CN114633562A - Orthogonal spray head electrostatic spraying system and method thereof - Google Patents
Orthogonal spray head electrostatic spraying system and method thereof Download PDFInfo
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- CN114633562A CN114633562A CN202210167910.3A CN202210167910A CN114633562A CN 114633562 A CN114633562 A CN 114633562A CN 202210167910 A CN202210167910 A CN 202210167910A CN 114633562 A CN114633562 A CN 114633562A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/145—Arrangement thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to the technical field of electrostatic spraying, and particularly relates to an orthogonal spray head electrostatic spraying system and a method thereof. The invention discloses an orthogonal spray head electrostatic spraying system and a method thereof, belonging to the technical field of electrostatic spraying. The device comprises a fixed liquid spray head, a movable liquid spray head, a receiving substrate, a real-time curing device, a computer and a high-voltage adjustable power supply, wherein the fixed spray head and the movable liquid spray head can spray the same or different liquids to form electrostatic jet, the movable substrate is used as a jet collecting device, and the real-time curing device can realize the real-time curing of the sprayed liquids as required; the invention can realize the complex three-dimensional pattern weaving function by controlling different motion modes of the movable spray nozzle and the substrate through the computer, and can also design the movable spray nozzle array to further improve the production efficiency or weave more complex three-dimensional patterns, thereby having strong practical value.
Description
Technical Field
The invention belongs to the technical field of electrostatic spraying, and particularly relates to an orthogonal spray head electrostatic spraying system and a method thereof.
Background
The electrostatic direct writing technology and the electrostatic spinning technology are two different modes of the electrostatic spraying technology, the electrostatic direct writing technology is widely applied to the aspects of high-precision printing electronic technology and the like, and the electrostatic spinning technology is also widely applied to the aspects of non-woven fabrics, biomedicine and the like. However, the electrostatic direct writing technology is currently limited to two-dimensional printing or simple three-dimensional structure direct printing, and the electrostatic spinning technology is limited to complex motions such as disordered swinging of jet flow, and both of them do not realize a three-dimensional interlacing complex pattern printing process as required in the textile industry. Both are usually limited to a single nozzle, and the commonly reported multi-nozzle technology is simply repeated for a single nozzle, and does not involve complicated relative motion design among the nozzles, so that more complicated three-dimensional patterns cannot be woven.
Disclosure of Invention
In order to solve the defects of the traditional electrostatic spraying system in the background technology, an orthogonal spray head electrostatic spraying system and a method thereof are provided, and the interweaving of warps and wefts and the structure of retaining rings are realized in the electrostatic spraying and printing technology or electrostatic spinning, so that a complex three-dimensional pattern is formed.
The invention adopts the following technical scheme: an orthogonal showerhead electrostatic spray system, comprising:
a nozzle array comprising at least one fixed liquid nozzle and at least one moving liquid nozzle; wherein the moving liquid spray head has at least one degree of freedom of vertical movement on a vertical plane;
the substrate is arranged below the spray head array; the substrate has at least one horizontal degree of freedom of movement in a horizontal plane;
during weaving, the movable liquid spray head and/or the substrate move according to a pre-generated motion mode, and the movable liquid spray head and/or the fixed liquid spray head jet according to a pre-generated spray mode to sequentially complete three-dimensional cross weaving required in a single unit.
By adopting the technical scheme, the movable liquid spray head and the movable substrate respectively realize the longitudinal movement and the transverse movement of the movable liquid spray head and the fixed liquid spray head on the substrate, the warp knitting and the weft knitting with the substrate as a base line are finished, and meanwhile, the complex three-dimensional pattern knitting is finished by controlling the movement modes of the movable liquid spray head and the movable substrate.
In a further embodiment, further comprising:
the high-voltage adjustable power supply is simultaneously electrically connected with the fixed liquid spray head and the movable liquid spray head; the high-voltage adjustable power supply is arranged to respectively control the fixed liquid spray head and the movable liquid spray head to generate electrostatic spraying;
the real-time curing device is arranged above the substrate; the real-time curing device is arranged to perform curing treatment on the liquid generated by the electrostatic spraying according to requirements;
the three-dimensional mobile positioning device is in transmission connection with the real-time curing device; the three-dimensional moving positioning device is arranged to drive the real-time curing device to move on the X, Y, Z shaft and complete the positioning at the designated position, and further complete the curing of the jet flow in the air.
