KR20220068495A - Re-coiler for removing of surface contamination of coil - Google Patents

Abstract

The present invention relates to a recoiler for removing surface contaminant of a coil, and more particularly, provides the advantage of maximizing the efficiency of processes by including an uncoiler drum for unwinding a coil, a washing unit for cleaning the coil unwound by the uncoiler drum, and a leveler for flattening the coil on which cleaning by the washing unit is completed, wherein the washing unit includes a water jet part which sprays only high-pressure water toward the lower and upper surfaces of the coil to remove oil contamination and a drying part which jets high-pressure air toward the lower and upper surfaces of the coil to dry the residual water remaining after sprayed by the water jet part.

Description

Re-coiler for removing of surface contamination of coil

The present invention relates to a recoiler device for removing surface contaminants of a coil, and more particularly, by impinging high-pressure steam water on the surface of the coil through a high-pressure jetting device, oiling on the coil, oxide flakes and some contamination It relates to a recoiler device for removing surface contaminants of a coil that can efficiently remove

After being rolled to a certain thickness by the cold rolling machine, according to the requirements of the product, the strip steel will be transferred to some other post-processing process, for example, the hot-dip galvanized product needs to be transferred to a continuous galvanizing machine. In this case, the electrogalvanized product needs to be transferred to a continuous electrogalvanizing apparatus after continuous annealing, and a common cold product forms a cold rolled product through a continuous annealing process or a batch annealing process.

In the case of strip steel coating processes such as continuous hot-dip galvanizing or electrogalvanizing processes, the surface condition and cleanliness of the strip are essential to ensure the quality of the continuous annealing coating. However, during steel rolling, it is difficult to prevent various foreign substances such as drag in the rolling oil, residual iron powder from cold rolling, accumulated dust, welding slag generated from head welding, etc. from remaining on the surface of the steel sheet.

Consequently, the strip must be cleaned to completely remove oil contamination on the surface prior to subsequent annealing. Otherwise, the various oils remaining on the surface may form carbonaceous stains during annealing, pollute the atmosphere inside the furnace, affect the effect of decarburization, and even cause reclamation. In addition, oil contamination can change the quality of the strip surface and lead to nodules on the bottom roller, which can cause defects such as strip surface scratches and the like.

In this regard, a cleaning process is provided in the continuous coating apparatus prior to annealing, and this process is also called a degreasing process, since it is necessary to remove various foreign substances remaining on the strip surface.

The present invention has been devised to solve the above technical problem, and an object of the present invention is to provide a recoiler apparatus for removing surface contaminants of a coil capable of correcting the shape of the coil and cleaning the surface within one process.

In addition, an object of the present invention is to provide a recoiler device capable of integrated operation with an existing process through PLC linkage, process optimization, and immediate commercialization.

The technical problems of the present invention are not limited to the above-mentioned problems, and other technical problems not mentioned will be clearly understood by the operator from the description below.

A recoiler apparatus for removing surface contaminants of a coil according to an embodiment of the present invention includes an uncoiler drum for unwinding a coil, a washing unit for cleaning the coil unwound by the uncoiler drum, and washing by the washing unit a leveler for flattening the completed coil, wherein the washing unit sprays only high-pressure water toward the lower surface and upper surface of the coil to remove oil contamination; and a drying unit for drying the remaining water after being sprayed by the water jet unit.

Here, the washing unit may further include a unit box provided with an installation space in which the waterjet unit and the drying unit are installed, and the coil flows into one side of the unit box and then flows out to the other side of the unit box. have.

In addition, the water jet unit and the drying unit may spray the high-pressure water and the high-pressure air to be inclined in a direction opposite to a moving direction of the coil in the unit box.

In addition, in the installation space of the unit box, a plurality of moving rollers for rotating and moving the lower surface and upper surface of the coil, respectively, may be further included in a portion where the coil is introduced, a portion where the coil flows out, and an intermediate portion therebetween. .

In addition, the water jet unit and the drying unit may be disposed between the plurality of moving rollers.

In addition, the waterjet unit includes a lower waterjet nozzle for spraying the high-pressure water toward the lower surface of the coil, an upper waterjet nozzle for spraying the high-pressure water toward the upper surface of the coil, and the lower waterjet nozzle and the upper waterjet nozzle. It may further include a scattering prevention part for preventing the sprayed water from scattering to the outside from the surface of the coil.

