CN103331395A - Control method of twist start of steel cord - Google Patents
Control method of twist start of steel cord Download PDFInfo
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- CN103331395A CN103331395A CN2013102055926A CN201310205592A CN103331395A CN 103331395 A CN103331395 A CN 103331395A CN 2013102055926 A CN2013102055926 A CN 2013102055926A CN 201310205592 A CN201310205592 A CN 201310205592A CN 103331395 A CN103331395 A CN 103331395A
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- steel cord
- rotating speed
- false twist
- twist device
- cord
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Abstract
The invention discloses a control method of twist start of a steel cord. The method comprises the steps of adjusting rotating speed of a false twister according to a false twister rotating speed rise standard curve preset in a control system, further slightly adjusting the rotating speed of the false twister according to change in a steel cord twist value detected in real time till twist of each point on the steel cord meet the requirements, wherein the false twister rotating speed rise standard curve is formed by repeatedly starting steel cord production equipment for many times, sampling a plurality of sampling points in the same position on the steel cord, correcting the rotating speed of the false twister at the same sampling point on the steel cord according to a formula, and drawing corresponding to take-up meter length according to the corrected rotating speeds of the false twister at the sampling points. According to the control method, the standard curve is established to allow the rotating speed of the false twister during the start is matched with the speed of a host, so that the twist value of the cord is controlled during the start. According to the control method, the mechanical structure of the original equipment is not require, and the quality of the steel cord can be improved significantly.
Description
Technical field
The present invention relates to steel cord production technical field, refer to that particularly a kind of steel cord starts the control method of reversing.
Background technology
The steel cord is made up of two or two above steel wires, perhaps by thigh with strand combination or by the combination formed structure of thigh with silk.The steel cord (being generally 6m) of specific length, when the one end is fixed, when the other end was let alone to rotate freely, the revolution that rotates was referred to as the Residual torsion value of this section steel cord.Steel cord Residual torsion value (hereinafter to be referred as reversing) is very important technological parameter during the steel cord is produced.
Each section that the steel cord is completely taken turns in steel cord production requirement one reverses must be within certain scope.In put outer receipts type plying equipment and influence principal element that cord reverses the rotating ratio of false twist device and main frame, swage volume under pressure, tension force size, monofilament circle footpath etc. are arranged, but for a certain device start finish, after the stabilization of speed, factors such as swage volume under pressure, tension force size, monofilament circle footpath are almost constant, torsion effect is changed very little, the false twist device that only need search out a best and engine speed are than just guaranteeing that the cord of producing reverses in the scope that is stabilized in requirement.In the prior art, China's utility model patent " the residual on-line measuring device of turning round of cord " (application number: this process has been made detailed description 200920227558.8), its cardinal principle is: detect reversing of steel cord by reversing on-line measuring device, constantly adjust the rotating speed (rotating ratio of false twist device and main frame) of false twist device, until reversing in the scope that is requiring.But in actual production, point on the steel cord after reversing by the false twist device still needs to arrive through tens meters ability and reverses checkout gear, therefore checkout gear has certain hysteresis quality, yet in the device start process, main frame speed rises in time, detect reverse after, main frame speed raises, do not existed adjustment with reference to speed.The uncontrollable device start stage of mode of this so " detect afterwards earlier adjust ", i.e. main frame and false twist device rotating speed reversing from the cord of producing in 0 to stabilized (steady-state) speed stage.
Summary of the invention
The objective of the invention is to overcome that the cord to the device start stage reverses uncontrollable defective in the existing steel cord production, provide a kind of steel cord to start the control method of reversing.
