CN210150498U - Device for controlling take-up tension of stranding machine - Google Patents
Device for controlling take-up tension of stranding machine Download PDFInfo
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- CN210150498U CN210150498U CN201920823851.4U CN201920823851U CN210150498U CN 210150498 U CN210150498 U CN 210150498U CN 201920823851 U CN201920823851 U CN 201920823851U CN 210150498 U CN210150498 U CN 210150498U
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Abstract
The utility model provides a control stranding machine receives line tension's device, includes the traction wheel, crosses line wheel, take-up reel and power device and gear connecting shaft pole, and the stranded wire is in proper order through the traction wheel, cross the rolling of line wheel on the take-up reel, wherein: the take-up reel is connected with a power output end of the power device through the magnetic powder clutch and a gear connecting shaft rod, the human-computer interaction device, the programmable controller and the frequency converter are electrically connected through RS485 communication in sequence, and an AO output end of the frequency converter is electrically connected with the magnetic powder clutch. The utility model discloses receive the line operating mode according to the reality of take-up reel and adjust rolling tension, avoid in the conventional art through the sensor control take-up reel parameter and adjust the defect that tension brought, guarantee the tensile stability of rolling, and then control each item performance by the cable of stranded wire rolling.
Description
Technical Field
The invention relates to the field of stranding machines, in particular to a device for controlling take-up tension of a stranding machine.
Background
The stranding machine that current cable manufacturing enterprise used mostly relies on the elasticity of manual adjustment drawing drum brake belt to adjust the tensile traditional stranded conductor production control mode of unwrapping wire. In production, an operator is difficult to master the tension on each stranded wire core on the rotating stranding machine and to perform balanced adjustment on the stranded wires. As a result, the tension of each stranded wire core of the produced stranded wire is not uniform, and even the problem of core breaking occurs in the production process. The cable with uneven core twisting tension has poor torsion resistance, and the core with larger twisting tension bears larger mechanical strength in the use process, so the core is easy to break. Such cable quality problems are evident in many special-purpose cables that require twisting, coiling and bending, such as wind energy cables, cables for lifting machinery, etc.
However, in order to solve the above problems, the prior art discloses a technical scheme for acquiring real-time tension by a monitoring method, in which a plurality of sensors are added near a take-up reel to acquire a real-time state of take-up, parameters of the real-time state are calculated by a programmable controller, and then torque of a control clutch is output to control the tension.
Because the tension during stranding plays a crucial role in various performances of the cable, including performances such as torsion resistance or mechanical strength, the technical scheme obtains the tension through the sensor and then calculates and feeds back the tension, and even if the time-millisecond hysteresis exists, the correspondingly matched tension is not the tension required by an instant take-up reel, and the tension has a large influence on various performances of the cable.
And the control tension acquired by the scheme in the prior art is influenced by the length of the stranded wire, the difference between the actual instantaneous tension required by the take-up reel and the actual instantaneous tension at a certain moment when the length of the stranded wire is longer is larger, the difference between the tension acquired by the scheme in the prior art and the actual instantaneous tension required by the take-up reel is not constant and is increased along with the longer length of the stranded wire, so that the performance difference between the front section and the rear section of the cable is caused, and the performance difference is larger along with the longer two points compared.
And then the corresponding real-time take-up reel disc diameter, tension measured by the guide wheel contacting with the stranded wire core and the like are obtained through the sensor in the prior art, the larger the deviation of the accuracy of the stranded wire is along with the longer the stranded wire length is, the larger the deviation of the initial data obtained for calculating the real-time tension is, the more the take-up tension output to the take-up reel deviates from the actually required tension, and various performances of the cable product are uneven and even the cable product is broken.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a device for controlling the take-up tension of a stranding machine.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method of controlling take-up tension of a wire strander, comprising:
inputting preset initial parameters on an interface of a human-computer interaction device, obtaining instant parameters from the preset initial parameters through a programmable controller, writing the instant parameters into a frequency converter through RS485 communication to obtain an analog quantity of a voltage signal of 0-10V, outputting an adjusting voltage for controlling the torque of a magnetic powder clutch through an AO output end of the frequency converter, obtaining an instant moment through the magnetic powder clutch along with the change of the adjusting voltage, and connecting the output end of the magnetic powder clutch with a take-up reel and controlling the take-up tension of the take-up reel;
which comprises the following steps:
1) the method comprises the steps of obtaining a plurality of initial parameters input by a human-computer interaction interface, wherein the plurality of initial parameters comprise a single branch diameter M, a strand number S, an empty disc diameter R, a disc width L and an initial tension T, the single branch diameter is the diameter of one branch in a stranded wire, the strand number is the number of the single branch in the stranded wire, the empty disc diameter is the diameter of an initial empty disc when the stranded wire is not wound in a take-up disc, and the disc width is the width of a stranded wire winding area in the take-up disc.
