CN108097545B - Coating liquid supply device applied to flexible substrate manufacturing - Google Patents
Coating liquid supply device applied to flexible substrate manufacturing Download PDFInfo
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- CN108097545B CN108097545B CN201711341240.8A CN201711341240A CN108097545B CN 108097545 B CN108097545 B CN 108097545B CN 201711341240 A CN201711341240 A CN 201711341240A CN 108097545 B CN108097545 B CN 108097545B
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- coating liquid
- storage container
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- flexible substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
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Abstract
The invention discloses a coating liquid supply device applied to flexible substrate manufacturing, which comprises a shell, a coating liquid storage container arranged in the shell and a vacuum generating device communicated with the shell, wherein the shell is provided with a coating liquid inlet and a coating liquid outlet; the vacuum generating device is communicated with the cavity so as to pressurize the cavity to reduce the volume of the coating liquid storage container and extrude the coating liquid from the coating liquid outlet. The coating liquid supply device has simple structure, the coating liquid does not directly contact with the gas compression cavity, the high-precision processing or grinding of the sealed cavity is not needed, the manufacturing cost is low, no particles are generated, the coating liquid discharge flow rate is large, and the coating liquid supply device can be suitable for manufacturing advanced substrates.
Description
Technical Field
The invention relates to the technical field of display, in particular to a coating liquid supply device applied to flexible substrate manufacturing.
Background
Flexible Display technology, one of the emerging fields of FPD (Flat Panel Display), is a major direction for the development of OLED (Organic Light-Emitting Diode) panels in the future.
The flexible substrate manufacturing is a pre-manufacturing process for manufacturing the flexible OLED, and is directly related to and influences the quality of the follow-up whole flexible manufacturing process. In the process of manufacturing the flexible substrate, the main organic coating materials used in the process are liquid PAA (PI manufacturing precursor, generally referred to as PIsolution in the industry, abbreviated as PI), PET (Polyethylene terephthalate), PEN (Polyethylene naphthalate), and the like.
Limited by the characteristics of the substrate material of the flexible substrate (the viscosity is particularly high, usually 3000-. In addition, the piston is in direct contact with the cavity, and in order to ensure the smoothness of the reciprocating motion of the piston during operation, the surface treatment and high-precision grinding are required to be carried out on the inner surface of the closed cavity, so that the piston type pressure pump is long in manufacturing time and high in production cost. In addition, when it is applied to the production of substrates of advanced generations, the coating amount is very large, and the thrust of the piston-type pressure pump is too small to be applicable.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a coating liquid supply device applied to the manufacture of a flexible substrate, which has low manufacturing cost, does not generate particles and has large coating liquid discharge flow.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coating liquid supply device applied to flexible substrate manufacturing comprises a shell, a coating liquid storage container arranged in the shell and a vacuum generating device communicated with the shell, wherein the shell is provided with a coating liquid inlet and a coating liquid outlet, and the coating liquid storage container is simultaneously communicated with the coating liquid inlet and the coating liquid outlet and forms a closed cavity with the shell in an enclosing manner; the vacuum generating device is communicated with the cavity so as to pressurize the cavity to reduce the volume of the coating liquid storage container and extrude the coating liquid from the coating liquid outlet.
As one of the embodiments, at least a part of the coating liquid storage container is made of a flexible material.
As one embodiment, the coating liquid storage container includes a main body portion in a capsule shape, and a first pipe and a second pipe which communicate with different portions of the main body portion, respectively, and the first pipe and the second pipe communicate with the coating liquid inlet and the coating liquid outlet, respectively.
As one embodiment, the main body portion includes two necking portions respectively communicating with the first duct and the second duct, and the sectional area of the corresponding necking portion is smaller as the adjacent first duct or the adjacent second duct is closer.
As one embodiment, the housing is further provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively communicated with the vacuum generating device.
As one embodiment, the coating liquid inlet and the coating liquid outlet are respectively provided at opposite ends of the housing, and the first pipe and the second pipe are respectively provided at both ends of the main body portion.
