Ink box structure, piezoelectric sprayer and ink-jet printing system

Abstract

The invention relates to an ink box structure, a piezoelectric nozzle and an ink-jet printing system, the ink box structure comprises a bottom shell, the bottom surface of the bottom shell is provided with a mounting structure for mounting a chip, and the bottom surface of the bottom shell is provided with a through first communication hole; the mounting seat is inserted into the bottom shell, and a second through communication hole communicating with the second communication hole is formed in the top surface of the mounting seat; the ink bag is mounted on the mounting seat, and a liquid outlet of the ink bag is communicated with a liquid inlet of the chip through the second communication hole and the first communication hole; the bottom of the protective shell is open, the protective shell covers the mounting base, and the mounting base blocks the opening of the protective shell to form a sealed cavity; and the sealing cavity is communicated with an external negative pressure device through the ventilation structure. The functional liquid is supplied to the chip through ink flowing out of the ink bag, an ink supply system does not need to be additionally arranged, the occupied space and the cost are saved, all parts of the ink box structure are arranged in a split mode and are easy and convenient to assemble, the manufacturing cost is low, and the ink-jet printing technology is applied and popularized.

Description

Technical Field

[0001] The present application relates to the field of inkjet printing technology, and in particular to an ink cartridge structure, a piezoelectric nozzle, and an inkjet printing system. Background Art

[0002] Inkjet printing, a contactless, pressureless, and maskless technology for display device processing, can precisely apply tiny droplets (in the picoliter or femtoliter range) to the desired location. The solvent evaporates, dries, and solidifies to form a thin film. This makes it easy to create extremely high-resolution display devices, especially when processing large-scale panels. Conventionally, piezoelectric printheads are used for printing.

[0003] In related technologies, a piezoelectric printhead consists of an ink cartridge and a chip. The ink cartridge supplies ink to the chip, which then drives the ink ejection. Typically, the ink cartridge is connected to an external ink supply system, which continuously supplies ink to the cartridge to maintain ink supply to the chip.

[0004] However, when the printing device is desktop-level or a small device for experimental use, arranging the ink supply system not only takes up a large space and has a complex structure, but also has a high cost, making it difficult to promote the printing device on a large scale, which is not conducive to the promotion and application of inkjet printing technology. Summary of the Invention

[0005] The embodiments of the present application provide an ink cartridge structure, a piezoelectric nozzle and an inkjet printing system to solve the technical problems in related technologies that the piezoelectric nozzle requires an ink supply system to supply ink to the ink cartridge, which occupies a large space, has a complex structure, is expensive, and is difficult to promote and apply.

[0006] In a first aspect, an ink cartridge structure is provided, comprising:

[0007] A bottom shell, wherein the top of the bottom shell is open, a mounting structure for mounting a chip is provided on the bottom surface of the bottom shell, and a first communicating hole is provided through the bottom surface of the bottom shell, wherein the first communicating hole is used to communicate with the liquid inlet of the chip;

[0008] A mounting seat, the mounting seat is inserted into the bottom shell, the mounting seat is fixedly connected to the bottom shell, and a second communicating hole is opened on the top surface of the mounting seat, and the first communicating hole is connected to the second communicating hole;

[0009] an ink sac, the ink sac being mounted on the mounting seat, the liquid outlet of the ink sac being connected to the liquid inlet of the chip through the second communicating hole and the first communicating hole;

[0010] a protective shell, wherein the bottom of the protective shell is opened, the protective shell cover is arranged on the mounting seat, the mounting seat blocks the opening of the protective shell to form a sealed cavity, and the ink sac is located in the sealed cavity;

[0011] A ventilation structure is connected to the sealed cavity, and the sealed cavity is connected to an external negative pressure device through the ventilation structure.

[0012] In some embodiments, the ink cartridge structure further includes a connecting structure, wherein the mounting seat and the bottom shell are fixedly connected by the connecting structure; the connecting structure includes a first clamping member and a second clamping member, wherein one of the first clamping member and the second clamping member is connected to the inner bottom surface of the bottom shell, and the other is connected to the bottom surface of the mounting seat;

[0013] The first clamping member includes a first clamping strip and at least one first clamping block, the first clamping block is connected to a side surface of the first clamping strip, and the first clamping block includes a first guiding inclined surface and a first limiting surface;

[0014] The second clamping member includes a second clamping strip and at least one second clamping block, the second clamping block is connected to a side surface of the second clamping strip, and the second clamping block includes a second limiting surface;

[0015] Among them, as the mounting seat is inserted into the bottom shell, the first guide bevel pushes the second clip block to make the first clip strip and the second clip strip move away from each other and deform until the first guide bevel is no longer in contact with the second clip block, and then the first clip strip and the second clip strip return to their positions, and the first limiting surface and the second limiting surface are pressed tightly in the insertion direction of the mounting seat.

