CN212022021U - Adopt a plurality of shower nozzles to spout sign indicating number device of seal in coordination and combination shower nozzle thereof - Google Patents

Abstract

The utility model relates to a code spraying device adopting a plurality of spray heads to spray and print in coordination and a combined spray head thereof, wherein the combined spray head comprises N spray heads, and N is a natural number more than or equal to 2; the N nozzles are arranged along the moving direction of a printing stock, wherein the projection boundaries of the flight tracks of the charged ink drops of two nozzles of the N nozzles for jetting and printing adjacent sub-patterns on the projection plane are collinear or spaced at equal intervals, and the areas in the projection boundaries do not coincide with each other; the projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field. The utility model relates to a spout a yard scheme and make the joint of a plurality of parts of the same pattern of spouting the seal respectively tight, the joint is effectual.

Description

Adopt a plurality of shower nozzles to spout sign indicating number device of seal in coordination and combination shower nozzle thereof

Technical Field

The utility model belongs to the technical field of the industry is spouted a yard and is printed in the inkjet, concretely relates to adopt a plurality of shower nozzles to spout a yard device and combination shower nozzle of seal in coordination.

Background

The code spraying device is an ink jet printing device which is controlled by a computer and is used for marking a product in a non-contact mode, the basic structure of the code spraying device can refer to fig. 1, the code spraying device shown in fig. 1 comprises a spray head, the spray head comprises a spray nozzle 1, a charging groove 2, a deflection electrode and a recovery groove 6, and the deflection electrode comprises a negative deflection electrode plate 4 and a positive deflection electrode plate 5. The nozzle 1 ejects continuous and uniform ink droplets 3 at a constant pressure, and a deflection electric field is formed in a region between the negative deflection electrode plate 4 and the positive deflection electrode plate 5. When the code spraying device carries out the spray printing work, the nozzle 1 sprays continuous and uniform ink drops 3 at a certain pressure under the control of a computer, and the ink drops 3 are charged or not charged when flying through the charging slot 2 at a certain speed; the ink drops 3 continuously fly through the charging slot 2 and pass through the deflecting electric field, wherein when the charged ink drops 3 fly through the deflecting electric field, the flying tracks are deflected and fall on the surface of a printing stock 7 passing below the spray head at a certain moving speed to form a specific pattern, such as an capital letter E shown in FIG. 2; when the uncharged ink drops 3 fly through the deflection electric field, the flight track cannot deflect and still fly along a straight line, and the uncharged ink drops 3 can fall into a recovery tank 6 which is arranged right below the nozzle 1 and above a printing stock 7, are recovered by the recovery tank 6 and reenter an ink system without falling on a printing bearing surface of the printing stock 7.

When the code spraying device performs the spray printing work, the computer controls the code spraying device to spray and print each spray printing point on the printing stock 7 by taking an object needing spray printing as a sample, so that a pattern corresponding to the object needing spray printing is sprayed and printed. For example, referring to fig. 2, the object to be jet printed is a capital letter E, and the jet printing dots for jet printing the pattern corresponding to the object to be jet printed include 4 columns and 5 rows, and total 14 jet printing dots, where the number of rows and the number of columns are merely examples.

Because the maximum jet printing height of each spray head is limited (most of the current code spraying machines, each row of single spray heads can only print 34 jet printing points at most). Therefore, when a pattern with more than 34 dots in the longitudinal direction (i.e. each row) needs to be printed, a plurality of nozzles need to cooperate to complete the printing. For example, when it is desired to eject the target patterns of "E1" and "E2" (more than 34 dots) longitudinally disposed as shown in fig. 3, the portion "E1" shown in fig. 4a may be ejected by the first head, and the portion "E2" shown in fig. 4b may be ejected by the second head. The specific method can adopt two spray heads which are arranged in front of and behind the moving direction of the printing stock, wherein one spray head is arranged on the left side of the advancing direction of the printing stock, and the other spray head is arranged on the right side of the advancing direction of the printing stock. And when the printing stock passes below the first spray head, the spray printing of the part E1 is completed, and then when the printing stock passes below the second spray head, the spray printing of the part E2 is completed.

Because the target pattern is formed by splicing two parts respectively sprayed and printed by two spray heads, the positioning of the part E1 and the part E2 respectively sprayed and printed by the two spray heads on the printing stock needs to be accurate so as to ensure that the lower part of the part E1 is tightly jointed with the upper part of the part E2, otherwise, the situation that the space is too large as shown in figure 5a or the situation that the parts are overlapped as shown in figure 5b can occur, so that the jointing effect of the parts respectively sprayed and printed on the same pattern is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned not good technical problem of partial joining effect of a plurality of parts that spout the seal respectively of same pattern, the embodiment of the utility model provides an adopt a plurality of shower nozzles to spout the yard device that spouts seal in coordination and combination shower nozzle thereof.

