Spray head module with flexible printing density and ink-jet printing system

Abstract

The invention relates to a nozzle module with flexible printing density and an ink-jet printing system. The nozzle module comprises a base; the mounting seat is rotationally connected to the base; the spray head is mounted on the mounting seat, and the spraying direction of the spray head is consistent with the axis direction of the rotating shaft of the mounting seat; the adjusting assembly acts on the mounting base so as to drive the mounting base to rotate relative to the base, the adjusting assembly comprises a connecting piece, a pushing and jacking driving piece and a limiting piece, the connecting piece is connected with the mounting base, the pushing and jacking driving piece is mounted on the base, and the driving end of the pushing and jacking driving piece is suitable for pushing and jacking the connecting piece; and the limiting piece and the pushing driving piece clamp the connecting piece so as to limit the rotation of the mounting seat. The installation angle of the nozzle is precisely adjusted through rotation of the ejection driving piece installation base and the nozzle on the base, rotation of the installation base is limited through cooperation of the limiting piece and the ejection driving piece, the stability of the installation position of the nozzle is guaranteed, and therefore the installation angle of the nozzle is easily adjusted and kept, and the printing requirements of different printing densities are met.

Description

Technical Field

[0001] The present application relates to the field of inkjet printing technology, and in particular to a nozzle module with flexible printing density and an inkjet printing system. Background Art

[0002] Inkjet printing, a contactless, pressureless, and maskless technology for display device fabrication, 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, making it easy to create displays with extremely high resolution.

[0003] The nozzle is installed on the nozzle seat, and the substrate is loaded onto the carrier. By driving the relative movement of the nozzle and the carrier, the nozzle scans above the substrate, thereby realizing printing processing on the substrate.

[0004] Generally, the nozzle holes of the nozzle are arranged in a longitudinal direction perpendicular to the printing direction. As the nozzle moves relative to the substrate in the printing direction, Figure 6 The spacing between the multiple droplets generated by the multiple nozzles of the nozzle head 3 each time is consistent with the spacing between adjacent nozzles of the nozzle head 3, that is, the nozzle spacing of the nozzle head 3 limits the printing density.

[0005] The general method to adjust the print density of the nozzle is to install the nozzle so that the length direction of the nozzle holes is tilted at an acute angle to the printing direction. Figure 7 In the printing direction, the spacing between the orthographic projections of the plurality of nozzle holes of the tilted installed nozzle head 3 becomes smaller, thereby achieving the adjustment of the printing density of the nozzle head 3.

[0006] In the related art, a printhead is selected according to the required printing resolution, and a printhead holder is designed according to whether the printhead needs to be installed at an angle, and a corresponding mounting structure is arranged on the printhead holder to meet the printing requirements.

[0007] However, in the laboratory, trial printing with different printing densities is often required to test the printing effect. If a nozzle holder with a customized installation angle is used for nozzle installation, more nozzle holders need to be prepared, and it is also difficult to adjust the nozzle at a small angle. Therefore, it is difficult to adjust the installation angle of the nozzle with high precision, which makes it difficult to meet the printing needs of experimental printing. Summary of the Invention

[0008] The embodiments of the present application provide a nozzle module and an inkjet printing system with flexible printing density to solve the technical problem in the related art that it is difficult to adjust the installation angle of the nozzle and it is difficult to meet the printing requirements of experimental printing.

[0009] In a first aspect, a nozzle module with flexible printing density is provided, comprising:

[0010] base;

[0011] a mounting seat, the mounting seat being rotatably connected to the base;

[0012] a nozzle, the nozzle being mounted on the mounting base, the nozzle surface being exposed, and the nozzle direction being consistent with the axis direction of the rotation shaft of the mounting base;

[0013] An adjustment component acts on the mounting seat to drive the mounting seat to rotate relative to the base, and the adjustment component includes a connecting member, a pushing drive member and a limiting member. The connecting member is connected to the mounting seat, the pushing drive member is installed on the base, and the driving end of the pushing drive member is suitable for pushing the connecting member to drive the mounting seat to rotate; the limiting member applies a blocking force to the connecting member, and the directions of the forces applied to the connecting member by the limiting member and the pushing drive member are opposite, and the limiting member and the pushing drive member clamp the connecting member to limit the rotation of the mounting seat.

[0014] In some embodiments, the adjustment assembly further includes an elastic member, both ends of which are connected to the mounting seat and the base respectively, and the elastic force of the elastic member causes the connecting member to continuously press against the driving end of the ejection driving member.