[0016] In some embodiments, when the first limiting surface and the second limiting surface are pressed against each other, the first clamping strip or the second clamping strip connected to the mounting seat is pressed against the inner bottom surface of the bottom shell.

[0017] In some embodiments, a mounting groove is provided on the top surface of the mounting seat, and the second communication hole is opened at the bottom of the mounting groove;

[0018] The ink bag includes a bag body and a connecting head. The connecting head is inserted into the mounting groove and connected with the second connecting hole, so that the ink bag is plugged and matched with the mounting seat.

[0019] In some embodiments, a limiting groove is arranged on the top surface of the mounting seat, and the capsule is suitable for being inserted into the limiting groove to limit the capsule.

[0020] In some embodiments, a portion of the mounting seat is recessed to form the mounting groove, and a connecting sleeve is simultaneously formed, wherein the connecting sleeve is pressed against the inner bottom surface of the bottom shell and is connected to the first communicating hole.

[0021] In some embodiments, an upwardly protruding boss is provided on the inner bottom surface of the bottom shell, the first communicating hole is opened on the boss and passes through the bottom shell, and the connecting sleeve is tightly pressed against the boss.

[0022] In some embodiments, the ink cartridge structure further includes two partitions, both of which are connected to the inner bottom surface of the bottom shell, and the two partitions are respectively located on opposite sides of the boss, and the partitions are in contact with two opposite inner side surfaces of the bottom shell;

[0023] Wherein, a liquid accumulation cavity is formed between the partition and the boss.

[0024] In some embodiments, the ink cartridge structure further includes a connecting tube, which is fixed to the bottom shell, passes through the first connecting hole and the second connecting hole, and is inserted into the ink sac.

[0025] In some embodiments, the ventilation structure includes:

[0026] a first vent hole, the first vent hole being opened through the edge of the bottom surface of the bottom shell;

[0027] The second vent hole is formed through the mounting seat, the first vent hole is communicated with the second vent hole, and the second vent hole is communicated with the sealing cavity.

[0028] The beneficial effects of the technical solution provided by this application include:

[0029] An embodiment of the present application provides an ink cartridge structure for supplying a functional liquid to a chip. The functional liquid in the ink sac flows out by its own gravity. An external negative pressure device creates a negative pressure environment within the sealed chamber, thereby offsetting the gravity of the functional liquid and causing the functional liquid to reach a critical state of outflow. After the functional liquid in the ink sac is discharged by gravity, it passes through the second connecting hole of the mounting base and the first connecting hole of the bottom shell and is supplied to the liquid inlet of the chip. Therefore, this ink cartridge structure can achieve ink supply to the chip without the need for an additional ink supply system, saving space and cost, providing a foundation for miniaturization and desktop-based inkjet printing equipment, and further facilitating the promotion and application of inkjet printing technology.

[0030] In addition, the bottom shell, mounting seat, ink bag, and protective shell are arranged separately and assembled to form an ink cartridge structure, which facilitates the assembly of various parts of the ink cartridge structure after batch manufacturing, thereby saving the cost of the ink cartridge structure and adapting to the consumer demand for batch production of the ink cartridge structure.

[0031] Finally, when the various components are assembled into the ink cartridge structure, the mounting base is snap-fitted to the bottom shell, the ink sac is mounted on the mounting base, and finally, the protective shell is placed over the ink sac and placed on top of the mounting base. The protective shell and mounting base are then bonded together to complete the assembly of the ink cartridge structure. This simple assembly process offers high efficiency and low cost. Furthermore, the bottom shell, mounting base, ink sac, and protective shell all align in the same direction, making it easy to develop supporting assembly equipment. This supports mass production of ink cartridge structures and facilitates the widespread application of inkjet printing technology.

[0032] In a second aspect, a piezoelectric nozzle is provided, comprising the ink cartridge structure as described above.

[0033] Another embodiment of the present application provides a piezoelectric nozzle. Since the piezoelectric nozzle includes the above-mentioned ink cartridge structure, the beneficial effects of the piezoelectric nozzle are consistent with the beneficial effects of the above-mentioned ink cartridge structure, which will not be repeated here.

