CN114801465A - Printing quality control system for pop-top can - Google Patents
Printing quality control system for pop-top can Download PDFInfo
- Publication number
- CN114801465A CN114801465A CN202111187494.5A CN202111187494A CN114801465A CN 114801465 A CN114801465 A CN 114801465A CN 202111187494 A CN202111187494 A CN 202111187494A CN 114801465 A CN114801465 A CN 114801465A
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- Prior art keywords
- operational amplifier
- resistor
- inverting input
- capacitor
- input end
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- 238000007639 printing Methods 0.000 title claims abstract description 23
- 238000003908 quality control method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 230000006641 stabilisation Effects 0.000 claims abstract description 4
- 238000011105 stabilization Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 32
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 238000001035 drying Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
- B41F23/0409—Ultraviolet dryers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
- B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
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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
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a printing quality control system of a pop can, which comprises a UV printing machine and a temperature control unit, wherein the UV printing machine comprises a UV light source, the temperature control unit comprises an infrared temperature sensor arranged above the UV light source, and a detection signal of the infrared temperature sensor is processed by an isolation buffer circuit, a feedback enhancement noise reduction circuit and a waveform stabilization circuit in sequence and then is sent into a controller.
Description
Technical Field
The invention relates to the technical field of air purification treatment, in particular to a printing quality control system for pop cans.
Background
The existing pop can production system generally comprises cleaning and drying, priming coating and drying, printing and drying, internal spraying and drying, necking and flanging, optical inspection, photographing and the like. The traditional pop can printing is usually coated by solvent-based coating, which can cause the volatilization of a large amount of organic solvent, influence the performance of a coating film, damage the health of operators and cause environmental pollution. The UV printing is a printing process for drying and curing ink through ultraviolet light, the using effect is better compared with the traditional mode, and when the ink on the surface of the pop can is cured by the UV light source, the heat productivity of the UV light source is deviated from an actual set value due to the influences of aging of equipment in long-term use and influence on temperature control precision by external interference, so that the curing effect of the ink for printing the pop can is poor, the phenomena of black spots, unsmooth patterns and the like exist on the surface, and the yield of products is influenced.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, the present invention is directed to a printing quality control system for pop cans to overcome the drawbacks of the prior art.
The technical scheme for solving the problem is as follows: a printing quality control system for ring-pull cans comprises a UV printer and a temperature control unit, wherein the UV printer comprises a UV light source, the temperature control unit comprises an infrared temperature sensor arranged above the UV light source, a detection signal of the infrared temperature sensor is sent into a controller after being processed by an isolation buffer circuit, a feedback enhancement noise reduction circuit and a waveform stabilizing circuit in sequence, and the controller is used for controlling the working power of the UV light source; the feedback enhancement noise reduction circuit comprises an operational amplifier AR2 and an AR3, wherein the inverting input end of an operational amplifier AR2 is connected with one end of a resistor R3 and one end of a resistor R4, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R5 and a capacitor C2 which are connected in parallel, the output end of the operational amplifier AR2 is connected with the other end of a resistor R4 and is connected with the grid electrode of a MOS tube Q1 through a resistor R6, the drain electrode of the MOS tube Q1 is connected with one end of capacitors C3 and C4 and an inductor L1, the source electrode of the MOS tube Q1 is connected with the other end of the capacitor C3 and is grounded through a resistor R7, the other end of the inductor L1 is connected with the other end of the capacitor C4 and the inverting input end of the operational amplifier AR3 through a resistor R8, the non-inverting input end of the operational amplifier AR3 is grounded through a resistor R9, the output end of the operational amplifier AR3 is connected with the other end of the resistor R3 and is connected with the inverting input end of the operational amplifier 3 through a capacitor C5.
Further, the isolation buffer circuit comprises an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to a signal output terminal of the infrared temperature sensor, an inverting input terminal and an output terminal of the operational amplifier AR1 are connected to one end of the resistor R2 and the other end of the resistor R3 through a resistor R1 and a capacitor C1 which are connected in parallel, and the other end of the resistor R2 is grounded.
Further, the stabilizing circuit comprises an operational amplifier AR4, an inverting input terminal of the operational amplifier AR4 is connected to the drain of the MOS transistor Q1, a non-inverting input terminal of the operational amplifier AR4 is grounded through a resistor R11, an output terminal of the operational amplifier AR4 is connected to one ends of capacitors C6 and C7, the cathode of the zener diode DZ1 and the controller, the other end of the capacitor C6 is connected to an inverting input terminal of the operational amplifier AR4 through a resistor R10, and the other end of the capacitor C7 is connected to the anode of the zener diode DZ1 in parallel.