2) The method comprises the steps that the real-time length L 'of the counter which is wound in a take-up reel is obtained, the length L' of the counter is obtained by a counter and displayed on a human-computer interaction interface, the length of the counter can be accurately obtained through the counter, the counter is obtained before a twisted wire is wound in the take-up reel, and the influence of the tension of the twisted wire wound in the take-up reel, the winding length or the number of layers and the like is avoided;
3) acquiring the instant volume V' of the wire wound on the take-up reel from a first mathematical expression preset in a programmable controller according to the initial data;
4) the programmable controller counts the instant volume V ', and an instant disc diameter R' on the take-up disc is obtained through a preset second mathematical expression;
5) acquiring the instant torque T 'of the magnetic powder clutch from a third mathematical formula preset in the programmable controller according to the instant disc diameter R' and the empty disc diameter R;
6) the programmable controller converts the instant torque T' into a corresponding 0-10V analog quantity recorded into the frequency converter, the output end of the frequency converter AO outputs an adjusting voltage to control the torque of the output end of the magnetic powder clutch, and a take-up reel connected to the output end of the magnetic powder clutch adjusts the winding tension according to the torque to achieve constant tension control.
As a further improvement of the invention: the instantaneous volume V 'is obtained from the diameter of the strand R "and the length L' measured in meters by a meter, wherein the preset first mathematical expression comprises:
instantaneous volume
。
As a further improvement of the invention: the strand diameter R "= the open square of the twist factor 1.155 × the number of strands S × the single branch diameter M.
As a further improvement of the invention: the preset second mathematical formula includes:
instant disc diameter
As a further improvement of the invention: the preset third mathematical expression includes: instant moment T '= initial tension T × instant disc diameter R'/empty disc diameter R.
The utility model provides a control stranding machine receives line tension's device, includes the traction wheel, crosses line wheel, take-up reel and power device and gear connecting shaft pole, and the stranded wire is in proper order through the traction wheel, cross the rolling of line wheel on the take-up reel, wherein: the take-up reel is connected with a power output end of the power device through the magnetic powder clutch and a gear connecting shaft rod, the human-computer interaction device, the programmable controller and the frequency converter are electrically connected through RS485 communication in sequence, and an AO output end of the frequency converter is electrically connected with the magnetic powder clutch.
As a further improvement of the invention: the device comprises a wire passing wheel, a human-computer interaction device and a meter, and is characterized by further comprising a meter counter, wherein the meter counter is a wheel type meter counter, is arranged on the wire passing wheel and is used for detecting the meter counting length of a passing stranded wire, the human-computer interaction device comprises a human-computer interaction interface used for inputting parameters through a touch screen, the meter counter is electrically connected with the human-computer interaction device, and the meter counting length of the stranded wire detected by the meter counter is displayed on the human-computer interaction interface.
The man-machine interaction device inputs the obtained initial parameters and the length of the meter fed back by the meter into the programmable controller, corresponding numerical values are obtained through a preset mode in the programmable controller, the frequency converter adjusts the voltage analog quantity by 0-10V at the output end of A0, the magnetic powder clutch changes the output torque in real time according to the output adjusting voltage signal of the frequency converter, the power transmitted by the power device and the gear connecting shaft rod changes the output torque through the magnetic powder clutch, the output torque acts on the take-up reel, and the tension of the twisted wire wound by the take-up reel is controlled.
Compared with the prior art, the invention has the beneficial effects that:
the invention adjusts the winding tension according to the actual winding working condition of the winding disc, avoids the defect caused by adjusting the tension by monitoring the winding disc parameters through a sensor in the traditional technology, ensures the stability of the winding tension and further controls various performances of the cable wound by the stranded wire.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a ladder diagram of the first equation.
