CN111746099A - Deformation-preventing vacuum adsorption mechanism for screen printing plate - Google Patents
Deformation-preventing vacuum adsorption mechanism for screen printing plate Download PDFInfo
- Publication number
- CN111746099A CN111746099A CN202010725439.6A CN202010725439A CN111746099A CN 111746099 A CN111746099 A CN 111746099A CN 202010725439 A CN202010725439 A CN 202010725439A CN 111746099 A CN111746099 A CN 111746099A
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- Prior art keywords
- screen
- frame
- plate
- upper screen
- screen plate
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 238000007650 screen-printing Methods 0.000 title claims description 36
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
- B41F15/36—Screens, Frames; Holders therefor flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
Abstract
The invention relates to the technical field of screen adsorption, in particular to an anti-deformation screen vacuum adsorption mechanism, and aims to solve the technical problem that a screen of the conventional screen vacuum adsorption mechanism is easy to deform. The following technical scheme is adopted: comprises an upper screen frame, an upper screen plate, a lower screen frame and a lower screen plate; the side wall of the upper screen frame is provided with a pneumatic joint, the upper screen plate is stretched on the upper surface of the upper screen frame and sealed, and the edge part of the upper screen plate is coated with glue and sealed; the inner edge part of the lower screen frame protrudes upwards to form the installation frame, the installation frame is arranged in the upper screen frame, a gap is reserved between the outer wall of the installation frame and the inner wall of the upper screen frame, the lower screen plate is stretched on the upper surface of the installation frame and sealed, the lower screen plate is coated with glue completely, the distance between the upper screen plate and the lower screen plate is 0.2-0.5 mm, and screen gauze is arranged between the upper screen plate and the lower screen plate, the deformation resistance of the lower screen plate is lower than that of the upper screen plate, and the upper surface of the part, located outside the installation frame, of the lower screen frame is connected with the lower surface of the upper screen frame through a sealing.
Description
Technical Field
The invention relates to the technical field of screen adsorption, in particular to an anti-deformation vacuum adsorption mechanism for a screen.
Background
The flat panel display industry is the most active and fast-developing industry at present, a screen vacuum adsorption mechanism can be used for multiple times in the manufacturing process of a flat panel display device, a screen stretched on a screen frame has excellent flexibility and good air permeability, and an air permeable area of the screen has good adsorbability on a plane sheet under the condition of vacuumizing a screen cavity, so that the flat panel display device is widely applied to an attaching process of a polaroid, an OCA (optical clear adhesive), a graphite sheet and a protective film. The existing screen vacuum adsorption mechanism is characterized in that one layer of screen is stretched on one side of an opening of a metal box body, the strength of the metal box body is far greater than that of the screen, the screen is firstly deformed under the condition of vacuumizing the box body, a concave surface is formed in a vacuum adsorption area of a sheet, the sheet adsorbed on the concave surface is bent and deformed accordingly, the deformation greatly affects the visual positioning accuracy of the sheet, and the attaching accuracy of the sheet is reduced. In addition, the screen printing plate of the metal box body has a complex structure and a large volume, and the application range of the screen printing plate is limited.
Disclosure of Invention
The invention aims to solve the technical problem that a screen plate of the existing screen plate vacuum adsorption mechanism is easy to deform.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an anti-deformation vacuum adsorption mechanism for a screen printing plate comprises an upper screen frame, an upper screen printing plate, a lower screen frame and a lower screen printing plate; the side wall of the upper screen frame is provided with at least one pneumatic connector which is communicated with the inside of the upper screen frame, the upper screen plate is stretched on the upper surface of the upper screen frame and is sealed (namely the upper screen plate covers the whole opening of the upper screen frame), and the edge part of the upper screen plate is coated with glue and sealed so that only the middle part forms a ventilation area for adsorbing products; the inner edge part of the lower screen frame protrudes upwards to form a mounting frame, the mounting frame is arranged in the upper screen frame, a gap is reserved between the outer wall of the mounting frame and the inner wall of the upper screen frame, the lower screen plate is stretched on the upper surface of the mounting frame and sealed, all the lower screen plate is coated with glue so that all the pages are air-tight areas, the distance between the upper screen plate and the lower screen plate is 0.2-0.5 mm (when the lower screen plate works, the lower screen plate is stretched into a roller from the inner part of the lower screen frame to roll the lower screen plate, force is transmitted to the upper screen plate through deformation of the lower screen plate, so that rolling of a product is realized, if the distance between the upper screen plate and the lower screen plate is too large, the roller rolling force cannot be transmitted to the product, if the distance between the upper screen plate and the lower screen plate is too small, the upper screen plate and the lower screen plate are adsorbed together, and a negative pressure cavity is prevented, the deformation resistance of the lower screen plate is lower than that of the upper screen plate (so as to ensure that the lower screen plate is preferentially deformed when negative pressure is formed by air exhaust), and the upper surface of the part, which is positioned outside the mounting frame, of the lower screen frame is connected with the lower surface of the upper screen frame in a sealing way through a sealing ring.
