KR100815846B1 - Device for preventing overheat of support roll in strip coating device - Google Patents

Abstract

An equipment for preventing overheating of a support roll in a strip coating apparatus is provided to suppress quality defects of a strip according to adhesion of the alien substances to the support roll by suppressing overheating of the support roll and preventing alien substances from adhering to a surface of the support roll in the strip coating apparatus. An equipment(100) for preventing overheating of a support roll in a strip coating apparatus comprises: a cylindrical body(16) which is rotated under a strip(12) by driving a motor(28), and in which a rotary shaft(14) is formed in parallel to the width direction of the strip; a plurality of idle rolls(20) which are installed along a periphery of the body such that the idle rolls are spaced apart from one another, which are fixed to the body through bearing blocks, and of which rotary shafts(18) are rotatable; a gear part(22) for rotating the plurality of idle rolls at the same time, the gear part including first spear gears(221) fixed to the rotary shafts of the respective idle rolls, and a second spear gear(222) which is installed at the center of the first spear gears such that the center of a rotary shaft of the second spear gear is consistent with the center of the rotary shaft of the body, and which engages with the first spear gears; and a cooling part for spraying cooling water onto the respective idle rolls through cooling water-injecting holes formed in the body to cool the idle rolls.

Description

Support for overheat prevention device of steel plate coating equipment {DEVICE FOR PREVENTING OVERHEAT OF SUPPORT ROLL IN STRIP COATING DEVICE}

1 is a perspective view of a support trolley overheating prevention device of a steel plate coating equipment according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the support trolley overheat prevention device shown in FIG. 1.

3 is a front view of the support trolley overheat prevention device shown in FIG.

4 is a cross-sectional view taken along line II of FIG. 3.

5 is a schematic view showing a general steel sheet organic coating equipment.

Explanation of symbols on the main parts of the drawings

12: strip 16: body

20: idle roll 221: first spear gear

222: second spear gear 30: bearing block support

34: shatterproof plate 40: bearing block

46: Drip Pan 50: Cutter

The present invention relates to an organic coating process of the steel sheet manufacturing process, and more particularly to an apparatus for preventing the overheating and foreign matter inflow of the support trolley installed between the organic oven and the water cooling stand.

A conventional organic coated steel sheet is (1) surface plated in an electroplating cell, (2) a chrome coating layer is formed through a chrome coating room, a chrome oven and a water cooling stand, and (3) an organic coater, an organic oven and a water It is completed through the process of forming an organic coating layer through the cold. At this time, between the organic oven and the water cooling stand is a support for preventing the deflection of the strip.

5 is a schematic view showing a general steel sheet organic coating equipment.

Referring to FIG. 5, the chromium-coated strip 11 is coated with an organic solution on the top and bottom surfaces thereof through an organic top coater 13 and an organic bottom coater 15. The surface is dried while passing through the first organic oven 17 and the second organic oven 19, and passes through the supporter 21 to be cooled by the cooling water in the water cooling unit 23.

The average temperature of the strip 11 passed through the organic ovens 17 and 19 is 150 ° C. or higher, and as the hot strip 11 continuously contacts the support trolley 21, the surface temperature of the support trolley 21 increases. Will rise. As a result, the organic solution on the surface of the strip 11 is buried in the support trolley 21, and the support trolley 21 is contaminated, and the contamination causes the foreign substances to adhere to the surface of the strip 11. The contaminants harden and lead to a defect in which scratch grooves are generated in the strip 11.

Therefore, in the related art, a drip pan 25 is installed at the lower end of the support trolley 21, and a cooling water is introduced into the drip pan 25 to cool the support trolley 21. However, this method reduces the cooling effect of the support trolley 21 during the organic coating operation for a long time, the organic resin foreign matter remaining in the cooling water inside the drip pan 25 is attached to the surface of the strip 11 to cause a poor quality.

The present invention is to solve the above problems, an object of the present invention is to suppress overheating of the support trolley in the steel plate coating equipment and to prevent the foreign matter is attached to the surface of the support trolley to suppress the poor quality of the strip due to the foreign matter attached to the support The present invention provides a support control device for preventing overheating.

In one embodiment of the present invention, a support trolley overheat prevention apparatus of a steel plate coating equipment includes a cylindrical body having a rotating shaft positioned parallel to a width direction of a strip at a lower portion of a strip and rotating by a motor drive, along a circumference of the main body. A plurality of idle rolls spaced apart and fixed to the body through a bearing block so that their respective rotation axes are rotatably installed, and a first spear gear in the center of the first spear gears and the first spear gears fixed to the rotation shafts of the respective idle rolls. And a gear unit for rotating the plurality of idle rolls simultaneously with a second spear gear engaged with the field, and a cooling unit for cooling the idle rolls by spraying coolant onto each idle roll.

