Liquid drop flight control device for inhibiting satellite liquid drops based on annular electrode trampoline effect

Abstract

The utility model relates to a liquid drop flight control device for inhibiting satellite liquid drops based on an annular electrode trampoline effect, which comprises a control mechanism composed of a moving assembly and a clamping assembly. The moving assembly comprises a base, a first fixing block, a first guide rod, a first moving plate, a first threaded rod, a first motor, a second moving plate, a second fixing block, a second guide rod, a second threaded rod, a second motor, a third guide rod, a fixing cylinder, an adjusting screw sleeve, a third threaded rod and a limiting sliding block. The clamping assembly comprises an upper clamping plate, a lower clamping plate, a limiting rod, a pull rod, an adjusting handle and a spring. By arranging the control mechanism, substrates with different thicknesses can be clamped and limited, the positions of the substrates in the three-dimensional space can be flexibly adjusted, the substrates can accurately and freely move in the three-dimensional space, diversified printing position requirements are met, operation is convenient, and the printing efficiency is improved. The method has important industrial application value and wide market prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electrohydrodynamics drop-on-demand (EHDDOD) printing technical field, concretely relates to liquid drop flight control device based on ring electrode trampoline effect inhibition satellite liquid drop. BACKGROUND

[0002] With the continuous progress of micro-nano manufacturing technology, the pulsed voltage driven electrohydrodynamics drop-on-demand printing as the micro-nano scale additive manufacturing technology with great potential is concerned. The technology has outstanding advantages such as high resolution, wide material application range, low cost and environmental protection, and has broad prospects in many fields, like the fine structure in the additive manufacturing field, the flexible electronic components in the wearable device manufacturing, the light and thin bendable electronic devices in the flexible electronic field, and the accurate printing of biological materials for making tissue engineering scaffolds in the biomedical application. Unlike the traditional printing technology based on pushing (pneumatic inkjet), the EHD inkjet printing utilizes the strong electric field force to pull the fluid instead of pushing, can form thinner jet or liquid drop, and the manufacturing precision can reach less than 1 mu m level, which is difficult to achieve by the traditional printing technology. However, the EHDDOD printing technology has key problems in actual application. The Rayleigh instability can cause small satellite liquid drops in the liquid drop formation process. After the conical jet is formed and the high voltage is turned off, multiple satellite liquid drops are formed in the neck due to the surface tension effect, which seriously affects the printing pattern clarity, reduces the printing resolution, and greatly limits the application of the technology in high-precision manufacturing. Please refer to Figures 4-7 Therefore, by applying a restraining electric field in the liquid drop flight process, such as the restraining electric field generated by the ring electrode in the liquid drop flight process, the electric field is like a "trampoline", which buffers the liquid drop falling process, can effectively inhibit the generation of satellite liquid drops in the EHDDOD printing, improve the printing precision and consistency, and promote the application in high-resolution additive manufacturing.

[0003] In the prior art, the lower portion of the ring electrode of the liquid drop flight control device is provided with a substrate, however, the substrate is inconvenient to move in X, Y and Z three-axis directions (lateral, longitudinal and vertical directions), is also difficult to be clamped and limited, is inconvenient to be moved and controlled, and is not conducive to printing. In view of the above problems, the liquid drop flight control device based on ring electrode trampoline effect inhibition satellite liquid drop is provided. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide the liquid drop flight control device based on ring electrode trampoline effect inhibition satellite liquid drop in view of the defects in the prior art.

[0005] The technical scheme employed by the utility model is: the liquid drop flight control device based on ring electrode trampoline effect inhibition satellite liquid drop, comprising a control mechanism, the control mechanism is composed of a moving assembly and a clamping assembly.