By adopting the technical scheme, the high-voltage adjustable power supply respectively controls the movable liquid spray head and the fixed liquid spray head to spray the same or different liquids according to the weaving requirement so as to form electrostatic jet. Meanwhile, the real-time curing device realizes high-precision fixed-point real-time curing of the sprayed liquid according to weaving requirements. And the real-time curing device can move and position on an X, Y, Z axis under the action of the three-dimensional moving and positioning device, namely, the jet liquid is cured on a substrate or in the air according to the knitting requirement, so that a three-dimensional structure is conveniently formed without completely depending on the high viscosity of the liquid to obtain the three-dimensional structure.
In a further embodiment, further comprising:
the first power source is in transmission connection with the movable liquid spray head;
the second power source is in transmission connection with the base;
the control device is electrically connected to the first power source and the second power source; and after receiving the instruction of the control device, the first power source and the second power source respectively drive the movable liquid spray head and the substrate to move according to a preset track.
By adopting the technical scheme, the first power source is used for driving the movable liquid spray head to reciprocate periodically in the longitudinal direction so as to complete unit-by-unit warp knitting on the substrate; the second power source is used for driving the substrate to do reciprocating periodic motion in the transverse direction relative to the fixed liquid spray head so as to realize unit-by-unit weft weaving of the fixed liquid spray head on the substrate.
In a further embodiment, the real-time curing device is at least one of heat curing, laser curing, ultraviolet curing or flash lamp curing.
By adopting the technical scheme, the damage to the three-dimensional shape by liquid fusion is avoided.
A method of using an orthogonal showerhead electrostatic spray system as described above, comprising the steps of:
step one, receiving an injection instruction of a current unit, and extracting instruction information;
secondly, selecting fixed liquid spray heads and movable liquid spray heads at required positions and in required quantity in the spray head array based on the instruction information; meanwhile, generating a corresponding movement mode and an injection mode based on the instruction information;
thirdly, based on the motion mode, respectively executing a moving instruction and/or a static instruction to the moving liquid spray head and the substrate;
respectively executing a spraying instruction and/or a pause instruction on the fixed liquid spray head and the movable liquid spray head based on the spraying mode; and the motion pattern and the spray pattern conform to a corresponding interaction pattern.
By adopting the technical scheme, based on the weaving requirement of the current unit, the corresponding moving modes are generated for the moving liquid spray head and the substrate, meanwhile, the corresponding spraying modes are generated for the fixed liquid spray head and the moving liquid spray head, and the complex three-dimensional pattern weaving is completed through the mutual moving matching and the spraying interaction.
In a further embodiment, the method further comprises the following steps:
if the adjacent injection commands are the same, keeping the current motion mode and the injection mode;
and if the adjacent injection instructions are different, updating the adjacent injection instructions to obtain updated instruction information, and generating a corresponding motion mode and an injection mode based on the updated instruction information.
By adopting the technical scheme, the method and the device are used for completing the switching of different weaving requirements of adjacent units.
In a further embodiment, the instruction information comprises: the desired weave pattern within the corresponding cell, and the spray paths and spray parameters required to spray the liquid, substrate and/or moving liquid spray head to complete the weave pattern. To realize the combination of different materials and patterns.
In a further embodiment, the movement patterns comprise at least the following patterns:
individual movement mode: one of the substrate and the moving liquid ejecting head is in a moving state at the same time node;
synchronous motion mode: on the same time node, the substrate and the movable liquid spray head are both in a moving state;
and switching between the individual motion mode and the synchronous motion mode.
In a further embodiment, the injection modes include at least the following modes:
individual injection mode: on the same time node, one of the fixed liquid spray head and the movable liquid spray head is in a spray state;
synchronous injection mode: on the same time node, the fixed liquid spray head and the movable liquid spray head are both in a spraying state;
and switching between the individual injection mode and the synchronous injection mode.
In a further embodiment, the interaction pattern comprises at least the following patterns:
the fixed liquid spray head is in a spraying state or a closing state based on the current movement state of the substrate;
based on the motion state of the current moving liquid spray head, the moving liquid spray head is in a spray state or a closed state.
