KR101511957B1

KR101511957B1 - Cluster type multi-stage rolling mill

Info

Publication number: KR101511957B1
Application number: KR20140044287A
Authority: KR
Inventors: 유문철; 김기주
Original assignee: 태창기계공업(주)
Priority date: 2014-04-14
Filing date: 2014-04-14
Publication date: 2015-04-14

Abstract

The present invention relates to a cluster type multi-stage rolling mill capable of shortening a roll replacement time and easily removing cobles and debris generated at the time of plate breaking, while maintaining the rigidity of the housing.
According to the present invention, the upper roll group 4 disposed above the pass line PL, the lower roll group 5 disposed below the pass line PL, and the upper roll group 4 surrounding the upper roll group 4, An inner housing 2 and 3 partitioned into a lower inner housing 3 surrounding the inner housing 2 and the lower roll group 5 and a pass line PL accommodating the inner housing 2 and 3, An outer housing 1 having an opening 10 through which the inner housing 2 and 3 passes is formed on a side surface of the outer housing 1 and extending in a direction perpendicular to the pass line PL, A guide member 6 slidably guided by the inner housing 2 and 3; a plurality of movable members 7 mounted on the bottom surface of the lower inner housing 3 and moving along the guide member 6; , Fastening means (20) for fastening or releasing the inner housing (2, 3) in the outer housing (1) A clustered multi-stage rolling mill comprising a drawing means (30) for take-off, or the external storage is provided along the gong (2, 3) the guide member (6).

Description

[0001] Cluster type multi-stage rolling mill [0002]

The present invention relates to a cluster type multi-stage rolling mill, and more particularly, to a cluster type multi-stage rolling mill capable of shortening the roll replacement time and easily removing cobles and debris generated during plate breaking, To a rolling mill.

Recently, demands of the users for the quality of the plate produced by rolling various kinds of metal materials become strict, and it is required to shorten the roll replacement time which can cause the production loss and shorten the removal time of the coble generated at the plate breaking .

Conventionally, a rolling mill widely used as a cluster type multi-stage rolling mill is an integrated monoblock type 20-stage cluster type rolling mill. The monobloc 20-cluster type rolling mill has an advantage in that the diameter of the working roll is small and the rigidity of the housing is high, so that the plate material of high strength can be rolled to a precise thickness. However, since the housing is composed of monolithic monoblocks and the center axis of the backup bearing is moved by the rotation of the eccentric ring of the saddle supporting the backup bearing, the gap of the upper and lower work rolls is formed by the geometric relationship, It is difficult to remove the coble that accompanies the occurrence of the breakage of the strip during rolling.

On the other hand, the cluster type 20-speed mill requires a large number of rolls. Conventionally, in the case of exchanging the rolls of such a clustered 20-staged mill, the work rolls can be relatively easily exchanged with roll change cars, but the first intermediate rolls, the second intermediate rolls and the backup bearings are manually operated It is necessary to perform roll changing operation. It is difficult to approach to the driven side where the space is narrow and the disassembly and assembling work is required, and it is difficult to identify the parts and slippery due to the lubricating oil or cooling oil. However, the parts to be assembled and the working jig are heavy, There is a problem that it takes a long time.

In order to solve the problem of the cluster type multistage rolling mill of the integral type housing type, there is provided an upper inner housing which surrounds the upper roll group and a lower inner housing which surrounds the lower roll group, A rolling mill incorporating a housing has been developed. Such a clustered divided inner housing rolling machine can increase the gap between the upper and lower work rolls, and thus it is relatively easy to remove the claws which become valid at the time of plate breaking. However, in addition to the cobles generated at the plate breaking, small pieces are deeply placed in the gap between the intermediate roll yarn and the backup bearing and the inner housing, so that it is still difficult to remove these fragments. , The backup bearings are severely damaged. In this case, the replacement of the rolls necessary for the replacement of the rollers and the resetting of the pass lines thereafter must be performed in an outer housing of a monoblock shape, so that the operation is troublesome and time consuming. In addition, the rolling mill has a problem in that the outer housing is divided into a driving side and an operating side so that the inner housing spreads along the path line direction, so that the rigidity of the rolling mill as a whole is low and the manufacturing cost is high.

Patent Publication No. 10-2002-0068246 (Aug. 27, 2002)

The present invention has been proposed in view of the problems of the conventional cluster type multistage mill as described above, and it is an object of the present invention to shorten the roll replacement time and to easily remove claws and scrap generated in the plate breaking, The present invention is to provide a clustered multi-stage mill with a new structure capable of performing high-quality rolling because the housing has sufficient rigidity while being easily managed.

