CN108501506B - Screen printing plate and screen printing machine - Google Patents
Screen printing plate and screen printing machine Download PDFInfo
- Publication number
- CN108501506B CN108501506B CN201810214632.6A CN201810214632A CN108501506B CN 108501506 B CN108501506 B CN 108501506B CN 201810214632 A CN201810214632 A CN 201810214632A CN 108501506 B CN108501506 B CN 108501506B
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- CN
- China
- Prior art keywords
- screen
- tension
- scraper
- adjusting device
- levelness
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- Expired - Fee Related
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- 238000007650 screen-printing Methods 0.000 title claims description 27
- 238000007639 printing Methods 0.000 claims abstract description 40
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 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
- B41F15/08—Machines
- B41F15/0804—Machines for printing sheets
- B41F15/0813—Machines for printing sheets with flat screens
- B41F15/0818—Machines for printing sheets with flat screens with a stationary screen and a moving squeegee
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- 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
- B41P2215/50—Screen printing machines for particular purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
Abstract
The invention discloses a screen and a screen printer, wherein the screen comprises a screen frame and a screen positioned in the screen frame, and the screen further comprises: and the tension adjusting device is connected between the silk screen and the screen frame and used for adjusting the levelness of the supported scraper to the scraper to meet the preset condition by adjusting the tension of each position of the supported area of the scraper on the silk screen which is supported and pressed with the scraper during printing. Tension adjusting device connects between silk screen and screen frame, it has the scraper to support to press on the silk screen during printing, support the levelness that presses the scraper of regional each position to adjust through the scraper on the tension adjusting device regulation silk screen, the levelness of pressing the scraper is satisfied the preset condition until the levelness of scraper, this process is not with the levelness that the user both eyes were judged the scraper through observing the position at scraper both ends, the levelness precision of scraper is higher after the adjustment, can ensure better the quality of the light guide plate that the printing becomes.
Description
Technical Field
The text relates to the technical field of display, in particular to a screen printing plate and a screen printing machine.
Background
As shown in fig. 1, the light incident side cross-sectional structure of the backlight module includes a rubber frame 100, a back plate 200, a light bar 300, a reflective sheet 400, a light guide plate 500 and a film material 600; the light guide plate 500 is generally manufactured by printing through a screen printer. The screen printing machine mainly comprises a base, a bare board placing area positioned on the upper surface of the base, a screen positioned above the bare board placing area, and a printing device positioned above the screen, wherein the printing device comprises a scraper and an ink return sheet which are vertically arranged in parallel, and a pressure regulator positioned above the scraper and the ink return sheet. As shown in fig. 2, when the squeegee 700 is pressed down, the screen lines in the screen plate 800 are pressed down and deformed, and the ink 900 is pressed by the squeegee 700 horizontally and is printed on the bare board 510 through the dots in the printing region in the screen lines, thereby manufacturing the light guide plate 500.
The levelness of the scraper 700 influences the amount of ink, the levelness of the scraper 700 is greatly deviated (i.e., one end is higher and the other end is lower), which may cause uneven ink distribution, the levelness of the scraper 700 is adjusted by adjusting the pressure regulator and observing the positions of the two ends of the scraper 700 with naked eyes at present, the levelness of the two ends of the scraper 700 is inconsistent in time length, and finally the light guide plate 500 is printed badly, and reference numeral 810 is a scraper pressing area.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a screen printing plate, which can better adjust the levelness of a scraper during printing, and effectively ensure good quality of a printed light guide plate.
A screen printing machine is also provided herein.
The screen printing plate provided by the embodiment of the invention comprises a screen frame and a screen mesh positioned in the screen frame, and the screen printing plate further comprises: and the tension adjusting device is connected between the silk screen and the screen frame and used for adjusting the levelness of the abutted scraper until the scraper meets a preset condition by adjusting the tension of each position of the abutting area of the scraper on the silk screen abutted with the scraper during printing.
Optionally, the screen further includes: and the tension detection device is connected between the tension adjusting device and the edge of the silk screen or between the tension adjusting device and the screen frame and is used for detecting the tension of each position of the pressing area of the scraper during printing.
