KR101008034B1 - An apparatus for correcting the centering of bar in mill line - Google Patents

Abstract

The present invention relates to a bar centering correction device that corrects slab (bar) deflection and automatically corrects the path line centering in response to bar deflection.

The present invention is to measure the centering of the bar at the mouth of the table roller, and to have a multi-stage pitch roll to press the bar at the top and bottom of the bar to correct the bending of the bar up and down, and between the pitch roll A plurality of pitch rolls arranged to press both edges in the width direction of the bar to correct the bar deflection in the width direction, while detecting the width deflection of the bar and protruding on the table roller to match the bar deflection And guide rolls to provide a bar centering correction apparatus in which the bar passes through the guide rolls and the centering thereof is width adjusted to match the centering of the passline.

According to the present invention, it is possible to protect the equipment by not taking a roll phenomenon, to prevent equipment accidents and work delays coming from interference with crop shear, and to correct the centering of the pass line. It is possible to eliminate the twisting and malfunction accidents caused by the deflection to one side, and the effect that can greatly contribute to the improvement of the raw unit of the roll is obtained.

Bar centering correction, roll stamping, crop shear, passline centering, bar twist

Description

Bar centering correction device {AN APPARATUS FOR CORRECTING THE CENTERING OF BAR IN MILL LINE}

1 is a plan view showing a bar centering correction apparatus according to the prior art;

2 is a perspective view of the bar centering correction apparatus according to the present invention as a whole;

3 is an operation explanatory diagram showing a state in which the bar centering center line coincides with the moving center line of the pass line in the bar centering correcting apparatus according to the present invention;

Figure 4 is a side cross-sectional view showing a state in which the up and down bending of the bar is corrected in the bar centering correction device according to the present invention;

5 is an external perspective view illustrating a state in which a bar centering center line coincides with a moving center line of a pass line in the bar centering correcting apparatus according to the present invention;

6 is an exploded perspective view showing a bar centering correction device according to the present invention;

Figure 7 a), b) is an exploded perspective view of the bar deflection detector provided in the bar centering correction apparatus according to the present invention.

       <Description of the symbols for the main parts of the drawings>

1 .... Bar centering correction device 5 .... Body of the fish

7 .... CPC Receivers 9 .... PSI Emitters

12 .... Shipping cylinder 15 .... Bass                 

17 .. Floodlight Drive Wheel 30 .... Support Beam

32 .... Bearing blocks 34a, 34b ... Pitch roll

37 .... Pitch Roll Cylinder 39 .... Universal Joint

41 ... motor 45 ... pusher roll

47 .... Pusher Cylinder 50 .... Guided Guide

52 .... Guided guide cylinder 56 .... Hinge

60 .... bar deflection detector 62 .... shaft side block

65 .... Metal Ball 69 .... Support Roll Frame

75 .... spring 82 .... detector operating cylinder

90 .... width moving part 100 .... control part

200 .... bar 210 .... side guide

P1 .... moving pass line P2 .... bar centerline

△ P ... centering error

The present invention relates to a centering correction device corresponding to the bending of the slab (hereinafter referred to as 'bar'), and more particularly, after slab produced in the steel mill is uniformly heated in a heating furnace, the slab in the rough rolling line In the case of rolling in the thickness and width direction to meet the finishing finishing rolling standard, it relates to a bar centering correction apparatus for correcting the bar deflection generated and automatically corrected to pass line centering in response to the bar deflection.

  In general, the bar worked in the rough rolling line of a hot rolling mill is to be smoothly drawn into the finishing roll 1 (not shown), which is caused by the bending of the bar due to the roll gap during heat dissipation and rough rolling. It is necessary to correct the warping or to correct the centering to the pass line in response to the warping.

   In the conventional bar bending correction operation, as shown in Figure 1a), b), there is no special calibration device that can be corrected when the upper or left, right bending of the tip of the bar 200 occurs, bar ( If the up and down bending (200a) of the 200 occurs, the upper roll is struck when blowing into the finishing roll 1 (not shown) of the subsequent process, which causes a roll mark (taking), and also when cutting the tip end. Frequent equipment accidents are caused by collisions with the top of the crop shearer (not shown).

