Spray head positioning bottom plate and spray head

Abstract

The utility model relates to a shower nozzle positioning bottom plate and a shower nozzle, which comprises a shower nozzle mounting bottom plate, a plurality of mounting grooves are arranged at the top of the shower nozzle mounting bottom plate according to the mounting requirements of the shower nozzle, and a plurality of positioning reference structures are arranged at the top of the shower nozzle mounting bottom plate. Corresponding positioning reference structures are arranged near the three corners of each mounting groove, two of the three positioning reference structures are arranged in the X-axis direction, and the other positioning reference structure is arranged in the Y-axis direction. The two groups of positioning reference structures for controlling the distance between the rear ends of the two nozzles in the Y-axis direction are arranged on the nozzle mounting bottom plate, so that accurate positioning and mounting of the distance between the rigid surfaces of the rear sides of the nozzles in the Y-axis direction are easier, and the accurate distance (the tolerance of the position distance is within 0.01 mm) between the nozzles in the Y-axis direction is controlled by using the positioning reference; professionals do not need to spend a lot of energy for debugging, time, labor and money are saved, second installation can be really achieved, and therefore the printing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printers, in particular to a nozzle positioning base plate and a nozzle. Background Art

[0002] With the continuous expansion of the application field of inkjet digital printing, the number of nozzles in a single machine is increasing, and the contradiction in the splicing accuracy between multiple nozzles is becoming more and more prominent. The higher the distance positioning accuracy between each nozzle along the paper feeding direction (also referred to as the Y-axis direction in this article) (generally required to be 0.01mm level), the better the printing quality. At present, most of the products on the market use traditional manual debugging, which is increasingly unsuitable for the increase in the number of nozzles. The workload is too large, the labor cost and technicality are high, and the maintenance cycle is too long (it often takes 3 days for a professional master to adjust 8 nozzles). Non-professional masters cannot operate it, and in the process of manual debugging by professional masters, it is also easy to have inaccurate debugging, which greatly affects the positioning accuracy between multiple nozzles along the paper feeding direction. Utility Model Content

[0003] The utility model aims to provide a nozzle positioning base plate to solve the above-mentioned technical problems.

[0004] The utility model solves the above-mentioned technical problems as follows: a nozzle positioning base plate, including a nozzle mounting base plate. According to the nozzle installation requirements, a plurality of mounting grooves are opened on the top of the nozzle mounting base plate, and a plurality of positioning reference structures are arranged on the top of the nozzle mounting base plate. Corresponding positioning reference structures are arranged near the three corners of each mounting groove on the upper surface of the nozzle mounting base plate. Among the three positioning reference structures arranged for each mounting groove, two are arranged along the X-axis direction and the other is arranged along the Y-axis direction.

[0005] Furthermore, the positioning reference structure is integrally formed with the nozzle mounting base plate.

[0006] Furthermore, the positioning reference structure includes a positioning reference and a fixing part. On the upper surface of the nozzle mounting base plate, corresponding fixing parts are arranged near the three corners of each mounting groove, and each fixing part is provided with a positioning reference through a fixing adhesive sleeve.

[0007] Furthermore, the nozzle mounting bottom plate is provided with a plurality of mounting holes located on the left and right sides of the mounting groove, and a corresponding fixing piece is arranged inside each of the mounting holes.

[0008] Furthermore, the positioning reference is a vertical column.

[0009] Furthermore, the fixing member is a screw.

[0010] Furthermore, compression springs for abutting against the front end of the nozzle are respectively arranged at left and right positions of the front end of the inner surface of the mounting groove.

[0011] Furthermore, a jig is provided on the upper surface of the nozzle mounting base plate, and the active surface of the jig is used to press against the front sides of two positioning references of a certain mounting groove along the X-axis direction and be detachably fastened. The two positioning references corresponding to the certain mounting groove along the X-axis direction are the first group of positioning references, and the two positioning references corresponding to the other mounting groove along the X-axis direction are the second group of positioning references. The active surface of the jig is provided with a first pressing block and a second pressing block at two locations, which are respectively used to press against the front sides of two positioning references of the second group along the X-axis direction nearby and be detachably fastened.

[0012] Furthermore, one end of the first abutting block is provided with a protruding end for abutting against a positioning reference.

[0013] Furthermore, the fixture is integrally formed with the first pressing block and the second pressing block, and the first pressing block is integrally formed with the protruding end.

[0014] Furthermore, a boss located on one side is fixedly connected to the bottom of one end of the jig, and the flatness tolerance of the inner side surface of the boss is at the μm level or higher. The inner side surface of the boss is used to abut against a side surface of the nozzle mounting base along the Y-axis direction, and the inner side surface of the boss is perpendicular to the jig active surface to ensure that the jig active surface is parallel to a side surface of the nozzle mounting base along the X-axis direction.

