CN113147162A - Printing platen, colloid recognition structure and elliptical printing machine - Google Patents
Printing platen, colloid recognition structure and elliptical printing machine Download PDFInfo
- Publication number
- CN113147162A CN113147162A CN202110360630.XA CN202110360630A CN113147162A CN 113147162 A CN113147162 A CN 113147162A CN 202110360630 A CN202110360630 A CN 202110360630A CN 113147162 A CN113147162 A CN 113147162A
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- China
- Prior art keywords
- light
- light source
- printing
- colloid
- image acquisition
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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
- B41F15/16—Printing tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handling Of Sheets (AREA)
Abstract
The present invention provides a printing platen comprising: the table plate comprises a table plate body and a light source arranged at the bottom of the table plate body; the bedplate body is provided with a light transmission part and an image acquisition area positioned at the top of the light transmission part, the light source is correspondingly positioned at the bottom of the light transmission part, and light rays emitted by the light source enter the image acquisition area after passing through the light transmission part. Compared with the prior art, the printing table plate can provide light source irradiation at the bottom of a printing stock, and the light rays at the positions with colloid and the positions without colloid in the image acquisition area are different, so that the colloid is easier to identify.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a printing platen, a colloid recognition structure and an elliptical printing machine.
Background
In screen printing, the marks printed on the substrate by the printing device are often picked up by a vision system and the position of the frame of the printing device is then adjusted according to the deviation of the marks from a reference. However, in the screen printing process, the printing primer paste is required to be used for increasing the adhesive force of other pastes on the clothing material and preventing the printed patterns from falling off; the currently commonly used priming adhesive cement is colorless and transparent, and cannot form obvious difference with a printing stock, so that the pattern of the priming adhesive cement in an image is difficult to identify, and the alignment data obtained by a vision system has errors, thereby influencing the accuracy of alignment and registration of a screen frame.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a printing bedplate, a colloid recognition structure and an elliptical printing machine.
One embodiment of the present invention provides a printing platen comprising: the table plate comprises a table plate body and a light source arranged at the bottom of the table plate body;
the bedplate body is provided with a light transmission part and an image acquisition area positioned at the top of the light transmission part, the light source is correspondingly positioned at the bottom of the light transmission part, and light rays emitted by the light source enter the image acquisition area after passing through the light transmission part.
Compared with the prior art, the printing table plate can provide light source irradiation at the bottom of a printing stock, and the light rays at the positions with colloid and the positions without colloid in the image acquisition area are different, so that the colloid is easier to identify.
Further, the light source is an annular light source, and the light source is arranged around the image acquisition area.
Further, the bedplate body is a light-transmitting bedplate body.
Further, the bottom of the bedplate body is provided with an installation groove, and the light source is arranged in the installation groove.
Further, the light transmittance of the light-transmitting portion is different from the light transmittance of the colloid generated in the image pickup area.
Further, the light-transmitting portion is made of PMMA, PC, PS or inorganic glass.
Furthermore, a balancing weight is further arranged on the bedplate body.
Another embodiment of the present invention provides a colloid recognition structure, comprising: the light emitted by the light source sequentially passes through the light transmission part and the image acquisition area and then enters the acquisition end of the image acquisition device.
Further, the colloid recognition structure comprises at least two image acquisition devices, and at least two light sources in one-to-one correspondence with the image acquisition devices are arranged at the bottom of the bedplate.
Another embodiment of the present invention provides an elliptical printing machine, comprising: the bedplate body is arranged on the guide rail, the driving mechanism drives the bedplate body to move along the guide rail, and the image acquisition device is arranged on the rack and connected with the image processing device.
In order that the invention may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a side of a printing platen according to one embodiment of the present invention;
fig. 2 is a schematic view of the top of a printing platen according to another embodiment of the present invention.
Description of reference numerals:
10. a platen body; 11. a light-transmitting portion; 12. mounting grooves; 20. a light source; 30. a guide rail connecting portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Please refer to fig. 1, which is a schematic structural diagram of one side of a printing platen according to an embodiment of the present invention, the printing platen includes: a table plate body 10 and a light source 20 arranged at the bottom of the table plate body 10.
