CN114347657B - Variable space density type multicolor ink array electric jet printing head and control method thereof - Google Patents
Variable space density type multicolor ink array electric jet printing head and control method thereof Download PDFInfo
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- CN114347657B CN114347657B CN202111623422.0A CN202111623422A CN114347657B CN 114347657 B CN114347657 B CN 114347657B CN 202111623422 A CN202111623422 A CN 202111623422A CN 114347657 B CN114347657 B CN 114347657B
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Abstract
The invention discloses a variable space density multi-color ink array electro-jet printing head and a control method thereof. The variable space density multicolor ink array electric spray printing head comprises a plurality of spray head containers, a plurality of electric spray printing heads, a cross beam, a plurality of translation modules, a switching module and a driving module; the electric spray printing head is connected with the spray head container body; a plurality of electronic injection printing heads are arranged in the nozzle container body, the top of the nozzle container body is connected with the translation module, and the bottom of the nozzle container body is connected with the switching module; the beam is connected with the translation module; the translation module is connected with the driving module; the switching module is used for driving the electronic injection printing head to rotate around the central axis of the nozzle container; the driving module is used for driving the translation module to translate in the cross beam. The invention has the advantages of avoiding the defect of single resolution of the array type electronic injection printing head, being convenient for assembling and unloading, being capable of switching different color inks for spray printing and avoiding the problem that the existing electrofluid power spray printing technology needs to repeatedly take the needle and fill the ink.
Description
Technical Field
The invention belongs to the technical field of electrofluid printing devices, and particularly relates to a variable space density type multicolor ink array electro-jet printing head and a control method thereof.
Background
The electrohydrodynamic jet printing is a non-contact, non-pressure and non-mask printing technology, mainly utilizes the electric field applied between electrojet printing head and base to drive charged fluid to make ejection, and can be used for jet-printing various materials of colour ink, high-molecular organic material, etc.
The electrojet printing head in the prior electrohydrodynamic jet printing technology comprises a single electrojet printing head and an array. However, the distance between each two electronic injection printing heads in the array type electronic injection printing heads is fixed, the distance between the electronic injection printing heads cannot be adjusted according to different printing targets, and the resolution ratio cannot be adjusted for printing; the single-jet printing head can only jet ink with one color, and if the function of printing a plurality of types of ink simultaneously is realized, a mode of combining a plurality of jet printing heads with a plurality of motion assemblies is required, so that the complexity and the cost of equipment are increased.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the first objective of the present invention is to provide a variable spatial density type multi-color ink arrayed electro-jet printing head, and the second objective of the present invention is to provide a control method of the variable spatial density type multi-color ink arrayed electro-jet printing head, so as to achieve the effects of simultaneously printing multiple types of color inks and flexibly adjusting the spacing between the electro-jet printing heads.
In order to achieve the purpose, the invention adopts the following technical scheme:
a variable space density multi-color ink array electric spray printing head comprises a plurality of spray head containers, a plurality of electric spray printing heads, a cross beam, a plurality of translation modules, a switching module and a driving module; the number of the nozzle containing bodies is the same as that of the translation modules;
the electric spray printing head is provided with a nozzle, the electric spray printing head is connected with the nozzle container, and the nozzle is arranged outside the nozzle container;
a plurality of electronic injection printing heads are arranged in the nozzle container body, the top of the nozzle container body is connected with the translation module, and the bottom of the nozzle container body is connected with the switching module;
the beam is connected with the translation module and used for accommodating the translation module to translate;
the translation module is connected with the driving module and is used for driving the spray head containing body to translate;
the switching module is used for driving the electronic injection printing head to rotate around the central axis of the nozzle container;
the driving module is used for respectively driving the plurality of translation modules to translate in the cross beam.
Preferably, a plurality of electric injection printing heads are embedded in the nozzle container body; the top of the spray head container is provided with a plurality of hose holes, the hose holes are respectively connected with the corresponding electronic injection printing heads, and the hose holes are used for being connected into a pipeline for conveying color ink to the electronic injection printing heads.