[0015] In some embodiments, a plurality of mounting structures are arranged on the mounting seat, each of the mounting structures being used to connect the connector to the mounting seat; the plurality of mounting structures are distributed circumferentially with the rotation axis of the mounting seat as the central axis;

[0016] When the connecting member is connected to the mounting base through different mounting structures, the angle between the length direction of the nozzle holes of the nozzle on the mounting base and the printing direction is close to 0 degrees, 30 degrees, 45 degrees, 60 degrees and 90 degrees.

[0017] In some embodiments, the print head module with flexible printing density further includes an indicator structure for displaying a rotation angle of the mounting seat relative to the base; the indicator structure includes:

[0018] a vernier scale, the vernier scale being provided on the mounting seat and indicating the rotation angle of the mounting seat,

[0019] a main scale scale, the main scale scale being provided on the base, the vernier scale and the main scale scale together indicating the rotation angle of the mounting seat;

[0020] The angle indicated by each grid of the vernier scale is smaller than the angle indicated by each grid of the main scale.

[0021] In some embodiments, the print head module with flexible printing density further includes a fixing assembly, wherein the print head is mounted to the mounting base via the fixing assembly, wherein the fixing assembly enables a center line of the print head to be collinear with a rotation axis of the mounting base; the fixing assembly includes:

[0022] The nozzle is passed through the mounting plate and fixed to the mounting plate. The mounting seat is provided with a penetrating mounting groove. The nozzle is passed through the mounting seat through the mounting groove, and the mounting plate is supported by the mounting seat.

[0023] In some embodiments, the fixing assembly further includes a first positioning assembly, which is fixed to the mounting seat and is suitable for pressing against one end of the nozzle in the length direction to position the nozzle along the length.

[0024] In some embodiments, the fixing assembly further includes a second positioning assembly, the second positioning assembly being used to push the side of the nozzle to adjust the length direction of the nozzle; the second positioning assembly includes:

[0025] an operating rod, the operating rod being rotatably connected to the mounting seat;

[0026] a cam connected to the operating rod and rotating with the operating rod, wherein a circumferential side surface of the cam abuts against a side surface of the nozzle;

[0027] The cam is rotated to push the nozzle, so as to adjust the length direction of the nozzle.

[0028] In some embodiments, the second positioning assembly is provided in multiple groups, and two opposite side surfaces of the nozzle are pushed up by the second positioning assembly, and the second positioning assemblies located on two opposite side surfaces of the nozzle are suitable for clamping the nozzle.

[0029] In some embodiments, the fixing assembly further includes a plurality of sets of third positioning assemblies, each of which is provided at the corners of the mounting plate, and the mounting plate is fixed to the mounting seat via the third positioning assemblies. The third positioning assemblies are used to adjust the plane of the spraying surface of the nozzle, and the third positioning assemblies include:

[0030] a first bolt, the first bolt passing through the mounting plate and being threadedly connected to the mounting seat, with the head of the first bolt tightly pressed against the surface of the mounting plate;

[0031] A second bolt, wherein the second bolt is threadedly passed through the mounting plate and pressed against the mounting seat.

[0032] The beneficial effects of the technical solution provided by this application include:

[0033] The present invention provides a nozzle module with flexible print density. Because the mounting base is rotatably arranged on the base, the angle between the nozzle arrangement direction and the printing direction can be changed by rotating the mounting base. This allows the print density to be varied while maintaining consistent nozzle spacing, enabling a variety of printing processes with different print densities and meeting the needs of various trial prints during the experimental printing phase. Because the nozzle spacing of the nozzle head is small, when the nozzle length direction of the nozzle head needs to be adjusted to adjust the print density, the mounting base can be rotated by pushing the connecting member using the push-pull drive member. This allows the mounting base to be fine-tuned in terms of rotation angle, ensuring that the nozzle is positioned at a specific angle and achieving high-precision adjustment of the print density. After the nozzle position is adjusted, the limiting member and the push-pull drive member cooperate to clamp the connecting member, thereby limiting the rotation of the mounting base and ensuring that the position of the nozzle relative to the base remains unchanged. During subsequent printing, the nozzle is less likely to shift, ensuring that the desired print density is achieved. Thus, high-precision adjustment of the nozzle length direction is achieved, allowing for flexible and convenient adjustment of the nozzle print density, thereby adapting to various printing needs and meeting the needs of experimental printing.

[0034] In a second aspect, an inkjet printing system is provided, comprising the print head module with flexible printing density as described above.

