A piezoelectric nozzle and suction nozzle positioning system for an inkjet printer and an installation method thereof

Abstract

The present invention relates to a piezoelectric nozzle and suction nozzle positioning system for an inkjet printer and an installation method thereof, comprising a positioning connector, a nozzle fixing plate and a suction nozzle fixing plate. A high-precision mounting surface is provided on the positioning connector. Through the high-precision mounting surface, it can be ensured that the nozzle fixing plate and the suction nozzle fixing plate have a certain dimensional accuracy relative to the surface in a direction perpendicular to the surface, thereby achieving the purpose of positioning. Compared with the conventional point-to-point positioning method, the positioning method can reduce the difficulty of positioning during installation, and at the same time simplify the steps of point-to-point positioning, thereby reducing the difficulty of positioning and improving the efficiency of positioning.

Description

Technical Field

[0001] The invention relates to the technical field of inkjet printing equipment, and in particular to a piezoelectric nozzle and suction nozzle positioning system for an inkjet printer and an installation method thereof. Background Art

[0002] Inkjet printers are widely used in the market for their vivid printing performance. Among them, piezoelectric nozzle printers have durable nozzles and are highly tolerant of ink types. They are widely used in different fields, especially in the printing of wide formats and special materials.

[0003] The piezoelectric nozzle electrically drives the piezoelectric ceramic plate to bend, thereby squeezing the ink path and achieving inkjet printing. Therefore, the outlet of the ink path is always in contact with the outside world. If it stops working for a long time, the ink at the outlet is easy to solidify and block the ink path. In order to ensure the normal operation of the piezoelectric nozzle, the piezoelectric nozzle needs to be cleaned regularly.

[0004] The existing cleaning method is to use a suction nozzle to adsorb the nozzle, and by forming a sealed cavity at the nozzle, the solidified ink at the nozzle is sucked out, thereby achieving the purpose of cleaning the nozzle. Therefore, in order to ensure the effectiveness of cleaning, it is necessary to ensure that a closed cavity is formed between the suction nozzle and the nozzle, which requires that the corresponding suction nozzle and nozzle can achieve a certain degree of position correspondence.

[0005] At present, for the positioning processing of a single nozzle and a suction nozzle, a hole structure with a certain movement margin is usually set on the mounting panel of the piezoelectric nozzle and the suction nozzle, and the purpose of adjustment and positioning is achieved by adjusting the mounting position between the hole structure; and for multiple nozzles and suction nozzles, a transition plate structure is generally added, and multiple nozzles and suction nozzles are respectively installed on the surface of the transition plate, and then the transition plate structure is installed on the corresponding fixed plate. The corresponding transition plate and the fixed plate are both provided with a hole structure with a certain movement margin. Rough adjustment is achieved by adjusting the position of the transition plate relative to the fixed plate, and finally the position of each nozzle or suction nozzle relative to the transition plate is finely adjusted.

[0006] The addition of transition plates can significantly reduce systematic errors, but the individual adjustment of multiple nozzles and suction nozzles takes a lot of time, the adjustment process is cumbersome and inefficient, and repeated adjustment of the bolt structure is likely to cause wear on the hole structure, which is not conducive to subsequent maintenance and will reduce the service life of the equipment. Summary of the invention

[0007] The object of the present invention is to provide a positioning system that can accurately position and fix a single or multiple piezoelectric nozzles and suction nozzles of an inkjet printer at the same time. It adopts a right-angle ruler structure with a precisely processed surface to align with the precisely processed surfaces on the corresponding side of the nozzle fixing plate and the nozzle fixing plate, thereby realizing the alignment and positioning of the nozzle and the suction nozzle in a direction perpendicular to the precisely processed surface, and then aligning and positioning the nozzle and the suction nozzle from another direction through the positioning system of the printing device itself. Precise positioning in two different directions can achieve precise alignment and positioning between the nozzle and the suction nozzle.

[0008] The present invention provides a piezoelectric nozzle and suction nozzle positioning system for an inkjet printer, which solves the above-mentioned technical problems.

[0009] The solution of the present invention to solve the above technical problems is as follows:

[0010] The present invention provides a piezoelectric nozzle and suction nozzle positioning system for an inkjet printer, comprising: a positioning connection member, wherein the positioning connection member comprises a first finely ground surface;

[0011] A nozzle fixing plate, the nozzle fixing plate comprising a second finely ground surface and a nozzle mounting surface, the second finely ground surface and the nozzle mounting surface are perpendicular to each other, and the second finely ground surface is fitted on the first finely ground surface;

[0012] A nozzle fixing plate, the nozzle fixing plate comprising a third finely ground surface and a nozzle mounting surface, the third finely ground surface and the nozzle mounting surface are perpendicular to each other, the third finely ground surface is fitted on the first finely ground surface, and the nozzle mounting surface and the nozzle mounting surface are parallel to each other;

[0013] It also includes a nozzle and a suction nozzle, wherein the nozzle is fixedly mounted on the nozzle mounting surface, the suction nozzle is fixedly mounted on the suction nozzle mounting surface, and the distance from the nozzle to the first fine grinding surface is the same as the distance from the suction nozzle to the first fine grinding surface.