In a further embodiment, the method further comprises the following steps:
and according to the knitting requirements, carrying out aerial or substrate real-time curing treatment on the liquid jet by using a real-time curing device, wherein the real-time curing device is electrically connected with a computer and is also in transmission connection with a three-dimensional mobile positioning device, and the three-dimensional mobile positioning device is arranged to drive the real-time curing device to move on an X, Y, Z axis and complete positioning at a specified position. The invention has the beneficial effects that: the invention realizes the complex three-dimensional pattern weaving function by controlling different motion modes of the movable spray nozzle and the substrate through the computer, and can also design the movable spray nozzle array to further improve the production efficiency or weave more complex three-dimensional patterns, thereby having strong practical value.
Drawings
Fig. 1 is a schematic structural diagram of an orthogonal showerhead electrostatic spraying system of embodiment 1.
Fig. 2 is a schematic knitting diagram of an orthogonal nozzle electrostatic spraying method of embodiment 3.
Fig. 3 is a schematic knitting diagram of an orthogonal nozzle electrostatic spraying method of embodiment 4.
Each of the labels in fig. 1 is: the device comprises a fixed liquid spray head 1, a movable liquid spray head 2, a substrate 3, a real-time curing device 4, a high-voltage adjustable power supply 5 and a computer 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings in combination with specific embodiments. It should be noted that the terms "upper", "lower", "left" and "right" used in the following description refer to the reference direction of the substrate in fig. 1.
At present, with the deep development of the printing electronic technology, the practical requirements for printing the complex three-dimensional patterns appear. For example, it is required to print a three-dimensional buckle structure by using a hard material with a very high young modulus to form a molding effect similar to "chain mail" and realize macroscopic deformability of a microscopic brittle and hard material. This requirement cannot be achieved using either conventional electrostatic direct write or electrospinning techniques.
Example 1
The embodiment provides an orthogonal nozzle electrostatic spraying system, which realizes the interweaving of warps and wefts and a buckle structure in an electrostatic spraying and printing technology or electrostatic spinning, forms a complex three-dimensional pattern and has high practical value.
As shown in fig. 1, an orthogonal showerhead electrostatic spray system includes: a nozzle array and a substrate 3. Wherein the nozzle array comprises: at least one fixed liquid spray head 1 and at least one moving liquid spray head 2, and the moving liquid spray head 2 has at least one vertical moving freedom degree on a vertical surface, namely the moving liquid spray head 2 can do reciprocating motion in the longitudinal direction. It should be noted that the number of the fixed liquid nozzles 1 and the movable liquid nozzles 2 may be plural, and the number of the nozzles required for weaving and the nozzles at the required positions are selected to form a plurality of subarray whole bodies or independently cooperate with the substrate 3 to perform more complex relative motion according to weaving requirements, so as to improve production efficiency or weave more complex three-dimensional patterns.
In a further embodiment, the substrate 3 is arranged below the array of nozzles, and the substrate 3 has at least one horizontal freedom of movement in a horizontal plane; in other words, the substrate 3 can reciprocate in the lateral direction. In this embodiment, the fixed liquid nozzle 1 and the movable liquid nozzle 2 are used for generating electrostatic spray to spray the same or different liquids to form electrostatic jet, and the substrate 3 is used as a jet device for collecting the jet generated by the nozzles.
During weaving, the movable liquid spray head 2 and/or the substrate 3 move according to a pre-generated motion mode, and simultaneously the movable liquid spray head 2 and/or the fixed liquid spray head 1 jet according to a pre-generated spray mode, so that three-dimensional cross weaving required in a single unit is completed in sequence.
In a further embodiment, the movement pattern comprises at least: individual movement mode: at the same time node, one of the substrate 3 and the moving liquid ejection head 2 is in a moving state; this mode is suitable for the case where knitting can be completed only by moving the substrate 3 or moving the liquid ejecting head 2 according to knitting requirements, for example: the substrate 3 is in a moving state and the moving liquid ejection head 2 is in a stationary state.
Synchronous motion mode: on the same time node, the substrate 3 and the movable liquid spray head 2 are both in a moving state; this mode is suitable for the case where the substrate 3 and the moving liquid ejection head 2 need to be moved simultaneously according to weaving requirements. And switching between the individual motion mode and the synchronous motion mode.
