CN111204118A - Grid line printing screen plate of solar cell - Google Patents
Grid line printing screen plate of solar cell Download PDFInfo
- Publication number
- CN111204118A CN111204118A CN202010171698.9A CN202010171698A CN111204118A CN 111204118 A CN111204118 A CN 111204118A CN 202010171698 A CN202010171698 A CN 202010171698A CN 111204118 A CN111204118 A CN 111204118A
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- frame
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- frame structure
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- 238000007639 printing Methods 0.000 title claims abstract description 64
- 239000002184 metal Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- 238000007650 screen-printing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Screen Printers (AREA)
Abstract
The invention discloses a grid line printing screen of a solar cell, which comprises a grid structure for printing a grid line; a frame structure detachably connected to the grid structure, for arranging the grid structure on the printing apparatus through the frame structure; the grid structure comprises an annular frame and a silk screen, wherein the edge part of the silk screen is wound and fixed on the annular frame; the frame structure is an annular frame structure; the grid structure is detachably arranged in the inner ring of the frame structure through the annular frame; and when the grid structure is arranged on the frame structure, the wire mesh of the grid structure is aligned with the inner ring of the frame structure. The utility model provides a be detachable between grid structure and the frame construction and connect in the printing half tone, when needs change grid structure, only need pull down grid structure from frame construction and change new grid structure to when having avoided updating grid structure, carry out the problem of relocating to the half tone, and then improve grid line printing efficiency.
Description
Technical Field
The invention relates to the technical field of solar cell manufacturing, in particular to a grid line printing screen of a solar cell.
Background
The solar cell can convert light energy into electric energy and output the electric energy for use. Electric energy generated by the solar cell is mainly collected through grid lines on the surface of the cell, and is transmitted to the welding strip through the main grid lines and finally output. Grid lines on the surface of the solar cell are densely arranged and are slender, so the grid lines are usually formed on the surface of the solar cell in a screen printing mode.
The conventional screen printing plate for printing grid lines on the surface of a solar cell mainly comprises an annular frame structure and a silk screen structure; the edge of the silk screen structure is fixedly connected with the frame structure, and a plane grid structure is pulled open in the inner ring of the frame structure. When in actual printing, the printing equipment enables the screen structure to cover the battery piece by fixedly positioning the frame structure, and then the screen structure is printed with slurry to form the grid line.
However, in the actual printing process, when the printing plate is exploded, the problems of serious paste leakage and the like occur, a new screen printing plate needs to be replaced immediately to perform normal screen printing, but after the screen printing plate is replaced, the screen printing plate needs to be positioned and aligned again, time and labor are consumed, and the printing efficiency is influenced.
Disclosure of Invention
The invention aims to provide a grid line printing screen plate of a solar cell, which simplifies the replacement difficulty of the screen plate and improves the printing efficiency.
In order to solve the above technical problem, the present invention provides a grid line printing screen for a solar cell, including:
a grid structure for printing grid lines;
and a frame structure detachably connected to the grid structure, for the grid structure to be set on a printing apparatus through the frame structure;
the grid structure comprises an annular frame and a silk screen, wherein the edge part of the silk screen is wound and fixed on the annular frame; the frame structure is an annular frame structure; the grid structure is detachably arranged on the frame structure through the annular frame; and when the grid structure is arranged on the frame structure, the wire mesh of the grid structure is over against the inner ring of the frame structure.
In an optional embodiment of the present application, the frame structure is a rectangular structure formed by three first frames and one second frame, lower surfaces of the three first frames are flush, and a lower surface of the second frame is recessed relative to a lower surface of the first frame to form a recessed notch on the lower surface of the frame structure;
the inner side of each first frame is provided with a strip-shaped sliding groove parallel to the length direction of the first frame, and the peripheral part of the annular frame of the grid structure is provided with strip-shaped bulges matched with the strip-shaped sliding grooves; the grid structure can pass through the concave gap, and the strip-shaped bulges are pushed into the strip-shaped sliding groove.