According to one aspect of the present invention, an upper roll group 4 disposed above the pass line PL, a lower roll group 5 disposed below the pass line PL, An inner housing 2 and 3 partitioned into a lower inner housing 3 surrounding an upper inner housing 2 and a lower roll group 5 surrounding the inner housing 2 and 3, An outer housing 1 having an opening 10 through which the inner housings 2 and 3 are pulled out is formed on the side of the passenger compartment PL; And a plurality of movable members mounted on a bottom surface of the lower inner housing and moving along the guide member, wherein the guide members are slidably guided by the inner housings, 7), fastening means (20) for fastening or releasing the inner housing (2, 3) in the outer housing (1) A clustered multi-stage rolling mill to the interior of the housing (2, 3) characterized in that it comprises a drawing means 30 for withdrawal to the outside or stored along the guide member 6 is provided.

According to another aspect of the present invention, a clustered multi-stage rolling mill is provided, wherein the outer housing (1) is made of monolithic monobloc.

According to another aspect of the present invention, the fastening means 20 is provided on one side of the inner side of the outer housing 1 and includes side surfaces 21 and 22 for pressing or releasing the side surfaces of the inner housings 2 and 3, Wherein the rolling mill is a multi-stage rolling mill.

According to another aspect of the present invention, the fastening means includes a bottom surface 26 disposed on an inner bottom surface of the outer housing 1 to press or release the bottom surface of the inner housing 2, 3 Is provided.

According to another aspect of the present invention, a clustered multi-stage rolling mill is provided, wherein an inner bottom surface of the outer housing 1 is provided with a plurality of lower reinforcement cylinders 11 for supporting the inner housings 2, 3.

According to another aspect of the present invention, a spray holder 42 for supporting a rolling oil spray 41 disposed between the upper roll group 4 and the lower roll group 5 is assembled to the inner housing 2, 3 Wherein the milling machine is a multi-stage mill.

According to another feature of the present invention, the spray holder 42 is interposed and assembled between the upper inner housing 2 and the lower inner housing 3.

According to another aspect of the present invention, the fastening means 20 includes pressure plates 51 and 52 provided at positions facing the upper inner housing 2 and the lower inner housing 3 on the inner side of the outer housing 1, And pressure cylinders (53, 54) for pressing the pressure plates (51, 52) in the horizontal direction.

According to the invention, the inner housing (2, 3) is provided with an upper inner housing (2) surrounding the upper roll group (4) about the pass line and a lower inner housing (3) surrounding the lower roll group The inner housing 2 and the inner housing 3 are securely fastened tightly in the outer housing 1 by tightening means 20 so as to be tightly fastened to the outer housing 1, The inner housing 2 and the inner housing 3 are released and separated from the outer housing so that the inner housing 2 and the inner housing 3 can be guided through the opening 10 of the outer housing 1, 6 so that the upper roll group 4 is separated from the upper inner housing 2 and the lower inner housing 3 from the outside of the outer housing 1 and the upper roll group 4 is separated from the lower roll group 5 So that the rigidity of the housing of the rolling mill can be maintained sufficiently strong, The removal of the piece can be facilitated.

According to the present invention, by manufacturing the outer housing 1 as an integral monoblock, when the split inner housing 2 and 3 are fastened to the outer housing 1 by the fastening means 20, Good rigidity can be exhibited.

According to the present invention, as the fastening means (20), the side surfaces (21, 22) disposed on one side of the inside of the outer housing (1) and pressing or releasing the side surfaces of the inner housings By using the bottom surface paper 26 for pressing or releasing the bottom surface of the inner housings 2 and 3, it has a simple structure and is easy to install in a narrow space, and the tightening and releasing operations are assured, It will not be released.

According to the present invention, since a plurality of lower reinforcing cylinders 11 for supporting the inner housings 2 and 3 are provided in the bottom surface of the outer housing 1, the bottom surface of the bottom surface paper 26 26 can be smoothly moved, the rigidity of the rolling mill housing can be reinforced and the width of the gap of the work roll 12 can be widened.

According to the present invention, the spray holder 42 for supporting the rolling oil spray 41 is assembled to the inner housings 2 and 3 instead of the outer housing 1 to draw out the inner housings 2 and 3 to the outside The spray holder 42 and the rolling oil spray 41 can be taken out together with the inner housings 2 and 3 without interference with the outer housing 1 so that the withdrawal of the inner housings 2 and 3 can be performed smoothly . In addition, when the spray holder 42 is assembled to be interposed between the upper inner housing 2 and the lower inner housing 4, when the inner housings 2 and 3 are pulled out and separated, It is possible to lift up the spray holder 42 or the rolling oil spray 41 immediately after separating the connection with the housing 2 and the lower inner housing 3 and lifting the upper inner housing 2 to remove the inner housing 2, 3) can be performed quickly and smoothly.

