CN115437419A - Temperature control device for vacuum casting of aluminum profile - Google Patents
Temperature control device for vacuum casting of aluminum profile Download PDFInfo
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- CN115437419A CN115437419A CN202210988566.4A CN202210988566A CN115437419A CN 115437419 A CN115437419 A CN 115437419A CN 202210988566 A CN202210988566 A CN 202210988566A CN 115437419 A CN115437419 A CN 115437419A
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- 238000005266 casting Methods 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 abstract description 19
- 238000009529 body temperature measurement Methods 0.000 abstract description 10
- 230000003321 amplification Effects 0.000 abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses a temperature control device for vacuum casting of aluminum profiles, which comprises a casting temperature sensor arranged in a vacuum closed casting chamber, wherein the signal output end of the casting temperature sensor is sequentially connected with a temperature controller and a PLC (programmable logic controller) through a transmission line; the infrared temperature measurement sensor with still be provided with signal conditioning module between the temperature controller, signal conditioning module includes steady amplitude and falls the conditioning circuit of making an uproar and signal amplification filtering processing circuit, sets up signal conditioning module and comes to handle infrared temperature detection signal, eliminates the influence that environmental noise produced infrared temperature measurement sensor, guarantees that temperature detection signal output is accurate, stable, and then has greatly promoted aluminium alloy vacuum casting control by temperature change precision, improves the pouring quality.
Description
Technical Field
The invention relates to the technical field of aluminum profile casting production equipment, in particular to a temperature control device for aluminum profile vacuum casting.
Background
The aluminum alloy door and window obtained by vacuum casting and vacuum cooling has the advantages of low impurity content, almost no casting cracks and silver lines, no influence from environmental airflow and temperature change, high strength compared with the normal temperature and normal pressure environment, and strong weather resistance and corrosion resistance. For example, in the invention patent of the invention with the application number of 201711484971.8 and the name of "door and window aluminum profile vacuum casting control system", the temperature and vacuum degree control of a vacuum closed casting chamber, a vacuum dust-free closed cooling chamber and an aluminum alloy profile spraying and curing drying chamber is realized by means of a PLC (programmable logic controller) and a vacuum pressure controller and a temperature controller connected with the PLC. However, in the actual use process, because the environmental temperature of the vacuum sealed casting chamber changes frequently and the temperature difference is large, the traditional platinum heat type temperature probe has higher time lag in the process of measuring the temperature in the vacuum sealed casting chamber, and is seriously influenced by temperature drift, so that the deviation between the measured temperature and the actual environmental temperature is larger, the temperature control precision of aluminum profile vacuum casting is low, and the casting effect is influenced.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, the present invention aims to provide a temperature control device for vacuum casting of aluminum profiles.
The technical scheme for solving the problem is as follows: the utility model provides an aluminium alloy vacuum casting temperature control device, is including setting up the pouring temperature sensor in the airtight pouring room in vacuum, and pouring temperature sensor's signal output part connects gradually temperature controller and PLC controller through the transmission line, pouring temperature sensor chooses infrared temperature sensor for use, infrared temperature sensor with still be provided with signal conditioning module between the temperature controller, signal conditioning module falls conditioning circuit and signal amplification filter processing circuit including falling the steady amplitude of making an uproar, the input of falling the conditioning circuit of making an uproar is connected the signal output part of infrared temperature sensor, the output of infrared temperature sensor is connected the input of signal amplification filter processing circuit, the output of signal amplification filter processing circuit is connected temperature controller.
Further, the amplitude-stabilizing noise-reducing conditioning circuit comprises a triode VT1, a collector of the triode VT1 is connected with a signal output end of the infrared temperature measuring sensor, and is connected with a base of the triode VT1 and a cathode of a voltage stabilizing diode DZ1 through a resistor R1, an anode of the voltage stabilizing diode DZ1 is grounded, an emitter of the triode VT1 is connected with a drain electrode of the MOS tube Q1 and is grounded through a resistor R2, a grid electrode of the MOS tube Q1 is connected with one end of an inductor L1 and one end of a capacitor C1, the other end of the inductor L1 is grounded, a source electrode of the MOS tube Q1 is connected with an inverting input end of the operational amplifier AR1 and one end of the capacitor C2 through a resistor R4, an output end of the operational amplifier AR1 is connected with the other ends of the capacitors C1 and C2 and is grounded through a resistor R3, and an in-phase input end of the operational amplifier AR1 is grounded through a resistor R5 and a capacitor C3 which are connected in parallel.