[0006] The moving assembly comprises a base, two first fixing blocks, a first guide rod, a first moving plate, a first threaded rod, a first motor, a second moving plate, two second fixing blocks, a second guide rod, a second threaded rod, a second motor, a third guide rod, a fixing cylinder, an adjusting sleeve, a third threaded rod and a limiting sliding block, the two first fixing blocks are fixedly connected to the base, the two first fixing blocks are fixedly connected with the first guide rod, the first guide rod is slidably connected to the upper inner wall of the first moving plate, the lower inner wall of the first moving plate is threadedly connected with the first threaded rod, and the end of the first threaded rod is rotatably connected to the first fixing block through a bearing; the two second fixing blocks are fixedly connected to the first moving plate, the two second fixing blocks are fixedly connected with the second guide rod, the second guide rod is slidably connected to the right inner wall of the second moving plate, the left inner wall of the second moving plate is threadedly connected with the second threaded rod, and the end of the second threaded rod is rotatably connected to the second fixing block through a bearing; the two third guide rods are vertically fixed to the left top of the second moving plate, the fixing cylinder is fixed to the right top of the second moving plate, the fixing cylinder is rotatably connected with the adjusting sleeve at the top end, the adjusting sleeve is threadedly connected with the third threaded rod, the top end of the third threaded rod is rotatably connected to the clamping assembly through a bearing, the bottom end of the third threaded rod is fixedly connected with the limiting sliding block, and the limiting sliding block is slidably connected to the inner wall of the fixing cylinder.

[0007] Preferably, the clamping assembly comprises an upper clamping plate, a lower clamping plate, a limiting rod, a pull rod, an adjusting handle and a spring, the third guide rod and the limiting rod are slidably connected to the inner wall of the upper clamping plate, the limiting rod and the pull rod are vertically arranged, the bottom ends of the limiting rod and the pull rod are fixedly connected to the lower clamping plate, the upper end of the pull rod is threadedly connected with the adjusting handle, the adjusting handle and the upper clamping plate are further fixedly connected with the spring, and the spring is sleeved on the pull rod.

[0008] Preferably, the first threaded rod and the first guide rod are arranged in parallel, the second threaded rod and the second guide rod are arranged in parallel, and the third threaded rod and the third guide rod are arranged in parallel.

[0009] Preferably, the leftmost end of the first threaded rod further extends to the outside through the side wall of the left first fixing block and is connected with the output end of the first motor, the first motor is electrically connected with the controller and is fixedly installed on the base through the pad, the front end of the second threaded rod further extends to the outside through the side wall of the front second fixing block and is connected with the output end of the second motor, and the second motor is electrically connected with the controller and is fixedly installed on the first moving plate through the pad.

[0010] Preferably, the lower end of the pull rod is slidably connected to the inner wall of the upper clamping plate, the upper end of the pull rod is provided with external threads, the adjusting handle is provided with internal threads, and the external threads and the internal threads are matched.

[0011] Preferably, the third threaded rod top end is rotatably connected to the upper clamping plate through a bearing.

[0012] Preferably, the upper clamping plate and the lower clamping plate are both attached with rubber pads on the side close to the base plate.

[0013] Compared with the prior art, the base plate clamping device has the following beneficial effects:

[0014] The control mechanism can clamp and limit base plates of different thicknesses, and can very flexibly adjust the position of the base plate in three-dimensional space, realize accurate and free movement of the base plate in three-dimensional space, is convenient to operate, is beneficial to printing, meets diversified printing position requirements, has important industrial application value and broad market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a partial front view schematic diagram of the mobile assembly of the utility model;

[0016] Figure 2 It is a partial top view schematic diagram of the mobile assembly of the utility model;

[0017] Figure 3 It is a partial front view schematic diagram of the clamping assembly of the utility model;

[0018] Figure 4 It is the Taylor cone principle based on the electro-fluid ink jet printing of the utility model;

[0019] Figure 5 It is the satellite droplet suppression method principle based on the ring electrode trampoline effect of the utility model;

[0020] Figure 6 It is the simulation effect of the satellite droplet suppression method based on the ring electrode trampoline effect of the utility model;

[0021] Figure 7 It is the schematic diagram of droplet flight based on the satellite droplet suppression of the ring electrode of the utility model.

