KR20030035565A - Correction Device for Coil Failure of Both Edge - Google Patents

Abstract

PURPOSE: An apparatus for correcting ear defect of both edge parts of the coil is provided to improve quality and facility operating rate by performing correcting operation without causing of strip damage and facility trouble when coil mounted on pay off reel is led-in a skin-pass mill by being unwounded in a strip shape. CONSTITUTION: The apparatus for correcting ear defect of both edge parts of coil comprises lower flat roll part, upper tapered roll part and width adjusting part, wherein the lower flat roll part comprises a pair of tapered rolls(222) and a pair of flat rolls(102), both ends of the flat rolls(102) are rotationally supported by a chock(104) installed on the upper part of a sliding base(118) capable of being moved side to side, one end of the flat rolls(102) is driven by a flat roll driving motor(124), the pair of tapered rolls(222) are installed at the upper tapered roll part, the outer shaft of the tapered rolls(222) is rotationally supported by chock through universal joints(230), the chock is vertically moved by a cylinder(202) in the state that the chock is vertically guided, the inner shaft of the tapered rolls(222) is rotationally supported by chock through spline universal joints(216), the chock is vertically moved by cylinder(202) in the state that the chock is vertically guided, one of the universal joints(230) is driven by tapered roll driving motor(244) through spline universal joint(238), the width adjusting part is installed to move sliding blocks(312) side to side by being interlocked with width variation of side guide according to width variation of strip, wherein a screw shaft(302) in which both screws inserted into bearing box(304) in the center of the width adjusting part face each other is screw connected to female screw hole of the sliding blocks(312), one end of the screw shaft(302) is driven by width adjusting driving motor(316), and the sliding blocks(312) slidingly moved side to side on base(322).

Description

Coil Failure Device for Ear Failures {Correction Device for Coil Failure of Both Edge}

The present invention relates to a device for correcting an ear defect occurring at both edge portions of a coil, and more particularly, a defect occurring in a state in which both edge portions of the coil are bent after the coil is drawn in a temper rolling facility. And a device for straightening the ear ".

In general, in the rough rolling equipment using the hot rolled coil 12, ear defects are ear defects generated during winding during the rolling process, and ear defects generated during cooling of the hot rolled coil 12 at a correction yard after the winding operation. There is this.

In general, the tempered rolling equipment mounts the hot rolled coil 12 to the pay-off reel 10 as shown in FIG. 1, and then presses the pressure roll 14, the entrance pinch roll 16, the light emitter 18, and the light receiver 20. (Generally referred to as CPC), straightener roll 24, and skin pass mill 26 in order to produce a desired quality product.

Conventionally, when the ear defect coil is checked by an operator when the ear defect coil is inserted, it proceeds to the straightener roll 24 to correct the ear defect portion, but the straightener roll 24 fails to be corrected and exits in the overlapped state. The ear defect site is cut out and scraped off. If the ear defect is not confirmed by the operator, the process proceeds as it is, so it is found and processed in a later process.

By the way, the straightener roll 24 used in the conventional ear defect correction method as described above is not a correction device, but a device having a positive crown only to improve the mail flow. Therefore, in this case, since both edge portions of the hot rolled coil 12 proceed without being applied with force, as shown in FIG. 2, the inclination of the ear defect generating portion 32 in the longitudinal direction is passed as it is. In other words, the larger the angle of the ear defects in the width direction is inevitably changed to overlap. Therefore, the part where the overlapping phenomenon occurs is to be scraped.

In addition, when it is not confirmed by an operator, the ear defect generating part 32 is drawn into the skin pass mill 26 without being corrected. Then, since it is press-fitted as it is not corrected, the load is increased on the roll of the skin pass mill 26 due to overlapping, and a roll mark is generated on the surface. Such products should be recoiled in order to scrape the parts again in case of defects due to overlapping in the subsequent process, which not only affects the production, but also causes a problem of deterioration in quality due to the roll mark. there was.

The present invention has been made in order to solve the above problems, and when the coil mounted on the pay-off reel is released in strip form and introduced into the temper rolling equipment, the quality is improved by performing a corrective operation without causing damage to the strip and equipment trouble. The aim is to provide a device for correcting ear defects at both edges of the coil that improves and improves equipment utilization.

1 is a schematic diagram of a conventional temper rolling process,

2 is an explanatory diagram of a conventional ear failure occurrence situation;

3 is an explanatory view of the installation place of the apparatus of the present invention;

4 is a front view of the apparatus of the present invention,

5 is a perspective view of the apparatus of the present invention,

6 is an exploded perspective view of the upper tapered roll portion of the present invention;

Figure 7 is an exploded perspective view of the lower flat roll portion of the present invention,

8 is an exploded perspective view of the width adjustment unit of the present invention;

9 is a plan view for explaining the operating status of the apparatus of the present invention;

10 is a perspective view for explaining the operation of the apparatus of the present invention;

11 is a flowchart illustrating the operation of the apparatus of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: Pay Off Reel 12: Hot Rolled Coil

13: strip 14: pressure roll

16: entrance pinch roll 18: floodlight

20: Receiver 22: side guide

24: Straightener Roll 26: Skin Pass Mill

30: tension mill 32: ear defect generation unit

100: lower flat roll portion 102: flat roll

104: chalk 112: sliding uneven surface

114: choke support 116: sliding groove

118: sliding base 120: choke sliding base support

124: flat roll drive motor 132: coupling

200: upper tapered roll portion 202: cylinder

210: cylinder rod 212: cylinder head

214: choke support cover 216: spline universal joint

222 taper roll 224 chalk

228: choke shaft 230: universal joint

236: needle bearing 238: spline universal joint

244 tapered roll drive motor 252: upper sliding shaft

300: width adjusting section 302: screw shaft

304: bearing box 306: bearing

308: bearing box cover 312: sliding block

314: Coupling 316: Width regulating drive motor

322: base 323: sliding uneven surface

324: sliding block groove 400: support beam

In order to achieve the above technical problem, the apparatus of the present invention is composed of at least a lower flat roll portion 100, an upper tapered roll portion 200, and a width adjusting portion 300, as shown in FIG. It is provided in front of the straightener roll 24 of the temper rolling equipment.

The lower flat roll unit 100 includes a flat roll 102 which is formed in pairs with the tapered rolls 222.

Both ends of the flat roll 102 are rotatably supported by the choke 104 installed on the sliding base 118 that can move left and right, and one end thereof is installed to be driven by the flat roll driving motor 124.

The upper taper roll part 200 is installed so that a pair of tapered rolls 222 having a predetermined angle correspond to a side having a small diameter on the outward side of the strip edge, respectively.

The outward axis of each tapered roll 222 is rotatably supported by the choke 224 through the universal joint 230, the choke 224 is guided in the vertical direction by the cylinder 202 It is installed to be movable up and down,

The inward axis of each of the tapered rolls 222 is rotatably supported by the choke 224 via the spline universal joint 216, the choke 224 being guided in the vertical direction to the cylinder 202. Is installed to move up and down,

The universal joint 230 on one side is installed to be driven by the tapered roll drive motor 244 through the spline universal joint 238.

The width adjusting part 300 is opposite to both spirals inserted in the center bearing box 304 in order to move the sliding block 312 to the left and right in association with the width variation of the side guide due to the width variation of the strip 13. The screw shaft 302 is screwed into the female screw hole of the sliding block 312, one end of which is installed to be driven by the width adjusting drive motor 316, the sliding block 312 is on the base 322 It is installed so that it can slide left and right.

Hereinafter, the configuration of the apparatus of the present invention having the above configuration will be described with reference to Examples.

The apparatus of the present invention is composed of at least the lower flat roll portion 100, the upper tapered roll portion 200 and the width adjusting portion 300 as shown in FIG. If the cylinder 202, the flat roll drive motor 124, the tapered roll drive motor 244, and the width adjustment drive motor 316 of the above components are not manually driven and controlled, these operations can be automatically performed. May be required. In addition, it is preferable that the above apparatus is provided at the front end of the straightener roll 24 of the temper rolling equipment made of the hot rolled coil 12. This is because, first, the ear defects are corrected, and then smoothed by the straightener roll 24, and then rolling by the skin pass mill 26 is preferable.

As shown in FIG. 7, the lower flat roll unit 100 includes a flat roll 102 paired with each tapered roll 222, and both ends of the flat roll 102 are slidably moved left and right. 118 is rotatably supported by the choke 104 provided on the top. In this case, each sliding base 118 is fixed to the choke support 114, and the choke sliding base support 120 may be attached to firmly support the sliding base 118.

In addition, the sliding groove 116 and the sliding concave-convex surface 112 may be installed on each sliding base 118 and the choke support 114 so that the choke 104 can slide left and right.

The choke support 114 may be configured to be secured by a bolt or the like after seating on the sliding block 312 as shown in Figure 5, the sliding base of the choke support 114 seated as shown in Figure 7 After inserting the choke 104 into the 118, the flat roll 102 is reinserted into the choke 104, and the flat roll 102 and the flat roll driving motor 124 are coupled to each other by the coupling 132. As a result, one end of the flat roll 102 is installed to be driven by the flat roll driving motor 124.

As illustrated in FIG. 6, the upper tapered roll part 200 is provided such that a pair of tapered rolls 222 having a predetermined angle correspond to a side having a small diameter on an outward side of the strip edge. In this case, the larger diameter of the tapered roll 222 may be processed to have a certain round so as not to be damaged by the tapered roll 222 on the strip 13 as shown in FIG. 9.

The outward axis of each tapered roll 222 is rotatably supported by the choke 224 through the universal joint 230, the choke 224 is guided in the vertical direction by the cylinder 202 It is installed to move up and down. Here, the upper sliding shaft 252 is inserted into the support beam 400 and then fixed, and the choke support 114 has a choke 224 coupled with the choke shaft 228. In addition, the upper surface portion of the choke 224 to which the taper roll 222 is completely coupled is fastened to the portion consisting of the cylinder 202, the cylinder rod 210, and the cylinder head 212 by bolts, and the choke support cover 214 is again provided. ) Are bolted together, and the choke 224 is configured to move in accordance with the operation of the cylinder 202.

The inward axis of each of the tapered rolls 222 is rotatably supported by the choke 224 via the spline universal joint 216, the choke 224 being guided in the vertical direction to the cylinder 202. It is installed so as to be movable up and down.

Here, the upper sliding shaft 252 was inserted through the choke support 114, and each needle bearing 236 was inserted into the choke supports 114 on both sides. And the choke support 114 of the center was fixed by the bolt so that the position is fixed to the center part of the upper sliding shaft 252.

The universal joint 230 on one side is installed to be driven by the tapered roll drive motor 244 through the spline universal joint 238.

As shown in FIG. 8, the width adjusting unit 300 is a device for moving the sliding block 312 to the left and right in association with the width variation of the side guide according to the width variation of the strip 13.

First, the base 322 is installed on the floor. The base 322 is processed with a sliding concave-convex surface 323 so that the sliding block 312 can be slid left and right. In the meantime, the bearing box 304 is seated on the base 322 and fixed.

A bearing 306 is inserted into the bearing box 304, and after the screw shaft 302 is inserted thereto, the bearing box cover 308 is bolted to each other from left and right.

The sliding block 312 is aligned with the sliding block groove 324 and the sliding concave-convex surface 323 from the left and right, and then screw both sides of the screw shaft 302 to the female screw hole of the center portion of the sliding block 312. In this case, the screw shaft 302 is formed so that both helixes are opposite.

One end of the screw shaft 302 is installed to be driven by the width adjustment drive motor 316. To this end, the coupling 314 may be fastened to the one end of the screw shaft 302 by a key, and may be configured to be coupled to the coupling coupled to the shaft of the width adjustment driving motor 316.

Therefore, the sliding block 312 is installed to be movable left and right by sliding on the base 322 by the drive of the width adjustment drive motor 316.

And both sides of the base 322 is fixed to the left and right support beams 400 that can support the upper sliding shaft 252 as shown in Figure 5 at a predetermined distance, respectively.

The operation of the apparatus of the present invention having the above configuration will be described below with reference to the flowchart of FIG.

First, as shown in FIG. 3, after the hot rolled coil 12 is mounted on the pay-off reel 10 and released in the form of a strip 13, the light emitter 18 passes through the light emitter 18 and the light receiver 20. And the strip 13 is centered by the centering operation of the light receiver 20, and then enters the side guide 22.

In this case, as shown in FIG. 5, the flat roll 102 is rotated in association with the traveling speed of the strip 13 by the flat roll driving motor 124. In addition, since the width adjustment drive motor 316 is driven in conjunction with the fluctuation of the width of the side guide 22, the left and right screws are rotated by rotating the screw shaft 302, so that the sliding block 312 is inward or outward. Is sliding. Accordingly, the width of the side guide 22 and the width of the choke support 114 are adjusted to the same width, and the device according to the present invention is controlled by the side guide 22 according to the width of the strip 13 to prepare for calibration. You are done.

Subsequently, the strip 13 proceeds to pass through the skin pass mill 26, and then, when a constant tension is applied by the tension mill 30, the temper rolling is performed. At this time, if the ear strip 13 is introduced into the light emitter 18 and the light receiver 20 during the continuous rolling operation, the light strip 18 and the light receiver 20 are strip 13 due to the ear defect. Hunting is performed according to the variation of the width. Receiving the hunting signals from the light emitter 18 and the light receiver 20, the speed of the strip 13 is reduced, and at the same time, the tapered roll driving motor 244 is driven to drive the speed and taper roll of the strip 13. Adjust the rotational speed of 222).

Thereafter, the taper roll 222 is lowered by operating the cylinder 202 in response to the drive signal of the tapered roll drive motor 244. Then, the taper roll 222 is brought into contact with the strip 13, and when a certain pressure is formed in the cylinder 202, the cylinder 202 receives the pressure signal and maintains the state while completing the lowering work. Will be performed.

9 and 10, the taper roll 222 and the flat roll 102 rotate in accordance with the traveling speed of the strip 13, and the strip 13 passes therebetween as shown in FIGS. 9 and 10. The difference in the circumferential speed is caused by the difference in the diameter of the tapered roll 222, thereby generating a force that the tapered roll 222 tries to escape to both sides of the strip 13, with the larger diameter Because the ear comes in contact with the erected part first, the corrective work is performed. This uniformly flattened ear defects are subjected to temper rolling again in the skin pass mill 26, so that they are completely corrected after all.

Therefore, the ear defect phenomenon is evenly spread by the pressing means through the lower flat roll and the upper taper roll to suppress the occurrence of scrap by overlapping.

In addition, the completion signal of the calibration operation is made after a predetermined delay time elapses after receiving the hunting return signals of the transmitter 18 and the receiver 20. The cylinder 202 receiving this signal rises, and when the rising completion signal of the ear defect correcting device is received, the traveling speed of the strip 13 returns to normal.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit and the following of the present invention by those skilled in the art to which the present invention pertains Various modifications and variations are possible, of course, within the scope of equivalents of the claims to be described.

Applying the present invention as described above to minimize the occurrence of scrap, even without damaging the strip 13 in advance evenly without damaging the strip 13 to improve the productivity and quality so that It has a very dramatic effect.

Claims (1)

In the apparatus for correcting the ear defects occurring on both edge portions of the coil in the temper rolling equipment, at least the lower flat roll portion 100, the upper tapered roll portion 200 and the width adjusting portion 300, The lower flat roll unit 100 includes a pair of flat rolls 102 formed in pairs with the tapered rolls 222, and both ends of the flat roll 102 are choked provided on an upper side of the sliding base 118, which is movable left and right. 104 is rotatably supported, one end of which is installed to be driven by the flat roll driving motor 124, The upper taper roll part 200 is installed so that a pair of tapered rolls 222 having a predetermined angle correspond to a side having a small diameter on the outward side of the strip edge, respectively. The outward axis of each tapered roll 222 is rotatably supported by the choke 224 through the universal joint 230, the choke 224 is guided in the vertical direction by the cylinder 202 It is installed to be movable up and down, The inward axis of each of the tapered rolls 222 is rotatably supported by the choke 224 via the spline universal joint 216, the choke 224 being guided in the vertical direction to the cylinder 202. Is installed to move up and down, The one side of the universal joint 230 is installed to be driven by the tapered roll drive motor 244 through the spline universal joint 238, The width adjusting part 300 is opposite to both spirals inserted in the center bearing box 304 in order to move the sliding block 312 to the left and right in association with the width variation of the side guide due to the width variation of the strip 13. The screw shaft 302 is screwed into the female screw hole of the sliding block 312, one end of which is installed to be driven by the width adjusting drive motor 316, the sliding block 312 is on the base 322 It is installed so as to be movable left and right by sliding on Correction device for both ears of coil edge defect.