[0035] Another embodiment of the present application provides an inkjet printing system. Since the inkjet printing system includes the above-mentioned nozzle module with flexible printing density, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned nozzle module with flexible printing density, and 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 a nozzle module with flexible printing density provided in an embodiment of the present application;

[0038] Figure 2 Schematic diagram of the mounting base, fixing assembly and nozzle provided in the embodiment of the present application;

[0039] Figure 3 A schematic diagram of another perspective of the mounting base, fixing assembly, and nozzle provided in an embodiment of the present application;

[0040] Figure 4 A partial exploded view of the nozzle and mounting base provided in an embodiment of the present application;

[0041] Figure 5 A longitudinal cross-sectional view of the nozzle and fixing assembly provided in an embodiment of the present application;

[0042] Figure 6 This is a schematic diagram showing that the nozzle orifice arrangement length direction is perpendicular to the printing direction;

[0043] Figure 7 This is a schematic diagram showing that the angle between the nozzle orifice arrangement length direction and the printing direction is acute.

[0044] In the figure: 1. Base; 2. Mounting seat; 2a. Mounting structure; 2b. Mounting slot; 3. Nozzle; 3a. Matching slot; 4. Adjustment assembly; 41. Connecting piece; 42. Push-up drive piece; 43. Limiting piece; 44. Elastic piece; 5. Indication structure; 51. Vernier scale; 52. Main scale; 6. Fixing assembly; 61. Mounting plate; 61a. Positioning hole; 62. First positioning assembly; 63. Second positioning assembly; 631. Operating lever; 632. Cam; 64. Third positioning assembly; 641. First bolt; 642. Second bolt. 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 present invention provides a nozzle module and inkjet printing system with flexible print density. The system utilizes a push-pull drive mounting base and a nozzle to rotate on a base to precisely adjust the nozzle's installation angle. The system also uses a stopper and a push-pull drive to limit the rotation of the mounting base, ensuring the stability of the nozzle's installation position. This makes it easy to adjust and maintain the nozzle's installation angle, meeting the requirements of different print densities. This application addresses the technical problem in related art of difficulty in adjusting the nozzle's installation angle, making it difficult to meet the requirements of experimental printing.

[0047] Reference Figure 1 and Figure 2 A printhead module with flexible printing density includes a base 1, a mounting base 2, a printhead 3, and an adjustment assembly 4. The mounting base 2 is rotatably mounted on the base 1, and the printhead 3 is mounted on the mounting base 2 and rotates with the mounting base 2 on the base 1. The spraying direction of the printhead 3 is consistent with the axial direction of the rotation axis of the printhead 3. After the printhead 3 is installed, the spraying surface of the printhead 3 is exposed to ensure that the printhead 3 can spray normally. The adjustment assembly 4 is used to drive the mounting base 2 to rotate with high precision and maintain the position of the mounting base 2 relative to the base 1.

[0048] In this arrangement, since the mounting seat 2 is rotatably arranged on the base 1, the angle between the nozzle arrangement direction of the nozzle head 3 and the printing direction can be changed by rotating the mounting seat 2. Under the premise that the nozzle spacing of the nozzle head 3 is consistent, the printing density can be changed to achieve a variety of printing processes with different printing densities, thereby meeting the needs of various trial printings in the experimental printing stage.

[0049] After the printhead module is installed in the inkjet printing system, the base 1 moves relative to the substrate support platform in the printing direction and perpendicular to the printing direction. Furthermore, after the printhead 3 is attached to the base 1, the longitudinal direction of the nozzle arrangement of the printhead 3 is aligned with the printing direction, and the centerline of the printhead 3 is collinear with the rotation axis of the mounting base 2. By rotating the mounting base 2 and the printhead 3 relative to the base 1, the installation angle of the printhead 3 can be adjusted to adjust the printing density, thereby adapting to printing jobs with different print density requirements.

[0050] Reference Figure 1 and Figure 2 The adjustment component 4 is used to drive the mounting seat 2 to rotate relative to the base 1 and keep the adjusted position of the mounting seat 2 unchanged, so as to adjust the installation angle of the nozzle 3 and ensure that the position of the adjusted nozzle 3 does not change, that is, after the nozzle 3 is adjusted, the angle between the length direction of the nozzle hole arrangement of the nozzle 3 and the printing direction remains unchanged.

[0051] Reference Figure 1 and Figure 2 Specifically, the adjustment assembly 4 includes a push-up driving member 42 , a connecting member 41 and a limiting member 43 .