Through the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the infrared temperature sensor is used for detecting the surface drying temperature of the pop can, the isolation buffer circuit utilizes the voltage follower principle to avoid electrical interference generated by equipment work, and the RC buffer is arranged to avoid the fluctuation of a detection signal, so that the detection signal output is well stabilized;
2. the feedback enhanced noise reduction circuit improves the processing efficiency of detection signals, effectively inhibits the interference of a UV light source on the detection signals of the infrared temperature sensor, improves the detection precision of infrared temperature, and improves the frequency characteristic of the RLC wave trap by utilizing feedback adjustment to avoid generating system errors;
3. the waveform stabilizing circuit performs phase adjustment on the detection signal, greatly improves the output waveform of the detection signal and has a stabilizing effect on the amplitude of the detection signal;
4. the controller enables the ink curing temperature of the pop can to be in the optimal environment state all the time by automatically adjusting the working power of the UV light source, so that the temperature control precision of the UV light source is improved, the ink curing effect of the pop can printing is improved, and the yield of products is improved.
Drawings
FIG. 1 is a schematic diagram of the connection of an isolation buffer circuit and a feedback enhanced noise reduction circuit of the present invention.
Fig. 2 is a schematic diagram of a waveform stabilizing circuit according to the present invention.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities 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 and 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 a zip-top can printing quality control system, includes UV printing machine and temperature control unit, and the UV printing machine includes the UV light source, and the temperature control unit is including setting up the infrared temperature sensor in UV light source top, and infrared temperature sensor's detected signal is sent into the controller after keeping apart buffer circuit, feedback reinforcing noise reduction circuit and waveform stabilization circuit processing in proper order, and the controller is arranged in controlling the operating power of UV light source.
As shown in fig. 1, the feedback enhancement noise reduction circuit includes an operational amplifier AR2 and an AR3, an inverting input terminal of the operational amplifier AR2 is connected to one end of a resistor R3 and one end of a resistor R4, a non-inverting input terminal of the operational amplifier AR2 is connected to ground through a resistor R5 and a capacitor C2 which are connected in parallel, an output terminal of the operational amplifier AR2 is connected to the other end of a resistor R4 and is connected to a gate of a MOS transistor Q1 through a resistor R6, a drain of the MOS transistor Q1 is connected to one end of capacitors C1, C1 and an inverting input terminal of the operational amplifier AR1, a source of the MOS transistor Q1 is connected to the other end of the capacitor C1 and is connected to ground through a resistor R1, the other end of the inductor L1 is connected to the other end of the capacitor C1 and the inverting input terminal of the operational amplifier AR1 through a resistor R1, the non-inverting input terminal of the operational amplifier AR1 is connected to the inverting input terminal of the operational amplifier AR1 through a resistor R1.
The isolation buffer circuit comprises an operational amplifier AR1, the non-inverting input end of the operational amplifier AR1 is connected with the signal output end of the infrared temperature sensor, the inverting input end and the output end of the operational amplifier AR1 are connected with one end of a resistor R2 and the other end of a resistor R3 through a resistor R1 and a capacitor C1 which are connected in parallel, and the other end of the resistor R2 is grounded.
As shown in fig. 2, the waveform stabilizing circuit includes an operational amplifier AR4, an inverting input terminal of the operational amplifier AR4 is connected to the drain of the MOS transistor Q1, a non-inverting input terminal of the operational amplifier AR4 is grounded through a resistor R11, an output terminal of the operational amplifier AR4 is connected to one end of a capacitor C6 and C7, a cathode of the zener diode DZ1 and the controller, the other end of the capacitor C6 is connected to an inverting input terminal of the operational amplifier AR4 through a resistor R10, and the other end of the capacitor C7 is grounded in parallel to the anode of the zener diode DZ 1.
