KR101429988B1 - Spindle unit of plating tank roll - Google Patents

Abstract

There is provided a plating apparatus for a plating bath roll such as a sink roll and a stabilizing roll disposed in a plating bath of a molten metal plating facility.

A bearing member in which a shaft of a roll which is provided in the bearing water frame and is immersed in the plating tank is rotatably assembled; And molten metal blocking means configured to block penetration of molten metal into the bearing member while being connected to either or both of the bearing bearing frame and the roll shaft.

According to the present invention as described above, it is possible to prevent the molten metal from penetrating into the roll-bearing water portion, particularly the bearing member, during the operation stop of the plating bath roll and during the operation of the plating bath roll, A further improved effect of extending the service life of the roll can be obtained.

Plating trolley, sink roll, stabilizing roll, plating trolley Spindle unit

Description

Technical Field [0001] The present invention relates to a rolling apparatus for a galvanizing machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water tank apparatus of a plating bath roll such as a sink roll and a stabilizing roll disposed in a plating bath of a molten metal plating facility, And a spindle unit of a plating trowel, which prevents the molten metal from penetrating into the rolling bearing portion, particularly the bearing member, during the operation of the plating troll roll, thereby extending the service life of the trowelling roll, .

For example, when a second metal layer is plated on the surface of a steel plate, for example, a plating method using an electrochemical treatment method or a plating method using a plating method in which a plating solution A plating method using a molten plating bath in which a steel sheet is immersed and plated is mainly used.

One of the representative forms of molten metal plating is a galvanized steel plate plating in which zinc is plated on the surface of a steel plate while passing through a galvanizing bath in which molten zinc is filled to coat zinc on the surface of the steel plate.

In particular, continuously plating the steel sheet by continuously passing through the plating bath is referred to as a continuous galvanizing line (CGL).

Such hot-dip galvanized steel sheets have been mostly used as building materials in the beginning, but in recent years, it has become possible to mass-produce hot-dip galvanized steel sheets that can withstand harsh processing conditions, It is expanding.

Therefore, as the use range of steel sheets for electric household appliances or automobile materials, for which the surface quality is important, is increasing, there is a demand for improving the surface plating quality such as surface gloss, corrosion resistance, weldability and paintability Is increasing.

On the other hand, FIGS. 1 and 2 show a plating bath of the hot-dip galvanizing line (CGL) and plating bath rolls disposed in the plating bath.

That is, as shown in FIG. 1, the continuous steel plate 100 is continuously supplied from a uncoiling apparatus (not shown) and connected to a heating furnace (not shown) The molten zinc 120 is introduced into the plating bath 110 filled with molten zinc.

The steel plate 100 is sandwiched between a plating roll (or immersion roll) such as a sink roll 140 immersed in the plating bath 110 and a steel plate stabilizing roll (or stabilizing roll) The pass line is continuously transferred through the plating bath while being vertically changed to the upper part of the plating system.

At this time, the molten metal 120 filled in the plating tank 110, that is, molten zinc, is deposited on the surface of the steel sheet 100.

Next, the steel plate 100 passing through the sink roll passes through between the pair of stabilizing rolls 150, and the warp is corrected. The steel plate 100 thus calibrated is passed through the air knife 160 The surface adhesion amount of the molten zinc is adjusted.

The steel sheet is then cooled and solidified and then wound in the form of a coil through a winding device (not shown).

Therefore, the sink roll 140, which is the plating roll, can change the direction of vertical feeding after the plating vessel is pulled in, and the stabilizing roll 150 immediately above the stabilizing roll 150 can warp the steel plate 100 in the high temperature state , Corrects the bending and suppresses the occurrence of vibration (vibration) during the operation.

At this time, the steel sheet is plated after heat treatment at a high temperature of about 450 ° C to 460 ° C in accordance with the molten zinc temperature.

2, a pair of stabilizing rolls 150 are provided on the upper side of the levers 170 immersed in the plating tank 110, one of which is fixedly installed, And a sink roll 140 is connected to the lower part of the frame in correspondence with the thickness and width of the steel plate in association with the moving arm 152 moving back and forth as a driving source of the frame.