In an optional embodiment of the present application, the end of the first frame connected to the second frame is provided with a scale mark for detecting a position where the lattice structure is pushed into the frame structure.
In an optional embodiment of the present application, a first through hole and a plug capable of being inserted into the first through hole are disposed on the first frame; a second through hole with the same aperture size as the first through hole is formed in the annular frame on the network structure;
when the network structure is arranged on the frame structure, the first through hole is opposite to the second through hole, and the bolt is inserted into the first through hole and the second through hole in a penetrating manner.
In an optional embodiment of the present application, an inner diameter of the inner ring sidewall above the strip-shaped sliding groove in the frame structure is not greater than an inner diameter of the annular frame.
In an alternative embodiment of the present application, the frame structure is a metal frame.
The invention provides a grid line printing screen printing plate of a solar cell, which comprises a grid structure for printing a grid line; a frame structure detachably connected to the grid structure, for arranging the grid structure on the printing apparatus through the frame structure; the grid structure comprises an annular frame and a silk screen, wherein the edge part of the silk screen is wound and fixed on the annular frame; the frame structure is an annular frame structure; the grid structure is detachably arranged in the inner ring of the frame structure through the annular frame; and when the grid structure is arranged on the frame structure, the wire mesh of the grid structure is aligned with the inner ring of the frame structure.
The grid structure and the frame structure in the printing screen are detachably connected, and in the actual printing process, the printing equipment aligns the grid structure by positioning and aligning the frame structure; when the grid structure needs to be replaced, the grid structure is only required to be detached from the frame structure to replace a new grid structure, the fixed relation, the position and the like between the printing equipment and the frame structure do not move, the connection position of the grid structure on the frame structure is determined, and the problem of alignment and positioning does not exist, so that the problem of repositioning the screen printing plate when the grid structure is updated is avoided, and the grid line printing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a grid line printing screen of a solar cell provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a frame structure provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a grid structure provided in an embodiment of the present application;
fig. 4 is a schematic installation diagram of a grid structure and a frame structure provided in an embodiment of the present application.
Detailed Description
The core of the invention is to provide the grid line printing screen printing plate of the solar cell, the grid structure in the screen printing plate is detachably connected with the frame structure, when the grid structure is replaced, the positioning position of the frame structure is not changed, only the grid structure is replaced, the problem of repositioning after the grid structure is updated is avoided, the replacement procedure of the grid structure is simplified, and the printing efficiency is improved.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a grid line printing screen of a solar cell provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of a frame provided in an embodiment of the present application, and fig. 3 is a schematic structural diagram of a grid provided in an embodiment of the present application, where the printing screen may include:
a grid structure 1 for printing grid lines;
a frame structure 2 detachably connected to the lattice structure 1, for arranging the lattice structure 1 on the printing apparatus through the frame structure 2;
the grid structure 1 comprises an annular frame 12 and a silk screen 11, wherein the edge part of the silk screen is wound and fixed on the annular frame 12; the frame structure 2 is an annular frame structure; the grid structure 1 is detachably arranged in the inner ring of the frame structure 2 by means of an annular rim 12; and when the lattice structure 1 is arranged on the frame structure 2, the wire mesh 11 of the lattice structure 1 is directed against the inner ring of the frame structure 2.
Alternatively, for the frame structure 2, a metal frame structure may be employed.
Specifically, when actual printing is performed, the grid structure 1 is arranged on the frame structure 2, the silk screen 11 in the grid structure 1 is over against the inside of the ring of the frame structure 2, the frame structure 2 is installed on the printing equipment, and the printing equipment drives the screen printing plate to move so as to realize alignment of the grid structure 1 and the battery piece.