Furthermore, the amplifying and filtering processing circuit comprises an operational amplifier AR2, a triode VT2 and an RLC filter, wherein the non-inverting input end of the operational amplifier AR2 is connected with the output end of the amplitude and noise reduction conditioning circuit, the inverting input end of the operational amplifier AR2 is connected with the emitting electrode of the triode VT2, the output end of the operational amplifier AR2 is connected with the base electrode of the triode VT2, one end of a resistor R6 and the cathode of a voltage stabilizing diode DZ2, the other end of the resistor R6 and the anode of the voltage stabilizing diode DZ2 are grounded in parallel, and the collecting electrode of the triode VT2 is connected with the temperature controller through the RLC filter.
Further, the RLC filter includes resistors R7 and R8, a capacitor C4 and an inductor L2, one end of the resistor R7 and one end of the capacitor C4 are connected to the collector of the transistor VT2, the other end of the resistor R7 and the other end of the capacitor C4 are connected to one end of the inductor L2 and the temperature controller, and the other end of the inductor L2 is grounded through the resistor R8.
Through the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the pouring temperature sensor is selected as an infrared temperature measuring sensor to detect the environmental temperature in the vacuum closed pouring chamber, so that the time lag in the temperature detection process is effectively eliminated, the temperature measurement sensitivity of the device is higher, and the measurement is more direct and accurate;
2. set up signal conditioning module and come to handle infrared temperature detection signal, eliminate the influence that environmental noise produced infrared temperature sensor, guarantee that temperature detection signal output is accurate, stable, and then greatly promoted aluminium alloy vacuum casting control by temperature change precision, improve the pouring quality.
Drawings
Fig. 1 is a schematic diagram of an amplitude-stabilizing noise-reducing conditioning circuit according to the present invention.
Fig. 2 is a schematic diagram of a signal amplifying and filtering 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 aluminium alloy vacuum pouring temperature control device, is including setting up the pouring temperature sensor in the airtight pouring room in vacuum, and pouring temperature sensor's signal output part connects gradually temperature controller and PLC controller through the transmission line, and infrared temperature sensor is chooseed for use to pouring temperature sensor, utilizes the time lag nature that infrared temperature measurement principle can eliminate the temperature measurement in-process and appear, makes the device higher to temperature measurement sensitivity, and measures more directly, accurate.
The infrared temperature measurement sensor with still be provided with signal conditioning module between the temperature controller, signal conditioning module includes steady range and falls the conditioning circuit of making an uproar and signal amplification filtering processing circuit, the input of steady range falls the conditioning circuit of making an uproar and connects infrared temperature measurement sensor's signal output part, infrared temperature measurement sensor's output is connected signal amplification filtering processing circuit's input, signal amplification filtering processing circuit's output is connected the temperature controller.
As shown in fig. 1, the amplitude-stabilizing noise-reducing conditioning circuit includes a triode VT1, a collector of the triode VT1 is connected to a signal output terminal of the infrared temperature sensor, and is connected to a base of the triode VT1 and a cathode of a zener diode DZ1 through a resistor R1, an anode of the zener diode DZ1 is grounded, an emitter of the triode VT1 is connected to a drain of the MOS transistor Q1 and is grounded through a resistor R2, a gate of the MOS transistor Q1 is connected to one end of the inductor L1 and one end of the capacitor C1, the other end of the inductor L1 is grounded, a source of the MOS transistor Q1 is connected to an inverting input terminal of the operational amplifier AR1 and one end of the capacitor C2 through a resistor R4, an output terminal of the operational amplifier AR1 is connected to the other ends of the capacitors C1 and C2 and is grounded through a resistor R3, and an in-phase input terminal of the operational amplifier AR1 is grounded through a resistor R5 and a capacitor C3 connected in parallel.
