CN212115180U - Intelligent sewing machine power supply control system - Google Patents
Intelligent sewing machine power supply control system Download PDFInfo
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- CN212115180U CN212115180U CN202021104815.1U CN202021104815U CN212115180U CN 212115180 U CN212115180 U CN 212115180U CN 202021104815 U CN202021104815 U CN 202021104815U CN 212115180 U CN212115180 U CN 212115180U
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Abstract
The utility model discloses an intelligent sewing machine power control system, it includes the AC input that connects gradually, EMI filtering unit, rectification filtering unit, transformer unit, 27V output rectifier unit, 5V output rectifier unit, PWM control unit, output voltage feedback loop, the 27V output of 27V output rectifier unit and the 5V output of 5V output rectifier unit all connect the output interface, and the AC input still is connected with the supplementary detection circuit of electric wire netting circuit, the supplementary detection circuit of electric wire netting circuit connects the output interface, the main control panel of sewing machine is connected to the output interface, the purpose of doing so is to improve sewing machine job stabilization nature, when sewing machine starts an instant, judge at first whether the voltage of electric wire netting has reached safe starting voltage, if the sewing machine just gets into the start mode, if not just continue waiting, the load of electric wire netting has effectively been reduced, the use is safer and more reliable.
Description
The technical field is as follows:
the utility model relates to a sewing machine power technology field refers in particular to an intelligence sewing machine power control system.
Background art:
with the rising of labor cost and the upgrading of the Internet, artificial intelligence and the Internet of things are new growth points for economic development in the future. The automatic intelligent assembly line can achieve unmanned operation, and the connection and coordination of each process link are upgraded from traditional employee identification to self identification and judgment among process devices. Industrial category sewing machines are also constantly upgrading from a simple single operation to a multiple cooperation, which will be upgraded from manual operation to intelligent unmanned management operation. The intelligent sewing machine gains the favor of entrepreneurs with powerful functions, and the intelligent sewing machine is no exception as long as electronic products need a power supply to provide energy for the intelligent sewing machine.
The safety of the machine is the basic requirement of the product, the design of the power supply control system of the intelligent sewing machine is particularly critical, the power of the industrial sewing machine is large, the power supply control system causes great interference to a power grid at the moment of starting, and particularly when a plurality of devices work simultaneously and the like, which are considered and solved in the research.
In recent years, environmental protection and energy conservation are more and more emphasized in various countries in the world, and a high-efficiency and safe intelligent sewing machine power supply control system is developed and must be considered and researched by professional power supply manufacturers.
Therefore, the present inventors propose the following.
The utility model has the following contents:
an object of the utility model is to overcome prior art not enough, provide an intelligence sewing machine power control system.
In order to solve the technical problem, the utility model discloses a following technical scheme: the intelligent sewing machine power control system comprises an AC input end, an EMI filtering unit, a rectifying and filtering unit, a transformer unit, a 27V output rectifying unit and a 5V output rectifying unit connected with a 27V output end of the 27V output rectifying unit, a PWM control unit connected with the transformer unit, an output voltage feedback loop connected with the PWM control unit and the 27V output rectifying unit, an output interface is connected with a 27V output end of the 27V output rectifying unit and a 5V output end of the 5V output rectifying unit, an electric network circuit auxiliary detection loop is connected with the AC input end, the electric network circuit auxiliary detection loop is connected with the output interface, and the output interface is connected with a main control panel of a sewing machine.
Further, in the above technical solution, the PWM control unit includes a PWM main control chip, the PWM main control chip is connected to the output voltage feedback loop through a first optical coupler, and the model of the PWM main control chip is TEA 1733T.
Further, in the above technical solution, the output voltage feedback loop includes a sampling resistor R28 and a sampling resistor R27 connected to the 27V output rectifying unit, a reference voltage chip connected to the sampling resistor R27, and a transistor Q3 connected to the reference voltage chip, and both the reference voltage chip and the transistor Q3 are connected to the first optocoupler.
Further, in the above technical solution, the power grid circuit auxiliary detection loop includes an AC input sampling unit and a control feedback system loop, the AC input sampling unit is connected to the control feedback system loop through a second optocoupler, the AC input sampling unit is connected to an AC input end, and the control feedback system loop is connected to the output interface.
