CN2410665Y - Heating temp. regulator for cutting machine - Google Patents
Heating temp. regulator for cutting machine Download PDFInfo
- Publication number
- CN2410665Y CN2410665Y CN 99250863 CN99250863U CN2410665Y CN 2410665 Y CN2410665 Y CN 2410665Y CN 99250863 CN99250863 CN 99250863 CN 99250863 U CN99250863 U CN 99250863U CN 2410665 Y CN2410665 Y CN 2410665Y
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- CN
- China
- Prior art keywords
- pin
- circuit
- temperature adjustment
- resistance
- wiring board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
The utility model relates to a heating temperature regulator for a cutting machine, which relates to the design and the manufacturing technique of a device for regulating the temperature. The utility model is composed of a housing, a controlling switch, an indicating lamp, a circuit board for regulating the temperature and a heating thread. The circuit board for regulating the temperature is composed of a modulation signal circuit, an optical coupling, and a zero crossing triggering bidirectional thyristor circuit. The modulation signal circuit is the circuit which generates definite frequency, and the width of square waves in the modulation signal circuit can be regulated. According to the optical coupling, the modulation signal circuit carries out complete conduction or closed modulation to the zero triggering bidirectional thyristor to regulate the number of sine waves and control different average voltage on the heating thread, so as to control the different temperature of the heating thread; the utility model has no external electromagnetic interference; the service life of the thyristor is long.
Description
The utility model relates to the design and fabrication technology of heating cutting device temperature adjustment device.
Now know two one-way SCRs of domestic and international employing.Transformer coupled by the unijunction transistor gating pulse under the voltage of the positive and negative half-wave of sine wave respectively to two one-way SCRs control utmost points, make two controllable silicons take turns conducting respectively at positive and negative half-wave.Conduction angle is controlled by adjustable potentiometer, is the temperature of the heater strip of control heater to reach control voltage.The voltage required because of heater strip is lower, about general 20V, thus adopt bidirectional triode thyristor when voltage is low, difficult its conducting of control.Therefore, the circuit of control thyristor operating angle does not adopt bidirectional triode thyristor under low voltage.Thereby all there is external electromagnetic interference (EMI) in the ghyristor circuit that adopts the control conduction angle to change the control change in voltage.Waveform in the prior art load is shown in figure one: this waveform can resolve into a lot of higher hamonic waves as can be seen from Figure, externally produces electromagnetic radiation.
The purpose of this utility model provides a kind of heating cutting device thermosistor of avoiding external electromagnetic interference (EMI) and prolonging the high-power control device life-span.
The purpose of this utility model is to realize like this, it is made of shell, gauge tap, pilot lamp, temperature adjustment wiring board and heater strip, the temperature adjustment wiring board is housed in shell, the temperature adjustment wiring board is connected with heater strip, the gauge tap that pilot lamp is arranged on the housing face-plate and be connected with temperature adjustment wiring board circuit, gauge tap has power switch, hand switch and temperature adjustment knob.The temperature adjustment wiring board is made of modulating signal circuit, optocoupler and zero cross fired bidirectional triode thyristor circuit, modulating signal circuit is to produce certain frequency, be that the constant but square width of period T can regulate be the circuit of wide variety, the modulation of by modulating signal circuit the zero cross fired bidirectional triode thyristor being carried out full conducting or ending by optocoupler.In one-period, regulate full conducting and the quantity of the sine wave that ends, reach control and be added in average voltage difference on the heater strip, thus the temperature difference of control heater strip.