In addition, the drying unit may include a lower air spraying unit for spraying the high-pressure air from a lower portion of the coil toward a lower surface of the coil, and an upper air spraying portion for spraying the high-pressure air from an upper portion of the coil toward an upper surface of the coil. may include wealth.

According to the recoiler apparatus for removing surface contaminants of a coil according to an embodiment of the present invention, the following various effects can be achieved.

First, since oil contamination on the coil can be removed using only high-pressure water without the use of a cleaning agent, cleaning performance is improved and parts can be simplified.

Second, it has the effect that it can be commercialized immediately through PLC linkage.

1 is a side cross-sectional view of a recoiler device according to an embodiment of the present invention;
2 is a side cross-sectional view showing a leveler, a tension bridle, and a double pinch roll among the configurations of a recoiler device according to an embodiment of the present invention;
3 is a side cross-sectional view showing an uncoiler drum in the configuration of a recoiler device according to an embodiment of the present invention;
4 is a side cross-sectional view showing a recoiler drum in the configuration of a recoiler device according to an embodiment of the present invention;
5 is a plan view of a recoiler device according to an embodiment of the present invention;
6 is a plan view showing a leveler, a tension bridle, and a double pinch roll among the configurations of a recoiler device according to an embodiment of the present invention;
7 is a plan view showing an uncoiler drum in the configuration of a recoiler device according to an embodiment of the present invention;
8 is a plan view illustrating a recoiler drum in the configuration of a recoiler device according to an embodiment of the present invention;
9 is a perspective view showing a washing unit in the configuration of a recoiler device according to an embodiment of the present invention;
10 is a cutaway perspective view taken along line AA of FIG. 9;
11 is a conceptual diagram showing the operation of the water jet unit among the configuration of the washing unit;
12 is a conceptual diagram showing the operation of the drying unit among the configuration of the washing unit,
13 is a schematic diagram illustrating a control process of a recoiler device according to an embodiment of the present invention.

Hereinafter, a recoiler device for removing surface contaminants from a coil according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that the description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are not limited to the essence, order, or order of the components. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 is a side cross-sectional view of a recoiler apparatus according to an embodiment of the present invention, and FIG. 2 is a side cross-sectional view showing a leveler, a tension bridle, and a double pinch roll among the configurations of the recoiler apparatus according to an embodiment of the present invention. 3 is a cross-sectional side view showing an uncoiler drum among the configuration of a recoiler device according to an embodiment of the present invention, and FIG. It is a side cross-sectional view, and FIG. 5 is a plan view of a recoiler device according to an embodiment of the present invention, and FIG. 7 is a plan view showing an uncoiler drum in the configuration of a recoiler device according to an embodiment of the present invention, and FIG. 8 is a recoiler drum in configuration of a recoiler device according to an embodiment of the present invention. It is a flat view shown.

First, a recoiler device 10 according to an embodiment of the present invention will be schematically described with reference to the accompanying drawings.

The recoiler device 10 according to an embodiment of the present invention, as shown in FIG. 1 , includes an uncoiler drum 100 for unwinding a coil, and a washing for a coil unwound from the uncoiler drum 100 to be described later. After washing and drying through the unit 110, it may include a recoiler drum 200 for winding the coil.

In addition, an embodiment of the present invention, as shown in FIG. 1 , between the uncoiler drum 100 and the recoiler drum 200 , a leveler 300 for flattening the dried coil, and a leveler 300 ) after the flattening operation, the tension bridle 400 for generating a tension to the coil and a double pinch roll 500 for pulling the coil after the tension is generated by the tension bridle 400 may be further included.

The uncoiler drum 100 performs the function of unwinding the wound coil, and the uncoiler drum 100 is provided with an entry coil car that transports the coil to the uncoiler, and the uncoiler drum 100 During operation, a drum support to prevent sagging of the uncoiler drum 100 may be provided.

A coil opener is configured on one side of the uncoiler drum 100, and the coil opener may serve to guide the first part where the coil is unwound to the three bending rolls configured on one side of the coil opener.

3 The bending roll may serve to provide initial flatness to the coil guided by the coil opener and to position the coil at the center of the transfer line.

In addition, a cutter is provided on one side of the 3-banding roll, and the tip and defective parts of the coil to be transferred are cut using the cutter.

