CN101219743A - Steel strip winding device with varying tension force for pre-stress die making and control method thereof - Google Patents
Steel strip winding device with varying tension force for pre-stress die making and control method thereof Download PDFInfo
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- CN101219743A CN101219743A CNA2008100137992A CN200810013799A CN101219743A CN 101219743 A CN101219743 A CN 101219743A CN A2008100137992 A CNA2008100137992 A CN A2008100137992A CN 200810013799 A CN200810013799 A CN 200810013799A CN 101219743 A CN101219743 A CN 101219743A
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Abstract
The invention discloses a steel strip winding device of variable strain used for manufacturing prestressed dies and a controlling method thereof. According to a preset curve of the winding strain theory, value of the strain of steel strip winding is automatically regulated, so as to realize the automatization during the process of closed loop controlling and die manufacturing of winding strain. The invention comprises an uncoiling mechanism, a roll smoothing mechanism, a strain controlling mechanism, a strain detecting mechanism, and a winding mechanism connected in turn; the strain controlling mechanism consists of a strain coarse adjustment device and a strain fine adjustment device; a pressure sensor is arranged inside the strain detecting mechanism; an encoder is arranged inside the winding mechanism; the pressure sensor and the encoder input real time obtained data of winding strain and winding layers into an automatic controlling system; the automatic controlling system is connected with the strain controlling mechanism and the winding mechanism; the automatic controlling device establishes a controlling method according to the curve of the winding strain theory; the closed loop controlling under the variable strain condition is realized by controlling an oil pressure of a cylinder in the strain controlling mechanism and a motor torque of the winding mechanism.
Description
Technical field
The present invention relates to a kind of steel strip winding device with varying tension force and control method thereof, can be according to the steel strip winding device with varying tension force and the control method thereof that pre-stress die is made that be used for of predefined theoretical curve automatically regulating steel band winding tension numerical value.
Background technology
Synthetic and the manufacture field at materials such as superhard materials such as artificially synthesizing diamond, metal cold extruding, cold forgings, the effect of mould is most important.Because service conditions is extremely abominable, mould is bearing the superelevation live load, usually, range of pressure 2～10GPa, 300～2000 ℃ of range of temperaturess cause the service life of mould very short.Adopt pre-stress die, can effectively reduce the tangential stress of mould inside, improve the strength at repeated alternation of mould, increase the service life.It is a kind of pre-stress die of new structure that steel band twines pre-stress die, overlapping combination type prestressed mould with traditional multilayer compares, have compact conformation, the pretension effect is remarkable, mold cavity deformation is little, characteristics such as long service life are being represented the developing direction of pre-stress die.The design process of steel band winding pre-stress die should at first be determined rational predetermincd tension according to mold materials, size and live load, designs the theoretical curve that twines the number of plies, winding tension then.The manufacturing of steel band winding pre-stress die relates to the change tension force automation winding technology under the closed loop control mode, steel strip winding device with varying tension force and control method thereof are important equipment of realization theory design-calculated and means, have become the gordian technique in the steel band winding pre-stress die field.
Summary of the invention
Purpose of the present invention is exactly in order to solve the vacancy of prior art, a kind of steel strip winding device with varying tension force and control method thereof that pre-stress die is made that be used for is provided, can realize the closed loop control of winding tension and the automation of die manufacture according to the numerical value of predefined winding tension theoretical curve automatically regulating steel band winding tension.
The objective of the invention is to be achieved through the following technical solutions:
A kind of steel strip winding device with varying tension force that is used for the pre-stress die manufacturing, it comprises bonded assembly uncoiling mechanism successively, smoothing mechanism, tension control mechanism, tension-detecting mechanism, winding mechanism, tension control mechanism is by the tension force rack and rinion adjustment, tension force fine tuning device two parts are formed, setting pressure sensor in tension-detecting mechanism, in winding mechanism, be provided with coder, winding tension that pressure sensor and coder will obtain in real time and winding layer logarithmic data are imported automatic autonomous cruise speed system, autonomous cruise speed system is connected with winding mechanism with tension control mechanism, autonomous cruise speed system is set up control method according to the winding tension theoretical curve, by the oil pressure of control tension control mechanism oil cylinder and the motor torque of winding mechanism, realize becoming the closed loop control under the tension force condition.
