CN209920723U - Printing screen structure and printing equipment - Google Patents
Printing screen structure and printing equipment Download PDFInfo
- Publication number
- CN209920723U CN209920723U CN201920627938.4U CN201920627938U CN209920723U CN 209920723 U CN209920723 U CN 209920723U CN 201920627938 U CN201920627938 U CN 201920627938U CN 209920723 U CN209920723 U CN 209920723U
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- printing
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- receiving device
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- 238000007639 printing Methods 0.000 title claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 239000004744 fabric Substances 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000007650 screen-printing Methods 0.000 abstract description 18
- 239000002002 slurry Substances 0.000 abstract description 8
- 238000001459 lithography Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000252254 Catostomidae Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006255 coating slurry Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Screen Printers (AREA)
Abstract
The utility model discloses a printing half tone structure and lithography apparatus relates to screen printing technical field. The printing screen plate structure comprises a screen plate and an alarm assembly, wherein the alarm assembly is arranged on the screen plate and comprises a signal transmitting device used for transmitting a detection signal; and the signal receiving device and the signal transmitting device are arranged on the same side of the screen plate relatively and are used for receiving the detection signal, and the signal receiving device is configured to give an alarm when the detection signal cannot be received. In the structure of the printing screen plate, when the screen plate is normal, the screen plate is tensioned, the signal receiving device and the signal transmitting device are opposite, the signal communication between the signal receiving device and the signal transmitting device is normal, and the signal receiving device does not give out an alarm; when the screen printing plate collapses the net, the tension of the screen printing plate disappears, the signal receiving device cannot receive the detection signal sent by the signal transmitting device, and the signal receiving device sends out an alarm so as to remind a worker to process in time and avoid slurry loss and productivity loss.
Description
Technical Field
The utility model relates to a screen printing technical field especially relates to a printing half tone structure and lithography apparatus.
Background
The screen printing is one of the key steps for preparing the solar cell. Among them, the printing screen plays an important role in screen printing.
The screen printing plate comprises a screen frame, polyester screen cloth and metal screen cloth. The edge of the polyester mesh cloth is connected with the mesh frame, and a hollow-out area is arranged at the center of the polyester mesh cloth to form a graphic area. The metal mesh cloth is arranged below the polyester mesh cloth and shields the hollow area. The metal mesh cloth and the polyester mesh cloth are tensioned in the mesh frame.
Because the metal screen cloth is woven by the steel wire that the line footpath is tens microns and is formed, the steel wire line footpath is superfine, and in the use, the metal screen cloth is very easily punctured by foreign matters such as silicon chip piece, drying furnace oil residue, in case puncture, receives the effect of screen cloth tension, and the metal screen cloth can be torn in the twinkling of an eye, causes the thick liquids that bear on the half tone to drop to the battery piece or print table face on, causes the thick liquids extravagant and influences production efficiency. In the existing production process, the condition of the screen printing plate needs to be observed manually so as to stop the printing equipment in time when the metal mesh collapses. If the worker fails to find and pause the printing equipment in time, the printing equipment still can drive the screen printing plate which is already collapsed to normally operate, so that slurry carried in the screen cloth is scattered on a printing table surface, the machine needs to be stopped for cleaning, and serious capacity loss is caused.
Therefore, it is very important to design a printing screen structure and a printing apparatus capable of automatically detecting whether the screen is broken and alarming to reduce the slurry loss and the productivity loss caused by the broken screen.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a printing half tone structure can in time report to the police when the half tone collapses the net.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a printing half tone structure, includes half tone and warning subassembly, the warning subassembly sets up on the half tone, the warning subassembly includes:
the signal transmitting device is used for transmitting a detection signal; and
the signal receiving device is used for receiving the detection signal, the signal receiving device and the signal transmitting device are arranged on the same side of the screen plate relatively, and the signal receiving device is configured to give an alarm when the detection signal cannot be received.
Wherein the detection signal is an optical signal.
The signal receiving device comprises a power supply, a photoresistor, an alarm element, a triode and a potentiometer, wherein the photoresistor is located in a propagation path of the detection signal, one end of the alarm element is connected with the positive pole of the power supply, the other end of the alarm element is connected with the emitter e of the triode, the collector c of the triode is connected with the negative pole of the power supply, one end of the photoresistor is connected with the positive pole of the power supply, the other end of the photoresistor is connected with the base b of the triode, the base b of the triode is connected with one end of the potentiometer, and the other end of the potentiometer is connected with the negative pole of the power supply.
Wherein, the alarm element comprises a buzzer and/or a warning light.
The alarm assembly is detachably connected with the screen printing plate.