Fig. 3 is a ladder diagram of the calculated wire diameter of the stranded wire.
Fig. 4 is a ladder diagram of the instant disc diameter calculation.
FIG. 5 is a partial ladder diagram of the tension output controlled by the programmable controller.
Detailed Description
The invention will now be further described with reference to the accompanying description and examples:
referring to fig. 1, a device for controlling take-up tension of a stranding machine, comprising a traction wheel 1, a wire passing wheel 2, a take-up reel 3, a power device 4 and a gear connecting shaft rod 5, wherein a strand 6 sequentially passes through the traction wheel 1 and the wire passing wheel 2 to be wound on the take-up reel 3, wherein: the take-up reel 3 is connected with a power output end of the power device 4 through the magnetic powder clutch 10 and the gear connecting shaft rod 5, the human-computer interaction device 7, the programmable controller 8 and the frequency converter 9 are electrically connected through RS485 communication in sequence, and an AO output end of the frequency converter 9 is electrically connected with the magnetic powder clutch 10.
Still include meter rice ware 11, meter rice ware 11 is wheeled meter rice ware, locates on the wire wheel 2 for detect the stranded wire meter rice length of process, meter rice ware is prior art, the stranded wire passes meter rice wheel of meter rice ware, meter rice wheel and be equipped with the extension spring and compress tightly the stranded wire in order to improve measurement accuracy, meter rice length acquires before take-up reel rolling stranded wire, does not receive influences such as tension, rolling length or the number of piles of stranded wire rolling in the take-up reel, and the numerical value of input programmable controller can not produce the difference that deviates from actual rolling length along with the operating mode of rolling stranded wire promptly.
The human-computer interaction device comprises a human-computer interaction interface used for inputting parameters by a touch screen, the meter counter is electrically connected with the human-computer interaction device and displays the meter counting length of the stranded wire detected by the meter counter on the human-computer interaction interface, and the human-computer interaction device is a human-computer interaction device in the prior art and has the functions of parameter input, data feedback input of the meter counter and feedback to the programmable controller.
The frequency converter is a common frequency converter with the function of outputting a 0-10V signal by a direct current analog quantity AO.
The man-machine interaction device inputs the obtained initial parameters and the length of the meter fed back by the meter into the programmable controller, corresponding numerical values are obtained through a preset mode in the programmable controller, the frequency converter adjusts the voltage analog quantity by 0-10V at the output end of A0, the magnetic powder clutch changes the output torque in real time according to the output adjusting voltage signal of the frequency converter, the power transmitted by the power device and the gear connecting shaft rod changes the output torque through the magnetic powder clutch, the output torque acts on the take-up reel, and the tension of the twisted wire wound by the take-up reel is controlled.
A method of controlling take-up tension of a wire strander, comprising:
inputting preset initial parameters on an interface of a human-computer interaction device, obtaining instant parameters from the preset initial parameters through a programmable controller, writing the instant parameters into a frequency converter through RS485 communication to obtain an analog quantity of a voltage signal of 0-10V, outputting an adjusting voltage for controlling the torque of a magnetic powder clutch through an AO output end of the frequency converter, obtaining an instant moment through the magnetic powder clutch along with the change of the adjusting voltage, and connecting the output end of the magnetic powder clutch with a take-up reel and controlling the take-up tension of the take-up reel;
which comprises the following steps:
1) the method comprises the steps of obtaining a plurality of initial parameters input by a human-computer interaction interface, wherein the plurality of initial parameters comprise a single branch diameter M, a strand number S, an empty disc diameter R, a disc width L and an initial tension T, the single branch diameter is the diameter of one branch in a stranded wire, the strand number is the number of the single branch in the stranded wire, the empty disc diameter is the diameter of an initial empty disc when the stranded wire is not wound in a take-up disc, and the disc width is the width of a stranded wire winding area in the take-up disc.
