CN101850371B - Straight wire drawing machine system - Google Patents

Straight wire drawing machine system Download PDF

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Publication number
CN101850371B
CN101850371B CN2010101765996A CN201010176599A CN101850371B CN 101850371 B CN101850371 B CN 101850371B CN 2010101765996 A CN2010101765996 A CN 2010101765996A CN 201010176599 A CN201010176599 A CN 201010176599A CN 101850371 B CN101850371 B CN 101850371B
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CN
China
Prior art keywords
wire drawing
drawing unit
frequency converter
data
output frequency
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Expired - Fee Related
Application number
CN2010101765996A
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Chinese (zh)
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CN101850371A (en
Inventor
陈文学
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DONGGUAN KELEE STEEL WIRE Co Ltd
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DONGGUAN KELEE STEEL WIRE Co Ltd
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Abstract

The invention relates to the technical field of wire drawing machines, in particular to a straight wire drawing machine system. The system comprises a PLC and two or more wire drawing units, wherein each wire drawing unit comprises a frequency converter, a motor, a gearing and a bobbin; and a tension detecting device is arranged between adjacent two wire drawing units. The invention provides the straight wire drawing machine system; and a formula of a wire drawing rule is compiled and is stored in the frequency converter, so that a general electrician can debug a machine according to the specification of the frequency converter only by inputting corresponding data into the frequency converter. Therefore, the system has very high practicability and points out a direction for the development of the frequency converter special for wire drawing; PLC programming and debugging work of the wire drawing machine is greatly simplified after a program is stored in the frequency converter; and high practicability is achieved.

Description

A kind of straight wire drawing machine system
Technical field
The present invention relates to the wire drawing machine technical field, refer in particular to a kind of straight wire drawing machine system.
Background technology
Wire drawing machine is a kind of processing equipment that the major diameter metal wire rod is become a kind of small diameter metal wire material through the multi-pass drawing deformation.Straight drawing machine generally comprises two or more wire drawings unit, and the wire drawing unit comprises motor that the drive wire tube rotates and the frequency converter that is connected with electric electromechanics, utilizes the frequency conversion function of frequency converter to realize the speed governing effect to motor.
At present, the proportional linkage scheme of straight wire drawing machine system is following: be made up of PLC, touch-screen, feedback device and frequency converter; The effect of touch-screen is human-computer dialogue, and more the operator imports data through touch-screen to PLC during mold exchange; Be similar to the position detecting device of tension bracket, change in location is fed back to frequency converter.Wherein, PLC has two effects, and the one, control startup, parking, crawl and other corresponding logical relation of each wire drawing unit; The 2nd, accomplish complicated program and calculating.
The shortcoming of frequency converter present situation of proportional linkage on straight drawing machine: programming and programme-control are all accomplished through PLC, PLC programming and calculate more complicated, and a lot of data are arranged in the programming process is field adjustable personnel collection in worksite; The degree of accuracy is lower; In addition, the program of finishing is ability usefulness on this machine, copies on another machine and can not use again; Versatility is relatively poor, is difficult to apply.