   Then, when the bar bending to the left and right occurs, as shown in Figure 1a), by adjusting the centering of the bar 200 by the conventional side guide 210, in the prior art bar 200 ) Is advanced by the table roller 220, the conventional side guide 210, which is formed in a straight line on the work side and the drive side located on both sides of the bar 200 is advanced from the side to the advancing direction of the bar 200. Centering correction work is performed to correct misalignment.

That is, since the error ΔP occurs in the actual center line P2 of the bar 200 with respect to the path progress centerline P1 of the bar 200, the operation of correcting the same is performed.

However, the conventional technique is that if the top and bottom bending (200a) of the front end and the rear end occurs during the centering calibration operation of the bar 200, it is in contact with the side guide 210 first, or the entire bar by not contacting The difference between the center line P2 and the pass line P1 of 200 is generated, and the centering error DELTA P is generated, so that it is difficult to properly correct.

   As such, when the bar 200 in which the centering error ΔP is generated enters the first roll to be trimmed by the driving of the table roller 220, the bar 200 is shifted to one side due to one-sided tilting of the bar 200. Occurrence and twisting of the front and rear ends of the c) is frequently generated, causing many problems such as deterioration of rolling quality of the bar 200, work delay, and reduction of the original unit of the work roll.

In addition, when the bending of the bar 200 occurs excessively and the case of leaving the table roller 220 occurs, the rolling operation may be impossible.

     As such, when the deflection of the bar 200 is excessive, the bar 200 may be cooled to allow the operator to cut the bent portions of the front and rear ends with an oxygen cutter and reload them into a heating furnace, thereby causing inconvenience in the work process. Of course, there is a serious delay in the work due to this, if the bending of the bar 200 is large, there was a fatal problem in the hot rolling work.

The present invention is to solve the above-mentioned conventional problems, the object is that when the bar enters the next process by the drive of the table roller, the image of the line, the rear end generated by the deviation and thickness deviation in the bar after the rough rolling process It corrects downward deflection, and even in the event of left and right deflection, it can automatically batch process all the work to ensure that the longitudinal center line of the bar fits with the centering of the passline. It is to provide a bar centering correction device that prevents the occurrence of time, and also bar bar bending that can prevent quality improvement and equipment accidents.

In order to achieve the above object, the present invention, in the bar centering correction apparatus for correcting the bar bending and automatically corrects the centering of the bar to match the pass line centering in response to the bar bending,

The centering of the bar is measured at the mouth of the table roller, and the multi-stage pitch rolls for pressing the bar at the top and bottom of the bar are used to correct the up and down bending of the bar. A plurality of pitch rolls arranged to press in the width direction to correct bar deflection in the width direction, while detecting the width deflection of the bar and protruding a plurality of guide rolls protruding on the table roller to match the bar deflection. By providing the bar centering correction device, characterized in that the bar is passed through the guide rolls, the centering width is adjusted to match the centering of the pass line.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Bar centering correction apparatus 1 according to the present invention is shown in Figures 2 to 4, the present invention is a unit for largely correcting the up, down and left and right bending of the tip of the bar 200, and the pass line when bending occurs It consists of a unit for correcting the centering to match the longitudinal center line (P2) of the bar 200 to the center line (P1) of.

In the unit for correcting the up, down, left and right bending of the tip of the bar 200, the main body 5, which is a means for detecting the longitudinal center line P1 of the bar 200, is located on the drive side of the table roller 220. It is installed, and the upper part of the body (5) is arranged to be embedded in the upper receiver of the receiver on the upper side of the table roller 220 across the table roller 220.

And, as shown in Figs. 3 and 4, the see-through receiver 9 disposed on the lower side of the see-through receiver 7 enters from the work side and the see-through seeder 9 is a table roller ( In the lower side of the 220 is operated by the forward operation cylinder 12, the reverse operation.