[0014] The beneficial effects of the present invention are as follows: the present invention converts the position positioning of the nozzle and the suction nozzle into the relative position control of the nozzle relative to the fine-ground surface, the suction nozzle relative to the fine-ground surface and the three fine-ground surfaces, and the control of the relative position between the three can be achieved through simple mechanical processing accuracy. In fact, plane fine grinding and simple straight-line distance control are relatively easy to achieve, while accurate point positioning within the plane is more difficult, and the processing and forming size of the mold is also difficult to guarantee. The solution of the present invention can avoid the low production precision of parts and the cumulative error problems after the parts are matched in the prior art, thereby improving the efficiency and accuracy of positioning.

[0015] Based on the above technical solution, the present invention can also be improved as follows.

[0016] Furthermore, the number of the spray heads and the suction nozzles is the same and no less than two, and the arrangement of the multiple spray heads is the same as the arrangement of the multiple suction nozzles.

[0017] The beneficial effect of adopting the above further scheme is: compared with the single nozzle and nozzle structure, the precision control of multiple nozzles and nozzles is more difficult. Not only the relative position relationship needs to be ensured, but also the point correspondence between each nozzle and the corresponding unknown nozzle needs to be adjusted. The adjustments between multiple groups need to be independent of each other, and the workload is huge. The scheme of the present invention can avoid the point-to-point adjustment method in this scheme, but convert the precision control between multiple groups of unit equipment into a distance control problem in a single direction. Accurate positioning is achieved by ensuring the distance between the nozzle and the fine-ground surface and the distance between the nozzle and the fine-ground surface. By reducing the position correspondence adjustment in a single direction and converting the demand for the position correspondence adjustment into the adjustment of the component motion position control of the later printing equipment, the difficulty of positioning is reduced.

[0018] Furthermore, an alignment surface is provided on the positioning connector, the alignment surface is perpendicular to the first fine grinding surface, the nozzle mounting surface is parallel to the alignment surface, and the nozzle mounting surface is parallel to the nozzle mounting surface.

[0019] The beneficial effect of adopting the above further solution is that the nozzle mounting surface and the suction nozzle mounting surface can be aligned and positioned by using the alignment surface, so that the two mounting plates are parallel to each other, which is convenient for subsequent alignment and position alignment.

[0020] Furthermore, it also includes a first positioning protrusion, which is vertically fixed on the nozzle mounting surface. At least two first positioning holes are opened on the nozzle surface. The size of the first positioning protrusion is the same as the size of the first positioning hole. The nozzle is positioned and installed by matching with the corresponding number of first positioning protrusions through at least two first positioning holes.

[0021] The beneficial effect of adopting the above further solution is that the positioning protrusion and the positioning hole are positioned in a simple positioning manner, and rapid positioning and simple position fixing can be performed, which is convenient for subsequent connection and tightening operations and avoids position errors during the connection and tightening process.

[0022] Furthermore, it also includes a second positioning protrusion, which is fixedly mounted on the surface of the suction nozzle. At least two second positioning holes are provided on the suction nozzle mounting surface. The size of the second positioning protrusion is the same as the size of the second positioning hole. The suction nozzle is positioned and mounted by matching the at least two second positioning protrusions with the corresponding number of second positioning holes.

[0023] The beneficial effect of adopting the above further solution is that the positioning protrusion and the positioning hole are positioned in a simple positioning manner, and rapid positioning and simple position fixing can be performed, which is convenient for subsequent connection and tightening operations and avoids position errors during the connection and tightening process.

[0024] Furthermore, the suction nozzle also includes a base, an elastic support member and a suction head. The base is a cavity structure with an opening at the upper end, an elastic support member is installed inside the base, the suction head is arranged at the opening of the base, and the bottom of the suction head is fixedly connected to the elastic support member, wherein the elastic support member can preferably be a spring structure, and the elastic support member drives the suction head to have a tendency to move in a direction away from the base.

[0025] The beneficial effect of adopting the above further scheme is: when the spray head and the suction nozzle are aligned and pressed down at the same time, the elastic support member arranged inside the suction nozzle can ensure that there is a certain amount of movement margin space between the suction head and the spray head. At the same time, the elastic support member can also ensure that the suction head and the spray head are pressed against each other, thereby achieving a better adsorption and cleaning effect.

[0026] Furthermore, an oblong through hole is provided on the first finely ground surface, a first mounting hole is provided on the second finely ground surface, and a second mounting hole is provided on the third finely ground surface. Bolts penetrate the oblong through holes and are fastened to the first mounting hole and the second mounting hole respectively, thereby fastening the positioning connector to the nozzle fixing plate and the nozzle fixing plate.

[0027] The beneficial effect of adopting the above further solution is: providing an optional fastening connection method to fasten the positioning connector, the nozzle fixing plate and the suction nozzle fixing plate, thereby facilitating early positioning and later installation.