[0034] In a third aspect, an inkjet printing system is provided, comprising the ink cartridge structure described above, and / or the piezoelectric nozzle described above.

[0035] Another embodiment of the present application provides an inkjet printing system. Since it includes the above-mentioned ink cartridge structure and / or the piezoelectric nozzle as described above, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned ink cartridge structure and piezoelectric nozzle, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 A schematic diagram of the ink cartridge structure provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of an ink cartridge structure provided in an embodiment of the present application from another perspective;

[0039] Figure 3 A schematic diagram of the internal structure of an ink cartridge provided in an embodiment of the present application;

[0040] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0041] Figure 5 An exploded view of the ink cartridge structure provided in an embodiment of the present application;

[0042] Figure 6An exploded view of the ink cartridge structure provided in an embodiment of the present application from another perspective;

[0043] Figure 7 A partial cross-sectional view of the mounting base and bottom shell provided in an embodiment of the present application.

[0044] In the figure: 1. bottom shell; 1a. first connecting hole; 1b. mounting structure; 11. boss; 2. mounting seat; 2a. second connecting hole; 2b. mounting groove; 2c. limiting groove; 21. connecting sleeve; 22. stop bar; 3. ink sac; 31. sac body; 32. connecting head; 4. protective shell; 41. flange; 5. ventilation structure; 5a. first ventilation hole; 5b. second ventilation hole; 6. connecting structure; 61. first clamping member; 611. first clamping strip; 612. first clamping block; 612a. first guiding slope; 612b. first limiting surface; 62. second clamping member; 621. second clamping strip; 622. second clamping block; 622a. second guiding slope; 622b. second limiting surface; 7. partition; 8. connecting pipe; 9. sealing ring; a. sealing chamber; b. liquid accumulation chamber. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] The embodiments of the present application provide an ink cartridge structure, a piezoelectric nozzle and an inkjet printing system. The functional liquid in the ink cartridge structure flows out under the action of its own gravity to supply the functional liquid to the chip. The ink cartridge structure acts on the ink bag through air pressure to offset the gravity of the functional liquid to limit the outflow of the functional liquid. Therefore, there is no need to arrange an additional ink supply system, which saves space and cost, and provides a basis for miniaturization and desktopization of inkjet printing equipment. The various parts of the ink cartridge structure are arranged separately and assembled simply, with low manufacturing cost, and the application of inkjet printing technology is promoted. The present application solves the technical problem in the related art that the piezoelectric nozzle requires an ink supply system to supply ink to the ink cartridge, which has a large space occupation, a complex structure, and a high cost, making it difficult to promote and apply.

[0047] Reference Figure 1-Figure 3 , an ink cartridge structure, including a bottom shell 1, a mounting seat 2, an ink sac 3 and a protective shell 4, the bottom shell 1, the mounting seat 2, the ink sac 3 and the protective shell 4 are assembled to form the ink cartridge structure.

[0048] Reference Figure 1-Figure 3The bottom shell 1 is open at the top, and the mounting seat 2 is inserted into the bottom shell 1. The ink sac 3 is mounted on the top surface of the mounting seat 2. The bottom of the protective shell 4 is open, and the protective shell 4 covers the mounting seat 2. The mounting seat 2 blocks the opening of the protective shell 4 to form a sealed cavity a, and the ink sac 3 is located within the sealed cavity a. When assembling the bottom shell 1, mounting seat 2, ink sac 3, and protective shell 4, the mounting seat 2 is inserted into the bottom shell 1, and the ink sac 3 is then installed on the mounting seat 2. Finally, the protective shell 4 is placed on the top surface of the mounting seat 2 to complete the assembly of the ink cartridge structure.

[0049] With this arrangement, the bottom shell 1, mounting base 2, ink sac 3, and protective shell 4 are arranged separately and assembled to form the ink cartridge structure. This facilitates batch manufacturing of the various components of the ink cartridge structure and subsequent assembly, thereby reducing the cost of the ink cartridge structure and meeting the consumer demand for mass production of ink cartridge structures. Furthermore, the assembly steps of the ink cartridge structure are simple, with high assembly efficiency and low assembly cost.

[0050] Reference Figure 1-Figure 3 The bottom surface of the bottom case 1 is provided with a mounting structure 1b for mounting the chip. In this embodiment, the mounting structure 1b comprises an embedding groove into which the chip is bonded and secured. A first communication hole 1a is formed through the bottom surface of the bottom case 1 and is located at the bottom of the embedding groove. The first communication hole 1a is connected to the liquid inlet of the chip.