When the negative pressure suction type screen printing machine is used, the upper screen frame, the lower screen frame, the upper screen printing plate, the lower screen printing plate and a product form a closed cavity together, the pneumatic connector is connected with a vacuum source to exhaust air, the closed cavity forms a negative pressure cavity, the product is placed in the ventilation area of the upper screen printing plate, and the product is firmly adsorbed on the upper surface of the upper screen printing plate under the action of negative pressure.
The invention has the beneficial effects that:
1) according to the deformation-preventing vacuum adsorption mechanism for the screen printing plate, the upper screen printing plate, the product, the lower screen printing plate, the upper screen printing frame and the lower screen printing frame form a sealed cavity together, when the sealed cavity is exhausted to form negative pressure, the lower screen printing plate can deform preferentially due to the fact that the lower screen printing plate is poorer in deformation resistance than the upper screen printing plate, so that the upper screen printing plate deforms slightly or even does not deform, deformation of the screen printing plate adsorbing the product is greatly reduced compared with that of the existing metal box type structure, and the precision of a visual positioning system is guaranteed;
2) the deformation-preventing vacuum adsorption mechanism for the screen printing plate is made of the upper screen frame and the lower screen frame, and compared with the existing metal box body structure, the deformation-preventing vacuum adsorption mechanism for the screen printing plate is simpler in structure, smaller in size and wider in application range.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an isometric view of the overall structure of the vacuum suction mechanism of the screen printing plate of the present invention;
fig. 2 is a cross-sectional view of a vacuum suction mechanism of the screen of the present invention;
FIG. 3 is a schematic view of an assembly structure of the lower frame and the lower screen plate of the present invention;
fig. 4 is a schematic view of an assembly structure of the upper screen frame and the upper screen plate of the present invention.
In the figure:
1 ┄ putting on a net frame; 2 ┄ screen printing; 3 ┄ lower frame; 4 ┄ lower screen printing plate; 5 ┄ pneumatic joint; 6 ┄ breathable zone; 7 ┄ installing frame; 8 ┄ mesh; 9 ┄ sealing ring; 10 ┄ bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1 to 4, the deformation-preventing vacuum adsorption mechanism for the screen printing plate comprises an upper screen frame 1, an upper screen printing plate 2, a lower screen printing plate 3 and a lower screen printing plate 4, wherein the screen printing plate adopts the existing screen printing plate structure, is of a breathable structure, and is sealed by gluing; the side wall of the upper screen frame 1 is provided with at least one pneumatic connector 5, the pneumatic connector 5 is communicated with the interior of the upper screen frame 1, the upper screen plate 2 is stretched on the upper surface of the upper screen frame 1 and is sealed, the stretching is a common technical means in the field, and the edge of the screen plate is required to be glued or fixed on the edge of the screen frame in other modes by certain equipment; the edge part of the upper screen 2 is glued and sealed so that only the middle part forms a ventilation area 6 for absorbing products; the inner edge part of the lower screen frame 3 protrudes upwards to form a mounting frame 7, the mounting frame 7 is arranged inside the upper screen frame 1, a gap is reserved between the outer wall of the mounting frame 7 and the inner wall of the upper screen frame 1, the lower screen plate 4 is stretched on the upper surface of the mounting frame 7 and sealed, all the lower screen plate 4 is coated with glue so that all the screen surfaces are non-breathable areas, the distance between the upper screen plate 2 and the lower screen plate 4 is 0.2-0.5 mm and can be 0.2mm or 0.3mm or 0.4mm or 0.5mm, a gauze 8 is arranged between the upper screen plate and the lower screen plate, the deformation resistance of the lower screen plate 4 is lower than that of the upper screen plate 2, and the upper surface of the part, located outside the mounting frame 7, of the lower screen frame 3 is connected with the lower surface of the upper screen frame 1 in a sealing mode through a sealing.