Summary of the invention
The technical problem that the present invention will solve provides a kind of simple, practical straight wire drawing machine system of work of debugging; The programming of a kind of straight wire drawing machine system according to the invention is simple, the program versatility is high; Program Solidification is inner at frequency converter; Simplified the debugging work of wire drawing machine greatly, practical.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of straight wire drawing machine system; Comprise PLC, two or more wire drawings unit; The wire drawing unit comprises frequency converter, motor, transmission device and line tube, is provided with tension detecting apparatus between the two adjacent wire drawing unit, and the control method of said frequency converter comprises:
If
Figure 973522DEST_PATH_IMAGE001
is the arrangement sequence number of wire drawing unit;
Figure 326881DEST_PATH_IMAGE001
is the non-zero natural number, and the output frequency
Figure 439511DEST_PATH_IMAGE003
of
Figure 44301DEST_PATH_IMAGE002
individual wire drawing unit frequency converter calculates and comprises;
A) for fine-tuning the correction coefficient
Figure 129249DEST_PATH_IMAGE004
of data, the first
Figure 951712DEST_PATH_IMAGE001
a drawing unit motor rated speed
Figure 654963DEST_PATH_IMAGE005
data transmission ratio
Figure 853863DEST_PATH_IMAGE006
data, spool diameter
Figure 460425DEST_PATH_IMAGE007
data, stencil aperture
Figure 391472DEST_PATH_IMAGE008
of data, the first a drawing unit motor rated speed
Figure 820496DEST_PATH_IMAGE009
data transmission ratio
Figure 780100DEST_PATH_IMAGE010
The data, the spool diameter
Figure 209944DEST_PATH_IMAGE011
data, stencil aperture
Figure 389253DEST_PATH_IMAGE012
data;
B) calculate total correction factor
Figure 245530DEST_PATH_IMAGE013
of
Figure 664376DEST_PATH_IMAGE002
individual wire drawing unit, its computing formula is:
Figure 518380DEST_PATH_IMAGE014
；
C) Get first a drawing unit inverter output frequency
Figure 762334DEST_PATH_IMAGE015
;
D) calculate the output frequency
Figure 969642DEST_PATH_IMAGE003
of the frequency converter of
Figure 197995DEST_PATH_IMAGE002
individual wire drawing unit; Total correction factor
Figure 740469DEST_PATH_IMAGE013
of said
Figure 857963DEST_PATH_IMAGE002
individual wire drawing unit is the frequency converter output frequency
Figure 409402DEST_PATH_IMAGE003
of
Figure 30636DEST_PATH_IMAGE002
individual wire drawing unit and the ratio of the frequency converter output frequency of
Figure 847337DEST_PATH_IMAGE001
individual wire drawing unit, and its computing formula is:
Figure 615889DEST_PATH_IMAGE016
?；
E) obtain the feedback data of the tension detecting apparatus between
Figure 729339DEST_PATH_IMAGE001
individual wire drawing unit and
Figure 592253DEST_PATH_IMAGE002
individual wire drawing unit, and according to feedback data to step D) output frequency
Figure 816561DEST_PATH_IMAGE003
that draws finely tunes;
F) according to step e) the final output frequency that draws is transferred to
Figure 314276DEST_PATH_IMAGE002
individual motor;
The output frequency of the frequency converter of first wire drawing unit
Figure 536310DEST_PATH_IMAGE017
is the rated frequency of first motor.
Wherein, the span of said fine setting correction factor
Figure 948837DEST_PATH_IMAGE004
is 0.99～1.01.
Wherein, Said step K) in; If by the overtension of wiredrawing wire rod; Then frequency converter carries out the negative-feedback fine setting, to reduce output frequency ; If it is too small by the tension force of wiredrawing wire rod; Then frequency converter is just being presented fine setting, to improve output frequency
Figure 96101DEST_PATH_IMAGE003
; If by the tension force of wiredrawing wire rod in tolerance band; Then frequency converter is not finely tuned, and directly output frequency
Figure 223457DEST_PATH_IMAGE003
is transferred to motor.
Wherein, said tension detecting apparatus comprises cylinder, and said displacement transducer is connected with cylinder, and the lower end of cylinder is provided with roller.
Wherein, said frequency converter comprises rectifier bridge, inverter bridge, intermediate dc circuit, pre-charge circuit, control circuit and drive circuit.
Beneficial effect of the present invention is:
The invention provides a kind of straight wire drawing machine system, the rule of wire drawing is finished formula be placed on frequency converter inside, only need in frequency converter, import corresponding data and get final product; The programming and the calculating that have saved PLC; Complicated calculating is accomplished by frequency converter, has saved touch-screen, has reduced production cost.During debugging, the acceleration of the frequency converter of some wire drawings unit or slow down after, other each wire drawing unit frequency converter is also regulated thereupon, thereby makes the wire drawing machine system Total tune, like this with the debugging job simplification of complicacy.In addition, but common electrician presses just debugging machine of frequency converter specification, and practicality is very strong, for the development of wire drawing special converter has indicated direction, applies laying the foundation for the low cost of straight drawing machine.The programming of a kind of straight wire drawing machine system according to the invention is simple, the program versatility high, program is deposited in frequency converter after, simplified the PLC programming and the debugging work of wire drawing machine greatly, practical.
