CN2738289Y - Stable tension computer automatic control device - Google Patents
Stable tension computer automatic control device Download PDFInfo
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- CN2738289Y CN2738289Y CN 200420025783 CN200420025783U CN2738289Y CN 2738289 Y CN2738289 Y CN 2738289Y CN 200420025783 CN200420025783 CN 200420025783 CN 200420025783 U CN200420025783 U CN 200420025783U CN 2738289 Y CN2738289 Y CN 2738289Y
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Abstract
The utility model discloses an automatic control device of stable-tension computer belonging to automatic control device for online monitoring and feedback control for take-up tension of wiredrawer. Aiming to the defect of unstable take-up tension in prior art, the old style torque motor of the wiredrawer in prior art is replaced by the frequency variable motor, and meanwhile a tension detecting device and a tension signal given processing device connected with the tension detecting device are added. The detected take-up tension signal of the wiredrawer is transmitted to the tension signal given processing device by the tension detecting device, and after the signal is processed, the signal for controlling the rotational speed of the wiredrawer motor is transmitted to the connected take-up converter for regulating the wiredrawer motor timely, which allows the wiredrawer to work in the state of stable tension all along. The operation of the utility model is stable. The product quality is high. The problems of unstable tension, easy fracture of wire and easy press of wire in former are solved.
Description
(1) technical field:
The utility model belongs to the apparatus for automatic control of wire drawing machine takeup tension, relates in particular to the automaton that a kind of wire drawing machine takeup tension carries out on-line monitoring and FEEDBACK CONTROL.
(2) background technology:
Wire drawing machine is the common equipment in the manufacturing industry such as steel cord.In the prior art, wire drawing machine is to drive by torque motor to finish the traction take-up.The drawback of prior art is: tension force instability in the take-up process, easily fracture of wire, easy silk pressing, and serious even can rise and split Receiving wire wheel, have a strong impact on the ordinary production of product quality and next procedure.
(3) summary of the invention:
The utility model is intended to overcome the deficiencies in the prior art, and a kind of stable tension force computing machine automaton is provided, and it in time regulates the wire drawing machine motor according in good time detected wire drawing machine takeup tension, makes wire drawing machine always work in the state of tension stability.
The utility model is achieved in that old-fashioned moment traction electric machine and the take-up motor with wire drawing machine all replaces with variable-frequency motor, increase by a tension detecting apparatus simultaneously, one mainly by power circuit, single-chip microcomputer, A/D converter, the tension signal that D/A converter etc. are formed is handled setter, the detected tension signal of described tension detecting apparatus, the signal of reflection traction electric machine duty, the signal of reflection wire drawing machine electric machine operation state all is input in the tension signal processing setter in the lump with the form of curtage signal, by it above-mentioned signal is handled, and the signal of output control wire drawing machine take-up motor speed is controlled wire drawing machine take-up motor to the take-up frequency converter.Thereby, make wire drawing machine always work in comparatively stable status of takeup tension according to real-time tension force dynamic adjustments wire drawing machine take-up motor speed.
Specifically, a kind of stable tension force computing machine automaton comprises wire drawing machine, and it is characterized in that: the traction electric machine of described wire drawing machine and take-up motor are variable-frequency motor, and it also comprises,
The traction electric machine frequency converter, it will reflect the form output of the signal of traction electric machine rotating speed with the curtage signal;
Take-up motor frequency conversion device, it will reflect the form output of the signal of take-up motor speed with the curtage signal;
One tension detecting apparatus is made up of a mechanical type tension force detection arm and tension pick-up etc., by sensor the detection arm displacement signal of the detected reflection takeup tension of mechanical type tension force detection arm size is converted to the output of curtage signal;
The given treating apparatus of one tension signal mainly is made up of power circuit 1, power circuit 2, single-chip microcomputer, A/D converter, D/A converter, photoelectric isolating circuit, programmable controller PLC, communication interface, control knob, display, keyboard etc.,
Three analog quantity input ends of described A/D converter respectively with the traction electric machine inverter output terminal, the output terminal of sensor in the tension detecting apparatus, wire drawing machine take-up motor frequency conversion device output terminal is connected, its analog quantity output terminal is connected with wire drawing machine motor frequency conversion device input end, its output terminal is input in the single-chip microcomputer through photoelectric isolating circuit, this A/D converter also is connected with power circuit 2, described traction electric machine inverter output terminal, the output terminal of sensor in the tension detecting apparatus, three of the output of wire drawing machine take-up motor frequency conversion device output terminal reflect the traction electric machine rotating speed respectively, the takeup tension size, the analog signals of wire drawing machine motor speed is successively through A/D converter, photoelectric isolating circuit is converted to digital signal and is input in the single-chip microcomputer;
Described control knob, display, keyboard all are connected with programmable controller PLC by the I/O interface, then be connected with single-chip microcomputer by being attached thereto the communication interface RS232 conversion that connects, be input in the single-chip microcomputer with the signal that control knob and keyboard are sent, the signal of the reflection takeup tension of single-chip microcomputer output is outputed to display;
Described single-chip microcomputer is connected with power circuit 1 and provides power supply by this power circuit, the output terminal of this single-chip microcomputer is connected with the input end of take-up motor frequency conversion device through photoelectric isolating circuit, D/A converter successively, is converted to analog signals with the digital signal that is used to control the take-up machine operation with single-chip microcomputer output and offers take-up motor frequency conversion device.