Preferably, the translation module comprises a roller bearing and a pulley assembly;
the roller bearing is connected with the pulley assembly and is connected with the top of the spray head container;
and the pulley assembly is movably connected with the cross beam and is used for driving the roller bearing to move horizontally along the cross beam.
Further, the roller bearing comprises an upper base, a lower base and a vertical rod;
the upper base is connected with the pulley assembly; the upper base comprises an upper base outer ring, an upper base cylindrical roller and an upper base inner ring; the outer ring of the upper base is connected with the upper end of the vertical rod; the inner ring of the upper base is connected with the top of the spray head container; the upper base cylindrical roller is embedded between the upper base outer ring and the upper base inner ring;
the lower base is connected with the spray head container; the lower base comprises a lower base outer ring, a lower base cylindrical roller and a lower base inner ring; the outer ring of the lower base is connected with the lower end of the vertical rod; the inner ring of the lower base is connected with the middle part of the spray head container; the lower base cylindrical roller is embedded between the lower base outer ring and the lower base inner ring.
Furthermore, the pulley assembly comprises a ball axle wheel and a sliding block;
the bottom of the sliding block is connected with the upper base, and the top of the sliding block is connected with the ball shaft wheel;
the ball shaft wheel is connected with the cross beam and is used for rolling and translating on the cross beam;
the top of the sliding block is provided with a plurality of pipe holes, and the pipe holes are used for being connected with a pipeline for conveying color ink to the electronic injection printing head.
Preferably, the driving module comprises a fixing plate, a plurality of elastic ropes, a plurality of suspension arms, a plurality of thin steel strips and a wheel rotation assembly; the number of the elastic ropes, the number of the suspension arms and the number of the thin steel strips are equal;
the fixed plate is connected with the cross beam and is connected with one end of the elastic rope;
one end of the suspension arm is connected with the translation module, and the other end of the suspension arm is respectively connected with the other end of the elastic rope and one end of the thin steel strip;
the rotating component is connected with the other end of the thin steel strip and is used for driving the thin steel strip to shorten or lengthen.
Further, the wheel rotating assembly comprises a first motor, a rotating shaft and a plurality of cams;
the cam is connected with the rotating shaft at the circle center position, a gap connected with the thin steel strip is arranged in the radial direction of the cam, and the cam is used for driving the thin steel strip to shorten or lengthen through rotation;
the rotating shaft is connected with the first motor, and the rotating shaft is connected with a plurality of cams at equal intervals;
the first motor is used for driving the cam to rotate through the rotating shaft.
Preferably, the switching module comprises a second motor, a fixed rod, a feeding table, a third motor, a driving gear, a transmission belt, a plurality of switching gears, a driven gear and a screw rod; the number of the switching gears is equal to that of the nozzle containers;
the switching gear is arranged at the bottom of the nozzle container and used for driving the electronic injection printing head to rotate around the central axis of the nozzle container;
the inner side and the outer side of the transmission belt are both provided with teeth; the transmission belt is used for driving the switching gear to rotate, the teeth on the inner side of the transmission belt are respectively meshed with the driving gear and the driven gear, and the teeth on the outer side of the transmission belt correspond to the switching gear;
the driving gear is connected with a third motor, and the third motor is connected with the feeding table;
the driven gear is connected with the feeding table;
the second motor is connected with a screw rod, and the screw rod is in threaded connection with the feeding table; the fixed rod is connected with the feeding table in a sliding mode and is parallel to the screw rod.
A control method of a variable space density multi-color ink arrayed electro-jet print head includes the following steps:
the driving module acts according to different distances between the electric spraying printing heads set by each spraying printing, each translation module is driven to translate in the cross beam by a distance corresponding to the different distances between the electric spraying printing heads, each translation module drives the corresponding nozzle containing body, and then the driving module stops acting to lock the relative position of each nozzle containing body.