2) Acquiring the instant length L 'of meter in meter rolled in a take-up reel, wherein the length L' of meter in meter is acquired by a meter counter and displayed on a human-computer interaction interface;
3) acquiring the instant volume V' of the wire wound on the take-up reel from a first mathematical expression preset in a programmable controller according to the initial data;
referring to fig. 2, the instant volume V ' is the volume of the stranded wire wound in the take-up reel, the gap generated by the stranded wire when wound is negligible, at a certain working moment, the instant volume of the stranded wire in the take-up reel is the product of the length L ' in meters and the area of the cross section of the stranded wire, and the length L ' in meters is the reading of the meter counter minus a fixed value (the distance between the meter counter and the take-up reel), that is, the instant volume is:
referring to fig. 3, R ″ is a wire diameter of a stranded wire, the stranded wire is formed by winding a plurality of branch units, and the stranded wire diameter is a product of an open square of a strand number S, a single branch diameter M and a stranding coefficient of 1.155 according to a principle that a volume of the stranded wire is constant with the volume of the plurality of branch units, that is, the stranded wire diameter is:
4) the programmable controller counts the instant volume V ', and an instant disc diameter R' on the take-up disc is obtained through a preset second mathematical expression;
referring to fig. 4, the instant disc diameter R' is similarly based on the principle of volume invariance, and at a certain working time, the instant disc diameter is:
5) acquiring the instant torque T 'of the magnetic powder clutch from a third mathematical formula preset in the programmable controller according to the instant disc diameter R' and the empty disc diameter R; at this time, the instant moment T 'is obtained by the initial tension T corresponding to the proportionality coefficient between the instant disc diameter R' and the empty disc diameter R, wherein the instant moment is as follows:
T’= T × R’/R
the magnetic powder clutch can change the rotating speed or torque by adjusting the exciting current, is used as a continuously variable transmission, can change along with the constant change of the instant torque T' in the winding of the take-up reel, and realizes real-time automatic tracking.
6) Referring to fig. 5, the programmable controller converts the instant torque T' into a corresponding 0-10V analog quantity recorded into the frequency converter, the frequency converter uses a regulated voltage analog quantity of 0-10V at the output end of a0, the magnetic powder clutch changes the output torque in real time according to the output regulated voltage signal of the frequency converter, the power transmitted by the power device and the gear connecting shaft rod changes the output torque through the magnetic powder clutch, and the output torque acts on the take-up reel to control the tension of the take-up reel for winding the twisted wire.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (2)
1. The utility model provides a control stranding machine receives line tension's device, includes the traction wheel, crosses line wheel, take-up reel and power device and gear connecting shaft pole, and the stranded wire is in proper order through the traction wheel, cross the rolling of line wheel on the take-up reel, characterized by: the take-up reel is connected with a power output end of the power device through the magnetic powder clutch and a gear connecting shaft rod, the human-computer interaction device, the programmable controller and the frequency converter are electrically connected through RS485 communication in sequence, and an AO output end of the frequency converter is electrically connected with the magnetic powder clutch.
2. The device for controlling the take-up tension of the stranding machine as claimed in claim 1, characterized in that: the wire passing wheel is arranged on the wire passing wheel and used for detecting the length of a passing stranded wire in a meter-counting manner, and the meter-counting device is electrically connected with the human-computer interaction device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920823851.4U CN210150498U (en) | 2019-06-03 | 2019-06-03 | Device for controlling take-up tension of stranding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920823851.4U CN210150498U (en) | 2019-06-03 | 2019-06-03 | Device for controlling take-up tension of stranding machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077905A (en) * | 2019-06-03 | 2019-08-02 | 广州市鸿辉电工机械有限公司 | A kind of method and device thereof controlling stranding machine takeup tension |
| CN114137824A (en) * | 2021-11-29 | 2022-03-04 | 长飞光纤光缆股份有限公司 | Method and system for controlling high-speed paying-off stability of small-pitch ADSS optical cable |
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2019
- 2019-06-03 CN CN201920823851.4U patent/CN210150498U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077905A (en) * | 2019-06-03 | 2019-08-02 | 广州市鸿辉电工机械有限公司 | A kind of method and device thereof controlling stranding machine takeup tension |
| CN114137824A (en) * | 2021-11-29 | 2022-03-04 | 长飞光纤光缆股份有限公司 | Method and system for controlling high-speed paying-off stability of small-pitch ADSS optical cable |
| CN114137824B (en) * | 2021-11-29 | 2024-01-16 | 长飞光纤光缆股份有限公司 | Method and system for controlling high-speed paying-off stability of small-pitch ADSS optical cable |
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