Background technology
The product line of current covered wire cable is in process of production, is directly received on the wooden dish of ¢ 400mm, and often coiling length is 3Km.For meeting rubber-insulated wire jumping fiber needed for user, need first covered wire cable to be divided into 20m, 30m, 50m, 70m, 90m, 100m, 150m different length, carry out wearing the process such as loose mail, grinding again and make rubber-insulated wire jumping fiber, and present stage has just risen rubber-insulated wire jumping fiber, ripe equipment has not also been had to go to the segmentation of covered wire cable.
The requirement of stranded cable to laying tension of common cable is not strict, and the payoff tensioner of stranded equipment is very simple, and the size of tension force is by regulating manually.Traditional unwrapping wire process generally adopts the unwrapping wire mode of passive type, does not apply laying tension to actinobacillus wheel, drives actinobacillus wheel by the rotation of take-up pulley, thus realizes the unwrapping wire process of actinobacillus wheel.Traditional take-up process is then adopt passive type tension force take-up mode, and take-up pulley relies on the size of regulator potentiometer to control frequency converter, and frequency converter is by controlling the rotating speed of motor thus realizing the take-up of take-up pulley.Like this, the size of tension value can not be carried out detection and automatically be controlled.
Chinese Patent Application No. 201210159023.8 discloses a kind of superconducting conductor stranded cable tension automatic control system, by rotating shaft, draw drum (2) is installed in twisted wire framework (1), the rear of twisted wire framework (1) is provided with guide roller (3), the rear of guide roller (3) is provided with take-up reel (4), take-up reel (4) is connected with take-up motor (5), also comprise the unwrapping wire motor (6) be connected with draw drum (2), tension pick-up (7) is connected with guide roller (3); In control circuit in the signal access control cabinet of tension pick-up (7), the take-up motor inverter (14) of take-up motor (5) is connected with the PLC of control circuit respectively with the unwrapping wire motor inverter (12) of unwrapping wire motor (6).The unwrapping wire of this system and take-up are all driven by the motor of the Frequency Converter Control by correspondence, and after carrying out signal transacting by PLC, pass to unwrapping wire, the take-up speed of the corresponding motor of corresponding Frequency Converter Control, this device needs two frequency converters and corresponding PLC and host computer, control procedure is complicated, and cost is higher.
China Patent No. 200920352194.6 discloses a kind of cable winding machine, be provided with in frame (1) lower end automatically enter disc mechanism (2), drum rolls out mechanism (3), be respectively arranged with draw drum (4), take-up reel (5) on the top automatically entering disc mechanism (2), drum rolls out mechanism (3), automatically enter disc mechanism (2), drum rolls out mechanism (3), draw drum (4), take-up reel (5) drive respectively connect motor (6); The first regulating wheel (61), the second regulating wheel (62), the 3rd regulating wheel (63) is from left to right respectively arranged with on the top of draw drum (4), take-up reel (5), between the first regulating wheel (61), the second regulating wheel (62), be provided with tension detect transducer (7), between the second regulating wheel (62), the 3rd regulating wheel (63), be provided with meter counter (8).Unwrapping wire, the take-up of this device are also driven by motor respectively, tension detect transducer is utilized to detect tension signal, but in this device, frequency converter is not set, its tension signal is not clearly be connected with unwrapping wire motor or with take-up motor yet, its control principle cannot be known, the synchronism of unwrapping wire and take-up can not be realized.
Summary of the invention
The object of this invention is to provide a kind of cable separate machine automatic control system, to solve the problem of existing unwrapping wire winding control system control procedure complexity or poor synchronization.
In order to realize above object, the technical solution adopted in the present invention is: a kind of cable separate machine automatic control system, comprise actinobacillus device and take-up, described actinobacillus device comprises take-up motor, described take-up comprises unwrapping wire motor, described unwrapping wire motor is driven by a DC speed regulation module, the outgoing line side of described actinobacillus device is provided with a straining pulley, the rotating shaft of described straining pulley is in transmission connection by transmission mechanism and a tension force potentiometer, and the described signal output part of tension force potentiometer is connected with the control input end of DC speed regulation module; Described take-up motor is connected with a transducer drive, and the drive output of this frequency converter is connected with the power input of take-up motor.