In a further embodiment, the injection modes include at least the following modes:
individual injection mode: on the same time node, one of the fixed liquid spray head 1 and the movable liquid spray head 2 is in a spraying state; this mode is applicable to the condition that according to weaving the demand, choose to fix liquid nozzle 1 or remove liquid nozzle 2 and spray, exemplifies: when the fixed liquid spray head 1 is in a spraying state, the movable liquid spray head 2 is in a closed working state; or vice versa.
Synchronous injection mode: on the same time node, the fixed liquid spray head 1 and the movable liquid spray head 2 are both in a spraying state; this mode is then applicable to according to weaving the demand, chooses for use fixed liquid nozzle 1 and removes the condition that liquid nozzle 2 jetted simultaneously. And switching between the individual injection mode and the synchronous injection mode.
And the above-mentioned spray pattern and movement pattern accord with the interaction pattern, wherein, the interaction pattern includes the following pattern at least:
the fixed liquid ejection head 1 is in an ejection state or an off state based on the current state of movement of the substrate 3;
based on the motion state of the currently moving liquid ejection head 2, the moving liquid ejection head 2 is in an ejection state or an off state.
It is further shown that, according to the weaving requirements, the base 3, the fixed liquid ejecting head 1 and the mobile liquid ejecting head 2 will satisfy the following conditions:
when the substrate 3 is in a static state, the fixed liquid spray head 1 is in a spraying state or a closing state; or the substrate 3 is in a moving state, the fixed liquid ejection head 1 is in an ejection state or an off state.
Similarly, when the mobile liquid nozzle 2 is in a static state, the mobile liquid nozzle is in a spraying state or a closing state; or the moving liquid ejection head 2 is in a moving state, it is in an ejection state or an off state itself. The two types of movement and ejection are interactively defined by the interaction mode.
In order to better control the spraying state of the moving liquid spray head 2 and/or the fixed liquid spray head 1, the embodiment further comprises: and a high voltage adjustable power supply 5 electrically connected to the fixed liquid spray head 1 and the movable liquid spray head 2, wherein the high voltage adjustable power supply 5 is configured to control the fixed liquid spray head 1 and the movable liquid spray head 2 to generate electrostatic spraying respectively. That is, the liquid ejecting apparatus not only controls the working states of the fixed liquid ejecting head 1 and the movable liquid ejecting head 2, but also controls the types of the ejected liquids, and selects the same type of liquid ejection or different types of liquid ejection according to the requirements.
Based on the above description, due to the movement of the substrate 3, the fixed liquid ejection head 1 and the movable liquid ejection head 2 in the designated direction, the warp and the weft are overlapped with each other, and the liquid has a certain fluidity when being ejected, and if the liquid is not processed in time, the fluid jets will be fused with each other to destroy the structure at the overlapped part, so that the pattern is destroyed. Therefore, in order to solve the technical problem, the embodiment further includes a real-time curing device 4 disposed above the substrate; the real-time curing device 4 is configured to perform curing treatment on the liquid generated by electrostatic spraying as required, thereby avoiding damage to the three-dimensional shape due to liquid fusion. In a further embodiment, the real-time curing device 4 is precisely positioned and adjusted by the computer 6, so that the curing precision is improved.
In a further embodiment, the real-time curing device 4 may adopt, but is not limited to, a real-time curing method such as heat curing, laser curing, ultraviolet curing, flash lamp curing, and the like.
In a further embodiment, the real-time curing device 4 is in transmission connection with a three-dimensional moving positioning device, and the three-dimensional moving positioning device is configured to drive the real-time curing device to move on the X, Y, Z axis and complete positioning at a specified position, in this embodiment, the three-dimensional moving positioning device is a positioning device with high precision, such as a screw transmission or a rack-and-pinion transmission. If the real-time curing device selected at this time is a laser curing device, under the action of the three-dimensional moving and positioning device, the irradiation point of the laser curing device moves on the X, Y, Z axis as required, so that the curing treatment of the jet liquid on the surface of the substrate can be realized, and the curing treatment of the jet liquid above the substrate can also be realized. The jet can be solidified in the air, so that the three-dimensional structure can be conveniently formed, and the three-dimensional structure can be obtained without completely depending on the high viscosity of the liquid.