Modulating signal circuit is: bridge piece Z
1Ac input end be connected to 20V alternating voltage A, B the end (the 20V alternating voltage is produced by transformer), the positive pole of output terminal connects a resistance R
3, the other end is power supply negative terminal (earth terminal), R
3Another termination stabilivolt of resistance D
3And capacitor C
2Positive pole, Z
1, R
3, D
3, C
2Form rectification, voltage stabilizing, filtering circuit, give U
1Integrated circuit provides direct supply.Resistance R
1, R
2, adjustment potentiometer W
1Link to each other R
1Another termination power, R
2Another terminating diode D
2Negative pole, D
2The C that positive pole connects
1Positive pole meets U simultaneously
12,6 pin, W
1Another terminating diode D
1Positive pole and U
17 pin, D
1Negative pole meets U
16 pin.U
18,4 pin connect power supply, 1 pin ground connection, 5 pin connect capacitor C
3, C
3Other end ground connection.3 pin are U
1The moving K switch of output terminal catcher
1, K
1Other end connecting resistance R
5, luminotron D
4Positive pole and resistance R
6And connection R
5The other end, another termination U in parallel
21 pin.
Optocoupler U
21 pin sending and receiving light pipe D
4Negative pole and resistance R
6Parallel connected end, U
22 pin ground connection, 6 pin connecting resistance R
4, 4 pin meet bidirectional triode thyristor Q
1G end.
The bidirectional triode thyristor circuit of zero cross fired is bidirectional triode thyristor Q
1 G termination U
24 pin, Q
1T
2Terminating resistor R
4The other end and heater strip R, another termination A of R end, Q
1T
1Termination B end.
The principle of work of entire circuit is: by Z
1Bridge piece R
3, D
3, C
2The rectification filtering voltage stabilizing circuit of forming is given U
1The NE555 chip provides dc supply.U
1NE555 connects peripheral resistance, electric capacity and diode and forms the width of square wave with W
1The variation of potentiometer and changing, but the square-wave signal that the cycle is certain, by optocoupler the bidirectional triode thyristor of zero cross fired is modulated (control), make the number of the sine wave of its full conducting in some cycles and half-wave different, thereby make it be added in average voltage difference on the heater strip, reach the purpose of control temperature.
The utility model has the advantages that, external electromagnetic-radiation-free, thus externally there is not electromagnetic interference (EMI).Learn that by figure one prior art is added in the stack that waveform in the load can resolve into first-harmonic and a lot of higher hamonic wave, higher hamonic wave to around produce electromagnetic radiation, produce and disturb.Next power device controllable silicon life-span is long, because adopt zero crossing to trigger control, impacts little to controllable silicon.
Below in conjunction with drawings and Examples the utility model is elaborated
Fig. 1 is a prior art load oscillogram.
Fig. 2 is the utility model schematic block circuit diagram.
Fig. 3 is 2 waveforms of the utility model C, D and 2 oscillograms of load E, A.
Fig. 4 is the utility model structural representation.
Fig. 5 is the utility model circuit diagram.
This heating cutting device thermosistor is made of shell, gauge tap, pilot lamp, temperature adjustment wiring board and heater strip, and temperature adjustment wiring board 6 is housed in shell 7, and the temperature adjustment wiring board is connected with heater strip 3, and luminotron D is arranged on the housing face-plate
4Cause the pilot lamp 1 of panel and the gauge tap that is connected with temperature adjustment wiring board circuit, gauge tap has power switch 2, hand switch 4 and temperature adjustment knob 5, temperature adjustment wiring board circuit A, B termination power switch 2, the moving switch 4 of K catcher, potentiometer W
1Jointing temp adjusting knob 5 is described in the circuit such as scheme of temperature adjustment wiring board.
Claims (5)
1, heating cutting device thermosistor, by shell, gauge tap, pilot lamp, temperature adjustment wiring board and heater strip constitute, it is characterized in that in shell [7], being equipped with temperature adjustment wiring board [6], the temperature adjustment wiring board is connected with heater strip [3], the gauge tap that pilot lamp [1] is arranged on the housing face-plate and be connected with temperature adjustment wiring board circuit, the temperature adjustment wiring board is by modulating signal circuit, optocoupler and zero cross fired bidirectional triode thyristor circuit constitute, modulating signal circuit is to produce certain frequency, but the circuit that square width can be regulated, the modulation of by modulating signal circuit the zero cross fired bidirectional triode thyristor being carried out full conducting or ending by optocoupler is regulated full conducting in the one-period and the quantity of the sine wave that ends.
