Piezoelectric nozzle module with position precision adjustment function and printing device

Abstract

The invention relates to the technical field of printing equipment, and aims to solve the technical problem that the printing effect is affected. In order to solve the technical problem, the invention provides the piezoelectric spray head module with the position precision adjustment function and the printing device. The present invention comprises: an adjustment base extending in an X direction; the adjusting base comprises a first flexible hinge of an annular structure and a second flexible hinge of an annular structure, the second flexible hinge is sleeved with the first flexible hinge, and a movable gap is formed between the second flexible hinge and the first flexible hinge; the first flexible hinge is movably connected with the second flexible hinge; the spray head assembly extends in the X direction; the nozzle assembly is connected in the second flexible hinge; the adjusting part is connected with the first flexible hinge and the second flexible hinge; the adjusting part is used for adjusting the position of the spray head assembly in the Y direction and adjusting the inclination angle of the spray head assembly, and the Y direction intersects with the X direction. The printing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a piezoelectric nozzle module and a printing device with a precise position adjustment function. Background Art

[0002] See also Figure 6 As shown, the printhead assembly forms a certain angle with the paper's travel direction V, with the optimal angle being 90 degrees (i.e., the printhead assembly is perpendicular to the paper's travel direction V). However, due to long-term use or installation problems, the printhead assembly may not be perpendicular to the paper's travel direction V, resulting in a skewed printed pattern. For example, a square may be printed but a skewed quadrilateral may be printed, affecting printing quality and accuracy. Furthermore, if multiple printheads are used side by side, each with an uncertain angular tilt error, this can lead to distortion and misalignment of the printed pattern.

[0003] Therefore, it is necessary to design a piezoelectric nozzle module that can adjust the V angle between the nozzle assembly and the travel direction, as well as correct the position of the nozzle assembly. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a piezoelectric nozzle module with a precise position adjustment function, comprising: The adjustment base extends in the X direction; the adjustment base includes a first flexible hinge of an annular structure and a second flexible hinge of an annular structure, the second flexible hinge is sleeved in the first flexible hinge, and a movable gap is formed between the second flexible hinge and the first flexible hinge; the first flexible hinge and the second flexible hinge are movably connected; A nozzle assembly extends in the X direction; the nozzle assembly is connected to the second flexible hinge; An adjusting portion connects the first flexible hinge and the second flexible hinge; the adjusting portion is used to drive the second flexible hinge to move in the first flexible hinge to adjust the position of the nozzle assembly in the Y direction, where the Y direction intersects with the X direction; the adjusting portion is used to drive the second flexible hinge to rotate to adjust the inclination angle of the nozzle assembly.

[0006] In one embodiment of the present invention, in the X direction, at least one side of the first flexible hinge is movably connected to the second flexible hinge through a first hinge structure; in the Y direction, at least one side of the first flexible hinge is movably connected to the second flexible hinge through a second hinge structure; under the action of the adjustment part, the first hinge structure and the second hinge structure are deformed to adjust the inclination angle of the nozzle assembly.

[0007] In one embodiment of the present invention, in the X direction, both sides of the first flexible hinge are movably connected to the second flexible hinge through the first hinge structure; the two first hinge structures are symmetrically arranged in the X direction; In the Y direction, both sides of the first flexible hinge are movably connected to the second flexible hinge through the second hinge structure; the two second hinge structures are symmetrically arranged in the Y direction.

[0008] In one embodiment of the present invention, in the Y direction, first flexible grooves are symmetrically provided on both sides of the first hinge structure, the first flexible grooves are square, and the first flexible grooves are connected to the movable gap; In the X direction, second flexible grooves are symmetrically provided on both sides of the second hinge structure. The second flexible grooves are arc-shaped and communicate with the movable gap.