In another embodiment, the method further comprises: the first power source, the second power source and the electric connection are connected with the first power source and the second power source. Wherein the first power source is connected with the movable liquid spray head 2 in a transmission way, and the second power source is connected with the base 3 in a transmission way. After receiving the instruction of the control device, the first power source and the second power source respectively drive the movable liquid spray head 2 and the substrate 3 to move according to the preset track. In this embodiment, the predetermined trajectory is embodied in a motion pattern, and is generated according to the motion pattern. The concrete expression is as follows: the motion state and the moving trend of the substrate 3 and the moving liquid spray head 2 are as follows: the speed and phase difference of the motion between the two, and the motion period.
In this embodiment, the first power source and the second power source are both common power sources in the prior art, for example: screw-type drive mechanism. The control device is a computer 6 in the prior art, and therefore, will not be described herein.
Based on the structure, more movable spray heads and more real-time curing devices 4 capable of being accurately positioned are used for synchronous work so as to form more nestable complex three-dimensional pattern weaves; meanwhile, based on weaving requirements, a plurality of nozzles or a plurality of sub-arrays formed by partial nozzles in quantity and position are selected from the nozzle array and integrally or independently matched with the substrate 3 to perform more complex relative motion, so that the production efficiency is improved or more complex three-dimensional patterns are woven.
Example 2
The embodiment discloses a method of an orthogonal nozzle electrostatic spraying system, which is based on the system structure of the embodiment 1 and comprises the following steps:
step one, receiving an injection instruction of a current unit, and extracting instruction information; in this embodiment, the instruction information includes: the desired weave pattern within the corresponding cell, and the spray paths and spray parameters required to spray the liquid, substrate and/or moving liquid spray head to complete the weave pattern.
Further, the weaving pattern can be a buckle structure pattern, a classic textile pattern and the like; the following will exist for further determination of the injected liquid on demand: the liquid sprayed by the fixed liquid spray head is the same as or different from the liquid sprayed by the movable liquid spray head. The spray path refers to the movement locus, period and phase difference of the substrate or the moving liquid spray head in a predetermined direction.
Secondly, selecting fixed liquid spray heads and movable liquid spray heads at required positions and in required quantity in the spray head array based on the instruction information; meanwhile, generating a corresponding motion mode, a corresponding injection mode and a corresponding interaction mode based on the instruction information; different knitting patterns correspond to different injection instructions, so that extracted instruction information is different, fixed liquid spray heads and movable liquid spray heads which meet knitting requirements and are in a preset number and in a preset position need to be selected, and the generated motion mode and the generated injection mode are reacted on corresponding moving devices, namely step three is executed.
Thirdly, respectively executing a moving instruction and/or a static instruction to the moving liquid spray head and the substrate based on the motion mode;
respectively executing a spraying instruction and/or a pause instruction on the fixed liquid spray head and the movable liquid spray head based on the spraying mode; and the motion pattern and the spray pattern conform to a corresponding interaction pattern.
In step three, the motion modes at least include the following modes:
individual movement mode: one of the substrate and the moving liquid ejecting head is in a moving state at the same time node; synchronous motion mode: on the same time node, the substrate and the movable liquid spray head are both in a moving state; and switching between the individual motion mode and the synchronous motion mode.
The injection modes include at least the following modes: individual injection mode: on the same time node, one of the fixed liquid spray head and the movable liquid spray head is in a spray state; synchronous injection mode: on the same time node, the fixed liquid spray head and the movable liquid spray head are both in a spraying state; and switching between the individual injection mode and the synchronous injection mode.
The interaction modes include at least the following modes:
the fixed liquid spray head is in a spraying state or a closing state based on the current movement state of the substrate; based on the motion state of the current moving liquid spray head, the moving liquid spray head is in a spray state or a closed state. In other words, when the substrate is in a static state, the fixed liquid spray head is in a closed state; or when the movable liquid spray head is in a moving state, the movable liquid spray head is in a spraying state.
Based on the above description, if the desired weaving pattern of the adjacent cells is the same, the current motion mode and spray mode are maintained. For example, the following steps are carried out: the existing first unit and the second unit to be woven have the same patterns to be woven, so that after the weaving of the first unit is finished and before the weaving of the second unit is started, the motion mode and the injection mode are not changed, and the weaving of the second unit is directly started.
On the other hand, if the pattern portions of the adjacent cells to be knitted are the same, the updated command information is updated based on the adjacent injection commands, and the corresponding movement pattern and injection pattern are generated based on the updated command information. For example, the following steps are carried out: when a first unit and a second unit to be knitted exist, the knitting pattern of the first unit is a buckle structure pattern, and the pattern to be knitted of the second unit is a classical textile pattern, after the knitting of the first unit is completed, before the knitting of the second unit is started, the injection command related to the second unit needs to be received again, updated command information is obtained based on the injection command of the second unit, the motion mode and the injection mode related to the second unit are generated, and then the knitting of the second unit is started.