The bottom of the signal transmitting device and the bottom of the signal receiving device are both provided with suckers, and the suckers are adsorbed on the screen printing plate.
The screen printing plate is provided with two positioning mark areas, and the signal transmitting device and the signal receiving device are arranged in the corresponding positioning mark areas.
Wherein, half tone includes:
a screen frame;
the edge of the mesh cloth is connected with the mesh frame, a hollow area is arranged in the center of the mesh cloth, and the alarm assembly is arranged on the mesh cloth; and
the metal net is arranged at the bottom of the screen cloth and shields the hollowed-out area.
Another object of the utility model is to provide a lithography apparatus can in time report to the police when the half tone collapses the net, avoids thick liquids loss and productivity loss.
To achieve the purpose, the utility model adopts the following technical proposal:
a printing device comprises the printing screen plate structure.
Wherein the printing apparatus further comprises:
a printing mechanism; and
the control assembly is electrically connected with the alarm assembly and the printing mechanism respectively, and the control assembly is configured to close the printing mechanism when the alarm assembly gives an alarm.
Has the advantages that: the utility model provides a printing half tone structure and lithography apparatus. In the structure of the printing screen plate, when the screen plate is not broken normally, the screen plate is tensioned, the signal receiving device is opposite to the signal transmitting device, the signal communication between the signal receiving device and the signal transmitting device is normal, and the signal receiving device does not give an alarm; when the screen printing plate collapses the net, the tension of the screen printing plate disappears, so that the fixing surfaces of the signal receiving device and the signal transmitting device are not coplanar, the signal receiving device cannot receive a detection signal sent by the signal transmitting device, and the signal receiving device sends an alarm so as to remind a worker to process in time, thereby avoiding slurry loss and capacity loss.
Drawings
Fig. 1 is a cross-sectional view of a screen plate provided by the present invention;
fig. 2 is a schematic structural diagram of a printing screen structure provided by the present invention;
fig. 3 is a schematic structural diagram of a signal transmitting device provided by the present invention;
fig. 4 is a schematic circuit diagram of a signal receiving apparatus according to the present invention.
Wherein:
1. a screen frame; 2. screen cloth; 21. a hollow-out area; 3. a metal mesh; 41. a signal transmitting device; 411. a signal emitting hole; 42. a signal receiving device; 421. a power source; 422. a photoresistor; 423. an alarm element; 424. a triode; 425. a potentiometer; 43. and (4) sucking discs.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides a printing device which can be used for a printing process in a solar cell preparation process. The printing equipment comprises a printing platform, a printing screen plate structure and a printing mechanism. The printing platform is used for bearing a workpiece to be printed, and in this embodiment, the workpiece may be a silicon wafer. The printing screen plate structure comprises a screen plate, wherein the screen plate is arranged above the printing platform, and a graphic area is arranged on the screen plate. The printing mechanism is arranged above the screen printing plate and used for coating slurry on the screen printing plate, and the slurry is coated on the silicon wafer through the pattern area so as to complete printing.
As shown in fig. 1, the screen printing plate includes a frame 1, a mesh 2 and a metal mesh 3. The net frame 1 is arranged outside the net cloth 2 and used for fixing and tensioning the net cloth 2. The center of screen cloth 2 is provided with fretwork district 21, and the back of screen cloth 2 is provided with metal mesh 3, and metal mesh 3 can shelter from fretwork district 21, and is connected with screen cloth 2. The screen cloth 2 and the metal mesh 3 are in a tensioned state in the screen frame 1. During printing, the silicon wafer is placed on the printing platform and is positioned below the metal net 3. The printing mechanism coats the slurry in the hollow-out area 21, and the slurry is coated on the surface of the silicon wafer through the metal net 3.
In order to form a predetermined pattern on the silicon wafer by the paste, the screen plate further includes an emulsion layer provided on the back surface of the metal mesh 3, the emulsion layer is cut into a predetermined pattern by laser cutting, and the paste penetrates the emulsion layer to form a predetermined print pattern.
Alternatively, the frame 1 may be a rectangular frame made of aluminum or steel, and the frame 1 may be attached to a frame of a printing apparatus. The mesh 2 can be made of polyester polymer materials, has high strength and toughness and is not easy to damage. The metal mesh 3 may be woven from stainless steel wires. The emulsion layer may be made of polyimide, and the emulsion layer may be fixed by hot melting of a high temperature adhesive.