[0051] Reference Figure 3 、 Figure 5 and Figure 6 The top surface of the mounting base 2 is provided with a second connecting hole 2a extending therethrough, communicating with the first connecting hole 1a. After the ink sac 3 is mounted on the mounting base 2, the liquid outlet of the ink sac 3 communicates with the second connecting hole 2a. This connects the ink sac 3 to the liquid inlet of the chip.

[0052] With this arrangement, the ink sac 3 can be connected to the chip, thus realizing the liquid supply basis of the ink sac 3 to the chip.

[0053] Reference Figure 3 、 Figure 5 and Figure 6 Furthermore, the ink cartridge structure further includes a ventilation structure 5. The ventilation structure 5 is communicated with the sealed cavity a, and the sealed cavity a is communicated with the external negative pressure device through the ventilation structure 5.

[0054] With this arrangement, the negative pressure device creates a negative pressure within sealed chamber a, using the air pressure to counteract the gravity of the functional liquid within ink sac 3, thereby limiting its outflow. Controlling the air pressure thus controls the flow and supply of the functional liquid. The functional liquid in ink sac 3 flows toward the chip, ensuring its supply. This ink cartridge structure enables both ink supply and control to the chip without requiring a separate ink supply system, saving space and cost. This provides a foundation for miniaturized, desktop-scale inkjet printing equipment, further facilitating the widespread application of inkjet printing technology.

[0055] The ventilation structure 5 is directly connected to the protective shell 4. Specifically, air holes are opened on the side of the protective shell 4.

[0056] Reference Figure 3 、 Figure 5 and Figure 6 In this embodiment, the ventilation structure 5 includes a first ventilation hole 5a and a second ventilation hole 5b.

[0057] The first vent hole 5a is formed through the edge of the bottom surface of the bottom shell 1. The second vent hole 5b is formed through the mounting seat 2, and the first vent hole 5a is communicated with the second vent hole 5b, and the second vent hole 5b is communicated with the sealed cavity a.

[0058] In this arrangement, the interface for providing a negative pressure environment to the sealed chamber a is not easily blocked by being connected to the external negative pressure device at the bottom surface of the bottom shell 1, and the position layout is more reasonable.

[0059] Reference Figure 3 、 Figure 5 and Figure 6 Furthermore, the height of the first vent hole 5a provided on the bottom plate of the bottom shell 1 is higher than the height of the first connecting hole 1a provided on the bottom plate of the bottom shell 1, that is, one edge of the bottom plate of the bottom shell 1 is bent upward to form a step to leave installation space below the first vent hole 5a provided on the bottom shell 1.

[0060] In this arrangement, by reserving installation space for the installation of the vent end of the external negative pressure device, the connector of the negative pressure device is placed in the installation space. Therefore, when the chip is installed in the installation structure 1b of the bottom shell 1, the chip is at the lowest position of the ink cartridge, and the connector of the external negative pressure device is prevented from affecting the printing height.

[0061] It should be noted that the distance between the chip and the substrate is the printing height. After the chip is installed on the ink cartridge structure, the chip is at the lowest position of the ink cartridge structure, ensuring that the chip can be as close to the substrate as possible.

[0062] Reference Figure 3 、 Figure 5 and Figure 6 The mounting base 2 is plugged into the bottom shell 1 and fixed with the bottom shell 1 .

[0063] This arrangement allows the mounting base 2 to be directly inserted into the bottom case 1 and secured by snapping, facilitating assembly of the mounting base 2 and the bottom case 1. Furthermore, it facilitates alignment of the second communication hole 2a of the mounting base 2 with the first communication hole 1a of the bottom case 1, eliminating the need for additional alignment.

[0064] Reference Figure 3 、 Figure 5 and Figure 6 The ink cartridge structure further includes a connecting structure 6 , through which the mounting seat 2 and the bottom shell 1 are fixed together.

[0065] Specifically, the connecting structure 6 includes a first clamping member 61 and a second clamping member 62. One of the first clamping member 61 and the second clamping member 62 is mounted on the inner bottom surface of the bottom case 1, and the other is mounted on the bottom surface of the mounting base 2. In this embodiment, the first clamping member 61 is mounted on the bottom surface of the mounting base 2, and the second clamping member 62 is mounted on the inner bottom surface of the bottom case 1.