Described uncoiling mechanism comprises the uncoiling frame, on the uncoiling frame mandrel is installed, and steel coil strip places on the mandrel.
Described smoothing mechanism comprises the smoothing frame, and track adjusting wheel and straightener roll group are installed on it, and the straightener roll group is made up of staggered two groups of straightener rolls up and down, and wherein, the top straightener roll has two at least, and the bottom straightener roll has more at least one than top straightener roll.
Described tension control mechanism is made up of tension force rack and rinion adjustment, tension force fine tuning device two parts, and they are installed on the same fuselage; The tension force rack and rinion adjustment is positioned at the side near smoothing mechanism; The tension force rack and rinion adjustment is identical with the structure of tension force fine tuning device, and both include the piston type clamping oil cylinder, and the end of piston rod connects top board, and top board matches with guide rail simultaneously, and lower platen is installed on the fuselage; Tension control mechanism also is equipped with the electrohydraulic servo system of proportional control, and electrohydraulic servo system is connected with autonomous cruise speed system, can regulate the oil pressure and the gripping power of two clamping oil cylinders respectively; The gripping power numerical value of tension force rack and rinion adjustment output is divided into some shelves, but stepped; The gripping power of tension force fine tuning device output can change continuously, and winding tension equals the steel band friction drag sum of tension force rack and rinion adjustment and the generation of tension force fine tuning device.
Described tension-detecting mechanism comprises frame, and rotating cylinder support on the middle part of frame is is installed rotating cylinder on it; Deposit the rotating cylinder support at last rotating cylinder support bilateral symmetry cloth, rotating cylinder down is installed on it, midway location is provided with pressure sensor below last rotating cylinder support, and pressure sensor is connected with autonomous cruise speed system.
Described winding mechanism comprises the winding frame, and the motor reducer group is installed on it, and it is connected with main shaft by coupler, and main shaft is connected with chuck by bearing set, and main shaft is provided with coder, and the motor reducer group all is connected with autonomous cruise speed system with coder.
A kind of control method that is used for the steel strip winding device with varying tension force of pre-stress die manufacturing,
1) before beginning to twine mould, with the theoretical curve of known winding tension and twine design information such as the number of plies and import automatic autonomous cruise speed system; Winding tension in the winding process stems from the friction drag of winding mechanism motor torque and the generation of tension control mechanism clamping oil cylinder, the controlled object of system is the motor torque of winding mechanism and the oil pressure of tension control mechanism coarse adjustment and fine tuning clamping oil cylinder, according to the theoretical curve of winding tension and twine the design information of inputs such as the number of plies, autonomous cruise speed system generates the theory control curve at oil cylinder oil pressure and motor torque;
2) winding process is divided into sets up tension force, stable winding and three phases is twined in end;
Drive the steel band motion by winding mechanism; The tension force rack and rinion adjustment output gripping power of tension control mechanism is divided into some shelves, but stepped; The gripping power of tension force fine tuning device output can change continuously, and winding tension equals the steel band friction drag sum of tension force rack and rinion adjustment and the generation of tension force fine tuning device;
In the stable winding stage, the oil pressure of tension force rack and rinion adjustment clamping oil cylinder keeps constant value, and theoretical winding tension descends with twining number of plies increase, and the theoretical curve of the oil pressure of tension force fine tuning device clamping oil cylinder and the torque of motor is on a declining curve;
3) in winding process, tension-detecting mechanism obtains to act on the pressure of pressure sensor in real time, and actual winding tension is half of pressure value in the steel band; Utilize the coder of winding mechanism to obtain the winding number of plies of mould in real time, twine the number of plies and multiply by thickness of strips and adds the real radius that the outside radius of core rod can obtain mould; The actual torque of motor reducer group output equals the product of steel band winding tension and mold radius;
4) automatic autonomous cruise speed system compares the theoretical value and the detected value of steel band winding tension in real time, and the output control signal is constantly adjusted the oil pressure of tension force fine tuning device clamping oil cylinder and the torque of winding mechanism motor, can realize becoming the closed loop control under the tension force condition.