In another embodiment, in order to avoid the phenomenon of pattern overlapping damage caused by mutual fusion of fluid jets, the embodiment further comprises: and according to the knitting requirements, performing aerial or substrate real-time curing treatment on the liquid jet by using a real-time curing device, wherein the real-time curing device is electrically connected with a computer and is also in transmission connection with a three-dimensional mobile positioning device, and the three-dimensional mobile positioning device is arranged to drive the real-time curing device to move on an X, Y, Z axis and complete the positioning at the specified position. Namely, the three-dimensional moving device is used for realizing the movement and height positioning of the real-time curing device on a three-dimensional space. The real-time curing device adopts at least one mode of heating curing, laser curing, ultraviolet curing or flash lamp curing.
Example 3
This example further illustrates example 2 with respect to a woven buckle structure pattern.
As shown in fig. 2, the method of the orthogonal nozzle electrostatic spray system comprises the following steps:
s101, receiving an injection instruction of the current unit, namely, the pattern to be injected by the current unit is a buckle structure pattern, so that the extracted instruction information is as follows: the liquid spraying device comprises a retaining ring structure pattern, the type of liquid required by fixing the liquid spraying head, the type of liquid required by moving the liquid spraying head, a base, a spraying path of the moving liquid spraying head and spraying parameters.
Wherein the injection parameters are embodied as: moving the liquid spray head upwards for 2 seconds at the speed of 0.1mm/s, and spraying and printing a gray line in the vertical direction in the figure, wherein the length is about 0.2 mm; the substrate was moved to the left at a speed of 0.1 mm/s.
S102, selecting a fixed liquid spray head and a movable liquid spray head from the spray head array, and generating a corresponding motion mode and a corresponding spray mode based on the retaining ring structure pattern.
In one embodiment, the movement pattern is a synchronous movement pattern, i.e., the substrate and the moving liquid ejecting head are both in a moving state at the same time node. And in this embodiment, the substrate is moved while the moving liquid ejection head is moved upward. On the same time node, the selected spray mode in the step is a synchronous spray mode, namely, the fixed liquid spray head and the movable liquid spray head are both in a spray state. In this embodiment, the motion mode and the injection mode are executed according to an interaction mode, and in this embodiment, the interaction mode is: when the substrate is in a static state, the fixed liquid spray head is in a closed state and does not spray; when the substrate is in a moving state, the fixed liquid spray head is in a spraying state. And the liquid spray head is moved while spraying, and the spraying is suspended when the liquid spray head is not moved.
In another embodiment, the movement mode is a single injection mode, and the injection mode is a single injection mode, which is embodied by:
firstly, keeping a substrate still, moving a liquid spray head to move upwards for 2 seconds at the speed of 0.1mm/s, spraying and printing gray lines in the vertical direction in the graph 2, wherein the length is about 0.2mm, and synchronously curing in real time; then, the moving liquid nozzle is kept still, the substrate moves leftwards at the speed of 0.1mm/s, black lines in the left and right directions in the graph 2 are sprayed and printed by the solid liquid nozzle, and the black lines are synchronously cured in real time; the black line is thus overlaid on top of the grey line and, because of the real time curing, there is no need for physical contact between the two. The speed can be freely adjusted in the range of 0.1mm/s to 100mm/s, and the time can be freely adjusted between 1 second and 1 minute. In this embodiment, the interaction mode is: when the substrate is in a static state, the fixed liquid spray head is in a closed state and does not spray; when the substrate is in a moving state, the fixed liquid spray head is in a spraying state. And the liquid spray head is moved while spraying, and the spraying is suspended when the liquid spray head is not moved.
S103, maintaining the injection parameters in the S101, wherein in one embodiment, the motion mode is a synchronous motion mode, and the injection mode is a synchronous injection mode. The liquid ejecting head is fixed and moved to the right, and the moving liquid ejecting head is moved downward and is in an ejecting state. The interaction pattern in step S102 is simultaneously met.