The specific working process and principle of the invention are as follows: the surface drying temperature of the pop can is detected by using the infrared temperature sensor, and in order to improve the drying temperature control precision of the UV light source, an isolation buffer circuit, a feedback enhanced noise reduction circuit and a waveform stabilizing circuit are sequentially arranged to process a detection signal of the infrared temperature sensor. Firstly, an operational amplifier AR1 in the isolation buffer circuit utilizes the principle of a voltage follower to carry out isolation amplification on a detection signal, so that the load capacity of the detection signal is improved, and the electrical interference generated by the work of equipment is avoided; then, the resistors R1 and R2 and the capacitor C1 form an RC buffer to buffer and stabilize the output signal of the operational amplifier AR1, thereby effectively avoiding the fluctuation of the detection signal and stabilizing the output of the detection signal.
When the feedback enhancement noise reduction circuit works specifically, firstly, the output signal of the isolation buffer circuit is amplified in a reversed phase mode by using the operational amplifier AR2, the thermal noise on a resistor R5 loop is eliminated by the capacitor C2 at the in-phase input end of the operational amplifier AR2, the operational amplification precision is effectively improved, and the output signal of the operational amplifier AR2 is amplified in a following mode by using the MOS tube Q1, so that the processing efficiency of detection signals is improved, and the signals are well improved. In order to inhibit the interference of the UV light source on the detection signal of the infrared temperature sensor, an RLC trap formed by a resistor R8, an inductor L1 and a capacitor C4 is added in the amplification process of the MOS transistor Q1 to filter harmful noise waves in the detection signal, so that the interference of the miscellaneous frequency caused by the UV light source is effectively inhibited, and the infrared temperature detection precision is improved. Meanwhile, the operational amplifier AR3 is adopted to carry out depth feedback on the trapped signal, so that the frequency characteristic of the RLC trap is effectively improved, a good stabilizing effect is also played on the system by utilizing feedback adjustment, and errors are avoided.
And finally, the waveform stabilizing circuit adopts an operational amplifier AR4 to perform waveform adjustment on the detection signal, utilizes a resistor R10 and a capacitor C6 to perform phase adjustment on the amplified signal of the operational amplifier AR4, greatly improves the output waveform of the detection signal, stabilizes the amplitude of the detection signal through a capacitor C7 and a voltage stabilizing diode DZ1 and then sends the stabilized detection signal into a controller, and the controller analyzes and processes the waveform of the detection signal, calculates the real-time drying temperature on the surface of the pop can, and automatically adjusts the working power of a UV light source to enable the ink curing temperature of the pop can to be in the optimal environment state all the time.
In conclusion, the surface drying temperature of the pop can is detected through the infrared temperature sensor, and the isolation buffer circuit, the feedback enhancement noise reduction circuit and the waveform stabilization circuit are designed to process the detection signal of the infrared temperature sensor, so that the interference of equipment and other external factors on the infrared detection signal is effectively avoided, the temperature control precision of a UV light source is greatly improved, the curing effect of printing ink of the pop can is improved, and the yield of products is improved.
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 arts, the extension, operation method, and data replacement shall fall within the scope of the present invention based on the technical idea of the present invention.
Claims (3)
1. The utility model provides a zip-top can printing quality control system, includes UV printing machine and temperature control unit, its characterized in that: the UV printing machine comprises a UV light source, the temperature control unit comprises an infrared temperature sensor arranged above the UV light source, a detection signal of the infrared temperature sensor is processed by an isolation buffer circuit, a feedback enhancement noise reduction circuit and a waveform stabilization circuit in sequence and then is sent into a controller, and the controller is used for controlling the working power of the UV light source; the feedback enhancement noise reduction circuit comprises an operational amplifier AR2 and an AR3, wherein the inverting input end of an operational amplifier AR2 is connected with one end of a resistor R3 and one end of a resistor R4, the non-inverting input end of the operational amplifier AR2 is grounded through a resistor R5 and a capacitor C2 which are connected in parallel, the output end of the operational amplifier AR2 is connected with the other end of a resistor R4 and is connected with the grid electrode of a MOS tube Q1 through a resistor R6, the drain electrode of the MOS tube Q1 is connected with one end of capacitors C3 and C4 and an inductor L1, the source electrode of the MOS tube Q1 is connected with the other end of the capacitor C3 and is grounded through a resistor R7, the other end of the inductor L1 is connected with the other end of the capacitor C4 and the inverting input end of the operational amplifier AR3 through a resistor R8, the non-inverting input end of the operational amplifier AR3 is grounded through a resistor R9, the output end of the operational amplifier AR3 is connected with the other end of the resistor R3 and is connected with the inverting input end of the operational amplifier 3 through a capacitor C5.