Therefore, plating vessel introduction and extraction of the plating bath rolls 140 and 150 are performed integrally with the rig 170.

FIG. 3 schematically shows the number of shafts of the plating roll, specifically, the number of shafts of the sink roll 140 for switching the progress of the steel sheet in the plating tank 110. As shown in FIG.

3, the sink roll 140 is configured such that the roll shaft 142 is fastened to the bearing member 184 provided on the frame 182 of the lower end bearing portion 180 of the rig 170, And induce the steel plate to proceed while idling.

On the other hand, Fig. 3 shows the roller bearing structure of the sink roll as one example of the plating roller roll, but the roller bearing roller structure of the stabilizing roll 150 of Figs. 1 and 2 is the same.

However, in the conventional bearing structure of the plating bath roll, since the plating bath roll, that is, the sink roll 140 and the stabilization roll 150 are immersed in hot molten metal such as molten zinc and rotated, There is a problem that abrasion of the bearing member of the roll shaft bearing portion occurs abruptly, considering that zinc is highly corrosive.

When abrasion (particularly, flattening) of the bearing member of the roll bearing 180 is generated, the vibration in the plating roll, particularly the sink roll, is severely generated, which results in plating failure of the coated steel plate.

Therefore, at present, the bearing members (elements) of the plating rollers rollers have a period of replacement of about 3 to 4, or about 15 days, periodically.

Knowing is a direct factor in the loss of product production due to the suspension of plating facilities due to parts replacement.

On the other hand, other conventional techniques for solving the problem of molten metal penetration into the bearing member of the bearing of the plating tank roll to prevent wear of the bearing member to extend its replacement cycle or to prevent penetration of the molten metal into the bearing member However, since the efficiency is not sufficient in reality and the structure is very complicated, there has been a problem in facility operation and operation.

For example, it is desirable to block the contact between the molten metal and the roll bearing member, rather than to improve the abrasion resistance of the bearing member. Conventionally, for example, an oil film is artificially formed between the bearing members, However, the surface area of the oil film is so small that it can not be effectively supported by the bearing member.

Accordingly, the applicant of the present invention has proposed the present invention to more effectively prevent the molten metal from penetrating into the bearing member of the roll-bearing part.

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to effectively prevent penetration of molten metal into a bearing member of a plating bath roll, The service life of the coarse roll bearing portion is prolonged, and ultimately, the quality of the plating of the steel sheet is improved.

Technical Solution According to an aspect of the present invention, there is provided a casting machine comprising: a bearing body frame disposed in a plating bath filled with molten metal; A bearing member provided on the bearing water frame and to which a shaft of a roll immersed in the plating tank is rotatably assembled; And a molten metal cutting means configured to block penetration of molten metal into the bearing member while being connected to either or both of the bearing unit frame and the roll shaft, A first blocking member provided so as to be able to flow in the axial bearing frame; And a second blocking member that is provided to be in contact with the first blocking member when the roll shaft is stopped to roll and generates an induction magnetic field during rotation of the roll to block penetration of the molten metal into the bearing member even when being separated from the first blocking member, ; And a plating jig roll shaft bearing device comprising:

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According to the present invention, even when the plating tanks rolls in the plating tanks, such as the sink rolls and the stabilizing rolls, are stopped and when the plating tumbler rolls are operated, But also provides an excellent effect which makes it possible to effectively prevent penetration into the supporting bearing member (element).

Therefore, it is possible to prevent the impregnation of foreign matter (dross) due to penetration of the molten metal into the roll shaft bearing portion including the bearing element, thereby enabling high-speed operation of the plating roller roll as a whole, Thereby extending the service life of the battery.

Eventually, it will ultimately make it possible to improve the plating productivity and quality of the coated steel sheet.

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

However, the plating unit and the plating unit roll, such as the sink roll and the stabilization roll, described in the prior art, are denoted by the same reference numerals as 100 units, and the apparatus according to the present invention is a unit of 10 units .