This control system also comprises meter-measuring device, and described meter-measuring device comprises meter counter and the proximity switch be located on one group of fabric wheel correspondence position and the induction point corresponding with proximity switch; The signal output part of proximity switch is connected with the signal input part of meter counter, and the stopping control output end of meter counter is connected the stopping for controlling take-up motor with a metering shutdown switch.
Described meter counter also has metering speed Control end, and this metering speed Control end is connected with the multistage speed control end of frequency converter.
Corresponding position below described straining pulley when it hangs is provided with broken string limit switch, and described broken string limit switch is fixed on an installing rack.
Described transmission mechanism is rotate the tension force fork be assemblied in a frame, and one end of this tension force fork is vertical with the rotating shaft of straining pulley to be fixed together, and the other end and tension force potentiometer are in transmission connection.
Also be provided with one between the outgoing line side of described draw drum and straining pulley and determine runner, the top of described straining pulley is provided with a line storage wheel between straining pulley and take-up.
Described fabric wheel at least comprises upper fabric wheel for making cable space spacing and lower fabric wheel, and upper fabric wheel is two, and lower fabric wheel is one, and lower line ball position of wheel is fabric wheel lower middle position place on two.
Cable separate machine automatic control system of the present invention adopts DC speed regulation module, frequency converter drives unwrapping wire motor and take-up motor respectively, frequency converter is utilized to regulate the rotating speed of take-up motor, by moving up and down of the straining pulley that is connected with actinobacillus device, change the output signal sending to DC speed regulation module of tension force potentiometer, and then regulate the payingoff speed of unwrapping wire motor, realize the synchronous of unwrapping wire and rolling, not only realize Systematical control stable, simple to operate, respond well.
The control connection of high-resolution counter and frequency converter, by the dual output signal controlling of meter counter, realizes the gearshift adjustment of take-up motor, and winding motor is reduction of speed running when metering closes on, and shut down for winding motor and can stand and can stop, rolling is without sliding, and metering is accurate.
Discharge at cable or occur broken string situation, by the contact of break limit switch and straining pulley, tension force potentiometer centre cap is disconnected, and DC Module no-output voltage, unwrapping wire motor does not turn, and realizes breaking protection.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 cable separate machine automatic control system embodiment of the present invention, as seen from the figure, this system comprises actinobacillus device, take-up and meter-measuring device, cable via actinobacillus device is connected with take-up by after meter-measuring device, actinobacillus device comprises draw drum 1 and with the unwrapping wire motor 2 of draw drum transmission control connection and drive with unwrapping wire motor the DC speed regulation module be connected, take-up comprises take-up reel 3 and with take-up reel transmission control connection take-up motor and drive with take-up motor the frequency converter be connected, the drive output of this frequency converter is connected with the power input of take-up motor, the outgoing line side straining pulley 5 of draw drum, the rotating shaft of straining pulley 5 is in transmission connection by a transmission mechanism and a tension force potentiometer 6, and the signal output part of tension force potentiometer is connected with the control input end of DC speed regulation module.
The transmission mechanism of the present embodiment is rotate the tension force fork 14 be assemblied in a frame, and one end of this tension force fork is vertical with the rotating shaft of straining pulley 5 to be fixed together, and the other end and tension force potentiometer 6 are in transmission connection.Between the outgoing line side and straining pulley 5 of draw drum 1, be also provided with one determine runner 4, the top of straining pulley is provided with a line storage wheel 13 between straining pulley 5 and take-up.
In addition, the corresponding position below straining pulley when it hangs is provided with broken string limit switch 11, and this broken string limit switch is fixed on an installing rack 12.