[0015] One of the beneficial effects of the purpose of the utility model is:

[0016] 1. By arranging two groups of positioning reference structures for controlling the distance between the rear ends of the two nozzles on the nozzle installation base plate (two positioning reference structures in each group of positioning reference structures are arranged along the X-axis direction), the precise positioning and installation of the Y-axis direction between the nozzles is easier (the position spacing tolerance is within 0.01mm). The positioning reference is used to control the precise spacing between the nozzles along the Y-axis direction (the position spacing tolerance is within 0.01mm), without the need for professional masters to spend a lot of energy on debugging, saving time, labor and money, and can truly be installed in seconds, thereby improving the printing effect.

[0017] 2. A highly flat surface is used as the installation surface for all nozzles. Three vertical columns are added to the nozzle installation base plate to achieve accurate positioning of a single nozzle. Then, according to the number of nozzles required for a single machine, the number of vertical columns is increased accordingly. The preferred fixing glue is one with low curing shrinkage and high hardness after curing. The flatter the surface of the vertical column and the higher the surface finish, the better the nozzle positioning;

[0018] 3. The processing is simple and more accurate, and only the single plane accuracy of the installation surface is pursued. There is no lifting and lowering action of the processing tool in the processing process of this plane, the processing accuracy is high, and the plane error is smaller; the reference surface error of all nozzle installations is low and more consistent. The requirements for processing equipment and processes are lower, and the cost performance is higher. It is more versatile and can be used for reference and application for all nozzle splicing and positioning.

[0019] 4 The number of fixed parts installed is adjusted according to the number of positioning references installed to ensure that the fixture can press against each positioning reference in the X-axis direction so that the positioning reference always remains in a vertical state.

[0020] A boss is provided on one side of the high-precision fixture to ensure that the fixture action surface is parallel to a side surface of the nozzle mounting base along the X-axis direction.

[0021] 6. When the fixing glue is completely hardened, remove the fixture to ensure the high-precision spacing requirements of each group of positioning references corresponding to each installation slot along the Y-axis direction (the position spacing tolerance is within 0.01mm). Use the fixture to control the precise spacing of each group of positioning references along the Y-axis direction (the position spacing tolerance is within 0.01mm). The fixture can be used repeatedly without manual debugging by professionals, which saves more time and labor costs and can better ensure the distance positioning accuracy of each nozzle in the Y-axis direction.

[0022] The utility model also provides a nozzle, including a nozzle without a reference, a nozzle seat, and a nozzle frame, wherein the nozzle seat and the nozzle frame are both rigid structures, the nozzle seat is fixedly mounted on the lower part of the nozzle without a reference, and the nozzle frame is mounted on the upper end of the nozzle seat. Before being fixed, the nozzle seat can be slidably adjusted in the Y-axis direction relative to the nozzle frame, and after precise adjustment, the nozzle seat and the nozzle frame are fixed to each other.

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present 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 on the present invention. In the drawings:

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a nozzle positioning base plate provided in one embodiment of the utility model;

[0026] Figure 2A schematic diagram of the three-dimensional structure of a nozzle positioning base plate provided in another embodiment of the utility model;

[0027] Figure 3 for Figure 2 A schematic structural diagram of a positioning reference and a fixing member in a nozzle positioning base plate according to an embodiment is provided;

[0028] Figure 4 for Figure 2 A schematic structural diagram of a nozzle positioning base plate (with a fixture, a first abutting block, and a second abutting block) provided at a viewing angle;

[0029] Figure 5 for Figure 4 A schematic structural diagram of a nozzle positioning base plate (with a fixture, a first abutting block, and a second abutting block) provided in another viewing angle;

[0030] Figure 6 for Figure 5 A top view of a nozzle positioning base plate (with a fixture, a first abutting block, and a second abutting block) is provided;

[0031] Figure 7 for Figure 5 A front view of a nozzle positioning base plate (with a fixture, a first tightening block, and a second tightening block) is provided;

[0032] Figure 8 for Figure 2 A schematic diagram of the structure of a nozzle positioning base plate (with a compression spring) at a certain viewing angle is provided;

[0033] Fig. 9 for Figure 1 A schematic diagram of a top view of a nozzle positioning base plate (without positioning reference and fixing parts) is provided;

[0034] Fig.10 for Figure 1 A schematic diagram of the structure of a nozzle positioning base plate (with or without a reference nozzle, a nozzle seat, and a nozzle frame) at a certain viewing angle is provided;