4, a description is given only of a sink roll 140 guiding the progress of the steel strip in the vertical feed direction. However, the present invention is not limited to the above-described stabilizing roll, 1) is no problem to apply.

Therefore, the sink roll will be replaced by the plating bath roll 140 in the following description.

First, FIG. 4 shows the entire configuration of the plating bath roll bearing water feeding apparatus 1 according to the present invention.

For example, as shown in FIG. 4, the plating jug roll bearing device 1 of the present invention mainly includes a bearing water frame 10 disposed in a plating tank 110 filled with a molten metal 120, A bearing member (30) provided in the frame (10) and in which a shaft of a roll immersed in the plating tank is rotatably assembled; and a bearing member (30) attached to one or both of the bearing bearing frame and the roll shaft And a molten metal shutoff means (50) configured to block molten metal penetration.

Therefore, the apparatus 1 of the present invention, which is composed of the main component parts of the shaft part frame 10, the bearing member 30 and the molten metal shutoff means 50 as the bearing member, The bearing member 184 of the bearing unit 180 that enables the rotary drive of the coarse rolls to solve various conventional problems associated with unprotected exposure of the molten metal filled in the plating vessel, for example, to the zinc solution .

In particular, the plating trough roll bearing body apparatus 1 of the present invention as described above prevents or at least suppresses rapid corrosion of the bearing member 30 by the molten metal, so that the service life of the bearing member 30 is shortened, Accordingly, it is possible to prevent unstable operation and interruption of the plating operation using the plating bath roll as well as the plating bath roll.

That is, the plating jug roll bearing water treatment apparatus 1 of the present invention has the feature of the embodiment that the penetration of the molten metal into the bearing member 30 side is blocked as much as possible.

4 and 5, in the apparatus of the present invention, the shaft bearing frame 10 is connected to the roll shaft portions of the stabilizing rolls shown in FIG. 2, and is inserted into the plating tank when necessary Is provided at the lower end of the drawn-out lee (170).

The frame 10 of the plating trough roll bearing unit according to the present invention is provided with a bearing member assembling groove 12 (see FIG. 1) for assembling the bearing member 30, which is engaged with the roll shaft 142, ).

For example, the assembling groove portion can be manufactured by forming the shaft portion frame 10 into a cylindrical shape and machining the interior thereof concavely. However, in reality, the frame is bent to form an assembling groove portion inside thereof, It would be most desirable.

3 and 4, the bearing member 30 to which the shaft 142 of the actual plating bath roll is fastened is a sleeve and a bushing member assembled form as shown in Fig.

7, a hollow cylindrical sleeve 32 'having one side opened in the roll shaft 142 of the plating bath roll 140 is assembled, and the sleeve 32' Is engaged with a cylindrical bushing member (34 ') mounted on the mounting groove portion (12) and rotationally driven.

Therefore, the bearing member 30 of the plating bath roll 140 filled with the molten metal is in the form of a sleeve + bushing member.

For example, it is difficult to use a bearing part (hereinafter, simply referred to as a "single bearing part") having a structure such as a normal ball + outer drive part + inner drive part or the like in the bearing part of the plating roll. As a result, when the molten metal 120 is penetrated into the bearing part, the operation is unstable and the part elements are unevenly worn.

However, as described below, in the plating jel roll bearing device 1 of the present invention, since the molten metal shielding means 50 for preventing penetration of molten metal into the bearing member is provided, it is possible to use an ordinary single bearing component .

Therefore, in the plating apparatus of the present invention, it is possible to use the bearing member 30 in the form of the single bearing part 30 or the normal sleeve 32 '+ the bushing member 34'.

That is, if it is possible to use ordinary bearing parts, the roll assembling structure will be simplified and assembling will be easier than the sleeve and bushing member.

In particular, since the molten metal cutting means 50 blocks the molten metal 120 from flowing into the bearing member side in any form, it will effectively prevent corrosion of the bearing member.