[0009] In one embodiment of the present invention, the adjusting portion includes two pressure-applying portions; the two pressure-applying portions are arranged on the same side of the first flexible hinge, and the two pressure-applying portions are respectively located on both sides of the rotation center of the second flexible hinge; the two pressure-applying portions apply force F1 and force F2 to the second flexible hinge, respectively, and the directions of force F1 and force F2 are the same; force F1 and force F2 generate a torque difference to the second flexible hinge; when the torque difference is zero, the second flexible hinge translates in the first flexible hinge to adjust the position of the nozzle assembly in the Y direction; when the torque difference is not zero, the second flexible hinge rotates in the first flexible hinge to adjust the inclination angle of the nozzle assembly.

[0010] In one embodiment of the present invention, the pressure-applying portion includes a tightening screw and a threaded hole; the threaded hole is provided on the side wall of the first flexible hinge and passes through the side wall of the first flexible hinge; the tightening screw is threadedly connected in the threaded hole, and the end of the tightening screw is against the outer wall of the second flexible hinge.

[0011] In one embodiment of the present invention, the pressure-applying portion is disposed on a side surface of the first flexible hinge, and the side surface extends in the X direction.

[0012] In one embodiment of the present invention, the two pressing parts are symmetrically arranged.

[0013] In one embodiment of the present invention, the present application also includes two pressing blocks; the pressing block is connected to the top of the second flexible hinge, and a connecting hole is provided on the pressing block; a hose is provided in the connecting hole; an inkjet port is provided on the connecting part, and the hose is connected to the inkjet port.

[0014] The present invention provides a printing device, comprising: At least one piezoelectric nozzle module with precise position adjustment function according to any of the above embodiments; The printing mechanism is connected to the piezoelectric nozzle module.

[0015] The above technical solution of the present invention has the following advantages over the prior art: The piezoelectric nozzle module and printing device with precise position adjustment function described in the present invention facilitate precise adjustment of the position of the nozzle assembly in the second flexible hinge through the coordinated action of the adjustment part, the first flexible hinge and the second flexible hinge; and adjust the inclination angle α of the nozzle assembly to ensure that the nozzle assembly is perpendicular to the travel direction of the paper, thereby improving printing accuracy and improving printing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein: Figure 1 1 is a schematic structural diagram of a piezoelectric nozzle module with a precise position adjustment function in a preferred embodiment of the present invention; Figure 2 yes Figure 1 A top view of the piezoelectric nozzle module with precise position adjustment function is shown; Figure 3 yes Figure 1 The schematic diagram of the structure of the piezoelectric nozzle module with precise position adjustment function without the pressure block is shown; Figure 4 yes Figure 3 The main view; Figure 5 yes Figure 4 AA cross-sectional view; Figure 6 1 is a schematic diagram of the relationship between the piezoelectric nozzle module with precise position adjustment function and the paper; Figure 7 It is a simulation analysis diagram; Description of the accompanying drawings: 100, adjustment base; 110, first flexible hinge; 120, second flexible hinge; 130, movable gap; 140, first hinge structure; 141, first flexible groove; 150, second hinge structure; 151, second flexible groove; 200, nozzle assembly; 210, nozzle body; 220, connecting portion; 221, inkjet port; 300, adjusting portion; 310, pressure applying portion; 311, tightening screw; 312, threaded hole; 400, pressing block; 410, communicating hole; 500. Paper. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0018] Reference Figures 1 to 6 As shown, an embodiment of the present invention provides a printing device comprising: a printing mechanism and at least one piezoelectric nozzle module with precise position adjustment function; the printing mechanism is connected to the piezoelectric nozzle module. In some embodiments, there are multiple piezoelectric nozzle modules. The multiple piezoelectric nozzle modules can be arranged side by side or spliced ​​together.

[0019] The piezoelectric nozzle module with precise position adjustment function includes an adjustment base 100 , a nozzle assembly 200 and an adjustment portion 300 .