[0022] ILLUSTRATIVE DESCRIPTION:

[0023] 1, moving assembly; 2, clamping assembly; 3, base plate; 4, rubber pad; 101, base; 102, first fixed block; 103, first guide rod; 104, first moving plate; 105, first threaded rod; 106, first motor; 107, second moving plate; 108, second fixed block; 109, second guide rod; 110, second threaded rod; 111, second motor; 112, third guide rod; 113, fixed cylinder; 114, adjusting sleeve; 115, third threaded rod; 116, limit sliding block; 201, upper clamping plate; 202, lower clamping plate; 203, limit rod; 204, pull rod; 205, adjusting handle; 206, spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0026] EMBODIMENT

[0027] Please refer to Figures 1-3 and combine with Figures 4-7The droplet flight control device based on the ring electrode trampoline effect to suppress satellite droplets of the embodiment comprises a control mechanism composed of a moving assembly 1 and a clamping assembly 2; in the implementation, a ring electrode assembly, an ink supply system and a monitoring and control system matched with the control mechanism are further arranged, the ring electrode assembly, the ink supply system and the monitoring and control system are all controlled by a PC end, the ring electrode in the ring electrode assembly is arranged around the droplet flight path, a constraint electric field is generated through a connected power supply to constrain the droplet in flight, the ring electrode assembly is made of a high-conductivity metal material, such as copper or aluminum alloy with a purity not less than 99.9%, to ensure the efficiency and stability of the electric field generation, the strength and distribution characteristics of the constraint electric field can be changed to achieve effective constraint of the droplet; the ink supply system is connected with a print head or nozzle that can move up and down, is used to store and supply the print head with ink with specific physical properties, and guarantees ink supply; the monitoring and control system comprises a high-speed camera device, a data analysis module and a control execution unit, the high-speed camera device collects droplet flight images, the data analysis module processes the images to obtain parameters such as the speed, diameter and trajectory of the droplet, real-time monitors the droplet flight state, the control execution unit adjusts system parameters according to the analysis results, and adjusts the electric field parameters of the ring electrode, the delivery parameters of the ink and the optimization parameter adjustment strategy according to the monitoring results, to improve the printing efficiency and quality.

[0028] The moving assembly 1 comprises a base 101, first fixed blocks 102, a first guide rod 103, a first moving plate 104, a first threaded rod 105, a first motor 106, a second moving plate 107, second fixed blocks 108, a second guide rod 109, a second threaded rod 110, a second motor 111, a third guide rod 112, a fixed cylinder 113, an adjusting sleeve 114, a third threaded rod 115, and a limiting sliding block 116.

[0029] Further, the first threaded rod 105 and the first guide rod 103 are arranged in parallel; the second threaded rod 110 and the second guide rod 109 are arranged in parallel; and the third threaded rod 115 and the third guide rod 112 are arranged in parallel. In actual implementation, a scale line can be marked on the first guide rod 103, the second guide rod 109, and the third guide rod 112, so as to facilitate further observation of the moving distance of the substrate 3 in the X, Y, and Z three-axis directions (lateral, longitudinal, and vertical directions).

[0030] Further, the leftmost end of the first threaded rod 105 also extends through the sidewall of the left first fixed block 102 to the outside and is connected with the output end of the first motor 106, the first motor 106 is electrically connected with the controller of the PC end and is fixedly installed on the base 101 through the cushion block; the frontmost end of the second threaded rod 110 also extends through the sidewall of the front second fixed block 108 to the outside and is connected with the output end of the second motor 111, the second motor 111 is electrically connected with the controller of the PC end and is fixedly installed on the first moving plate 104 through the cushion block.

[0031] It can be understood that:

[0032] When the substrate 3 needs to move in the X-axis direction, the first motor 106 can be controlled by the controller, and the first motor 106 can drive the first threaded rod 105 to rotate forward and backward, the first threaded rod 105 can drive the first moving plate 104 to move left and right, and then the first moving plate 104 can drive the clamping assembly 2 and the substrate 3 to move left and right, that is, the substrate 3 can move freely in the X-axis direction (transversely);