For achieving the above object, the designed steel cord of the present invention starts the control method of reversing, and comprises the steps:
1) steel cord production equipment is set, it comprises residual checkout gear, the take-up pulley turned round of the false twist device, the cord that arrange in proper order according to the steel cord direction of motion, described take-up pulley place is provided with meter counter, and described false twist device, residual checkout gear, the meter counter turned round of cord all link to each other with control system;
2) start steel cord production equipment, adjust the rotating speed of false twist device according to predefined false twist device rotating speed rising calibration curve in the control system, and simultaneously according to the residual variation of turning round the detected steel cord of the checkout gear value of reversing of cord, further finely tune the rotating speed of false twist device, reversing of each point meets the requirements on the steel cord;
Wherein, the acquisition methods of described false twist device rotating speed rising calibration curve is as follows:
(1) every constant spacing, the residual rotating speed of turning round the detected steel cord of the checkout gear value of reversing and false twist device of cord is sampled,
(2) repeated priming steel cord production equipment is repeatedly sampled to the sampled point of a plurality of same positions on the steel cord, and according to following formula, the same sampled point on the steel wire is carried out the rotating speed correction of false twist device,
V
N+1=V
n+ k(A
n-A
If)
In the formula, V
nThe rotating speed of the false twist device of sample point when being the n time startup steel cord production equipment, V
N+1The rotating speed of the false twist device of sample point when being the n+1 time startup steel cord production equipment, A
IfBe default value of reversing that the steel cord need reach, A
nValue of reversing of sample point when being the n time startup steel cord production equipment, k is that false twist device rotating speed is adjusted coefficient,
(3) according to the rotating speed of the false twist device of above-mentioned a plurality of sample point corrections, the long L of take-up rice of corresponding meter counter record carries out curve and draws, and obtains false twist device rotating speed rising calibration curve;
As preferred version, above-mentioned steel cord starts in the control method of reversing, the definite method that obtains the described false twist device of step (2) the rotating speed adjustment coefficient k of false twist device rotating speed rising calibration curve is: at first, adjust coefficient according to the default false twist device rotating speed less than end value of experience and be designated as b, along with starting steel cord production equipment one by one, continue to increase the b value, and monitoring A
nWith A
IfBetween difference, when concussion and amplitude occurring and surpass the steel cord and reverse the error range that allows, the false twist device rotating speed of noting this moment is adjusted coefficient and is designated as b ', determines k=(0.6 ~ 0.8 then) b '.
As preferred version, above-mentioned steel cord starts in the control method of reversing, and the described constant spacing of step (1) that obtains false twist device rotating speed rising calibration curve is the distance between the residual test point of turning round checkout gear of false twist device outlet and cord.
Beneficial effect of the present invention: utilization is set up in control system and is continued to optimize false twist device rotating speed rising calibration curve in the start-up course, makes false twist device rotating speed and main frame speeds match in the start-up course, thus value of reversing of cord in the control start-up course.The present invention does not need to change the frame for movement of existing equipment, can significantly improve steel cord quality.
Description of drawings
Fig. 1 is the structural representation of the steel cord production equipment of enforcement the inventive method.
Fig. 2 is false twist device rotating speed rising calibration curve schematic diagram.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, 2, the steel cord starts the control method of reversing, and comprises the steps:
1) steel cord production equipment is set, it comprises residual checkout gear 2, the take-up pulley 3 turned round of the false twist device 1, the cord that arrange in proper order according to the steel cord direction of motion, described take-up pulley 3 places are provided with meter counter 4, and described false twist device 1, cord be residual turns round checkout gear 2, meter counter 4 all links to each other with control system;
2) start steel cord production equipment, adjust the rotating speed of false twist device 1 according to predefined false twist device rotating speed rising calibration curve in the control system, and simultaneously according to the residual variation of turning round checkout gear 2 detected steel cord values of reversing of cord, further finely tune the rotating speed of false twist device 1, reversing of each point meets the requirements on the steel cord;
Wherein, the acquisition methods of described false twist device rotating speed rising calibration curve is as follows:
(1) distance of establishing between the residual test point of turning round checkout gear 2 of false twist device 1 outlet and cord is L
0, with L
0Reverse the sampling period as cord, every L
0, the residual rotating speed of turning round checkout gear 2 detected steel cord values of reversing and false twist device 1 of cord is sampled,
(2) repeated priming steel cord production equipment is repeatedly sampled to the sampled point of a plurality of same positions on the steel cord, and according to following formula, the same sampled point on the steel cord is carried out the rotating speed correction of false twist device 1,
V
N+1=V
n+ k(A
n-A
If)
In the formula, V
nThe rotating speed of the false twist device 1 of sample point when being the n time startup steel cord production equipment, V
N+1The rotating speed of the false twist device 1 of sample point when being the n+1 time startup steel cord production equipment, A
IfBe default value of reversing that the steel cord need reach, A
nValue of reversing of sample point when being the n time startup steel cord production equipment, k is that false twist device rotating speed is adjusted coefficient,
Device start moment, false twist device rotating speed V=0, take-up rice is long to be 0, the value of reversing is A
0, corresponding length is L
0
For same sampled point on the steel cord,
Start for the 1st time, the false twist device rotating speed that records this sampled point is V
1, metering length is L
1, the steel cord value of reversing is A
1, the extension position of this sampled point on the actual corresponding steel cord is L
1+ L
0, this sampled point is through the rotating speed V of the device of false twist next time 1 of correction so
2=V
1+ k(A
1-A
If)
After starting for the 2nd time, when metering length is L
1The time, the rotating speed of false twist device is revised speed V
2, detecting metering length again is L
1+ L
0The time steel cord reverse A
2, according to A
2-A
IfThe torsional deflection value, obtain the rotating speed V of false twist device 1 next time
3,
Repeating above-mentioned makeover process, is 0 until this sampled point torsional deflection value, and namely this point reverses to equal to set and reverses.