[0066] Reference Figure 3 、 Figure 5-Figure 7 The first clamping member 61 includes a first clamping strip 611 and at least one first clamping block 612. The first clamping block 612 is fixed to the side of the first clamping strip 611. The first clamping block 612 includes a first guiding inclined surface 612a and a first limiting surface 612b. In this embodiment, the limiting surface is the top surface of the first clamping block 612, and the first guiding inclined surface 612a is a side surface of the first clamping block 612.

[0067] Reference Figure 3 、 Figure 5-Figure 7 The second clamping member 62 includes a second clamping strip 621 and at least one second clamping block 622. The second clamping block 622 is fixed to the side of the second clamping strip 621 and includes a second limiting surface 622b. In this embodiment, the second limiting surface 622b is the bottom surface of the second clamping block 622.

[0068] Reference Figure 3 、 Figure 5-Figure 7 As the mounting base 2 is inserted into the bottom housing 1, the first guide slope 612a pushes against the second clamping block 622, causing the first clamping strip 611 and the second clamping strip 621 to move away from each other and deform until the first guide slope 612a no longer contacts the second clamping block 622. The first clamping strip 611 and the second clamping strip 621 then return to their original positions, and the first limiting surface 612b and the second limiting surface 622b press against each other in the insertion direction of the mounting base 2.

[0069] With this arrangement, under the abutment effect of the first limiting surface 612 b and the second limiting surface 622 b , the mounting seat 2 is limited to be away from the bottom shell 1 , thereby achieving fixation of the mounting seat 2 and the bottom shell 1 .

[0070] Reference Figure 3 、 Figure 5-Figure 7 Furthermore, when the first limiting surface 612b and the second limiting surface 622b are pressed against each other, the first clamping strip 611 or the second clamping strip 621 connected to the mounting seat 2 is pressed against the inner bottom surface of the bottom shell 1.

[0071] In this embodiment, when the first limiting surface 612 b and the second limiting surface 622 b are pressed tightly together, the first clamping strip 611 is pressed tightly against the inner bottom surface of the bottom shell 1 .

[0072] With this arrangement, the first clamping member 61 is pressed against the bottom shell 1 by the first clamping strip 611, and the first clamping block 612 is pressed against the second clamping block 622. Therefore, in the insertion direction of the mounting seat 2, the first clamping member 61 and the second clamping member 62 cannot move relative to each other, so the mounting seat 2 and the bottom shell 1 are more firmly fixed.

[0073] Reference Figure 3 、 Figure 5-Figure 7 Preferably, the second clamping block 622 includes a second guiding slope 622a, which is on the side of the second clamping block 622. When the mounting base 2 is inserted into the mounting base 2, the first guiding slope 612a of the first clamping block 612 contacts the second guiding slope 622a of the second clamping block 622, so that the first clamping block 612 and the second clamping block 622 can push each other more smoothly, and the first clamping strip 611 and the second clamping strip 621 can be pushed and deformed more easily, thereby facilitating the assembly process of the mounting base 2 and the bottom case 1.

[0074] Preferably, two first clamping blocks 612 are provided, and the two first clamping blocks 612 are arranged on the first clamping strip 611 at intervals along the insertion direction of the mounting seat 2 .

[0075] With this arrangement, after the mounting base 2 and the bottom case 1 are assembled, the second clamping block 622 is located between the two first clamping blocks 612, with the first guide slope 612a of the upper first clamping block 612 abutting against the second guide slope 622a of the second clamping block 622, and the first limiting surface 612b of the lower first clamping block 612 engaging with the second limiting surface 622b of the second clamping block 622. By tightening the second clamping block 622, the mounting base 2 and the bottom case 1 are more firmly fixed.

[0076] Reference Figure 3 、 Figure 5-Figure 7 Furthermore, multiple sets of connecting structures 6 are provided. In this embodiment, two sets of connecting structures 6 are provided, and the two sets of connecting structures 6 are located on both sides of the first communication hole 1a. The multiple sets of connecting structures 6 secure the mounting base 2 and the bottom shell 1, ensuring that the bottom shell 1 and the mounting base 2 are more integrated after being fixed and are less likely to shake.

[0077] Reference Figure 3、 Figure 5 and Figure 6 , wherein a mounting groove 2b is provided on the top surface of the mounting seat 2, and the second communicating hole 2a is opened at the bottom of the mounting groove 2b.

[0078] Reference Figure 3 、 Figure 5 and Figure 6 The ink bag 3 includes a bag body 31 and a connecting head 32. The connecting head 32 is inserted into the mounting groove 2b and communicates with the second connecting hole 2a so that the ink bag 3 is plugged into and matched with the mounting seat 2.