Further, in the above technical solution, the AC input sampling unit includes a sampling resistor R17, a sampling resistor R18, a sampling resistor R19, a diode D7, and a diode D5 that are sequentially connected in series, the sampling resistor R17 is connected to the positive electrode of the AC input terminal, the cathode of the diode D5 is connected to the negative electrode of the AC input terminal, and the cathode of the diode D7 and the anode of the diode D5 are connected to the second optocoupler.
Further, in the above technical solution, the control feedback system loop includes a MOS transistor Q1, a G pole of the MOS transistor Q1 is connected to a resistor R51 and then connected to a second optical coupler, and a D pole of the MOS transistor Q1 and the second optical coupler are connected to the output interface.
Further, in the above technical solution, an RT thermistor is disposed between the AC input terminal and the EMI filter unit; and the 27V output end is connected with a PTC thermistor.
Further, in the above technical solution, the 27V output rectifying unit includes a pi filter composed of an inductor L1, a capacitor C11 and a capacitor C10 and connected to the transformer unit, a first common mode inductor LF3 connected to the pi filter, and the 27V output terminal connected to the first common mode inductor LF 3.
Furthermore, in the above technical solution, the 5V output rectifying unit includes a fuse F2 connected to the 27V output terminal, a resistor R33 sequentially connected to the fuse F2, a transistor Q4 connected to the resistor R33, an inductor L2, the 5V output terminal, and a power management chip connected to the resistor R33 and controlling whether the transistor Q4 is turned on or off.
After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the utility model discloses after connecing the commercial power, exportable 27V and 5V's DC regulated power supply, with satisfy different user demands, just the utility model discloses add the supplementary detection circuit of grid circuit, and pass through the rectification sampling with the alternating current of AC input through the supplementary detection circuit of this grid circuit, and will feed back the condition of electric wire netting to sewing machine's main control panel, the purpose of doing so is exactly to improve the stability of sewing machine work, in the twinkling of an eye when sewing machine starts, at first judge whether the voltage of electric wire netting has reached safe start voltage, if there is sewing machine just to get into start mode, if do not just continue to wait, the effectual load that has reduced the electric wire netting, use safe and reliable more, the order the utility model discloses extremely strong market competition has.
Description of the drawings:
fig. 1 is a circuit diagram of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
As shown in fig. 1, the power control system for the intelligent sewing machine includes an AC input terminal 1, an EMI filter unit 2, a rectifier filter unit 3, a transformer unit 4, a 27V output rectifier unit 5, a 5V output rectifier unit 7 connected to a 27V output terminal 51 of the 27V output rectifier unit 5, a PWM control unit 8 connected to the transformer unit 4, and an output voltage feedback loop 9 connected to the PWM control unit 8 and the 27V output rectifier unit 5, wherein the 27V output terminal 51 of the 27V output rectifier unit 5 and the 5V output terminal 71 of the 5V output rectifier unit 7 are both connected to an output interface 10, the AC input terminal 1 is further connected to a grid circuit auxiliary detection loop 6, the grid circuit auxiliary detection loop 6 is connected to the output interface 10, and the output interface 10 is connected to a main control board of the sewing machine. The utility model discloses after connecing the commercial power, exportable 27V and 5V's DC regulated power supply, with satisfy different user demands, just the utility model discloses it assists detection circuit 6 to add the electric wire netting circuit, and pass through the rectification sampling with the alternating current of AC input through this electric wire netting circuit assists detection circuit 6, and will feed back sewing machine's main control panel to the condition of electric wire netting, the purpose of doing so is exactly to improve sewing machine job stabilization nature, in the twinkling of an eye when sewing machine starts, at first judge whether the voltage of electric wire netting has reached safe start voltage, if there is sewing machine just to get into start mode, if do not just continue to wait, the effectual load that has reduced the electric wire netting, use safe and reliable more, the order the utility model discloses extremely strong market competition has.
The PWM control unit 8 includes a PWM main control chip 81, the PWM main control chip 81 is connected to the output voltage feedback loop 9 through a first optocoupler 82, and the model of the PWM main control chip 81 is TEA 1733T. TEA1733T is a fixed frequency IC with low working current, high efficiency and 65KHz working frequency, and has the functions of short circuit protection, external temperature protection and the like.