The bedplate body 10 is provided with a light transmission part 11 and an image acquisition area positioned at the top of the light transmission part 11, the light source 20 is correspondingly positioned at the bottom of the light transmission part 11, and light rays emitted by the light source 20 enter the image acquisition area after passing through the light transmission part 11. The printing device of the elliptical printing machine needs to replace printed patterns through the screen frames, each screen frame only corresponds to one type of printing slurry, the printing slurry needs to be replaced and cleaned after being used if the printing slurry needs to be replaced, and the screen frames need to be aligned due to the fact that the positions of the screen frames are not aligned with those of other screen frames after being replaced every time. In the alignment of the frame, the printing paste is usually printed on the printing material on the printing platen with a marking pattern by the frame, and the frame position is reflected by the position of the marking pattern. Therefore, when the alignment of the screen frame is aligned, the printing stock can be placed on the platen body 10, part or all of the printing stock is located in the image acquisition area, and then the colloid pattern is printed on the printing stock located in the image acquisition area.
Referring to fig. 2, which is a schematic structural view of the top of the printing platen according to another embodiment of the present invention, since the light source is partially visible due to the light-transmitting portion, the light source is shown in fig. 2 so as to indicate the position of the light source, and in some alternative embodiments, the light source 20 is a ring-shaped light source 20, and the light source 20 is arranged around the image capturing area, so as to improve the uniformity of light in the image capturing area.
The position of the light transmitting portion 11 may be appropriately designed according to actual needs, for example, the light transmitting portion 11 may be disposed only at a part of the platen body 10, in which case, the printing material may be partially positioned on the light transmitting portion 11 and partially positioned at another position of the platen body 10, and the printing material should be generated at the position of the light transmitting portion 11 when printing the paste. Of course, since the image capturing device needs to be relatively disposed above the light-transmitting portion 11, when the image capturing device needs to be adjusted, the light source 20 needs to be correspondingly adjusted, but it is troublesome that the light-transmitting portion 11 cannot move, and the light-transmitting portion 11 may be set larger to provide some adjustable margin, or the platen body 10 may be made of a light-transmitting material, so that the platen body 10 is entirely light-transmitting. Alternatively, the light-transmitting portion 11 may be a movable light-transmitting portion 11.
In some alternative embodiments, the bottom of the table plate body 10 is provided with a mounting groove 12, and the light source 20 is disposed in the mounting groove 12, so as to facilitate the stable mounting of the light source 20. In order to adjust the light source 20 adaptively, so as to prevent the printed glue from deviating from the light source 20 and not being irradiated sufficiently, the light source 20 may be movably disposed in the mounting groove 12, so that the light source may slide along one direction, and the light source 20 may be moved by disposing a sliding rail or a sliding groove in the mounting groove 12, without being limited thereto.
In some alternative embodiments, the bottom of the bedplate body 10 is further provided with a guide rail connecting part 30 for connecting with a guide rail, and the guide rail connecting part 30 also plays a role of supporting the bedplate body 10.
In some alternative embodiments, the light transmittance of the light-transmitting portion 11 is different from the light transmittance of the colloid generated in the image capturing area, and the difference between the positions with colloid and the positions without colloid in the image captured by the image capturing device can be increased by increasing the difference between the light transmittance of the light-transmitting portion 11 and the light transmittance of the colloid generated in the image capturing area.
In some alternative embodiments, the light-transmitting portion 11 is made of PMMA, PC, PS or inorganic glass, but other light-transmitting materials can be used without being limited to the above materials.
When the light-transmitting portion 11 is relatively light, the bedplate body 10 may be not light enough and may shake, and particularly when the whole bedplate body 10 is made of a light-transmitting material with a low density, the bedplate body 10 is relatively light, and therefore in some alternative embodiments, a balancing weight is further disposed on the bedplate body 10, so that the weight of the bedplate body 10 is increased, and the stability of the bedplate body 10 is further improved.
The printing platen described above can be applied to a colloid recognition structure, which comprises: the collecting end of the image collecting device faces the image collecting area, and light emitted by the light source 20 sequentially passes through the light-transmitting part 11 and the image collecting area and then enters the collecting end of the image collecting device.
In some optional embodiments, the colloid recognition structure includes at least two image capturing devices, and the bottom of the platen is provided with at least two light sources 20 corresponding to the image capturing devices one by one, and at this time, the platen body 10 should have two image capturing areas. In order to increase the distance between the plurality of image capturing regions and avoid overlapping of the plurality of image capturing regions, the light transmitting portion 11 may be increased in area or number as needed.