[0079] With this arrangement, the ink bag 3 is plugged into the mounting seat 2, which facilitates the fixation of the ink bag 3 and the communication between the ink bag 3 and the second communication hole 2a of the mounting seat 2, without the need for additional structure to connect the ink bag 3 and the mounting seat 2.

[0080] Furthermore, a limiting groove 2c is arranged on the top surface of the mounting seat 2, and the length direction of the limiting groove 2c is arranged along the length direction of the mounting seat 2. The capsule 31 is suitable for being inserted into the limiting groove 2c to limit the capsule 31.

[0081] Reference Figure 3 、 Figure 5 and Figure 6 Specifically, in this embodiment, multiple sets of clamping blocks are fixed to the top surface of the mounting base 2. Each set of clamping blocks includes two clamping blocks, which are spaced apart to form a limiting groove 2c between the two clamping blocks. In other embodiments, the limiting groove 2c is formed by cutting grooves in the surface of the mounting base 2.

[0082] The capsule body 31 of the ink capsule 3 is inserted into the limiting groove 2c to limit the installation position of the ink capsule 3, so as to facilitate the subsequent assembly of the protective shell 4 and to put the ink capsule 3 into the protective shell 4.

[0083] Reference Figure 3 、 Figure 5 and Figure 6 Specifically, part of the mounting seat 2 is recessed to form a mounting groove 2b, and a downwardly protruding connecting sleeve 21 is simultaneously formed.

[0084] This arrangement allows the ink sac 3 to be inserted into the mounting groove 2b, allowing the ink sac 3 to be assembled with the mounting base 2. Furthermore, the connecting sleeve 21 abuts against the inner bottom surface of the bottom shell 1, thereby connecting the first connecting hole 1a and the second connecting hole 2a to form a flow path for the functional fluid within the ink sac 3. This improves the structural utilization of the connecting sleeve 21.

[0085] Reference Figure 3 、 Figure 5 and Figure 6Furthermore, an upwardly convex boss 11 is provided on the inner bottom surface of the bottom shell 1 , the first communication hole 1 a is opened on the boss 11 and passes through the bottom shell 1 , and the connecting sleeve 21 is tightly pressed against the boss 11 .

[0086] This arrangement prevents the functional liquid seeping out of the first connecting hole 1a and the second connecting hole 2a from accumulating in the second connecting hole 2a. After the seeping functional liquid flows from the boss 11 to the inner bottom surface of the bottom shell 1, it will not flow to the second connecting hole 2a due to the restriction of the boss 11, so as to ensure the stability of the functional liquid supply to the chip.

[0087] Reference Figure 3 、 Figure 5 and Figure 6 Furthermore, a sealing ring 9 is embedded in the bottom surface of the connecting sleeve 21, and the connecting sleeve 21 is pressed against the boss 11 through the sealing ring 9 to ensure the connection and sealing between the first connecting hole 1a and the second connecting hole 2a.

[0088] Reference Figure 3 and Figure 5 Furthermore, the ink cartridge structure includes two partitions 7, both of which are fixed to the inner bottom surface of the bottom shell 1. The two partitions 7 are located on opposite sides of the boss 11, and the partitions 7 are in contact with the opposite inner side surfaces of the bottom shell 1. A liquid accumulation chamber b is formed between the partitions 7 and the boss 11.

[0089] In this way, the liquid accumulation chamber b is formed by arranging the partition 7, which prevents the leaked functional liquid from flowing freely inside the bottom shell 1 and preventing the functional liquid from seeping out of the ink cartridge and contaminating the printing substrate. In addition, the arrangement of the partition 7 enhances the strength of the bottom shell 1.

[0090] Preferably, the connecting structure 6 is located outside the fluid collection cavity b.

[0091] Reference Figure 3 、 Figure 5 and Figure 6 The ink cartridge structure further includes a connecting tube 8 , which is fixed to the bottom shell 1 , and passes through the first connecting hole 1 a and the second connecting hole 2 a and is inserted into the ink bag 3 .

[0092] In this embodiment, the bottom shell 1, the boss 11 and the connecting pipe 8 are all integrally formed. In addition, the second clamping member 62 and the partition 7 are all integrally formed with the bottom shell 1 to facilitate manufacturing and processing.

[0093] The communication tube 8 passes through the mounting base 2 via the second communication hole 2 a and extends into the ink bag 3 .

[0094] This arrangement directly establishes a communication channel between the ink bag 3 and the chip through the connecting tube 8, which reduces the joints of the functional liquid flow channel, reduces the risk of functional liquid leakage, and makes the ink supply to the chip more stable.