Further, according to the present invention, as the fastening means between the outer housing 1 and the side surfaces of the inner housings 2 and 3, the pressing plates 51 and 52 and the pressing cylinders 53 and 54 for horizontally pressing the pressing plates 51 and 52, It is possible to provide a fastening means that is easy to operate while having.

1 is a partially cut side view of a rolling mill of an embodiment of the present invention
Fig. 2 is a partially cutaway side view of the drawn state of the inner housing of the above-
3 is a front structural view of the embodiment
4 is a front view of the outer housing of the above embodiment
5 is a schematic front view of the inner housing of the above embodiment
Fig. 6 is a front view of the inner housing of the above embodiment
Fig. 7 is a side view showing the assembled state of the side fingers in the above embodiment
FIG. 8 is a diagram illustrating an operating state of the side surface paper of the above-
Fig. 9 is an enlarged view of a portion A in Fig. 4
10 is a side view showing the assembly state of the bottom surface of the above embodiment
11 is a view showing the configuration of the bottom surface of the above-
Figure 12 is a side view of the side view of the modified embodiment of the present invention
13 is a flowchart of the separation operation of the embodiment
Figs. 14 and 15 are diagrams showing the configuration of another embodiment of the present invention
16 and 17 are diagrams showing the configuration of another embodiment of the present invention

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially cut-away side view of a rolling mill according to an embodiment of the present invention, FIG. 2 is a cut-away side view and FIG. 3 is a frontal view of the inner housing of the embodiment. As shown in the figure, according to a preferred embodiment of the present invention, a cluster type multi-stage rolling mill in which 20 rolls are gathered is composed of an outer housing 1, an inner housing 2, 3 inserted and assembled into the outer housing 1, . An opening 10 is formed in one side of the pass line in the outer housing 1 so that the inner housing 2, 3 can pass through. The opening 10 is provided with a door 16 having an auxiliary door 17 formed therein. Preferably, the opening 10 is formed on the operating side of the outer housing 1, not on the driven side. The outer housing 1 is preferably made of an integral monoblock having sufficient rigidity.

As shown in FIGS. 5 and 6, the inner housings 2, 3 are divided into an upper inner housing 2 and a lower inner housing 3. The upper inner housing 2 is configured to surround the upper roll group 4 disposed above the pass line PL and the lower inner housing 3 is configured to surround the lower roll group 4 disposed below the pass line PL. 5). The rolling roll of the present invention comprises a pair of working rolls 12 of relatively small diameter, two pairs of first intermediate rolls 13, three pairs of second intermediate rolls 14, And four pairs of backup bearings 15 disposed rearward. The intermediate rolls 13 and 14 of the upper roll group 4 are suspended by the suspension 44 to the upper inner housing 2 as shown in Figure 5 and the backup bearings 15 are supported by the unshown fastening means And is connected and supported by the upper inner housing 2. The number and arrangement of the rolls of the upper and lower roll groups 4 and 5 are appropriately changed according to the kind and specification of the rolling mill. A screw down cylinder 8 is vertically installed on both sides of the outer housing 1 to adjust the gap between the rolls and a plurality of crown control cylinders 9 are interposed between the outer housing 1 and the upper inner housing 2, and a drain hole 18 for releasing the rolling oil passes vertically through the lower inner housing 3 and the outer housing 1 to communicate with each other.

According to the present invention, on the inner bottom surface of the outer housing 1, a guide member 6 in the form of a rail extending in a direction perpendicular to the pass line PL is provided. The guide member 1 is attached to the inside of the outer housing 1 and extends outward to the side of the outer housing 1. [ Preferably, the guide member 6 extends to the operating side which is opposite to the drive side of the outer housing 1. A movable member 7 is mounted on the bottom surface of the lower inner housing 3 and is composed of a plurality of wheels mounted on the guide member 6 to be moved. At one side of the lower inner housing 3, there is provided a drawing means composed of a cylinder 30 which is extended and contracted along the guide member 6. The cylinder 30 is connected to the end of the cylinder rod 31 at a lower end of the lower inner housing 3 so that the inner housing 2 and the inner housing 3 Is pulled out of the outer housing (1) along the member (6) or returned to the inside of the outer housing (1) and housed.