Below in conjunction with the theory diagram labor course of work of the present utility model:
A/D converter 6 is connected with power circuit 2 and provides power supply by this power circuit, its output terminal is input in the single-chip microcomputer 4 through photoelectric isolating circuit 4, is converted to digital signal and is input in the single-chip microcomputer with the analog signals that reflects traction electric machine rotating speed, takeup tension size, wire drawing machine motor speed respectively with above-mentioned three; At this, the effect of photoelectric isolating circuit 4 is anti-tampering.
Single-chip microcomputer 3 is connected with power circuit 1 and provides power supply by this power circuit, and it obtains the reel coil diameter according to by the instruction of PLC12 the signal value that reflects traction electric machine rotating speed, wire drawing machine motor speed respectively being calculated, and calculates synchronous matching frequency instruction.Tension signal and tension force setting value by the tension detecting apparatus feedback constitutes the PID closed loop then, adjusts the frequency instruction of frequency converter.And with this frequency signal output.
Here, reel coil diameter computing formula is as follows:
D＝(I*V)/(Л*N)
Coil diameter that D=asks in the formula
I=take-up register ratio
V=wire rod linear velocity
The N=motor speed
After the real-time coil diameter of linear velocity and reel all obtains, just can calculate the synchronous matching instruction of take-up frequency converter.Formula is as follows:
F＝(V*P*I)/(Л*D)
The synchronous matching instruction of F=frequency converter in the formula
V=line of material speed
P=motor number of pole-pairs
The I=register ratio
D=reel coil diameter
When the wire rod linear velocity is on the low side, coil diameter is calculated fluctuation can be bigger, so at the analog quantity output threshold value of a traction frequency convertor of given tension telltale internal preset, when analog quantity output valve during less than threshold value, coil diameter is calculated and is not worked, and wire tension was stable when this case can guarantee low speed.
D/A converter 7 is connected with power circuit 2 and provides power supply by this power circuit, and its input end is connected through the output terminal of photoelectric isolating circuit 4 with single-chip microcomputer 3, and its output terminal is connected with the input end of take-up motor frequency conversion device 10.The frequency signal of controlling the take-up machine operation was converted to analog signals through D/A converter and offered take-up motor frequency conversion device being used to of above-mentioned single-chip microcomputer output, thus timely adjustment take-up motor speed.Realize that by the control motor speed takeup tension is constant.
The utility model matches with software, has effectively solved the problem of tension force instability in the take-up process, easy fracture of wire, easy silk pressing, has improved product quality widely, has guaranteed the ordinary production of next procedure.Stable, the product quality height has produced high economic benefit.
(4) description of drawings:
Fig. 1 is the utility model functional-block diagram
Fig. 2 is the circuit diagram of the utility model embodiment 1
Fig. 3 is the circuit diagram of the utility model embodiment 2
Among the figure: C--electric capacity D--diode L--inductance P--optocoupler R--resistance R W--adjustable resistance TR--triode U--integrated circuit X--crystal oscillator
(5) embodiment:
The utility model embodiment 1, referring to accompanying drawing 2, the utility model embodiment 1 comprises the traction variable-frequency motor of wire drawing machine, the take-up variable-frequency motor, the traction electric machine frequency converter, take-up motor frequency conversion device, the tension detecting apparatus of forming by mechanical type tension force detection arm and tension pick-up etc., power circuit 1, power circuit 2, single-chip microcomputer, A/D converter, D/A converter, photoelectric isolating circuit, programmable controller PLC, communication interface, control knob, display, compositions such as keyboard, tension force displacement transducer 9 (Baruch husband displacement transducer BAW 018-PB-1-K-03) and two frequency converters 10,16 three tunnel analog quantitys output is after analog to digital conversion, deliver to CPU through the high-speed light lotus root, by the CPU corresponding action process of finishing dealing with, and utilize digital PID to finish adjusting to various analog quantitys, set tension force and deliver to CPU by setting display unit with communication modes, the running frequency value of frequency converter is delivered to frequency converter by 485 mouthfuls.