[0028] Furthermore, the number of the oblong through holes, the first mounting holes and the second mounting holes is the same and is at least two, and the distance between two adjacent oblong through holes, the distance between two adjacent first mounting holes and the distance between two adjacent second mounting holes are all the same.

[0029] The beneficial effect of adopting the above further solution is that the multiple mounting hole structures can ensure the position stability between the positioning connector, the nozzle fixing plate and the suction nozzle fixing plate.

[0030] Furthermore, it also includes a positioning boss. A plurality of bosses are arranged in an array on one side of the nozzle fixing plate close to the alignment surface. First bolt holes are opened at positions corresponding to the bosses on the alignment surface. Bolts penetrate the first bolt holes and are fastened to the bosses through the alignment surface.

[0031] The beneficial effect of adopting the above further solution is that the boss structure facilitates rapid determination of the parallel relationship between the alignment surface and the nozzle installation surface.

[0032] The present application also provides a method for installing a piezoelectric nozzle and a nozzle positioning system of an inkjet printer, comprising the following steps:

[0033] Step 1: Fasten the nozzle fixing plate and the suction nozzle fixing plate on the first finely ground surface of the positioning connector through the second finely ground surface and the third finely ground surface respectively;

[0034] Step 2: Move the positioning connector with the nozzle fixing plate and the nozzle fixing plate installed as a whole to the printing carriage, and fix the nozzle fixing plate on the printing carriage;

[0035] Step 3: Then move the positioning connector to the top of the ink stack, and fix the nozzle fixing plate to the ink stack;

[0036] Step 4: Remove the nozzle fixing plate and the suction nozzle fixing plate from the positioning connector to complete the positioning installation.

[0037] The beneficial effect of adopting the above installation method is that there is no need for professional technicians to repeatedly adjust the installation position of each nozzle and suction nozzle, and the positioning can be completed in one installation.

[0038] Furthermore, a plurality of first operating through holes are arranged in an array on the alignment surface, a plurality of second operating through holes are arranged in an array on the nozzle mounting surface, and a plurality of second bolt holes are arranged in an array on the nozzle mounting surface. Positions of the first operating through holes, the second operating through holes and the second bolt holes correspond to each other, and the axes of the first operating through holes, the second operating through holes and the second bolt holes coincide with each other.

[0039] The beneficial effect of adopting the above further solution is that by providing an operation through-hole structure, it is convenient to later install the corresponding nozzle fixing plate and suction nozzle fixing plate to their working positions.

[0040] Further, the diameter of the first operation through hole is larger than the diameters of the second operation through hole and the second bolt hole.

[0041] The beneficial effect of adopting the above further solution is that since the subsequent installation operations need to be performed through the first operation through hole, the size of the first operation through hole is designed to be larger, which is convenient for operation.

[0042] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0044] Figure 1 An isometric diagram of a piezoelectric nozzle and nozzle positioning system for an inkjet printer provided in one embodiment of the present invention;

[0045] Figure 2 for Figure 1 Exploded diagram of

[0046] Figure 3 for Figure 1 An exploded view from another perspective;

[0047] Figure 4 An isometric view of a positioning connector in a piezoelectric nozzle and nozzle positioning system of an inkjet printer provided by an embodiment of the present invention;

[0048] Figure 5 An isometric view of a connection state between a nozzle and a nozzle fixing plate in a piezoelectric nozzle and nozzle positioning system of an inkjet printer provided by an embodiment of the present invention;

[0049] Figure 6 for Figure 5 Exploded diagram of

[0050] Figure 7 for Figure 5 A front cross-sectional view of

[0051] Figure 8 An isometric view of a connection state between a nozzle and a nozzle fixing plate in a piezoelectric nozzle and nozzle positioning system of an inkjet printer provided by an embodiment of the present invention;

[0052] Fig. 9 for Figure 8 Exploded diagram of

[0053] Fig.10 for Figure 8 Front cross-sectional view.

[0054] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0055] 1. Positioning connector; 11. Alignment surface; 12. First finely ground surface; 111. First bolt hole; 112. First operating through hole; 121. Long round through hole; 2. Nozzle fixing plate; 21. Second finely ground surface; 22. Nozzle mounting surface; 211. First mounting hole; 23. Second bolt hole; 3. Suction nozzle fixing plate; 31. Third finely ground surface; 32. Nozzle mounting surface; 311. Second mounting hole; 321. Second positioning hole; 33. Second bolt hole; 4. Nozzle; 41. First positioning hole; 5. Nozzle; 51. Base; 52. Elastic support member; 53. Suction head; 6. First positioning protrusion; 7. Second positioning protrusion. DETAILED DESCRIPTION

[0056] The following is combined with Figure 1-10 The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. According to the following description and claims, the advantages and features of the present invention will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0057] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0059] like Figure 1-10As shown, the present invention provides a piezoelectric nozzle and nozzle positioning system for an inkjet printer, which includes a positioning connector 1, a nozzle fixing plate 2 and a nozzle fixing plate 3, wherein the nozzle fixing plate 2 is used to position and fix the nozzle 4, and the nozzle fixing plate 3 is used to position and fix the nozzle 5, wherein the positioning connector 1 includes a first finely ground surface 12 that has been finely machined, and the surface flatness of the first finely ground surface 12 is relatively high, one end of the nozzle fixing plate 2 has a second finely ground surface 21, and one end of the nozzle fixing plate 3 has a third finely ground surface 31, and the nozzle fixing plate 2 is tightly attached to the first finely ground surface 12 through the second finely ground surface 21 to achieve high-precision positioning with the positioning connector 1, and in a specific implementation scheme, the nozzle fixing plate 2 and the positioning connector 1 are fixedly connected by fasteners, such as bolts, and similarly, the nozzle fixing plate 3 is tightly attached to the first finely ground surface 12 through the third finely ground surface 31 to achieve high-precision positioning with the positioning connector 1.