The bearing block support is fixed to the rotating shaft of the main body, the bearing blocks are located along the circumference of the bearing block support, and the scattering prevention plate fixed to the rotating shaft of the main body may be located between the main body and the bearing block support. The gear unit may be positioned between the bearing block support and the shatterproof plate, and the rotation axis of each idle roll may be fixed to the bearing block through the opening provided in the shatterproof plate.

The main body may form semi-circumferential grooves for accommodating the idle roll, and the cooling unit may include a coolant inlet pipe that introduces the coolant into the main body, and coolant outlets provided in the groove of the main body. The main body may be provided with a foreign material removing unit for contacting the surface of each idle roll to scrape off and remove foreign materials on the surface of the idle roll.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is a perspective view of a support trolley overheating prevention device of a steel plate coating equipment according to an embodiment of the present invention. The supportor overheat prevention device is located between the organic oven and the supporter in the organic coating of the steel sheet.

Referring to FIG. 1, the support trolley overheat prevention apparatus 100 according to the present embodiment includes a cylindrical main body 16 in which the rotation shaft 14 is disposed in parallel with the width direction of the strip 12, and a circumference of the main body 16. A plurality of idle rolls 20 are arranged to be spaced apart from each other and rotatably installed on the main body 16 so that the respective rotary shafts 18 are rotatably installed, and a gear unit for simultaneously rotating them by combining the rotary shafts 18 of the plurality of idle rolls 20. (22) and a cooling unit for cooling the idle roll (20).

The main body 16 rotates such that the plurality of idle rolls 20 sequentially contact the strip 12. The idle roll 20 rotates itself by engaging the movement of the strip 12 without rotating by external power, and through the gear unit 22 when any one of the idle rolls 20 rotates according to the movement of the strip 12. The plurality of idle rolls 20 rotate at the same time. And each idle roll 20 which rotates is cooled by cooling water.

FIG. 2 is an exploded perspective view of the support trolley overheat prevention device, and FIG. 3 is a front view of the support trolley overheating prevention device, and is partially cut away, and FIG.

2 to 4, the main body 16 has semi-circular grooves 24 for the idle roll 20, and the grooves 24 have coolant jets penetrating the main body 16. 26) is located. In FIG. 2, for example, four grooves 24 for disposing four idle rolls 20 are illustrated, and the coolant jet holes 26 may be disposed in a line along the longitudinal direction of the main body 16.

The rotating shaft 14 of the main body 16 is fixed to the motor 28. The bearing block support 30 is fixed to the main body rotation shaft 14 via the first key 32 at both ends of the rotation shaft 14 of the main body 16, and is prevented from scattering between the bearing block support 30 and the main body 16. The plate 34 is fixed to the main body rotation shaft 14 via the second key 36.

When the main body 16 rotates by driving the motor 28, the bearing block support 30 and the shatterproof plate 34 rotate together. Shatterproof plate 34 is formed with a diameter larger than the diameter of the body 16, to prevent the cooling water used to cool the idle roll 20 to splash out of the device.

The idle roll 20 is positioned at a predetermined distance from the main body 16 in the groove 24 provided in the main body 16, and the end of the rotation shaft 18 has an opening 341 provided in the shatterproof plate 34. It penetrates and is located outside the shatterproof plate 34. Outside the shatterproof plate 34, the end of the rotating shaft 18 is fixed to the respective bearing 38, which is accommodated in the respective bearing block 40 provided in the bearing block support 30.

The gear part 22 is positioned at the center of the first spear gear 221 and the plurality of first spear gears 221 fixed to its rotation shaft 18 for each idle roll 20. And a second spear gear 222 which meshes with. Each first spear gear 221 is fixed to the rotation shaft 18 of the idle roll 20 via a third key 42, the second spear gear 222 is the center of rotation axis of the main body 16 (14) Located to coincide with the center.

The first spear gear 221 and the second spear 222 gear are positioned between the bearing block support 30 and the shatterproof plate 34 at both ends of the idle roll 20, and any one idle roll 20 is provided. When the first spear gear 221 rotates by this rotation, the second spear gear 222 rotates to rotate the other first spear gears 221 together. In this way, the gear unit 22 rotates the plurality of idle rolls 20 simultaneously.