In one aspect of the embodiments of the present invention, a combined nozzle of a code spraying apparatus using multiple nozzles to perform cooperative printing is provided, including N nozzles, where N is a natural number greater than or equal to 2; the N nozzles are arranged along the moving direction of a printing stock, wherein the projection boundaries of the flight tracks of the charged ink drops of two nozzles of the N nozzles for jetting and printing adjacent sub-patterns on the projection plane are collinear or spaced at equal intervals, and the areas in the projection boundaries do not coincide with each other; the projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field.

In some embodiments, the N types of nozzles include a plurality of types of nozzles, the number of the types of nozzles is at least N/2 of the number of the nozzles rounded downward, and the projection boundaries of the flight trajectories of the charged ink droplets corresponding to the nozzles of the same type on the projection plane are in a left-right symmetric state.

In some embodiments, the plurality of types of nozzles comprise an a-type nozzle and a B-type nozzle, and the a-type nozzle, the B-type nozzle, the anti-180-degree-direction B-type nozzle and the anti-180-degree-direction a-type nozzle are arranged along the moving direction of the printing stock, wherein the projection boundaries of the flight trajectories of the charged ink droplets of two nozzles of the a-type nozzle and the B-type nozzle, which jet and print adjacent sub-patterns, on the projection plane are in common line or are spaced at equal intervals, and the areas in the projection boundaries do not coincide with each other.

In some embodiments, the N showerheads have the same outer dimensions and performance parameters.

In some embodiments, the projections of the virtual ejection points of all the nozzles in the N nozzles which participate in the coordinated jet printing on the projection plane coincide, wherein an intersection point at which the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the linear part of the flight trajectory of the charged ink droplet with the largest deflection amplitude under the deflection electric field extend and intersect is called the virtual ejection point of the nozzle.

In some embodiments, the projections of the virtual ejection points of all the nozzles in the N nozzles, which participate in the coordinated jet printing, on the projection plane are not overlapped or partially overlapped, but the projections of the virtual ejection points of two nozzles in adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, or the projections of the virtual ejection points of two nozzles in adjacent sub-patterns on the projection plane are spaced in a manner consistent with the equidistant spacing, wherein an intersection point at which the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the straight line part of the flight trajectory of the charged ink droplet with the largest deflection amplitude under the deflection electric field extend and intersect is called the virtual ejection point of the nozzle.

In some embodiments, when the projections of the virtual ejection points of all or part of the nozzles participating in the coordinated jet printing in the N nozzles on the projection plane are not coincident, but the projections of the virtual ejection points of two nozzles jetting adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, the projections of the virtual ejection points of two nozzles jetting adjacent sub-patterns in the N nozzles on a plane perpendicular to the moving direction of the printing material are on a line parallel to the moving surface of the carrier, wherein an intersection point at which the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the straight line part of the flight trajectory of the charged ink droplet with the largest deflection amplitude intersect in extension below the deflection electric field is called the virtual ejection point of the nozzle.

In some embodiments, when the projections of the virtual ejection points of all or part of the nozzles participating in the coordinated jet printing in the N nozzles on the projection plane are not coincident, but the projections of the virtual ejection points of two nozzles jetting adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, the projections of the virtual ejection points of two nozzles jetting adjacent sub-patterns in the N nozzles on a plane perpendicular to the moving direction of the printing material are not on a line parallel to the moving surface of the carrier, wherein an intersection point at which the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the straight line part of the flight trajectory of the charged ink droplet with the largest deflection amplitude intersect in extension under the deflection electric field is called the virtual ejection point of the nozzle.

On the other hand, the embodiment of the utility model provides an adopt a plurality of shower nozzles to spout the yard device that prints in coordination, including combination shower nozzle and control division, the combination shower nozzle includes N shower nozzles that set up along the stock direction of motion, N is the natural number more than or equal to 2; the control part divides the pattern to be jet-printed on the printing bearing surface of the printing stock along the vertical direction of the movement direction of the printing stock to obtain the sub-patterns to be jet-printed, wherein the number of the sub-patterns to be jet-printed is less than or equal to N; the number of the nozzles participating in the collaborative jet printing in the N nozzles is consistent with the number of the sub-patterns needing to be jet printed, and the control part distributes the corresponding sub-patterns needing to be jet printed for each nozzle participating in the collaborative jet printing; each nozzle participating in the cooperative jet printing prints the distributed sub-patterns under the control of the control part, wherein the projection boundaries of the flight tracks of the charged ink drops of the two nozzles for printing the adjacent sub-patterns on the projection plane are in common line or at equal intervals, and the areas in the projection boundaries do not coincide with each other; the projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field.

In some embodiments, the combined spray head is the combined spray head as described in any one of the preceding items.