[0033] When the substrate 3 needs to move in the Y-axis direction, the second motor 111 can be controlled by the controller, and the second motor 111 can drive the second threaded rod 110 to rotate forward and backward, the second threaded rod 110 can drive the second moving plate 107 to move forward and backward, and then the second moving plate 107 can drive the clamping assembly 2 and the substrate 3 to move forward and backward, that is, the substrate 3 can move freely in the Y-axis direction (vertically);

[0034] When the substrate 3 needs to move in the Z-axis direction, the adjusting nut 114 can be manually screwed to rotate forward and backward, the adjusting nut 114 can drive the third threaded rod 115 to move upward or downward in the thread, and then the third threaded rod 115 can drive the clamping assembly 2 and the substrate 3 to move upward or downward, that is, the substrate 3 can move freely in the Z-axis direction (vertically).

[0035] Further, the clamping assembly 2 comprises an upper clamping plate 201, a lower clamping plate 202, a limiting rod 203, a pull rod 204, an adjusting handle 205, a spring 206, the third guide rod 112 and the limiting rod 203 are both slidably connected with the inner wall of the upper clamping plate 201, the limiting rod 203 and the pull rod 204 are both vertically arranged, the bottom ends of the limiting rod 203 and the pull rod 204 are both fixedly connected with the lower clamping plate 202, the upper end of the pull rod 204 is threadedly connected with the adjusting handle 205, the adjusting handle 205 and the upper clamping plate 201 are further fixedly connected with the spring 206, and the spring 206 is sleeved on the pull rod 204.

[0036] Further, the lower end of the pull rod 204 is in sliding connection with the inner wall of the upper clamping plate 201, and the upper end of the pull rod 204 is provided with external threads, and the adjusting handle 205 is provided with internal threads, and the external threads are matched with the internal threads.

[0037] It can be understood that when the substrate 3 needs to be clamped and limited, the lower clamping plate 202 can be manually pulled down, and the lower clamping plate 202 is pulled down, and the pull rod 204 and the adjusting handle 205 are pulled down, when the upper clamping plate 201 and the lower clamping plate 202 are separated, one side of the substrate 3 can be placed between the upper clamping plate 201 and the lower clamping plate 202, at this time the spring 206 is also compressed and deformed, then the lower clamping plate 202 is released, and the compressed spring 206 will recover part of the deformation, and the spring 206 recovers the deformation and drives the upper clamping plate 201 and the lower clamping plate 202 to approach, that is, the substrate 3 of different thicknesses can be clamped and limited, and the reverse operation can also release the limitation of the substrate 3.

[0038] It can also be understood that the pull rod 204 is held by hand, and then the adjusting handle 205 is twisted to rotate, so that the adjusting handle 205 is screwed up or down, and the adjusting handle 205 is screwed up or down to adjust the deformation distance of the spring 206, and the deformation distance of the spring 206 is different, so that the elastic force generated is also different, and then the clamping force of the upper clamping plate 201 and the lower clamping plate 202 on the substrate 3 also changes, that is, the tightness of the clamping of the substrate 3 is conveniently adjusted.

[0039] Further, the top end of the third threaded rod 115 is rotatably connected to the upper clamping plate 201 through a bearing.

[0040] Further, the side of the upper clamping plate 201 and the lower clamping plate 202 close to the substrate 3 is adhered with a rubber pad 4.

[0041] Working principle: please refer to Figures 1-3 It is shown that the substrate 3 can be clamped and limited by the clamping assembly 2 first, and then the substrate 3 is moved in the X, Y and Z three-axis directions (three-axis directions are: horizontal, vertical and vertical) by the moving assembly 1, until the substrate 3 is adjusted to the required position, and after printing is completed, the limitation of the substrate 3 can also be released by the clamping assembly 2. Overall, the design can clamp and limit the substrate 3 of different thicknesses, and can very flexibly adjust the position of the substrate 3 in three-dimensional space, realize the accurate and free movement of the substrate 3 in three-dimensional space, convenient operation, conducive to printing, can continuously print multiple points, improve the efficiency of the printing process, meet the diversified printing position requirements, have important industrial application value and broad market prospect, and have strong practicality.