4, a plurality of lower reinforcing cylinders 11 are provided on one side of the guide member 6 on the inner bottom surface of the outer housing 1 to support the inner housings 2, 3 upwardly . The lower reinforcing cylinder 11 is disposed in a balanced manner on the front and rear of the pass line, on the drive side and on the operation side, respectively, so that the inner housings 2, 3 are not opened or struck but maintain good rigidity, The lower reinforcement cylinder 11 and the lower reinforcement cylinder 12 are formed in the inner housing 2 and the inner housing 2, respectively, so that the inner housing 2 and the inner housing 2 can be moved smoothly. So that the lower inner housing 3 is mounted on the guide member 6.

Referring to FIGS. 4, 5 and 7 to 11, the inner housing 2, 3 detachably installed in the outer housing 1 is firmly fastened to the outer housing 1, The fastening means 20 is shown. The fastening means 20 includes a pair of side guides 21 and 22 arranged on one side of the inner surface of the outer housing 1 in the vertical direction and a pair of side guides 21 and 22 provided on the bottom surface of the outer housing 1 26). The upper side edge guide 21 and the lower side edge guide 22 have an inclined surface and include an upper vertical guide cylinder 23 arranged to extend along one side of the inner side of the outer housing 1, And are vertically slidably engaged with the vertical guide cylinder 24, respectively. On the other hand, the side supporting portions 25 and 25 are formed on the side surfaces of the inner housings 2 and 3 abutting the side supporting members 21 and 22, . The base paper 26 is disposed between a pair of lower reinforcing cylinders 11 on the bottom surface of the opening 10 of the outer housing 1 and is horizontally slidably engaged with the horizontal guide cylinder 27. A drain hole (29) is formed in the bottom surface (26) to be aligned with the drain hole (18) of the outer housing (1) in an assembled state. The lower surface of the lower inner housing 3 abuts against the lower surface of the lower surface of the lower housing 2. The lower surface of the lower inner housing 3 is formed with a lower surface supporting portion 28 having an inclined surface engaged with the lower surface. On the other hand, as shown in the enlarged view of FIG. 9, a bolt 36 is engaged with the side support portions 25 and 25, and a guide ring 37 is fitted in the bolt 36. In correspondence therewith, a longitudinal slot 38 is formed in the side guides 21 and 22 so that the side guides 21 and 22 are guided along the guide ring 37 coupled to the bolt 36 in the vertical direction do.

According to this structure, when the vertical guide cylinders 23 and 24 are raised and the cylinder rod of the horizontal guide cylinder 27 is extended, the side guides 21 and 22 disposed inside the outer housing 1 are inserted into the inner housing And the bottom face paper 26 is also pressed so as to engage with the bottom face holding portion 28 so as to be engaged with the outer face of the outer housing 1 and inside The housings (2, 3) are firmly and tightly coupled to further reinforce structural integrity. When the vertical guide cylinders 23 and 24 are lowered and the cylinder rod of the horizontal guide cylinder 27 is contracted, the engagement of the side guides 21 and 22 and the lower surface guide 26 is released, 1 and the inner housings 2, 3 are loosely coupled. 12 shows a modified embodiment of the present invention in which the lower vertical guide cylinder 24 is exposed to the lower portion of the outer housing 1. As shown in Fig. Thus, the installation position of the lower vertical guide cylinder 24 can be appropriately selected in consideration of design conditions and the like.

5 and 6, a rolling oil spray 41 for spraying the rolling oil to the work roll 12 is disposed between the upper roll group 4 and the lower roll group 5, A spray holder 42 for supporting the current spray 41 is assembled to the inner housings 2, 3. When the spray holder 42 is assembled to the inner housings 2 and 3 as described above, when the inner housings 2 and 3 are taken out to one side of the outer housing 1, The spray holder 42 is discharged together with the inner housings 2 and 3 without interference, so that the replacement work of the rolls is simplified. The upper end of the base end of the spray holder 42 is preferably assembled by bolts 47 on one side of the bottom surface of the upper inner housing 2 and the lower end of the base end of the spray holder 42 is fixed to the upper end of the lower inner housing 3 As shown in FIG.

A description will now be made of a disassembling process for replacing a roll of a rolling mill having such a structure. The vertical guide cylinders 23 and 24 are lowered so that the upper side wedge 21 and the lower side guide 22 of the outer housing 1 are engaged with the side support portions 25 and 25 of the inner housing 2 and 3, And the horizontal guide cylinder 27 formed on the inner bottom surface of the outer housing 1 is contracted to release the engagement with the bottom guide portion 28 formed on the bottom surface of the lower inner housing 3, So that the housing 1 and the inner housings 2, 3 are spaced apart from each other. Subsequently, the lower reinforcing cylinder 11 is lowered to seat the inner housings 2 and 3 on the guide member 6, and the door 16 is opened to actuate the cylinder, which is the drawing means 30, Out of the operating side of the outer housing 1 through the opening 10 of the outer housing 1. [