As one embodiment, a non-return module for preventing the coating liquid in the coating liquid storage container from flowing back towards the coating liquid inlet under the action of pressure is further arranged between the coating liquid inlet and the coating liquid storage container.
As one embodiment, the check module includes a baffle ball and a baffle plate, the baffle plate extends from the inner wall of the coating liquid storage container, the baffle ball is movably disposed between the baffle plate and the coating liquid inlet in the coating liquid flowing direction, and the diameter of the baffle ball is larger than that of the coating liquid inlet.
In one embodiment, the baffle is disposed obliquely to the flow direction of the coating liquid.
As one embodiment, the baffle plate is provided with a through hole for the coating liquid to pass through.
The coating liquid supply device has simple structure, the coating liquid does not directly contact with the gas compression cavity, the high-precision processing or grinding of the sealed cavity is not needed, the manufacturing cost is low, no particles are generated, the coating liquid discharge flow rate is large, and the coating liquid supply device can be suitable for manufacturing advanced substrates.
Drawings
FIG. 1 is a schematic structural view of a coating liquid supply apparatus according to an embodiment of the present invention;
FIG. 2 is a functional schematic of a check module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in 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.
Referring to fig. 1, which is a schematic structural diagram of a coating liquid supply device applied to flexible substrate manufacturing according to an embodiment of the present invention, the coating liquid supply device mainly includes a housing 10, a coating liquid storage container 20 disposed in the housing 10, and a vacuum generating device 30 communicated with the housing 10, the housing 10 is provided with a coating liquid inlet 11 and a coating liquid outlet 12, the coating liquid storage container 20 is simultaneously communicated with the coating liquid inlet 11 and the coating liquid outlet 12, and encloses a sealed cavity 100 with the housing 10; the vacuum generator 30 communicates with the chamber 100 to pressurize the chamber 100 to reduce the volume of the coating liquid storage container 20 and to press the coating liquid out of the coating liquid outlet 12.
In one embodiment, at least a portion of the coating liquid storage container 20 may be made of a flexible material, or may be made of a flexible material, for example, a material having flexibility and strength, such as teflon, which can be deformed to some extent without being damaged and has a certain deformation recovery capability under an external force. When supplying the coating liquid, the vacuum generating device 30 inflates the cavity 100 to compress the coating liquid storage container 20, so that the coating liquid in the coating liquid storage container 20 is extruded out from the coating liquid outlet 12 along with the deformation of the coating liquid storage container 20, in the process, the cavity 100 is continuously pressurized by the vacuum generating device 30 until the coating liquid storage container 20 is completely shriveled, so that the supply of the coating liquid is realized, then, the cavity 100 is deflated by the vacuum generating device 30 to restore the coating liquid storage container 20, the coating liquid storage container 20 is filled with the coating liquid through the coating liquid inlet 11, and the next coating liquid supplying process can be realized by repeating the operations.
The coating liquid storage container 20 includes a main body portion 21 having a capsule shape, and a first pipe 22 and a second pipe 23 communicating with different portions of the main body portion 21, respectively, and the first pipe 22 and the second pipe 23 communicate with the coating liquid inlet 11 and the coating liquid outlet 12, respectively. The radial dimensions of the first and second conduits 22 and 23 are smaller than the middle portion of the main body portion 21, so that the spraying pressure of the coating liquid outlet 12 is easily formed, and the continuous supply of the coating liquid is ensured.
Preferably, the main body portion 21 includes two necked-down portions communicating with the first and second ducts 22 and 23, respectively, and the sectional area of the respective necked-down portions is smaller as closer to the adjacent first or second duct 22 or 23. That is, each of the necking portions is in a bell mouth shape, and the section of the inner wall thereof in the axial direction is a slope or a curved surface, so that the main body portion 21 in a bag shape can be filled well, and the filling process of the coating liquid from the main body portion 21 toward the second pipe 23 is smoother. Here, in order to communicate with the vacuum generating device 30, the housing 10 is further provided with an air inlet 13 and an air outlet 14, and the air inlet 13 and the air outlet 14 are respectively communicated with the vacuum generating device 30. The inlet and the outlet of the air are separated, so that the air flow of the inlet and the air flow of the outlet can be respectively adjusted, compared with the method of inflating or exhausting by using the same inlet and the same outlet, in the embodiment, air inlet and air outlet can be simultaneously performed, in the actual operation process, the pressure in the cavity 100 can be conveniently adjusted by only reasonably controlling the air pressure difference between the air inlet 13 and the air outlet 14, and the switching action of inflation and air exhaust is more sensitive.