The present invention includes uncoiling mechanism, smoothing mechanism, tension control mechanism, tension-detecting mechanism, winding mechanism, automatic autonomous cruise speed system.Uncoiling mechanism is formed unpowered driving by uncoiling frame, mandrel etc.Smoothing mechanism forms unpowered driving by track adjusting wheel, straightener roll group etc.Tension control mechanism is made up of tension force rack and rinion adjustment, tension force fine tuning device two parts, is equipped with the electrohydraulic servo system of proportional control, by regulating the oil pressure of two clamping oil cylinders respectively, can change the friction drag numerical value that acts on steel band, changes winding tension.Tension-detecting mechanism is by pressure sensor, rotating cylinder, support etc. are formed up and down, and pressure sensor is positioned over the below of rotating cylinder support, and pressure detecting signal is imported automatic autonomous cruise speed system.Winding mechanism is made up of motor reducer group, coupler, chuck, frame, coder etc., and mould is clamped on the chuck and rotates thereupon, can obtain by coder and twine number of plies information, and be converted to the real time data of mold radius.Automatically autonomous cruise speed system is made up of PLC, control panel etc., can import the design information that twines pre-stress die, generate the theoretical curve of motor torque and coarse adjustment and fine tuning clamping oil cylinder oil pressure, the detection data of the input winding tension and the winding number of plies, the output control information, relevant procedure stores is among autonomous cruise speed system.
Beneficial effect of the present invention: system architecture is simple, and is easy to use, can twine the design information of pre-stress die according to the steel band of setting, and realizes the closed loop control of winding tension and the automation of die manufacture.
Description of drawings
Fig. 1 is an equipment structure chart of the present invention;
Fig. 2 is a tension control mechanism of the present invention;
Fig. 2 a is the A-A cutaway view of Fig. 2;
Fig. 3 is a tension-detecting mechanism of the present invention;
Fig. 3 a is the B-B cutaway view of Fig. 3;
Fig. 4 is a winding mechanism of the present invention;
Fig. 5 is the used control diagram of curves of control method of the present invention.
Among the figure, 1, uncoiling mechanism; 2, smoothing mechanism; 3, tension control mechanism; 4, tension-detecting mechanism; 5, winding mechanism; 301, fuselage; 302, clamping oil cylinder; 303 guide rails; 304, top board; 305, lower platen; 401, frame; 402, go up the rotating cylinder support; 403, go up rotating cylinder; 404, following rotating cylinder; 405, following rotating cylinder support, 406, pressure sensor; 407, bearing set; 408, guide pillar; 501, frame; 502, motor reducer group; 503, coupler; 504, main shaft; 505, bearing set; 506, chuck.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing and embodiment.
A kind of steel strip winding device with varying tension force that is used for the pre-stress die manufacturing as shown in Figure 1, comprises bonded assembly uncoiling mechanism 1, smoothing mechanism 2, tension control mechanism 3, tension-detecting mechanism 4, winding mechanism 5 successively, and automatic autonomous cruise speed system etc.The keystone configuration and the function of each several part are as described below:
Uncoiling mechanism 1 is used to support steel coil strip, and it is made up of uncoiling frame and the mandrel on it etc., and the uncoiling frame fixes on the ground, unpowered driving, and steel coil strip can freely be rotated around mandrel.