[0035] Fig.11 It is a structural schematic diagram of a nozzle seat and a nozzle frame added to a nozzle without a reference provided by the utility model in the prior art;

[0036] Fig.12 A schematic diagram of the structure of the nozzle seat and the nozzle frame provided by the utility model in an installed state;

[0037] Fig.13 A schematic diagram of a structure without a reference nozzle provided in the prior art;

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1. Nozzle mounting base plate; 2. Mounting groove; 3. Mounting hole; 40. Positioning reference; 41. Fixing piece; 5. Jig; 51. First action surface; 52. Boss; 53. First clamping block; 54. Extending end; 55. Second action surface; 56. Third action surface; 57. Second clamping block; 58. Fourth action surface; 8. Compression spring; 9. Nozzle without reference; 10. Nozzle seat; 11. Nozzle frame; 111. Nozzle frame positioning hole; 112. Nozzle frame positioning surface. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-13 The principles and features of the present invention are described, and the examples given 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 in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. 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 conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0041] 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.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field 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.

[0043] like Figure 1-13 As shown, the utility model provides a nozzle positioning base plate, comprising a nozzle mounting base plate (1), a plurality of mounting grooves (2) are equidistantly provided on the top of the nozzle mounting base plate (1), a plurality of positioning reference structures (4) are provided on the top of the nozzle mounting base plate (1), and corresponding positioning reference structures are provided near the three corners of each mounting groove (2) on the upper surface of the nozzle mounting base plate (1), and two of the three positioning reference structures are arranged along the X-axis direction and the other is arranged along the Y-axis direction.

[0044] The beneficial effects of the above embodiments are:

[0045] By providing two groups of positioning reference structures for controlling the distance between the rear ends of the two nozzles on the nozzle installation base plate (the two positioning reference structures in each group of positioning reference structures are arranged along the X-axis direction), the precise positioning and installation of the nozzles in the Y-axis direction is made easier (the position spacing tolerance is within 0.01mm). The positioning reference is used to control the precise spacing between the nozzles along the Y-axis direction (the position spacing tolerance is within 0.01mm), which does not require professional masters to spend a lot of energy on debugging, saving time, effort and money, and can truly be installed in seconds, thereby improving printing effects.

[0046] Furthermore, in order to improve the position accuracy of the positioning reference mechanism, the positioning reference structure (4) and the nozzle mounting base plate (1) are integrally formed. This embodiment is processed as an integral unit, and each positioning reference structure can be milled to the bottom with one cut, without the lifting and lowering action of the tool, which can further ensure the accuracy of the distance between each other and the processing accuracy of the external dimensions. In addition, the molding process is completed in one go, and there is no error in the assembly action. The stability of the accuracy and quality is only affected by the inherent accuracy of the processing machine and the processing molding procedure, and the product quality is more stable. The disadvantage of this integral molding method is that the processing cost is relatively high, and there is no need to use a fixture to finally determine the precise position of the positioning reference structure. At most, the external dimensions of the positioning reference structure (4) need to be refined twice.

[0047] Furthermore, in order to save processing costs, the positioning reference structure (4) and the nozzle mounting base plate (1) can also be made into a separate type, and the positioning reference structure (4) includes a positioning reference (40) and a fixing part (41). On the upper surface of the nozzle mounting base plate (1), corresponding fixing parts (41) are arranged near the three corners of each mounting groove (2), and each of the fixing parts is provided with a positioning reference (40) by means of a fixing adhesive sleeve.

[0048] Furthermore, the nozzle mounting base plate (1) is provided with a plurality of mounting holes (3) located on the left and right sides of the mounting groove (2), and a corresponding fixing member (41) is arranged inside each mounting hole (3).

[0049] Furthermore, the positioning reference (40) is a vertical column.

[0050] Furthermore, the fixing member (41) is a screw.

[0051] Furthermore, compression springs (8) for abutting against the front end of the nozzle are respectively arranged at left and right positions of the front end of the inner surface of the installation groove (2).

[0052] Furthermore, a jig (5) is provided on the upper surface of the nozzle mounting base plate (1), and the active surface of the jig is used to press against the front side of two positioning references (40) of a certain mounting groove (2) along the X-axis direction (scanning direction) and detachably fasten them. The two positioning references (40) corresponding to the certain mounting groove (2) along the X-axis direction (scanning direction) are the first group of positioning references, and the two positioning references (40) corresponding to the other mounting groove (2) along the X-axis direction (scanning direction) are the second group of positioning references. The active surface of the jig (5) is provided with a first pressing block (53) and a second pressing block (57) at two locations, respectively, which are used to press against the front side of the two positioning references (40) of the second group along the X-axis direction and detachably fasten them.