Description of drawings
Fig. 1 is a major loop electrical principle sketch map of the present invention;
Fig. 2 is the logic theory block diagram of the frequency converter computing of second wire drawing unit according to the invention;
Figure 3 is the invention of the first
Figure 559498DEST_PATH_IMAGE001
a drawing unit and the first
Figure 125609DEST_PATH_IMAGE002
a drawing unit arithmetic logic inverter block diagram;
Fig. 4 is total correction factor computing unit sketch map of the present invention;
Fig. 5 is an Electrified Transmission control sketch map of the present invention;
Fig. 6 is that PLC according to the invention connects sketch map;
Fig. 7 is the structural representation of tension detecting apparatus according to the invention.
The specific embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing the present invention is further described, the content that embodiment is mentioned not is to qualification of the present invention.
Shown in accompanying drawing 1 to 7; A kind of straight wire drawing machine system comprises PLC, two or more wire drawings unit, and the wire drawing unit comprises frequency converter, motor, transmission device and line tube; Be provided with tension detecting apparatus between the two adjacent wire drawing unit, the control method of said frequency converter comprises:
If is the arrangement sequence number of wire drawing unit; is the non-zero natural number, and the output frequency of
Figure 50337DEST_PATH_IMAGE002
individual wire drawing unit frequency converter calculates and comprises;
A) for fine-tuning the correction coefficient
Figure 248417DEST_PATH_IMAGE004
of data, the first
Figure 481690DEST_PATH_IMAGE001
a drawing unit motor rated speed
Figure 90526DEST_PATH_IMAGE005
data transmission ratio
Figure 201701DEST_PATH_IMAGE006
data, spool diameter
Figure 150066DEST_PATH_IMAGE007
data, stencil aperture
Figure 118022DEST_PATH_IMAGE008
of data, the first
Figure 151837DEST_PATH_IMAGE002
a drawing unit motor rated speed data transmission ratio
Figure 164847DEST_PATH_IMAGE010
The data, the spool diameter
Figure 241387DEST_PATH_IMAGE011
data, stencil aperture
Figure 824815DEST_PATH_IMAGE012
data transmission ratio
Figure 12214DEST_PATH_IMAGE010
for the first a drawing unit motor and spool speed ratio;
B) calculate total correction factor
Figure 751872DEST_PATH_IMAGE013
of
Figure 244929DEST_PATH_IMAGE002
individual wire drawing unit, its computing formula is:
Figure 805279DEST_PATH_IMAGE014
；
C) Get first
Figure 582742DEST_PATH_IMAGE001
a drawing unit inverter output frequency ;
D) calculate the output frequency
Figure 88306DEST_PATH_IMAGE003
of the frequency converter of
Figure 293526DEST_PATH_IMAGE002
individual wire drawing unit; Total correction factor
Figure 870372DEST_PATH_IMAGE013
of said individual wire drawing unit is the frequency converter output frequency
Figure 248581DEST_PATH_IMAGE003
of
Figure 853372DEST_PATH_IMAGE002
individual wire drawing unit and the ratio of the frequency converter output frequency
Figure 760782DEST_PATH_IMAGE015
of
Figure 735057DEST_PATH_IMAGE001
individual wire drawing unit, and its computing formula is:
Figure 27815DEST_PATH_IMAGE016
?；
E) obtain the feedback data of the tension detecting apparatus between
Figure 662934DEST_PATH_IMAGE001
individual wire drawing unit and
Figure 66233DEST_PATH_IMAGE002
individual wire drawing unit, and according to feedback data to step D) output frequency
Figure 262859DEST_PATH_IMAGE003
that draws finely tunes;
F) according to step e) the final output frequency that draws is transferred to
Figure 954872DEST_PATH_IMAGE002
individual motor; Thereby control the rotating speed of
Figure 691884DEST_PATH_IMAGE002
individual wire drawing unit motor;
The output frequency of the frequency converter of first wire drawing unit is the rated frequency of first motor.
Operation principle is following:
The output frequency of first wire drawing unit frequency converter
Figure 582796DEST_PATH_IMAGE017
is the rated frequency of motor, need not to carry out sequential operation.