Smoothing mechanism 2 is used for the steel band sense of motion is led and steel strip surface is smoothed, and it is made up of smoothing frame, track adjusting wheel, straightener roll group etc., and the smoothing frame fixes unpowered driving on the ground.Track adjusting wheel can adapt to because the variation of the steel band inlet angle that the steel coil strip diameter reduces to cause, and purpose is the steel band inlet level height that keeps constant.The straightener roll group is provided with the upper and lower two-layer a plurality of steel riders that are interspersed, and steel band passes the straightener roll group in the smoothing mechanism 2 under the tension of winding tension, produces plastic deformation and realizes the surface smoothing.The quantity of upper strata steel rider is greater than 2, and lower floor's steel rider is Duoed one than the upper strata, and steel rider can be around rotational separately.
Tension control mechanism 3 is shown in Fig. 2, Fig. 2 a, and it is used for the numerical value of winding tension is controlled, and is made up of tension force rack and rinion adjustment, tension force fine tuning device two parts.The tension force rack and rinion adjustment has identical physical construction with tension force fine tuning device, and is installed on the same fuselage 301, and fuselage 301 adopts the closed type structure with good stiffness.The tension force rack and rinion adjustment is positioned at the upstream of tension force fine tuning device, and promptly near a side of smoothing mechanism 2, their structure comprises piston type clamping oil cylinder 302, guide rail 303, top board 304, lower platen 305 etc.The cylinder body of clamping oil cylinder 302 is by being bolted on the fuselage 301, and the end of piston rod is connected with top board 304, and top board 304 matches with guide rail 303, can move up and down, and lower platen (305) is installed on the fuselage (301).Guide rail 303 is fixed on the right side column of fuselage 301, can bear from the horizontal force action of top board 304 along the steel band sense of motion, avoids piston rod to be subjected to the deleterious effect of moment of flexure.When clamping oil cylinder 302 epicoele oil-feeds, oil pressure acts on top board 304 by piston rod, and steel band is clamped on the lower platen 305, produces friction force on the upper and lower surface of steel band.Total winding tension equals the steel band friction drag sum of tension force rack and rinion adjustment and the generation of tension force fine tuning device, the gripping power numerical value of coarse adjustment clamping oil cylinder output is divided into the plurality of fixed shelves, but stepped is twined its oil pressure maintenance constant value in the winding process, promptly keeps gripping power constant; The gripping power of tension force fine tuning device output can change continuously, but the oil pressure of the electrohydraulic servo system real-time regulated fine tuning clamping oil cylinder of passing ratio control can change the numerical value of this gripping power and friction force, makes winding tension meet predefined theoretical curve.
Tension-detecting mechanism 4 is shown in Fig. 3, Fig. 3 a, it is used for detecting in real time the steel band tension force of winding process, and with signal conveys to automatic autonomous cruise speed system, it by frame 401, go up rotating cylinder support 402, go up rotating cylinder 403, down rotating cylinder 404, rotating cylinder support 405, pressure sensor 406, bearing set 407, guide pillar 408 etc. are formed down.Last rotating cylinder support 402 places the middle part of frame 401, and rotating cylinder support 405 is symmetrically arranged in the both sides of rotating cylinder support 402 under two groups, and steel band is when rotating cylinder 403 is with following rotating cylinder 404 on passing, and its sense of motion should be parallel to the axis of pressure sensor 406.Last rotating cylinder 403, following rotating cylinder 404 are installed on rotating cylinder support 402, the following rotating cylinder support 405 by bearing set respectively, can freely rotate around axis separately.Pressure sensor 406 is installed in the below midway location of rotating cylinder support 402, and last rotating cylinder support 402 leads by two groups of guide pillars 408 that are fixed on the frame 401, avoids producing.The influence of negligible friction, the pressure that acts on pressure sensor 406 equals the twice of steel band winding tension numerical value, and the pressure that acts on the rotating cylinder support by real-time measurement can obtain the winding tension of steel band indirectly.