2. A can printing quality control system according to claim 1, wherein: the isolation buffer circuit comprises an operational amplifier AR1, the non-inverting input end of the operational amplifier AR1 is connected with the signal output end of the infrared temperature sensor, the inverting input end and the output end of the operational amplifier AR1 are connected with one end of a resistor R2 and the other end of the resistor R3 through a resistor R1 and a capacitor C1 which are connected in parallel, and the other end of the resistor R2 is grounded.
3. A can printing quality control system according to claim 2, wherein: the stabilizing circuit comprises an operational amplifier AR4, the inverting input end of the operational amplifier AR4 is connected with the drain electrode of a MOS transistor Q1, the non-inverting input end of the operational amplifier AR4 is grounded through a resistor R11, the output end of the operational amplifier AR4 is connected with one end of a capacitor C6 and a capacitor C7, the cathode of a voltage stabilizing diode DZ1 and the controller, the other end of the capacitor C6 is connected with the inverting input end of an operational amplifier AR4 through a resistor R10, and the other end of the capacitor C7 is connected with the anode of a voltage stabilizing diode DZ1 in parallel and grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187494.5A CN114801465A (en) | 2022-01-08 | 2022-01-08 | Printing quality control system for pop-top can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187494.5A CN114801465A (en) | 2022-01-08 | 2022-01-08 | Printing quality control system for pop-top can |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114801465A true CN114801465A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111187494.5A Pending CN114801465A (en) | 2022-01-08 | 2022-01-08 | Printing quality control system for pop-top can |
Country Status (1)
| Country | Link |
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| CN (1) | CN114801465A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190210357A1 (en) * | 2016-09-08 | 2019-07-11 | Hewlett-Packard Development Company, L.P. | Printer dryer monitor |
| CN210268082U (en) * | 2019-04-09 | 2020-04-07 | 佛山宝钢制罐有限公司 | Tank body drying device for automatic production of pop-top cans |
| CN210469299U (en) * | 2019-12-31 | 2020-05-05 | 李朋 | Electronic communication system |
| CN211793480U (en) * | 2020-03-17 | 2020-10-30 | 郑州科技学院 | Signal regulating circuit for crop irrigation control system |
| CN113433413A (en) * | 2021-08-10 | 2021-09-24 | 许昌许继电测设备有限公司 | Simulation circuit breaker testing device |
| CN214582392U (en) * | 2021-04-10 | 2021-11-02 | 河南永优种业科技有限公司 | Temperature control device of drying and screening machine |
| CN214793542U (en) * | 2021-05-13 | 2021-11-19 | 开封星阳科技有限公司 | Calorimeter detection and inspection device |
| CN215321413U (en) * | 2021-03-22 | 2021-12-28 | 河南大家印包装科技有限公司 | Printing packaging box printing ink drying device |
-
2022
- 2022-01-08 CN CN202111187494.5A patent/CN114801465A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| US20190210357A1 (en) * | 2016-09-08 | 2019-07-11 | Hewlett-Packard Development Company, L.P. | Printer dryer monitor |
| CN210268082U (en) * | 2019-04-09 | 2020-04-07 | 佛山宝钢制罐有限公司 | Tank body drying device for automatic production of pop-top cans |
| CN210469299U (en) * | 2019-12-31 | 2020-05-05 | 李朋 | Electronic communication system |
| CN211793480U (en) * | 2020-03-17 | 2020-10-30 | 郑州科技学院 | Signal regulating circuit for crop irrigation control system |
| CN215321413U (en) * | 2021-03-22 | 2021-12-28 | 河南大家印包装科技有限公司 | Printing packaging box printing ink drying device |
| CN214582392U (en) * | 2021-04-10 | 2021-11-02 | 河南永优种业科技有限公司 | Temperature control device of drying and screening machine |
| CN214793542U (en) * | 2021-05-13 | 2021-11-19 | 开封星阳科技有限公司 | Calorimeter detection and inspection device |
| CN113433413A (en) * | 2021-08-10 | 2021-09-24 | 许昌许继电测设备有限公司 | Simulation circuit breaker testing device |
Non-Patent Citations (1)
| Title |
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| 张贵山;张明鸣;郭魏琳;李晋尧;李海超;: "基于STM32F103C8T6的UV-LED印刷固化设备控制系统设计", 北京印刷学院学报, no. 03 * |
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