CN201455401U - Oscillating measuring device for flying shears - Google Patents

Abstract

The utility model relates to an oscillating flying shear measuring device for steel plate shearing. The device comprises a measuring device, a length-measuring detection encoder, a PLC program controller, a subsidiary roller and a flying shear frame, and further comprises a connecting rod, a compression shaft and an electromagnetic valve, wherein, the connecting rod, the compression shaft and the electromagnetic valve are connected with a compression cylinder; the measuring device comprises a measuring roller, a bearing, a coupler, a bracket and an adjusting bracket; the measuring roller is connected with the bracket through a bearing support; the bracket is fixed with the adjusting bracket; the length-measuring detection controlling encoder is connected with the measuring roller through the coupler; one end of the compression shaft is connected with the adjusting bracket, and the other end thereof is connected with the connecting rod; the measuring device is connected with the flying shear frame; and the measuring roller is in interference fit with the subsidiary roller. The utility model has the beneficial effects that the quality defects of a conventional flying shear measuring device that the flatness of a steel plate is poor, and indentation, scratch, oil stain and the like on the surface of the steel plate are caused by shearing stop are overcome; the appearance quality of the steel plate is greatly improved; and the production cost is far less than that of like products in the world, and is a quarter that of foreign imported equipment.

Description

Swing type flying shearing machine measurement mechanism

Technical field

The utility model relates to a kind of metal material processing equipment, particularly a kind of swing type flying shearing machine measurement mechanism that is used for steel plate shearing.

Background technology

The swing type flying shear is the nineties in last century, the new technology that is used for steel plate shearing that developed countries is released, capital equipment is by uncoiler, guide roller, crop shears, arbor press, feeding roller, measuring roller, flying shear, belt conveyer, sheet piler platform is formed a production line, flying shear is crucial in this technology, because its machining accuracy requirement, particularly the requirement of control technology is than higher, present this kind equipment poor stability of domestic production, occur stopping cutting phenomenon constantly at the shearing steel plate, cause the steel surface of shearing to have impression, cut, quality defects such as oil stain.

Summary of the invention

In view of the problem that prior art exists, the measurement mechanism structure has been carried out from new design, provide a kind of swing type flying shearing machine measurement mechanism, thereby crudy and speed have reached Expected Results fully.

The utility model for achieving the above object, the technical scheme of being taked is: a kind of swing type flying shearing machine measurement mechanism, comprise measurement mechanism, the long encoder that detects of meter, the PLC cyclelog, help roll and flying shearing machine support, it is characterized in that: also comprise the connecting rod that is connected with clamping cylinder, compression axis and magnetic valve, described measurement mechanism comprises measuring roller, bearing, shaft joint, support and adjustment rack, described measuring roller is connected with support by bearing, described support and adjustment rack are fixed, the long controlled encoder that detects of described meter is connected with measuring roller by shaft joint, described compression axis one end is connected with adjustment rack, the other end is connected with connecting rod, measurement mechanism is connected with the flying shearing machine support, described measuring roller and help roll interference fit; Circuit is connected to: described PLC cyclelog is connected with magnetic valve, the long controlled encoder that detects of meter respectively; Gas circuit is connected to: magnetic valve is connected with source of the gas and clamping cylinder by tube connector respectively.

The beneficial effects of the utility model are: crudy and speed have reached Expected Results fully.Overcome in the past because of stopping cutting the steel plate flatness that causes, and quality defect such as surface indentation, cut, oil stain, the steel plate apparent mass greatly improves; Its cost of manufacture is 1/4th of an import equipment price also well below world's like product.

Description of drawings

Fig. 1 is the utility model structural representation and as Figure of abstract.

Fig. 2 is a vertical view of the present utility model.

Fig. 3 is that flying shear control system and relevant device constitute schematic diagram.

Fig. 4 is the clipped position schematic diagram.

Fig. 5 is a upper scissor blade movement locus schematic diagram.

Fig. 6 is a flow chart of the present utility model.

Fig. 7 is a pendulum shear machine structural representation.