[0052] The connecting member 41 is fixed to the mounting base 2 , and the pushing driving member 42 is installed on the base 1 , and the driving end of the pushing driving member pushes the connecting member 41 , thereby driving the mounting base 2 to rotate by driving the connecting member 41 to move.

[0053] Preferably, the position where the connecting member 41 is connected to the mounting seat 2 is away from the rotation center of the mounting seat 2 , and the pushing driving member 42 pushes the end of the connecting member 41 away from the mounting seat 2 .

[0054] With this arrangement, when the push-up driving member 42 pushes the connecting member 41 to rotate the mounting base 2, the mounting base 2 is less likely to rotate at a large angle, thereby making it easier to rotate the mounting base 2 with high precision, thereby achieving high-precision adjustment of the installation angle of the nozzle 3.

[0055] Specifically, the ejector drive member 42 includes a differential head.

[0056] Specifically, the connecting member 41 includes a rod-shaped, block-shaped or plate-shaped member.

[0057] Reference Figure 1 and Figure 2The limiting member 43 is used to apply a blocking force to the connecting member 41, and the directions of the forces applied by the limiting member 43 and the pushing driving member to the connecting member 41 are opposite. The limiting member 43 and the pushing driving member 42 clamp the connecting member 41 to limit the rotation of the mounting base 2.

[0058] Reference Figure 1 and Figure 2 Specifically, when adjusting the installation angle of the mounting seat 2, the limiting member 43 retreats to leave movement space for the pushing driving member 42 to drive the connecting member 41. When the position adjustment of the mounting seat 2 is completed, the limiting member 43 is used to press the connecting member 41 tightly, so that the connecting member 41 is clamped by the pushing driving member 42 and the limiting member 43.

[0059] This arrangement prevents the clamped connector 41 from moving relative to the base 1, thereby ensuring that the relative position of the connector 41 and the base 1 remains unchanged. This ensures that the angle between the longitudinal direction of the nozzle arrangement of the nozzle head 3 and the printing direction remains unchanged, thereby achieving stable printing at different print densities.

[0060] The limiting member 43 includes a micrometer head or a bolt.

[0061] Reference Figure 1 and Figure 2 Preferably, when the rotation angle of the mounting base 2 exceeds the preset rotation angle, the limiting member 43 is used to push the connecting member 41 in the opposite direction, and then the pushing driving member 42 is used to press against the connecting member 41 to clamp the connecting member 41. In this way, the installation angle of the nozzle 3 can be adjusted and maintained.

[0062] Reference Figure 1 and Figure 2 Furthermore, the adjustment component 4 also includes an elastic member 44, the two ends of which are respectively connected to the mounting seat 2 and the base 1. The elastic force of the elastic member 44 causes the connecting member 41 to continuously press against the driving end of the push-up driving member 42.

[0063] With this arrangement, the elastic force of the elastic member 44 keeps the connecting member 41 in constant contact with the driving end of the ejection driver 42. Therefore, the ejection motion of the driving end of the ejection driver 42 is directly fed back to the connecting member 41, without any motion loss. Furthermore, the elastic force of the elastic member 44 increases the damping of the ejection driver 42 pushing against the connecting member 41, facilitating a smaller displacement of the connecting member 41. This improves the precision of the movement of the connecting member 41 and the rotation of the mounting base 2, facilitating more precise adjustment of the installation angle of the nozzle 3.

[0064] In this embodiment, the elastic member 44 includes a spring.

[0065] Reference Figure 1 and Figure 2Furthermore, the print head module with flexible printing density also includes an indicator structure 5, which is used to display the rotation angle of the mounting base 2 relative to the base 1. This allows visual determination of the angle between the length direction of the nozzle arrangement of the nozzle head 3 and the printing direction.

[0066] Reference Figure 1 and Figure 2 The indicator structure 5 includes a vernier scale 51 and a main scale 52. The vernier scale 51 is provided on the mounting base 2 and indicates the rotation angle of the mounting base 2. The main scale 52 is provided on the base 1 and together with the vernier scale 51, 52 indicate the rotation angle of the mounting base 2. The angle indicated by each division of the vernier scale 51 is smaller than the angle indicated by each division of the main scale 52.

[0067] In this arrangement, by coordinating the readings of the vernier scale 51 and the main scale 52 and adopting the principle of a vernier caliper, high-precision readings are achieved, thereby enabling high-precision monitoring of the installation angle of the nozzle 3 .

[0068] In this embodiment, each division of the vernier scale 51 indicates an angle of 0.9 degrees, and each division of the main scale 52 indicates an angle of 1 degree, achieving an angle monitoring accuracy of 0.1 degrees.