Preferably, after the driving module stops operating to lock the relative position of each nozzle container, the switching module starts operating to drive the electronic injection printing head in each nozzle container to rotate around the central axis by a set angle, so that the corresponding electronic injection printing head rotates to a specified position.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The driving module drives the plurality of nozzle containers to translate for different distances in space, so that flexible adjustment of the electronic jet printing head on the spatial distribution is realized, the defect of single resolution of the array electronic jet printing head is avoided, and printing scenes with different resolution requirements are met;
(2) The roller bearing and the pulley assembly are convenient to assemble and disassemble in the device, and parts are convenient to replace, so that the maintainability of equipment is improved;
(3) The switching module adopts a switching gear and motor control technical framework to realize the switching of the electronic injection printing heads, and when different color inks are injected into each electronic injection printing head, the color inks of various colors can be concentrated into one device, and the different color inks are automatically switched to the same position for spray printing, so that the problem of manual misoperation is avoided;
(4) The spray head container is provided with the multi-jet printing head and realizes the switching mode through the switching module, so that the problem that the needle needs to be repeatedly taken and the ink needs to be filled in the existing electrofluid power jet printing technology is solved, and the effect of long-time continuous jet printing is realized.
Drawings
FIG. 1 is a schematic diagram of the whole structure of the multi-color ink array electro-jet printhead of the variable space density type;
FIG. 2 is a schematic view of the ink in FIG. 1 entering an electrospray printhead portion;
FIG. 3 is a schematic view of a translation portion of the container of the showerhead of FIG. 1;
FIG. 4 is a schematic structural view of the cross beam of FIG. 1;
FIG. 5 is a schematic structural diagram of a part for realizing the function of jet printing in FIG. 1;
FIG. 6 is a right side view of the structure of FIG. 1 for limiting translation of the showerhead volume;
FIG. 7 is a schematic view of the portion of FIG. 1 that limits translation of the showerhead volume;
FIG. 8 is a schematic view of a translation portion of the container of FIG. 1;
FIG. 9 is a right side perspective view of the boom structure of FIG. 1;
FIG. 10 is a left side perspective view of the boom structure of FIG. 1;
FIG. 11 is a schematic structural view of the lower base of FIG. 1;
FIG. 12 is a schematic view of the sliding part of FIG. 1 in the slideway;
FIG. 13 is a schematic structural view of the upper base of FIG. 1;
FIG. 14 is a schematic view of the nozzle container and the electrospray printhead of FIG. 1 in a position of engagement;
FIG. 15 is a schematic diagram of the electrospray printhead of FIG. 1;
FIG. 16 is a schematic view of the cycle assembly of FIG. 1;
FIG. 17 is a schematic view of the cam of FIG. 16;
FIG. 18 is a schematic view of the rotating portion of the driven gear of FIG. 1;
FIG. 19 is a flow chart of a method of controlling a variable spatial density multi-color ink arrayed electro-jet printhead of FIG. 1;
in the figure: the device comprises a shell, a first connector, a second connector, a third connector, a hose, a beam, a pipe 7-running seam, a slideway 8, a fixing plate 9, a fixing hook 10, an elastic rope 11, a cantilever 12, a groove 13, a rope 14, a roller bearing 15, a pulley assembly 16, a lower base 18, a lower base outer ring 19, a lower base cylindrical roller 20, a lower base inner ring 21, a vertical rod 22, an upper base 23, a ball shaft wheel 24, a slider 25, an upper base outer ring 26, an upper base cylindrical roller 27, an upper base inner ring 28, a spray head container 29, a thin steel belt 29, a buckle 30, a wheel rotating assembly 31, a cam 32, a spacer ring nut 33, an upper shaft end 34, a lower spacer ring 35, a square shaft 36, a rotating shaft 37, a rotating shaft 38, a first motor 39, an ink separator plate 39, a hose hole 40, a hose hole 41, an electric spray nozzle 42, a print head 43, a second shaft end 44, a switching motor 45, a second shaft end 44, a feeding shaft, a driving gear 46-driven gear 47, a belt, a driving shaft 50-a driving gear 46-a driving gear 50, a screw rod 50, a driving gear and a screw rod 50.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the present disclosure, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item appearing before the word, includes the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Examples