The triode VT1 pre-amplifies a detection signal of the infrared temperature measurement sensor, and adopts a voltage stabilizing diode DZ1 as a regulating tube to perform amplitude stabilizing processing on a base signal of the triode VT1, so that the stability of a signal amplification output amplitude is ensured; then, the MOS tube Q1 amplifies and adjusts the detection signal, the good temperature characteristic of the MOS tube Q1 can be used for effectively improving the output waveform of the detection signal, meanwhile, the operational amplifier AR1 is used for sampling and feeding back the output signal of the MOS tube Q1, the operational amplifier AR1 is used for driving an LC noise reduction unit arranged on the grid of the MOS tube Q1 to work, the closed-loop feedback principle is used for carrying out noise reduction on the detection signal, the high-frequency noise mixed in the detection signal is greatly reduced, and meanwhile, the stability of the output of the detection signal is ensured.
The amplifying and filtering processing circuit further processes the output signal of the amplitude-stabilizing and noise-reducing conditioning circuit, as shown in fig. 2, the amplifying and filtering processing circuit specifically comprises an operational amplifier AR2, a triode VT2 and an RLC filter, the in-phase input end of the operational amplifier AR2 is connected to the output end of the amplitude-stabilizing and noise-reducing conditioning circuit, the inverting input end of the operational amplifier AR2 is connected to the emitter of the triode VT2, the output end of the operational amplifier AR2 is connected to the base of the triode VT2, one end of a resistor R6 and the cathode of a zener diode DZ2, the other end of the resistor R6 and the anode of the zener diode DZ2 are grounded in parallel, and the collector of the triode VT2 is connected to the temperature controller through the RLC filter.
The RLC filter comprises resistors R7 and R8, a capacitor C4 and an inductor L2, one ends of the resistor R7 and the capacitor C4 are connected with a collector of the triode VT2, the other ends of the resistor R7 and the capacitor C4 are connected with one end of the inductor L2 and the temperature controller, and the other end of the inductor L2 is grounded through the resistor R8.
In the process of processing the amplifying and filtering processing circuit, the operational amplifier AR2 and the triode VT2 form an emitter follower to perform secondary amplification processing on the detection signal, so that the intensity of the detection signal is rapidly improved, the detection signal reaches a standard range value recognizable by the temperature controller, and the voltage stabilizing diode DZ1 plays a stabilizing role in the work of the emitter follower. The RLC filter filters surge clutter signals in output signals of the emitter follower, ensures that detection signals are stably sent into the temperature controller, and sends the detection signals into the PLC controller to display temperature parameter changes in the vacuum closed pouring chamber in real time.
In conclusion, the pouring temperature sensor is selected as the infrared temperature measuring sensor to detect the ambient temperature in the vacuum closed pouring chamber, so that the time lag in the temperature detection process is effectively eliminated, the temperature measuring sensitivity of the device is higher, and the measurement is more direct and accurate; and set up signal conditioning module and come to handle infrared temperature detection signal, eliminate the influence that environmental noise produced infrared temperature sensor, guarantee that temperature detection signal output is accurate, stable, and then greatly promoted aluminium alloy vacuum casting control by temperature change precision, improve the pouring quality.
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 aluminium alloy vacuum pouring temperature control device, is including setting up the pouring temperature sensor in the airtight pouring room in vacuum, and pouring temperature sensor's signal output part connects gradually temperature controller and PLC controller, its characterized in that through the transmission line: the pouring temperature sensor is an infrared temperature sensor, a signal conditioning module is further arranged between the infrared temperature sensor and the temperature controller and comprises an amplitude stabilizing and noise reducing conditioning circuit and a signal amplifying and filtering processing circuit, the input end of the amplitude stabilizing and noise reducing conditioning circuit is connected with the signal output end of the infrared temperature sensor, the output end of the infrared temperature sensor is connected with the input end of the signal amplifying and filtering processing circuit, and the output end of the signal amplifying and filtering processing circuit is connected with the temperature controller.