[0069] In this embodiment, the ejection driving member 42 realizes the installation angle adjustment of the nozzle 3 within a first range. The first range is a small range. Specifically, the first range includes ±15 degrees.

[0070] It should be understood that after the nozzle 3 is mounted on the mounting base 2, the relative position of the nozzle 3 and the mounting base 2 remains unchanged. The nozzle 3 can be adjusted at a small angle by adjusting the component 4.

[0071] Generally, after the nozzle 3 is installed on the mounting base 2, the adjustment component 4 drives the mounting base 2 to rotate, and adjusts the angle between the nozzle arrangement length direction of the nozzle 3 and the printing direction within a first range, that is, the angle between the nozzle arrangement length direction of the nozzle 3 and the printing direction varies within ±15 degrees.

[0072] By setting the rotation angle of the mounting base 2 driven by the adjustment component 4, the printing accuracy is ensured, and the size of the connecting member 41 is set within a reasonable range, which is more practical.

[0073] Reference Figure 1 and Figure 2 The mounting base 2 is provided with a plurality of mounting structures 2a, each of which is used to connect a connector 41 to the mounting base 2. The plurality of mounting structures 2a are distributed circumferentially around the rotation axis of the mounting base 2. When the connector 41 is connected to the mounting base 2 via different mounting structures 2a, the longitudinal direction of the nozzle arrangement of the nozzle head 3 on the mounting base 2 forms an angle close to 0 degrees, 30 degrees, 45 degrees, 60 degrees, and 90 degrees with the printing direction.

[0074] By changing the relative position of the connecting member 41 and the mounting base 2, the initial angle between the arrangement length direction of the nozzle holes of the nozzle head 3 and the printing direction is changed, so that the angle between the arrangement length direction of the nozzle holes of the nozzle head 3 and the printing direction can be adjusted to around 30 degrees, 45 degrees, 60 degrees and 90 degrees.

[0075] This arrangement increases the adjustment range of the installation angle of the nozzle 3 and facilitates faster and more accurate adjustment of the installation angle of the nozzle 3 to a specified angle.

[0076] In this embodiment, the mounting structure 2 a includes a threaded hole, and the connecting member 41 is connected to the mounting base 2 by means of a bolt and threaded engagement in the threaded hole.

[0077] Reference Figure 3-Figure 5 The print head module with flexible printing density further includes a fixing assembly 6, through which the print head 3 is mounted to the mounting base 2. The fixing assembly 6 is used to fix the print head 3 on the mounting base 2. In addition, the fixing assembly 6 positions the print head 3 to determine the length direction of the nozzle holes of the print head 3 after the print head 3 is installed, and to ensure that the center line of the print head 3 is collinear with the rotation axis of the mounting base 2.

[0078] Reference Figure 3-Figure 5 In this embodiment, after the nozzle 3 is installed, the position of the nozzle 3 relative to the mounting base 2 is determined, and the installation angle of the nozzle 3 can be adjusted by changing the position of the mounting base 2.

[0079] Reference Figure 3-Figure 5 The fixing assembly 6 includes a mounting plate 61, and the nozzle 3 is inserted through and fixed to the mounting plate 61. The mounting base 2 is provided with a through-mounting slot 2b, and the nozzle 3 is inserted through the mounting base 2 through the mounting slot 2b. The mounting plate 61 is supported by the mounting base 2, and the mounting plate 61 is connected to the mounting base 2, thereby achieving the fixing of the nozzle 3 to the mounting base 2.

[0080] With this arrangement, the ejection surface of the nozzle head 3 penetrates the mounting slot 2b, unobstructed. Furthermore, the ejection surface of the nozzle head 3 is lower than the mounting base 2 and the base 1. Therefore, neither the base 1 nor the mounting base 2 interferes with the nozzle head 3's ability to maximize contact with the substrate, ensuring flexibility in adjusting the printing height.

[0081] Specifically, in this embodiment, the base 1 is provided with a through rotation groove, and the mounting seat 2 is rotatably mounted in the rotation groove.

[0082] Reference Figure 3-Figure 5 , wherein the fixing component 6 also includes a first positioning component 62, the first positioning component 62 is fixed to the mounting base 2, and the first positioning component 62 is suitable for pressing against one end of the nozzle 3 in the length direction to position the position of the nozzle 3 along the length.