In another embodiment, the movement pattern is a single movement pattern and the spray pattern is a single spray pattern. The movable liquid spray head moves downwards at the speed of 0.1mm/s and is in a spraying state, the other half of the gray line in the vertical direction in the figure is sprayed and printed, the length of the gray line is about 0.2mm, and the three-dimensional movable positioning device is synchronously used for driving the real-time curing device to perform real-time curing on the gray line at the spraying position; at the moment, the substrate is in a static state and the fixed liquid spray head is in a closed state; after the movable liquid spray head moves to the designated position (after moving for 2 s), the movable liquid spray head is switched from a motion state to a static state, and the spray state is switched to a closed state; meanwhile, the substrate is switched from a static state to a moving state (moving to the right at a speed of 0.1 mm/s), the fixed liquid nozzle is switched from a closed state to an ejection state, and the other half of the black line in the left and right directions in the figure is ejected by the fixed liquid nozzle and is synchronously cured in real time. While complying with the interaction pattern in step S102.
S104, the fixed liquid spray head and the movable liquid spray head are all in a closed state, namely do not spray. The substrate is moved to the left by one unit cycle, repeating steps S101 to S103 one by one. The interaction pattern in which the movement pattern and the spray pattern coincide at this time is: the substrate is in a moving state, and the fixed liquid spray head is in a closed state; the moving liquid spray head is in a static state and does not spray.
Repeating the steps to obtain a three-dimensional array structure of two continuous locknut nail-shaped retaining rings with the same units, wherein the warp thread rings and the weft thread rings are mutually nested to form a macroscopic structure capable of being greatly deformed. In practice, it is considered that the mechanical connection at the connection point of two adjacent rings may be weak, and it may be left for a while to increase the amount of connection liquid, or a small connection structure such as a small connection ring may be sprayed to increase the strength.
Based on the steps, when the substrate and the movable liquid nozzle are in a synchronous running state, the jet printing efficiency can be improved; and the following conditions are required to be satisfied: both should be synchronized (phase difference is 0) with the same period. The speed and direction of the substrate movement are the same as above, only the pause is cancelled; and the moving liquid ejection head moves at 0.1414mm/S at 45 degrees to the upper left in steps S102 and S104 and at 0.1414mm/S at 45 degrees to the lower right in steps S103 and S105; other ejection controls and steps are the same as above, so that the same print pattern as in the above example can be formed.
Example 4
As shown in fig. 3, a method for weaving a classic textile pattern based on a biorthogonal nozzle electrostatic spraying system matches with a moving mode of a substrate by controlling the on-off, the moving mode, the moving angle and the speed of a moving liquid nozzle, namely, selects an applicable motion mode and a spraying mode to obtain the classic textile pattern as shown in the figure, and comprises the following steps:
s201: and drawing the weft and the warp of the first row and the first column of units in sequence.
S202: and sequentially drawing the warps and the wefts of the first row and the second column of units.
S203: and drawing the weft and the warp of the first row and the third column of units in sequence.
S204: the warp and weft threads of the elements of the second row are drawn separately in chronological order as shown in figure 3.
The three-dimensional weaving of the large-area electrostatic weaving pattern can be realized by repeating the steps.
The present invention can be applied to all aspects of electrostatic spraying for all known and to be extended applications, including but not limited to: ink jet printers, organic circuit printing, display screen printing, integrated circuit printing, biological tissue engineering, liquid atomizers, ionizers, charged particle separation for macromolecular mass spectrometers, maskless lithography, micro-nano material and structure preparation, and the like, all of which form part of the present invention.
The spray head can be in various shapes and materials such as a needle tube type, a needle-free liquid level excitation type and a multi-head array type, the control electrode group can be in different shapes and materials such as a square shape, a round shape, an annular shape, a metal shape, an alloy shape and the like, and the spray substrate can be in various materials and shapes such as a metal shape, a glass shape, a plastic shape, an oxide shape, an organic matter shape, a plane shape, a spherical shape, an irregular shape and the like, and all the materials and the shapes form part of the invention.
The liquid form generated by the electrostatic discharge may be various forms such as droplets, fibers, filaments, beads, and the like, and all of them should form part of the present invention.