The specific embodiment

As Fig. 1,2,3, shown in 7, swing type flying shearing machine measurement mechanism, comprise the long encoder 7 that detects of meter, the PLC cyclelog, help roll 8 and the connecting plate 10 that fixes with flying shearing machine support 9, described help roll 8 fixes by bearing block 11 and connecting plate 10, also comprise measurement mechanism 1, be connected with the clamping cylinder 2 of connecting rod 3, compression axis 4 and magnetic valve 6, described measurement mechanism 1 comprises measuring roller 1-1, bearing 1-2, shaft joint 1-3, support 1-4 and adjustment rack 1-5, measuring roller 1-1 is connected with support 1-4 by bearing 1-2, support 1-4 fixes by bolt and adjustment rack 1-5, adjustment rack 1-5 is fixed on the support 9, the long controlled encoder 7 that detects of meter is connected with measuring roller 1-1 by shaft joint 1-3, clamping cylinder 2 is fixed on the support 9, be connected cylinder head 2-1 is connected with an end of compression axis 4 by connecting rod 3 with clamping cylinder 2, compression axis 4 is fixed on the frame 12 that is connected with support 9 by two bracing struts 5, compression axis 4 other ends are connected measuring roller 1-1 and help roll 8 interference fit by jackscrew with adjustment support 1-5 locking; Circuit is connected to: the PLC cyclelog is installed in the switch board, and magnetic valve 6 is installed on the support 9, and the PLC cyclelog is connected with magnetic valve 6, the long controlled encoder 7 that detects of meter respectively; Gas circuit is connected to: two mouths of magnetic valve 6 one ends connect source of the gas, and two mouths of its other end are connected with clamping cylinder 2 by tube connector.

Flying shear is crucial in this technology, and it carries out high-precision shearing with the scale on request of the band in the translation under the situation that the speed that guarantees cutting edge and machine row miscellaneous equipment and band cooperates synchronously.Be the rapidity of assurance system works, but all DC driven unit are all selected the total digital DC control device of four-quadrant operation for use.Rotary flying shear whenever revolves to turn around to finish once to be sheared, the band length information that the long detection of measuring roller meter encoder provides feeding roller to send, the cutting edge position coder is located automatically, adopt the speed of "----approached in the two-position, and speed is synchronous " control mode control flying shear blade accelerating sections, make when cutting edge enters interlock, the band length of passing through just in time is the sheet material scale that needs, just in time the speed with band is equal for the horizontal velocity component of cutting edge simultaneously, after shearing is finished synchronously, slow down according to " expectation retardation method at zero point " control flying shear, and be parked in top dead centre exactly (during high speed shear weak point scale sheet material, flying shear can switch to acceleration from deceleration at suitable switching point, continue to shear next time), thus cutting to length accurately finished one time.

Compounding technique scheme concrete measure is: the first, as shown in Figure 4, determine that rational clipped position is the important evidence of swing type flying shear mechanism design.By the foreign data introduction, and to the analysis of existing equipment.Consider the speed of shearing, in the time of simultaneously also will guaranteeing to shear rocking fly shears steadily and the problems such as position that stop after once shearing of the speed after shearing and finishing done a large amount of calculating, determine that swing bent axle 13 becomes position, 60 ° of angles with level be the optimum position.

When the motor minimum speed, the linear velocity of support body shearing place

$V_1=\frac{625\×2\×3.14\×35\×7.5\×\sin 60}{60\×31}=0.48m/s$

When the motor maximal rate, the linear velocity of support body shearing place

$V_1=\frac{1400\×2\×3.14\×35\×7.5\×\sin 30}{60\×31}=1.07m/s$

Above velocity interval 0.48-1.07m/s satisfies manufacturing technique requirent, finish shearing according to swing bent axle 13 direction of rotation simultaneously after, support body shearing place speed constantly increases, and can not cause the impact to rocking fly shears.

Second, the shear history of flying shear mainly is along the rectilinear motion of machine column direction and the circular motion of cutting edge with steel band, good by the technological requirement cooperation, owing to adopt the speed of the high total digital DC device controller row of control accuracy, so in shear history, mainly be the motion of control cutting edge. Fig. 5 is that the movement locus schematic diagram .X of cutting edge is a top dead centre, the Y point is the biting point, the XY segmental arc is the accelerating sections of cutting edge, read in the meter long pulse strokes per minute of measuring roller at the Y point, simultaneously the cutting edge pulse is counted with counting the long pulse counter O reset and restarting, prepared for shearing next; The YZ segmental arc is a sync section, and at this moment cutting edge velocity component and machine row speed (window of web velocities just) in the horizontal direction is consistent, and guarantees the quality of shearing area, does not scratch the surface of band; The ZX segmental arc is a braking section. the shearing of the long scale of centering, cutting edge can be stopped at top dead centre X point and be waited for that the shearing to short scale need change acceleration mode over to reposefully from deceleration regime.

Three, program structure as shown in Figure 6, the control program of S7-200CN in the crosscut unit electric control system mainly is divided into five parts: initialization, logic control, flying shear control, interrupt control and set showing.Set the display part and finish, and carry out exchanges data by S7-300PLC and S7-200CN by the TP270 in the master operating station.