[0083] Reference Figure 3-Figure 5 Specifically, the first positioning component 62 includes a tightening block, and the first positioning component 62 is fixed to the bottom surface of the mounting seat 2. After the nozzle 3 is inserted into the mounting groove 2b, one end face of the nozzle 3 is tightened against the first positioning component 62 to achieve the positioning of the nozzle 3 in its length direction.

[0084] Reference Figure 3-Figure 5 Preferably, a mating groove 3a is provided on one end face in the length direction of the nozzle 3, and the mating groove 3a is a V-shaped groove. The clamping block is pressed against the two groove walls of the mating groove 3a, thereby limiting the relative movement between the clamping block and the nozzle 3.

[0085] Reference Figure 3-Figure 5 The fixing assembly 6 further includes a second positioning assembly 63, which is used to push the side of the nozzle 3 to adjust the length direction of the nozzle 3. In this embodiment, the nozzle holes of the nozzle 3 are arranged in the same length direction as the nozzle 3.

[0086] The first positioning assembly 62 and the second positioning assembly 63 can be used to determine the specific position of the nozzle 3 installed on the mounting base 2, ensuring consistency each time the nozzle 3 is installed on the mounting base 2. By positioning the nozzle 3 in its longitudinal direction and its position along the longitudinal direction using the first positioning assembly 62 and the second positioning assembly 63, the nozzle 3 can be adjusted to a predetermined position on the mounting base 2, at which point the centerline of the nozzle 3 is collinear with the rotation axis of the mounting base 2.

[0087] With this arrangement, when the mounting base 2 is rotated, the nozzle head 3 can be driven to rotate, and the nozzle head 3 rotates with its center line as the rotation axis. Therefore, the rotation angle of the nozzle head 3 is consistent with that of the mounting base, which makes it easy to accurately control the rotation angle of the nozzle head 3, thereby adjusting the installation angle of the nozzle head 3 with high precision.

[0088] Reference Figure 3-Figure 5 The second positioning assembly 63 includes an operating rod 631 and a cam 632. The operating rod 631 is rotatably connected to the mounting base 2. The cam 632 is connected to the operating rod 631 and rotates with the operating rod 631. The circumferential side of the cam 632 abuts the side of the spray head 3. By rotating the operating rod 631, the cam 632 rotates, and the cam 632 pushes the spray head 3 to adjust the length of the spray head 3.

[0089] Reference Figure 3-Figure 5 Preferably, the operating rod 631 is threadedly connected to the mounting base 2. When the operating rod 631 stops rotating, the operating rod 631 is self-locked due to the threaded connection with the mounting base 2 and is not easy to rotate at will, thereby maintaining the cam 632 and the nozzle 3 in a tight state, preventing the cam 632 and the nozzle 3 from shifting together, and maintaining the arrangement of the nozzle holes of the nozzle 3 in the length direction.

[0090] In this way, the length direction of the nozzle 3 is adjusted by pushing the cam 632 to ensure that the nozzle 3 is installed at a certain position on the corresponding mounting seat 2, the position of the nozzle 3 relative to the mounting seat 2 is determined, and the center line of the nozzle 3 is consistent with the axis.

[0091] Preferably, the pitch of the thread on the surface of the operating rod 631 is small, and when the operating rod 631 rotates, the operating rod 631 is slightly displaced relative to the mounting seat 2.

[0092] Specifically, in this embodiment, the operating rod 631 is passed through the mounting base 2 and is threadedly connected to the mounting base 2 , one end of the operating rod 631 extends below the mounting base 2 , and the cam 632 is connected to the bottom end of the operating rod 631 .

[0093] Reference Figure 3-Figure 5 In this embodiment, the mounting plate 61 is provided with a positioning hole 61a for the operating rod 631 to pass through. The diameter of the positioning hole 61a is larger than the diameter of the operating rod 631. When the operating rod 631 is rotated so that the cam 632 pushes the spray head 3, the mounting plate 61 is displaced relative to the operating rod 631.

[0094] With this arrangement, the positioning hole 61a is arranged to preliminarily position the position of the mounting plate 61 through the operating rod 631, so as to preliminarily position the length direction of the nozzle 3, so that the position deviation of the nozzle 3 is within the adjustment range of the cam 632, which facilitates the cam 632 to push the nozzle 3 and adjust the length direction of the nozzle 3.

[0095] Reference Figure 3-Figure 5 Furthermore, the second positioning components 63 are provided with multiple groups, and the two opposite side surfaces of the nozzle 3 are pushed up by the second positioning components 63, and the second positioning components 63 on the two opposite side surfaces of the nozzle 3 are suitable for clamping the nozzle 3.