Thereafter, impurities including oil contamination on the surface of the coil are removed through a washing unit 110 to be described later, and thereafter, it may be dried through an air nozzle. The washing unit 110 will be described later in more detail.

After the washing and drying of the coil is completed, the coil may be flattened using the leveler 300 configured at one side of the air nozzle.

In this case, the leveler 300 may be composed of a stretch leveler 310 for flattening the coil after the air nozzle and a finish leveler 320 for leveling the coil after the tension bridle 400 , respectively.

First, the stretch leveler 310 may perform a primary planarization operation on the coil, and may be composed of a top roll, a bottom roll, and a hold roll.

The top roll is fixed with a pass line, and the amount of rolling down can be adjusted by up and down the bottom roll. In addition, the coil can be stabilized during flattening by using the hold roll on the entry/exit side. This can correct the shape defect and deformation defect of the coil and reduce the residual stress.

A tension bridle 400 is configured on one side of the stretch leveler 310 , and the tension bridle 400 serves to generate a front tension in order to increase the flattening effect through the stretch leveler 310 .

As shown in the figure, the tension bridle 400 includes a motor, a reducer, a spindle, a bridle roll, and a plurality of rollers. Also, a pinch roll is constructed, which can only be operated during flattening.

The plurality of rollers are spaced apart from each other in the upper and lower directions, and the coils are transferred while wrapping the upper or lower portions of the rollers to generate tension on the coils.

In more detail, after the coil is inserted into the bridle roll, the plastic elongation rate may be generated with a stronger tensile force than the stretch leveler 310 .

A finish leveler 320 is configured on one side of the tension bridle 400, and the finish leveler 320 continuously operates the EDGE WAVE, CENTER WAVE and CAMBER, CROSS BOW, etc. of the coil through the operation of WORK ROLL and BACK UP ROLL. serves as a correction.

TILTING and UP/DOWN of the upper WORK ROLL are operated by the GEARED MOTOR attached to the lower frame, and the lifting of the BACK UP ROLL is in the form of a TAPER GIB by ADJUST SCREW. As a result, the coil in which tension is generated is secondarily flattened to increase the flatness effect.

A double pinch roll 500 is configured on one side of the finish leveler 320, and the double pinch roll 500 includes a Motor, Reducer, Pinion Stand, Spindle and Pinch Roll, and rises through the finish leveler 320. It maximizes the effect on the tension of the coil. Typically, the stretch leveler 310, the tension bridle 400, and the finish leveler 320 are used together.

After the double pinch roll 500 , the recoiler drum 200 is configured, and various members may be configured between the double pinch roll 500 and the recoiler drum 200 .

The above-described various members include a thickness gauge for measuring the thickness of the central and side portions of the flattened coil, an end pad for preventing the end of the coil from falling into the loop, and a left for preventing the transferred coil from being pulled to one side. , a right guide, a tension pad that gives tension to the coil wound around the recoiler drum 200 so that it can be wound taut, and a cutting part that cuts the end and defective parts of the coil.

The various members are commonly used, and since the above-mentioned various members or separate members can be variously applied and used according to the state and type of the coil, the core components of the present invention (leveler 300, tension bridle ( 400), the use of components for various members or separate members other than the double pinch roll 500) will not be limited.

Meanwhile, a washing unit 110 may be provided between the uncoiler drum 100 and the leveler 300 . The washing unit 110 serves to wash and dry the transferred coil.

9 is a perspective view showing a washing unit in the configuration of a recoiler device according to an embodiment of the present invention, FIG. 10 is a perspective cutaway view taken along line A-A of FIG. 9, and FIG. It is a conceptual diagram showing the state, and FIG. 12 is a conceptual diagram showing the operation state of the drying unit in the configuration of the washing unit.

In the recoiler apparatus according to an embodiment of the present invention, the washing unit 110 includes a unit box 111 having a washing space 111a of a predetermined size formed therein, as shown in FIGS. 9 to 12 , and the unit It may include a water jet unit 113 and a drying unit 115 installed in the washing space 111a of the box 111 .

On one side of the unit box 111, a coil inlet slit 112a into which the coil is charged is formed, and on the other side of the unit box 111, the coil outlet slit 112b that flows out after the charged coil is washed and dried. A pressure tank 119 filled with high-pressure water or air may be provided on the outside of the water jet unit 113 .