[0053] Furthermore, one end of the first abutting block (53) is provided with a protruding end (54) for abutting against the positioning reference (40).

[0054] Furthermore, the fixture (5) is integrally formed with the first abutting block (53) and the second abutting block (57), and the first abutting block (53) is integrally formed with the protruding end (54).

[0055] Furthermore, a boss (52) located on one side of (1) is fixedly connected to the bottom of one end of the jig (5), and the flatness tolerance of the inner side surface of the boss (52) is μm level (micrometer level) or higher precision. The inner side surface of the boss (52) is used to abut against a side surface of the nozzle mounting base plate (1) along the Y-axis direction, and the inner side surface of the boss (52) is perpendicular to the jig active surface to ensure that the jig active surface is parallel to a side surface of the nozzle mounting base plate (1) along the X-axis direction.

[0056] The utility model also provides a method for installing a nozzle positioning reference, comprising the following steps:

[0057] 1) According to the structural design of the nozzle, corresponding fixing parts (41) are arranged near the three corners of each installation groove (2) on the upper surface of the nozzle installation base plate (1), and then a plurality of positioning references (40) are respectively sleeved on the plurality of fixing parts (41), and fixing glue is injected into the gap between the positioning references (40) and the fixing parts (41) for bonding;

[0058] It should be pointed out below that the X-axis direction refers to the scanning direction, and the Y-axis direction refers to the paper feeding direction.

[0059] 2) When the fixing glue is not solidified, a high-precision jig (5) is used, and the flatness tolerance of the action surface of the high-precision jig (5) is μm level or higher. The high-precision jig (5) is arranged on the upper surface of the nozzle mounting base plate (1), and the action surface of the jig is used to press against the front side of two positioning references (40) of a certain mounting groove (2) along the X-axis direction (scanning direction) and be detachably fastened. The two positioning references (40) corresponding to the certain mounting groove (2) along the X-axis direction (scanning direction) are a first group of positioning references, and the two positioning references (40) corresponding to another mounting groove (2) along the X-axis direction (scanning direction) are another group of positioning references. The action surface of the jig (5) is provided with a first pressing block (53) and a second pressing block (54) at two locations, respectively, which are used to press against the front side of another group of two positioning references (40) along the X-axis direction and be detachably fastened;

[0060] 3) Let the fixing glue stand for a period of time to harden. When the fixing glue is completely hardened, remove the jig (5) to ensure the precise spacing between the front sides of the two groups of positioning references (40) along the Y-axis direction. Each group of positioning references (40) is used to abut against the rigid surface of the rear side of the nozzle. The action surface of the jig (5) includes a first action surface (51) and a second action surface (55). The first action surface (51) is used to abut against the left side of the first group of positioning references, and the second action surface (55) is used to abut against the right side of the first group of positioning references. The rear side surface of the first tightening block (53) is the third action surface 56, and the rear side surface of the second tightening block 57 is the fourth action surface 58. The third action surface 56 is used to abut against the left side of the second group of positioning references, and the fourth action surface 58 is used to abut against the right side of the second group of positioning references.

[0061] Explanation: There are three fixing members corresponding to the three corners of each installation slot (2), two of which are arranged along the X-axis direction and the other along the Y-axis direction; as the saying goes, three points determine the plane, so three fixing members are required to assist in fixing the position of a nozzle. The three positioning references (40) mounted on the three fixing members are respectively in contact with the nozzle for positioning.

[0062] Furthermore, one end of the first abutting block (53) is provided with a protruding end (54) for abutting against the positioning reference (40). Of course, in order to avoid interference, a hole can also be provided at the front end of the first abutting block (53) for one of the first group of positioning references (40) to pass through. In this case, the protruding end (54) does not need to be provided, and the first abutting block (53) can be directly moved to the right to abut against one of the other group of positioning references (40).

[0063] Furthermore, in order to further improve the stability of the overall structure and meet the precision requirements, the jig (5) is integrally formed with the first clamping block (53) and the second clamping block (57), and the first clamping block (53) is integrally formed with the protruding end (54).

[0064] Furthermore, the positioning reference (40) is a vertical column. The advantage of using a vertical column is that the line contact can better control the dimensional accuracy.

[0065] Further, by analogy, the precise spacing of the front sides of the multiple groups of positioning references (40) along the Y-axis direction (paper feeding direction) is ensured.

[0066] Furthermore, a boss (52) is provided on one side (left side) of the high-precision jig (5), and the flatness tolerance of the inner side surface of the boss (52) is at the μm level or higher precision. The inner side surface of the boss (52) is used to abut against a side surface (left side surface) of the nozzle mounting base plate (1) along the Y-axis direction, and the inner side surface of the boss (52) is perpendicular to the jig active surface to ensure that the jig active surface is parallel to a side surface of the nozzle mounting base plate (1) along the X-axis direction, thereby making the operation more precise and easy.