As shown in fig. 1 to 18, the multi-color ink arrayed electro-jet printhead of the variable spatial density type of the present embodiment includes a housing 1, a first connector 2, a second connector 3, a third connector 4, a flexible tube 5, ten head containers, thirty electro-jet printheads, a beam 6, ten translation modules, a switching module, and a driving module. Three electrojet printing heads are embedded in each nozzle container body. The beam 6 is provided with a pipe running seam 7 and a slideway 8. Each translation module comprises a roller bearing 15 and a pulley assembly 16; the roller bearing 15 comprises a lower base 17, a lower base outer ring 18, a lower base cylindrical roller 19, a lower base inner ring 20, a vertical rod 21, an upper base 22, an upper base outer ring 25, an upper base cylindrical roller 26 and an upper base inner ring 27; the sliding assembly 16 includes a ball bearing wheel 23, a slider 24. The switching module comprises a second motor 43, a fixed rod 44, a feeding table 45, a third motor 46, a driving gear 47, a transmission belt 48, a switching gear 49, a driven gear 50 and a screw rod 51. The driving module comprises a fixing plate 9, a fixing hook 10, a spring rope 11, a cantilever 12, a groove 13, a spring rope hook 14, a thin steel strip 29, a buckle 30 and a wheel rotation assembly 31, wherein the wheel rotation assembly 31 comprises a cam 32, a spacing nut 33, an upper shaft end retainer ring 34, a lower shaft end retainer ring 35, a square shaft 36, a rotating shaft 37 and a first motor 38. The nozzle container 28 includes an ink baffle 39 and a hose hole 40. The electrospray printhead 41 is provided with an orifice 42.
As shown in fig. 1, 2, 3 and 4. The top of the shell 1 is provided with a first connector 2, a second connector 3 and a third connector 4, and the first connector 2, the second connector 3 and the third connector 4 are respectively correspondingly connected with three color inks with different colors sent from the outside. A plurality of hoses are connected to the first connector 2, and each hose 5 is connected to a different translation module. Correspondingly, the second connector 3 and the third connector 4 are respectively connected with the hose 5 in the same way, and in fig. 2, in order to avoid the unclear situation caused by the overlapping of lines, the figures describing the connection relationship between the second connector 3 and the hose 5 and the connection relationship between the third connector 4 and the hose 5 are omitted. The beam 6 is a hollow tubular structure and is connected to the top of the shell 1. The upper side surface of the beam 6 is provided with a pipe running seam 7 which is butted with the first connector 2, the second connector 3 and the third connector 4 and is used for connecting the hose 5 in a penetrating way. The lower side surface of the cross beam 6 is provided with a slideway 8 in a parallel rail shape, the translation module is movably connected with the slideway 8, and the translation module translates in the slideway 8 in a rolling mode. In the embodiment, one translation module is preferably fixed at the rightmost end of the slide rail 8 through screw connection, and the rest translation modules are arranged on the left side of the slide rail.
As shown in fig. 14 and 15. The nozzle container 28 is cylindrical, and the three electrospray print heads are uniformly embedded in the nozzle container 28. The outer side of the top of the nozzle container 28 is provided with threads, the inner side of the nozzle container is provided with an ink separating plate 39, the ink separating plate 39 is provided with hose holes 40 at positions corresponding to the three electronic injection printing heads respectively, and each hose hole 40 is connected to the hoses 5 of the first connector 2, the second connector 3 and the third connector 4 in an inserting mode so that different color inks can be injected into the electronic injection printing heads 41. The bottom of the electrojet printing head 41 is provided with a nozzle 42, and the nozzle 42 of the three electrojet printing heads and the central axis line of the nozzle container 28 mutually form an included angle of 120 degrees.