Because the diameter of the steel wire for weaving the metal net 3 is smaller, generally being dozens of microns, the steel wire net is very easy to be punctured by foreign matters such as silicon chip fragments, oil residue of a drying furnace and the like. Once the metal net 3 is punctured, the metal net 3 can be torn instantly under the action of the tension of the net cloth 2. In the prior art, whether the screen is broken needs to be observed manually, if the screen is not found to be broken in time, the printing equipment uses the screen which is already broken to print, so that slurry borne by the screen cloth 2 is scattered on a printing table surface, the machine needs to be stopped for cleaning, and serious capacity loss is caused. And the machine needs to be stopped to clean the printing table top, and workers need to spend about 5min when cleaning one printing table top, so that the production efficiency is seriously influenced, and the capacity loss is caused.
In order to solve the above problem, as shown in fig. 2, in this embodiment, the printing screen structure further includes an alarm component, and the alarm component can detect whether the screen collapses and send out an alarm message in time after the screen collapses, so that a worker can process the screen as soon as possible.
Specifically, the alarm assembly includes a signal emitting device 41 and a signal receiving device 42 which are oppositely arranged, and the signal emitting device 41 and the signal receiving device 42 are both arranged on the front surface of the mesh cloth 2. When the metal mesh 3 is normal, the mesh 2 and the metal mesh 3 are tensioned, so that the signal emitting device 41 and the signal receiving device 42 are installed on the same plane, the detection signal emitted by the signal emitting device 41 can be normally received by the signal receiving device 42, and at this time, the signal receiving device 42 does not give an alarm. When the metal net 3 collapses, the tension of the net cloth 2 disappears, so that the net cloth 2 falls down, the positions of the signal receiving device 42 and the signal transmitting device 41 change, the signal receiving device 42 cannot receive the detection signal sent by the signal transmitting device 41, and the signal receiving device 42 sends an alarm to remind a worker that the screen printing plate collapses and needs to be stopped for maintenance.
In this embodiment, can in time discover that the half tone collapses through setting up the alarm subassembly, do not need artifical the observation, reduce working strength, avoid causing thick liquids extravagant and productivity loss because of the staff does not in time discover to collapse the net.
Alternatively, in this embodiment, the detection signal emitted by the signal emitting device 41 may be an optical signal, such as laser or infrared. The optical signals are more sensitive to the change of the propagation path, and the inclination of the surface of the mesh 2 staggers the positions of the signal receiving device 42 and the signal receiving device 42, so that an alarm can be given out in time.
As shown in fig. 3, the signal emitting device 41 is provided with a signal emitting hole 411 for emitting a detection signal. The signal receiving device 42 is correspondingly provided with a signal receiving hole, and when the mesh cloth 2 is tensioned, the signal emitting hole 411 and the signal receiving hole are arranged oppositely.
In order to make the alarm assembly reusable, the alarm assembly and the mesh 2 can be detachably connected. Alternatively, the signal receiving device 42 and the signal emitting device 41 may be fixed to the mesh 2 by suction. Specifically, the bottoms of the signal receiving device 42 and the signal transmitting device 41 can be provided with the suction cup 43, and the suction cup 43 is fixed on the mesh 2 in a suction manner, so that the fixing manner is simple, the disassembly is convenient, and the mesh 2 cannot be damaged.
In order to ensure the position accuracy of the signal receiving device 42 and the signal transmitting device 41 when the alarm assembly is installed, two positioning mark areas can be arranged on the mesh 2, and the signal transmitting device 41 and the signal receiving device 42 are arranged in the corresponding positioning mark areas, which is beneficial to improving the positioning accuracy of the alarm assembly.
As shown in fig. 4, a detection circuit is disposed in the signal receiving device 42, and the detection circuit includes a power supply 421, a photo resistor 422, an alarm element 423, a transistor 424, and a potentiometer 425. The photo-resistor 422 is located in the propagation path of the detection signal. One end of the alarm element 423 is connected to the positive electrode of the power source 421, the other end of the alarm element 423 is connected to the emitter e of the transistor 424, and the collector c of the transistor 424 is connected to the negative electrode of the power source 421. One end of the photosensitive component is connected with the anode of the power supply 421, the other end is connected with the base b of the triode 424, the base b of the triode 424 is connected with one end of the potentiometer 425, and the other end of the potentiometer 425 is connected with the cathode of the battery.
When the mesh 2 is tensioned, the signal receiving device 42 can receive the detection signal emitted by the signal emitting device 41. The detection signal irradiates on the photoresistor 422, and according to the characteristic that the resistance value of the photoresistor 422 is reduced under the illumination effect, the resistance value of the photoresistor 422 is very small, so that the voltage of the base electrode b of the triode 424 is close to the voltage of the power supply 421, the triode 424 has a high resistance value, no voltage exists at two ends of the alarm element 423, and the signal receiving device 42 does not give an alarm.