[0095] In addition, in this embodiment, the connecting tube 8 is inserted into the installation groove 2b of the connecting sleeve 21. After the ink sac 3 is inserted into the installation groove 2b, the connecting tube 8 is also inserted into the ink sac 3, thereby reducing the risk of leakage of the functional liquid of the ink sac 3.

[0096] The connecting pipe 8 passes through the sealing ring 9 and extends into the connecting sleeve 21. When the functional liquid seeps along the outer wall of the connecting pipe 8, the sealing ring 9 restricts the functional liquid attached to the outer wall of the connecting pipe 8 from continuing to flow down.

[0097] The bottom surface of the protective shell 4 fits into the top surface of the mounting base 2 to achieve assembly of the protective shell 4 and the mounting base 2 .

[0098] Reference Figure 3-Figure 5 Specifically, a stop bar 22 is integrally formed at the top edge of the mounting base 2, and a flange 41 is formed at the bottom edge of the protective shell 4. The flange 41 of the protective shell 4 is tightly pressed against the bottom surface of the mounting base 2, and the circumferential side surface of the flange 41 is tightly pressed against the inner side surface of the stop bar 22.

[0099] Reference Figure 3 and Figure 4 In addition, the thickness of the stop bar 22 is greater than the thickness of the flange 41. When the protective shell 4 is pressed against the mounting seat 2, the protective shell 4 is fixed to the mounting seat 2 by applying sealant on the surface of the flange 41, thereby ensuring the sealing of the connection.

[0100] With this arrangement, the structure of the stop bar 22 and the flange 41 facilitates subsequent sealing of the connection between the protective shell 4 and the mounting base 2 .

[0101] An embodiment of the present application provides an ink cartridge structure for supplying functional liquid to a chip. The functional liquid in the ink sac 3 flows out by its own gravity. An external negative pressure device creates a negative pressure environment within the sealed chamber a, thereby offsetting the gravity of the functional liquid and causing the functional liquid to reach a critical state of outflow. After the functional liquid in the ink sac 3 is discharged by gravity, it passes through the second connecting hole 2a of the mounting seat 2 and the first connecting hole 1a of the bottom shell 1, and is then supplied to the liquid inlet of the chip. Therefore, this ink cartridge structure can achieve ink supply and ink supply control for the chip without the need for an additional ink supply system, saving space and cost, providing a foundation for miniaturization and desktop-based inkjet printing equipment, and further facilitating the promotion and application of inkjet printing technology.

[0102] In addition, the bottom shell 1, the mounting seat 2, the ink sac 3, and the protective shell 4 are arranged separately and assembled to form an ink cartridge structure, which is convenient for the various parts of the ink cartridge structure to be assembled after batch manufacturing, so as to save the cost of the ink cartridge structure and adapt to the consumer demand for batch production of the ink cartridge structure.

[0103] Finally, when the various components are assembled into the ink cartridge structure, the mounting base 2 is snap-fitted to the bottom shell 1, the ink sac 3 is mounted on the mounting base 2, and finally, the protective shell 4 is sheathed over the ink sac 3 and placed on top of the mounting base 2. The protective shell 4 and the mounting base 2 are then bonded together to complete the assembly of the ink cartridge structure. This simple assembly process offers high efficiency and low cost. Furthermore, the bottom shell 1, mounting base 2, ink sac 3, and protective shell 4 are all assembled in the same direction, making it easy to develop supporting assembly equipment. This supports mass production of ink cartridge structures and facilitates the widespread application of inkjet printing technology.

[0104] Another embodiment of the present application provides a piezoelectric nozzle, including the ink cartridge structure described above.

[0105] Another embodiment of the present application provides a piezoelectric nozzle. Since the piezoelectric nozzle includes the above-mentioned ink cartridge structure, the beneficial effects of the piezoelectric nozzle are consistent with the beneficial effects of the above-mentioned ink cartridge structure, which will not be repeated here.

[0106] Another embodiment of the present application provides an inkjet printing system, including the ink cartridge structure described above, and / or the piezoelectric nozzle described above.

[0107] Another embodiment of the present application provides an inkjet printing system. Since it includes the above-mentioned ink cartridge structure and / or the piezoelectric nozzle as described above, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned ink cartridge structure and piezoelectric nozzle, which will not be repeated here.