That is, the fish operation cylinder 12 is seated on the base 15 of the light projector 9, and the lower fish light projector 9 is mounted on the light emitter rail 19 with the light emitting drive wheels 17 at the bottom thereof. It is intended to be entered by the fish operation cylinder 12.

The light emitter stopper 21 is fixed to one end of the rail 19 to limit the range of the lower light emitter 9 so that the lower light projector 9 does not leave the pass line. And, on the downstream side of the table roller 220, ie, on the downstream side of the light receiver 7 and the light projector 9, the pitch rolls are vertically erected from both sides of the table roller 220 to form a pair of left and right sides. Three sets of support beams 30 are respectively provided, and a plurality of bearing blocks 32 are mounted between the support beams 30 and the support beams 30 so as to be able to move up and down, and to move up and down. The ends of the paired upper and lower pitch rolls 34a and 34b are rotatably inserted, respectively.

In addition, the upper pitch roll 34a is operated up and down, the pitch roll cylinder 37 and the pitch roll cylinder rod 38 for operating it is configured on the upper side of the support beam 30, the bearing block The rods 38 connected to the upper surface of the 32 make the ascend and descend by the operation of the pitch roll cylinder 37, so that the image pitch roll 34a is raised and lowered on the support beam 30.

In addition, the plurality of phase pitch rolls 34a (shown as three in FIGS. 2 to 4) are respectively connected to the motor 41 through the universal joints 39 on the drive side, and each of the three lower sides facing each other. The pitch roll 34b is configured such that the drive shaft 40 is connected to the motor 41 without changing the height thereof.

In this structure, since the universal joint 39 is coupled between the upper pitch roll 34a and the motor 41, the position of the upper pitch roll 34a can be adjusted by up and down. Further, each of the pusher rolls 45 between the pair of support beams 30 and the support beams 30, that is, between the support beams 30 in which the upper and lower pitch rolls 34a and 34b are paired, respectively. ) Are located on the work side and the drive side to enable forward and backward movement.

The pusher rolls 45 are provided with a pusher cylinder 47 and a pusher cylinder base 49 at the rear side thereof, and the front and rear ends of the bar 200 are corrected by the upper and lower pitch rolls 34a and 34b. The left and right deflections of the front and rear ends are corrected.

The pusher rolls 45 include a pusher roll frame 46a and a pair of bearing blocks 46b, and the pusher roll 45 is seated between the bearing blocks 46b, and the pusher roll frame 46a and the pusher. The roll cylinder 47 is connected so that the pusher roll 45 presses the left and right sides of the bar 200 by the pusher roll cylinder 47.

Then, the front of the pitch roll support beam 30 on the light receiver 7 and the light projector 9 side, that is, the entry of the bar 200 to the entrance side of the upper and lower pitch rolls 34a and 34b An induction guide 50 is installed to smoothly, and the induction guide cylinder 52 is attached to the upper front of the support beam 30.

That is, the induction guide 50 is mounted so as to be rotatable to the support beam 30 through the hinge 56, as shown in cross section in Figure 4, the upper end of the guide guide cylinder 52 It is connected to the support beam 30 through. The guide guide cylinder 52 has a body connected to the support beam 30, the rod is connected to the guide guide 50 so that the guide guide 50 is hinged by the operation of the guide guide cylinder 52. It is configured to adjust the angle of inclination around).

    As shown in FIG. 3 and FIG. 5, the unit for adjusting the centering to match the pass line when bar bending occurs as described above, as shown in FIG. 3 and FIG. 5, the up, down bending, left, The bar deflection detector 60 which detects bar deflection in the state which corrected the deflection of a right direction once is provided.

As shown in FIG. 7, the bar bending detector 60 has a metal ball block 61 and a shaft side block 62 inserted into the main body 63, and the shaft side block 62 is connected to the metal ball block 61. A screw thread 62a is provided at an upper portion of the shaft side block 62 to facilitate screwing. The metal ball block 61 has a metal ball 65 mounted thereon to support the metal ball 65. It is connected by the pair of support rollers 67 and the frame 69.