Meter-measuring device comprises meter counter and the proximity switch 8 be located on one group of fabric wheel correspondence position and corresponding with proximity switch two induction point (not shown)s, responds to proximity switch 8 noncontact; Fabric wheel at least comprises upper fabric wheel 9 for making cable space spacing and lower fabric wheel 10, the proximity switch 8 of the present embodiment is located at after lower fabric wheel 10, and two induction points are symmetricly set in position relative with proximity switch on lower fabric wheel, improve the precision of metering (although induction point number is more, meters counting accuracy is higher, but also higher to the frequency requirement of proximity switch, consider, this enforcement is two induction points preferably).The upper fabric wheel of the present embodiment is two, and lower fabric wheel is one, and lower line ball position of wheel is fabric wheel lower middle position place on two, arranges three fabric wheels and does not allow line skid, also further increase meters counting accuracy.The signal output part of proximity switch 8 is connected with the signal input part CP1 (10,11, No. 12 pins) of meter counter, and the stopping control output end AL2 of meter counter is connected the stopping for controlling take-up motor with a metering shutdown switch 2A (as shown in Figure 3).This meter counter also has metering speed Control end AL1 (i.e. 6, No. 7 pins), and this metering speed Control end AL1 is connected with the multistage speed control end DI4 of frequency converter.
Be illustrated in figure 2 unwrapping wire and control electrical schematic diagram, as seen from the figure, unwrapping wire DC speed regulation module drives with unwrapping wire motor and is connected, and the power end of this module is connected with bus by contactor KM1, and bus is provided with air switch Q0; The signal input part of its+10V and-10V is connected with tension force potentiometer WD1, goes here and there between the adjustable side of tension force potentiometer and the GD of DC speed regulation module hold and be provided with the limit switch SL1 that breaks.
Be illustrated in figure 3 take-up and control electrical schematic diagram, as seen from the figure, the rotating shaft of take-up reel and take-up motor 1M control connection, take-up motor is connected with the control output end of frequency converter, and RST tri-ports of frequency converter are connected with the L1 ~ L3 of bus respectively.Bus is also connected with each controlling brancher, comprise rolling and start branch road, unwrapping wire startup branch road, rolling stopping branch road, meter counter branch road and rolling and unwrapping wire instruction branch road: rolling starts string on branch road and is provided with rotation toggle switch 1ST, foot switch S2 and a rolling stopping normally-closed contact K2 of contactor and the coil of rolling starting contactor K1, and foot switch is also parallel with a normally opened contact of rolling starting contactor K1, realize interlocking; In addition, one of them normally opened contact of rolling starting contactor K1 is also connected with its enable port DI1 of frequency converter and COM respectively; Unwrapping wire starts string on branch road and is provided with the coil of unwrapping wire starting contactor KM1 and rotates an interlock contact of toggle switch 1ST; Rolling stops string on branch road to be provided with the coil of metering shutdown switch 2A and rolling stopping contactor K2; On rolling instruction branch road, string is provided with corresponding indicator light 1H and a normally opened contact of rolling starting contactor K1; On unwrapping wire instruction branch road, string is provided with corresponding indicator light 2H and a normally opened contact of unwrapping wire starting contactor KM1.
The meter counter of the present embodiment adopts the rugged electronic counter in import east, has the setting of metering length, the display of metering length, the correction of metering length factor, metering automatic clear, two-part output control function, realizes complete machine operation.The collection of meter counter signal is with Autonic PR12-4DP import proximity switch, lower fabric wheel installs additional two induction points and removes inductive proximity switch, induction point herein adopts metal noncontact thing, makes proximity switch output signal feeding counter and carries out length counting; Measured the number of turns of corresponding fabric wheel rotation by proximity switch, thus calculate the length of cable, the metering result of acquisition is very accurate, substantially increases the reliability of metering.
When meter counter parameter is set, correct according to the length of inkjet printing on cable, metering length factor is carried out correct correction; In order to simplify the operation of meter counter, after meter counter display length, time delay 2 seconds, counting can automatically reset and be shown as zero, for counting next time is ready; Generally the output mode of meter counter is set as that P exports.