As shown in fig. 5, 11, 12 and 13. The upper half of the translation module is a slide assembly 16 and the lower half is a roller bearing 15. In the sliding assembly 16, the ball shaft wheel 23 is arranged on the slide rail 8 to perform rolling translation, the middle shaft of the ball shaft wheel 23 is connected to the top of the slide block 24, the slide block 24 is in a double-slope hollow structure, the slope on one side of the slide block is provided with three through holes, and the three through holes respectively correspond to the hoses 5 connected to the first connector 2, the second connector 3 and the third connector 4 so as to inject different color inks into the three electronic ink jet printing heads. The roller bearing 15 comprises an upper base 22, a lower base 17 and a central vertical rod 21. The bottom of the slider 24 is connected to the upper base 22. An upper base outer ring 25 of the upper base 22 is connected with the upper end of the vertical rod 21, threads are arranged on the inner side of an upper base inner ring 27, the upper base inner ring 27 is connected with the top of the spray head containing body 28 through the threads, and an upper base cylindrical roller 26 is embedded between the upper base outer ring 25 and the upper base inner ring 27 to form a bearing structure. The lower base 17 is connected to the lower end of a vertical rod 21. The lower base cylindrical roller 19 of the lower base 17 is fitted between the lower base outer ring 18 and the lower base inner ring 20 to form a bearing structure, and the lower base inner ring 20 is slidably connected to the middle of the head container 28.
As shown in fig. 6, 7, 8, 9, 10, 16, 17. One end of a fixing plate 9 of the driving module is connected with the cross beam 6, and the other end of the fixing plate is provided with a row of fixing hooks 10. The cantilever 12 is T-shaped, one end of the cantilever is fixedly connected with the lower base 17 through a screw, the left side of the other end of the cantilever is provided with a rope ejection hook 14, and the right side of the cantilever is provided with a groove 13. The two ends of the elastic rope 11 are respectively connected with a fixed hook 10 and an elastic rope hook 14. The groove 13 of the cantilever 12 is connected with a buckle 30, the buckle 30 is T-shaped, the left side of the buckle is clamped in the groove 13, and the right side of the buckle is connected with the left end of the thin steel belt 29. The right end of the thin steel strip 29 is connected with a cam 32 of the wheel rotating assembly 31. The wheel rotating assembly 31 comprises a cam 32, a spacing nut 33, an upper shaft end retainer 34, a lower shaft end retainer 35, a square shaft 36, a rotating shaft 37 and a first motor 38. A first motor 38 is attached to the top of the housing 1. The motor shaft of the first motor 38 passes through the housing 1 and is connected with the upper end of the rotating shaft 37, and the lower end of the rotating shaft 37 is movably connected with the bottom of the housing 1. The rotating shaft 37 is nested in the square shaft 36, and the square shaft 36 is respectively connected with the cam 32, the spacing nut 33, the upper shaft end retainer ring 34 and the lower shaft end retainer ring 35. On the square shaft 36, the cams 32 and the spacing nuts 33 are sequentially overlapped from bottom to top, so that the adjacent cams 32 are separated by one spacing nut 33, and the radius of each cam 32 from top to bottom can be preferably unequal or equal. Upper and lower end collars 34, 35 are provided at the uppermost and lowermost ends, respectively, for defining the position of the cam 32 and spacer nut 33 on the square shaft 36. The cam 32 is in the shape of a disk, the center of the disk is provided with a square through hole for inserting the square shaft 36, a gap is arranged in the radial direction of the disk to communicate with the square through hole, and the other end of the thin steel strip 29 is inserted into the gap for fixed connection. The radius of the disc increases in turn for each cam 32 from top to bottom. When the cam 32 rotates, the thin steel strip 29 is driven to shorten or lengthen, and the needle container 28 is driven to move left and right under the elastic force of the elastic rope 11. The cam 32 and the arm 12 are parallel to each other and correspond in height.
