KR100905112B1 - Apparatus for controling the steel strip to detect strip-shape - Google Patents

Abstract

The present invention relates to a strip control device for online shape inspection, and more particularly, to a strip control device for online inspection of wave height and wavelength of strip wave of the final product of the rolling process continuous line. It relates to a plate plate (4-1) is installed so as to be movable up and down on the lower surface of the strip (S) that is passed between the winder (1) and the tension bridle roll (8), and the upper and lower portions thereof A strip shape inspection means (4) comprising a strip pressing plate (4-8) fixed to be movable and a plurality of proximity sensors (4-4) embedded in an upper surface of the surface plate (4-1); The upper rotary roll 10-7 is fixed to the upper portion of the lower roll (7) installed on the exit side of the strip shape inspection means (4) and the shaft of the universal joint (10-3) on its rotation axis A strip support means (10) comprising a support roll driving motor (10-1) to be coupled thereto; On-line characterized in that it is composed of a drive motor control unit 40, an automatic deceleration control unit 201 and a tension relief control unit 202, strip support means control unit 207 is connected to the electrical signal to control each of the devices described above. Provides a strip control device for shape inspection.

Strip, shape inspection, surface plate, strip shape inspection means, strip support means

Description

Strip control for online contour inspection {APPARATUS FOR CONTROLING THE STEEL STRIP TO DETECT STRIP-SHAPE}

1 is a flow chart of a control embodiment of a conventional online geometry inspection strip;

2 is an overall configuration diagram of a strip control apparatus for on-line shape inspection according to the present invention;

3 is a perspective view of strip shape inspection means constituting a strip control apparatus for on-line shape inspection according to the present invention;

4 is a perspective view of a strip supporting means constituting a strip control apparatus for on-line shape inspection according to the present invention;

5 is a flowchart of an embodiment to which a strip control apparatus for on-line shape inspection according to the present invention is applied;

6 is a flowchart of an automatic deceleration control unit constituting a strip control apparatus for on-line shape inspection according to the present invention;

7 is a flowchart of a tension removing control unit constituting a strip control apparatus for on-line shape inspection according to the present invention;

8 is a flowchart of a strip support means control unit constituting a strip control apparatus for on-line shape inspection according to the present invention.                 

♣ Explanation of symbols for main part of drawing ♣

1: Winding machine 2: Tension blade roll # 8 3: Tension detector 7: Lower roll

4: Strip shape inspection means 4-1: Place plate 4-8: Crimp plate

5: Distance measurement sensor 6: Welding point detection sensor 10: Strip support means

10-7: upper rotary roll 20: input monitor 40: drive motor control unit

200: signal input unit 201: automatic deceleration control unit 202: tension removal control unit

207: strip support means control unit

The present invention relates to a strip control device for online shape inspection, and more particularly, to a strip control device for online inspection of wave height and wavelength of strip wave of the final product of the rolling process continuous line. It is about.

More specifically, after the automatic deceleration control at a predetermined position during online operation, the tension applied to the strip is removed by controlling the distance and tension, and the strip flatness on the surface plate is increased by the control of the strip support roll for more rapid and The present invention relates to a strip control device for on-line profile inspection, which allows the strip intermediate profile inspection to be safely performed.

In general, the final product shape inspection of the continuous rolling process line is carried out on-line shape inspection that allows a predetermined position shape inspection over the entire length of the strip during the online operation in accordance with the strict quality standards of the demand.

In the conventional strip control method for online strip shape inspection, as shown in FIG. 1, the production line is manually stopped (100) and tensioned off (off) according to the shape inspection needs of the driver, and then strip shape inspection. For this, select the leading group of the surface plate, which is a smooth metal plate, smoothly trimmed for driving (tension bridle roll No. 8 in the winder) and repeat the reverse 101 operation by 30mpm (meter per minute) manually. If it is determined that the strip is in close contact, the reverse stops (102).

When the reverse operation of the strip is stopped 102 as described above, by manually operating the air valve of the cylinder for operating the surface plate to raise the surface plate to perform the shape inspection of the strip, such as the wave wavelength and crest of the strip,

When the shape inspection of the strip is completed as described above, the raised table is lowered (015), the equipment is manually operated to give tension to the strip to remove the strip loop, and then the production line is operated.