In addition, the support roll frame 69 is connected to the shaft 71 and the bracket 73, the spring 75 is mounted on the outside of the shaft 71, the proximity sensor 77 to the main body 63 of the detector ) Is attached.

In addition, the bar deflection detector 60 as described above is arranged in parallel in the width direction of the bar 200, which is mounted through the fixed box 80, respectively, on one side of the fixed box 80 The detector operation cylinder 82 which performs this operation | movement forward and backward is provided in the work side side.

In addition, the wheels 84 are mounted on the lower side thereof so that the bar deflection detectors 60 can move smoothly during the forward and backward operations by the operation of the cylinder 82, and the wheels 84 are rail 86. And a stopper 88 is attached to the end of the rail 86 to limit the forward limit of the bar bending detector 60.

Therefore, when the bar 200 moves to the upper side of the metal ball 65, the bar deflection detector 60 compresses the spring 75 by the load of the bar 200. The shaft 71 which is lowered and extends downward through the support roller 67 and the frame 69 is positioned at the lower side of the bar 200 by contacting the proximity sensor 77 with its lower end to generate an electrical signal. The bar deflection detectors 60 transmit electrical signals to detect the width of the bar 200.

Through this operation, the bar deflection detector 60 detects the width of the bar 200 while the bar 200 proceeds upwards, and measures the width of the bar 200 by measuring the width of the bar 200. It is to detect which part is bent in the direction.

On the rear side of the bar deflection detector 60, a centering operation for matching the longitudinal center line P2 of the bar 200 with the traveling center line P1 of the moving table based on the detected deflections of the bar 200 is performed. It is provided with the width moving part 90 to implement. The width moving part 90 includes guide rolls 92 for supporting both edges of the bar 200, and the guide rolls 92 are a roller frame 94 and two pairs of bearing blocks 96. And a pair of guide rolls 92 are rotatably seated between the bearing blocks 96.

In addition, the roller frame 94 and the rod of the guide roll cylinder 98 is connected, the guide roller cylinder base (98a) is provided so as to fix the guide roll cylinder (98).

In addition, the present invention is electrically connected to the main body 5 and the bar deflection detector 60, which is a longitudinal center line P1 detecting means of the bar 200, receives a signal, and based on the signals By operating the 41 and the driving cylinder to correct the bending of the line, the rear end and the left and right of the bar 200, the longitudinal center line (P1) of the bar 200 is the movement direction of the bar 200 A program for moving the bar 200 so as to coincide with the center line P2 is provided with a control unit 100 made of a preset small computer or an automatic controller (PLC).

       Referring to the operation and effects of the present invention configured as described above are as follows.

3 to 5, when the roughly rolled bar 200 moves forward by the driving of the table roller 220, the lower light projector 9 disposed between the table rollers 220 is lighted. When the light is sent to the upper receiver 7, the light is received from the upper receiver 7 except for the part covered by the bar, and the centering is detected by detecting whether the overall centering of the bar 200 is correctly positioned in the pass line due to the contrast. Measure The measured value is transmitted from the light receiver main body 5 to the controller 100.

Then, the bar 200 in which the measurement of the centering is completed reaches the pusher roll 45 and the upper and lower pitch rolls 34a and 34b by driving the table roller 220 on the lower side.

If the bending of the tip portion of the bar 200 entered is upward or downward, the inclination of the guide guide 50 is adjusted by the operation of the guide guide cylinder 52, and the tip of the bar 200 is guided. The upper and lower pitch rolls 34a and 34b are reached, and the upper pitch roll 34a is lowered by the pitch roll cylinders 37 and 37a to press the up and down bending of the bar 200. Carry out calibration.

At the same time, the universal joint 39 and the motor 41 installed on the drive side are driven to move forward while firstly correcting the up and down of the bar 200, and the pitch roll cylinders 37 and 37a are provided in three stages. Through the operation of the step to correct the upward and downward bending of the bar 200.

Meanwhile, the driving operation of the motor 41 causes the lower pitch roll 34b driving motor to be driven faster than the upper pitch roll 34a motor when the bar 200 is bent upward according to the bending degree of the bar 200. In the downward bending of the bar 200, the bar 200 may be driven in the opposite direction to correct up and down bending.