The roll suspension 44 is separated from the upper inner housing 2 and the bolts 47 fastened to the spray holder 44 are removed as shown in Fig. After lifting the upper inner housing 2 with a hoist or the like, the upper inner housing 2 is lifted after slightly separating from the upper roll group 4 by slightly moving in the driving side direction. When the upper roll group 4 is exposed in this way, it can be easily lifted up to a line such as a chain or a rope without using a porter bar or a roll change car. When the upper roll group 4 is removed, the spray holder 42 is lifted and then the lower roll group 5 is also lifted. The assembly sequence of the new rolls proceeds in the reverse order of the release order. On the other hand, during the rolling operation, the regular work rolls 12 are exchanged through the auxiliary door 17 provided on the door 16 in a conventional manner using a conventional roll changing car.

14 and 15 show another embodiment of the present invention in which the inner housing 2 and the inner housing 3 are fastened in the outer housing 1 in place of the side guides 21 and 22 and the guide cylinders 23 and 24 An upper pressing plate 51 and a lower pressing plate 51 mounted on the upper pressing cylinder 53 at positions facing the upper inner housing 2 and the lower inner housing 3 on the inner surface of the outer housing 1, The upper and lower pressing plates 51 and 52 are pressed and tightly contacted with the inner housings 2 and 3 in accordance with the expansion and contraction of the pressurizing cylinders 53 and 54 So that they can be separated from each other. In this way, means for fastening or disengaging the inner housings 2, 3 integrally with the outer housing 1 in the outer housing 1 can be appropriately selected.

16 and 17 show another embodiment of the present invention in which the guide member is formed in the form of a guide groove 6a formed on the inner bottom surface of the outer housing 1 rather than in the form of a rail, A plurality of rollers 7a are arranged on both sides, rather than a wheel, and the bottoms 26 are arranged with a relatively large width therebetween. A pair of lower reinforcing cylinders 11a provided at the lower portion of the outer housing 1 are passed through the through holes 29a formed in the bottom surface paper 26 and the inner housings 2, In the vertical direction. In this embodiment, the gap between the inner bottom surface of the outer housing 1 and the bottom surface of the inner housings 2 and 3 is smaller than in the above-described embodiment, resulting in a compact and stable rolling mill structure.

Claims

An upper roll group 4 disposed above the pass line PL and a lower roll group 5 disposed below the pass line PL and an upper inner housing 2 surrounding the upper roll group 4. [ And a lower inner housing (3) surrounding the lower roll group (5), and an inner housing (2) An outer housing 1 provided with an opening 10 through which the housings 2 and 3 are drawn out and an inner housing 2 extending from the inner bottom surface of the outer housing 1 and extending in a direction perpendicular to the pass line PL, A plurality of movable members 7 mounted on a bottom surface of the lower inner housing 3 and moving along the guide member 6 and a guide member 6 slidably guided in the inner housing 3 (20) for fastening or releasing the inner housing (2, 3) in the outer housing (1), and an inner housing (2, 3) According to DE member 6 comprises a take-off means (30) for take-off or to an external storage,
Characterized in that the fastening means (20) comprises side surfaces (21, 22) arranged on one side of the inside of the outer housing (1) and pressing or releasing the side surfaces of the inner housings (2,3) Multistage mills.

2. The clustered multi-stage rolling mill according to claim 1, wherein the outer housing (1) is made of an integrated monobloc.

delete

3. The apparatus according to claim 1 or 2, wherein the fastening means includes a bottom surface paper (26) disposed on an inner bottom surface of the outer housing (1) to press or release the bottom surface of the inner housings A clustered multistage mill.

3. The clustered multi-stage rolling mill according to claim 1 or 2, wherein a plurality of lower reinforcing cylinders (11) for supporting the inner housings (2,3) are provided on the inner bottom surface of the outer housing (1).

3. A method according to claim 1 or 2, characterized in that a spray holder (42) for supporting a rolling oil spray (41) disposed between the upper roll group (4) and the lower roll group (5) Wherein the first and second milling rollers are assembled.

7. The clustered multi-stage rolling mill according to claim 6, wherein the spray holder (42) is interposed between the upper inner housing (2) and the lower inner housing (3).

3. The apparatus according to claim 1 or 2, wherein the fastening means (20) comprises a pressing plate (51, 52) provided at a position facing the upper inner housing (2) and the lower inner housing (3) on the inner surface of the outer housing (1) 52), and pressure cylinders (53, 54) for pressing the pressure plates (51, 52) in the horizontal direction.