However, in the control method of the conventional online shape inspection strip as described above, as shown in Fig. 2, the strip requiring shape inspection on the surface plate 4 for strip shape inspection is not stopped at a predetermined position (i.e. , The stop position defect occurs due to the high-speed feeding of the strip)

In addition, the winding motor 1 reverses the driving motor of the tension bridle roll 2 to remove the strip tension on the upper surface of the upper plate 4, and closes the surface of the surface plate 4 and the strip. ,                         

As the repetitive manual operation is repeated while checking the close contact with the surface plate (4), the temporary excessive tension change causes the tension detector of the preceding part and the breakage of the base of the roll, etc. The strip is struck between the lower roll (7) to cause a production failure that delays the shape inspection due to the poor adhesion of the surface plate 4 and the strip.

As a means for solving the above problems, a strip shape measuring apparatus is disclosed in the Republic of Korea Patent Application No. 1996-48025, which stops the movable line in a position that requires online shape inspection using a strip loop using a cylinder It is a technical point of view to raise, to enter the surface plate to which the movable part is added, and then to lower the cylinder so that the strip is seated on the surface plate.

However, the following problem occurs in the method of measuring the strip shape in the above manner.

First, production line stop factors are increasing due to the time delay caused by the plate movement time for strip shape inspection.

Second, excessive space is needed in the width direction of the process line to cope with the movement of the surface plate.

Third, as the surface plate moves to the lower surface of the strip, the flatness of the surface plate due to repetitive motion becomes poor, thereby increasing the defective rate of the inspected strip shape.

Fourth, there are a number of problems, such as the risk that the surface plate may collide according to the strip loop amount when the strip enters the surface plate.

In order to solve the above problems, the present invention is an online shape inspection that allows a predetermined position shape inspection over the entire length of the strip during the online operation, the defects such as equipment damage and inspection delay, which may occur when the strip control It is an object of the present invention to provide a strip control device for on-line configuration inspection that minimizes the production failure and decrease in the hit rate of the designated position by preventing the damage.

In order to achieve the above object, the present invention is the distance between the distance measuring sensor 5 and the welding point detection sensor 6 and the winding machine (1) and the tension bridle roll (8) installed in the inlet of the strip winding line Plate plate 4-1 is installed to be movable up and down on the lower surface of the strip (S) through the plate, strip pressing plate (4-8) is fixed to be movable up and down on the upper plate, and the plate plate (4) Strip shape inspection means (4) consisting of a plurality of proximity sensors (4-4) embedded in the upper surface of -1);

The upper rotary roll 10-7 is fixed to the upper portion of the lower roll (7) installed on the exit side of the strip shape inspection means (4) and the shaft of the universal joint (10-3) on its rotation axis A strip support means (10) comprising a support roll driving motor (10-1) to be coupled thereto;

A drive motor controller 40 for controlling the drive motor of the support roll driving motor 10-1, the winding machine 1, and the tension bridle 8 of the strip support means 10 and the roll 2;

An automatic deceleration control unit 201 which receives a signal from the distance measuring sensor 5 and the welding point detection sensor 6 and transmits the signal to the driving motor control unit 40;                     

Tension removal for raising and lowering the platen plate 4-1 by receiving a signal from the automatic deceleration control unit 201, the winding machine 1, and the tension detector 3 installed at the lower part of the bridle roll 8. A control unit 202;

The upper rotary roll 10-7 and the strip pressing plate 4-8 are received by receiving signals from the proximity sensor 4-4 and the tension detector 3 embedded in the surface plate 4-1. It provides a strip control device for on-line shape inspection, characterized in that consisting of the lifting and lowering strip support means control unit 207.

In addition, the present invention is fixed to the center lower surface of the cylinder support frame (4-7) in which the strip pressing plate (4-8) constituting the strip shape inspection means (4) is fixed to the surface plate (4-1) It provides a strip control device for on-line shape inspection, characterized in that the lifting and lowering by the strip pressing cylinder (4-9),

In addition, the present invention provides a strip control device for on-line shape inspection, characterized in that the urethane pad (4-6) is attached to the lower surface of the strip pressing plate (4-8) in contact with the strip (S). .

In addition, the present invention is a pair of roll drive is fixed to the main frame (10-5) is fixed to the upper rotary roll (10-7) constituting the strip support means 10 on both sides of the lower roll (7) It provides a strip control device for on-line shape inspection, characterized in that the rotating shaft is coupled to the cylinder (10-4) by the shaft.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.