Four, interrupt routine mainly is a response cutting edge when arriving up and down the blade biting point, and high-speed counter triggers host CPU and interrupts according to default location interrupting value.Interrupt routine reads in the instantaneous value of the long detection of measuring roller meter encoder, and cutting edge P-pulse counter and the long encoder that detects of meter are resetted, and while accelerating sections sign resets, the sync section flag set.From the Y point, cutting edge speed keeps and machine row speed equates, band is sheared, when cutting edge arrives the Z point, flying shear enters braking section, the rate pattern of its braking section is: in cutting edge speed=2 β (Co-Bj) formula, β is that cutting edge subtracts acceleration, Co is the umber of pulse of braking section segmental arc, and Bj is that relative Z point is the cutting edge position feedback umber of pulse at zero point, and when cutting edge when the zero velocity point X point of expectation moves, (Co-Bj) go to zero gradually, then cutting edge speed also goes to zero gradually, and when arriving the X point, cutting edge speed just in time equals zero.Here it is " expectation retardation method at zero point ".

Conveying roller system send plate continuously by the given linear velocity of operating personnel.Measuring roller then feedback data is given S7-200CN.Tool rest is pressed up and down

Requirement shuttling movement under PLC control uninterruptedly shear steel plate.Realize the needs of continuous horizontal shear-steel plate thus.

The characteristics of this technology are: when the first, the steel plate straight line parallel was fed forward continuously, cutting edge was perpendicular up and down by the uninterrupted steel plate of shearing of scale requirement.Efficient was stopped to cut greatly more in the past and was improved, and the unit interval shearing displacement is five times that stop cutting.The second, owing to do not stop cutting, overcome and stop to cut the flatness that causes in the past, and quality defects such as surface indentation, cut, oil stain, the steel plate apparent mass greatly improves.Three, under the PLC Digital Control, length, the diagonal equidimension precision of being sheared steel plate are ± 0.15, than stop cutting ± 1.0 exceed a lot.The long encoder model that detects of meter is: 20000PPR

Operation principle: preseting length data in touch-screen at first, these data will feed back in the controller, measuring roller and feeding roller device are by system controller and flying shear coordination, the band material passes measuring roller and pinch roll, speed measuring coder is housed on measuring roller, feed length is fed back to controller, with the control motor speed, guarantee cut lengths accurately, flying shear master motor is pressed the main motor of system controller instruction startup and is rotated by flying shear reduction box input cutter shaft driving crank, encoder on the crank detects the position of cutting edge at any time, the control crank rolling velocity, guarantee the cut lengths of shearing, guarantee simultaneously last, lower scissor blade overlaps the horizontal movement speed in district and is with material speed synchronous.

As shown in Figure 7, the band process tests the speed and clamping and conveying device instructs material by computer control, material is sent into flying shear, flying shear master motor starts main motor by computer instruction and drives the crank rotation by flying shear reduction box power shaft, and the upper and lower scissors that is installed on the crank moves, shears when upper and lower cutting edge overlaps along guide pillar is upper and lower.When upper and lower cutting edge touches band, be contained in and send shear signal one time near switch on the crankshaft, the last shearing of expression finished, and this time shears beginning.Be contained in photoelectric encoder on the crank axle and detect the position of cutting edge at any time, the control crank rolling velocity guarantees the cut lengths sheared, and it is synchronous to guarantee to overlap horizontal movement speed and the window of web velocities distinguished at last lower scissor blade simultaneously.

Claims (1)

1. swing type flying shearing machine measurement mechanism, comprise measurement mechanism (1), the long encoder (7) that detects of meter, the PLC cyclelog, help roll (8) and flying shearing machine support (9), it is characterized in that: also comprise the connecting rod (3) that is connected with clamping cylinder (2), compression axis (4) and magnetic valve (6), described measurement mechanism (1) comprises measuring roller (1-1), bearing (1-2), shaft joint (1-3), support (1-4) and adjustment rack (1-5), described measuring roller (1-1) is connected with support (1-4) by bearing (1-2), described support (1-4) is fixing with adjustment rack (1-5), the long controlled encoder (7) that detects of described meter is connected with measuring roller (1-1) by shaft joint (1-3), described compression axis (4) one ends are connected with adjustment rack (1-5), the other end is connected with connecting rod (3), measurement mechanism (1) is connected with flying shearing machine support (9), described measuring roller (1-1) and help roll (8) interference fit; Circuit is connected to: described PLC cyclelog is connected with magnetic valve (6), the long controlled encoder (7) that detects of meter respectively; Gas circuit is connected to: magnetic valve (6) is connected with source of the gas and clamping cylinder (2) by tube connector respectively.

Images