Draw final output frequency after second wire drawing unit frequency converter carries out automatic computing and debug according to above-mentioned control method, realize that its concrete steps comprise to the automatic control of the motor of second wire drawing unit;
A) obtain the data of finely tuning correction factor
Figure 995061DEST_PATH_IMAGE004
; Obtain the data of the motor rated speed
Figure 473447DEST_PATH_IMAGE018
of first wire drawing unit, the data of gearratio
Figure 116918DEST_PATH_IMAGE019
, the data of line tube diameter , the data of mould aperture
Figure 118689DEST_PATH_IMAGE021
, obtain the data of the motor rated speed of second wire drawing unit, the data of gearratio
Figure 92820DEST_PATH_IMAGE023
, the data of line tube diameter
Figure 598887DEST_PATH_IMAGE024
, the data of mould aperture
Figure 752788DEST_PATH_IMAGE025
;
B) calculate total correction factor
Figure 572977DEST_PATH_IMAGE026
of second wire drawing unit, its computing formula is:
Figure 925461DEST_PATH_IMAGE027
；
C) obtain the output frequency
Figure 805692DEST_PATH_IMAGE017
of the frequency converter of first wire drawing unit;
D) calculate the output frequency
Figure 243626DEST_PATH_IMAGE028
of the frequency converter of second wire drawing unit; Total correction factor of said second wire drawing unit
Figure 100462DEST_PATH_IMAGE029
is the frequency converter output frequency of second wire drawing unit and the ratio of the frequency converter output frequency
Figure 358585DEST_PATH_IMAGE017
of first wire drawing unit, and its computing formula is:
Figure 221499DEST_PATH_IMAGE030
；
E) obtain the feedback data of the tension detecting apparatus between first wire drawing unit and second the wire drawing unit, and according to feedback data to step D) output frequency
Figure 445807DEST_PATH_IMAGE028
that draws finely tunes;
F) according to step e) the final output frequency that draws is transferred to second motor, and then controls the motor speed of second wire drawing unit automatically.
In like manner:
Figure 710566DEST_PATH_IMAGE002
individual wire drawing unit frequency converter draws final output frequency after carrying out automatic computing and debug according to above-mentioned control method; Realization is to the automatic control of the motor of
Figure 431135DEST_PATH_IMAGE002
individual wire drawing unit, and its concrete steps comprise;
If
Figure 843662DEST_PATH_IMAGE001
is the arrangement sequence number of wire drawing unit;
Figure 543764DEST_PATH_IMAGE001
is the non-zero natural number, and the output frequency
Figure 118282DEST_PATH_IMAGE003
of
Figure 663030DEST_PATH_IMAGE002
individual wire drawing unit frequency converter calculates and comprises;
G) for fine-tuning the correction coefficient
Figure 955788DEST_PATH_IMAGE004
of data, the first
Figure 521899DEST_PATH_IMAGE001
a drawing unit motor rated speed
Figure 994206DEST_PATH_IMAGE005
data transmission ratio
Figure 558043DEST_PATH_IMAGE006
data, spool diameter
Figure 945162DEST_PATH_IMAGE007
data, stencil aperture
Figure 987067DEST_PATH_IMAGE008
of data, the first
Figure 80925DEST_PATH_IMAGE002
a drawing unit rated motor speed
Figure 877980DEST_PATH_IMAGE009
data transmission ratio
Figure 923034DEST_PATH_IMAGE010
The data, the spool diameter
Figure 34209DEST_PATH_IMAGE011
data, stencil aperture
Figure 44891DEST_PATH_IMAGE012
data;
H) calculate total correction factor of
Figure 950530DEST_PATH_IMAGE002
individual wire drawing unit, its computing formula is:
Figure 430370DEST_PATH_IMAGE014
；
I) to obtain first
Figure 997355DEST_PATH_IMAGE001
a drawing unit inverter output frequency ;
J) calculate the output frequency of the frequency converter of
Figure 657323DEST_PATH_IMAGE002
individual wire drawing unit; Total correction factor
Figure 77438DEST_PATH_IMAGE013
of said
Figure 829996DEST_PATH_IMAGE002
individual wire drawing unit is the frequency converter output frequency of
Figure 148162DEST_PATH_IMAGE002
individual wire drawing unit and the ratio of the frequency converter output frequency
Figure 895910DEST_PATH_IMAGE015
of individual wire drawing unit, and its computing formula is:
Figure 126034DEST_PATH_IMAGE016
?；
K) obtain the feedback data of the tension detecting apparatus between individual wire drawing unit and
Figure 615101DEST_PATH_IMAGE002
individual wire drawing unit, and according to feedback data to step J) output frequency
Figure 702881DEST_PATH_IMAGE003
that draws finely tunes;
L) according to step K) the final output frequency that draws is transferred to individual motor.