Below in conjunction with Fig. 5 control method schematic diagram, the autocontrol method of steel strip winding device with varying tension force is described further.
1) before starting the mould winding process, design informations such as the known winding tension theoretical curve T and the winding number of plies is imported automatic autonomous cruise speed system.Winding tension in the winding process stems from the friction drag of winding mechanism 5 motor torques and the generation of tension control mechanism 3 clamping oil cylinders, and the controlled object of system is the torque M of winding mechanism 5 motors; The oil pressure p of tension control mechanism 3 coarse adjustment clamping oil cylinders
1The oil pressure p of fine tuning clamping oil cylinder
2According to the theoretical curve T of winding tension and the design information that twines inputs such as the number of plies, autonomous cruise speed system generates diagram automatically at coarse adjustment oil pressure p
1, fine tuning oil pressure p
2Theory control curve with motor torque M;
2) winding process is divided into sets up tension force, stable winding and three phases is twined in end, respectively the three phases of corresponding time coordinate axle t: 0-t
sBe tension force establishment stage I, t
s-t
mStable winding Phase, t
m-t
nFinish to twine Phase I.At stable winding stage (t
s-t
m), the oil pressure p of coarse adjustment clamping oil cylinder
1Keep constant value, theoretical winding tension T descends with twining the number of plies (or time t) increase, so fine tuning clamping oil cylinder oil pressure p
2And the theoretical curve of motor torque M is on a declining curve.In any time of mould winding process, winding tension T, coarse adjustment oil pressure p
1, fine tuning oil pressure p
2And the corresponding relation that existence is determined between the motor torque M;
3) in winding process, utilize tension-detecting mechanism 4 to obtain to act on the pressure of pressure sensor 406 in real time, actual winding tension is half of pressure value in the steel band.Utilize the coder of winding mechanism 5 to obtain the winding number of plies of mould in real time, twine the number of plies and multiply by thickness of strips and adds the real radius that the outside radius of core rod can obtain mould.The actual torque of motor reducer group 502 outputs equals the product of steel band winding tension and mold radius;
4) automatically autonomous cruise speed system compares detected value and steel band winding tension theoretical value shown in Figure 5 in real time, exports control signal, thereby constantly adjusts fine tuning clamping oil cylinder oil pressure p
2And motor torque M, can realize becoming the closed loop control under the tension force condition.
Working process of the present invention is:
According to the design information that twines pre-stress die, determine to twine and use steel coil strip.Select the high-strength spring steel, thickness of strips is less than 0.2mm, and width determines that according to the actual axial length that is wound mould total length should satisfy the material usage that twines a secondary mould.Before the equipment energising, steel coil strip is placed on the mandrel of uncoiling mechanism 1, steel coil strip can freely be rotated around the axis of mandrel.By hand steel band is launched, pass track adjusting wheel, the straightener roll group of smoothing mechanism 2 successively, the tension force rack and rinion adjustment of tension control mechanism 3, tension force fine tuning device, the rotating cylinder group of tension-detecting mechanism 4, cut off the stub bar of certain-length, smooth processing is done in the steel band end, then, steel band is fixed on the outer cylinder surface of mould by methods such as welding.
Before equipment energising back starts automatic winding program, at first design informations such as the known winding tension theoretical curve and the winding number of plies are imported automatic autonomous cruise speed system, theory control curve according to automatic two the clamping oil cylinder oil pressure that generate of autonomous cruise speed system, motor torque forms the closed loop control program.Then, start winding mode of operation automatically.Winding process is divided into sets up tension force, stable winding and end winding three phases, and cooresponding winding process and control method are as follows successively:
1) setting up the tension force stage, at first, the oil pressure of coarse adjustment clamping oil cylinder, fine tuning clamping oil cylinder reaches its maximum set value respectively, clamps steel band and makes it and can not move.Lag behind a period of time, electric motor starting, output torque constantly increases.In this process, the increase situation of pressure sensor continuous gauging steel band tension force, after the setting value that reaches initial tension, the oil pressure of coarse adjustment clamping oil cylinder still keeps constant value, its gripping power is constant, the oil pressure of fine tuning clamping oil cylinder then reduces gradually according to theoretical curve, produces slip until steel band between upper and lower clamping plate, thus the subordinate phase that the beginning mould twines.
