CN111114131A - Double-nozzle spray head structure capable of deflecting reversely - Google Patents
Double-nozzle spray head structure capable of deflecting reversely Download PDFInfo
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- CN111114131A CN111114131A CN202010039024.3A CN202010039024A CN111114131A CN 111114131 A CN111114131 A CN 111114131A CN 202010039024 A CN202010039024 A CN 202010039024A CN 111114131 A CN111114131 A CN 111114131A
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- deflection plate
- nozzle
- spray head
- groups
- positive electrode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
Abstract
The invention discloses a double-nozzle spray head structure capable of deflecting reversely, which is provided with two groups of ink jet mechanisms, wherein the two groups of ink jet mechanisms are provided with a deflection plate group; the deflection plate group comprises a positive electrode deflection plate and a negative electrode deflection plate; the positive electrode deflection plate is fixed on the positive electrode deflection plate base; the annular permanent magnet is arranged at the position of the spray head bottom plate corresponding to the positive electrode deflection plate base; an electromagnetic coil fixed on the back of the positive electrode deflection plate base is arranged in an annular gap formed by the annular permanent magnet and the circular magnetic yoke; when the electromagnetic coil is connected with current, the relative position of the positive pole deflection plate and the negative pole deflection plate is changed according to the positive and negative or/and the magnitude of the current. The invention realizes the change of the position of the anode deflection plate relative to the cathode deflection plate in the printing process by utilizing the movable anode deflection plate, and solves the problem of pattern deformation caused by the change of the printing speed. Simultaneously, in order to enable the two nozzles to be spliced more synchronously in the spray printing area, the distance between the front and the back staggered arrangement of the nozzles is set to be smaller.
Description
Technical Field
The invention relates to the field of ink jet printers, in particular to a double-nozzle spray head structure capable of deflecting reversely.
Background
The ink jet printer is a high-tech product which applies charged ink drops, deflects the ink drops out of a spray head under the action of an electric field force when passing through a high-voltage electric field, impacts the ink drops on the surface of an object, and forms patterns or characters on a printed material by matching with the movement of the printed material.
The double-nozzle ink-jet printer is determined by the working principle of the ink-jet printer, the more the number of single-nozzle printing lines (the more the number of longitudinal dot matrixes), the exponentially decreased printing speed and quality, and the problems of splitting, overlapping, dislocation and the like of a pattern splicing area can occur in the double-nozzle ink-jet printer in order to realize high-speed, high-quality and wide-width printing. Also due to the working principle of the inkjet printer, when in jet printing, the time difference exists between the first deflected ink drop in each column in the longitudinal direction and the maximum deflected ink drop, the higher the moving speed of the printing stock is, the more inclined the jet printing pattern is, and in the application of the single-nozzle inkjet printer, the problem can be solved by manually adjusting the axial installation angle of the nozzle or adjusting the relative position of the deflection plate, as shown in fig. 4A, 4B and 4C. The double-nozzle inkjet printer cannot directly utilize the single-nozzle inkjet printer to solve the problem. The current double-nozzle inkjet printer structure can be divided into four types, which are respectively shown in fig. 5A, 5B, 5C and 5D:
FIG. 5A shows a counter-deflection mode, in which the spacing between the print surface and the nozzle is jittered, thereby causing a severe overlap or split of the spliced region. In addition, the faster the speed is, the more serious the included angle is formed by the patterns sprayed and printed by the two nozzles inclining in the opposite directions. The specific structure can be referred to CN202242328 as a high-speed dual-nozzle spray head for non-contact inkjet printing machine.
FIG. 5B shows a co-deflection mode, in which the spacing between the print surface and the nozzle is jittered, and the splicing region overlaps or splits. In addition, the faster the speed, the more inclined the same direction and the more serious the displacement of the patterns printed by the two nozzles. The specific structure can be referred to a double-nozzle spray head of a CN201693837 code spraying machine.