When the grid structure 1 is damaged during printing and needs to be replaced, the grid structure 1 and the frame structure 2 in this embodiment are detachably mounted. Therefore, when the grid structure 1 is damaged, the grid structure 1 can be detached from the frame structure 2, and a new grid structure 1 is mounted on the frame structure 2, because the mounting position of the grid structure 1 on the frame structure 1 is fixed, and complicated alignment is not needed, the mounting procedure of the grid structure 1 is simplified.
At present, in the printing screen in the prior art, the edge of the screen is generally directly wound on the frame structure, and in practical application, the frame structure is installed on the printing equipment to realize the installation of the printing screen.
Compared with the prior art, the screen 11 in the present application is fixed on the annular frame 12, and forms the grid structure 1 together with the annular frame 12, wherein the structure of the annular frame 12 is smaller and thinner than that of the frame structure 2, as long as the screen 11 can be supported into a plane structure; when the lattice structure 1 is mounted on the frame structure 2, this is achieved by the annular rim 12 being detachably arranged on the frame structure 2. When the new grid structure 1 is replaced by the printing screen, the printing equipment does not need to be moved, but the printing equipment is kept still, and the grid structure 1 on the frame structure 2 is directly replaced, so that the positioning operation during replacement of the grid structure 1 is simplified; in addition, need change whole printing half tone when changing to the net among the prior art, and utilize the split type structure of grid structure 1 and frame construction 2 in this application, only change grid structure 1 part, improve frame construction 2's utilization ratio at to a great extent, and then reduce printing half tone's use cost.
In summary, in the application, the grid structure 1 and the frame structure 2 are mounted in the detachable split structure, when the grid structure 1 is damaged during printing, only the grid structure 1 on the frame structure 2 needs to be replaced, and the printing screen is not required to be integrally replaced by moving the printing equipment, so that the operation of re-aligning the printing screen after the grid structure 1 is replaced is avoided, the grid line printing difficulty of the solar cell is simplified, and the printing efficiency is improved; and the frame structure 2 can be repeatedly utilized, which is beneficial to reducing the use cost of the printing screen.
Optionally, in another specific embodiment of the present application, the frame structure may specifically include:
the frame structure 2 is a rectangular structure formed by three first frames 21 and one second frame 22, the lower surfaces of the three first frames 21 are flush, and the lower surface of the second frame 22 is recessed relative to the lower surface of the first frame 21 to form a recessed notch on the lower surface of the frame structure 2;
wherein, the inner side of each first frame 21 is provided with a strip-shaped sliding groove 23 parallel to the length direction of the first frame 21, and the peripheral part of the annular frame of the grid structure 1 is provided with a strip-shaped bulge matched with the strip-shaped sliding groove 23; the grid structure 1 can be pushed into the strip-shaped sliding groove 23 by using the concave gap.
In the actual printing, the frame structure 2 is generally horizontally placed, and the solar cell pieces are placed below the frame structure 2. As shown in fig. 2, the three first frames 21 of the frame structure 2 have the same thickness, and the thickness of one second frame 22 is smaller than that of the first frame 21, so that the frame structure forms a concave notch at the bottom of one side of the second frame. The first frame and the concave gap have a strip-shaped sliding groove 23 on the same plane, and correspondingly, a strip-shaped protrusion is arranged on the outer periphery of the annular frame 12 of the grid structure 1. Therefore, as shown in fig. 4, fig. 4 is a schematic view illustrating an installation of the grid structure and the frame structure provided in the embodiment of the present application, in fig. 4, the grid structure 1 may be horizontally inserted into the frame structure 2 through the concave gap, the strip-shaped protrusions of the grid structure 1 slide in along the strip-shaped sliding grooves 23, and an arrow direction in fig. 4 is a direction in which the grid structure 1 may slide relative to the frame structure 2.
As can be seen from fig. 4, the network structure 1 in this embodiment can be installed on the frame structure 2 by horizontal sliding, so that when the network structure 1 is replaced, the problem that the printed brushes and other components above the frame structure 2 cause obstacles and need to be removed is avoided, and the difficulty in installing the network structure 1 is further simplified.