The output voltage feedback loop 9 comprises a sampling resistor R28 and a sampling resistor R27 connected with the 27V output rectifying unit 5, a reference voltage chip 91 connected with the sampling resistor R27, and a triode Q3 connected with the reference voltage chip 91, wherein the reference voltage chip 91 and the triode Q3 are both connected with the first optocoupler 82. The output voltage is divided by the sampling resistor R28 and the sampling resistor R27, and then compared with the reference pin (pin 1) of the reference voltage chip 91, so as to control the light emitting intensity of the diode inside the first optocoupler 82, and feed back the light emitting intensity to the primary PWM main control chip 81 in a voltage manner. The PWM main control chip 81 adjusts the width of the pulse according to the magnitude of the feedback voltage, and finally stabilizes the output voltage.
The grid circuit auxiliary detection loop 6 comprises an AC input sampling unit 61 and a control feedback system loop 62, the AC input sampling unit 61 is connected with the control feedback system loop 62 through a second optical coupler 63, the AC input sampling unit 61 is connected with the AC input end 1, and the control feedback system loop 62 is connected with the output interface 10.
The AC input sampling unit 61 includes a sampling resistor R17, a sampling resistor R18, a sampling resistor R19, a diode D7 and a diode D5 which are connected in series in sequence, the sampling resistor R17 is connected to the positive pole of the AC input terminal 1, the cathode of the diode D5 is connected to the negative pole of the AC input terminal 1, and the cathode of the diode D7 and the anode of the diode D5 are connected to the second optocoupler 63.
The AC input voltage forms a half-wave rectification loop through the sampling resistor R17, the sampling resistor R18, the sampling resistor R19, the diode D7, the second optical coupler 63 and the diode D5, and when the diode D5 is switched on, the second optical coupler 63 is switched on to form a photosensitive signal which is transmitted to the control feedback system loop 62.
The control feedback system loop 62 comprises a MOS transistor Q1, a G pole of the MOS transistor Q1 is connected with a resistor R51 and then connected with a second optocoupler 63, and a D pole of the MOS transistor Q1 and the second optocoupler 63 are connected with the output interface 10. When receiving the voltage signal transmitted from the AC input sampling unit 61, the driving MOS transistor Q1 is turned on, and the output terminal LINE enters a 0-level potential from a floating state and is transmitted to the main control board of the sewing machine.
An RT thermistor 11 is arranged between the AC input end 1 and the EMI filtering unit 2; the 27V output terminal 51 is connected with a PTC thermistor 52. When the sewing machine enters an abnormal operation mode and the secondary current rapidly rises, the PTC thermistor 52 is fused after about 5 minutes as the resistance of the PTC thermistor 52 increases with the increase of the current, and the PTC thermistor 52 automatically recovers when the abnormality is relieved. When the load is not overloaded or overpowered, the PTC thermistor 52 will not act, and at this time, if the temperature of the whole machine is too high, the 6 pin of the PWM main control chip 81 will act, and the primary PWM is turned off to force the output to be turned off.
The 27V output rectifying unit 5 includes a pi filter composed of an inductor L1, a capacitor C11 and a capacitor C10 connected to the transformer unit 4, a first common mode inductor LF3 connected to the pi filter, and the 27V output terminal 51 connected to the first common mode inductor LF 3.
The 5V output rectifying unit 7 includes a fuse F2 connected to the 27V output terminal 51, a resistor R33 sequentially connected to the fuse F2, a transistor Q4 connected to the resistor R33, an inductor L2, the 5V output terminal 71, and a power management chip 72 connected to the resistor R33 and controlling whether the transistor Q4 is turned on or off.
To sum up, the utility model discloses after connecing the commercial power, exportable 27V and 5V's DC regulated power supply, in order to satisfy different user demands, just the utility model discloses it assists detection circuit 6 to add the electric wire netting circuit, and pass through the rectification sampling with the alternating current of AC input through this electric wire netting circuit assists detection circuit 6, and will feed back sewing machine's the main control panel to the condition of electric wire netting, the purpose of doing so is exactly to improve sewing machine job stabilization nature, in the twinkling of an eye when sewing machine starts, at first whether the voltage of judging the electric wire netting has reached safe start voltage, if there is sewing machine just to get into start mode, if do not just continue to wait, the effectual load that has reduced the electric wire netting, use safe and reliable more, the order the utility model discloses extremely strong market competition has.
Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. Intelligence sewing machine power control system, its characterized in that: which comprises an AC input end (1), an EMI filtering unit (2), a rectifying and filtering unit (3), a transformer unit (4), a 27V output rectifying unit (5), a 5V output rectifying unit (7) connected with a 27V output end (51) of the 27V output rectifying unit (5), a PWM control unit (8) connected with the transformer unit (4), and an output voltage feedback loop (9) connected with the PWM control unit (8) and the 27V output rectifying unit (5), the 27V output end (51) of the 27V output rectifying unit (5) and the 5V output end (71) of the 5V output rectifying unit (7) are both connected with an output interface (10), and the AC input end (1) is also connected with a power grid circuit auxiliary detection loop (6), the power grid circuit auxiliary detection loop (6) is connected with an output interface (10), and the output interface (10) is connected with a main control panel of the sewing machine.
2. The intelligent sewing machine power control system of claim 1, wherein: the PWM control unit (8) comprises a PWM main control chip (81), the PWM main control chip (81) is connected with an output voltage feedback loop (9) through a first optical coupler (82), and the model of the PWM main control chip (81) is TEA 1733T.
3. The intelligent sewing machine power control system of claim 2, wherein: the output voltage feedback loop (9) comprises a sampling resistor R28 and a sampling resistor R27 which are connected with the 27V output rectifying unit (5), a reference voltage chip (91) which is connected with the sampling resistor R27 and a triode Q3 which is connected with the reference voltage chip (91), wherein the reference voltage chip (91) and the triode Q3 are both connected with the first optocoupler (82).
4. The intelligent sewing machine power control system of any one of claims 1-3, wherein: the power grid circuit auxiliary detection loop (6) comprises an AC input sampling unit (61) and a control feedback system loop (62), the AC input sampling unit (61) is connected with the control feedback system loop (62) through a second optical coupler (63), the AC input sampling unit (61) is connected with an AC input end (1), and the control feedback system loop (62) is connected with the output interface (10).
5. The intelligent sewing machine power control system of claim 4, wherein: the AC input sampling unit (61) comprises a sampling resistor R17, a sampling resistor R18, a sampling resistor R19, a diode D7 and a diode D5 which are sequentially connected in series, wherein the sampling resistor R17 is connected with the anode of the AC input end (1), the cathode of the diode D5 is connected with the cathode of the AC input end (1), and the cathode of the diode D7 and the anode of the diode D5 are connected with the second optocoupler (63).
6. The intelligent sewing machine power control system of claim 4, wherein: the control feedback system loop (62) comprises an MOS transistor Q1, the G pole of the MOS transistor Q1 is connected with a resistor R51 and then connected with a second optical coupler (63), and the D pole of the MOS transistor Q1 and the second optical coupler (63) are connected with the output interface (10).
7. The intelligent sewing machine power control system of claim 4, wherein: an RT thermistor (11) is arranged between the AC input end (1) and the EMI filtering unit (2); and the 27V output end (51) is connected with a PTC thermistor (52).
8. The intelligent sewing machine power control system of claim 4, wherein: the 27V output rectifying unit (5) comprises a pi-shaped filter which is connected with the transformer unit (4) and consists of an inductor L1, a capacitor C11 and a capacitor C10, a first common mode inductor LF3 connected with the pi-shaped filter, and the 27V output end (51) connected with the first common mode inductor LF 3.
9. The intelligent sewing machine power control system of claim 4, wherein: the 5V output rectifying unit (7) comprises a fuse F2 connected with a 27V output end (51), a resistor R33 sequentially connected with the fuse F2, a triode Q4 connected with the resistor R33, an inductor L2, the 5V output end (71) and a power management chip (72) connected with the resistor R33 and controlling the conduction of the triode Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021104815.1U CN212115180U (en) | 2020-06-15 | 2020-06-15 | Intelligent sewing machine power supply control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021104815.1U CN212115180U (en) | 2020-06-15 | 2020-06-15 | Intelligent sewing machine power supply control system |
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| Publication Number | Publication Date |
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| CN212115180U true CN212115180U (en) | 2020-12-08 |
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| CN202021104815.1U Active CN212115180U (en) | 2020-06-15 | 2020-06-15 | Intelligent sewing machine power supply control system |
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| CN (1) | CN212115180U (en) |
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