Optionally, the screen further includes: and the control device is electrically connected with the tension adjusting device and the tension detecting device and is used for controlling the tension adjusting device according to the tension detected by the tension detecting device during printing.
Optionally, the tension adjusting device and the tension detecting device include multiple sets symmetrically arranged in the circumferential direction of the frame.
Optionally, the silk screen includes a plurality of silk screens of crisscross arrangement of horizontal and vertical, and be connected with 5 ~ 10 silk screens between arbitrary pair of tension adjusting device.
Optionally, the preset conditions are: the difference value of any two of the tensions detected by the tension detection devices is not greater than a preset value.
Optionally, the tension detection device is a tension detection table.
Optionally, the tension adjusting device includes a driving member and a telescopic cylinder, and the driving member is used for driving the telescopic rod of the telescopic cylinder to act.
Optionally, a printing area with dots is arranged in the middle of the screen, and the scraper is pressed against the printing area during printing.
The screen printer provided by the invention comprises the screen printing plate in any embodiment.
Compared with the prior art, the tension adjusting device is connected between the screen mesh and the screen frame, the scraper is pressed on the screen mesh during printing, the tension of each position of the pressing area of the scraper on the screen mesh is adjusted through the tension adjusting device to adjust the levelness of the pressed scraper until the levelness of the scraper meets the preset condition, the levelness of the scraper is judged by observing the positions of the two ends of the scraper through the eyes of a user in the process, the levelness precision of the scraper after adjustment is high, and the good quality of the printed light guide plate can be better ensured.
Further, the tension detection device is connected between the tension adjusting device and the edge of the silk screen or the tension detection device is connected between the tension adjusting device and the screen frame and used for detecting the tension of each position of the pressing area of the scraper during printing so as to better improve the levelness adjusting precision of the scraper.
Furthermore, the control device is electrically connected with the tension adjusting device and the tension detecting device and used for controlling the tension adjusting device according to the tension detected by the tension detecting device during printing, the levelness of the scraper is automatically adjusted, the levelness precision of the scraper is higher after adjustment, and the quality of the printed light guide plate is better.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments herein and are incorporated in and constitute a part of this specification, illustrate embodiments herein and are not to be construed as limiting the embodiments herein.
FIG. 1 is a schematic view of a partial structure of a light incident side of a backlight module according to the related art;
FIG. 2 is a schematic view of a related art doctor blade for screen printing;
fig. 3 is a schematic structural diagram of a screen printing plate according to an embodiment of the present invention;
FIG. 4 is a schematic view of the assembled mesh and tensioning device of FIG. 3;
fig. 5 is a schematic structural diagram of a transverse screen wire of a screen printing plate according to another embodiment of the present invention, and the assembled structure of a corresponding tension adjusting device and a tension detecting device;
fig. 6 is a schematic structural diagram of a transverse screen in a screen printing plate according to still another embodiment of the present invention, and the assembled structure of a corresponding tension adjusting device, a tension detecting device, and a control device.
Wherein, the correspondence between the reference numbers and the part names in fig. 3 to 6 is:
1 screen frame, 2 screen meshes, 21 screen meshes, 3 tension adjusting devices, 4 scrapers, 6 printing areas, 7 tension detecting devices and 8 control devices.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, however, the present disclosure may be practiced otherwise than as specifically described herein, and thus the scope of the present disclosure is not limited by the specific embodiments disclosed below.
The screen and screen printing machine of some embodiments herein are described below with reference to the accompanying drawings.
The screen printing plate provided by the embodiment of the invention, as shown in fig. 3, comprises a screen frame 1 and a screen 2 located in the screen frame 1; as shown in fig. 4, the screen further includes: the tension adjusting device 3 is connected between the screen 2 and the screen frame 1, and is used for adjusting the levelness of the pressed scraper 4 until the scraper 4 meets a preset condition by adjusting the tension of each position of a scraper pressing area (along with the movement of the scraper 4, the position of the scraper pressing area on the screen changes along with the position of the scraper 4) on the screen 2 on which the scraper 4 is pressed during printing.