When second wire drawing unit debugged, because program has been deposited in frequency converter inside; Before carrying out Wire Drawing; Motor rated speed
Figure 567565DEST_PATH_IMAGE018
, gearratio
Figure 655607DEST_PATH_IMAGE019
, line tube diameter
Figure 860323DEST_PATH_IMAGE020
, mould aperture
Figure 793644DEST_PATH_IMAGE021
, the motor rated speed
Figure 898741DEST_PATH_IMAGE022
of second wire drawing unit, gearratio
Figure 95368DEST_PATH_IMAGE023
, line tube diameter
Figure 584118DEST_PATH_IMAGE024
, mould aperture that only needs finely tune correction factor
Figure 81089DEST_PATH_IMAGE004
, first wire drawing unit Shu Rued the frequency converter of second wire drawing unit; Automatically after obtaining the output frequency
Figure 47777DEST_PATH_IMAGE017
of the frequency converter of first wire drawing unit; Frequency converter through second wire drawing unit calculates, and obtains output frequency ; Again according to step e) the final output frequency that draws is transferred to motor, to realize control to the motor speed of second wire drawing unit.
When to when individual wire drawing unit is debugged; Because program has been deposited in frequency converter inside; Before carrying out Wire Drawing; Motor rated speed , gearratio , line tube diameter
Figure 967695DEST_PATH_IMAGE007
, the motor rated speed
Figure 561859DEST_PATH_IMAGE009
of mould aperture
Figure 465672DEST_PATH_IMAGE008
and
Figure 407958DEST_PATH_IMAGE002
individual wire drawing unit (being current wire drawing unit), gearratio
Figure 444364DEST_PATH_IMAGE010
, line tube diameter
Figure 734531DEST_PATH_IMAGE011
, mould aperture
Figure 411500DEST_PATH_IMAGE031
that only needs finely tune correction factor
Figure 368272DEST_PATH_IMAGE004
,
Figure 683847DEST_PATH_IMAGE001
individual wire drawing unit (promptly going up a wire drawing unit) generaled the frequency converter of
Figure 787118DEST_PATH_IMAGE002
individual wire drawing unit; After the frequency converter of
Figure 909532DEST_PATH_IMAGE002
individual wire drawing unit obtains the output frequency
Figure 167655DEST_PATH_IMAGE017
of frequency converter of
Figure 116523DEST_PATH_IMAGE001
individual wire drawing unit automatically; Frequency converter through
Figure 92886DEST_PATH_IMAGE002
individual wire drawing unit calculates, and obtains output frequency
Figure 254877DEST_PATH_IMAGE003
; The frequency converter of
Figure 519636DEST_PATH_IMAGE002
individual wire drawing unit is according to step K) the final output frequency that draws is transferred to motor, realizes the rotating speed control to
Figure 803987DEST_PATH_IMAGE002
individual wire drawing unit motor.
The invention provides a kind of straight wire drawing machine system, the rule of wire drawing is finished formula be placed on frequency converter inside, need in frequency converter, import corresponding data and get final product; The programming and the calculating that have saved PLC; Complicated calculating is accomplished by frequency converter, has saved touch-screen, has reduced production cost.During debugging, the acceleration of the frequency converter of some wire drawings unit or slow down after, other each wire drawing unit frequency converter is also regulated thereupon, thereby makes the wire drawing machine system Total tune, like this with the debugging job simplification of complicacy.In addition, but common electrician presses just debugging machine of frequency converter specification, and practicality is very strong, for the development of wire drawing special converter has indicated direction, applies laying the foundation for the low cost of straight drawing machine.The programming of a kind of straight wire drawing machine system according to the invention is simple, the program versatility high, program is deposited in frequency converter after, simplified the debugging work of the PLC of wire drawing machine greatly, practical.