(3) according to the rotating speed of the false twist device 1 of above-mentioned a plurality of sample point corrections, the long L of take-up rice of corresponding meter counter (4) record carries out curve and draws, and obtains false twist device rotating speed rising calibration curve, as shown in Figure 2, and V
nThe block curve at place is the n time startup false twist device rotating speed rising calibration curve, V
N+1The dashed curve at place is the n+1 time startup false twist device rotating speed rising calibration curve, each curve of all last time being drawn that starts is revised, torsional deflection value until each sampled point is 0, obtains the false twist device rotating speed rising calibration curve that more realistic production needs;
In the acquisition methods of described false twist device rotating speed rising calibration curve, definite method that the described false twist device of step (2) rotating speed is adjusted coefficient k is: at first, adjust coefficient according to the default false twist device rotating speed less than end value of experience and be designated as b, along with starting steel cord production equipment one by one, continue to increase the b value, and monitoring A
nWith A
IfBetween difference, when concussion and amplitude occurring and surpass the steel cord and reverse the error range that allows, the false twist device rotating speed of noting this moment is adjusted coefficient and is designated as b ', determines k=(0.6 ~ 0.8 then) b '.
Acquisition methods general device according to above-mentioned false twist device rotating speed rising calibration curve only need start about 3 times, just can obtain better suited false twist device rotating speed rising calibration curve, satisfies the steel cord substantially and reverses requirement, has reduced scrappage and the production cost of finished product.
Claims (3)
1. a steel cord starts the control method of reversing, and comprises the steps:
1) steel cord production equipment is set, it comprises residual checkout gear (2), the take-up pulley (3) turned round of the false twist device (1), the cord that arrange in proper order according to the steel cord direction of motion, described take-up pulley (3) locates to be provided with meter counter (4), and described false twist device (1), cord be residual turns round checkout gear (2), meter counter (4) all links to each other with control system;
2) start steel cord production equipment, adjust the rotating speed of false twist device (1) according to predefined false twist device rotating speed rising calibration curve in the control system, and simultaneously according to the residual variation of turning round the detected steel cord of checkout gear (2) value of reversing of cord, further finely tune the rotating speed of false twist device (1), reversing of each point meets the requirements on the steel cord;
Wherein, the acquisition methods of described false twist device rotating speed rising calibration curve is as follows:
(1) every constant spacing, the residual rotating speed of turning round the detected steel cord of checkout gear (2) value of reversing and false twist device (1) of cord is sampled,
(2) repeated priming steel cord production equipment is repeatedly sampled to the sampled point of a plurality of same positions on the steel cord, and according to following formula, the same sampled point on the steel cord is carried out the rotating speed correction of false twist device (1),
V
N+1=V
n+ k(A
n-A
If)
In the formula, V
nThe rotating speed of the false twist device (1) of sample point when being the n time startup steel cord production equipment, V
N+1The rotating speed of the false twist device (1) of sample point when being the n+1 time startup steel cord production equipment, A
IfBe default value of reversing that the steel cord need reach, A
nValue of reversing of sample point when being the n time startup steel cord production equipment, k is that false twist device rotating speed is adjusted coefficient,
(3) according to the rotating speed of the false twist device (1) of above-mentioned a plurality of sample point corrections, the long L of take-up rice of corresponding meter counter (4) record carries out curve and draws, and obtains false twist device rotating speed rising calibration curve.
