CN113049108A - Environment-friendly UV printing treatment control system - Google Patents
Environment-friendly UV printing treatment control system Download PDFInfo
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- CN113049108A CN113049108A CN202110234065.2A CN202110234065A CN113049108A CN 113049108 A CN113049108 A CN 113049108A CN 202110234065 A CN202110234065 A CN 202110234065A CN 113049108 A CN113049108 A CN 113049108A
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- operational amplifier
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- inverting input
- controller
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- 238000007639 printing Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004886 process control Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses an environment-friendly UV printing processing control system, which comprises a UV light source, a controller and a temperature monitoring unit, wherein the temperature monitoring unit comprises an infrared temperature sensor, and a detection signal of the infrared temperature sensor is processed by an amplifying filter circuit and a noise reduction isolation circuit in sequence and then is sent into the controller; the amplifying and filtering circuit amplifies and filters output signals of the infrared temperature sensor, clutter interference existing in temperature detection signals is effectively eliminated, the precision of the detection signals is greatly improved, the controller analyzes and calculates received temperature detection signal waveforms to obtain real-time temperature of the surface of a material, and the heat of the UV light source is automatically adjusted, so that the system response speed is high, the temperature control is accurate and effective, and the using value is good.
Description
Technical Field
The invention relates to the technical field of UV printing equipment, in particular to an environment-friendly UV printing treatment control system.
Background
UV printing apparatuses are widely used for printing on a flat surface of a sheet, and UV treatment is performed by passing a raw material through a passage provided with a UV light source (e.g., an LED ultraviolet irradiation lamp) to irradiate a certain amount of UV (ultraviolet) on the surface of the raw material, thereby performing offset printing on the sheet surface by the ultraviolet irradiation.
Heating of the material during UV treatment is unavoidable, so there is a possibility of deformation of the thin raw material, and it is necessary to reduce the heating power of the light source or increase the speed of the conveyor belt. The material temperature when current UV lithography apparatus adopts temperature sensor to come UV to handle usually gathers, because temperature sensor adopts contact thermocouple, thermal resistance type usually, has temperature response speed slow, detects and has situations such as great error, can't satisfy the demand of high-speed UV processing technology, leads to UV printing product to have the quality defect.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above, the present invention is directed to overcoming the drawbacks of the prior art and providing an environmentally friendly UV printing process control system.
The technical scheme for solving the problem is as follows: the utility model provides an environment-friendly UV printing processing control system, includes UV light source, controller and temperature monitoring unit, the temperature monitoring unit includes infrared temperature sensor, infrared temperature sensor's detected signal sends into after amplifying filter circuit and the isolator circuit processing of making an uproar falls in proper order in the controller, the controller is used for adjusting the heating power of UV light source.
Preferably, the amplifying and filtering circuit includes an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to one end of resistors R1 and R2 and a capacitor C1 through a resistor R3, the other end of the resistor R1 and the capacitor C1 is connected to a signal output terminal of the infrared temperature sensor, the other end of the resistor R2 is grounded, a non-inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R1 and a capacitor C1 through a resistor R1, the other end of the resistor R1 is connected to a gate of a MOS transistor Q1, the other end of the capacitor C1 is grounded, an output terminal of the operational amplifier AR1 is connected to the inverting input terminal of the operational amplifier AR1 through a capacitor C1, the one end of the resistor R1 is connected to an emitter of a transistor T1, the other end of the resistor R1 is connected to a drain of the MOS transistor Q1, a base of the transistor T1 and a cathode of the zener diode DZ1, an anode of the zener diode DZ1 is grounded, and a source of the MOS, the resistor R8 is grounded, the collector of the triode T1 is connected with the drain of the MOS tube Q2 through the inductor L1 and the capacitor C4 which are connected in parallel, the source of the MOS tube Q2 is connected with the input end of the Susan noise reduction isolation circuit through the capacitor C5, and the resistor R10 is grounded.
Preferably, the noise reduction isolation circuit comprises an operational amplifier AR2, an inverting input terminal of the operational amplifier AR2 is connected with one end of a resistor R12, a voltage regulator tube DZ2 and an output terminal of the amplification filter circuit, a non-inverting input terminal of the operational amplifier AR2 is grounded through a resistor R11 and a capacitor C6 which are connected in parallel, an output terminal of the operational amplifier AR2 is connected with the other end of the resistor R12 and the other end of the voltage regulator tube DZ2 and is connected with a non-inverting input terminal of the operational amplifier AR3 through a resistor R13, and the inverting input terminal and the output terminal of the operational amplifier AR3 are connected with the controller.