From the rightmost boom 12, the booms 12 are numbered in the range of 1-N, and the number of the corresponding cams 32 is N-1. The number of thin steel strips 29 is N-1, since the rightmost boom 12 is fixed to the beam 6 following the translation module. If the radius of the single cam 32 is set to R and the angle of counterclockwise rotation in plan view is set to θ, the length of the thin steel strip 29 shortened or lengthened during rotation is set to R · θ. If the nozzle containers 28 are initially distributed on the cross beam 6 at equal intervals, and the initial maximum interval of the central axes of the adjacent nozzle containers 28 is D, the central axes of the adjacent nozzle containers 28 are driven to move to the right, and then the interval is D-R · θ. In the same way, the number variation relation during left shift can be deduced, so that the effect of space density variation caused by left and right translation of the spray head container 28 is realized, and the multi-resolution printing function is realized.
As shown in fig. 1 and 18. The switching module comprises a second motor 43, a fixed rod 44, a feeding table 45, a third motor 46, a driving gear 47, a transmission belt 48, a switching gear 49, a driven gear 50 and a screw rod 51. The switching gear 49 is fixedly connected to the bottom of the nozzle container 28, and drives the electronic injection printing head 41 to switch around the central axis of the nozzle container 28 during rotation. The drive belt 48 has teeth on both the inner and outer sides thereof, the teeth on the outer side mesh with the switching gear 49 when the switching gear 49 needs to be rotated, and the teeth on the inner side mesh with the drive gear 47 and the driven gear 50, respectively. The driven gear 50 is provided inside the right end of the feeding table 45 and is movably connected to the feeding table 45. The driving gear 47 is disposed at the left end of the feeding table 45 and connected to the third motor 46, the third motor 46 is fixedly connected to the left end of the feeding table 45, and the motor shaft passes through the feeding table 45 and is connected to the driving gear 47. The feed table 45 is further connected with a screw rod 51 at the left side of the driving gear 47 in a threaded manner, one end of the screw rod 51 is connected with the second motor 43, and the other end of the screw rod 51 is movably connected with the rear side of the shell 1. The second motor 43 is connected to the front side of the housing 1. The feeding table 45 is further slidably connected to a fixed rod 44 on the right side of the driven gear 50, and front and rear ends of the fixed rod 44 are connected to front and rear sides of the housing 1, respectively. When the transmission belt 48 is required to be meshed with the switching gear 49, the second motor 43 rotates the screw rod 51 in one direction, so that the feeding table 45 is pushed to move towards the switching gear 49 until the switching gear 49 is meshed with the transmission belt 48, and when the feeding table is required to be disengaged, the second motor 43 rotates the screw rod 51 in the opposite direction.
With reference to the structure of the variable spatial density multi-color ink arrayed electro-jet printhead shown in fig. 1 to 18, as shown in fig. 19, the method for controlling the variable spatial density multi-color ink arrayed electro-jet printhead sequentially includes the following steps:
s1, setting the radius of the cam 32 at the uppermost position as r, setting the total number of n cams 32, numbering the cam 32 at the uppermost position as 1, setting the radius of each cam 32 from top to bottom as n r, setting the counterclockwise rotation of the cam 32 as the positive direction and the rotation angle as alpha in the overlooking view, setting the initial interval distribution of the nozzle containers 28 on the cross beam 6, setting the initial distance of the central axis as d, and aligning the initial positions of the gaps in the radial direction of the cams 32 to the front, wherein the number of the corresponding nozzle containers 28 is n +1;
s2, determining an electronic injection printing head 41 corresponding to the ink to be sprayed and printed, and calculating an angle alpha required to be rotated by the cam 32 after determining the distance between the central axes of the adjacent nozzle containers 28 according to a formula d-alpha.r; under the condition that the rotating angles of the cams 32 with different radiuses are the same, the space between the adjacent nozzle containers 28 is changed, and the effect of variable space density is achieved;
s3, inputting a control signal to the first motor 38 according to the calculated angle alpha, and enabling the first motor 38 to act to drive all the cams 32 to rotate by the corresponding angle alpha;
s4, the cam 32 drives the thin steel strip 29 to correspondingly shorten or lengthen the length by rotating, further drives the cantilever 12 to move leftwards or rightwards, and the cantilever 12 pushes the spray head containing body 28 to translate for a distance of alpha r, so that the distance between the adjacent spray head containing bodies 28 is changed into d-alpha r;
s5, inputting a control signal to the first motor 38, and stopping the first motor 38 to operate to lock the cam 32 so that the spray head container 28 cannot move;