[0067] Furthermore, the meaning of the detachable fastening includes: detachably fixing the high-precision jig (5) on the nozzle mounting base plate (1).

[0068] Furthermore, the meaning of the detachable fastening includes: the jig (5) or the first clamping block (53) or the second clamping block (57) is clamped and fixed to the positioning reference (40) by a clamp, or the jig (5) or the first clamping block (53) or the second clamping block (57) is detachably fixed to the positioning reference (40), so that the four planes of the first action surface 51, the second action surface 55, the third action surface 56, and the fourth action surface 58 need to be tightly abutted against each positioning reference 40 at the same time.

[0069] Of course, the detachable fixing may also be any other detachable manner capable of this function in the prior art in addition to the meaning described above.

[0070] Furthermore, in order to save costs, when the jig (5) and the first abutting block (53) and the second abutting block (57) are made into a separate type (joined type), and the first abutting block (53) and the protruding end (54) are made into a separate type (joined type), the jig (5) can also be provided with a high-precision standard sheet only at the position in contact with the positioning reference (40) (i.e., the first action surface 51 and the second action surface 55), because processing the entire action surface of the jig (5) to high precision will undoubtedly increase the processing cost.

[0071] Furthermore, the fixing member (41) is a screw, and the screw thread is installed in the mounting hole on the upper surface of the nozzle mounting base plate (1). Before step 1), the upper surface of the nozzle mounting base plate (1) is finely processed into a plane at one time. The processing is simple and more accurate, and only the single plane accuracy of the mounting surface needs to be pursued. There is no rising and falling action of the processing tool in the processing process of this plane, the processing accuracy is high, and the plane error is smaller; the reference surface error of all nozzle installations is low and more consistent. The requirements for processing equipment and processes are lower, and the cost performance is higher. It has stronger versatility and can be used for reference in all nozzle splicing and positioning. The screw can be designed as a full-thread structure, and the fixing glue in the gap between the thread on the screw and the positioning reference will desperately shuttle between the gaps, so the bonding and fixing effect will be better.

[0072] The beneficial effects of the above embodiments are:

[0073] 1. When the fixing glue is completely hardened, remove the fixture to ensure the high-precision requirements of the spacing of each group of positioning references corresponding to each installation slot along the Y-axis direction (the position spacing tolerance is within 0.01mm). Use the fixture to control the precise spacing of each group of positioning references along the Y-axis direction (the position spacing tolerance is within 0.01mm). The fixture can be used repeatedly without the need for manual debugging by professional masters, which saves more time and labor costs and can better ensure the distance positioning accuracy of each nozzle in the Y-axis direction;

[0074] 2. A highly flat surface is used as the installation surface for all nozzles. Three vertical columns are added to the nozzle installation base plate to achieve accurate positioning of a single nozzle. Then, according to the number of nozzles required for a single machine, the number of vertical columns is increased accordingly. The preferred fixing glue is one with low curing shrinkage and high hardness after curing. The flatter the surface of the vertical column and the higher the surface finish, the better the nozzle positioning;

[0075] 3. The processing is simple and more accurate, and only the single plane accuracy of the installation surface is pursued. There is no lifting and lowering action of the processing tool in the processing process of this plane, the processing accuracy is high, and the plane error is smaller; the reference surface error of all nozzle installations is low and more consistent. The requirements for processing equipment and processes are lower, and the cost performance is higher. It is more versatile and can be used for reference and application for all nozzle splicing and positioning.

[0076] 4 The number of mounting seats is adjusted according to the number of vertical columns to ensure that the fixture can press against each vertical column in the X-axis direction so that the vertical column always remains in a vertical state.

[0077] A boss (52) is provided on one side of the high-precision jig (5), the inner side surface of the boss is perpendicular to the jig action surface (51), and a side surface of the nozzle mounting base plate (1) along the X-axis direction is perpendicular to a side surface along the Y-axis direction, so as to ensure that the jig action surface (51) is parallel to a side surface of the nozzle mounting base plate (1) along the X-axis direction.

[0078] The second purpose of the utility model is to provide a method for positioning and installing a nozzle.

[0079] The technical solution to achieve the second purpose of the utility model is as follows:

[0080] A method for positioning and installing a nozzle, based on the above-mentioned method for installing a nozzle positioning reference, further comprising step 4), step 4): each nozzle is then placed in a mounting groove (2) provided on a nozzle mounting base plate (1), and after the rear rigid surface of each nozzle is abutted against the front side of each group of positioning references (40) for positioning, each nozzle is then fixed on the nozzle mounting base plate (1).