According to the screen printing plate provided by the invention, the tension adjusting device 3 is connected between the screen 2 and the screen frame 1, the scraper 4 is pressed on the screen 2 during printing, the tension of each position of the pressing area of the scraper on the screen 2 is adjusted through the tension adjusting device 3 to adjust the levelness of the pressed scraper 4 until the levelness of the scraper 4 meets the preset condition, the levelness of the scraper 4 is judged by observing the positions of two ends of the scraper 4 through eyes of a user in the process, the levelness accuracy of the scraper 4 after adjustment is higher, the distribution ratio of ink is better, and the better quality of a printed light guide plate can be ensured.
As shown in fig. 3, a printing area 6 with dots is provided in the middle of the screen 2, and the doctor blade 4 is pressed against the printing area 6 during printing.
Further, as shown in fig. 5, the screen further includes: and a tension detecting device 7 connected between the tension adjusting device 3 and the edge of the screen 2 or between the tension adjusting device 3 and the screen frame 1, for detecting the tension of each position of the pressing area of the scraper during printing.
The tension detection device 7 is connected between the tension adjusting device 3 and the edge of the silk screen 2 or the tension detection device 7 is connected between the tension adjusting device 3 and the screen frame 1 and used for detecting the tension of each position of the abutting area of the scraper during printing so as to better improve the levelness adjusting precision of the scraper 4.
Still further, as shown in fig. 6, the screen further includes: and a control device 8 electrically connected to the tension adjusting device 3 and the tension detecting device 7, for controlling the tension adjusting device 3 based on the tension detected by the tension detecting device 7 at the time of printing.
The control device 8 is electrically connected with the tension adjusting device 3 and the tension detecting device 7 and used for controlling the tension adjusting device 3 according to the tension detected by the tension detecting device 7 during printing, the levelness of the scraper 4 is automatically adjusted, the levelness precision of the scraper 4 is higher after adjustment, and the quality of the printed light guide plate is better.
Specifically, as shown in fig. 3, 5, and 6, the tension adjusting device 3 and the tension detecting device 7 include multiple sets symmetrically arranged in the circumferential direction of the screen frame 1, that is, multiple sets of the tension adjusting device 3 and the tension detecting device 7 are respectively arranged on four frame edges of the screen frame 1, and the multiple sets of the tension adjusting device 3 and the tension detecting device 7 on any set of opposite frame edges of the screen frame 1 are symmetrically arranged with respect to each other, so that the tension measurement at each position of the scraper abutting area is more accurate, and the adjustment of the tension at each position of the scraper abutting area is more facilitated, thereby increasing the debugging speed of the levelness of the scraper 4, and the levelness of the scraper 4 after adjustment can better satisfy the preset condition.
As shown in fig. 3, the screen 2 includes a plurality of screens 21 arranged in a staggered manner, and 5 screens 21 are connected between any pair of tension adjusting devices 3, so that the number of tension adjusting devices 3 used can be reduced, and the manufacturing cost of the screen can be reduced. Of course, 1 mesh wire 21, 2 mesh wires 21, 10 mesh wires 21, 15 mesh wires 21, and the like may be connected between any pair of tension adjusting devices 3, and the purpose of the present application can be achieved, the smaller the number is, the higher the adjustment accuracy is, and the larger the number is, the lower the adjustment accuracy is, and the purpose of the present invention is not departing from the design concept of the present invention, and the details are not described herein, and all of them are within the protection scope of the present application.
Furthermore, the preset conditions are as follows: any two of the tensions detected by the tension detecting devices 7 have a difference value not greater than a preset value. If the preset value is set to 10N, then:
when the difference between any two of the tensions detected by the tension detecting devices 7 is not more than 10N, the mesh 21 does not need to be tensioned or relaxed; when the difference between two tension detected by the tension detection devices 7 is larger than 10N, the ink is unbalanced due to the overlarge difference between the two tension, the difference is within the range of 10N by adjusting the corresponding tension adjusting devices 3, the two pressure balances are achieved, and the ink consumption is kept.