2) the stable winding stage is a very long process consuming time, and during this period, along with the increase of twining the number of plies, the gripping power of coarse adjustment clamping oil cylinder is constant, and fine tuning clamping oil cylinder oil pressure and motor torque change according to theoretical curve.Tension-detecting mechanism is with the extremely automatic autonomous cruise speed system of tension signal continuous feedback, the winding number of plies of coder continuous feedback reality, automatically autonomous cruise speed system is analyzed above-mentioned measured result, calculate, and compare with the winding tension theoretical curve that presets, the generated error control signal, be delivered to clamping oil cylinder electrohydraulic servo system and alternating-current variable frequency motor respectively, with the oil pressure in the adjustment of tonicity fine tuning device clamping oil cylinder and the output torque of motor, thereby realize continuous change tension force winding process.
3) when the winding number of plies that detects reaches setting value, winding process enters into and finishes the winding stage.At this moment, keep the output torque of motor constant, should suitably add the gripping power of hightension fine tuning device clamping oil cylinder, cause steel band to move, motor stops operating.Keep this state a period of time, methods such as utilization welding are fixed the outer steel band of mould.Device powers down is cut off unnecessary steel band at weld then, will twine mould and take off from chuck.So far, a secondary steel band twines the manufacturing process end of pre-stress die.
Claims (7)
1. one kind is used for the steel strip winding device with varying tension force that pre-stress die is made, it is characterized in that: it comprises bonded assembly uncoiling mechanism (1) successively, smoothing mechanism (2), tension control mechanism (3), tension-detecting mechanism (4), winding mechanism (5), tension control mechanism is by the tension force rack and rinion adjustment, tension force fine tuning device two parts are formed, setting pressure sensor (406) in tension-detecting mechanism (4), in winding mechanism (5), be provided with coder, winding tension and winding layer logarithmic data that pressure sensor (406) and coder will obtain are in real time imported automatic autonomous cruise speed system, autonomous cruise speed system is connected with winding mechanism (5) with tension control mechanism (3), autonomous cruise speed system is set up control method according to the winding tension theoretical curve, by the oil pressure of control tension control mechanism (3) oil cylinder and the motor torque of winding mechanism (5), realize becoming the closed loop control under the tension force condition.
2. the steel strip winding device with varying tension force that is used for the pre-stress die manufacturing according to claim 1, it is characterized in that: described uncoiling mechanism (1) comprises the uncoiling frame, on the uncoiling frame mandrel is installed, and steel coil strip places on the mandrel.
3. the steel strip winding device with varying tension force that is used for the pre-stress die manufacturing according to claim 1, it is characterized in that: described smoothing mechanism (2) comprises the smoothing frame, track adjusting wheel and straightener roll group are installed on it, the straightener roll group is made up of staggered two groups of straightener rolls up and down, wherein, the top straightener roll has two at least, and the bottom straightener roll has more at least one than top straightener roll.
4. the steel strip winding device with varying tension force that is used for the pre-stress die manufacturing according to claim 1, it is characterized in that: described tension control mechanism (3) is made up of tension force rack and rinion adjustment, tension force fine tuning device two parts, and they are installed on the same fuselage (301); The tension force rack and rinion adjustment is positioned at the side near smoothing mechanism (2); The tension force rack and rinion adjustment is identical with the structure of tension force fine tuning device, both include piston type clamping oil cylinder (302), the end of piston rod connects top board (304), and top board (304) matches with guide rail (303) simultaneously, and lower platen (305) is installed on the fuselage (301); Tension control mechanism (3) also is equipped with the electrohydraulic servo system of proportional control, and electrohydraulic servo system is connected with autonomous cruise speed system, can regulate the oil pressure and the gripping power of two clamping oil cylinders (302) respectively; The gripping power numerical value of tension force rack and rinion adjustment output is divided into some shelves, but stepped; The gripping power of tension force fine tuning device output can change continuously, and winding tension equals the steel band friction drag sum of tension force rack and rinion adjustment and the generation of tension force fine tuning device.