As described above, the upward and downward deflection of the bar 200 is corrected by the first and second order corrections, and when the bar 200 is sandwiched between the pitch roll 34a and the pitch roll 34b, the body of the body 5 The pusher roll 45 receives the degree of difference in the left and right centering of the detected bar 200 from the control unit 100 so that the pusher rolls 45 installed on the work side and the drive side are pushed forward by the pusher roll cylinder 47. Then, the deflection of the bar 200 and the poor centering of the bar 200 are corrected.                     

The pusher roll 45 may be partially corrected because the upper and lower pitch rolls 34a and 34b are engaged in the front and rear directions so as not to greatly affect the centering of the overall bar 200. In this way, the pusher rolls 45 are moved forward and backward through the first and second consecutively to correct the deflection of the bar 200 and the partial centering of the bar 200 by applying a force to the side of the bar 200.

The bar 200 that has passed the calibration state is a state in which the up and down bends are completely corrected at the front and rear ends thereof, and the bends in the left and right directions are somewhat corrected.

In this state, the bar 200 is advanced by the driving of the table roller 220 on the rear side and the upper and lower pitch roll motors 41, and the bar deflection detector placed between the table rollers 220 ( 60), bar bending is detected.

As shown in FIG. 7, when the bar 200 enters, when the metal ball 65 is lowered by pressing the metal ball 65, the bracket 73 connected to the shaft shaft 71 is connected to the proximity sensor 77. It is sensed to measure the deflection of the bar 200.

As described above, the sensing means for detecting the warp in the width direction of the bar 200 includes a scientific sensing means using image processing, an electromagnetic sensing means using an induction magnet by a magnetic material, and a sensing means by distance measurement using a laser. Although this is possible, the present invention has a direct contact method as shown in FIG.

As described above, the bar deflection detector 60 detects the deflection of the bar 200 by the proximity sensor 77 and transmits the measurement to the guide roll cylinder 98 located at the rear side thereof, as shown in FIGS. 3 and 5. The guide roll 92 is operated as much as the measured value.

That is, the bar 200 entered by driving the table roller 220 and the pitch roll motor 41 has the measured values of the bar deflection detector 60 as the first guide roll cylinder 98 and the second guide roll cylinder ( 98 and the like, and the guide roll cylinders 98 are moved by the guide rolls 92 according to the measured value with the bar 200 being drawn out through the bar deflection detector 60. The reverse operation is performed so that the centering operation of matching the longitudinal center line P2 of the bar 200 to the center line P1 of the bar moving line according to the bending of the bar is performed.

That is, such an operation is transmitted to the workside guide roll cylinder 98 and the measurement value of the bar deflection detector 60 biased to the workside side with respect to the center line P1 of the table roller 220 and the drive side bar deflection detector 60. The measured value of is transmitted to the drive side guide roll cylinder 98 so that the guide roll 92 is moved forward and backward by the measured value.

In this way, the guide rolls 92 are moved forward and backward to protrude from the left and right sides of the table roller 220 as much as the measured bending of the bar 200, and when the bar 200 passes between them, the bar is 200 is positioned on the table roller 220 in the width direction such that both edges thereof are guided to the guide roll 92 so that the longitudinal center line P2 automatically coincides with the passline center line P1 of the bar 200. Is moved.

Here, the guide rolls 98 may be operated alone to induce centering in response to the bending of the bar 200, thereby correcting the overall centering of the bar 200.

As described above, according to the bar centering correction apparatus according to the present invention, the line and the rear end of the bar 200 are moved up and down, so that the roll protection which may occur in the finishing process of the subsequent process does not occur, so that facility protection may be achieved. This prevents equipment accidents and delays caused by interference with crop shears.

In addition, the centering of the pass line due to the left and right bending of the bar 200 can be corrected, thereby eliminating the twisting and malfunctioning accidents caused by the deflection to one side of the bar 200 which may occur in the finishing process. It is possible to achieve an effect of reducing the failure time and greatly contributing to the improvement of the raw unit of the roll.

Claims (6)

In the bar centering correction device that corrects the bar bending and automatically corrects the centering of the bar 200 to match the pass line centering in response to the bar bending, The centering of the bar 200 is measured at the inlet side of the table roller 220, and the multi-stage pitch rolls 34a and 34b for pressing the bar at the upper and lower parts of the bar 200 are provided to raise and lower the bending of the bar 200. And a plurality of pitch rolls 34a and 34b arranged to press both edges of the bar 200 in the width direction of the bar 200 between the pitch rolls 34a and 34b. The bar 200 is provided with a plurality of guide rolls 92 which correct the bar deflection in the direction, detect the widthwise deflection of the bar 200, and protrude on the table roller 220 to coincide with the bar deflection. Bar centering correction device, characterized in that the centering is adjusted in width so that the centering coincides with the centering of the pass line while passing through the guide rolls. According to claim 1, wherein the entrance of the table roller 220 is disposed in the upper side of the table receiver 220 embedded in the receiver receiver 7, the lower side of the receiver receiver 7 The light projector 9 is arranged to be moved forward and backward by the reciprocating operation cylinder 12 at the lower side of the table roller 220 and is passed between the upper light receiver 7 and the lower light projector 9 (200). Bar centering calibration device, characterized in that for detecting the centering. 3. The pitch roll support beams 30 of claim 2, wherein upstream sides of the light receiver 7 and the light projector 9 are vertically upright from both sides of the table roller 220, respectively. Modifications are provided respectively, and a plurality of bearing blocks 32 are mounted between the support beams 30 and the support beams 30 so as to be able to move up and down, and in the center thereof. The ends of the rolls 34a and 34b are rotatably inserted, respectively, so that the rods 38 connected to the upper surface of the bearing block 32 move up and down by the operation of the pitch roll cylinder 37, and thus the Upper pitch roll (34a) is raised and lowered on the support beam (30) bar centering correction device, characterized in that to correct the upward and downward bending of the bar (200). The pusher rolls 45 are disposed between the support beams 30 on the work side and the drive side, respectively, and the pusher rolls 45 are pushers on their rear sides. The pusher rolls 45 of the bar 200 are provided with a cylinder 47 and a pusher cylinder base 49 in a state in which the line and rear ends of the bar 200 are corrected by the upper and lower pitch rolls 34a and 34b. Bar and centering correction device, characterized in that the left and right bends are corrected by pressing the left and right sides. According to claim 1, While the bar 200 is in progress, the width of the bar 200 is detected, and through the measurement of the width of the bar 200 to determine in which portion the bar 200 in the longitudinal direction The bar deflection detector 60 further includes a bar detecting detector 60, and the bar deflection detector 60 is equipped with a metal ball 65 mounted on a main body 63 and supports the metal ball 65 and an outer side thereof. The spring 75 is mounted, and the proximity sensor 77 is attached to the main body 63 of the detector. When the bar 200 moves to the upper side of the metal ball 65, the metal ball 65 is moved. The spring 75 is pressed down by the load of the bar 200 and the shaft 71 extended downward through the support roller 67 and the frame 69 has its lower end in contact with the proximity sensor 77 and is electrically By generating a general signal, a plurality of bar deflection detectors 60 located at the lower side of the bar 200 transmit electrical signals, respectively, to the width of the bar 200. Bar centering correction apparatus, characterized in that for detecting. The rear side of the bar deflection detector (60) is configured to move the longitudinal center line (P2) of the bar (200) based on the deflections of the bar (200) to the moving roller table (220). Further comprising a width moving unit 90 for performing a centering operation to match the center line (P1), the width moving unit 90 is provided with guide rolls 92 for supporting both edges of the bar (200) The guide rolls 92 include a roller frame 94 and two pairs of bearing blocks 96, and a pair of guide rolls 92 are rotatably seated between the bearing blocks 96. By operating the guide roll cylinder 98, guide rolls 92 to press the left and right edges of the bar 200 to achieve the position movement of the bar 200 on the roller table 220 bar centering correction device, characterized in that .

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