2. steel cord according to claim 1 starts the control method of reversing, it is characterized in that: in the acquisition methods of described false twist device rotating speed rising calibration curve, definite method that the described false twist device of step (2) rotating speed is adjusted coefficient k is: at first, adjust coefficient according to the default false twist device rotating speed less than end value of experience and be designated as b, along with starting steel cord production equipment one by one, continue to increase the b value, and monitoring A
nWith A
IfBetween difference, when concussion and amplitude occurring and surpass the steel cord and reverse the error range that allows, the false twist device rotating speed of noting this moment is adjusted coefficient and is designated as b ', determines k=(0.6 ~ 0.8 then) b '.
3. steel cord according to claim 1 and 2 starts the control method of reversing, it is characterized in that: in the acquisition methods of described false twist device rotating speed rising calibration curve, the described constant spacing of step (1) is the distance between the residual test point of turning round checkout gear (2) of false twist device (1) outlet and cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310205592.6A CN103331395B (en) | 2013-05-29 | 2013-05-29 | Control method of twist start of steel cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310205592.6A CN103331395B (en) | 2013-05-29 | 2013-05-29 | Control method of twist start of steel cord |
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|---|---|
| CN103331395A true CN103331395A (en) | 2013-10-02 |
| CN103331395B CN103331395B (en) | 2015-03-18 |
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|---|---|---|---|
| CN201310205592.6A Active CN103331395B (en) | 2013-05-29 | 2013-05-29 | Control method of twist start of steel cord |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813711A (en) * | 2019-11-18 | 2021-05-18 | 宝钢金属有限公司 | Production method and device for accurately controlling torsional fluctuation of steel cord |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136534A (en) * | 1979-04-13 | 1980-10-24 | Tokyo Seikou Kk | Production of steel cord |
| JPH07218788A (en) * | 1994-02-04 | 1995-08-18 | Fujikura Ltd | Manufacture device for sz slot cable |
| JP2008304399A (en) * | 2007-06-08 | 2008-12-18 | Bridgestone Corp | Device for measuring residual torsion of stranded wire, and wire stranding machine and stranded wire winding machine using the device |
| CN201495446U (en) * | 2009-08-21 | 2010-06-02 | 国营江北机械厂 | On-line detecting device for cord residual twist |
| CN102039358A (en) * | 2009-10-09 | 2011-05-04 | 青岛三高自控设备研发有限公司 | Steel cord corrector |
| KR20120111889A (en) * | 2011-03-31 | 2012-10-11 | 미쓰비시덴키 가부시키가이샤 | Wire twisting machine |
-
2013
- 2013-05-29 CN CN201310205592.6A patent/CN103331395B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136534A (en) * | 1979-04-13 | 1980-10-24 | Tokyo Seikou Kk | Production of steel cord |
| JPH07218788A (en) * | 1994-02-04 | 1995-08-18 | Fujikura Ltd | Manufacture device for sz slot cable |
| JP2008304399A (en) * | 2007-06-08 | 2008-12-18 | Bridgestone Corp | Device for measuring residual torsion of stranded wire, and wire stranding machine and stranded wire winding machine using the device |
| CN201495446U (en) * | 2009-08-21 | 2010-06-02 | 国营江北机械厂 | On-line detecting device for cord residual twist |
| CN102039358A (en) * | 2009-10-09 | 2011-05-04 | 青岛三高自控设备研发有限公司 | Steel cord corrector |
| KR20120111889A (en) * | 2011-03-31 | 2012-10-11 | 미쓰비시덴키 가부시키가이샤 | Wire twisting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813711A (en) * | 2019-11-18 | 2021-05-18 | 宝钢金属有限公司 | Production method and device for accurately controlling torsional fluctuation of steel cord |
| CN112813711B (en) * | 2019-11-18 | 2022-12-16 | 宝钢金属有限公司 | Production method and device for accurately controlling torsion fluctuation of steel cord |
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| Publication number | Publication date |
|---|---|
| CN103331395B (en) | 2015-03-18 |
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