2. The temperature control device for vacuum casting of aluminum profiles as claimed in claim 1, characterized in that: the amplitude-stabilizing noise-reducing conditioning circuit comprises a triode VT1, wherein a collector of the triode VT1 is connected with a signal output end of the infrared temperature measuring sensor, a base of the triode VT1 and a cathode of a voltage stabilizing diode DZ1 are connected through a resistor R1, an anode of the voltage stabilizing diode DZ1 is grounded, an emitter of the triode VT1 is connected with a drain electrode of an MOS tube Q1 and is grounded through a resistor R2, a grid electrode of the MOS tube Q1 is connected with one ends of an inductor L1 and a capacitor C1, the other end of the inductor L1 is grounded, a source electrode of the MOS tube Q1 is connected with an inverting input end of an operational amplifier AR1 and one end of a capacitor C2 through a resistor R4, an output end of the operational amplifier AR1 is connected with the other ends of the capacitors C1 and C2 and is grounded through a resistor R3, and an in-phase input end of the operational amplifier AR1 is grounded through a resistor R5 and a capacitor C3 which are connected in parallel.
3. The temperature control device for vacuum casting of aluminum profiles as claimed in claim 2, characterized in that: the amplifying and filtering processing circuit comprises an operational amplifier AR2, a triode VT2 and an RLC filter, wherein the in-phase input end of the operational amplifier AR2 is connected with the output end of the amplitude-stabilizing and noise-reducing conditioning circuit, the reverse-phase input end of the operational amplifier AR2 is connected with the emitting electrode of the triode VT2, the output end of the operational amplifier AR2 is connected with the base electrode of the triode VT2, one end of a resistor R6 and the cathode of a voltage stabilizing diode DZ2, the other end of the resistor R6 and the anode of the voltage stabilizing diode DZ2 are grounded in parallel, and the collecting electrode of the triode VT2 is connected with the temperature controller through the RLC filter.
4. The aluminum profile vacuum casting temperature control device according to claims 1-4, characterized in that: the RLC filter comprises resistors R7 and R8, a capacitor C4 and an inductor L2, one ends of the resistor R7 and the capacitor C4 are connected with a collector of the triode VT2, the other ends of the resistor R7 and the capacitor C4 are connected with one end of the inductor L2 and the temperature controller, and the other end of the inductor L2 is grounded through the resistor R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210988566.4A CN115437419A (en) | 2022-08-17 | 2022-08-17 | Temperature control device for vacuum casting of aluminum profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210988566.4A CN115437419A (en) | 2022-08-17 | 2022-08-17 | Temperature control device for vacuum casting of aluminum profile |
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| Publication Number | Publication Date |
|---|---|
| CN115437419A true CN115437419A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210988566.4A Pending CN115437419A (en) | 2022-08-17 | 2022-08-17 | Temperature control device for vacuum casting of aluminum profile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006020272U1 (en) * | 2006-05-18 | 2008-02-07 | Itema Gmbh | Device for detecting foreign substances in liquid metals |
| CN210573321U (en) * | 2019-11-12 | 2020-05-19 | 辽宁希思腾科信息技术有限公司 | Intelligent switch panel with temperature control function |
| CN211403222U (en) * | 2020-01-15 | 2020-09-01 | 禹州市亚龙机械制造有限公司 | Pouring production line heat treatment control system |
| CN113049108A (en) * | 2021-03-03 | 2021-06-29 | 河南新正方彩印有限公司 | Environment-friendly UV printing treatment control system |
| CN214881716U (en) * | 2021-03-24 | 2021-11-26 | 辉县市腾飞机械制造有限公司 | Casting heat treatment temperature control system |
-
2022
- 2022-08-17 CN CN202210988566.4A patent/CN115437419A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006020272U1 (en) * | 2006-05-18 | 2008-02-07 | Itema Gmbh | Device for detecting foreign substances in liquid metals |
| CN210573321U (en) * | 2019-11-12 | 2020-05-19 | 辽宁希思腾科信息技术有限公司 | Intelligent switch panel with temperature control function |
| CN211403222U (en) * | 2020-01-15 | 2020-09-01 | 禹州市亚龙机械制造有限公司 | Pouring production line heat treatment control system |
| CN113049108A (en) * | 2021-03-03 | 2021-06-29 | 河南新正方彩印有限公司 | Environment-friendly UV printing treatment control system |
| CN214881716U (en) * | 2021-03-24 | 2021-11-26 | 辉县市腾飞机械制造有限公司 | Casting heat treatment temperature control system |
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