For example, as shown in Figs. 5 to 7, the molten metal shielding means 50 from the plating jel roll roll bearing unit 1 of the present invention to the bearing member is provided with A first blocking member 52 provided so as to be able to flow and a second blocking member 52 provided to be in contact with the first blocking member 52 at the time of stopping the roll on the roll shaft 142, And a second blocking member 54 configured to block the penetration of the molten metal into the bearing member even if it is spaced apart.

Therefore, in the apparatus of the present invention, the first and second blocking members 52 and 54 cooperate with each other to block the movement of the bearing member of the molten metal.

5 and 7, in the apparatus of the present invention, between the first blocking member 52 and the bearing water frame 10, and between the roll shaft 142 and the bearing water frame 10 It is more preferable for the molten metal barrier property to further include the sealing ring member 56 for blocking the molten metal from moving toward the bearing member 30 (the monolithic bearing part or the sleeve-bushing member).

It is most preferable that the sealing ring member 56 of the present invention is assembled to the apparatus in the form of a ring, and if possible, provided with a ceramic ring having heat resistance and less wear.

For example, the sealing ring member 56 includes a frame 10, a first blocking member 52, a frame member 10, and a roll shaft 142, It is most preferable to use a ceramic material having heat resistance and less abrasion.

5 and 7, the first blocking member 52 includes an elastic body 52a fixed to the bearing water-bearing frame 10, And a first blocking ring provided to surround the roll shaft in front of the bearing member.

However, it is preferable that the blocking member 52 of the first blocking ring is formed of a semi-magnetic ring such as copper which is less affected by the induction magnetic field described below.

Therefore, the blocking member 52 of the first blocking ring is normally urged rearward by the elastic body 52a of the spring fastened between the frames 10 to the opposite side of the frame.

7, it is preferable that a guide bar 52b is fixed to the first blocking member 52 to keep the flow direction of the spring-like elastic body constant.

5 and 6, the second blocking member 54 is provided as a second blocking ring which is mounted on the roll shaft 142 and is integrally rotated. On one side of the second blocking member 54, And permanent magnets 54a arranged alternately.

Therefore, the blocking rings, which are the first and second blocking members, are in contact with the second blocking portion due to the elastic force of the elastic body when the plating bath roll 140 is not rotating, , The penetration of the molten metal as the sealing ring member (56) is almost completely blocked.

5 and 7 schematically show the first blocking member 52, the gap between the frame 10 and the roll shaft 142 is preferably set such that the rotation of the roll shaft and the flow of the first blocking member Or the like.

5 to 7, when the roller shaft 140 is rotated by the steel plate 100 advanced to the plating roll 140, the roll shaft 142 is supported by the bearing member 30 or 32 '+ 34' At this time, the second blocking member 54 is also rotated integrally.

As a result, the permanent magnets 54a having a very large magnetic flux density are arranged alternately in polarity, so that an eddy current is generated between the first blocking members when the second blocking member rotates due to the change of the magnetic field. The first blocking member 52 flows while compressing the spring as the elastic body and is finely spaced between the first and second blocking members so that the first blocking member 52 does not rub against each other due to the repulsive force generated by the eddy current.

At this time, the first and second blocking members are separated from each other so that the molten metal 120 penetrates into the region where the induction magnetic field is formed. However, as the Lorentz force acts on the molten metal due to the change of the induction magnetic field, The penetration into the furnace is blocked.

Secondarily, the sealing ring member 56 reliably blocks penetration of the molten metal into the bearing member.

8, the first and second blocking members may be provided in different forms. For example, the permanent magnets 54a of the second blocking member may be formed of a protruding bushing member (58), and the first blocking member (52) is further formed with a guide groove portion (60) into which the protruding bushing member (58) is partially inserted and rotated.

Therefore, since the protruding bushing member 58 of the second blocking member 54 is inserted into the guide groove portion 60 of the first blocking member 52 and the contact portion is maintained even when the members are separated by the induction magnetic field, Will more certainly block the penetration of the bearing member.