Further, in another optional embodiment of the present application, the method may further include:
on the first rim 21 of the frame structure 2, at the end connected to the second rim 22, there are provided graduation marks for detecting the position at which the lattice structure 1 is pushed into the frame structure 2.
Considering that in practical application, the grid structure 1 has a plurality of different specifications, the size of the grid structure 1 of each specification is different, and accordingly, the positions of the grid structures 1 of different specifications, which are pushed into the frame structure 2, are also different, so that the first frame 21 can be provided with scale marks, and whether the grid structure 1 is pushed into the correct position is judged by comparing whether the edge of the grid structure 1 is flush with the scale marks.
Of course, other ways of locating the position where the lattice structure 1 is pushed into the frame structure 2 are possible in addition to this. Specifically, in another specific embodiment of the present application, the method may further include:
the first frame 21 of the frame structure 2 is provided with a first through hole 211 and a plug 212 capable of being inserted into the first through hole 211; the annular frame 12 of the network structure 1 is provided with a second through hole 121 having the same aperture size as the first through hole 211.
Because when the network structure 1 is installed on the frame structure 2, the annular frame 12 of the network structure 1 is inserted into the first frame 21, therefore, the first through hole 211 and the second through hole 121 can be respectively arranged on the first frame 21 and the annular frame 12, only when the pushed-in position of the network structure 1 just reaches the preset position, the first through hole 211 just faces the second through hole 121, and the plug 212 can simultaneously penetrate through and be inserted into the first through hole 211 and the second through hole 121, so that the relative positioning of the grid structure 1 and the frame structure 2 can be realized, and the grid structure 1 can not be deviated in the printing process.
In another optional embodiment of the present application, the method may further include:
the inner diameter of the inner annular side wall of the frame structure 2 above the strip-shaped chute 21 is not greater than the inner diameter of the annular rim 12.
As shown in fig. 1, after the network structure 1 is mounted on the frame structure 2, the part of the frame structure 2 above the network structure 1 covers the annular rim 12 of the network structure 1, the inner ring of the frame structure 2 being such that only the wire mesh part is exposed. Because often need be provided with a large amount of recesses on the annular frame 12 of grid structure 1 and be used for fixed silk screen 11 edge, and when actually printing, excessive thick liquids or pile up to the border position of grid structure 1 on the grid structure 1, if grid structure 1 reveals outside, the thick liquids that are difficult to clear up are packed in the recess of annular frame 12 very probably, consequently, frame structure 2 in this application can be fine reduce the clearance degree of difficulty of grid structure 1, and, frame structure 2 top is higher than grid structure 1, also can prevent that thick liquids from outflowing, cause the thick liquids unnecessary extravagant.
It is noted that, herein, relational terms such as first and second, and the like may 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. Furthermore, 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 elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a grid line printing half tone of solar wafer which characterized in that includes:
a grid structure for printing grid lines;
and a frame structure detachably connected to the grid structure, for the grid structure to be set on a printing apparatus through the frame structure;
the grid structure comprises an annular frame and a silk screen, wherein the edge part of the silk screen is wound and fixed on the annular frame; the frame structure is an annular frame structure; the grid structure is detachably arranged on the frame structure through the annular frame; and when the grid structure is arranged on the frame structure, the wire mesh of the grid structure is over against the inner ring of the frame structure.
2. The grid line printing screen of the solar cell piece as claimed in claim 1, wherein the frame structure is a rectangular structure formed by three first frames and one second frame, the lower surfaces of the three first frames are flush, the lower surface of the second frame is recessed relative to the lower surface of the first frame, and a recessed notch is formed on the lower surface of the frame structure;
the inner side of each first frame is provided with a strip-shaped sliding groove parallel to the length direction of the first frame, and the peripheral part of the annular frame of the grid structure is provided with strip-shaped bulges matched with the strip-shaped sliding grooves; the grid structure can pass through the concave gap, and the strip-shaped bulges are pushed into the strip-shaped sliding groove.
