CN217839175U - Control system for electrophoretic spraying of aluminum profile wood grain - Google Patents
Control system for electrophoretic spraying of aluminum profile wood grain Download PDFInfo
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- CN217839175U CN217839175U CN202220824445.1U CN202220824445U CN217839175U CN 217839175 U CN217839175 U CN 217839175U CN 202220824445 U CN202220824445 U CN 202220824445U CN 217839175 U CN217839175 U CN 217839175U
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Abstract
The utility model discloses a control system for aluminium alloy wood grain electrophoresis spraying, including furnace temperature control unit, voltage control unit and chain speed control unit, furnace temperature control unit includes the infrared temperature sensor who is used for detecting curing oven temperature, and infrared temperature sensor passes through the signal transmission line connection and sets up the signal processing module outside the curing oven; the signal processing module is arranged to condition the detection signal of the infrared temperature measurement sensor, so that the output linearity of the detection signal is better, the interference of external high-frequency noise on temperature detection can be effectively inhibited, the detection signal is ensured to be accurately and stably output to the controller, and the temperature control precision is improved; the controller adjusts the power of the heating equipment in the curing furnace according to the curing process standard, thereby ensuring that each curing stage is at the optimal baking temperature and greatly improving the yield of electrophoretic painting of the wood grains of the aluminum profile.
Description
Technical Field
The utility model relates to an electrophoresis spraying equipment technical field especially relates to a control system for electrophoresis spraying of aluminium alloy wood grain.
Background
The aluminum profile wood grain spraying has the advantages that the coating surface has beautiful wood grain lines which are popular with customers, after the aluminum profile wood grain spraying, the main component of the wood grain coating is polyester, the coating is non-conductive, if the coating surface cannot be coated by oxidation anodic electrophoresis according to the conventional process, so the invention patent with the application number of 201510014734.X and the name of 'wood grain electrophoresis spraying process for aluminum profiles' provides a new solution, namely, after the aluminum profile wood grain spraying, the wood grain material (the finished product after the aluminum profile spraying) is sprayed by the electrostatic spraying process again, the surface of the wood grain material is sprayed by the electrophoretic paint, and the surface of the wood grain coating is covered by a layer of transparent electrophoresis paint film after multiple times of solidification to protect the wood grain coating. The electrophoresis spraying process comprises a furnace temperature control unit, a voltage control unit and a chain speed control unit, wherein the furnace temperature control unit has higher furnace temperature precision requirement on the curing process, and the existing curing furnace adopts a thermal resistance probe to detect the furnace temperature, so that the defects of low sensitivity and large error exist, the actual baking temperature of the aluminum profile is deviated from the standard set temperature, and the actual yield is low.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the defects of the prior art, an object of the present invention is to provide a control system for electrophoretic painting of wood grain of aluminum profile.
The technical scheme for solving the problem is as follows: a control system for aluminium alloy grain electrophoresis spraying, including furnace temperature control unit, voltage control unit and chain speed control unit, furnace temperature control unit is including the infrared temperature sensor who is used for detecting curing oven temperature, infrared temperature sensor passes through the signal transmission line and connects the signal processing module who sets up outside the curing oven, signal processing module is including the benchmark circuit, the compensation circuit that amplifies, filtering stabilizing circuit and the controller that connect gradually, the input of benchmark circuit is connected infrared temperature sensor, the controller is used for controlling the firing equipment that sets up in the curing oven.
Preferably, the reference circuit comprises a resistor R1, one end of the resistor R1 is connected to one end of each of the capacitors C1 and C2 and the signal output end of the infrared temperature measurement sensor, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is connected to the +3.3V power supply and one end of the resistor R2, and the other ends of the capacitor C2 and the resistor R2 are grounded through a resistor R3.
Preferably, the amplification compensation circuit comprises an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to the other end of the resistor R2, an inverting input terminal of the operational amplifier AR1 is connected to an output terminal of the operational amplifier AR1 through a resistor R4 and a capacitor C4 which are connected in parallel, and is connected to one end of a capacitor C3 through a resistor R5, and the other end of the capacitor C3 is grounded.