The utility model has the advantages that: the embodiment of the utility model provides an adopt a plurality of shower nozzles to spout the yard device that spouts seal in coordination and combination shower nozzle thereof is through letting the flight orbit of the ink droplet that charges that spouts two shower nozzles of adjacent sub-pattern of spouting seal projection boundary on the projection plane common line or equidistance interval, and the region in the projection boundary is mutual not coincident, thereby makes two shower nozzles of spouting the adjacent sub-pattern of spouting seal the most tip in the hookup location department of adjacent sub-pattern spout seal the point, the flight orbit of the ink droplet that charges that spouts two shower nozzles of adjacent sub-pattern of spouting seal is parallel to each other in the straight line part below the electric field that deflects, even factors such as vibrations of equipment and stock size result in the distance of holding the face and shower nozzle to change in certain extent, can not appear coincidence or the too big phenomenon of interval between the spout seal pattern of each shower nozzle either, consequently spout seal the joint of a plurality of parts of the same pattern respectively, the jointing effect is good.

Drawings

Fig. 1 is a schematic structural diagram of a conventional code spraying device;

fig. 2 is a schematic view showing the spray printing effect of the existing code spraying device for spray printing capital letter E;

FIG. 3 is a schematic diagram showing the expected jet printing effect of a conventional inkjet printing device for jet printing longitudinally-arranged target patterns of 'E1' and 'E2';

FIGS. 4a and 4b are schematic views respectively showing two nozzles each ejecting a portion of the pattern shown in FIG. 3;

FIGS. 5a and 5b are schematic diagrams respectively showing the excessive spacing or overlap of the partial pattern joints respectively jetted by the two nozzles;

fig. 6 shows a schematic structural diagram of a code spraying device adopting a plurality of nozzles to spray in coordination;

fig. 7a and 7b show schematic diagrams of embodiments of the present invention for illustrating the working principle;

fig. 8a, 8b and 8c are schematic diagrams illustrating an embodiment of a virtual output point and a projection boundary of a code spraying device using multiple nozzles to perform cooperative spray printing in different situations according to an embodiment of the present invention;

fig. 9 is a schematic view illustrating another embodiment of a virtual ejection point and a projection boundary of a code spraying device using multiple nozzles to perform cooperative spray printing in different situations according to an embodiment of the present invention;

fig. 10a, 10b, 10c and 10d are schematic structural diagrams illustrating a combined nozzle of a code spraying device adopting multiple nozzles to perform cooperative spray printing according to an embodiment of the present invention in a preferred embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following embodiments.

As used herein, the term "include" and its various variants are to be understood as open-ended terms, which mean "including, but not limited to. The term "one embodiment" and the like may be understood as "at least one embodiment". The term "another embodiment" and the like may be understood as "at least one other embodiment". The term "based on" and the like may be understood as "based at least on". The terms "first", "second", "third", etc. are used merely to distinguish different features and have no essential meaning. The terms "left", "right", "front", "rear" and the like are used only to indicate a positional relationship between relative objects.

As mentioned above, the charged ink droplets (for jet printing) fly through the range of the deflecting electric field and deviate from the recovery tank in a parabolic motion, and the charged ink droplets leave the deflecting electric field and fly along a substantially straight line, and finally land on the printing surface of the printing material, as shown in fig. 6.

The projection range of the flight path of the charged ink droplet viewed from a plane perpendicular to the direction of movement of the substrate is shown in fig. 6, where path La indicates the flight path of the charged ink droplet with the smallest deflection amplitude, path Lb indicates the flight path of the charged ink droplet with the largest deflection amplitude, and path Lo indicates the flight path of the uncharged ink droplet.

For the analysis of the principle, the straight line part of the path La and the path Lb under the deflection electric field is extended to intersect at a point J, and this intersection point is referred to as a virtual outgoing point as shown in fig. 7 a. The flight trajectory of the charged ink droplets flying along the path La and the path Lb can be simplified to be ejected from the point J and fly in a straight line, as viewed from the outside of the head.

Returning to the previous example of two jets in coordinated jet printing illustrated in fig. 3, the projections of the flight trajectory ranges of the charged ink droplets on a plane perpendicular to the direction of movement of the substrate when respectively jetting the "E1" part and the "E2" part are shown in fig. 7 b. The drops in the bottom row of the jet "E1" portion fly along path Lb1, and the drops in the top row of the jet "E2" portion fly along path La 2. As can be seen from fig. 7b, the path Lb1 and the path La2 are at an angle with respect to each other and have an intersection, so that when the distance between the print substrate and the head changes, i.e. the print substrate is located below or above the intersection of the path Lb1 and the path La2, an excessive spacing or overlap occurs between the lower part of the "E1" part and the upper part of the "E2" part as shown in fig. 5a, and only when the print substrate is located at the intersection of the path Lb1 and the path La2, the lower part of the "E1" part and the upper part of the "E2" part can be tightly joined, and the pattern shown in fig. 3 can be printed.