[0060] Furthermore, the positioning connector 1 is provided with an alignment surface 11, which is perpendicular to the first finely ground surface 12; the nozzle fixing plate 2 is provided with a nozzle mounting surface 22, which is perpendicular to the second finely ground surface 21; the nozzle fixing plate 3 is provided with a nozzle mounting surface 32, which is perpendicular to the third finely ground surface 31. The nozzle mounting surface 22 can be arranged parallel to the alignment surface 11 by adjustment, and the nozzle mounting surface 32 can be arranged parallel to the alignment surface 11 by adjustment, so that it is also parallel to the nozzle mounting surface.

[0061] The technical solution of the piezoelectric nozzle and nozzle positioning system of the inkjet printer provided in the above embodiment can realize accurate positioning of the nozzle 4 installed on the nozzle fixing plate 2 and the nozzle 5 installed on the nozzle fixing plate 3 by accurately adjusting and positioning the nozzle fixing plate 2 and the nozzle fixing plate 3. The first finely ground surface 12 can ensure that the second finely ground surface 21 and the third finely ground surface 31 are aligned along the plane where the first finely ground surface 12 is located, and since the corresponding nozzle mounting surface 22 and the nozzle mounting surface 32 are respectively perpendicular to the second finely ground surface 21 and the third finely ground surface 31, Therefore, the structures installed on the nozzle mounting surface 22 and the nozzle mounting surface 32 can be aligned in a direction perpendicular to the first fine-ground surface 12. Specifically, it is only necessary to control the distance between the corresponding mounting structure and the second fine-ground surface 21 or the third fine-ground surface 31 to be the same or corresponding. For example, when the distance between the nozzle 4 and the second fine-ground surface 21 is the same as the distance between the nozzle 5 and the third fine-ground surface 31, if the nozzle fixing plate 2 and the nozzle fixing plate 3 are controlled to move along the straight line intersecting the first fine-ground surface 12 and the second fine-ground surface 21, the nozzle 4 and the nozzle 5 can be overlapped at a certain specific position. In actual operation of the inkjet printer, the printing carriage carrying the nozzle 4 will also reciprocate along the straight line intersecting the first fine-ground surface 12 and the second fine-ground surface 21. The printing carriage is controlled by an external mechanical control device to move until the nozzle 4 and the nozzle 5 are in the same vertical direction and stop, so that the nozzle 5 can accurately absorb ink and clean the nozzle 4.

[0062] Preferably, in one embodiment of the present invention, Figure 5 and Figure 8 As shown, the nozzle 4 is fixedly mounted on the nozzle mounting surface 22, the suction nozzle 5 is fixedly mounted on the suction nozzle mounting surface 32, and the distance from the nozzle 4 to the first fine grinding surface 12 is the same as the distance from the suction nozzle 5 to the first fine grinding surface.

[0063] Based on the above technical solution, it should be understood that the method of fastening and installation can be specifically a snap connection or a bolt fastening connection. By opening corresponding bolt holes on the nozzle mounting surface 22 and the nozzle mounting surface 32, and also opening corresponding bolt holes on the nozzle 4 and the nozzle 5, the bolts pass through the bolt holes at the corresponding positions and are tightened to achieve the fastening connection.

[0064] Specifically, Figure 5-6 and Figure 8-9 As shown, the number of the spray heads and the suction nozzles 5 is the same and no less than two, and the arrangement of the plurality of spray heads 4 is the same as that of the suction nozzles 5 .

[0065] In the above implementation manner, compared with the conventional printer using a single nozzle 4 and a single suction nozzle 5, the positioning and verification work of multiple nozzles 4 and multiple suction nozzles 5 is more cumbersome. Usually, in order to ensure the accurate positioning of the multiple nozzles 4 and the suction nozzles 5, each single nozzle 4 and the nozzle mounting plate, and each suction nozzle 5 and the suction nozzle mounting plate are provided with installation adjustment margins. For example, the screw holes for installation alignment are designed to be groove-shaped structures to facilitate the first-level position adjustment. A transition plate is also provided to achieve the second-level position adjustment between the transition plate and the mounting plate. The two-level position adjustment can respectively achieve position adjustment in different directions, thereby achieving precise positioning. For the cooperation between a single nozzle 4 and a suction nozzle 5, this adjustment method is relatively easy. If the multiple nozzles 4 and the suction nozzles 5 are to be aligned as a whole, it is necessary to adjust each nozzle 4 and each suction nozzle 5, which is difficult and labor-intensive. In the above embodiment, the overall position alignment can be achieved by fine-grinding one installation surface and then aligning it on another fine-grinded surface, and then controlling the distance between the nozzle 4 and the suction nozzle 5 and the aligned plane, and multiple nozzles 4 and suction nozzles 5 can control the relative position and the position between the relative fine-grinded surfaces to achieve precise positioning. In fact, this solution can achieve accurate positioning in one direction by pre-setting a surface with an alignment function and aligning the components to be aligned relative to the surface, while the positioning in the other direction is achieved by mechanical control during the operation of the equipment, which greatly reduces the workload and difficulty of manual positioning.