2 is an overall configuration diagram of a strip control apparatus for online shape inspection according to the present invention, Figure 3 is a perspective view of the strip shape inspection means constituting the strip control apparatus for online shape inspection according to the present invention, Figure 4 A perspective view of a strip support means constituting a strip control apparatus for on-line shape inspection according to the present invention.

As shown in FIG. 2, the strip control apparatus for on-line shape inspection according to the present invention receives the position and the test signal of the strip shape inspection necessary position from the signal input unit 200 through an operation monitor 20. To the deceleration control unit 201,

When the automatic deceleration control unit 201 detects the welding spot by the welding spot detection sensor 6 of the strip S, the automatic deceleration control is performed according to the counter value of the distance measuring sensor 5 to request the shape inspection of the strip S. A point is commanded to the drive motor control unit 40 to stop at the top of the strip shape inspection means 4 to control each drive motor of the continuous line.

In addition, the tension removing control unit 202 constituting the present invention receives the stop completion signal from the automatic deceleration control unit 201 and tensions according to the diameter of the winding coil of the winder (1) and the detected value of the tension detector (3). By performing the removal control to command the drive motor control unit 40 so that the strip tension test means (4) strip tension smoothly serves to reverse control the drive motor of the preceding group,

The strip support means control unit 207 constituting the present invention receives the strip plate adhesion failure signal from the tension elimination control unit 202 and the stripped strip between the 8th tension bridal roll 2 and the lower roll 7 ( S) is commanded to the drive motor controller 40 so that the strip S is in close contact with the strip shape inspection means 4 through the control of the strip support means 10, and the support roll drive motor 10 of the strip support means 10 is controlled. -1) to reverse control.

In addition, in the strip shape inspection means 4, the air valve 4-2 is connected to each plate driving cylinder 4-3 by a hose, and the plate driving cylinder 4-3 is a plate having excellent flatness. It is coupled to the pin (4-5) through the plate (4-1) and the connecting arm (4-12), the upper surface of the surface plate (4-1) is a hole is machined a plurality of proximity sensors therein ( 4-4) is installed,

The cylinder support frame (4-7) is fixed to the upper portion of the surface plate (4-1), the strip pressing cylinder (4-9) is fixed to the lower horizontal surface of the cylinder support frame (4-7),

The square compression plate 4-8 is fastened to the working shaft of the strip pressing cylinder 4-9 so as to face the surface plate 4-1.

The urethane pad 4-6 is attached to the lower surface of the pressing plate 4-8 so that a defect does not occur when contacting the strip S.

In the strip shape inspection means 4 having the above-described configuration, the air valve 4-2 raises the platen driving cylinder 4-3 in response to the signal of the tension removing control unit 202, and when the shape inspection is completed. Lower the platen driving cylinder (4-3).

In addition, the strip crimping cylinder valve 4-10 receives the signal of the tension elimination control unit 202 and lowers the strip crimping cylinder 4-9 in order to prevent detection failure due to the strip shape, and the pressure detector 4-11. ), If there is no signal from the proximity sensor 4-4 built in the plate plate 4-1 within a predetermined pressure setting range (for example, 5 kg / cm2), the strip crimping cylinder 4-9 ) Is raised, and the flat adhesion failure signal of the strip S is transmitted to the strip support means control unit 207 to control the strip support means 10.

In addition, in the strip support means 10, the support roll driving motor 10-1 is an upper rotary roll 10-7 by using a universal joint 10-3 and a coupling that can be vertically actuated. ), The roll drive cylinder 10-4 installed on the main frame 10-5 is coupled to the rotary shaft of the upper rotary roll 10-7 by the coupling coupling 10-6, and the air valve 10 -2) is a configuration connected to each of the roll drive cylinder (10-4) by a hose.

In such a configuration, the air valve 10-2 is opened by the instruction of the strip support means control unit 207, the roll drive cylinder 10-4 is lowered, and the reverse drive of the support roll drive motor 10-1. By the control is made, the upper rotary roll 10-7 is reversed.

Hereinafter, the operation of the present invention will be described in detail through the accompanying flowchart.