Further, the coating liquid inlet 11 and the coating liquid outlet 12 are respectively provided at opposite ends of the housing 10, the first pipe 22 and the second pipe 23 are respectively provided at opposite ends of the main body portion 21, and the air inlet 13 and the air outlet 14 are respectively provided at the same side wall of the housing 10. The coating liquid storage container 20 may be designed to have a relatively regular elongated shape, and the air inlet 13 and the air outlet 14 are respectively provided on the long side walls of the housing 10 to be opposed to the long side walls of the coating liquid storage container 20, so that the inflation and compression actions can be conveniently performed.
As shown in fig. 2, a non-return block 110 for preventing the coating liquid in the coating liquid storage container 20 from flowing back toward the coating liquid inlet 11 under pressure is further provided between the coating liquid inlet 11 and the coating liquid storage container 20 in the present embodiment. In one embodiment, the check module 110 includes a ball stopper 111 and a baffle 112, the baffle 112 extends from the inner wall of the coating liquid storage container 20, the ball stopper 111 is movably disposed between the baffle 112 and the coating liquid inlet 11 in the flow direction of the coating liquid, and the ball stopper 111 has a larger diameter than the coating liquid inlet 11. The baffle 112 is disposed obliquely relative to the flow direction of the coating liquid, i.e. preferably extends obliquely along the flow direction of the coating liquid, so as to reduce the influence on the flow of the coating liquid, and the connection between the coating liquid inlet 11 and the coating liquid storage container 20 is also connected by an oblique connecting wall 11a, i.e. the opening formed by the connecting wall 11a gradually becomes larger from the coating liquid inlet 11 to the coating liquid storage container 20, so as to better cooperate with the ball stopper 111 and also play a role in guiding the ball stopper 111. In addition, the baffle 112 is also designed to be a hollow structure, and is provided with a through hole 1120 for the coating liquid to pass through, so that the resistance to the coating liquid can be reduced to the maximum extent, and the limiting effect on the baffle ball 111 can be ensured.
When the coating liquid is injected from the coating liquid inlet 11, the baffle ball 111 moves between the coating liquid inlet 11 and the baffle 112 along the flow direction of the coating liquid under the thrust of the coating liquid, when the injection of the coating liquid is finished, and the cavity 100 is pressurized by the vacuum generating device 30, the coating liquid is extruded out through the coating liquid outlet 12, meanwhile, a part of the coating liquid also generates the thrust towards the coating liquid inlet 11 to the baffle ball 111, and when the coating liquid inlet 11 moves along the connecting wall 11a and is blocked at the coating liquid inlet 11, the coating liquid cannot flow out from the coating liquid inlet 11, so that the function of preventing the backflow of the coating liquid is realized.
As described above, the coating liquid supply apparatus of the present invention has a simple structure, does not directly contact the gas compression chamber, does not require high-precision processing or polishing of the sealed chamber, has a low production cost, does not generate particles, has a large discharge flow rate of the coating liquid, and can be suitably used for production of advanced substrates. Moreover, the invention specially designs a structure for preventing the backflow of the coating liquid, so that the supply process of the coating liquid is very reliable, and the leakage of the coating liquid can not be caused.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (7)
1. The coating liquid supply device applied to the flexible substrate manufacturing is characterized by comprising a shell (10), a coating liquid storage container (20) arranged in the shell (10) and a vacuum generating device (30) communicated with the shell (10), wherein the shell (10) is provided with a coating liquid inlet (11) and a coating liquid outlet (12), and the coating liquid storage container (20) is simultaneously communicated with the coating liquid inlet (11) and the coating liquid outlet (12) and is surrounded with the shell (10) to form a sealed cavity (100); the vacuum generating device (30) is communicated with the cavity (100) to pressurize the cavity (100) to reduce the volume of the coating liquid storage container (20) and extrude the coating liquid from the coating liquid outlet (12),
at least a part of the coating liquid storage container (20) is made of a flexible material,
the coating liquid storage container (20) comprises a bag-shaped main body part (21) and a first pipeline (22) and a second pipeline (23) which are respectively communicated with different parts of the main body part (21), wherein the first pipeline (22) and the second pipeline (23) are respectively communicated with the coating liquid inlet (11) and the coating liquid outlet (12),
the shell (10) is further provided with an air inlet (13) and an air outlet (14), and the air inlet (13) and the air outlet (14) are respectively communicated with the vacuum generating device (30).