[0096] In this arrangement, the nozzle head 3 is clamped by multiple sets of second positioning components 63, thereby maintaining the position of the nozzle head 3 relative to the mounting base 2, thereby preventing the position of the nozzle head 3 from changing during the further fixing process of the nozzle head 3.

[0097] Reference Figure 3-Figure 5 Furthermore, the fixing assembly 6 further includes a plurality of sets of third positioning assemblies 64, which are respectively provided at the corners of the mounting plate 61, and the mounting plate 61 is fixed to the mounting base 2 via the third positioning assemblies 64. The third positioning assemblies 64 are used to adjust the plane of the spraying surface of the nozzle 3.

[0098] In this embodiment, the mounting plate 61 is fixed to the mounting base 2 by the third positioning assembly 64, and the horizontality of the ejection surface of the nozzle 3 on the mounting plate 61 is adjusted. This ensures that the ejection surface of the nozzle 3 is in a horizontal state, thereby ensuring that the printing height of the multiple nozzles of the nozzle 3 is consistent, thereby ensuring printing quality.

[0099] Reference Figure 3-Figure 5 The third positioning assembly 64 includes a first bolt 641 and a second bolt 642. The first bolt 641 is threaded through the mounting plate 61 and is threadedly connected to the mounting seat 2, with the head of the first bolt 641 tightly against the surface of the mounting plate 61. The second bolt 642 is threaded through the mounting plate 61 and is tightly against the mounting seat 2.

[0100] With this arrangement, by screwing the first bolt 641 and the second bolt 642, the mounting plate 61 and the mounting seat 2 are fixed in a push-pull manner, which not only achieves the fixation of the mounting plate 61 and the mounting seat 2, but also can change the height of the third positioning component 64 of the mounting plate 61 relative to the mounting seat 2 by adjusting the positions of the first bolt 641 and the second bolt 642, thereby adjusting the spraying surface of the nozzle 3 to be horizontal.

[0101] It should be noted that there is a gap between the first bolt 641 and the wall of the through hole on the mounting plate 61 through which the first bolt 641 passes. In this way, when the nozzle 3 is adjusted in the longitudinal direction, the first bolt 641 will not restrict the displacement of the mounting plate 61.

[0102] The installation and adjustment process of the nozzle 3 in this embodiment is as follows:

[0103] First, use the fixing assembly 6 to secure the printhead 3 to the mounting base 2 and position the printhead 3 relative to the mounting base 2. This determines the lengthwise direction of the nozzle holes of the printhead 3. Then, based on the desired print density, rotate the mounting base 2 to adjust the installation angle of the printhead 3, ensuring that the nozzle lengthwise direction of the printhead 3 forms a predetermined angle with the printing direction, completing the pre-printing preparations.

[0104] The embodiment of the present application provides a nozzle module with flexible printing density. Since the mounting seat 2 is rotatably arranged on the base 1, the angle between the nozzle arrangement direction of the nozzle 3 and the printing direction can be changed by rotating the mounting seat 2. Therefore, the printing density can be changed under the premise that the nozzle spacing of the nozzle 3 is consistent, and a variety of printing processes with different printing densities can be realized, meeting the needs of various trial printings in the experimental printing stage. Because the nozzle spacing of the nozzle 3 is small, when the nozzle arrangement length direction of the nozzle 3 needs to be changed to adjust the printing density, the push-up drive member 42 is used to push the connecting member 41 to drive the mounting seat 2 to rotate, and the rotation angle of the mounting seat 2 can be fine-tuned to ensure that the nozzle 3 is selected at a specific angle, thereby achieving high-precision adjustment of the printing density. After the position of the nozzle 3 is adjusted, the limit member 43 and the push-up drive member 42 cooperate to clamp the connecting member 41, thereby limiting the rotation of the mounting seat 2 and ensuring that the position of the nozzle 3 relative to the base 1 remains unchanged. During subsequent printing, the nozzle 3 is not easily displaced, ensuring that processing is carried out at the required printing density. Therefore, high-precision adjustment of the length direction of the nozzle 3 is achieved, and the printing density of the nozzle 3 can be adjusted flexibly and conveniently, thereby adapting to various printing requirements and meeting the needs of experimental printing.

[0105] Another embodiment of the present application provides an inkjet printing system, including the nozzle module with flexible printing density as described above.

[0106] Another embodiment of the present application provides an inkjet printing system. Since the inkjet printing system includes the above-mentioned nozzle module with flexible printing density, the beneficial effects of the inkjet printing system are consistent with the beneficial effects of the above-mentioned nozzle module with flexible printing density, and will not be repeated here.