A plurality of moving rollers 117a to 117c for moving the charged coil may be provided in the washing space 111a of the unit box 111 . A plurality of moving rollers 117a to 117c are, as shown in FIGS. 9 and 10 , a portion close to the coil inlet slit 112a in the washing space 111a, and a coil outlet slit 112b in the washing space 111a. It may be provided at a region close to, and an intermediate region therebetween, respectively. Hereinafter, for convenience of description, the moving rollers 117a to 117c installed near the coil inlet slit 112a are referred to as the 'first moving roller 117a' and the moving roller installed in the region close to the coil outlet slit 112b. (117a to 117c) will be described as a 'second moving roller (117b)', and the moving rollers 117a to 117c installed in the middle portion thereof are referred to as a 'third moving roller (117c)'.

Each of the plurality of moving rollers 117a to 117c is provided as a pair of a lower roller and an upper roller to support the rolling support of the lower surface and the upper surface of the coil charged into the washing space 111a, respectively, and introduced between the lower roller and the upper roller A predetermined portion of the coil may be flattened.

Here, between the first moving roller 117a and the third moving roller 117c, a water jet unit 113 is provided in the configuration of the washing unit 110, so that the lower and upper surfaces of the charged coil can be washed with water. .

In addition, between the third moving roller 117c and the second moving roller 117b, a drying unit 115 is provided in the configuration of the washing unit 110, and the water sprayed by the water jet unit 113 remains on the coil. Foreign substances including water can be completely removed.

As shown in FIG. 11 , the water jet unit 113 is disposed obliquely upward in the direction opposite to the moving direction of the coil at the lower portion of the coil, and includes a lower water jet nozzle 113a-1 that sprays high pressure water; , an upper waterjet nozzle 113a-2 that is disposed obliquely downward in the direction opposite to the moving direction of the coil from the top of the coil, and a lower waterjet nozzle 113a-1 and an upper waterjet nozzle that sprays high-pressure water ( 113a-2), a lower scattering prevention part 113b and an upper scattering prevention part 113b for preventing the water sprayed from the coil surface from scattering to the outside may be provided to block the scattering path, respectively.

In particular, the recoiler device according to an embodiment of the present invention effectively removes foreign substances including oil contaminants remaining on the lower and upper surfaces of the coil and water jet to sufficiently remove contaminants even by using only water spray pressure to prevent an increase in cost. The high-pressure spraying through the part 113 is characterized in that it is limited to only water.

Meanwhile, as shown in FIG. 12 , the drying unit 115 includes a lower air injection unit 115-1 that injects air at a predetermined discharge pressure from the lower portion of the coil toward the lower surface of the coil, and a coil at the upper portion of the coil. It may include an upper air spraying unit 115-2 for spraying air at a predetermined discharge pressure toward the upper surface of the .

The drying unit 115 having such a configuration removes the remaining water of the water sprayed by the water jet unit 113 using the injection pressures of the lower air injection unit 115-1 and the upper air injection unit 115-2. It dries quickly and performs the role of removal.

When describing the process for the recoiler device, the uncoiling process of unwinding the coil in the uncoiler drum 100, the working process of flattening the coil, and winding the finished coil around the recoiler drum 200 In the recoiler process consisting of a process, the working process may include a washing and drying process while transferring the coil, a leveler process, a tension bridle and a double pinch roll process.

In the annealing process, the coil is unwound in the uncoiler drum 100 . The coil unwound in the above is transferred to the first part of the coil through the coil opener configured on one side of the uncoiler drum 100, and then transferred to the 3-banding roll through the coil opener.

In the three bending rolls, initial flatness is given to the coil and at the same time the coil is transferred, it is positioned at the center of the line. In addition, the first part or the defective part of the coil that has passed through the 3-banding roll is cut by the cutter.

In the working process, after the annealing process, a washing and drying process and a flatness process are performed on the transferred coil. The coil passed through the cutter is passed through the washing unit 110 and is washed for impurities adhering to the surface of the coil.

After the washing of the coil surface is completed, the coil surface is dried through the air nozzle. In order to flatten the dried coil, the coil is sequentially transferred to the leveler 300 , the tension bridle 400 , and the double pinch roll 500 . At this time, the leveler 300 consists of a stretch leveler 310 and a finish leveler 320 , respectively.

The coil is primarily flattened while passing through the stretch leveler 310 . As the coil passed through the stretch leveler 310 passes through the tension bridle 400 , the tension on the coil is improved. The coil passing through the tension bridle 400 is secondarily improved in flatness while passing through the finish leveler 320 .