[0066] Specifically, Figure 5-7 As shown, it also includes a first positioning protrusion 6, which is vertically fixed on the nozzle mounting surface 22. At least two first positioning holes 41 are opened on the surface of the nozzle 4. The size of the first positioning protrusion 6 is the same as the size of the first positioning hole 41. The nozzle 4 is positioned and installed by cooperating with the corresponding number of first positioning protrusions 6 through at least two first positioning holes 41.

[0067] As another preferred embodiment, the first positioning protrusion 6 can also be vertically fixedly installed on the surface of the nozzle 4, and a first positioning hole 41 is opened on the nozzle installation surface 22, and the positions and sizes of the first positioning protrusion 6 and the first positioning hole 41 correspond to each other.

[0068] As the most preferred embodiment, two first positioning holes 41 are arranged on each nozzle, one of the first positioning holes 41 is a round hole, and the other positioning hole 41 is a waisted round hole. The diameters of the corresponding two first positioning protrusions 6 are slightly larger than the inner diameter of the first positioning hole of the round hole. At this time, the first positioning protrusion 6 is firstly interference fit with the round hole, and the length direction of the waisted round hole is parallel to the second fine grinding surface 21. The first positioning hole 41 of the other waisted round hole can adapt to certain processing and production errors.

[0069] In the above embodiments, most of the conventional nozzles 4 are fixedly connected to the nozzle mounting surface 22 or the corresponding nozzle transition plate by bolts, and the positioning effect is determined by the relative position relationship between the bolts and the corresponding bolt holes during installation. This leads to large positioning uncertainty, and the positioning effect requires multiple manual adjustments. In the present application, since accurate positioning can be achieved through pre-processing and subsequent mechanical equipment operation, the nozzle 4 can be directly installed on the nozzle mounting surface 22 according to the fixed requirements. Specifically, positioning is performed through the first positioning protrusion 6 and the first fixed hole 41. The positioning method is simple and the positioning and installation are fast. In order to achieve the effect of accurate positioning, the size of the first positioning protrusion 6 should match the size of the first fixed hole 41. At the same time, in order to further achieve a better fastening and installation effect, the nozzle 4 can also be fastened and installed on the nozzle mounting surface 22 by bolt connection.

[0070] Specifically, Figure 8-10 As shown, it also includes a second positioning protrusion 7, which is fixedly installed on the surface of the suction nozzle 5. At least two second positioning holes 321 are opened on the suction nozzle mounting surface 32. The size of the second positioning protrusion 7 is the same as the size of the second positioning hole 321. The suction nozzle 5 is positioned and installed by matching at least two second positioning protrusions 7 with a corresponding number of second positioning holes 321.

[0071] As another preferred embodiment, the second positioning protrusion 7 is fixedly mounted on the nozzle mounting surface 32 , a second positioning hole 321 is provided on the surface of the nozzle 5 , and the positions and sizes of the second positioning protrusion 7 and the second positioning hole 321 correspond to each other.

[0072] In the above embodiment, similar to the function of the first positioning protrusion 6, the second positioning protrusion 7 can also facilitate the accurate positioning and installation of the suction nozzle 5 on the suction nozzle mounting surface 32, and the installation is convenient and quick. It should be understood that the size of the second positioning protrusion 7 is the same as the size of the second positioning hole 321. In order to further improve the effect of fastening and installation, the suction nozzle 5 can also be fastened to the suction nozzle mounting surface 32 by bolts.

[0073] As an optimal implementation mode, each suction nozzle 5 is provided with two second positioning protrusions 7, corresponding to the two second positioning holes 321 on the suction nozzle mounting surface, wherein one second positioning hole 321 is a round hole, and the other second positioning hole 321 is a waisted round hole, and the corresponding two second positioning protrusions 7 are both cylindrical, and the diameter is slightly larger than the inner diameter of the second positioning hole 321 of the round hole. When the second positioning protrusion 7 is embedded in the second positioning hole 321 of the round hole, a certain fixing and accurate positioning effect is achieved through interference fit, and the other second positioning protrusion 7 cooperates with the second positioning hole 321 of the waisted round hole, and the length direction of the waisted round hole is parallel to the third fine-grinding surface 31, and the waisted round hole can adapt to certain processing errors.