[0107] 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.

[0108] 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.

[0109] 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. A nozzle module with flexible printing density, characterized in that: It includes: base; a mounting seat, the mounting seat being rotatably connected to the base; a nozzle, the nozzle being mounted on the mounting base, the nozzle surface being exposed, and the nozzle direction being consistent with the axis direction of the rotation shaft of the mounting base; an adjustment assembly, the adjustment assembly acting on the mounting seat to drive the mounting seat to rotate relative to the base, the adjustment assembly comprising a connecting member, a pushing drive member, and a limiting member, the connecting member being connected to the mounting seat, the pushing drive member being mounted on the base, and the driving end of the pushing drive member being adapted to push the connecting member to drive the mounting seat to rotate; The limiting member applies a blocking force to the connecting member, and the forces applied to the connecting member by the limiting member and the pushing driving member are in opposite directions. The limiting member and the pushing driving member clamp the connecting member to limit the rotation of the mounting seat.

2. The print head module with flexible printing density according to claim 1, characterized in that: The adjustment assembly further comprises an elastic member, both ends of which are connected to the mounting seat and the base respectively, and the elastic force of the elastic member causes the connecting member to continuously press against the driving end of the ejection driving member.

3. The print head module with flexible printing density according to claim 1, characterized in that: The mounting seat is provided with a plurality of mounting structures, each of which is used to connect the connector to the mounting seat; the plurality of mounting structures are distributed around the circumference of the mounting seat with the rotation axis as the central axis; When the connecting member is connected to the mounting base through different mounting structures, the angle between the length direction of the nozzle holes of the nozzle on the mounting base and the printing direction is close to 0 degrees, 30 degrees, 45 degrees, 60 degrees and 90 degrees.

4. The print head module with flexible printing density according to any one of claims 1 to 3, characterized in that: The device further includes an indicator structure for displaying a rotation angle of the mounting seat relative to the base; the indicator structure includes: a vernier scale, the vernier scale being provided on the mounting seat and indicating the rotation angle of the mounting seat, a main scale scale, the main scale scale being provided on the base, the vernier scale and the main scale scale together indicating the rotation angle of the mounting seat; The angle indicated by each grid of the vernier scale is smaller than the angle indicated by each grid of the main scale.

5. The print head module with flexible printing density according to claim 1, characterized in that: The apparatus further comprises a fixing assembly, through which the nozzle is mounted to the mounting base, wherein the fixing assembly causes the center line of the nozzle to be collinear with the rotation axis of the mounting base; the fixing assembly comprises: The nozzle is passed through the mounting plate and fixed to the mounting plate. The mounting seat is provided with a penetrating mounting groove. The nozzle is passed through the mounting seat through the mounting groove, and the mounting plate is supported by the mounting seat.

6. The print head module with flexible printing density according to claim 5, characterized in that: The fixing assembly further includes a first positioning assembly, which is fixed to the mounting seat and is suitable for pressing against one end of the nozzle in the length direction to position the nozzle along the length.

7. The print head module with flexible printing density according to claim 6, characterized in that: The fixing assembly further includes a second positioning assembly, which is used to push the side of the nozzle to adjust the length direction of the nozzle; the second positioning assembly includes: an operating rod, the operating rod being rotatably connected to the mounting seat; a cam connected to the operating rod and rotating with the operating rod, wherein a circumferential side surface of the cam abuts against a side surface of the nozzle; The cam is rotated to push the nozzle, so as to adjust the length direction of the nozzle.

8. The print head module with flexible printing density according to claim 7, characterized in that: The second positioning components are provided in multiple groups, and the two opposite side surfaces of the nozzle are pushed up by the second positioning components. The second positioning components located on the two opposite side surfaces of the nozzle are suitable for clamping the nozzle.

9. The print head module with flexible printing density according to claim 5, characterized in that: The fixing assembly further includes a plurality of third positioning assemblies, each of which is provided at the corners of the mounting plate. The mounting plate is fixed to the mounting seat via the third positioning assemblies. The third positioning assemblies are used to adjust the plane of the spraying surface of the nozzle. The third positioning assemblies include: a first bolt, the first bolt passing through the mounting plate and being threadedly connected to the mounting seat, with the head of the first bolt tightly pressed against the surface of the mounting plate; A second bolt, wherein the second bolt is threadedly passed through the mounting plate and pressed against the mounting seat.

10. An inkjet printing system, characterized in that: The invention comprises a nozzle module with flexible printing density as described in any one of claims 1 to 9.

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