s6, determining whether the electronic injection printing head 41 corresponding to the color ink required to be subjected to jet printing is aligned to the position required to be subjected to jet printing;
if yes, electrifying the electric spray printing head 41 to start spray printing; if not, executing the next step;
s7, inputting a control signal to the second motor 43 to enable the second motor 43 to act to rotate the screw rod 51, further driving the feeding table 45 to move towards the spray head containing body 28 until the transmission belt 48 is meshed with the switching gear 49, and then inputting a control signal to the second motor 43 to enable the second motor 43 to stop acting;
s8, inputting a control signal to the third motor 46, enabling the third motor 46 to act to rotate the driving gear 47, enabling the driving gear 47 to transmit power to the switching gear 49 through the transmission belt 48, driving the switching gear 49 to rotate around the central axis of the nozzle accommodating body 28 by a set angle beta, inputting the control signal to enable the third motor 46 to stop acting, enabling the switching gear 49 to be locked, enabling the electronic jet printing head 41 corresponding to the color ink required to be jetted to be aligned to the position required to be jetted, and then electrifying the electronic jet printing head 41 to start jet printing.
Compared with the prior art, the embodiment has the advantages that: the driving module drives the plurality of nozzle containers 28 to translate different distances in space, so that flexible adjustment of the electronic jet printing head 41 in space distribution is realized, the defect of single resolution of the array electronic jet printing head is avoided, and printing scenes with different resolution requirements are met; the roller bearing 15 and the pulley assembly 16 are convenient to assemble and disassemble in the device, and are convenient for replacing parts, so that the maintainability of the equipment is improved; the switching module adopts a switching gear 49 and an electric control technical framework to realize the switching of the electronic injection printing heads 41, and when different color inks are injected into each electronic injection printing head, the different color inks can be automatically switched at the same position for spray printing, so that the problem of manual misoperation is avoided; the nozzle container 28 is provided with the electronic injection printing head 41 and realizes the switching mode through the switching module, so that the problem that the needle needs to be repeatedly taken and the ink needs to be filled in the existing electrofluid power jet printing technology is solved, and the effect of continuously jet printing for a long time is realized.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. A variable space density type multi-color ink array electric spray printing head is characterized by comprising a beam, a plurality of nozzle containers, a plurality of electric spray printing heads, a plurality of translation modules, a switching module and a driving module; the number of the nozzle containing bodies is the same as that of the translation modules;
the electric spray printing head is provided with a nozzle, the electric spray printing head is connected with the nozzle container, and the nozzle is arranged outside the nozzle container;
the top of the spray head container is connected with the translation module, and the bottom of the spray head container is connected with the switching module;
the transverse beam is connected with the translation module and used for accommodating the translation module to translate;
the translation module is connected with the driving module and is used for driving the spray head containing body to translate;
the switching module is used for driving the electronic injection printing head to rotate around the central axis of the nozzle container;
the driving module is used for respectively driving the plurality of translation modules to translate in the beam;
the driving module comprises a fixing plate, a plurality of elastic ropes, a plurality of suspension arms, a plurality of thin steel strips and a wheel rotation assembly; the number of the elastic ropes, the number of the suspension arms and the number of the thin steel strips are equal;
the fixed plate is connected with the cross beam and is connected with one end of the elastic rope;
one end of the suspension arm is connected with the translation module, and the other end of the suspension arm is respectively connected with the other end of the elastic rope and one end of the thin steel strip;
the rotating assembly is connected with the other end of the thin steel strip and is used for driving the thin steel strip to shorten or lengthen;
the rotating component comprises a first motor, a rotating shaft and a plurality of cams;
the cam is connected with the rotating shaft at the position of the circle center, a gap connected with the thin steel strip is arranged in the radial direction of the cam, and the cam is used for driving the thin steel strip to shorten or lengthen through rotation;
the rotating shaft is connected with the first motor, and the rotating shaft is connected with a plurality of cams at equal intervals;
the first motor is used for driving the cam to rotate through the rotating shaft.