In the above, the coil that has passed through the finish leveler 320 goes through the double pinch roll 500 to maximize the tension on the coil, and the work process is completed.

After completion of the work process, the winding process is performed. In the winding process, it is wound on the recoiler drum 200 through thickness measurement, coil length detection, etc. depending on the state of the coil.

13 is a schematic diagram illustrating a control process of a recoiler device according to an embodiment of the present invention.

Referring to FIG. 13 , the control unit receives the code of the coil (steel plate), the process speed code, the coil (steel plate) lubrication code, and the target lubrication code, and then transmits the set flow rate control value for each code, based on the transmitted control value. to control the washing unit 110 .

In particular, in the case of this process, software and UI (User Interface) are designed to enable integrated operation with existing processes through PLC linkage (especially, stretch leveler), and it provides the advantage of being able to commercialize immediately through process optimization.

As described above, according to the recoiler device and its process according to the present invention, after the coil uncoiled from the uncoiler drum is washed and dried, flattening, tensioning, and pulling work are sequentially performed to the center and side parts of the non-uniform coil. The flattening of the coil can be made uniform, and the thickness and width can be made uniform, so that various uses for the coil are possible, and the defective rate for the coil can be minimized.

The above, the recoiler device according to an embodiment of the present invention has been described in detail with reference to the accompanying drawings. However, the embodiment of the present invention is not necessarily limited by the above-described embodiment, and it is natural that various modifications and implementations within an equivalent range are possible by those skilled in the art to which the present invention pertains. will be. Therefore, the true scope of the present invention will be determined by the claims to be described later.

10: recoiler device 100: uncoiler drum
110: washing unit 111: unit box
111a: installation space 112a: coil inlet slit
112b: coil outlet slit 113: water jet unit
113a: water jet nozzle 113b: scattering prevention part
113a-1: lower waterjet nozzle 113a-2: upper waterjet nozzle
115: drying unit 115-1: lower air injection unit
115-2: upper air injection unit 117a to 117c: moving roller
200: recoiler drum 300: leveler
310: stretch leveler 320: finish leveler
400: tension bridle 500: double pinch roll

Claims (7)

an uncoiler drum for unwinding the coil;
a washing unit for washing the coil unwound by the uncoiler drum; and
a leveler for flattening the coil washed by the washing unit; including,
The washing unit,
a water jet unit for removing oil contamination by spraying only high-pressure water toward the lower and upper surfaces of the coil; and
a drying unit which sprays high-pressure air toward the lower surface and upper surface of the coil to dry the remaining water after being sprayed by the water jet unit; A recoiler device for removing contaminants from the surface of the coil, comprising: The method according to claim 1,
The washing unit is
a unit box provided with an installation space in which the water jet unit and the drying unit are installed; further comprising,
The coil is introduced into one side of the unit box and then flows out to the other side of the unit box. 3. The method according to claim 2,
The water jet unit and the drying unit are configured to spray the high-pressure water and the high-pressure air in a direction opposite to a moving direction of the coil in the unit box. 3. The method according to claim 2,
A plurality of moving rollers for rotationally supporting and moving the lower surface and upper surface of the coil, respectively, in a portion in which the coil is introduced, a portion in which the coil is discharged, and an intermediate portion thereof among the installation space of the unit box; Further comprising a recoiler device for removing contaminants from the surface of the coil. 5. The method according to claim 4,
The water jet unit and the drying unit are disposed between the plurality of moving rollers, a recoiler device for removing contaminants from the surface of the coil. 5. The method according to claim 4,
The water jet unit,
a lower waterjet nozzle for spraying the high-pressure water toward a lower surface of the coil;
an upper waterjet nozzle for spraying the high-pressure water toward the upper surface of the coil; and
a scattering prevention unit for preventing the water sprayed by the lower waterjet nozzle and the upper waterjet nozzle from scattering from the surface of the coil; Further comprising a recoiler device for removing contaminants from the surface of the coil. 5. The method according to claim 4,
The drying unit,
a lower air spraying unit for spraying the high-pressure air from a lower portion of the coil toward a lower surface of the coil; and
an upper air spraying unit for spraying the high-pressure air from an upper portion of the coil toward an upper surface of the coil; A recoiler device for removing contaminants from the surface of the coil, comprising:

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