[0074] Preferably, in one embodiment of the present invention, Figure 1-4 As shown, the first finely ground surface 12 is provided with an oblong through hole 121, the second finely ground surface 21 is provided with a first mounting hole 211, and the third finely ground surface 31 is provided with a second mounting hole 311. Bolts penetrate the oblong through hole 121 and are fastened to the first mounting hole 211 and the second mounting hole 311 respectively, thereby fastening the positioning connector 1 to the nozzle fixing plate 2 and the nozzle fixing plate 3.

[0075] In the above embodiment, the nozzle fixing plate 2 and the suction nozzle fixing plate 3 are both selectively installed on the positioning connector 1, and the positions of the corresponding suction nozzle fixing plate 3 and the nozzle fixing plate 2 also need to be adjusted according to different equipment or different usage requirements. Therefore, an oblong through hole 121 is provided to cooperate with the first mounting hole 211 on the second fine-ground surface 21 and the second mounting hole 311 on the third fine-ground surface 31 respectively. The oblong through hole 121 can change the installation position of the second fine-ground surface 21 and the third fine-ground surface 31.

[0076] Preferably, in one embodiment of the present invention, Figure 2-4 As shown, the number of the oblong through holes 121, the first mounting holes 211 and the second mounting holes 311 is the same and is at least two, and the distance between two adjacent oblong through holes 121, the distance between two adjacent first mounting holes 211 and the distance between two adjacent second mounting holes 311 are all the same.

[0077] In the above embodiment, the nozzle fixing plate 2 and the nozzle fixing plate 3 are fastened together by a through hole and a corresponding bolt structure, which cannot ensure that the positions of the nozzle fixing plate 2 and the nozzle fixing plate 3 are fixed. Therefore, as a preferred solution, the number of the corresponding oblong through holes 121, the first mounting hole 211 and the second mounting hole 311 is set to be multiple, and the distance between two adjacent holes is the same. In this way, the accuracy of positioning and the fixation of the positions of the nozzle fixing plate 2 and the nozzle fixing plate 3 can be ensured. At the same time, since the distance between adjacent holes is the same, at least two holes can assist in the relative parallel installation of the nozzle fixing plate 2 and the nozzle fixing plate 3.

[0078] Preferably, in one embodiment of the present invention, it also includes a positioning boss 8, and a plurality of bosses 8 are arranged in an array on one side of the nozzle fixing plate 2 close to the alignment surface 11, and first bolt holes 111 are opened at positions corresponding to the bosses 8 on the alignment surface 11, and the alignment surface 11 is fastened to the boss 8 by bolts penetrating the first bolt holes 111.

[0079] In the above embodiment, the positioning boss 8 can facilitate the adjustment of the parallelism of the nozzle fixing plate 2 relative to the alignment surface 11. By being tightly connected to the alignment surface 11, the fixed installation between the nozzle 4 and the printing carriage can actually be simplified. By directly installing the positioning system of this solution on the printing carriage, the nozzle 4 can be quickly installed.

[0080] In the above embodiment, the suction nozzle 5 also includes a base 51, an elastic support member 52 and a suction head 53. The base 51 is a cavity structure with an opening at the upper end. The elastic support member 52 is installed inside the base 51. The suction head 53 is arranged at the opening of the base 51. The bottom of the suction head 53 is fixedly connected to the elastic support member 52. A second positioning hole 321 is provided on a side of the base 51 away from the suction head 53.

[0081] Preferably, in one embodiment of the present invention, Figure 2 As shown, a plurality of first operating through holes 112 are arranged in an array on the alignment surface 11, a plurality of second operating through holes 23 are arranged in an array on the nozzle mounting surface 22, and a plurality of second bolt holes 33 are arranged in an array on the nozzle mounting surface 32. The positions of the first operating through holes 112, the second operating through holes 23 and the second bolt holes 33 correspond to each other, and the axes of the first operating through holes 112, the second operating through holes 23 and the second bolt holes 33 coincide with each other.

[0082] In the above embodiment, the positions of the second fine grinding surface 21 and the third fine grinding surface 31 are not limited. The second fine grinding surface 21 can be any one of the four end sides of the nozzle fixing plate 2, and the third fine grinding surface 31 can be any one of the four end sides of the nozzle fixing plate 3.

[0083] In the above implementation mode, the positioning system of this solution is used.

[0084] First, the positioning connector 1, the nozzle fixing plate 2 and the nozzle fixing plate 3 are positioned and fixed, so that the nozzle 4 and the nozzle 5 installed on the corresponding fixing plate can be accurately positioned, and then the nozzle fixing plate 2 and the nozzle fixing plate 3 can be respectively positioned and installed on the corresponding structure (that is, the nozzle fixing plate 2 is first assembled with the printer carriage, and then the distance and parallelism between it and the printing platform are adjusted, and the spacing between it and the printing platform is controlled. Because this is one of the key factors for the quality of printing effect), positioning can be achieved. In order to facilitate the subsequent transfer of the corresponding nozzle fixing plate 2 and the nozzle fixing plate 3 from the positioning connecting member 1 to other structures and ensure accurate positioning, the present application provides a first operating through hole 112 on the alignment surface 11 of the positioning connecting member. When transferring the nozzle fixing plate 2, a screwdriver or other tool is used to penetrate the first operating through hole 112, and the nozzle fixing plate 2 is operated, such as operating the second operating through hole 23, and the corresponding bolt structure or other fastening structure is installed to enable it to install the nozzle fixing plate 2 on other structures through the second operating through hole 23, so as to achieve positioning and installation. Similarly, the second bolt hole 33 on the nozzle fixing plate 3 can be operated through the first operating through hole 112, or the second bolt hole 33 can be operated after the first operating through hole 112 penetrates the second operating through hole 23, so as to position the nozzle fixing plate 3 and transfer and fix it after positioning.