3. The grid line printing screen of claim 2, wherein the end of the first frame connected to the second frame is provided with a scale mark for detecting the position of the grid structure pushed into the frame structure.
4. The grid line printing screen of the solar cell piece as claimed in claim 2, wherein the first frame is provided with a first through hole and a plug pin capable of being inserted into the first through hole; a second through hole with the same aperture size as the first through hole is formed in the annular frame on the network structure;
when the network structure is arranged on the frame structure, the first through hole is opposite to the second through hole, and the bolt is inserted into the first through hole and the second through hole in a penetrating manner.
5. The grid line printing screen of claim 2, wherein the inner diameter of the side wall of the inner ring above the strip-shaped sliding groove in the frame structure is not greater than the inner diameter of the annular frame.
6. The grid line printing screen of claim 2, wherein the frame structure is a metal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171698.9A CN111204118A (en) | 2020-03-12 | 2020-03-12 | Grid line printing screen plate of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171698.9A CN111204118A (en) | 2020-03-12 | 2020-03-12 | Grid line printing screen plate of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111204118A true CN111204118A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010171698.9A Pending CN111204118A (en) | 2020-03-12 | 2020-03-12 | Grid line printing screen plate of solar cell |
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| Country | Link |
|---|---|
| CN (1) | CN111204118A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400824A (en) * | 2021-06-24 | 2021-09-17 | 南通漫游通艺术包装有限公司 | Rapid silk-screen printing process |
| CN114193910A (en) * | 2021-12-08 | 2022-03-18 | 广州新晔机械设备有限公司 | Screen printing screen frame structure capable of being pushed and pulled |
| CN117998762A (en) * | 2024-03-21 | 2024-05-07 | 上海展华电子(南通)有限公司 | Circuit board solder resist printing primary and secondary frame |
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| US20080078297A1 (en) * | 2006-09-29 | 2008-04-03 | Masayuki Seto | Printer |
| CN101623950A (en) * | 2008-07-08 | 2010-01-13 | 东远精技工业股份有限公司 | Non-contact screen printing method and non-contact screen printing equipment |
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| CN209930628U (en) * | 2019-04-24 | 2020-01-10 | 江门市众阳电路科技有限公司 | Quick silk screen printing consent half tone |
| CN209971828U (en) * | 2019-03-21 | 2020-01-21 | 常州三立精图光电有限公司 | Make things convenient for two-time printing half tone of combination formula of dismouting |
| CN212097929U (en) * | 2020-03-12 | 2020-12-08 | 浙江晶科能源有限公司 | Grid line printing screen plate of solar cell |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080078297A1 (en) * | 2006-09-29 | 2008-04-03 | Masayuki Seto | Printer |
| CN101623950A (en) * | 2008-07-08 | 2010-01-13 | 东远精技工业股份有限公司 | Non-contact screen printing method and non-contact screen printing equipment |
| CN204547302U (en) * | 2015-02-08 | 2015-08-12 | 江苏盛矽电子科技有限公司 | There is the photovoltaic cell printing screen plate of slurry limit function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400824A (en) * | 2021-06-24 | 2021-09-17 | 南通漫游通艺术包装有限公司 | Rapid silk-screen printing process |
| CN114193910A (en) * | 2021-12-08 | 2022-03-18 | 广州新晔机械设备有限公司 | Screen printing screen frame structure capable of being pushed and pulled |
| CN114193910B (en) * | 2021-12-08 | 2022-08-09 | 广州新晔机械设备有限公司 | Screen printing screen frame structure capable of being pushed and pulled |
| CN117998762A (en) * | 2024-03-21 | 2024-05-07 | 上海展华电子(南通)有限公司 | Circuit board solder resist printing primary and secondary frame |
| CN117998762B (en) * | 2024-03-21 | 2024-09-06 | 上海展华电子(南通)有限公司 | Circuit board solder resist printing primary and secondary frame |
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