Single-chip microcomputer 3 adopts DS80C320, and it has and 8051 identical encapsulation, and the 8051 all functions that have that provide simultaneously are as I/O mouth, Timer, serial port etc.Remove travelling speed and accelerate, it also provides 1 full-duplex serial interface in addition, 7 new interruptions, programmable watchdog timer, power-fail interrupt and reset etc.; On this basis, DS80C320 has also increased by 2 functions that are used to improve the RAM data access, i.e. the outer RAM store access cycle expanded function of Double Data pointer and programmable chip.
This embodiment expands 64K external program memory and 32K external data memory with 1 static U12 (RAM 62256) and a slice U11 (EPROM 27512).P0 mouth and P2 mouth are as parallel expansion bus mouth, P2 mouth output most-significant byte address A8～A15, P0 mouth output least-significant byte address A0～A7 and transmission data D0～D7, the least-significant byte of address bus A0～A7 is sent into address latch U9 (74HC373) by the P0 mouth, and the negative edge of address latch signal ALE that utilizes DS80C320 is with the address latch of P0 mouth output.What control bus had an external program memory reads to select signal PSEN, the read-write RD (P3.7) of external data memory and WR (P3.6).
U10 (X25045) provide the independent protection system as WatchDog Timer to microcontroller.It provides three kinds of timings, and 200ms, 600ms and 1.2s are selected in available programming, if in the time of setting, X25045 is not conducted interviews, then house dog is cooked the output response with the RESET signal, promptly becomes high level, and RESET becomes low level by high level after the time-delay 200ms.X25045 can also when powering on, after supply voltage surpasses 4.5V, become low level through RESET signal after the stabilization time of 200ms by high level as voltage monitoring.During power down, when supply voltage was lower than 4.5V, the RESET signal became high level at once and remains to power up till stable always.
The RS-232 communication interface is connected to the setting display unit in the system, and the RS-485 communication interface is connected to frequency converter.
Three road analog signalses select 1 analogue quantity switch 4501 through 8, deliver to discharge circuit, remake the ADC conversion.Be 12 A/D converters of serial output with MAX187 in the ADC change-over circuit, adopt three serial line interface lines.The gating signal of analogue quantity switch is provided by MAX595.
The utility model embodiment 2, referring to accompanying drawing 3, equally, it is by the traction variable-frequency motor, the take-up variable-frequency motor, the traction electric machine frequency converter, take-up motor frequency conversion device, the tension detecting apparatus of forming by mechanical type tension force detection arm and tension pick-up etc., power circuit 1, power circuit 2, single-chip microcomputer, A/D converter, D/A converter, photoelectric isolating circuit, programmable controller PLC, communication interface, control knob, display, compositions such as keyboard, the traction electric machine frequency converter, take-up motor frequency conversion device, tension pick-up is connected with three analog quantity input ends of A/D converter respectively, will reflect traction electric machine, the signal of take-up motor speed and reflection takeup tension high low signal are converted to digital signal and through photoelectric isolating circuit 4 and be input in the single-chip microcomputer 3 through A/D converter 6; Control knob 13, display 15, keyboard 14 all are connected with programmable controller PLC12 by the I/O interface, then be connected with single-chip microcomputer 3 by being attached thereto the communication interface RS232 conversion that connects 5, be input in the single-chip microcomputer with the signal that control knob and keyboard are sent, the signal of the reflection takeup tension of single-chip microcomputer 3 outputs is outputed to display 15; Single-chip microcomputer 3 receives that the instruction of sending according to control knob 13 and keyboard 14 behind three signals that reflect traction electric machine rotating speed, takeup tension size, wire drawing machine motor speed respectively and the calculation procedure of setting handle it, and being used to of will exporting the digital signal of controlling the take-up machine operation be converted to analog signals and offer take-up motor frequency conversion device 10 through being attached thereto the photoelectric isolating circuit 4, the D/A converter 7 that connect.Thereby, make wire drawing machine always work in the state of tension stability according to detected wire drawing machine takeup tension is in time regulated the wire drawing machine motor speed.
Finished product on sale is disclosed on the market because of frequency converter, tension pick-up, programmable controller PLC etc. are, only provided partial circuit figure among Fig. 3, and provided mutual annexation, this for those of ordinary skills, need not pay creative work can reveal again.Need to prove that at this wherein, the 3 tunnel analog quantitys input Vi1～Vi3 in the AD conversion 6 is by S0, S1 gating through U2 analogue quantity switch 4051.Send into U7 (MAX187) by amplifier U3 (OP07C) again and carry out the AD conversion.The reference voltage V ref of U8 is obtained by adjustable resistance RW3 in the DA conversion 7.