The colloid identification structure can be applied to an elliptical printing machine, and the elliptical printing machine comprises: the table plate comprises a frame, a guide rail arranged on the frame, a driving mechanism arranged on the frame, a plurality of printing devices arranged on the frame and along the guide rail, an image processing device and the colloid recognition structure, wherein the table plate body 10 is arranged on the guide rail, the driving mechanism drives the table plate body 10 to move along the guide rail, the image acquisition device is arranged on the frame and connected with the image processing device, the position of the colloid is determined according to the image with the colloid acquired by the image acquisition device, the offset distance between the colloid position and a reference position is determined, and the position of a screen frame of the printing device is adjusted according to the offset distance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A printing platen, comprising: the table plate comprises a table plate body and a light source arranged at the bottom of the table plate body;
the bedplate body is provided with a light transmission part and an image acquisition area positioned at the top of the light transmission part, the light source is correspondingly positioned at the bottom of the light transmission part, and light rays emitted by the light source enter the image acquisition area after passing through the light transmission part.
2. A printing platen according to claim 1, wherein: the light source is an annular light source, and the light source is arranged around the image acquisition area.
3. A printing platen according to claim 1, wherein: the bedplate body is a transparent bedplate body.
4. A printing platen according to claim 1, wherein: the bottom of the bedplate body is provided with an installation groove, and the light source is arranged in the installation groove.
5. A printing platen according to any one of claims 1 to 4, wherein: the light transmittance of the light-transmitting portion is different from the light transmittance of the colloid generated in the image capturing area.
6. A printing platen according to claim 1, wherein: the light transmission part is made of PMMA, PC, PS or inorganic glass.
7. A printing platen according to any one of claims 1 or 6, wherein: the bedplate body is also provided with a balancing weight.
8. A colloid identification structure, comprising: an image capturing device and a printing platen according to any of claims 1 to 7, wherein a capturing end of the image capturing device faces the image capturing area, and light from the light source enters the capturing end of the image capturing device after passing through the light transmitting portion and the image capturing area in sequence.
9. A printing platen according to claim 8, wherein: the colloid recognition structure comprises at least two image acquisition devices, and at least two light sources in one-to-one correspondence with the image acquisition devices are arranged at the bottom of the bedplate.
10. An elliptical printing machine, comprising: the colloid recognition structure comprises a machine frame, a guide rail arranged on the machine frame, a driving mechanism arranged on the machine frame, a plurality of printing devices arranged on the machine frame and along the guide rail, an image processing device and a colloid recognition structure according to any one of claims 8 or 9, wherein the bedplate body is arranged on the guide rail, the driving mechanism drives the bedplate body to move along the guide rail, and the image acquisition device is arranged on the machine frame and connected with the image processing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360630.XA CN113147162A (en) | 2021-04-02 | 2021-04-02 | Printing platen, colloid recognition structure and elliptical printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110360630.XA CN113147162A (en) | 2021-04-02 | 2021-04-02 | Printing platen, colloid recognition structure and elliptical printing machine |
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| Publication Number | Publication Date |
|---|---|
| CN113147162A true CN113147162A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110360630.XA Pending CN113147162A (en) | 2021-04-02 | 2021-04-02 | Printing platen, colloid recognition structure and elliptical printing machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012104928A (en) * | 2010-11-08 | 2012-05-31 | Fuji Xerox Co Ltd | Image reading apparatus and image forming apparatus |
| EP2801816A2 (en) * | 2013-05-07 | 2014-11-12 | WiTrins s.r.o. | Method and device for the optical analysis of a PCB |
| CN106711074A (en) * | 2017-01-04 | 2017-05-24 | 京东方科技集团股份有限公司 | Substrate processing equipment and alignment control method of to-be-processed substrate |
| CN211165794U (en) * | 2019-09-11 | 2020-08-04 | 广州诚鼎机器人有限公司 | Oval printing machine |
| CN111532014A (en) * | 2020-05-08 | 2020-08-14 | 深圳诚拓数码设备有限公司 | Automatic nesting printing machine and automatic nesting method |
-
2021
- 2021-04-02 CN CN202110360630.XA patent/CN113147162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012104928A (en) * | 2010-11-08 | 2012-05-31 | Fuji Xerox Co Ltd | Image reading apparatus and image forming apparatus |
| EP2801816A2 (en) * | 2013-05-07 | 2014-11-12 | WiTrins s.r.o. | Method and device for the optical analysis of a PCB |
| CN106711074A (en) * | 2017-01-04 | 2017-05-24 | 京东方科技集团股份有限公司 | Substrate processing equipment and alignment control method of to-be-processed substrate |
| CN211165794U (en) * | 2019-09-11 | 2020-08-04 | 广州诚鼎机器人有限公司 | Oval printing machine |
| CN111532014A (en) * | 2020-05-08 | 2020-08-14 | 深圳诚拓数码设备有限公司 | Automatic nesting printing machine and automatic nesting method |
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Application publication date: 20210723 |