[0081] It should be pointed out that the front side of each group of positioning references (40) is the positioning surface for installing the nozzle. Since most of the currently available cost-effective nozzles are made of plastic, it is not easy to control the surface dimensional accuracy and they are easy to deform. Therefore, a nozzle mounting seat and a nozzle mounting frame made of metal material can be added to the nozzle to further ensure the final positioning accuracy between the nozzles in the Y-axis direction.

[0082] The third purpose of the utility model is to provide a nozzle positioning base plate.

[0083] The technical solution to achieve the third purpose of the utility model is as follows:

[0084] A nozzle positioning base plate comprises a nozzle mounting base plate (1), a plurality of mounting grooves (2) are equidistantly provided on the top of the nozzle mounting base plate (1), a plurality of mounting holes (3) are provided on the top of the nozzle mounting base plate (1) and are located on the left and right sides of the mounting grooves (2), a fixing piece is provided inside each of the mounting holes (3), a positioning reference (40) is provided on each of the fixing pieces through a fixing adhesive sleeve, and corresponding fixing pieces (41) are provided near the three corners of each mounting groove (2) on the upper surface of the nozzle mounting base plate (1).

[0085] Further, if Figure 7As shown, compression springs (8) for abutting against the front end of the nozzle are respectively arranged at the left and right positions of the front end of the inner surface of the mounting groove (2); a jig (5) is arranged on the upper surface of the nozzle mounting base plate (1); the bottom of one end of the jig (5) is fixedly connected to a boss (6) located on one side of (1); the surface of the jig action surface (51) is used to abut against the front side of two positioning references (40) of a certain mounting groove (2) along the X-axis direction (scanning direction) and be detachably fastened; the two positioning references (40) corresponding to the certain mounting groove (2) along the X-axis direction (scanning direction) are the first group of positioning references, and the two positioning references (40) corresponding to the other mounting groove (2) along the X-axis direction (scanning direction) are the second group of positioning references; the first abutting block 53 and the second abutting block 57 are respectively arranged at two positions on the action surface of the jig (5), which are respectively used to abut against the front side of the two positioning references (40) of the second group along the X-axis direction and be detachably fastened.

[0086] Two left-right symmetrical compression springs 8 are fixedly installed on the inner top wall of the installation groove 2. When the nozzle is placed in the installation groove 2, the two compression springs 8 push the nozzle along the Y-axis direction of the nozzle installation base plate, and the nozzle is close to the two positioning references 4. During conventional use and assembly, a gap is effectively avoided between the nozzle and the corresponding positioning reference 4, making the close force more uniform and improving the assembly accuracy.

[0087] The compression spring 8 can be further upgraded to use a spring sheet that is convenient for fixing the elastic body.

[0088] The utility model provides two sets of positioning references along the X-axis direction on the nozzle installation base plate (1) for controlling the distance between the rear ends of the two nozzles, so that the accurate positioning and installation between the nozzles is easier, and there is no need for professional masters to spend a lot of energy on debugging, which saves time, labor and money, and can be installed in seconds, thereby improving the printing effect. Of course, it is understandable that the fixture (5) and the first tightening block (53) and the second tightening block (57) can also be designed as a split type, and the first tightening block (53) and the protruding end (54) can also be designed as a split type.

[0089] It should be pointed out that the contact surfaces between the above-mentioned components (nozzle mounting base plate, fixture (first clamping block, second clamping block), boss, positioning reference) must ensure high flatness accuracy or dimensional accuracy (μm level or higher accuracy) and high rigidity and strength. The first action surface 51, the second action surface 55, the third action surface 56, and the fourth action surface 58 must maintain a high degree of verticality with the nozzle mounting base plate (1) to ultimately ensure the precise spacing of the front side of the multiple groups of positioning references (40) along the Y-axis direction (paper feeding direction).

[0090] In addition, the first action surface 51 and the second action surface 55 themselves need very high flatness, at the micron level, and very high perpendicularity with the contact surface of the base plate. At the same time, the two need to be infinitely close to one plane; the third action surface 56 and the fourth action surface 58 are the same as the first action surface 51 and the second action surface 55. In addition to requiring very high flatness themselves and perpendicularity with the base plate, the two also need to be very close to each other on the same plane, with an error of micron level.

[0091] The performance characteristics of the fixture structure are essentially a plane composed of the first action surface 51 and the second action surface 55, and another plane composed of the third action surface 56 and the fourth action surface 58, and the spacing between the two planes is precisely controlled.