Claims (10)
1. An orthogonal showerhead electrostatic spray system, comprising:
a nozzle array comprising at least one fixed liquid nozzle and at least one moving liquid nozzle; wherein the moving liquid spray head has at least one degree of freedom of vertical movement on a vertical plane;
the substrate is arranged below the spray head array; the substrate has at least one horizontal degree of freedom of movement in a horizontal plane;
during weaving, the movable liquid spray head and/or the substrate move according to a pre-generated motion mode, and the movable liquid spray head and/or the fixed liquid spray head jet according to a pre-generated spray mode to sequentially complete three-dimensional cross weaving required in a single unit.
2. The orthogonal showerhead electrostatic spray system of claim 1, further comprising:
the high-voltage adjustable power supply is simultaneously electrically connected with the fixed liquid spray head and the movable liquid spray head; the high-voltage adjustable power supply is arranged to respectively control the fixed liquid spray head and the movable liquid spray head to generate electrostatic spraying;
the real-time curing device is arranged above the substrate; the real-time curing device is arranged to perform curing treatment on the liquid generated by the electrostatic spraying according to requirements;
the three-dimensional mobile positioning device is in transmission connection with the real-time curing device; the three-dimensional moving positioning device is arranged to drive the real-time curing device to move on the X, Y, Z shaft and complete the positioning at the designated position, and further complete the curing of the jet flow in the air.
3. The orthogonal showerhead electrostatic spray system of claim 1, further comprising:
the first power source is in transmission connection with the movable liquid spray head;
the second power source is in transmission connection with the base;
the control device is electrically connected to the first power source and the second power source; and after receiving the instruction of the control device, the first power source and the second power source respectively drive the movable liquid spray head and the substrate to move according to a preset track.
4. A method of using the orthogonal showerhead electrostatic spray system of any of claims 1-3, comprising the steps of:
step one, receiving an injection instruction of a current unit, and extracting instruction information;
secondly, selecting fixed liquid spray heads and movable liquid spray heads at required positions and in required quantity in the spray head array based on the instruction information; meanwhile, generating a corresponding motion mode, a corresponding spray mode and a corresponding interaction mode based on the instruction information;
thirdly, based on the motion mode, respectively executing a moving instruction and/or a static instruction to the moving liquid spray head and the substrate;
respectively executing a spraying instruction and/or a pause instruction on the fixed liquid spray head and the movable liquid spray head based on the spraying mode; and the motion pattern and the spray pattern conform to a corresponding interaction pattern.
5. The method of a quadrature nozzle electrostatic spray system of claim 4, further comprising the steps of:
if the adjacent injection commands are the same, keeping the current motion mode and the injection mode;
and if the adjacent injection instructions are different, updating the adjacent injection instructions to obtain updated instruction information, and generating a corresponding motion mode and an injection mode based on the updated instruction information.
6. The method of a quadrature spray electrostatic spray system of claim 4, wherein said command information includes: the desired weave pattern within the corresponding cell, and the spray paths and spray parameters required to spray the liquid, substrate and/or moving liquid spray head to complete the weave pattern.
7. The method of a quadrature spray head electrostatic spray system of claim 4, said movement pattern comprising at least the following:
individual movement pattern: one of the substrate and the moving liquid ejecting head is in a moving state at the same time node;
synchronous motion mode: on the same time node, the substrate and the movable liquid spray head are both in a movable state;
and switching between the individual motion mode and the synchronous motion mode.
8. The method of a quadrature spray head electrostatic spray system of claim 4, wherein said spray patterns include at least the following:
individual injection mode: on the same time node, one of the fixed liquid spray head and the movable liquid spray head is in a spray state;
synchronous injection mode: on the same time node, the fixed liquid spray head and the movable liquid spray head are both in a spraying state;
and switching between the individual injection mode and the synchronous injection mode.
9. The method of a quadrature spray electrostatic spray system of claim 4, wherein said interaction modes include at least the following modes:
the fixed liquid spray head is in a spraying state or a closing state based on the current movement state of the substrate;
based on the motion state of the current moving liquid spray head, the moving liquid spray head is in a spray state or a closed state.
10. The method of a quadrature nozzle electrostatic spray system of claim 5, further comprising the steps of:
and according to the knitting requirements, performing aerial or substrate real-time curing treatment on the liquid jet by using a real-time curing device, wherein the real-time curing device is electrically connected with a computer and is also in transmission connection with a three-dimensional mobile positioning device, and the three-dimensional mobile positioning device is arranged to drive the real-time curing device to move on an X, Y, Z axis and complete the positioning at the specified position.
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