In actual use, the distance between the printing surface and the nozzle is changed constantly within a certain range due to the influence of vibration of the apparatus, errors in the size of the printing material, and the like, so that the bonding effect between the "E1" part and the "E2" part is good or bad.

The not good technical problem of joint effect of seal is spouted respectively in order to solve a plurality of parts of same pattern, the embodiment of the utility model provides an adopt a plurality of shower nozzles to spout the sign indicating number device of seal in coordination, through the flight track of the ink droplet that charges of the virtual range extreme value of position and the shower nozzle of shooting point of shooting out that sets up each shower nozzle, can solve a plurality of parts of same pattern and spout the not good technical problem of joint effect of seal respectively.

The embodiment of the utility model provides an adopt a plurality of shower nozzles to spout spouting yard device of seal in coordination, can refer to fig. 6 and show, include: the printing system comprises a combined nozzle and a control part, wherein the combined nozzle comprises N nozzles arranged along the moving direction of a printing stock, and N is a natural number more than or equal to 2; the control part divides the pattern to be jet-printed on the printing surface of the printing stock along the vertical direction of the moving direction of the printing stock (if the moving direction of the printing stock is transverse to the paper surface as shown in fig. 2, the vertical direction of the moving direction of the printing stock is the longitudinal direction of the paper surface) to obtain the sub-patterns to be jet-printed, wherein the number of the sub-patterns to be jet-printed is less than or equal to the number of the spray heads included in the code spraying device, namely the number of the sub-patterns to be jet-printed is less than or equal to N; the number of the nozzles participating in the collaborative jet printing in the N nozzles is consistent with the number of the sub-patterns needing to be jet printed, and the control part distributes the corresponding sub-patterns needing to be jet printed for each nozzle participating in the collaborative jet printing; each nozzle participating in the cooperative jet printing prints the distributed sub-patterns under the control of the control part, wherein the projection boundaries of the flight tracks of the charged ink drops of the two nozzles for printing the adjacent sub-patterns on the projection plane are collinear, and the areas in the projection boundaries do not coincide with each other; or the projection boundaries of the flight paths of the charged ink drops of the two nozzles for jetting and printing the adjacent sub-patterns on the projection surface are equidistantly spaced, and the areas of the projection boundaries do not coincide with each other.

The projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field.

In an embodiment, the projections of the virtual ejection points of all the nozzles participating in the coordinated jet printing on the projection plane coincide with each other, as shown in fig. 8a, 8b, and 8 c. In another embodiment, the projections of the virtual output points of all the nozzles participating in the coordinated jet printing on the projection plane may not coincide, but the projections of the virtual output points of two nozzles jetting adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, as shown in fig. 9, or the projections of the virtual output points of two nozzles jetting adjacent sub-patterns on the projection plane are spaced in a manner consistent with the equidistant spacing. In a further embodiment, the projections of the virtual output points of all the nozzles participating in the coordinated jet printing on the projection plane may partially coincide. The intersection point of the flight path of the charged ink drop with the minimum deflection amplitude of one spray head and the extension intersection of the straight line part of the flight path of the charged ink drop with the maximum deflection amplitude under the deflection electric field is called as a virtual ejection point. In addition, the projections of the virtual output points of all or part of the nozzles participating in the cooperative jet printing on the projection plane are not coincident, but when the projections of the virtual output points of the two spray heads for spraying and printing the adjacent sub-patterns on the projection plane are both positioned on the collinear projection boundary, the projections of the virtual ejection points of the two nozzles for ejecting the adjacent sub-patterns on a plane perpendicular to the moving direction of the printing stock can be on a line parallel to the moving surface of the bearing object or not on a line parallel to the moving surface of the bearing object, the projections of the virtual output points of the two nozzles for spraying and printing the adjacent sub-patterns on a plane perpendicular to the moving direction of the printing stock can be on a line parallel to the moving surface of the bearing object, so that the projections of the virtual output points of the two nozzles for spraying and printing the adjacent sub-patterns on the plane perpendicular to the moving direction of the printing stock are equal in height relative to the moving surface of the bearing object.