[0092] The utility model also provides a nozzle, comprising a nozzle without a reference (9), a nozzle seat (10), and a nozzle frame (11), wherein the nozzle seat (10) and the nozzle frame (11) are both rigid structures, the nozzle seat (10) is fixedly mounted on the lower part of the nozzle without a reference (9), and the nozzle frame (11) is mounted on the upper end of the nozzle seat (10). Before being fixed, the nozzle seat (10) can be slidably adjusted in the Y-axis direction relative to the nozzle frame (11). After precise adjustment, the nozzle seat (10) and the nozzle frame (11) are fixed to each other, so that the nozzle becomes a nozzle with a reference (for a nozzle hole), and the nozzle hole reference surface is the rear side surface of the nozzle frame (11).

[0093] In this way, the rear side of the nozzle frame (11) becomes the positioning reference surface of the nozzle nozzle hole, thereby improving the rigidity of the nozzle and preventing it from being deformed easily. The nozzle without a reference (9) can be a plastic nozzle, a nozzle without a positioning reference, or a nozzle whose reference cannot meet the printing accuracy requirements. The nozzle is installed on the nozzle mounting seat. In the prior art, many nozzle materials without a reference (this type has a high cost performance and a wide market application, while Japanese nozzles with a reference are too expensive) are made of plastic (the lack of a reference means that the plastic material is unreliable as a positioning reference surface and has a large error), and the deformation and elasticity are large. Adding a nozzle seat is convenient for forming a nozzle with the position of the nozzle frame. A relatively sliding rigid structure (the position adjustment structure can be used to adjust the precise distance between the nozzle seat and the nozzle frame in the Y-axis direction and then fix them, so that the nozzle nozzle hole and the rear side of the nozzle frame (11) can be accurately positioned). This rigid structure is convenient for precise fine-tuning and becomes a reliable positioning reference, thereby making it easier to ensure the high-precision requirements for the spacing between the nozzle nozzle and the rear side of the nozzle frame (11) along the Y-axis direction (the position spacing tolerance is within 0.01mm), and is practical in combination with the high-precision requirements for the spacing of each group of positioning references corresponding to each installation slot along the Y-axis direction (the position spacing tolerance is within 0.01mm).

[0094] Of course, the contact surface between the nozzle frame and the nozzle mounting base plate (1) has a high flatness.

[0095] At the beginning of installation, the nozzle seat 10 and the nozzle frame can slide against each other. The nozzle is installed on the nozzle seat to enhance the rigidity of the nozzle without reference. The nozzle is fixed on the nozzle seat 10. After the relative position is adjusted by sliding between the nozzle frame 11 and the nozzle seat 10, the nozzle seat 10 and the nozzle frame 11 are fixed through the nozzle frame positioning hole 111 to form a reference surface 112 for the nozzle. The contact surface between the nozzle frame 11 and the bottom plate requires high flatness, and the tolerance cannot be higher than 1 to 2 wires. The nozzle frame positioning surface 112 is pressed against the positioning reference 40 on the bottom plate to realize the positioning installation of the nozzle.

[0096] This case proposes a new method for positioning printing nozzles, that is, a highly flat surface is used as the mounting surface for all nozzles, and three vertical columns are added on it to achieve precise positioning of a single nozzle. Then, according to the number of nozzles required for a single machine, the corresponding number of vertical columns is increased. These vertical columns rely on precise fixtures to ensure their spacing error and vertical positioning. The fixture is fixed in rigid contact with the column. The secondary positioning is fixed on the highly flat nozzle mounting surface. These vertical columns are bonded to the nozzle mounting surface by special fixing glue, which is cured at room temperature (or preset temperature). These colloids are preferably adhesives with low curing shrinkage and high hardness after curing. The higher the surface flatness and surface finish of these columns, the better the nozzle positioning. It can also assist in adding a unified spring push structure between the nozzle and the mounting plate. Make the nozzle installation and positioning more accurate and simpler.

[0097] The advantages of this structure are: 1. The processing is simple and more accurate, and only the single plane accuracy of the installation surface is pursued. There is no lifting and lowering action of the processing tool in the processing process of this plane, and the processing accuracy is high and the plane error is smaller. 2. The reference surface error of all nozzle installations is low and more consistent. 3. The requirements for processing equipment and processes are lower, and the cost performance is higher. 4. It is more versatile and can be used for reference and application for all nozzle splicing and positioning.