[0085] Preferably, in an embodiment of the present invention, the diameter of the first operating through hole 112 is greater than the diameters of the second operating through hole 23 and the second bolt hole 33 .

[0086] In the above embodiment, since the positioning connector 1 is used as an auxiliary tool and the nozzle fixing plate 2 and the suction nozzle fixing plate 3 are mainly operated during the positioning transfer installation process, the diameter of the first operating through hole 112 needs to be larger to facilitate the operation.

[0087] The specific working principle and use method of the present invention are:

[0088] First, the second finely ground surface 21 and the third finely ground surface 31 are pressed against the first finely ground surface 12, and then preliminary horizontal positioning is performed through the position between the positioning boss 8 or the oblong through hole 121 and the first mounting hole 211 and the second mounting hole 311. It should be understood that the method of horizontal positioning can also be implemented in other existing feasible ways. The horizontal positioning can make the nozzle fixing plate 2 and the nozzle fixing plate 3 relatively parallel, so that the nozzle fixing plate 2 and the nozzle fixing plate 3 will not have too large an error with the corresponding printing carriage or ink stack during the later installation process. The horizontal position is maintained by the clamping structure and the first finely ground surface 12, the second finely ground surface 21 and the third finely ground surface 31 are pressed against each other. Bolts are respectively passed through the first oblong through hole 121 and the corresponding first bolt hole 111 to achieve fixation between the positioning connector 1, the nozzle fixing plate 2 and the nozzle fixing plate 3, and then the nozzle positioning system is installed on the printing carriage. The specific installation method is to install the nozzle fixing plate 2 on the printing carriage. At this time, the entire nozzle positioning system is fixed with the nozzle fixing plate 2, adjust the position of the printing carriage to the installation position of the nozzle 5, and operate the second bolt hole 33 through the first operating through hole 112, so that the nozzle fixing plate 3 is installed to its corresponding working position, such as an ink stack, while maintaining the corresponding position. At this time, the positions of the nozzle 4 on the printing carriage and the nozzle 5 on the ink stack on the horizontal plane perpendicular to the movement direction of the printing carriage correspond to each other. When the printing carriage moves, the nozzle 4 can be selectively and accurately docked with the nozzle 5. At this time, if the nozzle 4 moves to just above the nozzle 5, the nozzle 4 can be adsorbed and cleaned by driving the ink stack. After the installation is completed, the positioning connector 1 is removed from the nozzle fixing plate 2 and the nozzle fixing plate 3.

[0089] In fact, in this solution, there is no need to adjust and position a single nozzle and suction nozzle. It is only necessary to ensure that the three fine-ground surfaces are in close contact, and the relative positions of the corresponding nozzles 4 and suction nozzles 5, as well as the distances between the nozzles 4 and suction nozzles 5 and the fine-ground surfaces on the corresponding mounting plates are the same. When the machining accuracy of the fine-ground surfaces can be guaranteed, the corresponding installation position can also be determined, so the positioning effect can also be guaranteed, and the positioning process only needs to ensure that the machining accuracy of the parts meets the standards.

[0090] In other embodiments, the positioning connector 1 may be fixed first, and then the nozzle fixing plate 2 and the nozzle fixing plate 3 may be operated through the first operating through hole 112, so that the two fixing plates can be installed to their corresponding installation positions, such as a printing carriage and an ink stack, respectively, to achieve the purpose of positioning installation.

[0091] It should be understood that when the first fine-ground surface 21, the second fine-ground surface 31 and the first fine-ground surface 12 are installed tightly together, bolts can be used at the first oblong through hole 121, and the bolt structure can optionally use a locking structure such as a spring leaf with a tightening effect or a compression spring. All structures that can be used in the prior art for locking in threaded cooperation can be implemented here. For the parallel positioning between the nozzle fixing plate 2 and the nozzle fixing plate 3, the existing positioning boss 8 can be used for alignment, or the alignment method that can be used in the prior art can be used for operation.