[0020] The adjustment base 100 extends in the X direction. The adjustment base 100 includes a first flexible hinge 110 of an annular structure and a second flexible hinge 120 of an annular structure. The second flexible hinge 120 is sleeved in the first flexible hinge 110, and a movable gap 130 is defined between the second flexible hinge 120 and the first flexible hinge 110. The first flexible hinge 110 and the second flexible hinge 120 are movably connected. The nozzle assembly 200 extends in the X direction; the nozzle assembly 200 is connected to the second flexible hinge 120; The adjustment portion 300 connects the first flexible hinge 110 and the second flexible hinge 120 . The adjustment portion 300 is used to drive the second flexible hinge 120 to move within the first flexible hinge 110 to adjust the position of the spray head assembly 200 in the Y direction, which intersects the X direction. The adjustment portion 300 is used to drive the second flexible hinge 120 to rotate within the first flexible hinge 110 to adjust the tilt angle α of the spray head assembly 200 .

[0021] Specifically, this embodiment facilitates precise adjustment of the position of the nozzle assembly 200 in the second flexible hinge 120 through the coordinated action of the adjustment portion 300, the first flexible hinge 110 and the second flexible hinge 120; and adjusts the inclination angle α of the nozzle assembly 200 to ensure that the nozzle assembly 200 is perpendicular to the travel direction of the paper 500, thereby improving printing accuracy, improving printing effects, and avoiding distortion and misalignment of the printed pattern.

[0022] Furthermore, in the X direction, at least one side of the first flexible hinge 110 is movably connected to the second flexible hinge 120 via a first hinge structure 140. In the Y direction, at least one side of the first flexible hinge 110 is movably connected to the second flexible hinge 120 via a second hinge structure 150. Under the action of the adjustment portion 300, the first hinge structure 140 and the second hinge structure 150 are deformed to adjust the tilt angle of the nozzle assembly 200.

[0023] Specifically, this embodiment utilizes the first hinge structure 140 and the second hinge structure 150 to achieve a movable connection between the first flexible hinge 110 and the second flexible hinge 120, thereby facilitating rapid adjustment of the nozzle assembly 200. Furthermore, under the action of the adjustment portion 300, the first hinge structure 140 and the second hinge structure 150 are deformed to adjust the tilt angle of the nozzle assembly 200.

[0024] Furthermore, in the X direction, both sides of the first flexible hinge 110 are movably connected to the second flexible hinge 120 through the first hinge structure 140; the two first hinge structures 140 are symmetrically arranged in the X direction; in the Y direction, both sides of the first flexible hinge 110 are movably connected to the second flexible hinge 120 through the second hinge structure 150; the two second hinge structures 150 are symmetrically arranged in the Y direction.

[0025] Specifically, this embodiment realizes the movable connection between the first flexible hinge 110 and the second flexible hinge 120 through two symmetrical first hinge structures 140 and two symmetrical second hinge structures 150, which is more stable and reliable and improves the precision of adjustment of the nozzle assembly 200.

[0026] Furthermore, in the Y direction, first flexible grooves 141 are symmetrically provided on both sides of the first hinge structure 140. The first flexible grooves 141 are square in shape (that is, the first hinge structure 140 is a square hinge structure) and communicate with the movable gap 130. In the X direction, second flexible grooves 151 are symmetrically provided on both sides of the second hinge structure 150. The second flexible grooves 151 are arc-shaped (that is, the second hinge structure 150 is an arc-shaped hinge structure) and communicate with the movable gap 130.

[0027] Samples 1 and 2 were simulated and analyzed using software. For Sample 1, both the long and short sides of the second flexible hinge 120 were connected using an arc-shaped hinge structure. For Sample 2, both the long and short sides of the second flexible hinge 120 were connected using a square hinge structure. Figure 7 As shown, the deformation of Sample 1 and Sample 2 under a force of 30N is compared. Under the same force, the deformation of the curved hinge structure is a maximum of 4.68860 / min, while the deformation of the square hinge structure is a maximum of 4.71610 / min. This shows that the deformation of the curved hinge structure is smaller than that of the square hinge structure, indicating that the curved hinge structure has greater rigidity and stability.

[0028] Specifically, because the deformation at the long side is smaller than that at the short side, and based on the above simulation results, in this embodiment, the long side of the second flexible hinge 120 is movably connected to the first flexible hinge 110 via an arc-shaped hinge structure, and the short side of the second flexible hinge 120 is movably connected to the first flexible hinge 110 via a square hinge structure; thereby, the stability and reliability of the present application are improved while ensuring the deformation requirements.