Preferably, the filter stabilizing circuit includes an inductor L1, one end of the inductor L1 is connected to one end of the resistor R6, one end of the capacitor C5 and an output end of the operational amplifier AR1, the other end of the inductor L1 is connected to one end of the capacitor C6 and the controller, the other end of the resistor R6 is connected to a base of the transistor VT1 and a cathode of the zener diode DZ1, an anode of the zener diode DZ1 is grounded, and a collector of the transistor VT1 is connected to the other ends of the capacitors C5 and C6.
Preferably, the controller is a PLC control module.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model utilizes the infrared temperature measuring sensor to detect the surface baking temperature of the aluminum profile in the curing furnace, and compared with a thermal resistance probe, the detection response speed is faster and the accuracy rate is higher;
2. the signal processing module is arranged to condition the detection signal of the infrared temperature measurement sensor, so that the output linearity of the detection signal is better, the interference of external high-frequency noise on temperature detection can be effectively inhibited, the detection signal is ensured to be accurately and stably output to the controller, and the temperature control precision is improved;
3. the controller adjusts the power of the heating equipment in the curing furnace according to the curing process standard, so that the optimal baking temperature of each curing stage is ensured, and the yield of the electrophoretic spraying of the wood grains of the aluminum profile is greatly improved.
Drawings
Fig. 1 is a schematic circuit diagram of the furnace temperature control unit of 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 fig. 1. 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 control system for the aluminum profile wood grain electrophoresis spraying comprises a furnace temperature control unit, a voltage control unit and a chain speed control unit, wherein the furnace temperature control unit comprises an infrared temperature measurement sensor for detecting the temperature of a curing furnace, and the infrared temperature measurement sensor is connected with a signal processing module arranged outside the curing furnace through a signal transmission line.
As shown in figure 1, the signal processing module comprises a reference circuit, an amplification compensation circuit, a filter stabilization circuit and a controller which are connected in sequence, wherein the input end of the reference circuit is connected with the infrared temperature measurement sensor, and the controller is used for controlling heating equipment arranged in the curing oven. The reference circuit comprises a resistor R1, one end of the resistor R1 is connected with one end of each of capacitors C1 and C2, the signal output end of the infrared temperature measurement sensor is connected with the signal output end of the capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is connected with a +3.3V power supply and one end of the resistor R2, and the other ends of the capacitor C2 and the resistor R2 are grounded through a resistor R3.
The amplifying compensation circuit comprises an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected with the other end of a resistor R2, the inverting input end of the operational amplifier AR1 is connected with the output end of the operational amplifier AR1 through a resistor R4 and a capacitor C4 which are connected in parallel, one end of a capacitor C3 is connected through a resistor R5, and the other end of the capacitor C3 is grounded.
The filter stabilizing circuit comprises an inductor L1, one end of the inductor L1 is connected with one end of a resistor R6, one end of a capacitor C5 and the output end of the operational amplifier AR1, the other end of the inductor L1 is connected with one end of the capacitor C6 and the controller, the other end of the resistor R6 is connected with the base electrode of the triode VT1 and the cathode of the voltage stabilizing diode DZ1, the anode of the voltage stabilizing diode DZ1 is grounded, and the collector electrode of the triode VT1 is connected with the other ends of the capacitors C5 and C6.
The utility model utilizes the infrared temperature measuring sensor to detect the surface baking temperature of the aluminum profile in the curing furnace in the specific working process, and the sensor probe realizes the direct detection of the surface temperature of the product by receiving the thermal radiation wave of the aluminum profile, and compared with a thermal resistance probe, the detection response speed is faster and the accuracy rate is higher; firstly, a reference circuit applies +3.3V reference voltage to an output signal of the infrared temperature measurement sensor to improve the system identification degree of the detection signal, a capacitor C1 plays a role in stabilizing the reference voltage, and then the output signal is coupled by a capacitor C2 and then is sent to an amplification compensation circuit for further processing; utilize fortune to put ware AR1 and carry out operational amplification to the detected signal, promote detected signal intensity fast, add resistance-capacitance feedback compensation at fortune negative feedback end that puts ware AR1 simultaneously, utilize the phase compensation principle effectively to improve detected signal output waveform, make detected signal output linearity better.