[0098] The utility model relates to a nozzle positioning reference, a nozzle positioning installation method and a nozzle positioning base plate. On the upper surface of the nozzle installation base plate, corresponding fixing parts are arranged near the three corners of each installation slot. First, a plurality of positioning references are respectively sleeved on a plurality of fixing parts, and fixing glue is injected into the gap between the two fixing parts for bonding. The working surface of the jig is used to tightly abut against a group of two positioning references sleeved on the fixing parts along the X-axis direction and detachably fasten them. Two abutting blocks are arranged on the working surface of the jig, which are respectively used to abut against another group of two positioning references sleeved on the fixing parts along the X-axis direction and detachably fasten them. When the fixing glue is completely hardened, the jig is removed to ensure the high-precision requirements of the spacing of each group of positioning references corresponding to each installation slot along the Y-axis direction, and the jig is used to control the precise spacing of each group of positioning references along the Y-axis direction. The plane processing is simple and more accurate, and only the single plane accuracy of the nozzle positioning base plate installation surface needs to be pursued, and there is no knife-raising and knife-falling action.

[0099] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification 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 utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A nozzle positioning base plate, comprising a nozzle mounting base plate (1), characterized in that: According to the requirements for nozzle installation, a plurality of installation grooves (2) are provided on the top of the nozzle installation base plate (1), and a plurality of positioning reference structures (4) are provided on the top of the nozzle installation base plate (1). Corresponding positioning reference structures are provided near the three corners of each installation groove (2) on the upper surface of the nozzle installation base plate (1), and two of the three positioning reference structures provided for each installation groove (2) are arranged along the X-axis direction and the other is arranged along the Y-axis direction.

2. The nozzle positioning base plate according to claim 1, characterized in that: The positioning reference structure (4) and the nozzle mounting base plate (1) are integrally formed.

3. The nozzle positioning base plate according to claim 1, characterized in that: The positioning reference structure (4) comprises a positioning reference (40) and a fixing member (41). On the upper surface of the nozzle mounting base plate (1), corresponding fixing members (41) are arranged near the three corners of each mounting groove (2), and each fixing member is provided with a positioning reference (40) via a fixing adhesive sleeve.

4. The nozzle positioning base plate according to claim 1, characterized in that: The nozzle mounting base plate (1) is provided with a plurality of mounting holes (3) located on the left and right sides of the mounting groove (2), and a corresponding fixing piece (41) is arranged inside each mounting hole (3).

5. The nozzle positioning base plate according to claim 3, characterized in that: The positioning reference (40) is a vertical column.

6. The nozzle positioning base plate according to claim 3, characterized in that: The fixing member (41) is a screw.

7. The nozzle positioning base plate according to claim 1, characterized in that: Compression springs (8) for abutting against the front end of the spray head are respectively arranged at left and right locations on the front end of the inner surface of the installation groove (2).

8. The nozzle positioning base plate according to claim 1, characterized in that: A jig (5) is provided on the upper surface of the nozzle mounting base plate (1); the active surface of the jig (5) is used to press against the front side of two positioning datums (40) of a certain mounting groove (2) along the X-axis direction and to be detachably fastened; the two positioning datums (40) corresponding to the certain mounting groove (2) along the X-axis direction are the first group of positioning datums, and the two positioning datums (40) corresponding to another mounting groove (2) along the X-axis direction are the second group of positioning datums; the active surface of the jig (5) is provided with a first pressing block (53) and a second pressing block (57) at two locations, respectively, which are used to press against the front side of two positioning datums (40) of the second group along the X-axis direction and to be detachably fastened.

9. The nozzle positioning base plate according to claim 8, characterized in that: One end of the first abutting block (53) is provided with a protruding end (54) for abutting against the positioning reference (40).

10. The nozzle positioning base plate according to claim 8, characterized in that: The fixture (5) is integrally formed with the first pressing block (53) and the second pressing block (57); the first pressing block (53) is integrally formed with the protruding end (54).

11. The nozzle positioning base plate according to claim 9, characterized in that: The bottom of one end of the jig (5) is fixedly connected to a boss (52) located on one side of (1), and the flatness tolerance of the inner side surface of the boss (52) is μm level or higher precision. The inner side surface of the boss (52) is used to abut against a side surface of the nozzle mounting base plate (1) along the Y-axis direction, and the inner side surface of the boss (52) is perpendicular to the jig action surface to ensure that the jig action surface is parallel to a side surface of the nozzle mounting base plate (1) along the X-axis direction.

12. A nozzle suitable for any one of claims 1-11, characterized in that: The invention comprises a nozzle without a reference (9), a nozzle seat (10), and a nozzle frame (11); the nozzle seat (10) and the nozzle frame (11) are both rigid structures; the nozzle seat (10) is fixedly mounted on the lower part of the nozzle without a reference (9); the nozzle frame (11) is mounted on the upper end of the nozzle seat (10); before being fixed, the nozzle seat (10) can be slidably adjusted in the Y-axis direction relative to the nozzle frame (11); after precise adjustment, the nozzle seat (10) and the nozzle frame (11) are fixed to each other.

Images