Operation principle of the present invention is as follows: actinobacillus device drives draw drum to carry out unwrapping wire by rare earth direct current machine, unwrapping wire motor is by DC speed regulation module speed regulating control, tension force potentiometer changes speed and the rotating commutation speed governing of unwrapping wire motor, tension force potentiometer leaves neutral point toward top offset, motor forward direction speed is accelerated, tension force potentiometer leaves neutral point toward bottom offset, and motor inverted speed is accelerated.Tension force potentiometer two terminations ± 10V, straining pulley 5 is when the intermediate equilibria position of frame, and the center tap voltage of tension force potentiometer 6 is zero, and at DC speed regulation module no-output voltage, unwrapping wire motor does not turn; Because of certain reason cause straining pulley 5 to depart from neutral point position time, take-up reel hauls cable, under the effect of tractive effort, straining pulley can up move always, when unwrapping wire motor speed does not catch up with rolling speed, tension force potentiometer centre cap output voltage can from null value → on the occasion of increasing gradually, the output voltage of DC speed regulation module is improved, and unwrapping wire motor speed is accelerated; If unwrapping wire motor speed is constantly accelerated, new change is there is in straining pulley under the effect of self gravitation, by a high position → neutral point → depart from neutral point position to move down, tension force potentiometer center tap voltage has on the occasion of the change of → zero → negative value, and unwrapping wire motor does retarded motion; Move down once straining pulley departs from neutral point position, unwrapping wire motor just reverses, too many for making not allow line storage wheel straining pulley depart from neutral point, enters to need to realize as much as possible the synchronous of unwrapping wire and rolling; If when cable discharges or occurs broken string situation, straining pulley hangs under gravity naturally, very fast bruising is firmly broken limit switch, and tension force potentiometer centre cap is disconnected, DC speed regulation module no-output voltage, unwrapping wire motor does not turn, and plays the effect of breaking protection.
It is mair motor that take-up drives take-up reel to carry out rolling by take-up motor 1M; utilize frequency converter as the speed regulator of take-up motor; frequency converter is set in multistage speed to run; ensure that the startup → stable operation → reduction of speed → stopped status of mair motor and the synchronous operation of unwrapping wire motor, improve the efficiency of rolling.Take-up adopts vector type MD320 Series Frequency Converter to drive take-up motor, for meeting technological requirement, increases work efficiency; The parameter of rolling frequency converter is rationally arranged, starts and adopt remote-control operation, do complete machine enabled instruction with foot switch; As long as step on foot switch take-up motor just can turn over automatically; The speeds control of take-up motor adopts 2 segmentations; 1st section is starting operation frequency; starting operation frequency values is set as fixed frequency (20Hz); 2nd section is reduction of speed frequency (8Hz); running frequency is switched to the shutdown of reduction of speed frequency and take-up, is completed by counter dual output signal controlling completely.Take-up motor running speed under running frequency is very fast; and mechanical aspects often has inertia factor when shutting down; take-up motor will be allowed at short notice to stop immediately; it is very impossible not occur sliding, and inevitable sliding speed can allow the physical length of covered wire cable increase, and the present invention adopts 2 sections of speed to run; achieve the reduction of speed running when metering closes on of take-up motor; can stop at once after ensureing take-up motor stopping, rolling is without sliding, and metering is accurate.
The course of work of the present invention is as follows: rotate toggle switch 1ST, the KM1 adhesive of unwrapping wire starting contactor can be provided simultaneously and meet rolling entry condition, step on foot switch S2, contactor K1 adhesive, even if pin leaves foot switch, have the latching point of K1, make contactor K1 adhesive always, the indicator light of rolling is simultaneously bright; The normally opened contact of K1 connects sub-COM and DI1 of inverter input, realizes frequency converter and starts with running frequency (20Hz), the rotation of transducer drive take-up motor; Only when metering is to number, metering shutdown switch 2A closes, contactor K2 adhesive, and the normally-closed contact of contactor K2 disconnects, contactor K1 power-off, and take-up motor stops; Again step on foot switch S2, carry out periodic duty by above-mentioned logic.Control the control power supply of rolling and actinobacillus device operation startup with toggle switch 1ST, once there are abnormal conditions, rotate toggle switch and accomplish that complete machine is shut down at once.
If the cable of segmentation 100 meters of length, as long as be set as 95 meters by the 1st of meter counter the section, when counting down to 95 meters, 6,7 pin of meter counter export 1 signal, this signal is delivered on sub-COM and DI4 of inverter input, realizes frequency converter the 2nd section of fast switching, and the 2nd section is reduction of speed frequency (8Hz), take-up motor speed reduces, for meter counter is ready to take-up reel can be allowed during number to stop at once; Under many speed is run, count down to 100 meters, 4,5 pin of meter counter export 1 signal, make contactor K2 adhesive, and the normally-closed contact of contactor K2 disconnects, contactor K1 power-off, and take-up motor stops, and realizes the accurate of metering length.