FIG. 5C shows a reverse deflection mode in which the dual nozzles are bilaterally symmetric and form an included angle. Because the printing ink dots need to cover the downward projection area of the recovery tank, the included angle between the two nozzles cannot be too small, so that the nozzles are not suitable for all nozzle types, and the splicing area of some nozzle types can have slight overlapping or splitting phenomena. In addition, the faster the speed is, the more serious the included angle is formed by the patterns sprayed and printed by the two nozzles inclining in the opposite directions. The concrete structure can refer to CN209616671 a double-nozzle ink jet numbering machine shower nozzle structure.
FIG. 5D shows a reverse deflection mode with the dual nozzles staggered left and right. Because the two nozzles have a large distance in the moving direction of the printing stock, when the speed of a production line is changed violently, the splicing area of the two nozzles is easy to be dislocated. In addition, the faster the speed is, the more serious the included angle is formed by the patterns sprayed and printed by the two nozzles inclining in the opposite directions. The concrete structure can refer to CN208789278 a double-nozzle structure of an ink-jet printer.
Disclosure of Invention
The present invention provides a dual nozzle structure with reverse deflection, which aims at the problems existing in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a double-nozzle spray head structure capable of deflecting reversely is provided, wherein two groups of ink jet mechanisms are arranged in the spray head, and both the two groups of ink jet mechanisms are provided with a deflection plate group;
the deflection plate group comprises a positive electrode deflection plate and a negative electrode deflection plate; positive electrode deflection plates corresponding to the two groups of ink jet mechanisms are respectively fixed on two sides of a positive electrode deflection plate base; the two groups of ink jet mechanisms use the same negative electrode deflection plate; two arc areas with opposite directions are arranged on the negative electrode deflection plate and correspond to different positive electrode deflection plates;
the position of the spray head bottom plate corresponding to the positive electrode deflection plate base is fixedly provided with an annular permanent magnet, an annular magnet yoke and a circular magnet yoke; an electromagnetic coil fixed on the back of the positive electrode deflection plate base is arranged in an annular gap formed by the annular permanent magnet and the circular magnetic yoke;
when the electromagnetic coil is connected with current, the relative position of the positive pole deflection plate and the negative pole deflection plate is changed according to the positive and negative or/and the magnitude of the current.
Preferably, the two groups of ink jet mechanisms are arranged on the nozzle bottom plate, have height difference, are parallel to each other in projection on the nozzle bottom plate, and are simultaneously vertical to the printing surface; the height difference of the two groups of ink jet mechanisms corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative electrode deflection plate.
Preferably, the two groups of ink jet mechanisms are arranged on the nozzle bottom plate, have height difference, and form an included angle in the projection on the nozzle bottom plate, and the intersection point falls on the projection surface of the negative electrode deflection plate on the nozzle bottom plate; the height difference of the two groups of ink jet mechanisms corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative electrode deflection plate.
Preferably, the two groups of ink jet mechanisms are respectively and independently provided with a nozzle gun body, a nozzle, a charging tank, a phase sensor and a recovery tank in sequence; the deflector group is arranged between the phase inductor and the recovery tank.
Further preferably, a partition plate is provided between the charging slot and the phase sensor of each of the two sets of ink ejection mechanisms.
Preferably, the positive deflection plate base is mounted on the showerhead baseplate by spring tabs.
Preferably, the gap between the base of the positive deflection plate and the base plate of the showerhead is sealed by a sealing member.
Preferably, the two positive electrode deflection plates are arranged on the positive electrode deflection plate base and have a height difference, and the height difference corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative electrode deflection plate.
The invention realizes the change of the position of the anode deflection plate relative to the cathode deflection plate in the printing process by utilizing the movable anode deflection plate, and solves the problem of pattern deformation caused by the change of the printing speed. Simultaneously, in order to enable the two nozzles to be spliced more synchronously in the spray printing area, the distance between the front and the back staggered arrangement of the nozzles is set to be smaller.
Drawings
FIG. 1A is a schematic view of a first embodiment of the present invention;
FIG. 1B is a front view of FIG. 1A;
FIG. 2A is a schematic diagram of a second embodiment of the present invention;
FIG. 2B is a front view of FIG. 2A;
FIGS. 3A and 3B are schematic diagrams illustrating the printing effect of the present invention;
FIGS. 4A, 4B, and 4C are schematic diagrams illustrating the printing effect of the single-nozzle inkjet printer;
fig. 5A, 5B, 5C, and 5D are schematic structural diagrams of a current dual-nozzle inkjet printer.