The cooling unit includes a cooling water inlet pipe 44 for introducing the cooling water into the main body 16, and cooling water jet holes 26 provided in the groove 24 of the main body 16. The idle roll 20 is cooled by receiving the coolant injected from the coolant jet outlet 26, and the coolant used for cooling is collected in the drip pan 46 provided below the main body 16, and the coolant outlet 48 is disposed. Through the outside.

In addition, in this embodiment, each idle roll 20 is provided with a foreign material removing unit. The foreign material removing unit is fixed to the main body 16 and consists of a cutter 50 in contact with the surface of the idle roll 20, and removes by scraping organic foreign matter on the surface of the idle roll 20 in contact with the rotating idle roll 20 surface do.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 1 to 4.

In the organic coating process of the steel sheet, the strip passing through the organic oven is provided through the support overheat prevention device 100 of the present embodiment through a support trolley and a water cooler. The average temperature of the strip 12 which passed through the organic oven is 150 degreeC or more.

In the support overheat prevention apparatus of the present embodiment, the main body 16 is rotated by driving the motor 28 to sequentially position the plurality of idle rolls 20 under the strip 12. The idle roll 20 positioned below the strip 12 contacts the strip 12 and rotates as the strip 12 moves to rotate the first spear gear 221. Rotation of the first spear gear 221 leads to rotation of the second spear gear 222 and the other first spear gears 221 so that the plurality of idle rolls 20 rotate simultaneously.

The coolant is introduced into the main body 16 through the coolant inlet pipe 44, and the introduced coolant is sprayed onto the surface of the idle roll 20 through the coolant jet port 26 provided in the main body 16. Cooling water used to cool the idle roll 20 is collected in the drip pan 46 provided below the main body 16, and is discharged to the outside of the apparatus through the coolant outlet 48.

In this process, not only the idle roll 20 in contact with the strip 12 but also the idle roll 20 not in contact with the strip 12 rotate together, so that the coolant is evenly sprayed on the surface of the idle roll 20 so that the idle roll 20 ) Cooling efficiently. In addition, the idle roll 20 is in contact with the strip 12, the organic foreign matter on the surface of the strip 12 is buried in the idle roll 20, the cutter 50 in contact with the surface of each idle roll 20 is idle roll (20) The organic foreign matter adhering to the surface is scraped off.

Therefore, since the strip 12 discharged from the organic oven enters the supporter after passing through the idle roll 20 which is continuously cooled, the surface temperature is lowered when entering the supporter to suppress overheating of the supporter. In addition, since the organic foreign matter remaining on the strip 12 is first buried in the idle roll 20 instead of the support trolley, contamination of the support trolley can be minimized.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

As described above, according to the present invention, overheating of the supporter can be suppressed through the contact with the idle roll which is continuously cooled, and the surface contamination of the supporter can be suppressed, so that foreign matters on the steel sheet or scratch grooves caused by the supporter contamination can be suppressed. Can be prevented. Therefore, the support patrol overheating prevention apparatus of the present invention can improve the quality of the steel sheet, contribute to the improvement of work efficiency and facility efficiency.

Claims (5)

In the support to prevent overheating device located between the organic oven and the support, A cylindrical body having a rotation axis positioned parallel to the width direction of the strip at a lower portion of the strip and rotating by a motor drive; A plurality of idle rolls spaced apart from each other along a circumference of the main body, and fixed to the main body through a bearing block to rotatably install respective rotation shafts; First spear gears fixed to the rotation shafts of the idle rolls, and a center of the first spear gears positioned so that the center of the rotation shaft coincides with the center of the rotation shaft of the main body and is engaged with the first spear gears. A gear unit having two spear gears to simultaneously rotate the plurality of idle rolls; And Cooling unit for cooling the idle roll by spraying the cooling water to each idle roll through the cooling water jet holes provided in the main body Support overheat prevention device of the steel plate coating equipment comprising a. The method of claim 1, Bearing block support is fixed to the rotating shaft of the main body, the bearing block is located along the circumference of the bearing block support, the steel plate coating is located between the main body and the bearing block support a scattering prevention plate is fixed to the rotating shaft of the main body Support support overheating device of equipment. The method of claim 2, The first spear gears and the second spear gear are located between the bearing block support and the shatterproof plate, and the rotation axis of each idle roll is fixed to the bearing block through the opening provided in the shatterproof plate. Support for overheat prevention of steel plate coating equipment. The method of claim 1, Semi-circular grooves are formed in the main body for accommodating the idle roll, and the cooling water jet holes are formed in the grooves. And a cooling water inlet pipe for allowing the cooling unit to introduce cooling water into the main body. The method of claim 1, And a foreign material removal unit for contacting the surface of each idle roll with the surface of the idle roll to remove the foreign substances on the surface of the idle roll.

Images