2. The coating liquid supply apparatus for flexible substrate fabrication as claimed in claim 1, wherein said main body portion (21) comprises two necking portions respectively communicating with said first duct (22) and said second duct (23), and the sectional area of the corresponding necking portion is smaller as it approaches the adjacent first duct (22) or said second duct (23).
3. The coating liquid supply apparatus applied to flexible substrate production as defined in claim 1, wherein said coating liquid inlet (11), said coating liquid outlet (12) are respectively provided at opposite ends of said housing (10), and said first pipe (22) and said second pipe (23) are respectively provided at both ends of said main body portion (21).
4. The coating fluid supply device applied to flexible substrate manufacturing according to any one of claims 1-3, wherein a check module (110) for preventing the coating fluid in the coating fluid storage container (20) from flowing back towards the coating fluid inlet (11) under pressure is further disposed between the coating fluid inlet (11) and the coating fluid storage container (20).
5. The coating liquid supply device applied to flexible substrate production according to claim 4, wherein the non-return module (110) comprises a baffle ball (111) and a baffle plate (112), the baffle plate (112) extends from the inner wall of the coating liquid storage container (20), the baffle ball (111) is movably disposed between the baffle plate (112) and the coating liquid inlet (11) in the coating liquid flow direction, and the diameter of the baffle ball (111) is larger than that of the coating liquid inlet (11).
6. The coating liquid supply device applied to flexible substrate production as set forth in claim 5, wherein said baffle (112) is disposed obliquely with respect to the flow direction of the coating liquid.
7. The coating liquid supply device applied to flexible substrate production as claimed in claim 5, wherein the baffle plate (112) is provided with a through hole (1120) for the coating liquid to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341240.8A CN108097545B (en) | 2017-12-14 | 2017-12-14 | Coating liquid supply device applied to flexible substrate manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341240.8A CN108097545B (en) | 2017-12-14 | 2017-12-14 | Coating liquid supply device applied to flexible substrate manufacturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108097545A CN108097545A (en) | 2018-06-01 |
| CN108097545B true CN108097545B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711341240.8A Active CN108097545B (en) | 2017-12-14 | 2017-12-14 | Coating liquid supply device applied to flexible substrate manufacturing |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19929844A1 (en) * | 1999-06-29 | 2001-01-04 | Baldwin Grafotec Gmbh | Liquid supply device |
| CN100544960C (en) * | 2006-02-15 | 2009-09-30 | 精工爱普生株式会社 | Liquid container |
| JP5397260B2 (en) * | 2010-02-18 | 2014-01-22 | ブラザー工業株式会社 | Cloth bonding apparatus and cartridge |
| CN102641828B (en) * | 2011-02-22 | 2016-01-20 | 施敏打硬株式会社 | Plastic containers, strip channel member and applying device |
| CN104117470B (en) * | 2014-08-06 | 2017-01-11 | 浏阳市颐和隆烟花集团有限公司 | Flexible pressurization glue supply device for dispensing glue on molded fireworks |
| CN205715841U (en) * | 2016-03-23 | 2016-11-23 | 天津首阀科技有限公司 | A kind of filter check valve |
| CN205654923U (en) * | 2016-05-09 | 2016-10-19 | 河南金泉新能源股份有限公司 | Novel check valve |
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2017
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