Fig. 8a shows a projection schematic of a virtual ejection point on a projection plane and a projection schematic of a flight trajectory of a charged ink droplet on the projection plane when two nozzles perform cooperative jet printing, in fig. 8a, a lower part of a sub-pattern jetted by a first nozzle corresponds to the charged ink droplet with a small deflection amplitude, and an upper part of the sub-pattern jetted by the first nozzle corresponds to the charged ink droplet with a large deflection amplitude; the lower part of the sub-pattern jetted by the second nozzle corresponds to the charged ink drop with small deflection amplitude, and the upper part of the sub-pattern jetted by the second nozzle corresponds to the charged ink drop with large deflection amplitude, in the case shown in fig. 8a, the flying tracks of the charged ink drops with the minimum deflection amplitude of the two nozzles are collinear on the projection plane, and of course, the flying tracks of the charged ink drops with the minimum deflection amplitude of the two nozzles can be equally spaced on the projection plane. Fig. 8a also shows a preferred embodiment in which the projections of the virtual output points of the two spray heads onto a plane perpendicular to the direction of movement of the printing material coincide. It will be understood by those skilled in the art that the projections of the virtual output points of the two nozzles on a plane perpendicular to the direction of movement of the substrate may also be non-coincident, as long as the projections of the virtual output points of the two nozzles on a plane perpendicular to the direction of movement of the substrate are on the collinear projection boundaries, as shown in fig. 9. Similarly, when the flight paths of the charged ink droplets with the minimum deflection amplitude of the two nozzles are equally spaced on the projection plane, the projections of the virtual ejection points of the two nozzles on a plane perpendicular to the moving direction of the printing material may be on a line parallel to the moving surface of the carrier or not. In addition, as can be understood by those skilled in the art, the lower part of the sub-pattern printed by the first nozzle corresponds to the charged ink drop with small deflection amplitude, and the upper part of the sub-pattern printed by the first nozzle corresponds to the charged ink drop with large deflection amplitude; the upper part of a sub-pattern which is jetted and printed by the second nozzle corresponds to the charged ink drop with large deflection amplitude, and the lower part of the sub-pattern which is jetted and printed by the second nozzle corresponds to the charged ink drop with small deflection amplitude; or the lower part of the sub-pattern jetted by the first jet corresponds to the charged ink drop with large deflection amplitude, and the upper part of the sub-pattern jetted by the first jet corresponds to the charged ink drop with small deflection amplitude; the upper part of the sub-pattern jetted by the second jet head corresponds to the charged ink drop with large deflection amplitude, and the lower part of the sub-pattern jetted by the second jet head corresponds to the charged ink drop with small deflection amplitude.

Fig. 8b shows a projection schematic of a virtual ejection point on a projection plane and a projection schematic of a flight trajectory of a charged ink droplet on the projection plane when three nozzles perform coordinated jet printing, in fig. 8b, the lower part of a sub-pattern jetted by a first nozzle corresponds to the charged ink droplet with a small deflection amplitude, and the upper part of the sub-pattern jetted by the first nozzle corresponds to the charged ink droplet with a large deflection amplitude; the lower part of the sub-pattern sprayed and printed by the second sprayer corresponds to the charged ink drop with small deflection amplitude, and the upper part of the sub-pattern sprayed and printed by the second sprayer corresponds to the charged ink drop with large deflection amplitude; the lower part of a sub-pattern which is jetted and printed by the third nozzle corresponds to the charged ink drop with small deflection amplitude, and the upper part of the sub-pattern which is jetted and printed by the third nozzle corresponds to the charged ink drop with large deflection amplitude; in the case shown in fig. 8b, the flight trajectories of the respective charged ink droplets having the smallest deflection amplitudes in the first head and the second head are collinear on the projection plane. Fig. 8b also shows a preferred embodiment in which the projections of the virtual output points of two spray heads which spray print adjacent sub-patterns onto a plane perpendicular to the direction of movement of the substrate coincide. It will be appreciated by those skilled in the art that the projections of the virtual output points of the two nozzles that jet print adjacent sub-patterns on a plane perpendicular to the moving direction of the printing material may not coincide, as long as the projections of the virtual output points of the two nozzles that jet print adjacent sub-patterns on a plane perpendicular to the moving direction of the printing material are on the collinear projection boundary, as shown in fig. 9. Similarly, the projections of the virtual ejection points of the two nozzles for ejecting the adjacent sub-patterns on a plane perpendicular to the moving direction of the printing stock can be on a line parallel to the moving surface of the bearing object or not.

Fig. 8c shows a projection schematic of a virtual ejection point on a projection surface and a projection schematic of a flight path of a charged ink droplet on the projection surface when four nozzles cooperatively jet. As can be seen from the above description, when the four nozzles are used for coordinated jet printing, the projection of the virtual ejection point on the projection plane or the projection of the flight path of the charged ink droplets on the projection plane may also adopt other configurations or arrangements, such as the misalignment and equidistant arrangement described above.

Fig. 9 shows a projection schematic of a virtual ejection point on a projection surface and a projection schematic of a flight path of a charged ink droplet on the projection surface when four nozzles cooperatively eject. In fig. 9, the projections of the virtual ejection points of the two nozzles that jet print adjacent sub-patterns on a plane perpendicular to the direction of movement of the substrate are on the collinear projection boundaries. As can be seen from the above description, the projection of the virtual ejection point on the projection surface or the projection of the flight path of the charged ink droplets on the projection surface when the four nozzles cooperatively perform jet printing may also take other configurations or arrangements, such as the aforementioned equidistant arrangement.