[0029] Furthermore, the adjustment part 300 includes two pressure-applying parts 310; the two pressure-applying parts 310 are arranged on the same side of the first flexible hinge 110, and the two pressure-applying parts 310 are respectively located on both sides of the rotation center of the second flexible hinge 120; the two pressure-applying parts 310 apply force F1 and force F2 to the second flexible hinge 120, respectively, and the directions of force F1 and force F2 are the same (for example, force F1 and force F2 are applied in the Y direction); force F1 and force F2 generate moment M1 and moment M2 to the second flexible hinge 120, respectively, and the moment difference = M1-M2; when moment M1 is equal to moment M2, the second flexible hinge 120 translates along the Y direction in the first flexible hinge 110 to adjust the position of the nozzle assembly 200 in the Y direction; when moment M1 is not equal to moment M2, the second flexible hinge 120 rotates in the first flexible hinge 110 to adjust the inclination angle of the nozzle assembly 200.

[0030] Specifically, this embodiment applies force to the second flexible hinge 120 through two pressure-applying parts 310, which can not only drive the second flexible hinge 120 to move to adjust the position of the nozzle assembly 200 in the second flexible hinge 120; but also rotate the nozzle assembly 200 to adjust the angle between the nozzle assembly 200 and the direction of travel of the paper 500. The structure is simple and the cost is low.

[0031] Furthermore, the two pressure-applying portions 310 are symmetrically arranged. Thus, when the applied forces F1 and F2 are equal, the second flexible hinge 120 translates within the first flexible hinge 110 to adjust the position of the spray head assembly 200 in the Y direction. When the applied force F1 is greater than or less than the applied force F2, the second flexible hinge 120 rotates within the first flexible hinge 110 to adjust the tilt angle of the spray head assembly 200. Furthermore, this embodiment provides a more aesthetically pleasing layout.

[0032] Furthermore, the pressure-applying portion 310 includes a tightening screw 311 and a threaded hole 312; the threaded hole 312 is arranged on the side wall of the first flexible hinge 110 and passes through the side wall of the first flexible hinge 110; the tightening screw 311 is connected in the threaded hole 312, and the end of the tightening screw 311 is against the outer wall of the second flexible hinge 120.

[0033] Specifically, in this embodiment, the nozzle assembly 200 can be adjusted by cooperating with the tightening screw 311 and the threaded hole 312, which makes the adjustment more convenient and quick, and has strong operability.

[0034] Furthermore, the pressure applying portion 310 is disposed on a side surface of the first flexible hinge 110 , and the side surface extends in the X direction.

[0035] Specifically, in this embodiment, the pressure portion 310 is disposed on the long side of the first flexible hinge 110. This allows for a greater deformation even with relatively small forces F1 and F2, saving effort and facilitating quick adjustment. Furthermore, the adjustment space is relatively large, making operation easier.

[0036] Furthermore, the nozzle assembly 200 includes a nozzle body 210 and connecting portions 220 disposed at both ends of the nozzle body 210. The nozzle body 210 is disposed in the second flexible hinge 120, with a gap between the nozzle body 210 and the second flexible hinge 120. The connecting portions 220 are connected to the ends of the second flexible hinge 120. The present application also includes two pressing blocks 400. The pressing blocks 400 are connected to the top of the second flexible hinge 120 and are provided with a connecting hole 410. A hose is disposed in the connecting hole 410. The connecting portion 220 is provided with an inkjet port 221, which is connected to the inkjet port 221.

[0037] Specifically, in this embodiment, the ink jet port 221 is connected to the hose via the pressing block 400 , so that ink can be stably and reliably added to the ink jet port 221 without affecting the position and tilt angle adjustment of the nozzle assembly 200 .

