structural arrangement, the replacement of the ink storage mechanism 2 can be realized through the opening without disassembling the housing, thereby improving the ink replacement efficiency.

[0060] Method for disassembling the ink storage mechanism 2:

[0061] When the rotary printer is out of ink, first rotate the switching unit 12 at the bottom of the casing. Rotating the switching unit 12 will move the print head 3, switching its position from the printing position to the disassembly position. Figure 3 Become Figure 4 At this time, the opening 1102 at the bottom of the receiving unit 11 is open. After the opening 1102 at the bottom of the receiving unit 11 is opened, the ink storage mechanism 2 can be pulled out downwards, thereby completing the disassembly of the ink storage mechanism 2.

[0062] Disassembly method of the first section 321, the second section 322 and the nozzle body 31:

[0063] When it is necessary to replace the first segment 321, the second segment 322, and the printhead body 31 as a whole, the entire ink cartridge 100 can be pulled out from the bottom of the casing, as follows: Figure 3 As shown, after obtaining the ink cartridge 100, disconnect the connection between the second segment 322 and the connector 4, and then pull the printhead body 31 down forcefully from the bottom of the ink cartridge 100 to remove the printhead body 31 from the lower end of the switching unit 12. Continue to pull the printhead body 31 down forcefully to pull out the first segment 321 and the second segment 322 from the protective channel 1103, thereby completing the disassembly of the first segment 321, the second segment 322 and the printhead body 31.

[0064] The above are only a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.

Claims

1. An ink cartridge, characterized by, The ink cartridge comprises an outer shell (1), an ink storage mechanism (2) and a printing head (3); The printing head (3) has a printing position and a dismounting position; The outer shell (1) is connected with the printing head (3) and can switch the printing head (3) between the printing position and the dismounting position; The printing head (3) has an ink inlet hole; The ink storage mechanism (2) is detachably arranged on the outer shell (1) and has an ink storage cavity (21) and an ink outlet hole (22) which can communicate with the ink storage cavity (21); when the printing head (3) is in the printing position, the ink outlet hole (22) communicates with the ink inlet hole; when the printing head (3) is in the dismounting position, the ink outlet hole (22) is disconnected with the ink inlet hole, and the ink storage mechanism (2) can be dismounted from the outer shell (1).

2. The ink cartridge of claim 1, wherein The outer shell (1) comprises a containing unit (11) and a switching unit (12); The containing unit (11) has a containing cavity (1101) and an opening (1102); the containing cavity (1101) is located in the interior of the containing unit (11), and the opening (1102) is located on the surface of the containing unit (11) and can communicate with the containing cavity (1101); the ink storage mechanism (2) is located in the containing cavity (1101); The switching unit (12) is rotatably arranged at the opening (1102), and the switching unit (12) is connected with the printing head (3) and can switch the printing head (3) between the printing position and the dismounting position through the rotatable arrangement; When the printing head (3) is in the printing position, the ink outlet hole (22) communicates with the ink inlet hole, and the switching unit (12) covers the opening (1102); when the printing head (3) is in the dismounting position, the ink outlet hole (22) is disconnected with the ink inlet hole, and the opening (1102) is exposed so that the ink storage mechanism (2) can be dismounted through the opening (1102).

3. The ink cartridge according to claim 2, wherein The opening (1102) is located at the bottom of the containing unit (11); The switching unit (12) has a liquid conveying cavity, a liquid inlet and a liquid outlet; the liquid inlet communicates with the liquid outlet through the liquid conveying cavity; and the liquid outlet communicates with the ink inlet hole; When the printing head (3) is in the printing position, the ink outlet hole (22) communicates with the liquid inlet; when the printing head (3) is in the dismounting position, the ink outlet hole (22) is disconnected with the liquid inlet so that the ink storage mechanism (2) can be dismounted through the opening (1102).

4. The ink cartridge of claim 3, wherein A positioning column (121) is arranged on the switching unit (12) and at the liquid inlet, the positioning column (121) is arranged in a gradually expanding manner along the downward direction of the axial direction (O) of the containing unit (11), the positioning column (121) has a through hole (1210) penetrating through both ends thereof; when the printing head (3) is in the printing position, the positioning column (121) is embedded in the ink outlet hole (22); when the printing head (3) is in the disassembling position, the positioning column (121) is located outside the ink outlet hole (22).

5. The ink cartridge according to claim 3 or 4, characterized in that, The printing head (3) comprises a head body (31) and a flexible circuit board (32); The switching unit (12) is connected to the head body (31), and the head body (31) has the ink inlet hole; The flexible circuit board (32) comprises a first section (321), a second section (322) and a third section (323) connected in sequence; the free end of the first section (321) is electrically connected to the head body (31), and the free end of the third section (323) can be electrically connected to a controller of a rotary printer.

6. The ink cartridge according to claim 5, wherein The containing unit (11) has a protection channel (1103), and the containing unit (11) comprises a first end (111) and a second end (112) along the axial direction (O) thereof; The opening (1102) is located at the second end (112); The protection channel (1103) penetrates through the first end (111) and the second end (112); The first section (321) is located at the second end (112); The second section (322) is located in the protection channel (1103), so that the peripheral wall of the protection channel (1103) can surround the second section (322); The third section (323) is located at the first end (111).

7. The ink cartridge of claim 6, wherein A connector (4) is further included and arranged at the first end (111), and the second section (322) is detachably connected to the third section (323) through the connector (4).

8. The ink cartridge of claim 7, wherein The connector (4) is a zero insertion force socket.

9. The ink cartridge of claim 5, wherein, The switching unit (12) is detachably connected to the head body (31).

10. A rotary printer characterized by comprising: Comprise: A housing; The ink cartridge according to any one of claims 1 to 9 is detachably arranged in the bottom of the housing.

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