In the figure: a nozzle base plate 1; a first group of nozzle lances 11; a second set of nozzle lances 12; a first set of nozzles 21; a second set of nozzles 22; a charging tank 2; a phase inductor 3; a positive electrode deflection plate 30; a first positive electrode deflection plate 31; a second positive electrode deflection plate 32; a negative electrode deflection plate 33; a separator plate 34; a first recovery tank 4; a second recovery tank 5; a positive electrode deflection plate base 6; a negative deflection plate upper support post 71; a negative deflection plate lower support post 72; a spring plate 8; an electromagnetic coil 91; an annular permanent magnet 92; a circular yoke 93; an annular yoke 94; and a sealing member 95.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to eliminate the influence on splicing quality caused by the change of the distance between the double-nozzle spray head and a printing surface and to be suitable for all nozzle aperture types, the double-nozzle spray head with reverse deflection has two nozzles which are parallel and vertical to the printing surface (the nozzles are arranged in a staggered way/parallel) or have a smaller included angle (the two nozzles form the included angle, and first deflection ink dots of the two nozzles are parallel and vertical to the printing surface); in order to ensure that the two nozzle jet printing areas are spliced more synchronously when the production line with larger change rate is applied, the time delay of the two nozzles for jet printing the same row (longitudinal) of ink points is shorter, namely the front-back staggered arrangement distance of the nozzles needs to be smaller, so that the two nozzles share the negative electrode deflection plate, the cross section of the negative electrode deflection plate is S-shaped, and the arc-shaped deflection working surfaces are vertically symmetrical at the initial position of each nozzle ink point deflection area.
Specifically, the invention includes that two different structures can be provided to achieve the same function, wherein the first structure is shown in fig. 1A and 1B, namely, a left nozzle and a right nozzle are vertically staggered relative to a nozzle bottom plate, are parallel on a projection plane and are vertical to a printing surface; the second structure is shown in fig. 2A and 2B, in which the left and right dual nozzles are vertically staggered with respect to the nozzle bottom plate, and an included angle is formed in the projection plane, so that the first deflected dots of the left and right dual nozzles are perpendicular to the printing surface.
The first structure is as follows:
as shown in fig. 1A and 1B, the two sets of ink ejection mechanisms include a first set of nozzle gun bodies 11 and a second set of nozzle gun bodies 12 mounted on the head base plate 1, and nozzles, a charging tank 2, a phase sensor 3, a deflector group, and a recovery tank, which are provided independently of each other.
To explain the first set of ink jet mechanism in detail, a first set of nozzle gun body 11, a first set of nozzles 21, a charging tank 2, a phase sensor 3, and a first recovery tank 4 are sequentially provided.
And the area between the phase inductor 3 and the first recovery tank 4 is a deflection area, and a deflection plate group for realizing corresponding functions is installed in the deflection area. The two ends of the cathode deflection plate 33 in the deflection plate set are respectively fixed on the nozzle bottom plate 1 through the cathode deflection plate upper support column 71 and the cathode deflection plate lower support column 72. The shape of the negative electrode deflection plate 33 is as shown in fig. 1B, two groups of nozzles share one negative electrode deflection plate 33, the section of the negative electrode deflection plate 33 is in an "S" shape, the upper and lower arc-shaped areas are centrosymmetric and respectively correspond to one positive electrode deflection plate 30, and at the initial position of the ink dot deflection area of each nozzle, the arc-shaped deflection working surface is vertically symmetric; the center of the arc points to the location of the corresponding positive deflection plate 30.