As a preferable installation mode for the sealed connection of the upper screen frame 1 and the lower screen frame 3, the upper surface of the part, which is positioned outside the installation frame 7, of the lower screen frame 3 is provided with an annular groove which is arranged at an interval with the installation frame 7, a sealing ring 9 is embedded in the annular groove, and the lower screen frame 3 and the upper screen frame 1 are tightly pressed through a bolt 10. The purpose of the spacing arrangement is to locate the sealing ring 9 in the middle of the contact surface of the upper/lower net frame 3, and if the sealing ring is arranged at the edge of the contact surface, poor sealing is easy to occur. In other embodiments, other mounting means of the sealing ring 9 commonly used in the art may be adopted, for example, the sealing ring 9 is embedded on the lower surface of the upper screen frame 1.
Preferably, the upper screen plate 2 and the lower screen plate 4 are 280-320 meshes, the gauze 8 is 50-80 meshes, the tension of the upper screen plate 2 is 22-25N, and the tension of the lower screen plate 4 is 8-12N. The mesh number of the screen plate influences the mechanical property of the screen plate, the screen plate can well complete the adsorption function when the mesh number is 280-320 meshes, and the screen plate is particularly suitable for adsorption of graphite flakes and can be 280 meshes, 300 meshes or 320 meshes. Too many meshes of the screen 8 easily cause the phenomenon of blocked ventilation, too few meshes easily cause the upper and lower screen plates 4 to be adsorbed together, and the mesh adopts 50-80 meshes as the optimal range, and can be 50 meshes, 70 meshes or 80 meshes. If the difference of the anti-deformation capabilities of the upper screen plate and the lower screen plate 4 is too large, the lower screen plate 4 is too easy to deform during air suction, and the requirement that negative pressure cannot be overcome even if the upper screen plate and the lower screen plate 4 are attached together easily occurs; if the difference of the anti-deformation capability of the upper screen plate and the lower screen plate 4 is too small, the upper screen plate and the lower screen plate 4 are easy to deform simultaneously during air extraction, the tension of the upper screen plate 2 and the tension of the lower screen plate 4 are stretched within the range and are matched with the mesh number, so that the lower screen plate 4 is ensured to deform preferentially during air extraction, the upper screen plate 2 deforms slightly or does not deform, the tension of the upper screen plate 2 stretched can be 22 or 24 or 25N, and the tension of the lower screen plate 4 stretched can be 8 or 10 or 12N.
Preferably, the upper screen frame 1 and the lower screen frame 3 are both in a square frame structure, and the part of the lower screen frame 3 located outside the mounting frame 7 is matched with the upper screen frame 1. The square frame is a frame-shaped structure with rectangular outer wall and rectangular inner wall, and the rectangle of the inner wall and the rectangle of the outer wall of the square frame have the same shape and are coaxial. The square frame can more adapt to the structural requirement of current adsorption equipment, and can form less clearance between the outer wall of installing frame 7 and the inner wall of upper net frame 1, has saved the gas volume of usefulness of bleeding. In other embodiments, the upper/lower frames 3 may be circular frames or other frames.
The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. The utility model provides a half tone vacuum adsorption mechanism of preapring for an unfavorable turn of events shape which characterized in that: comprises an upper screen frame (1), an upper screen plate (2), a lower screen frame (3) and a lower screen plate (4); the side wall of the upper screen frame (1) is provided with at least one pneumatic connector (5), the pneumatic connector (5) is communicated with the inside of the upper screen frame (1), the upper screen plate (2) is stretched on the upper surface of the upper screen frame (1) and is sealed, and the edge part of the upper screen plate (2) is coated with glue and sealed to form a ventilation area (6) for adsorbing products only in the middle; the inner edge part of the lower screen frame (3) protrudes upwards to form a mounting frame (7), the mounting frame (7) is arranged inside the upper screen frame (1), a gap is reserved between the outer wall of the mounting frame (7) and the inner wall of the upper screen frame (1), the lower screen (4) is stretched on the upper surface of the mounting frame (7) and sealed, all the screen (4) is coated with glue, all the panels are non-breathable areas, the distance between the upper screen (2) and the lower screen (4) is 0.2-0.5 mm, screen gauze (8) is placed between the upper screen and the lower screen, the deformation resistance of the lower screen (4) is lower than that of the upper screen (2), and the upper surface of the part, located outside the mounting frame (7), of the lower screen (3) is connected with the lower surface of the upper screen (1) in a sealing mode through a sealing ring (9).