5 is a flowchart of an embodiment to which the strip control apparatus for online shape inspection according to the present invention is applied, and FIG. 6 is a flowchart of an automatic deceleration control unit constituting the strip control apparatus for online shape inspection according to the present invention. 7 is a flowchart of the tension removing control unit constituting the strip control apparatus for the online shape inspection according to the present invention, Figure 8 is a flowchart of the strip support means control unit constituting the strip control apparatus for the online shape inspection according to the present invention to be.

As shown in Figure 5, by applying the strip control device for the online shape inspection according to the present invention, first receiving an external signal (shape inspection signal, inspection position) (200), and then the automatic deceleration control 201 When the shape inspection request point of the strip S is stopped at the top of the strip shape inspection means 4, the tension removal control 202 is performed to remove the tension of the strip.

When the tension applied to the strip is removed as described above, the plate plate 4-1 of the strip shape inspection means 4 is raised 203, and the strip is in flat contact state 204 with the plate plate 4-1. When the shape is checked (205).

If the strip is adhered to the platen plate 4-1 in a bad state of flat adhesion, the strip supporting means is controlled to supply the strip to the platen plate 4-1, and the strip is placed on the platen plate 4-1. ) In a good flat contact state to raise the upper rotary roll (10-7) of the strip support means (10).

After the strip shape inspection is performed in the same manner as described above (205), and when the shape inspection completion signal is received, the plate plate 4-1 of the strip shape inspection means 4 is lowered, and the tension is applied to the strip again to form a strip loop. After the strip loop is removed, the production line is restarted.

6 is a flowchart of an embodiment of the automatic deceleration control unit constituting the present invention, in which a mode on signal for performing a shape inspection of a strip is first received (201-1), and a test position setting value is received (201-1). 2) When the welding spot detection signal of the welding spot detection sensor 6 is transmitted 201-3, the measured value of the distance measuring sensor 5 is integrated 201-4.

When the measured value of the distance measuring sensor 5 is integrated (201-4), the deceleration start position calculation (inspection position-about 30m) is performed (201-5), and the deceleration start comparison determination (measurement integration value> deceleration start) Location (201-6),

If the measurement integrated value, which is the value determined by the deceleration start comparison, is larger than the deceleration start position, decelerate by outputting the deceleration signal (30mpm), and if the measurement integrated value, which is the value determined by the deceleration start comparison value, is smaller than the deceleration start position, perform the deceleration start position calculation again (201). -5)

When the deceleration signal is output (30mpm) to decelerate, the stop position is compared (201-8-8), and if the measurement integrated value is greater than the inspection position, the line is stopped and the speed feedback is verified and the stop signal is tensioned. After transmission to the removal control unit 202, the tension is turned off.

7 is a flowchart of the operation of the tension removing control unit 202 constituting the present invention. First, a stop signal is received from the automatic deceleration control unit 201 (202-1), and the surface plate preceding group (tension number 8 in the winding machine) is shown. After the drive motor of the bridal roll) is reversed 202-2 at a speed of 15mpm, the reverse speed is determined through the amount of loosening of the winding coil of the winder 1 (202-3), and the reverse distance is larger than 1m. In this case, the preceding group motor is reversed and decelerated (202-4) to 10mpm, and when the reverse distance is smaller than 1m, the preceding group drive motor is further reversed (202-2).

When the speed of the preceding group motor is reversed (202-4) to 10mpm, the tension detection value outputted through the detection value of the tension detector (3) is determined (202-5). After stopping, the surface plate 4-1 of the strip shape inspection means 4 is raised (202-6), and the tension detection value is determined (202-5). When the value is larger than 10 kg, the preceding group motor is reversed again. Deceleration is made again by deceleration 202-4.

After raising the platen plate 4-1 (202-6), the pressing plate (4-8) of the strip shape inspection means (4-8) is lowered (202-7), and the pressing plate (4-8) Check the falling pressure of and set below 5kg / cm2 (202-8).                     

As described above, when the pressing plate 4-8 is lowered and the strip is confirmed to be in close contact with the surface plate 4-1 (detection of the proximity sensor 4-4), the pressing plate 4-8 is raised (202). -11) and end control,

The pressing plate (4-8) is lowered (202-7), and checking the lowering pressure of the pressing plate (4-8) and setting to less than 5kg / cm2 (202-8) and the surface plate (4- If it is impossible to confirm that the strip is in close contact with the surface plate 4-1 in the step of confirming the closeness of 1) (202-9) (that is, if the proximity sensor 4-4 is not detected), the strip support means control unit 207 Will send a signal.