The positive electrode deflection plate 30 is fixed in the movable positive electrode deflection plate base 6, an annular permanent magnet 92 is fixedly arranged at the position of the spray head bottom plate corresponding to the positive electrode deflection plate base 6, the magnetic pole of the annular permanent magnet 92 faces the upper end face and the lower end face, and an annular magnetic yoke 94 and a circular magnetic yoke 93 are arranged on the annular magnetic yoke; an electromagnetic coil 91 fixed on the back of the positive pole deflection plate base 6 is arranged in an annular gap between the annular permanent magnet 92 and the circular magnetic yoke 93 thereof; and is sealed by a sealing member 95. The positive deflection plate base 6 is fixed on the spray head bottom plate 1 through the spring pieces 8 positioned at the edges, and the spring pieces 8 have elasticity, so that the positive deflection plate base 6 can deviate when being acted by magnetic force.
The second group of ink jet mechanisms are similar to the first group of ink jet mechanisms in structure, share one positive electrode deflection plate base 6, and are also provided with a second group of nozzle gun bodies 12, a second group of nozzles 22, a charging tank, a phase sensor and a second recovery tank 5 which are independently arranged in sequence. The charging grooves and the phase sensors of the two groups of ink jet mechanisms are separated from each other by a partition plate 34.
The first positive electrode deflection plate 31 and the second positive electrode deflection plate 32 corresponding to the first group of nozzle gun bodies 11 and the second group of nozzle gun bodies 12 are arranged on two sides of the positive electrode deflection plate base 6, and a first deflection electric field area and a second deflection electric field area are correspondingly formed by the reverse arc-shaped area corresponding to the same negative electrode deflection plate 33.
The relative positions of the first group nozzle lance body 11 and the second group nozzle lance body 12 are shown in fig. 1A and 1B; the first group of nozzle gun bodies 11 and the second group of nozzle gun bodies 12 are installed on the spray head bottom plate and have height difference, and the projections on the spray head bottom plate 1 are parallel, and because of the height difference, the first positive electrode deflection plate 31 and the second positive electrode deflection plate 32 installed on the same positive electrode deflection plate base 6 also have height difference, and the difference value of the two height difference is the same as the difference value of the height difference between the central points of the two arc-shaped areas in the negative electrode deflection plate 33.
The second structure is as follows:
the relevant parts of the positive electrode deflection plate 30 of the second structure are similar to those of the first structure, except that the two groups of ink jet mechanisms are staggered up and down relative to the bottom plate, and form an included angle in the projection plane; as shown in fig. 2A, 2B; the first group of ink-jet mechanisms are sequentially provided with a first group of nozzle gun bodies 11, a first group of nozzles 21, a charging groove 2, a phase inductor 3 and a first recovery groove 4; the second group of ink-jet mechanisms are sequentially provided with a second group of nozzle gun bodies 12, a second group of nozzles 22, a charging tank, a phase sensor and a second recovery tank 5; the corresponding projection straight lines of the two groups of ink jet mechanisms on the nozzle bottom plate 1 are mutually crossed, and the projection of the crossed points falls on the projection plane of the negative electrode deflection plate 33 on the nozzle bottom plate 1.
The same is true; the two groups of ink jet mechanisms also share one negative electrode deflection plate 33, the section of the negative electrode deflection plate 33 is S-shaped, an upper arc area and a lower arc area which are opposite in direction are arranged, and the center of the arc points to the position of the corresponding positive electrode deflection plate 30.
At the same time, the first set of nozzles 21 and the second set of nozzles 22 also have corresponding height differences, which are the same as the height differences between the corresponding first positive deflection plate 31 and second positive deflection plate 32, and the height differences between the center points of the two arc-shaped areas of the corresponding negative deflection plate 33.
When the forward current is applied to both ends of the electromagnetic coil 91, the electromagnetic coil 91 and the positive electrode deflection plate base 6 move outward, whereas when the reverse current is applied to the electromagnetic coil 91, the positive electrode deflection plate base 6 moves inward, and the larger the current is, that is, the higher the applied voltage is, the larger the moving stroke is. The action principle is equivalent to that of a moving coil type electromagnetic horn. When the jet printing device works, the corresponding voltage polarity and voltage value are accessed to the two ends of the coil according to the current jet printing direction and jet printing speed, and the voltage polarity and voltage value are adjusted in real time, so that the problem that the patterns which are respectively jet printed by the two nozzles are inclined in the opposite directions to form included angles is solved, as shown in fig. 3A and 3B.