Further, since the permanent magnets are provided inside the protruding bushing member 58, the permanent magnet attachment of the molten metal and the like will be further prevented.

Accordingly, even if the plating jig roll bearing water treatment apparatus 1 of the present invention uses a bearing member (part) or a bearing member (assembly part) in which the sleeve and the bushing member are assembled, stable rotation To prevent corrosion of the bearing members by molten metal penetration and ultimately to extend the useful life of the plating bath rolls.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be appreciated that those skilled in the art will readily understand the present invention.

1 is a perspective view showing a plating bath of a known continuous hot-dip coating line (CGL)

2 is a side view showing a plating bath roll

3 is a schematic view showing a structure of a sink roll bearing of a conventional plating bath

FIG. 4 is a view showing a roll bearing device according to the present invention and a sink roll of a plating tank fastened thereto

Fig. 5 is a plan view of the recessed portion shown in Fig.

6 is a plan view showing a magnet arrangement state of the second blocking member of the inventive device

Fig. 7 is a structural view showing the bearing portion of the sleeve and bushing of the inventive device

Fig. 8 is a diagram showing a modification of the apparatus of the present invention shown in Fig. 4

Description of the Related Art [0002]

1 .... Plating joule roll bearing device 10 .... Bearing frame

30 .... bearing member 32 '.... sleeve

34 '.... bushing member 50 .... molten metal breaking means

52 .... first blocking member 54 .... second blocking member

56 .... sealing ring member 58 .... projecting bushing member

60 .... Guide groove part 110 .... Plating tank

120 .... Molten metal (plating solution) 130 .... Snout

140 .... plating bath roll (sink roll) 150 .... plating bath roll (stabilizing roll)

Claims (8)

A bearing body frame (10) disposed in a plating bath (110) filled with molten metal (120); A bearing member (30) provided on the bearing water frame (10) and in which a shaft of a roll immersed in the plating tank is rotatably assembled; And a molten metal cutting means (50) configured to block penetration of molten metal into the bearing member while being connected to either or both of the bearing bearing frame and the roll shaft, The molten metal cutting means (50) for the bearing member A first blocking member (52) provided so as to be able to flow in the axial bearing frame (10); And And an induction magnetic field generated when the roll is rotated to prevent penetration of the molten metal into the bearing member even when the first shield member is separated from the first blocking member. A second blocking member (54); And a plating bath. The method according to claim 1, Characterized in that the bearing unit frame (10) comprises a bearing member mounting groove portion (12) which is provided at a lower end of a lee (170) drawn in and drawn out into a plating tank and in which the bearing member (30) Jaw roll bearing device. 3. The method according to claim 1 or 2, The bearing member (30) comprises a single bearing component; And An assembly part consisting of a sleeve 32 'mounted on the roll shaft 142 and a bushing member 34' provided on the bearing support frame 10 so that the sleeve is rotatably engaged; A plurality of plating rolls having a plurality of plating rolls; delete 3. The method according to claim 1 or 2, And a sealing ring member (56) provided between the first blocking member and the bearing water frame and between the roll shaft and the bearing water frame to further prevent penetration of the bearing member of the molten metal. Device. 3. The method according to claim 1 or 2, Wherein the first blocking member (52) is formed of a first blocking ring fixed to an elastic body (52a) fixed to the bearing water frame (10) and provided so as to surround the roll shaft in front of the bearing member Jaw roll bearing device. 3. The method according to claim 1 or 2, The second blocking member 54 is provided with a second blocking ring mounted on the roll shaft 142 and rotated integrally therewith, Permanent magnets 54a having alternating polarities are arranged on one side of the second blocking member so that induction of the first and second blocking members is realized when the roll stops, Wherein the molten metal is configured to block penetration of the molten metal into the bearing. 8. The method of claim 7, The permanent magnets 54a of the second blocking member are disposed inside the protruding bushing member 58 protruding from the second blocking member and the protruding bushing member 58 is inserted into the first blocking member 52 And a guide groove portion (60) is further formed to be rotated in this state.

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