Preferably, the controller is a PLC control module.
Through the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the infrared temperature sensor is arranged above the UV light source, and the surface temperature of the material during UV treatment is acquired in real time in a non-contact manner, so that the device has the advantage of high response speed;
2. the amplifying and filtering circuit amplifies and filters the output signals of the infrared temperature sensor, clutter interference existing in temperature detection signals is effectively eliminated, and the detection signal precision is greatly improved.
3. In order to further avoid the influence of noise generated in the system on temperature detection, the noise reduction isolation circuit is adopted to process the output signal of the amplification filter circuit, the controller analyzes and calculates the waveform of the received temperature detection signal to obtain the real-time temperature of the surface of the material, and automatically adjusts the heat of the UV light source.
Drawings
Fig. 1 is a schematic diagram of an amplifying and filtering circuit according to the present invention.
FIG. 2 is a schematic diagram of a noise reduction isolation circuit according to the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The utility model provides an environment-friendly UV printing processing control system, includes UV light source, controller and temperature monitoring unit, the temperature monitoring unit includes infrared temperature sensor, infrared temperature sensor's detected signal sends into after amplifying filter circuit and the isolator circuit processing of making an uproar falls in proper order in the controller, the controller is used for adjusting the heating power of UV light source.
As shown in fig. 1, the amplifying and filtering circuit includes an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to one ends of resistors R1 and R2 and a capacitor C1 through a resistor R3, the other ends of the resistor R1 and a capacitor C1 are connected to a signal output terminal of the infrared temperature sensor, the other end of the resistor R2 is grounded, a non-inverting input terminal of the operational amplifier AR1 is connected to one ends of a resistor R1 and a capacitor C1 through a resistor R1, the other end of the resistor R1 is connected to a gate of a MOS transistor Q1, the other end of the capacitor C1 is grounded, an output terminal of the operational amplifier AR1 is connected to the inverting input terminal of the operational amplifier AR1 through a capacitor C1, and is connected to one end of the resistor R1 and an emitter of a transistor T1 through a resistor R1, the other end of the resistor R1 is connected to a drain of the MOS transistor Q1, a base of the transistor T1 and a cathode of the zener diode DZ1, an anode of the zener diode DZ, the resistor R8 is grounded, the collector of the triode T1 is connected with the drain of the MOS tube Q2 through the inductor L1 and the capacitor C4 which are connected in parallel, the source of the MOS tube Q2 is connected with the input end of the Susan noise reduction isolation circuit through the capacitor C5, and the resistor R10 is grounded.
As shown in fig. 2, the noise reduction isolation circuit includes an operational amplifier AR2, an inverting input terminal of the operational amplifier AR2 is connected to the resistor R12, one end of the voltage regulator tube DZ2 and an output terminal of the amplification filter circuit, a non-inverting input terminal of the operational amplifier AR2 is grounded through the resistor R11 and the capacitor C6 which are connected in parallel, an output terminal of the operational amplifier AR2 is connected to the other ends of the resistor R12 and the voltage regulator tube DZ2 and is connected to a non-inverting input terminal of the operational amplifier AR3 through the resistor R13, and the inverting input terminal and the output terminal of the operational amplifier AR3 are connected to the controller.
The specific working process and principle of the invention are as follows: according to the invention, the infrared temperature sensor is arranged above the UV light source, and the surface temperature of the material during UV treatment is acquired in real time in a non-contact manner, so that the device has the advantage of high response speed. In order to avoid the influence of external interference on the temperature detection result, the output signal of the infrared temperature sensor is processed by an amplifying and filtering circuit, wherein the resistors R1 and R2 and the capacitor C1 carry out high-pass filtering on the output signal of the infrared temperature sensor and then send the output signal into the operational amplifier AR1 for amplification, and the capacitor C2 plays a compensation role in the operational amplifier signal and ensures the amplification and stable output of the temperature detection signal. The output signal of the operational amplifier AR1 is sent into a composite tube composed of MOS tubes Q1 and Q2 to be further rapidly improved, and an inductor L1 and a capacitor C4 which are connected in parallel are connected between the MOS tubes Q1 and Q2 to form resonance filtering, so that clutter interference existing in the temperature detection signal is effectively eliminated, and the detection signal precision is greatly improved. Meanwhile, in order to reduce the fluctuation of the resonant filtering on the signal output, the triode T1 and the voltage stabilizing diode DZ1 are adopted to form a voltage stabilizer to stabilize the signal output, and the accurate and stable output of the temperature detection signal is ensured.