With regard to other parts of the inkjet printing machine which are not modified, reference may be made to the relevant literature in the prior art for understanding the corresponding structure or necessary equipment without improvement.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. A kind of two spray nozzle shower nozzle structure that deflects reversely, characterized by: two groups of ink jet mechanisms are arranged in the nozzle, and both the two groups of ink jet mechanisms are provided with deflection plate groups;
the deflection plate group comprises a positive electrode deflection plate and a negative electrode deflection plate; positive electrode deflection plates corresponding to the two groups of ink jet mechanisms are respectively fixed on two sides of a positive electrode deflection plate base; the two groups of ink jet mechanisms use the same negative electrode deflection plate; two arc areas with opposite directions are arranged on the negative electrode deflection plate and correspond to different positive electrode deflection plates;
the position of the spray head bottom plate corresponding to the positive electrode deflection plate base is fixedly provided with an annular permanent magnet, an annular magnet yoke and a circular magnet yoke; an electromagnetic coil fixed on the back of the positive electrode deflection plate base is arranged in an annular gap formed by the annular permanent magnet and the circular magnetic yoke;
when the electromagnetic coil is connected with current, the relative position of the positive pole deflection plate and the negative pole deflection plate is changed according to the positive and negative or/and the magnitude of the current.
2. The counter-deflecting dual nozzle spray head structure of claim 1, wherein: the two groups of ink jet mechanisms are arranged on the nozzle bottom plate, have height difference, are parallel to each other in projection on the nozzle bottom plate, and are simultaneously vertical to the printing surface; the height difference of the two groups of ink jet mechanisms corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative electrode deflection plate.
3. The counter-deflecting dual nozzle spray head structure of claim 1, wherein: the two groups of ink jet mechanisms are arranged on the nozzle bottom plate, have height difference, and form an included angle in the projection on the nozzle bottom plate, and the intersection point falls on the projection surface of the negative electrode deflection plate on the nozzle bottom plate; the height difference of the two groups of ink jet mechanisms corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative electrode deflection plate.
4. The counter-deflecting dual nozzle spray head structure according to any of claims 1-3, wherein: the two groups of ink jet mechanisms are respectively and independently provided with a nozzle gun body, a nozzle, a charging groove, a phase inductor and a recovery groove in sequence; the deflection plate group is arranged between the phase inductor and the recovery tank.
5. The counter-deflecting dual nozzle spray head structure of claim 4, wherein: and a separation plate is arranged between the charging groove and the phase inductor of each of the two groups of ink jet mechanisms.
6. The counter-deflecting dual nozzle spray head structure according to any of claims 1-3, wherein: the positive deflection plate base is arranged on the spray head bottom plate through a spring piece.
7. The counter-deflecting dual nozzle spray head structure according to any of claims 1-3, wherein: and a gap between the positive electrode deflection plate base and the spray head bottom plate is sealed by a sealing part.
8. The counter-deflecting dual nozzle spray head structure according to any of claims 1-3, wherein: two positive deflection plates are arranged on the positive deflection plate base and have height difference, and the height difference corresponds to the height difference of the central points corresponding to the two arc-shaped areas in the negative deflection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039024.3A CN111114131A (en) | 2020-01-14 | 2020-01-14 | Double-nozzle spray head structure capable of deflecting reversely |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039024.3A CN111114131A (en) | 2020-01-14 | 2020-01-14 | Double-nozzle spray head structure capable of deflecting reversely |
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| CN111114131A true CN111114131A (en) | 2020-05-08 |
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| CN202010039024.3A Pending CN111114131A (en) | 2020-01-14 | 2020-01-14 | Double-nozzle spray head structure capable of deflecting reversely |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211997A (en) * | 2021-04-21 | 2021-08-06 | 四川天邑康和通信股份有限公司 | Intelligent jet printing production process control method for double parallel butterfly-shaped lead-in optical cable |
-
2020
- 2020-01-14 CN CN202010039024.3A patent/CN111114131A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211997A (en) * | 2021-04-21 | 2021-08-06 | 四川天邑康和通信股份有限公司 | Intelligent jet printing production process control method for double parallel butterfly-shaped lead-in optical cable |
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