8 is a flowchart of an embodiment of the strip support means control unit 207 constituting the present invention, first receiving a close contact signal of the surface plate 4-1 to the strip from the tension release control unit 202 (207). -1), the upper rotary roll (10-7) is lowered (207-2) by the operation of the air valve 10-2 of the roll drive cylinder (10-4),

When the upper rotary roll (10-7) is lowered (207-2), the support roll drive motor (10-1) is rotated at a speed of 5mpm strip is conveyed backward (207-3), then the strip pressing plate (4-8) is lowered (207-4) when the surface plate (4-1) and the strip is in close contact (207-5), the support roll drive motor 10-1 is stopped, the strip pressing plate ( 4-8) Ascending, control ends.

On the other hand, in order to prevent the formation of tension in the preceding part due to the backward of the support roll driving motor 10-1, a strip additional supply judgment is carried out, and if the tension detection value is larger than 20 kg, the preceding group (8 tension bridle rolls of the winding machine) Drive motor is reversed at 10mpm board speed,                     

When the above-described strip addition supply determination is again performed (207-10) and the tension detection value is smaller than 10 kg, the reverse stop determination is made to stop control of the preceding group drive motor (tension bridle roll No. 8 in the winder).

As described above, the strip control apparatus for on-line shape inspection according to the present invention is welded in order to eliminate the production obstacles caused by the damage of equipment (tension detector and roll equipment) and inspection delay that may occur during the strip control Produced through automatic deceleration control that automatically stops at the surface position by inferring distance based on the standard, tension removal control that smoothly removes tension on the strip through distance and tension control, and strip support roll that smoothly supplies the thin strip It has the effect of minimizing the failure rate of the fault and the designated position inspection hit.

Claims (4)

On the lower surface of the strip S passing through between the distance measuring sensor 5 and the welding point detecting sensor 6 and the winding machine 1 and the tension bridle roll 8, which are installed at the inlet of the strip winding line. Plate plate 4-1 installed to be movable up and down, strip pressing plate 4-8 fixed to be movable up and down on top of plate plate 4-1, and plate plate 4-1 Strip shape inspection means (4) consisting of a plurality of proximity sensors (4-4) embedded in the upper surface of the; The upper rotary roll 10-7 is fixed to the upper portion of the lower roll (7) installed on the exit side of the strip shape inspection means 4 and the rotary shaft of the upper rotary roll (10-7) A strip support means (10) comprising a support roll drive motor (10-1) axially coupled to the universal joint (10-3); A drive motor controller 40 for controlling the drive motor of the support roll driving motor 10-1, the winding machine 1, and the tension bridle 8 of the strip support means 10 and the roll 2; An automatic deceleration control unit 201 which receives a signal from the distance measuring sensor 5 and the welding point detection sensor 6 and transmits the signal to the driving motor control unit 40; Tension removal for raising and lowering the platen plate 4-1 by receiving a signal from the automatic deceleration control unit 201, the winding machine 1, and the tension detector 3 installed at the lower part of the bridle roll 8. A control unit 202; The upper rotary roll 10-7 and the strip pressing plate 4-8 are received by receiving signals from the proximity sensor 4-4 and the tension detector 3 embedded in the surface plate 4-1. Strip control device for on-line shape inspection, characterized in that consisting of the lifting and lowering strip support means control unit (207). The method of claim 1, Strip pressing plate (4-8) constituting the strip shape inspection means (4) is a strip pressing cylinder fixed to the central lower surface of the cylinder support frame (4-7) fixed to the surface plate (4-1) ( Strip control device for on-line configuration inspection, characterized in that the lift by 4-9). The method according to claim 1 or 2, The strip pressing plate (4-8) is a strip control device for on-line shape inspection, characterized in that the urethane pad (4-6) is attached to the lower surface in contact with the strip (S). The method of claim 1, The upper rotary roll 10-7 constituting the strip supporting means 10 is a pair of roll driving cylinders 10-4 fixed to the main frame 10-5 fixed to both sides of the lower roll 7. Strip control device for on-line shape inspection, characterized in that the rotating shaft is coupled to the shaft).

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