In order to further avoid the influence of noise generated inside the system on temperature detection, a noise reduction isolation circuit is adopted to process the output signal of the amplification filter circuit, wherein an operational amplifier AR2 is used as a low-noise differential circuit to process the output signal of the MOS tube Q2, high-frequency noise is effectively suppressed, and a capacitor C6 is used for bypassing thermal noise on R11 and can keep a loop stable. And finally, the output signal of the operational amplifier AR2 is isolated and output to the controller by the operational amplifier AR3 by using the voltage follower principle, and is electrically isolated from the preceding stage circuit, so that the signal receiving of the controller is more stable. When the temperature control device is used specifically, the controller is a PLC control module, a CPU of the PLC control module analyzes and calculates the waveform of the received temperature detection signal to obtain the real-time temperature of the surface of the material, and automatically adjusts the heat of the UV light source, so that the system is high in response speed, accurate and effective in temperature control, and good in use value.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (4)
1. The utility model provides an environment-friendly UV printing processing control system, includes UV light source, controller and temperature monitoring unit, its characterized in that: the temperature monitoring unit comprises an infrared temperature sensor, detection signals of the infrared temperature sensor are sent into the controller after being processed by the amplifying and filtering circuit and the noise reduction and isolation circuit in sequence, and the controller is used for adjusting the heating power of the UV light source.
2. The environmentally friendly UV printing process control system of claim 1, wherein: the amplifying and filtering circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1, a resistor R2 and a capacitor C1 through a resistor R3, the other end of the resistor R1 and the other end of the capacitor C1 are connected with the signal output end of the infrared temperature sensor, the other end of the resistor R1 is grounded, the non-inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and one end of a capacitor C1 through a resistor R1, the other end of the resistor R1 is connected with the grid of a MOS tube Q1, the other end of the capacitor C1 is grounded, the output end of the operational amplifier AR1 is connected with the inverting input end of the operational amplifier AR1 through a capacitor C1, the one end of the resistor R1 is connected with the emitter of a triode T1, the other end of the resistor R1 is connected with the drain of the MOS tube Q1, the base of the triode T1 and the cathode of the Zener diode DZ1, the anode of the Zener diode DZ1 is grounded, the collector of the triode T1 is connected to the drain of the MOS transistor Q2 through the inductor L1 and the capacitor C4 connected in parallel, and the source of the MOS transistor Q2 is connected to the input of the noise reduction isolation circuit through the capacitor C5 and is grounded through the resistor R10.
3. The environmentally friendly UV printing process control system of claim 2, wherein: the noise reduction isolation circuit comprises an operational amplifier AR2, wherein the inverting input end of the operational amplifier AR2 is connected with one end of a resistor R12, a voltage regulator tube DZ2 and the output end of the amplification filter circuit, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R11 and a capacitor C6 which are connected in parallel, the output end of the operational amplifier AR2 is connected with the other end of the resistor R12 and the other end of the voltage regulator tube DZ2 and is connected with the non-inverting input end of the operational amplifier AR3 through a resistor R13, and the inverting input end and the output end of the operational amplifier AR3 are connected with the.
4. The environmentally friendly UV printing process control system according to claims 1-3, wherein: the controller is a PLC control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110234065.2A CN113049108A (en) | 2021-03-03 | 2021-03-03 | Environment-friendly UV printing treatment control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110234065.2A CN113049108A (en) | 2021-03-03 | 2021-03-03 | Environment-friendly UV printing treatment control system |
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| CN113049108A true CN113049108A (en) | 2021-06-29 |
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| CN202110234065.2A Pending CN113049108A (en) | 2021-03-03 | 2021-03-03 | Environment-friendly UV printing treatment control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859995A (en) * | 2022-04-21 | 2022-08-05 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melt guniting granulation production |
| CN115437419A (en) * | 2022-08-17 | 2022-12-06 | 河南天子铝业有限公司 | Temperature control device for vacuum casting of aluminum profile |
| CN114859995B (en) * | 2022-04-21 | 2024-06-04 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melting, slurry spraying and granulating production |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114859995A (en) * | 2022-04-21 | 2022-08-05 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melt guniting granulation production |
| CN114859995B (en) * | 2022-04-21 | 2024-06-04 | 史丹利化肥宁陵有限公司 | Automatic temperature control system for urea melting, slurry spraying and granulating production |
| CN115437419A (en) * | 2022-08-17 | 2022-12-06 | 河南天子铝业有限公司 | Temperature control device for vacuum casting of aluminum profile |
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