2. The deformation-preventing vacuum adsorption mechanism for the screen printing plate as claimed in claim 1, wherein: the upper surface of the part, located on the outer side of the mounting frame (7), of the lower net frame (3) is provided with an annular groove which is arranged at an interval with the mounting frame (7), a sealing ring (9) is embedded in the annular groove, and the lower net frame (3) and the upper net frame (1) are pressed tightly through a bolt (10).
3. The deformation-preventing vacuum adsorption mechanism for the screen printing plate as claimed in claim 1, wherein: the upper screen plate (2) and the lower screen plate (4) are 280-320 meshes, the screen (8) is 50-80 meshes, the tension of the upper screen plate (2) is 22-25N, and the tension of the lower screen plate (4) is 8-12N.
4. The deformation-preventing vacuum adsorption mechanism for the screen printing plate as claimed in any one of claims 1 to 3, wherein: the upper screen frame (1) and the lower screen frame (3) are both of a square frame structure, and the part of the lower screen frame (3) located on the outer side of the mounting frame (7) is matched with the upper screen frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725439.6A CN111746099B (en) | 2020-07-24 | 2020-07-24 | Anti-deformation screen vacuum adsorption mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725439.6A CN111746099B (en) | 2020-07-24 | 2020-07-24 | Anti-deformation screen vacuum adsorption mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111746099A true CN111746099A (en) | 2020-10-09 |
| CN111746099B CN111746099B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725439.6A Active CN111746099B (en) | 2020-07-24 | 2020-07-24 | Anti-deformation screen vacuum adsorption mechanism |
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| Country | Link |
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| CN (1) | CN111746099B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407513A (en) * | 2022-01-06 | 2022-04-29 | Tcl华星光电技术有限公司 | Printing screen and method for producing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004145033A (en) * | 2002-10-24 | 2004-05-20 | Ushio U-Tech Inc | Exposure apparatus for block copy material for screen printing |
| CN103935037A (en) * | 2014-04-09 | 2014-07-23 | 西安交通大学 | Integrated powder color 3D (Three-Dimensional) printer |
| CN110668246A (en) * | 2019-10-30 | 2020-01-10 | 深圳奥图美特技术有限公司 | Screen printing plate film pasting device capable of pasting 3D curved surface product |
| CN110723588A (en) * | 2019-11-14 | 2020-01-24 | 深圳奥图美特技术有限公司 | Vacuum pump-free small-size screen printing plate film pasting device |
| CN212446684U (en) * | 2020-07-24 | 2021-02-02 | 中电科风华信息装备股份有限公司 | Deformation-preventing vacuum adsorption mechanism for screen printing plate |
-
2020
- 2020-07-24 CN CN202010725439.6A patent/CN111746099B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004145033A (en) * | 2002-10-24 | 2004-05-20 | Ushio U-Tech Inc | Exposure apparatus for block copy material for screen printing |
| CN103935037A (en) * | 2014-04-09 | 2014-07-23 | 西安交通大学 | Integrated powder color 3D (Three-Dimensional) printer |
| CN110668246A (en) * | 2019-10-30 | 2020-01-10 | 深圳奥图美特技术有限公司 | Screen printing plate film pasting device capable of pasting 3D curved surface product |
| CN110723588A (en) * | 2019-11-14 | 2020-01-24 | 深圳奥图美特技术有限公司 | Vacuum pump-free small-size screen printing plate film pasting device |
| CN212446684U (en) * | 2020-07-24 | 2021-02-02 | 中电科风华信息装备股份有限公司 | Deformation-preventing vacuum adsorption mechanism for screen printing plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407513A (en) * | 2022-01-06 | 2022-04-29 | Tcl华星光电技术有限公司 | Printing screen and method for producing the same |
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| Publication number | Publication date |
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| CN111746099B (en) | 2024-07-02 |
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