The span of the said fine setting correction factor of present embodiment
Figure 387153DEST_PATH_IMAGE004
is 0.99～1.01; Be used for the result of calculation of frequency converter is finely tuned; To reduce because the error that produces in the sum of errors computational process of input value, thereby improve the crudy of wire drawing machine.
Said step K) in; If by the overtension of wiredrawing wire rod; Then frequency converter carries out the negative-feedback fine setting; To reduce output frequency
Figure 352835DEST_PATH_IMAGE003
, prevent that wire rod from being broken and influence ordinary production; If it is too small by the tension force of wiredrawing wire rod; Then frequency converter is just being presented fine setting; To improve output frequency
Figure 534418DEST_PATH_IMAGE003
, avoid wire rod accumulation or wire rod to be processed by drawing; If by the tension force of wiredrawing wire rod in tolerance band; Then frequency converter is not finely tuned; Directly output frequency
Figure 927353DEST_PATH_IMAGE003
is transferred to motor; Under the prerequisite of guaranteeing the wire drawing quality, guarantee the normal operation of straight drawing machine.
The said tension detecting apparatus of present embodiment comprises cylinder 1, and said displacement transducer is connected with cylinder 1, and the lower end of cylinder 1 is provided with roller 2.Contacted with roller 2 by wiredrawing wire rod, when being changed by wiredrawing wire rod tension force, the displacement of roller 2 also changes thereupon; The stroke of cylinder 1 changes with the variation of roller 2 displacements; Displacement transducer is used to detect the variation of roller 2 displacements, if when being exceeded the tolerance band of setting by the tension force of wiredrawing wire rod, the displacement of roller 2 will be will exceed the tolerance band of setting; Displacement transducer sends this information to be electrically connected with it frequency converter, thereby realizes the function of its feedback information.The present invention adopts the tension detecting apparatus of band displacement transducer, and appearance and size is littler, has reduced taking up room of straight drawing machine greatly, has improved the space availability ratio of factory building.
The said frequency converter of present embodiment comprises rectifier bridge, inverter bridge, intermediate dc circuit, pre-charge circuit, control circuit and drive circuit, and frequency converter adopts general frequency converter on the market, obtains the frequency converter ratio that has above-mentioned functions and is easier to realize.
Owing to kept interlock and other corresponding logical relation of startup that PLC realizes each wire drawing unit, parking, crawl, whole straight wire drawing machine system; Can realize the crawl of each wire drawing unit, the crawl of wire drawing unit, front easily, demand of practical production is satisfied in the crawl of wire drawing unit, back and the interlock of whole wire drawings unit.
By always stopping, frequency converter is freely shut down during shutdown; Admission machine aerodynamic brake, admission machine are existing trunk admission machine on the market.
The foregoing description is one of preferable implementation of the present invention, and in addition, the present invention can also realize by alternate manner that any conspicuous replacement is all within protection scope of the present invention under the prerequisite that does not break away from the present invention's design.