[0042] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A droplet flight control device for suppressing satellite droplets based on a ring electrode trampoline effect, comprising a control mechanism, characterized in that, The control mechanism is composed of a moving assembly (1) and a clamping assembly (2); The moving assembly (1) comprises a base (101), first fixed blocks (102), first guide rods (103), a first moving plate (104), a first threaded rod (105), a first motor (106), a second moving plate (107), second fixed blocks (108), second guide rods (109), a second threaded rod (110), a second motor (111), third guide rods (112), a fixed cylinder (113), an adjusting sleeve (114), a third threaded rod (115), and a limiting sliding block (116). The two first fixed blocks (102) are fixedly connected to the base (101). The first guide rods (103) are fixedly connected between the two first fixed blocks (102). The first guide rods (103) are slidably connected to the upper inner wall of the first moving plate (104). The lower inner wall of the first moving plate (104) is threadedly connected to the first threaded rod (105). The end of the first threaded rod (105) is rotatably connected to the first fixed block (102) through a bearing. The two second fixed blocks (108) are fixedly connected to the first moving plate (104). The second guide rods (109) are fixedly connected between the two second fixed blocks (108). The second guide rods (109) are slidably connected to the right inner wall of the second moving plate (107). The left inner wall of the second moving plate (107) is threadedly connected to the second threaded rod (110). The end of the second threaded rod (110) is rotatably connected to the second fixed block (108) through a bearing. The two third guide rods (112) are vertically fixed to the left top of the second moving plate (107). The fixed cylinder (113) is fixed to the right top of the second moving plate (107). The fixed cylinder (113) is rotatably connected to the adjusting sleeve (114) at the top end. The adjusting sleeve (114) is threadedly connected to the third threaded rod (115). The top end of the third threaded rod (115) is rotatably connected to the clamping assembly (2) through a bearing. The bottom end of the third threaded rod (115) is fixedly connected to the limiting sliding block (116). The limiting sliding block (116) is slidably connected to the inner wall of the fixed cylinder (113).

2. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect according to claim 1, characterized in that: The clamping assembly (2) comprises upper clamping plates (201), lower clamping plates (202), limiting rods (203), pull rods (204), adjusting handles (205), and springs (206). The third guide rods (112) and the limiting rods (203) are slidably connected to the inner wall of the upper clamping plates (201). The limiting rods (203) and the pull rods (204) are vertically arranged. The bottom ends of the limiting rods (203) and the pull rods (204) are fixedly connected to the lower clamping plates (202). The upper end of the pull rod (204) is threadedly connected to the adjusting handle (205). The adjusting handle (205) and the upper clamping plate (201) are further fixedly connected to the spring. The spring is sleeved on the pull rod (204).

3. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect according to claim 1, characterized in that: The first threaded rod (105) and the first guide rod (103) are arranged in parallel; the second threaded rod (110) and the second guide rod (109) are arranged in parallel; and the third threaded rod (115) and the third guide rod (112) are arranged in parallel.

4. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect according to claim 1, characterized in that: The leftmost end of the first threaded rod (105) further extends to the outside through the side wall of the left first fixed block (102) and is connected with the output end of the first motor (106), the first motor (106) is electrically connected with the controller and is fixedly installed on the base (101) through a cushion block; and the front end of the second threaded rod (110) further extends to the outside through the side wall of the front second fixed block (108) and is connected with the output end of the second motor (111), the second motor (111) is electrically connected with the controller and is fixedly installed on the first moving plate (104) through a cushion block.

5. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect according to claim 2, characterized in that: The lower end of the pull rod (204) is in sliding connection with the inner wall of the upper clamping plate (201), and the upper end of the pull rod (204) is provided with external threads, and the adjusting handle (205) is provided with internal threads.

6. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect of claim 1, wherein: The top end of the third threaded rod (115) is rotatably connected with the upper clamping plate (201) through a bearing.

7. The droplet flight control device for suppressing satellite droplets based on the ring electrode bounce bed effect of claim 2, wherein: The upper clamping plate (201) and the lower clamping plate (202) are both attached with rubber pads (4) on the side close to the base plate (3).

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