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A piezoelectric nozzle module with precise position adjustment function, characterized by: include: An adjustment base extending in the X direction; the adjustment base includes a first flexible hinge of an annular structure and a second flexible hinge of an annular structure, the second flexible hinge being sleeved in the first flexible hinge, and a movable gap being provided between the second flexible hinge and the first flexible hinge; the first flexible hinge and the second flexible hinge being movably connected; a nozzle assembly extending in the X direction; the nozzle assembly is connected to the second flexible hinge; an adjusting portion connecting the first flexible hinge and the second flexible hinge; The adjusting portion is used to drive the second flexible hinge to move in the first flexible hinge to adjust the position of the nozzle assembly in the Y direction, where the Y direction intersects the X direction; The adjusting portion is used to drive the second flexible hinge to rotate so as to adjust the tilt angle of the spray head assembly.

2. The piezoelectric nozzle module with precise position adjustment function according to claim 1, characterized in that: In the X direction, at least one side of the first flexible hinge is movably connected to the second flexible hinge through a first hinge structure; in the Y direction, at least one side of the first flexible hinge is movably connected to the second flexible hinge through a second hinge structure; under the action of the adjustment part, the first hinge structure and the second hinge structure are deformed to adjust the inclination angle of the nozzle assembly.

3. The piezoelectric nozzle module with precise position adjustment function according to claim 2, characterized in that: In the X direction, both sides of the first flexible hinge are movably connected to the second flexible hinge through a first hinge structure; the two first hinge structures are symmetrically arranged in the X direction; In the Y direction, both sides of the first flexible hinge are movably connected to the second flexible hinge via second hinge structures; and the two second hinge structures are symmetrically arranged in the Y direction.

4. The piezoelectric nozzle module with precise position adjustment function according to claim 3, characterized in that: In the Y direction, first flexible grooves are symmetrically provided on both sides of the first hinge structure, the first flexible grooves are square, and the first flexible grooves are connected to the movable gap; In the X direction, second flexible grooves are symmetrically provided on both sides of the second hinge structure, the second flexible grooves are arc-shaped, and the second flexible grooves are connected to the movable gap.

5. The piezoelectric nozzle module with precise position adjustment function according to claim 4, characterized in that: The adjusting portion includes two pressure-applying portions; the two pressure-applying portions are disposed on the same side of the first flexible hinge, and the two pressure-applying portions are respectively located on either side of the rotation center of the second flexible hinge; the two pressure-applying portions apply a force F1 and a force F2 to the second flexible hinge, respectively, and the directions of the force F1 and the force F2 are the same; the force F1 and the force F2 generate a torque difference on the second flexible hinge; When the torque difference is zero, the second flexible hinge translates in the first flexible hinge to adjust the position of the nozzle assembly in the Y direction; when the torque difference is not zero, the second flexible hinge rotates in the first flexible hinge to adjust the tilt angle of the nozzle assembly.

6. The piezoelectric nozzle module with precise position adjustment function according to claim 5, characterized in that: The pressure-applying portion includes a tightening screw and a threaded hole; the threaded hole is provided on the side wall of the first flexible hinge and passes through the side wall of the first flexible hinge; the tightening screw is threadedly connected to the threaded hole, and the end of the tightening screw is against the outer side wall of the second flexible hinge.

7. The piezoelectric nozzle module with precise position adjustment function according to claim 5, characterized in that: The pressure applying portion is disposed on a side surface of the first flexible hinge, and the side surface extends in the X direction.

8. The piezoelectric nozzle module with precise position adjustment function according to claim 5, characterized in that: The two pressing parts are symmetrically arranged.

9. The piezoelectric nozzle module with precise position adjustment function according to claim 1, characterized in that: It also includes two pressing blocks; the pressing block is connected to the top of the second flexible hinge, and a connecting hole is provided on the pressing block; a hose is provided in the connecting hole; an inkjet port is provided on the connecting portion, and the hose is connected to the inkjet port.

10. A printing device, characterized in that: include: At least one piezoelectric nozzle module with precise position adjustment function according to any one of claims 1 to 9; The printing mechanism is connected to the piezoelectric nozzle module.

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