[0092] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A piezoelectric nozzle and suction nozzle positioning system for an inkjet printer, characterized in that: include: A positioning connection member (1), wherein the positioning connection member (1) is provided with a first finely ground surface (12); a nozzle fixing plate (2), wherein the nozzle fixing plate (2) comprises a second finely ground surface (21) and a nozzle mounting surface (22), wherein the second finely ground surface (21) and the nozzle mounting surface (22) are perpendicular to each other, and the second finely ground surface (21) is mounted on the first finely ground surface (12); and a nozzle fixing plate (3), wherein the nozzle fixing plate (3) comprises a third finely ground surface (31) and a nozzle mounting surface (32), wherein the third finely ground surface (31) and the nozzle mounting surface (32) are perpendicular to each other, and the third finely ground surface (31) is mounted on the first finely ground surface (12). The positioning connecting member (1) is also provided with an alignment surface (11), the alignment surface (11) and the first fine grinding surface (12) are perpendicular to each other, the nozzle mounting surface (22) and the alignment surface (11) are parallel to each other, the suction nozzle mounting surface (32) and the nozzle mounting surface (22) are parallel to each other, and also includes a boss (8), a plurality of bosses (8) are arranged in an array on one side of the nozzle fixing plate (2) close to the alignment surface (11), first bolt holes (111) are opened at positions corresponding to the bosses (8) on the alignment surface (11), and the alignment surface (11) is penetrated by bolts through the first bolt holes (111) and is fastened to the boss (8).

2. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 1, characterized in that: It also comprises a nozzle (4) and a suction nozzle (5), wherein the nozzle (4) is fixedly mounted on a nozzle mounting surface (22), and the suction nozzle (5) is fixedly mounted on a suction nozzle mounting surface (32), and the distance from the nozzle (4) to the first fine grinding surface (12) is the same as the distance from the suction nozzle (5) to the first fine grinding surface (12).

3. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 2, characterized in that: The number of the spray heads (4) and the suction nozzles (5) is the same and no less than two, and the arrangement of the plurality of spray heads (4) is the same as the arrangement of the plurality of suction nozzles (5).

4. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 2, characterized in that: The nozzle (4) further comprises a first positioning protrusion (6), wherein the first positioning protrusion (6) is vertically fixedly mounted on the nozzle mounting surface (22), and at least two first positioning holes (41) are provided on the surface of the nozzle (4), and the size of the first positioning protrusion (6) is the same as the size of the first positioning hole (41), and the nozzle (4) is positioned and mounted by matching with a corresponding number of first positioning protrusions (6) through the at least two first positioning holes (41).

5. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 2, characterized in that: It also includes a second positioning protrusion (7), which is fixedly mounted on the surface of the suction nozzle (5), and at least two second positioning holes (321) are provided on the suction nozzle mounting surface (32). The size of the second positioning protrusion (7) is the same as the size of the second positioning hole (321), and the suction nozzle (5) is positioned and mounted by matching the at least two second positioning protrusions (7) with the corresponding number of second positioning holes (321).

6. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 2, characterized in that: The suction nozzle (5) further comprises a base (51), an elastic support member (52) and a suction head (53); the base (51) is a cavity structure with an upper end opening, the elastic support member (52) is installed inside the base (51), the suction head (53) is arranged at the opening of the base (51), and the bottom of the suction head (53) is fixedly connected to the elastic support member (52).

7. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 1, characterized in that: The first finely ground surface (12) is provided with an oblong through hole (121), the second finely ground surface (21) is provided with a first mounting hole (211), and the third finely ground surface (31) is provided with a second mounting hole (311). Bolts penetrate the oblong through hole (121) and are respectively fastened to the first mounting hole (211) and the second mounting hole (311), thereby fastening the positioning connector (1) to the nozzle fixing plate (2) and the nozzle fixing plate (3).

8. The piezoelectric nozzle and suction nozzle positioning system of an inkjet printer according to claim 7, characterized in that: The number of the oblong through holes (121), the first mounting holes (211) and the second mounting holes (311) is the same and at least two, and the distance between two adjacent oblong through holes (121), the distance between two adjacent first mounting holes (211) and the distance between two adjacent second mounting holes (311) are all the same; a plurality of first operating through holes (112) are arranged in an array on the alignment surface (11), a plurality of second operating through holes (23) are arranged in an array on the nozzle mounting surface (22), and a plurality of second bolt holes (33) are arranged in an array on the nozzle mounting surface (32); the positions of the first operating through holes (112), the second operating through holes (23) and the second bolt holes (33) correspond to each other, and the axes of the first operating through holes (112), the second operating through holes (23) and the second bolt holes (33) coincide with each other.

9. A method for installing a piezoelectric nozzle and a nozzle positioning system for an inkjet printer according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: step 1, respectively fastening and installing the nozzle fixing plate (2) and the suction nozzle fixing plate (3) on the first finely ground surface (12) of the positioning connecting member (1) through the second finely ground surface (21) and the third finely ground surface (31); step 2, moving the positioning connecting member (1) on which the nozzle fixing plate (2) and the suction nozzle fixing plate (3) are installed as a whole to the printing carriage, and fixing the nozzle fixing plate (2) on the printing carriage; step 3, then moving the positioning connecting member (1) to the top of the ink stack, and fixing the suction nozzle fixing plate (3) to the ink stack; step 4, respectively removing the nozzle fixing plate (2) and the suction nozzle fixing plate (3) from the positioning connecting member (1), and completing the positioning installation.

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