CN203109342U

CN203109342U - Position control device for steel rolling finishing shear line

Info

Publication number: CN203109342U
Application number: CN 201220740272
Authority: CN
Inventors: 朱书成; 吕鹏飞; 黄国强; 屠洪选; 康文举
Original assignee: Nanyang Hanye Special Steel Co Ltd
Current assignee: Nanyang Hanye Special Steel Co Ltd
Priority date: 2012-12-30
Filing date: 2012-12-30
Publication date: 2013-08-07
Anticipated expiration: 2022-12-30

Abstract

The utility model discloses a position control device for a steel rolling finishing shear line, which comprises a spindle positioning detection device, fixing side-moving side motors, a pulse coder, a direct current speed adjusting device and a driving device for motor spindle positioning detection devices, and also comprises a PLC (programmable logic controller) system and two fixing side-moving side motor crankshaft main command switches which are arranged on a crankshaft cam and are respectively used for detecting the signals of the respective motors at four positions of stopping, speeding, position loop switching and speed reducing; and the signals of the crankshaft main command switches are output to the PLC system to ensure shear edges at a fixing side and a moving side to be synchronous, thus ensuring the shearing quality of a steel plate, reducing spare consumption and reducing the producing cost of steel per ton.

Description

A kind of steel rolling finishing cutting line position control device

Technical field

The utility model relates to the finishing processing device of steel plate, relates in particular to a kind of steel rolling finishing cutting line position control device.

Background technology

The finishing shear line is used for the finished machined of various steel plates, has that scale is cut, the bilateral scissors dual mode, and bilateral scissors are mainly used in the side cut of steel plate, guarantees to guarantee shear precision to greatest extent under the prerequisite of customer demand.Its cutting mechanism mainly contains fixation side and mobile side composition, and both sides drive flywheel after being slowed down through reductor by driving motor respectively, utilizes the cutting edge of the mechanical energy drive band gradient of flywheel to finish steel plate shearing.The both sides cutting edge must be synchronous in electric realization, and the flywheel mechanism of just controlling both sides drives the angle that cutting edge passes by in the identical time must be consistent, and the stop of final cutting edge highly must be consistent, could guarantee that its shear precision controls at 2mm ~ 4mm.

The cutting edge control system is before introducing position closed loop control, rely on the speed ring in the transmission device to realize synchronously fully, its weak point is that there is certain error in closed loop speed control system, error can not be eliminated automatically and cause cumulative errors, this error amount is more big, and the synchronous effect of cutting edge control system is just more poor, finally causes shear precision to exceed standard or the serious consequence of damage equipment, spare part infringement probability is increased, and ton steel production cost is higher.

Summary of the invention

The purpose of this utility model provides a kind of steel rolling finishing cutting line position control device, thereby can guarantee quality of steel plates.

The utility model adopts following technical proposals: a kind of steel rolling finishing cutting line position control device, comprise the main shaft locating and detecting device, the motor of fixation side and mobile side, pulse coder, direct current speeder, electric machine main shaft locating and detecting device transmission device, also has the PLC control system, the motor bent axle control switch that also includes fixation side and mobile side (is two control switches, this bilateral scissors both sides cutting edge control does not have synchronizing shaft, relying on motor synchronous fully is to receive) control switch is arranged on the bent axle cam, described two bent axle control switches are used for detecting separately respectively, and motor is stopping, accelerate, position ring comes into operation and four position signallings that slow down, and the signal of bent axle control switch is exported to the PLC control system.

The utility model is in order to solve the asynchronous problem that cumulative errors cause, the Position Control ring is introduced in the shearing control system, utilize the pulse of pulse coder and the high-speed data computing function of PLC, all the time the cutting edge alternate position spike distance that compares principal and subordinate's driven by motor, in time correct site error by the signal that the master controller of installing on the bent axle cam sends, guarantee that fixation side cutting edge and mobile side cutting edge are synchronous, thereby guarantee quality of steel plates, reduce spare parts consumption, reduce ton steel production cost.

Description of drawings

Fig. 1 is schematic block circuit diagram of the present utility model.

Fig. 2 is four position views of motor bent axle.

The specific embodiment

As shown in Figure 1, a kind of steel rolling finishing of the utility model cutting line position control device, (comprise the main shaft locating and detecting device in prior art, the motor of fixation side and mobile side, pulse coder, direct current speeder, electric machine main shaft locating and detecting device transmission device, also have the PLC control system) the basis on, increased the motor bent axle control switch of fixation side and mobile side, two control switches are arranged on the bent axle cam, described two bent axle control switches are used for detecting separately respectively, and motor is stopping, accelerate, position ring comes into operation and four position signallings that slow down, and the signal of bent axle control switch is exported to the PLC control system.

The utility model does not change original control system, the pulse coder that still utilizes existing two 320KW direct current generators and motor to carry, two 6RA70_C direct current speeders, increase the bent axle control switch, be implemented in electric motor starting, accelerate, position ring comes into operation and the signal triggering of four diverse locations that slow down, the PLC system takes out the encoder data that original direct current speeder is used for speed ring simultaneously, utilize the supercomputing function, the differential seat angle that turns at four some comparison bent axles respectively, by converting differential seat angle being converted to additional given speed passes to from device, reach and adjust at any time from device given speed value, all the time follow the position of the cutting edge that main device drags, eliminate the purpose of cumulative errors, realize the synchronous fully of fixation side and mobile side cutting edge, guarantee shearing quality.

The bent axle control switch realize motor stop, acceleration, position ring comes into operation and the signal triggering of four diverse locations that slow down, the concrete condition of four positions is as shown in Figure 2: during the a-quadrant, direct current speeder reads by encoder and passes the position signalling of coming, and compare with setting, send the halt instruction shutdown after arriving setting value, after PLC receives the signal that the bent axle control switch sends, from direct current speeder, read the alternate position spike of master and slave device driving apparatus, by calculating, change out the acceptable signal of arrangements for speed regulation, realize the error correction of stop position; Position B is the acceleration position of transmission device, simultaneously when this position, PLC reads the alternate position spike of master and slave device driving apparatus for the first time from direct current speeder, by calculating, change out the speed of symbol, it is given from device, realize crank position error correction for the first time, wave effect in position A ~ position C process medium velocity environment-development; Position C is the position ring position of coming into operation, and PLC is with position memory register zero clearing when this position, and position ring begins to put into operation, and PLC reads position deviation simultaneously, realizes crank position error correction for the second time; Position D is direct current speeder deceleration position, and direct current speeder begins to send deceleration instruction after detecting this position signalling, and equipment slows down according to pre-set velocity, and PLC reads position deviation simultaneously, realizes crank position error correction for the third time.

Claims

1. steel rolling finishing cutting line position control device, comprise the main shaft locating and detecting device, the motor of fixation side and mobile side, pulse coder, direct current speeder, electric machine main shaft locating and detecting device transmission device, also has the PLC control system, it is characterized in that: the motor bent axle control switch that also includes fixation side and mobile side, two control switches are arranged on the bent axle cam, described two bent axle control switches are used for detecting separately respectively, and motor is stopping, accelerate, position ring comes into operation and four position signallings that slow down, and the signal of bent axle control switch is exported to the PLC control system.