[0108] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0109] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0110] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An ink cartridge structure, characterized in that: It includes: A bottom shell, wherein the top of the bottom shell is open, a mounting structure for mounting a chip is provided on the bottom surface of the bottom shell, and a first communicating hole is provided through the bottom surface of the bottom shell, wherein the first communicating hole is used to communicate with the liquid inlet of the chip; A mounting seat, the mounting seat is inserted into the bottom shell, the mounting seat is fixedly connected to the bottom shell, and a second communicating hole is opened on the top surface of the mounting seat, and the first communicating hole is connected to the second communicating hole; an ink sac, the ink sac being mounted on the mounting seat, the liquid outlet of the ink sac being connected to the liquid inlet of the chip through the second communicating hole and the first communicating hole; a protective shell, wherein the bottom of the protective shell is opened, the protective shell cover is arranged on the mounting seat, the mounting seat blocks the opening of the protective shell to form a sealed cavity, and the ink sac is located in the sealed cavity; A ventilation structure is connected to the sealed cavity, and the sealed cavity is connected to an external negative pressure device through the ventilation structure.

2. The ink cartridge structure according to claim 1, characterized in that: The mounting base and the bottom shell are fixedly connected by a connecting structure; the connecting structure includes a first clamping member and a second clamping member, one of the first clamping member and the second clamping member is connected to the inner bottom surface of the bottom shell, and the other is connected to the bottom surface of the mounting base; The first clamping member includes a first clamping strip and at least one first clamping block, the first clamping block is connected to a side surface of the first clamping strip, and the first clamping block includes a first guiding inclined surface and a first limiting surface; The second clamping member includes a second clamping strip and at least one second clamping block, the second clamping block is connected to a side surface of the second clamping strip, and the second clamping block includes a second limiting surface; Among them, as the mounting seat is inserted into the bottom shell, the first guide bevel pushes the second clip block to make the first clip strip and the second clip strip move away from each other and deform until the first guide bevel is no longer in contact with the second clip block, and then the first clip strip and the second clip strip return to their positions, and the first limiting surface and the second limiting surface are pressed tightly in the insertion direction of the mounting seat.

3. The ink cartridge structure according to claim 2, characterized in that: When the first limiting surface and the second limiting surface are pressed against each other, the first clamping strip or the second clamping strip connected to the mounting seat is pressed against the inner bottom surface of the bottom shell.

4. The ink cartridge structure according to claim 1, characterized in that: The top surface of the mounting seat is provided with a mounting groove, and the second communicating hole is opened at the bottom of the mounting groove; The ink bag includes a bag body and a connecting head. The connecting head is inserted into the mounting groove and connected with the second connecting hole, so that the ink bag is plugged and matched with the mounting seat.

5. The ink cartridge structure according to claim 4, characterized in that: A limiting groove is arranged on the top surface of the mounting seat, and the capsule is suitable for being inserted into the limiting groove to limit the capsule.

6. The ink cartridge structure according to claim 4, characterized in that: A portion of the mounting seat is recessed to form the mounting groove, and a connecting sleeve is simultaneously formed. The connecting sleeve is pressed against the inner bottom surface of the bottom shell and is connected to the first communicating hole.

7. The ink cartridge structure according to claim 6, characterized in that: An upwardly convex boss is provided on the inner bottom surface of the bottom shell, the first communicating hole is opened on the boss and passes through the bottom shell, and the connecting sleeve is tightly pressed against the boss.

8. The ink cartridge structure according to claim 7, characterized in that: It also includes two partitions, both of which are connected to the inner bottom surface of the bottom shell, and the two partitions are respectively located on opposite sides of the boss, and the partitions are in contact with the opposite inner side surfaces of the bottom shell; Wherein, a liquid accumulation cavity is formed between the partition and the boss.

9. The ink cartridge structure according to any one of claims 1 to 8, characterized in that: The ink bag further includes a communicating pipe, which is fixed to the bottom shell, passes through the first communicating hole and the second communicating hole, and is inserted into the ink bag.

10. The ink cartridge structure according to claim 1, characterized in that: The ventilation structure comprises: a first vent hole, the first vent hole being opened through the edge of the bottom surface of the bottom shell; The second vent hole is formed through the mounting seat, the first vent hole is communicated with the second vent hole, and the second vent hole is communicated with the sealing cavity.

11. A piezoelectric nozzle, characterized in that: The invention comprises the ink cartridge structure according to any one of claims 1 to 10.

12. An inkjet printing system, characterized in that: Comprising the ink cartridge structure according to any one of claims 1 to 10, and / or the piezoelectric nozzle according to claim 11.

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