Because the infrared detection signal is easily interfered by external high-frequency noise, the output signal of the operational amplifier AR1 is denoised by adopting a filter stabilizing circuit, wherein the capacitors C5 and C6 and the inductor L1 form a pi-type LC filter to accurately filter the detection signal, so that the interference of the external high-frequency noise on temperature detection is effectively inhibited; meanwhile, in order to ensure the stability of the filtering process, the triode VT1 is adopted to stably adjust the filter, and the stability of a base electrode conduction signal of the triode VT1 is ensured by utilizing the amplitude stabilizing effect of the voltage stabilizing diode DZ1, so that the fluctuation generated in the filtering process is restrained, and the accurate and stable output of a detection signal to the controller is ensured. When specifically setting up, PLC control module is chooseed for use to the controller, and PLC control module calculates the real-time temperature of aluminium alloy baking process through carrying out waveform analysis to detected signal after to carry out power control to the firing equipment in the curing oven according to solidification process standard, thereby guarantee that every solidification stage all is in the best baking temperature, greatly promoted the yields of aluminium alloy grain electrophoresis spraying.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (3)
1. A control system for aluminium alloy grain electrophoresis spraying, including furnace temperature the control unit, voltage control unit and chain speed the control unit, its characterized in that: the furnace temperature control unit comprises an infrared temperature sensor for detecting the temperature of the curing furnace, the infrared temperature sensor is connected with a signal processing module arranged outside the curing furnace through a signal transmission line, the signal processing module comprises a reference circuit, an amplification compensation circuit, a filter stabilizing circuit and a controller which are sequentially connected, the input end of the reference circuit is connected with the infrared temperature sensor, and the controller is used for controlling heating equipment arranged in the curing furnace;
the reference circuit comprises a resistor R1, one end of the resistor R1 is connected with one ends of capacitors C1 and C2 and a signal output end of the infrared temperature measurement sensor, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is connected with a +3.3V power supply and one end of a resistor R2, and the other ends of the capacitor C2 and the resistor R2 are grounded through a resistor R3; the amplifying compensation circuit comprises an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected with the other end of the resistor R2, the inverting input end of the operational amplifier AR1 is connected with the output end of the operational amplifier AR1 through a resistor R4 and a capacitor C4 which are connected in parallel, the inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C3 through a resistor R5, and the other end of the capacitor C3 is grounded.
2. The control system for electrophoretic spraying of aluminum profile wood grains as claimed in claim 1, wherein: the filter stabilizing circuit comprises an inductor L1, one end of the inductor L1 is connected with one end of a resistor R6, one end of a capacitor C5 and the output end of the operational amplifier AR1, the other end of the inductor L1 is connected with one end of the capacitor C6 and the controller, the other end of the resistor R6 is connected with the base electrode of the triode VT1 and the cathode of the voltage stabilizing diode DZ1, the anode of the voltage stabilizing diode DZ1 is grounded, and the collector electrode of the triode VT1 is connected with the other ends of the capacitors C5 and C6.
3. The control system for electrophoretic spraying of aluminum profile wood grains as claimed in claim 2, wherein: the controller adopts a PLC control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220824445.1U CN217839175U (en) | 2022-04-11 | 2022-04-11 | Control system for electrophoretic spraying of aluminum profile wood grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220824445.1U CN217839175U (en) | 2022-04-11 | 2022-04-11 | Control system for electrophoretic spraying of aluminum profile wood grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217839175U true CN217839175U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220824445.1U Active CN217839175U (en) | 2022-04-11 | 2022-04-11 | Control system for electrophoretic spraying of aluminum profile wood grain |
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| CN (1) | CN217839175U (en) |
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- 2022-04-11 CN CN202220824445.1U patent/CN217839175U/en active Active
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