Claims (5)

1. straight wire drawing machine system; Comprise PLC, two or more wire drawings unit; The wire drawing unit comprises frequency converter, motor, transmission device and line tube, is provided with tension detecting apparatus between the two adjacent wire drawing unit, and it is characterized in that: the control method of said frequency converter comprises:
If is the arrangement sequence number of wire drawing unit;
Figure 663518DEST_PATH_IMAGE001
is the non-zero natural number, and the output frequency
Figure 593613DEST_PATH_IMAGE003
of individual wire drawing unit frequency converter calculates and comprises;
A) obtain the data of finely tuning correction factor ; Obtain the data of the motor rated speed
Figure 85009DEST_PATH_IMAGE005
of
Figure 652891DEST_PATH_IMAGE001
individual wire drawing unit, the data of gearratio
Figure 975605DEST_PATH_IMAGE006
, the data of line tube diameter
Figure 648026DEST_PATH_IMAGE007
, the data of mould aperture , obtain the data of the motor rated speed
Figure 814937DEST_PATH_IMAGE009
of
Figure 741939DEST_PATH_IMAGE002
individual wire drawing unit, the data of gearratio
Figure 782893DEST_PATH_IMAGE010
, the data of line tube diameter
Figure 692074DEST_PATH_IMAGE011
, the data of mould aperture
Figure 465995DEST_PATH_IMAGE012
;
B) calculate total correction factor
Figure 781625DEST_PATH_IMAGE013
of
Figure 331183DEST_PATH_IMAGE002
individual wire drawing unit, its computing formula is:
Figure 427370DEST_PATH_IMAGE014
；
C) Get first
Figure 677085DEST_PATH_IMAGE001
a drawing unit inverter output frequency
Figure 475408DEST_PATH_IMAGE015
;
D) calculate the output frequency
Figure 918208DEST_PATH_IMAGE003
of the frequency converter of
Figure 785167DEST_PATH_IMAGE002
individual wire drawing unit; Total correction factor
Figure 122979DEST_PATH_IMAGE013
of said
Figure 283199DEST_PATH_IMAGE002
individual wire drawing unit is the frequency converter output frequency
Figure 771446DEST_PATH_IMAGE003
of
Figure 479005DEST_PATH_IMAGE002
individual wire drawing unit and the ratio of the frequency converter output frequency
Figure 696732DEST_PATH_IMAGE015
of
Figure 690861DEST_PATH_IMAGE001
individual wire drawing unit, and output frequency
Figure 348293DEST_PATH_IMAGE003
computing formula is:
?；
E) obtain the feedback data of the tension detecting apparatus between
Figure 664185DEST_PATH_IMAGE001
individual wire drawing unit and
Figure 212978DEST_PATH_IMAGE002
individual wire drawing unit, and according to feedback data to step D) output frequency that draws finely tunes;
F) according to step e) the final output frequency that draws is transferred to individual motor;
Wherein, the output frequency of the frequency converter of first wire drawing unit
Figure 140854DEST_PATH_IMAGE017
is the rated frequency of first motor.
2. a kind of straight wire drawing machine system according to claim 1 is characterized in that: the span of said fine setting correction factor
Figure 606471DEST_PATH_IMAGE004
is 0.99～1.01.
3. a kind of straight wire drawing machine system according to claim 1; It is characterized in that: the process of finely tuning said step e) comprises: if by the overtension of wiredrawing wire rod; Then frequency converter obtains the negative factor certificate; Carry out the negative-feedback fine setting, to reduce output frequency
Figure 865414DEST_PATH_IMAGE003
; If it is too small by the tension force of wiredrawing wire rod; Then frequency converter obtains the positive feedback data; Carry out the positive feedback fine setting, to improve output frequency
Figure 432792DEST_PATH_IMAGE003
; If in tolerance band, then frequency converter is not finely tuned by the tension force of wiredrawing wire rod.
4. a kind of straight wire drawing machine system according to claim 3 is characterized in that: said tension detecting apparatus comprises cylinder (1) and displacement transducer, and said displacement transducer is connected with cylinder (1), and the lower end of cylinder (1) is provided with roller (2).
5. a kind of straight wire drawing machine system according to claim 1 is characterized in that: said frequency converter comprises rectifier bridge, inverter bridge, intermediate dc circuit, pre-charge circuit, control circuit and drive circuit.
CN2010101765996A 2010-05-12 2010-05-12 Straight wire drawing machine system Expired - Fee Related CN101850371B (en)

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CN2010101765996A CN101850371B (en) 2010-05-12 2010-05-12 Straight wire drawing machine system

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CN101850371B true CN101850371B (en) 2012-03-07

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Publication number Priority date Publication date Assignee Title
CN102107226B (en) * 2010-12-24 2012-07-11 玉溪玉杯金属制品有限公司 Metal wire tension detection and control device in straight line wire drawing machine
CN105562443A (en) * 2014-11-10 2016-05-11 合肥神马科技集团有限公司 Drawbench and adjusting and detecting method for tension feedback system thereof
CN104525592B (en) * 2014-12-04 2016-08-17 武汉同力机电有限公司 Without the tuning straight wire drawing machine of roller, electrical system and tension force computational methods

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