Although fig. 8a, 8b and 8c respectively show examples in which two nozzles participate in the collaborative jet printing, three nozzles participate in the collaborative jet printing and four nozzles participate in the collaborative jet printing, and fig. 9 shows an example in which four nozzles participate in the collaborative jet printing, it is understood that the number of nozzles participating in the collaborative jet printing may be more, for example, five or six. Accordingly, the number of the nozzles included in the code spraying device is not limited to four, and may be five, six or more.

In an embodiment, when the number of the sub-patterns to be printed is greater than 2, and the projection boundaries of the flight trajectories of the charged ink droplets of the two nozzles for printing the adjacent sub-patterns on the projection plane are equidistantly spaced, the equidistance of the two nozzles of different adjacent sub-patterns may be different or the same.

In one embodiment, the equal spacing of the projected boundaries of the flight paths of the charged ink droplets of the two nozzles printing adjacent sub-patterns on the projection surface is suitable for the case where there are blank areas between the adjacent printed sub-patterns, such as the pattern shown in fig. 3 by the combination of "E1" and "E2" in the longitudinal direction. The projection of the equal distance on the printing surface is not larger than the blank space between the adjacent sub-patterns of the jet printing.

In an embodiment, the control part may further select the nozzles participating in the coordinated jet printing based on the number of the sub-patterns to be jet printed, where the number of the selected nozzles is consistent with the number of the sub-patterns to be jet printed.

The N nozzles can be arranged in the front and back direction along the moving direction of the printing stock. The nozzles participating in the collaborative jet printing can be nozzles sequentially selected according to the number consistent with the number of the sub-patterns needing to be jet printed, or can be nozzles non-sequentially selected according to the number consistent with the number of the sub-patterns needing to be jet printed. The projection boundary of the flying track of the charged ink drop corresponding to the N nozzles on the projection surface can be fixed, and can also be adjusted before jet printing.

As shown in fig. 6, each head includes a nozzle 11, a charging section, a deflecting electrode including a negative deflecting electrode plate 14 and a positive deflecting electrode plate 15, and a recovery section 16. The nozzle 11 is used for ejecting continuous and uniform ink droplets at a certain pressure; the negative deflection electrode plates 14 and the positive deflection electrode plates 15 have the same potential and opposite polarity (if the potential of the negative deflection electrode plates 14 is-v, the potential of the positive deflection electrode plates 15 is + v), the negative deflection electrode plates 14 and the positive deflection electrode plates 15 are parallel to each other, and a deflection electric field is formed in the region between the negative deflection electrode plates 14 and the positive deflection electrode plates 15. When the nozzle performs the jet printing work, the nozzle 11 ejects continuous and uniform ink drops at a certain pressure under the control of the control part, the ink drops fly at a certain speed and firstly pass through the charging part, and when the ink drops pass through the charging part, the ink drops are charged or not charged under the control of the control part; the ink drops continuously fly after passing through the charging part and pass through a deflection electric field formed by the negative deflection electrode plate 14 and the positive deflection electrode plate 15, wherein when the charged ink drops fly through the deflection electric field formed by the negative deflection electrode plate 14 and the positive deflection electrode plate 15, the flight track can deflect and fall on the surface of a printing stock passing through under the spray head at a certain moving speed (the printing stock can move back and forth along the positive/negative direction), and the charged ink drops can fall on the corresponding position of the surface of the printing stock due to different deflection degrees of charged electric quantity so as to spray and print the distributed sub-pattern; when uncharged ink drops fly through the deflection electric field formed by the negative deflection electrode plate 14 and the positive deflection electrode plate 15, the flight trajectory does not deflect, and still flies along a straight line, and the uncharged ink drops fall into the recovery part 16 which is arranged right below the nozzle 11 and above the printing stock, are recovered by the recovery part 16, and reenter the ink system without falling on the printing surface of the printing stock.

The code spraying device adopting a plurality of nozzles for spraying and printing in coordination provided by the embodiment of the utility model leads the flying tracks of the charged ink drops of two nozzles for spraying and printing adjacent sub-patterns to be arranged on the projection surface at the same line or at equal intervals, and the areas in the projection boundary are not overlapped with each other, so that when the two spray heads for spraying and printing the adjacent sub-patterns spray and print the most end spraying and printing points at the joint positions of the adjacent sub-patterns, the flying tracks of the charged ink drops sprayed by the two spray heads for spraying and printing the adjacent sub-patterns are mutually parallel in the straight line part below the deflection electric field, even if the distance between the printing bearing surface and the spray heads is changed within a certain range due to factors such as vibration of equipment, size errors of printing stocks and the like, the spray printing patterns of all the spray heads cannot be overlapped or overlarge in distance, so that the multiple parts of the same spray printing pattern are tightly jointed, and the jointing effect is good.