In order to increase the debugging speed, only the relationship between the difference value of the tension detected by the tension detecting devices 7 corresponding to the positions of the two ends of the scraper 4 and the preset value may be determined, and the purpose of the present application may also be achieved, only the accuracy of the levelness of the scraper 4 after adjustment is reduced, but the quality of the manufactured light guide plate may also meet the use requirement, and the purpose of the present invention does not depart from the design concept of the present invention, and is not described herein again, and the present application also falls within the protection scope of the present application.
Specifically, the tension detecting device 7 may be a tension detecting table (for manual and automatic debugging) or a tension sensor (for automatic debugging), and the like, and the purpose of the present application can be achieved without departing from the design concept of the present invention, and therefore, the present application shall not be repeated herein, and all shall fall within the protection scope of the present application.
Furthermore, the tension adjusting device 3 comprises a driving member and a telescopic cylinder, the driving member is used for driving the telescopic rod of the telescopic cylinder to act, namely: the control device 8 controls the action of the driving piece, and the driving piece controls the extending length of the telescopic rod, so that the tension of the mesh 21 is changed. Can be as follows: the driving piece is an air pump, and the telescopic cylinder is an air cylinder; it can also be: the driving piece is an oil pump, and the telescopic cylinder is an oil cylinder.
The middle part of the screen 2 is provided with a printing area 6 with dots, and the scraper 4 is pressed against the printing area 6 during printing.
The invention provides a screen printing machine (not shown in the figures) comprising the screen printing plate in any embodiment.
The screen printer provided by the invention has all the advantages of the screen printing plate described in any embodiment, and details are not repeated herein.
The screen printer can replace the existing manual scraper levelness adjusting process, and can greatly improve the printing productivity and the printing yield of the light guide plate.
In summary, in the screen printing plate provided by the invention, the tension adjusting device is connected between the screen and the screen frame, the screen is pressed with the scraper, the tension adjusting device adjusts the tension of each position of the pressing area of the scraper on the screen to adjust the levelness of the pressed scraper until the levelness of the scraper meets the preset condition, the levelness of the scraper is not judged by observing the positions of the two ends of the scraper through the eyes of a user in the process, the levelness precision of the scraper after adjustment is higher, and the quality of the printed light guide plate can be better ensured to be better.
Further, the tension detection device is connected between the tension adjusting device and the edge of the silk screen or the tension detection device is connected between the tension adjusting device and the screen frame and used for detecting the tension of each position of the pressing area of the scraper during printing so as to better improve the levelness adjusting precision of the scraper.
Furthermore, the control device is electrically connected with the tension adjusting device and the tension detecting device and used for controlling the tension adjusting device according to the tension detected by the tension detecting device during printing, the levelness of the scraper is automatically adjusted, the levelness precision of the scraper is higher after adjustment, and the quality of the printed light guide plate is better.
In the description herein, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
In the description of the specification, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example herein. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein may be limited only by the appended claims.
Claims (7)
1. A screen printing plate comprises a screen frame and a screen mesh positioned in the screen frame; it is characterized in that the screen printing plate further comprises:
the tension adjusting device is connected between the silk screen and the screen frame and used for adjusting the levelness of the pressed scraper until the scraper meets a preset condition by adjusting the tension of each position of the pressing area of the scraper on the silk screen pressed with the scraper during printing;
the tension detection device is connected between the tension adjusting device and the edge of the silk screen or between the tension adjusting device and the screen frame and is used for detecting the tension of each position of the pressing area of the scraper during printing;
the tension adjusting device and the tension detecting device comprise a plurality of groups which are symmetrically arranged in the circumferential direction of the screen frame;
the preset conditions are as follows: the difference value of any two of the tensions detected by the tension detection devices is not greater than a preset value.
2. The screen of claim 1, further comprising:
and the control device is electrically connected with the tension adjusting device and the tension detecting device and is used for controlling the tension adjusting device according to the tension detected by the tension detecting device during printing.
3. The screen according to claim 1, wherein the screen comprises a plurality of screens arranged in a staggered manner, and 5 to 10 screens are connected between any pair of the tension adjusting devices.