When the screen is broken, the signal receiving device 42 and the signal transmitting device 41 are dislocated, the photo resistor 422 cannot receive the detection signal, the resistance value of the photo resistor 422 is increased, so that a large voltage difference exists between the base b voltage of the triode 424 and the voltage of the power supply 421, voltage exists at two ends of the alarm element 423, and the alarm element 423 gives an alarm.
Optionally, the alarm element 423 may include a buzzer and/or a warning light to alert the staff to the timely treatment by beeping and/or lighting.
In other embodiments, the alarm component may have other structures as long as it can detect the breaking of the screen and alarm in time.
Optionally, the printing device may further include a control component, the control component is electrically connected to the alarm component and the printing mechanism, and the control component may control start and stop of the printing mechanism according to whether the alarm component gives an alarm. In order to avoid untimely processing of workers, after the alarm component gives an alarm, the control component can control the printing mechanism to stop working, so that unnecessary loss is avoided.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a printing half tone structure which characterized in that, includes half tone and warning subassembly, the warning subassembly sets up on the half tone, the warning subassembly includes:
a signal emitting device (41) for emitting a detection signal; and
the signal receiving device (42) is used for receiving the detection signal, the signal receiving device (42) and the signal emitting device (41) are arranged on the same side of the screen plate relatively, and the signal receiving device (42) is configured to give an alarm when the detection signal cannot be received.
2. The printing screen structure of claim 1, wherein the detection signal is an optical signal.
3. The printing screen structure of claim 2, wherein the signal receiving device (42) comprises a power supply (421), a photo resistor (422), an alarm element (423), a transistor (424) and a potentiometer (425), the photoresistor (422) is positioned in a propagation path of the detection signal, one end of the alarm element (423) is connected with the positive pole of the power supply (421), the other end of the alarm element (423) is connected with an emitter e of the triode (424), the collector c of the triode (424) is connected with the negative pole of the power supply (421), one end of the photoresistor (422) is connected with the positive pole of the power supply (421), the other end of the photoresistor (422) is connected with the base b of the triode (424), the base b of the triode (424) is connected with one end of the potentiometer (425), the other end of the potentiometer (425) is connected with the negative electrode of the power supply (421).
4. The printing screen structure of claim 3, wherein the alarm element (423) comprises a buzzer and/or a warning light.
5. The printing screen structure of any one of claims 1 to 4, wherein the alarm assembly is removably connected to the screen.
6. The printing screen structure of claim 5, wherein the signal emitting device (41) and the signal receiving device (42) are provided with suction cups (43) at the bottoms thereof, and the suction cups (43) are attached to the screens.
7. The printing screen structure of claim 5, wherein two positioning mark areas are provided on the screen, and the signal emitting device (41) and the signal receiving device (42) are provided in the corresponding positioning mark areas.
8. The printing screen structure of any one of claims 1 to 4, wherein the screen comprises:
a screen frame (1);
the edge of the mesh (2) is connected with the mesh frame (1), a hollow area (21) is arranged in the center of the mesh (2), and the alarm component is arranged on the mesh (2); and
the metal net (3) is arranged at the bottom of the screen cloth (2) and shields the hollow area (21).
9. Printing apparatus comprising a printing screen configuration according to any one of claims 1 to 8.
10. The printing apparatus of claim 9, wherein the printing apparatus further comprises:
a printing mechanism; and
the control assembly is electrically connected with the alarm assembly and the printing mechanism respectively, and the control assembly is configured to close the printing mechanism when the alarm assembly gives an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920627938.4U CN209920723U (en) | 2019-05-05 | 2019-05-05 | Printing screen structure and printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920627938.4U CN209920723U (en) | 2019-05-05 | 2019-05-05 | Printing screen structure and printing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN209920723U true CN209920723U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920627938.4U Active CN209920723U (en) | 2019-05-05 | 2019-05-05 | Printing screen structure and printing equipment |
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| Country | Link |
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| CN (1) | CN209920723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366535A (en) * | 2022-08-22 | 2022-11-22 | 江苏润阳世纪光伏科技有限公司 | Real-time monitoring device and monitoring method for screen plate explosion |
-
2019
- 2019-05-05 CN CN201920627938.4U patent/CN209920723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366535A (en) * | 2022-08-22 | 2022-11-22 | 江苏润阳世纪光伏科技有限公司 | Real-time monitoring device and monitoring method for screen plate explosion |
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Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: CSI Cells Co.,Ltd. Patentee after: Atlas sunshine Power Group Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI Cells Co.,Ltd. Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. |