The utility model provides a combined nozzle of a code spraying device adopting a plurality of nozzles to spray in coordination, which comprises N nozzles, wherein N is a natural number more than or equal to 2; the N nozzles are arranged along the movement direction of a printing stock, wherein the projection boundaries of the flight trajectories of the charged ink droplets of two nozzles of the N nozzles for jetting and printing adjacent sub-patterns on the projection plane are collinear, and the areas in the projection boundaries do not coincide with each other; or the projection boundaries of the flight paths of the charged ink drops of the two nozzles for jetting and printing the adjacent sub-patterns on the projection surface are equidistantly spaced, and the areas of the projection boundaries do not coincide with each other. The projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field. Reference is made to the preceding description, as well as to figures 6 to 10, for the contents of the composite spray head.

The embodiment of the utility model provides an adopt a plurality of shower nozzles to spout combination shower nozzle of sign indicating number device of seal in coordination through letting the flight orbit of the ink droplet that charges of two shower nozzles of adjacent sub-pattern of spout seal the projection boundary on the projection plane common line or equidistance interval, and the region in the projection boundary is mutual not coincident, thereby makes two shower nozzles of adjacent sub-pattern of spout seal when spouting the seal point of extreme in the hookup location department of adjacent sub-pattern, the flight orbit of the ink droplet that charges that spouts two shower nozzles of adjacent sub-pattern of spout seal is parallel to each other in the straight line part below the electric field that deflects, even factors such as vibrations of equipment and stock size result in the distance of holding the face and shower nozzle to change in certain extent, can not appear coincidence or the too big phenomenon of interval between the spout seal pattern of each shower nozzle either, consequently spout seal respectively a plurality of parts of the same pattern, the jointing effect is good.

In an embodiment, the utility model provides an adopt a plurality of shower nozzles to spout yard device that spouts seal in coordination when the concrete implementation, for the installation adjustment, the external dimension and the performance parameter of N shower nozzles are designed into the same to the projection of virtual departure point on the plane of projection coincides mutually, and the position that virtual departure point was projected on the plane of projection is the same, becomes appropriate angle between the axis of each nozzle, can refer to that shown in fig. 10a to 10d, so that the flight boundary that spouts the charging ink droplet of two shower nozzles of adjacent sub-pattern on the plane of projection can be accurate collineation or equidistant interval.

In an embodiment, the types of the N nozzles may be different or the same, for example, in a case that the N nozzles are four, the N nozzles may include an a-type nozzle, a B-type nozzle, a C-type nozzle, and a D-type nozzle, and the types of the a-type nozzle, the B-type nozzle, the C-type nozzle, and the D-type nozzle may be different or the same.

In another embodiment, the N nozzles may include N/2 downward nozzles of the entire type, wherein the projection boundaries of the flight trajectories of the charged ink droplets corresponding to the nozzles of the same type on the projection plane are in a left-right symmetric state. For example, the N heads include an a-type head and a B-type head, and the a-type head, the B-type head in the direction opposite to 180 degrees, and the a-type head in the direction opposite to 180 degrees are arranged along the moving direction of the printing material, that is, a projection boundary of a flight path of the charging ink droplet corresponding to the a-type head on the projection plane and a projection boundary of a flight path of the charging ink droplet corresponding to the a-type head in the direction opposite to 180 degrees on the projection plane are in a state of bilateral symmetry, and a projection boundary of a flight path of the charging ink droplet corresponding to the B-type head on the projection plane and a projection boundary of a flight path of the charging ink droplet corresponding to the B-type head in the direction opposite to 180 degrees on the projection plane are in a state of bilateral symmetry. When the shower nozzle is installed, the A-type shower nozzle (shown in figure 10 a) is installed in the direction opposite to 180 degrees (shown in figure 10D), and the D-type shower nozzle in the previous embodiment can be replaced by the A-type shower nozzle; similarly, a type B showerhead (shown in FIG. 10B) mounted 180 degrees opposite (shown in FIG. 10C) may be used in place of the type C showerhead of the previous embodiment. Therefore, only the A/B two types of spray heads are needed to be combined into the spray head combined by the code spraying device which is used for spraying and printing the same pattern by two, three and four spray heads in a coordinated mode. On the basis, a person skilled in the art can add the spray heads on the foremost side or the rearmost side of the 4 spray heads, expand the 4 combined spray heads into 5 combined spray heads as long as the structure of the 4 spray heads is not damaged, and the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A combined spray head of a code spraying device adopting a plurality of spray heads to spray in coordination is characterized by comprising N spray heads, wherein N is a natural number more than or equal to 2; the N nozzles are arranged along the moving direction of a printing stock, wherein the projection boundaries of the flight tracks of the charged ink drops of two nozzles of the N nozzles for jetting and printing adjacent sub-patterns on the projection plane are collinear or spaced at equal intervals, and the areas in the projection boundaries do not coincide with each other; the projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field.