Claims (1)
1, a kind of stable tension force computing machine automaton comprises wire drawing machine, and it is characterized in that: the traction electric machine of described wire drawing machine and take-up motor are variable-frequency motor, and it also comprises,
The traction electric machine frequency converter;
Take-up motor frequency conversion device;
Tension detecting apparatus is made up of a mechanical type tension force detection arm and the tension pick-up that is attached thereto, the curtage signal of described sensor output reflection takeup tension size;
The given treating apparatus of tension signal is made up of power circuit 1, power circuit 2, single-chip microcomputer, A/D converter, D/A converter, photoelectric isolating circuit, programmable controller PLC, communication interface, control knob, display, keyboard,
Three analog quantity input ends of described A/D converter respectively with the traction electric machine inverter output terminal, the output terminal of sensor in the tension detecting apparatus, wire drawing machine take-up motor frequency conversion device output terminal is connected, its analog quantity output terminal is connected with wire drawing machine motor frequency conversion device input end, its output terminal is input in the single-chip microcomputer through photoelectric isolating circuit, this A/D converter also is connected with power circuit 2, described traction electric machine inverter output terminal, the output terminal of sensor in the tension detecting apparatus, wire drawing machine take-up motor frequency conversion device output terminal is all successively through A/D converter, photoelectric isolating circuit is connected with single-chip microcomputer respectively;
Described control knob, display, keyboard all are connected with programmable controller PLC by the I/O interface, are connected with single-chip microcomputer by being attached thereto the communication interface that connects then;
Described single-chip microcomputer is connected with power circuit 1 and provides power supply by this power circuit, and the output terminal of this single-chip microcomputer is connected with the input end of take-up motor frequency conversion device through photoelectric isolating circuit, D/A converter successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025783 CN2738289Y (en) | 2004-03-26 | 2004-03-26 | Stable tension computer automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025783 CN2738289Y (en) | 2004-03-26 | 2004-03-26 | Stable tension computer automatic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738289Y true CN2738289Y (en) | 2005-11-02 |
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ID=35348194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420025783 Expired - Fee Related CN2738289Y (en) | 2004-03-26 | 2004-03-26 | Stable tension computer automatic control device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590565C (en) * | 2007-10-09 | 2010-02-17 | 广东新会美达锦纶股份有限公司 | System for detecting and monitoring thread tension on production line |
| CN103176431A (en) * | 2011-12-21 | 2013-06-26 | 新昌县盛大科技有限公司 | Automatic optimization process for graphite spheroidization production parameters |
| CN111496011A (en) * | 2020-04-08 | 2020-08-07 | 深圳市海浦蒙特科技有限公司 | Speed control method and device for winding motor of wire drawing machine, computer equipment and medium |
| CN112152139A (en) * | 2020-08-14 | 2020-12-29 | 国家电网有限公司 | Bird's nest demolishs instrument for electric power engineering |
| CN113201953A (en) * | 2021-04-28 | 2021-08-03 | 江苏兴达钢帘线股份有限公司 | Automatic adjusting device and adjusting method for core wire tension of pulse box of stranding machine tool |
| CN113485225A (en) * | 2021-06-19 | 2021-10-08 | 张家港三丰机电开发有限公司 | Movable take-up type crimping machine for take-up shaft and control system of movable take-up type crimping machine |
-
2004
- 2004-03-26 CN CN 200420025783 patent/CN2738289Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590565C (en) * | 2007-10-09 | 2010-02-17 | 广东新会美达锦纶股份有限公司 | System for detecting and monitoring thread tension on production line |
| CN103176431A (en) * | 2011-12-21 | 2013-06-26 | 新昌县盛大科技有限公司 | Automatic optimization process for graphite spheroidization production parameters |
| CN111496011A (en) * | 2020-04-08 | 2020-08-07 | 深圳市海浦蒙特科技有限公司 | Speed control method and device for winding motor of wire drawing machine, computer equipment and medium |
| CN112152139A (en) * | 2020-08-14 | 2020-12-29 | 国家电网有限公司 | Bird's nest demolishs instrument for electric power engineering |
| CN113201953A (en) * | 2021-04-28 | 2021-08-03 | 江苏兴达钢帘线股份有限公司 | Automatic adjusting device and adjusting method for core wire tension of pulse box of stranding machine tool |
| CN113485225A (en) * | 2021-06-19 | 2021-10-08 | 张家港三丰机电开发有限公司 | Movable take-up type crimping machine for take-up shaft and control system of movable take-up type crimping machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051102 Termination date: 20120326 |