5. the steel strip winding device with varying tension force that is used for the pre-stress die manufacturing according to claim 1, it is characterized in that: described tension-detecting mechanism (4) comprises frame (401), at the middle part of frame (401) is last rotating cylinder support (402), installs rotating cylinder (403) on it; Deposit rotating cylinder support (405) at last rotating cylinder support (402) bilateral symmetry cloth, rotating cylinder (404) down is installed on it, midway location is provided with pressure sensor (406) in last rotating cylinder support (402) below, and pressure sensor (406) is connected with autonomous cruise speed system.
6. the steel strip winding device with varying tension force that is used for the pre-stress die manufacturing according to claim 1, it is characterized in that: described winding mechanism (5) comprises winding frame (501), motor reducer group (502) is installed on it, it is connected with main shaft (504) by coupler (503), main shaft (504) is connected with chuck (506) by bearing set (505), main shaft (504) is provided with coder, and motor reducer group (502) all is connected with autonomous cruise speed system with coder.
7. the described control method that is used for the steel strip winding device with varying tension force that pre-stress die makes of a claim 1 is characterized in that:
1) before beginning to twine mould, with the theoretical curve of known winding tension and twine design information such as the number of plies and import automatic autonomous cruise speed system; Winding tension in the winding process stems from the friction drag of winding mechanism (5) motor torque and the generation of tension control mechanism (3) clamping oil cylinder, the controlled object of system is the motor torque of winding mechanism (5) and the oil pressure of tension control mechanism (3) coarse adjustment and fine tuning clamping oil cylinder, according to the theoretical curve of winding tension and twine the design information of inputs such as the number of plies, autonomous cruise speed system generates the theory control curve at oil cylinder oil pressure and motor torque;
2) winding process is divided into sets up tension force, stable winding and three phases is twined in end;
Drive the steel band motion by winding mechanism (5); The tension force rack and rinion adjustment output gripping power of tension control mechanism (3) is divided into some shelves, but stepped; The gripping power of tension force fine tuning device output can change continuously, and winding tension equals the steel band friction drag sum of tension force rack and rinion adjustment and the generation of tension force fine tuning device;
In the stable winding stage, the oil pressure of tension force rack and rinion adjustment clamping oil cylinder keeps constant value, and theoretical winding tension descends with twining number of plies increase, and the theoretical curve of the oil pressure of tension force fine tuning device clamping oil cylinder and the torque of motor is on a declining curve;
3) in winding process, tension-detecting mechanism (4) obtains to act on the pressure of pressure sensor (406) in real time, and actual winding tension is half of pressure value in the steel band; Utilize the coder of winding mechanism (5) to obtain the winding number of plies of mould in real time, twine the number of plies and multiply by thickness of strips and adds the real radius that the outside radius of core rod can obtain mould; The actual torque of motor reducer group (502) output equals the product of steel band winding tension and mold radius;
4) automatic autonomous cruise speed system compares the theoretical value and the detected value of steel band winding tension in real time, and the output control signal is constantly adjusted the torque of the oil pressure and winding mechanism (5) motor of tension force fine tuning device clamping oil cylinder, can realize becoming the closed loop control under the tension force condition.
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| CNB2008100137992A CN100572242C (en) | 2008-01-18 | 2008-01-18 | Be used for steel strip winding device with varying tension force and control method thereof that pre-stress die is made |
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| CN2230750Y (en) * | 1995-07-13 | 1996-07-10 | 北京东星冶金新技术开发公司 | Roll winding machine |
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