2. The composite head as claimed in claim 1, wherein the N heads include a plurality of types of heads, the number of types of the plurality of types is at least N/2 rounded down, and the projection boundaries of the flight paths of the charged ink droplets corresponding to the heads of the same type on the projection plane are in a state of bilateral symmetry.

3. The composite head as claimed in claim 2, wherein the plurality of types of heads include a-type heads and B-type heads, and the a-type heads, the B-type heads, the anti-180 degree B-type heads and the anti-180 degree a-type heads are arranged along the moving direction of the printing material, wherein the projected boundaries of the flying trajectories of the charged ink droplets of two heads of the a-type heads and the B-type heads, which jet the adjacent sub-patterns, on the projection plane are in common or spaced at equal intervals, and the areas within the projected boundaries do not coincide with each other.

4. The composite showerhead of claim 1, wherein the N showerhead has the same outer dimensions and performance parameters.

5. The composite head of claim 1, wherein the projections of the virtual ejection points of all the heads in the N heads in the coordinated printing on the projection plane coincide, and an intersection point where the flight path of the charged ink droplet with the smallest deflection amplitude of one head and the extension of the straight line part of the flight path of the charged ink droplet with the largest deflection amplitude under the deflection electric field intersect is called the virtual ejection point of the head.

6. The combined nozzle according to claim 1, wherein the projections of the virtual ejection points of all the nozzles in the N nozzles, which are involved in the coordinated printing, on the projection plane are not overlapped or partially overlapped, but the projections of the virtual ejection points of the two nozzles in the adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, or the projections of the virtual ejection points of the two nozzles in the adjacent sub-patterns on the projection plane are spaced in a manner consistent with the equidistant spacing, wherein the intersection point of the extension of the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the straight line part of the flight trajectory of the charged ink droplet with the largest deflection amplitude under the deflection electric field is called the virtual ejection point of the nozzle.

7. The combined nozzle according to claim 1, wherein when the projections of the virtual ejection points of all or some of the N nozzles involved in the coordinated printing on the projection plane do not coincide, but the projections of the virtual ejection points of the two nozzles of the adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, the projections of the virtual ejection points of the two nozzles of the N nozzles of the adjacent sub-patterns on a plane perpendicular to the moving direction of the printing material are on a line parallel to the moving surface of the carrier, and an intersection point where the flight trajectory of the charged ink droplet with the smallest deflection amplitude of one nozzle and the flight trajectory of the charged ink droplet with the largest deflection amplitude intersect in a linear portion below the deflection electric field is called the virtual ejection point of the nozzle.

8. The combined nozzle according to claim 1, wherein when the projections of the virtual ejection points of all or some of the N nozzles involved in the coordinated printing on the projection plane do not coincide, but the projections of the virtual ejection points of the two nozzles of the adjacent sub-patterns on the projection plane are both located on the collinear projection boundary, the projections of the virtual ejection points of the two nozzles of the N nozzles of the adjacent sub-patterns on a plane perpendicular to the moving direction of the printing material are not on a line parallel to the moving surface of the carrier, and an intersection point of the extension of the flight path of the charged ink droplet with the smallest deflection amplitude of one nozzle and the extension of the flight path of the charged ink droplet with the largest deflection amplitude under the linear part of the deflection electric field is called the virtual ejection point of the nozzle.

9. A code spraying device adopting a plurality of nozzles to spray in coordination is characterized by comprising a combined nozzle and a control part, wherein the combined nozzle comprises N nozzles arranged along the moving direction of a printing stock, and N is a natural number more than or equal to 2; the control part divides the pattern to be jet-printed on the printing bearing surface of the printing stock along the vertical direction of the movement direction of the printing stock to obtain the sub-patterns to be jet-printed, wherein the number of the sub-patterns to be jet-printed is less than or equal to N; the number of the nozzles participating in the collaborative jet printing in the N nozzles is consistent with the number of the sub-patterns needing to be jet printed, and the control part distributes the corresponding sub-patterns needing to be jet printed for each nozzle participating in the collaborative jet printing; each nozzle participating in the cooperative jet printing prints the distributed sub-patterns under the control of the control part, wherein the projection boundaries of the flight tracks of the charged ink drops of the two nozzles for printing the adjacent sub-patterns on the projection plane are in common line or at equal intervals, and the areas in the projection boundaries do not coincide with each other; the projection surface is a plane perpendicular to the moving direction of the printing stock, and the projection boundary of the flight path of the charged ink drop on the projection surface is a straight line part of the flight path of the charged ink drop with the minimum deflection amplitude below the deflection electric field or a straight line part of the flight path of the charged ink drop with the maximum deflection amplitude below the deflection electric field.

10. A code spraying device according to claim 9, wherein the combined spray head adopts a combined spray head as claimed in any one of claims 1 to 8.

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