4. The screen according to claim 1, wherein the tension detecting device is a tension detecting table.
5. The screen printing plate of any one of claims 1 to 4, wherein the tension adjusting device comprises a driving member and a telescopic cylinder, and the driving member is used for driving a telescopic rod of the telescopic cylinder to act.
6. The screen according to any one of claims 1 to 4, wherein a printing region having dots is provided in the middle of the screen, and a squeegee is pressed against the printing region during printing.
7. A screen printing machine comprising a screen as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214632.6A CN108501506B (en) | 2018-03-15 | 2018-03-15 | Screen printing plate and screen printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214632.6A CN108501506B (en) | 2018-03-15 | 2018-03-15 | Screen printing plate and screen printing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108501506A CN108501506A (en) | 2018-09-07 |
| CN108501506B true CN108501506B (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214632.6A Expired - Fee Related CN108501506B (en) | 2018-03-15 | 2018-03-15 | Screen printing plate and screen printing machine |
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| Country | Link |
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| CN (1) | CN108501506B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724719A (en) * | 2019-01-02 | 2019-05-07 | 江门荣信电路板有限公司 | A kind of halftone tension detection system and its method |
| CN114905850B (en) * | 2022-05-31 | 2024-02-23 | 无锡尚德太阳能电力有限公司 | Method for testing levelness of printing machine |
| CN115091839B (en) * | 2022-07-01 | 2023-08-15 | 无锡尚德太阳能电力有限公司 | Method for determining stability of printing equipment |
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| US4893556A (en) * | 1987-02-23 | 1990-01-16 | Tdk Corporation | Screen printer with double doctor/squeegee, printing pressure sensor and aligning mechanism |
| CN101497255A (en) * | 2007-12-14 | 2009-08-05 | Kba-美创力公司 | Device and method for measuring the screen tension of the screen fabric in a silk screen frame |
| CN102169039A (en) * | 2011-04-26 | 2011-08-31 | 广东省计量科学研究院 | Calibrating device for screen (silk screen) tensiometer for printing |
| CN203396542U (en) * | 2013-08-28 | 2014-01-15 | 苏州莱测检测科技有限公司 | Screen tensiometer calibration device |
| CN203888338U (en) * | 2014-04-18 | 2014-10-22 | 深圳劲嘉彩印集团股份有限公司 | Stretching equipment for silk screen plate making |
| CN204020201U (en) * | 2014-08-04 | 2014-12-17 | 深圳劲嘉彩印集团股份有限公司 | Screen printing apparatus |
| CN204367553U (en) * | 2014-12-18 | 2015-06-03 | 联恒精密机械股份有限公司 | The scraper adjust structure of screen printer |
| CN107672294A (en) * | 2017-11-10 | 2018-02-09 | 京东方科技集团股份有限公司 | The method of silk-screen printing device and the tension force for adjusting its printing screen |
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2018
- 2018-03-15 CN CN201810214632.6A patent/CN108501506B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893556A (en) * | 1987-02-23 | 1990-01-16 | Tdk Corporation | Screen printer with double doctor/squeegee, printing pressure sensor and aligning mechanism |
| CN101497255A (en) * | 2007-12-14 | 2009-08-05 | Kba-美创力公司 | Device and method for measuring the screen tension of the screen fabric in a silk screen frame |
| CN102169039A (en) * | 2011-04-26 | 2011-08-31 | 广东省计量科学研究院 | Calibrating device for screen (silk screen) tensiometer for printing |
| CN203396542U (en) * | 2013-08-28 | 2014-01-15 | 苏州莱测检测科技有限公司 | Screen tensiometer calibration device |
| CN203888338U (en) * | 2014-04-18 | 2014-10-22 | 深圳劲嘉彩印集团股份有限公司 | Stretching equipment for silk screen plate making |
| CN204020201U (en) * | 2014-08-04 | 2014-12-17 | 深圳劲嘉彩印集团股份有限公司 | Screen printing apparatus |
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|---|---|
| CN108501506A (en) | 2018-09-07 |
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Granted publication date: 20200306 |