2. The variable spatial density multi-color ink arrayed electro-jet printhead of claim 1, wherein a plurality of electro-jet printheads are fitted inside the head container; the top of the spray head container is provided with a plurality of hose holes, the hose holes are respectively connected with the corresponding electronic injection printing heads, and the hose holes are used for being connected into pipelines for conveying color ink to the electronic injection printing heads.
3. The variable spatial density multi-color ink arrayed electro-jet print head of claim 1, wherein the translation module comprises a roller bearing and a pulley assembly;
the roller bearing is connected with the pulley assembly and is connected with the top of the spray head container;
and the pulley assembly is movably connected with the cross beam and is used for driving the roller bearing to translate along the cross beam.
4. The variable spatial density multi-color ink arrayed electro-jet print head of claim 3, wherein the roller bearing comprises an upper base, a lower base, a vertical post;
the upper base is connected with the pulley assembly; the upper base comprises an upper base outer ring, an upper base cylindrical roller and an upper base inner ring; the outer ring of the upper base is connected with the upper end of the vertical rod; the inner ring of the upper base is connected with the top of the spray head containing body; the upper base cylindrical roller is embedded between the upper base outer ring and the upper base inner ring;
the lower base is connected with the spray head container; the lower base comprises a lower base outer ring, a lower base cylindrical roller and a lower base inner ring; the outer ring of the lower base is connected with the lower end of the vertical rod; the inner ring of the lower base is connected with the middle part of the spray head container; the lower base cylindrical roller is embedded between the lower base outer ring and the lower base inner ring.
5. The variable spatial density multi-color ink arrayed electro-jet print head of claim 4, wherein the pulley assembly comprises a ball-axle wheel, a slider;
the bottom of the sliding block is connected with the upper base, and the top of the sliding block is connected with the ball shaft wheel;
the ball shaft wheel is connected with the cross beam and is used for rolling and translating on the cross beam;
the top of the sliding block is provided with a plurality of pipe holes, and the pipe holes are used for being connected with a pipeline for conveying color ink to the electronic injection printing head.
6. The variable spatial density multi-color ink arrayed electro-jet printhead of claim 1, wherein the switching module comprises a second motor, a fixed rod, a feed table, a third motor, a driving gear, a driving belt, a plurality of switching gears, a driven gear, a lead screw; the number of the switching gears is equal to that of the nozzle containers;
the switching gear is arranged at the bottom of the nozzle container and used for driving the electronic injection printing head to rotate around the central axis of the nozzle container;
the inner side and the outer side of the transmission belt are both provided with teeth; the transmission belt is used for driving the switching gear to rotate, the teeth on the inner side of the transmission belt are respectively meshed with the driving gear and the driven gear, and the teeth on the outer side of the transmission belt correspond to the switching gear;
the driving gear is connected with a third motor, and the third motor is connected with the feeding table;
the driven gear is connected with the feeding table;
the second motor is connected with a screw rod, and the screw rod is in threaded connection with the feeding table; the fixed rod is connected with the feeding table in a sliding mode, and the fixed rod is parallel to the screw rod.
7. The method for controlling a multi-color ink arrayed electro-jet print head of a variable spatial density type according to any one of claims 1 to 6, comprising the steps of:
the driving module acts according to different distances between the electric spraying printing heads set by each spraying printing, each translation module is driven to translate in the cross beam by a distance corresponding to the different distances between the electric spraying printing heads, each translation module drives the corresponding nozzle containing body, and then the driving module stops acting to lock the relative position of each nozzle containing body.
8. The method of claim 7 further comprising the step of switching the electrospray printhead, specifically:
after the driving module stops acting to lock the relative position of each spray head container, the switching module starts acting to drive the electric spray printing head in each spray head container to rotate by a set angle around the central axis, so that the corresponding electric spray printing head rotates to an appointed position.
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