2, heating cutting device thermosistor according to claim 1 is characterized in that modulating signal circuit is bridge piece Z
1Ac input end be connected to alternating current pressure side A, B, the positive pole of output terminal connects a resistance R
3, the other end is a power supply negative terminal, R
3Another termination stabilivolt of resistance D
3And capacitor C
2Positive pole, Z
1, R
3, D
3, C
2Form rectification, voltage stabilizing, filtering circuit, give U
1Integrated circuit provides direct supply, resistance R
1, R
2, adjustment potentiometer W
1Link to each other R
1Another termination power, R
2Another terminating diode D
2Negative pole, D
2The C that positive pole connects
2Positive pole meets U simultaneously
12,6 pin, W
1Another terminating diode D
1Positive pole and U
17 pin, D
1Negative pole meets U
16 pin, U
18,4 pin connect power supply, 1 pin ground connection, 5 pin connect capacitor C
3, C
3Other end ground connection, 3 pin are U
1The moving K switch of output terminal catcher
1, K
1Other end connecting resistance R
5, luminotron D
4Positive pole and resistance R
6And connection R
5The other end, another termination U in parallel
21 pin.
3, heating cutting device thermosistor according to claim 1 is characterized in that optocoupler U
21 pin sending and receiving light pipe D
4Negative pole and resistance R
6Parallel connected end, U
22 pin ground connection, 6 pin connecting resistance R
4, 4 pin meet bidirectional triode thyristor Q
1G end.
4, heating cutting device thermosistor according to claim 1 is characterized in that zero cross fired bidirectional triode thyristor circuit is bidirectional triode thyristor Q
1G termination U
24 pin, Q
1T
2Terminating resistor R
4The other end and heater strip R, another termination A of R end, Q
1T
1Termination B end.
5, heating cutting device thermosistor according to claim 1 is characterized in that gauge tap has power switch, hand switch and temperature adjustment knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250863 CN2410665Y (en) | 1999-12-30 | 1999-12-30 | Heating temp. regulator for cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250863 CN2410665Y (en) | 1999-12-30 | 1999-12-30 | Heating temp. regulator for cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410665Y true CN2410665Y (en) | 2000-12-13 |
Family
ID=34035520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250863 Expired - Lifetime CN2410665Y (en) | 1999-12-30 | 1999-12-30 | Heating temp. regulator for cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410665Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393784A (en) * | 2011-09-14 | 2012-03-28 | 江苏东方四通科技股份有限公司 | Method for improving control precision of fixed-cycle power regulator |
| WO2018208794A1 (en) | 2017-05-09 | 2018-11-15 | Phillips & Temro Industries Inc. | Heater control system |
| CN115494894A (en) * | 2022-07-20 | 2022-12-20 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
-
1999
- 1999-12-30 CN CN 99250863 patent/CN2410665Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393784A (en) * | 2011-09-14 | 2012-03-28 | 江苏东方四通科技股份有限公司 | Method for improving control precision of fixed-cycle power regulator |
| WO2018208794A1 (en) | 2017-05-09 | 2018-11-15 | Phillips & Temro Industries Inc. | Heater control system |
| CN110603897A (en) * | 2017-05-09 | 2019-12-20 | 菲利普斯坦洛工业有限公司 | Heater control system |
| EP3593591A4 (en) * | 2017-05-09 | 2020-01-15 | Phillips and Temro Industries Inc. | Heater control system |
| US11770876B2 (en) | 2017-05-09 | 2023-09-26 | Phillips & Temro Industries Inc. | Heater control system |
| CN115494894A (en) * | 2022-07-20 | 2022-12-20 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
| CN115494894B (en) * | 2022-07-20 | 2024-01-16 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |