KR20040022845A - An apparatus for preventing deformation from strip coil - Google Patents

Abstract

PURPOSE: An oval coil preventing apparatus is provided which reduces working time and generation of scrap and prevents quality defects due to defective shape of the hot coil by effectively preventing deformation of diameter of the hot coil when naturally cooling hot coil at cooling yard. CONSTITUTION: In an apparatus for preventing an oval coil from being generated by high temperature, material and dead load of the hot coil in the process of cooling hot coil, the apparatus comprises a certain sized base(5); an outer coiling supporting part(10) comprising vertical stands(26a,26b) moved by motor(20) at one side of the base and a plural outer diameter supporting rolls(65) mounted on the vertical stands and ascended and descended vertically by motors(40a,40b) so that the outer diameter supporting rolls support both sides of the outer circumferential surface of the hot coil(305) on the base; an inner coiling supporting part(70) comprising vertical stands(86a,86b) moved by motor(80) on the base in a direction perpendicular to the outer coiling supporting part and inner diameter supporting members(100a,100b) mounted on the vertical stands and ascended and descended by motors(92a,92b) so that the inner diameter supporting members support the inner circumferential surface of the hot coil on the base; and a skid part(120) which is positioned at a central upper part of the base, at both side corners of which inclined projections(122) are formed, and at the center of which load cell(126) is formed to detect that the hot coil is positioned on an upper part of the skid part, wherein the skid part supports the outer circumferential surface and the inner circumferential surface of the coil during cooling of the hot coil.

Description

Duckbill coil prevention device {AN APPARATUS FOR PREVENTING DEFORMATION FROM STRIP COIL}

The present invention relates to a device for preventing generation of duckbill coils due to high temperature, material and self-weight in the process of cooling a hot rolled coil made of high value-added high carbon steel produced in a hot rolling mill, and more specifically, a coil support part. The hot rolled coil is placed on the floor, and the sliding block and the moving beam roll mediate the hot rolled coil evenly to suppress the generation of duckbill coils, thereby eliminating the need to stop equipment operation, thereby improving productivity and quality. The duckbill coil prevention device.

In general, the tempered rolling equipment 300 made of a hot rolled coil has a skin pass for rolling the material and then performing shape correction and rolling of the surface of the hot rolled coil 305 as shown in FIG. 1. I will work.

The produced hot rolled coil 305 is wound from the pay off reel 310 to the coil 305, and thus the coil 305 heated by the temperature rise during the rolling process is spun in a cooling yard. Is cooled. The high carbon steel maintained at a high temperature in such a process has a defect in the duckbill coil 305a, which is formed in an elliptical section as a whole due to the large weight of the coil 305 due to the self-weight of the coil 305 during natural cooling.

2 and 3 illustrate a hot rolled coil 305 having a normal diameter and a duckbill coil 305a having a larger diameter on one side than on the other side. Since the duckbill coil 305a does not follow the normal process due to its deformed shape, it is wound up through a crane in a cooling room and replenished to a conveyor, and then inserted into a pay-off reel 310. During the temper rolling rewinding, the surface and backside inspection and the shape inspection of the duckbill coil 305a are performed.

To this end, the worker conventionally transfers the duckbill coil 305a to the positioner roll 320 of the temper rolling facility 300 using the coil car, and the duckbill coil 305a to the skin pass roll. Supply to 330 again to correct the shape of the duckbill coil (305a).

Then, using the coil car (not shown), the duckbill coil 305a is transferred to the pay off reel 310, and the duckbill coil 305a whose shape is corrected in the transfer process is shaken and bottomed. Fall to the shape, the impact of the duckbill coil (305a) is deformed again to form a phenomenon that is not normally inserted into the pay-off reel (310).

In particular, in the related art, since the inner diameter of the duckbill coil 305a is deformed to be smoothly inserted into the payoff reel 310, the diameter of the payoff reel 310 is repeatedly increased and reduced to force the duckbill into the payoff reel. Insert the coil 305a, in this process by repeatedly pressing the upper portion of the duckbill coil (305a) using a pressure roll (Pressure Roll) (335) to insert the duckbill coil (305a), the duckbill coil (305a) smoothly If it is not inserted in the same way, the entire duckbill coil 305a is treated as scrap.

Meanwhile, the duckbill coil 305a generated as described above is forcibly inserted into the pay-off reel 310 to perform the temper rolling rewinding operation, and even when the shape is restored, scratches on the electric field are generated during such work. It is impossible to produce a normal product has caused a lot of problems in the quality, such as processing out of order.

And, during restoration, the work efficiency is lowered due to the low speed operation of the line speed, and due to the scraping of many duckbill coils 305a, a delay in delivery of the finished product is generated.

The present invention has been made to solve the various problems as described above, to effectively prevent the diameter deformation of the hot rolled coil during natural cooling in the cooling station of the hot rolled coil to prevent the creation of the duckbill coil in advance to restore the duckbill coil It is an object of the present invention to provide an improved duck-coil prevention device to reduce the work time according to, reduce the out-of-order generation of scrap, and to prevent quality defects due to the shape defect of the hot rolled coil in advance.

1 is an explanatory diagram showing a general hot rolled coil production process;

2 is an explanatory diagram showing a normal hot rolled coil;

3 is an explanatory diagram showing an abnormal duckbill coil;

4 is a side view of the duckbill coil prevention apparatus according to the present invention;

5 is an exploded perspective view of the inner peripheral support provided in the duckbill coil prevention apparatus according to the present invention;

6 is an exploded perspective view of the outer ring support provided in the duckbill coil prevention apparatus according to the present invention;

7 is an operating state diagram of the outer ring support provided in the duckbill coil prevention apparatus according to the present invention, a) is a state of the outer support roll is open, b) is a state of the outer ring support roll to support the hot rolled coil;

8 is an explanatory view showing the principle of operation of the outer ring support provided in the duckbill coil prevention apparatus according to the present invention;

9 is a side cross-sectional view showing an inner peripheral support provided in the duckbill coil prevention apparatus according to the present invention;

10 is an operation state diagram of the inner peripheral support provided in the duckbill coil prevention apparatus according to the present invention.

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

1 ..... Duckbill coil stopper 5 ..... Base

10 .... Outer support 12 .... Screw shaft

20 .... Drive motor 22a, 22b .... moving block

26a, 26b ... vertical stand 28a, 28b ... screw shaft

34a, 34a ', 34b, 34b' ... moving block 40a, 40b .... motor

32a, 32b, 48a, 48b ... bevel gear 56a, 56a ', 56b, 56b' ... buffer

60 .... Support 65 .... Outer Diameter Support Roll

70 .... Inner Support 72 .... Screw Shaft

74a, 74b ... Guide 78 .... Bearing Block

80 .... drive motor 82a, 82b .... moving block

86a, 86b ... vertical stand 88a, 88b ... screw shaft

100a, 100b ... inner diameter support 104 ... roller

120 .... skid section 126 .... load cell

130 .... controller 300 .. temper rolling equipment

305a ... Duckbill Coil 310 .... Pay Off Real

335 .... Pressure Roll

The present invention as a technical configuration for achieving the above object,

In the device for preventing the duckbill coil from being generated by the high temperature, material and self-weight in the process of cooling the hot rolled coil,

A base of a certain size; A plurality of outer diameter support rolls mounted on the vertical object and movable up and down by the motor in one direction of the base, and having a plurality of outer diameter support rolls mounted up and down by the motor. Supporting outer right support; An inner ring support portion having vertical rods movable in a direction orthogonal to the outer ring support portion by a motor on the base, and having inner diameter supports mounted on the vertical object to move up and down by the motor to support the inner circumferential surface of the hot rolled coil on the base. And a skid part positioned at an upper portion of the center of the base, and having sloped protrusions at both edges thereof, and having a load cell formed at the center thereof to detect that the hot rolled coil is positioned at an upper portion thereof. By providing the duckbill coil prevention device, characterized in that for supporting the outer peripheral surface and the inner peripheral surface, respectively.

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

The duckbill coil prevention apparatus 1 according to the present invention includes a base 5 having a cross-shaped structure of a predetermined size, and on the base 5 is mounted an outer winding support 10 in one direction, and the outer winding support 10 Inner direction support part 70 is formed in the direction orthogonal to (circle).

As shown in FIGS. 4 and 5, the outer ring support 10 includes a plurality of first and second horizontal grooves 14a rotatably mounting the screw shaft 12 laterally on the base 5. 14b, a hole 5a is formed to penetrate the transverse grooves 14a and 14b so that the transverse screw shaft 12 is rotatably fitted.

The screw shaft 12 is supported on one side so as to be rotatable by the bearing block 16, the right side threaded portion is formed in one side horizontal groove 14a, and the left side threaded portion is formed in the other horizontal groove 14b.

In addition, one end of the screw shaft 12 is connected to the drive motor 20 is configured to connect the forward, reverse rotation operation of the drive motor 20. Meanwhile, moving blocks 22a and 22b are screwed into the right screw and the left screw, respectively, and the moving blocks 22a and 22b form an X-shaped cross section. It is held in the lateral grooves 14a and 14b by the cover plates 24, and in the opposite direction to each other, i.e., in a direction approaching or away from each other, by the forward and reverse rotation of the screw shaft 12. Is moved.

As shown in detail in FIG. 6, the plurality of vertical bars 26a and 26b are mounted on the upper sides of the movable blocks 22a and 22b, that is, one movable block 22a and 22b. ) Has a structure in which a plurality of vertical poles (26a, 26b) are mounted side by side respectively. The vertical poles 26a and 26b each constitute a set of a plurality of ones mounted on the movable blocks 22a and 22b, each of which has a hollow space, and the vertical screw shaft ( 28a) 28b are rotatably mounted.

The screw shafts 28a and 28b are mounted at a lower end thereof so as to be rotatable by the bearing 30 inside the risers 26a and 26b, and an upper end thereof penetrates the bearing 30 and extends upwardly. And bevel gears 32a and 32b, respectively.

On the other hand, the vertical screw shaft (28a, 28b) is formed on the upper and lower sides of the upper and lower threaded portions, respectively, based on the middle thereof, and the movable block (34a) (34a ') 34b (34b) respectively ') Are screwed together so that a plurality of movable blocks 34a, 34a', 34b, 34b 'mounted on one screw shaft 28a, 28b by rotational operation of the screw shafts 28a, 28b. ) Are operated to move closer or further away from each other.

On the other hand, the screw shafts 28a and 28b constituting the set of vertical pairs are each provided by one motor 40a or 40b provided in the upper pedestals 38a and 38b of the vertical tables 26a and 26b, respectively. Driven in the same manner, for this purpose, drive gears 42a and 42b are connected to the shafts of the motors 40a and 40b, and driven gears 44a and 44b are geared to the drive gears 42a and 42b. ) Are engaged, and the driven shafts 46a and 46b with the driven gears 44a and 44b interposed therebetween form bevel gears 48a and 48b at both ends thereof, which are bevel gears 48a and 48b. ) Are disposed inside the gearboxes 50a and 50b so as to be geared to the bevel gears 32a and 32b on top of the screw shafts 28a and 28b.

Accordingly, the operation of the motors 40a and 40b respectively provided on the upper ends of the plurality of vertical stands 26a and 26b is performed by bevel gears 32a, 32b and 48a, respectively. By rotating through the 48b, the movable blocks 34a, 34a ', 34b, 34b' mounted on the set of screw shafts 28a, 28b are simultaneously raised and lowered.

Meanwhile, the vertical bars 26a and 26b form cutouts in the lengthwise direction on one side thereof, and buffer pads 56a, 56a ', 56b and 56b' penetrate through the cutouts 52a and 52b. ) Are positioned so that one end thereof is fixed to one side of the moving blocks 34a, 34a ', 34b, 34b', respectively. The buffer bands 56a, 56a ', 56b and 56b' each have a hollow structure, and the support 60 is elastically supported to the front side by a spring 58 therein. The supporters 60 rotatably support both ends of the outer diameter support roll 65 arranged to connect the pair of vertical bars 26a and 26b, respectively.

As described above, the buffer bands 56a, 56a ', 56b, and 56b' are connected to the supporter 60 so that the outer diameter support rolls 65 are long holes 67, respectively, on side surfaces facing each other. It is formed in the longitudinal direction, and both ends of the outer diameter support roll 65 is rotatably inserted through the long hole (67). Therefore, the outer diameter support roll 65 is formed so as to form a pair by connecting the buffer zones 56a, 56a ', 56b, 56b' positioned on one side of the vertical poles 26a, 26b laterally. As shown, the spring 58 has a structure that is elastically supported in the longitudinal direction of the buffer (56a) (56a ') (56b) (56b').

The outer diameter support roll 65 has a structure in which a hollow cylindrical member is rotatably inserted on the shaft, and can effectively support the side of the hot rolled coil 305 having a width smaller than the length of the outer diameter support roll 65. It is.

As a result, the outer ring support portion 10 is close to each other by the operation of the motor 20 provided on one side of the base 5, the vertical poles 26a and 26b of which the moving blocks 22a and 22b are formed. The moving blocks 34a and 34a in the risers 26a and 26b are moved away from each other and are operated by the motors 40a and 40b provided on the upper sides of the sets of risers 26a and 26b respectively. The plurality of outer diameter support rolls 65 mounted on the buffers 56a, 56a ', 56b, and 56b' through ') 34b and 34b' are operated to move closer or farther from each other in the vertical direction. .

Meanwhile, FIGS. 5 and 9 show an inner ring support 70 for supporting the inner diameter of the hot rolled coil 305. The inner ring support 70 is disposed in a direction orthogonal to the outer ring support 10, which is configured to rotatably mount the screw shaft 72 in the longitudinal direction on the base 5. The guides 74a and 74b are provided, and a hole 76 is formed to connect through the guides 74a and 74b so that the longitudinal screw shaft 72 is provided.

As shown in FIGS. 4 and 9, the screw shaft 72 is located above the screw shaft 12 of the outer ring support 10 and is disposed to penetrate the base 5. In addition, the longitudinal screw shaft 72 is supported so that one end is rotatable by the bearing block 78, the right side thread is formed on one side, the left side thread is formed on the other side, the bearing The opposite side of the block 78 is connected to the drive motor 80 is configured to transmit the forward, reverse rotation operation of the drive motor 80.

Meanwhile, movable blocks 82a and 82b are screwed to the screw shaft 72, respectively, to the right screw portion and the left-threaded portion, and these movable blocks 82a and 82b form an X-shaped cross section. It is connected to the upper side through the long holes 84a and 84b formed on the upper surfaces of the bases 74a and 74b, and the lower ends of the vertical bars 86a and 86b are fixed to the upper ends thereof, respectively.

With this structure, the vertical stands 86a and 86b are opposite to each other, i.e. close to each other, by the forward and reverse rotation of the longitudinal screw shaft 72 on the guides 74a and 74b. Or move away.

The vertical poles 86a and 86b have hollow spaces formed therein, and the vertical screw shafts 88a and 88b are rotatably mounted in the spaces. The vertical screw shafts 88a and 88b are mounted at a lower end thereof so as to be rotatable by a bearing 90 at an inner side of the vertical stand 86a and 86b, and the upper end of the vertical screw shafts 88a and 86b as the vertical screw shafts 88a and 86b. It is connected to the rotating shaft of the motor 92a, 92b fixed to the upper side.

In addition, moving blocks 94a and 94b are screwed to the vertical screw shafts 88a and 88b, respectively, to rotate along the vertical stands 86a and 86b by the rotational operation of the screw shafts 88a and 88b. It is moved up and down, the movable block (94a) (94b) is exposed on one side through the long holes (96a, 96b) formed on one side of the vertical stand (86a) (86b) inner diameter support (100a) (100b) It is connected to one side of).

The inner diameter supporters 100a and 100b have one side connected to the movable blocks 94a and 94b of the vertical bars 86a and 86b, and a plurality of cylindrical rollers 104 are rotatably mounted therebetween. These rollers 104 are each mounted so as to be rotatable on an axis, and a plurality of rollers 104 are positioned parallel to each other.

As a result, the inner support 70 has vertical guides 86a and 86b connected to the moving blocks 82a and 82b by the operation of the motor 80 provided on one side of the base 5, respectively. The movement blocks 82a in the risers 86a and 86b are moved by moving the motors 92a and 92b provided on the upper sides of the risers 86a and 86b on the 74b. Through (82b) through the inner diameter support (100a, 100b) is to move up and down in the vertical direction.

Meanwhile, as shown in FIGS. 4 and 6, the skid part 120 having the inclined protrusions 122 formed at both corners of the base 5 is mounted on the upper surface thereof so that the hot rolled coil 305 is seated on the upper surface thereof. When the hot rolled coil 305 is mounted on the skid unit 120, the load cell 126 is mounted on the lift plate 124, and a load cell 126 is mounted at the center of the skid unit 120. Is transmitted to the controller 130 described later.

The controller 130 is electrically connected to the motors 20, 40a, 40b, 80, and 92a and 92b of the outer ring support 10 and the inner ring support 70 by conducting wires. The operation is performed based on the signal from the load cell 126, and the driver operates the switches (not shown) through the controller 130 to forward and reverse the respective motors and control the operation. It is.

According to the present invention configured as described above, the hot rolled coil 305 is disposed in a cooling field where it is cooled, and supports the shape so that its shape does not change due to its own weight during cooling of the coil 305.

The present invention is a skid portion 120 in a state in which both the vertical poles 26a and 26b of the outer ring support 10 and the vertical poles 86a and 86b of the inner ring support 70 are spread out on both sides of the base 5. The hot rolled coil 305 is placed by the crane. As shown in FIG. 4, the load cell 126 transmits a signal by the load of the coil 305, and the operator drives the motor 20 of the outer ring support 10 through the controller 130. When the screw shaft 12 is rotated so that the movable blocks 22a and 22b inside the horizontal grooves 14a and 14b are close to each other, the pair of vertical bars 26a and 26b are close to each other. , Close to the side of the coil 305 as shown in FIG. 7A).

Simultaneously with the above movement, by operating the motors 40a and 40b provided on the vertical stands 26a and 26b of the outer ring support 10, the movable screw shafts 28a and 28b are rotated to move the movable block ( The buffer bands 56a and 56b connected to the 34a, 34a ', 34b and 34b' are adjacent to each other, and the outer diameter support rolls 65 provided at the tip of the buffers 56a and 56b are mutually close to each other. Collected in close proximity to each other, as shown in FIG. 7B), the outer diameters of the coils 305 are supported on both sides.

In the above process, the outer diameter support rolls 65 are elastically supported by the springs 58 in the buffers 56a, 56b, 56a 'and 56b' so that the outer diameter support rolls are provided on the outer circumferential surface of the coil 305. When 65 is in close contact, the part is elastically supported.

On the other hand, when the operation of the outer ring support 10 as described above, the operation of the inner ring support 70 is subsequently made. 9 and 10, the operator operates the motors 80, 92a and 92b of the inner ring support 70 through the controller 130 so that it is vertical on the guides 74a and 74b. The stands 86a and 86b are moved in proximity to each other.

At the same time, the motors 92a and 92b on the vertical stands 86a and 86b are operated so that the inner diameter supports 100a and 100b are aligned with the central hole 306 of the coil 305, and then the coil ( When the center hole 306 and the inner diameter support members 100a and 100b of the 305 are aligned, the inner diameter support members 100a and 100b are allowed to enter the hole 306 of the coil 305.

In this state, the motors 92a and 92b are operated to slightly raise the inner diameter support members 100a and 100b to the upper side, and the cylindrical roller 104 provided in the inner diameter support members 100a and 100b. When the coil supports the inner circumferential surface of the hole 306 of the coil 305, the coil 305 is elastically supported by the plurality of outer diameter support rolls 65 on both sides thereof, and the inner circumferential surface thereof is the inner diameter surface. It is held up by the rollers 104 of the regions 100a and 100b.

Then, it is maintained for about 48 hours in this state.

In this way, even if cooling of the hot rolled coil 305 proceeds, the shape of the coil 305 does not change due to its own weight. Since the cooling is performed in a state in which the coil 305 is supported by the outer ring support 10 and the inner ring support 70, respectively, the coil shape does not change even when cooling is completed, and thus the duckbill coil 305a is not generated. It is not. On the other hand, when the 48 hours have elapsed by supporting the coil 305 as described above, since the cooling is almost completed, the operator can operate the motors 20, 40a, 40b, 80, and 92a through the controller 130. 92b are operated to return to the original state to wait for the next coil 305 to cool down.

According to the duckbill coil prevention device 1 according to the present invention as described above, by supporting the outer circumferential surface and the inner circumferential surface of the coil 305 so that the duckbill coil 305a is not generated during the natural cooling of the high temperature coil 305, Minimize scrap generation and out-of-order products.

Therefore, it is possible to achieve a reduction in the working time according to the restoration of the duckbill coil 305a, and to obtain an excellent effect of improving the facility operation rate.

Claims (5)

In the device to prevent the hot-rolled coil 305 is generated in the duckbill coil 305a by the high temperature, material and self-weight in the process of cooling the hot rolled coil 305, A base 5 of constant size; It is equipped with vertical poles 26a and 26b movable by the motor 20 in one direction of the base 5 and mounted on the vertical poles 26a and 26b by the motors 40a and 40b. An outer circumferential support part 10 having a plurality of outer diameter support rolls 65 capable of moving up and down to support the outer circumferential surface of the hot rolled coil 305 on the base 5 from both sides; It is provided with the vertical stand 86a, 86b movable on the base 5 in the direction orthogonal to the outer ring support 10 by the motor 80, and mounted on the vertical stand 86a, 86b. An inner peripheral support part 70 having inner diameter support parts 100a and 100b which are moved up and down by the 92a and 92b to support the inner circumferential surface of the hot rolled coil 305 on the base 5; and The skid portion is located at the center of the base 5, the inclined protrusions 122 are formed at both edges, the load cell 126 is formed at the center to detect that the hot rolled coil 305 is located at the top ( 120); duck ball coil prevention device characterized in that for supporting the outer peripheral surface and the inner peripheral surface of the coil during cooling of the hot rolled coil (305), respectively. According to claim 1, The vertical poles (26a) (26b) are each formed of a set of a plurality of mounted on the movable blocks (22a, 22b), each of which is formed of a hollow space, The space is mounted so that vertical screw shafts 28a and 28b are rotatable, and the screw shafts 28a and 28b are rotatable by bearings 30 at their lower ends inside the risers 26a and 26b. The upper side extends through the bearing 30 to the upper side, and bevel gears 32a and 32b are mounted, respectively, and the vertical screw shafts 28a and 28b are positioned relative to the middle thereof. On the lower side, a right screw portion and a left screw portion are respectively formed, and the moving blocks 34a, 34a ', 34b and 34b' are respectively screwed into the screw portions to rotate the screw shafts 28a and 28b. The plurality of movable blocks 34a, 34a ', 34b, 34b' mounted on one screw shaft 28a, 28b are close to or far from each other. Duckbill coil protection device, characterized in that the outer diameter of the support is actuated roller 65 are moved to. According to claim 1, wherein the outer diameter support roll (65) by transversely connecting the buffer (56a) (56a ') (56b) (56b') located on one side of the vertical (26a) (26b) As one set, it is elastically supported in the longitudinal direction of the buffer (56a) (56a ') (56b) (56b') by the springs 58, the buffer (56a) (56a ') (56b) (56b ') has a hollow structure, each of which is provided with a support (60) elastically supported forwardly by a spring (58), the support (60) is a vertical to form a pair Duckbill coil prevention device characterized in that it is arranged to connect the base (26a) (26b) respectively to support the both ends of the outer diameter support roll (65) to be rotatable. The inner inner support portion 70 is provided with a plurality of first and second guides 74a and 74b for rotatably mounting the screw shaft 72 on the base 5 in a longitudinal direction. Motors 92a and 86b provided on the guides 74a and 74b and movable on opposite sides of the guides 74a and 74b and provided on an upper side of the stands 86a and 86b. 92b) inside diameter support (100a) (100b) is a duck ball coil preventing device characterized in that the movement. According to claim 4, The inner diameter support (100a) (100b) is one side is connected to the moving block (94a) (94b) of the vertical stand (86a) (86b), a plurality of cylindrical roller 104 in the middle ) Are rotatably mounted, and these rollers (104) are a plurality of rollers are positioned in parallel to each other so as to be rotatable on the shaft.