KR20020031258A - Back up roll setting apparatus of tandem cold mill - Google Patents

Back up roll setting apparatus of tandem cold mill Download PDF

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Publication number
KR20020031258A
KR20020031258A KR1020000062346A KR20000062346A KR20020031258A KR 20020031258 A KR20020031258 A KR 20020031258A KR 1020000062346 A KR1020000062346 A KR 1020000062346A KR 20000062346 A KR20000062346 A KR 20000062346A KR 20020031258 A KR20020031258 A KR 20020031258A
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KR
South Korea
Prior art keywords
roll
hydraulic cylinder
reinforcement
rail
cold rolling
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KR1020000062346A
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Korean (ko)
Inventor
강동수
김남국
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이구택
주식회사 포스코
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Priority to KR1020000062346A priority Critical patent/KR20020031258A/en
Publication of KR20020031258A publication Critical patent/KR20020031258A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/32—Roll changing stools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

PURPOSE: A setting apparatus for resting a back up roll on rail without rolling is provided. CONSTITUTION: In a back up roll(1) setting apparatus of tandem cold mill using a crane, the apparatus comprises a plurality of hydraulic cylinders(12) that are installed on a base between rails; guide rolls(10a-10g) bearing coupled between the hydraulic cylinder and a ram(11); and a hydraulic control part that controls operation of the hydraulic cylinder according to signal from computer. Further, a shock absorber is installed in the hydraulic cylinder to buffer the impact occurring when setting a back up roll.

Description

냉간압연기의 보강롤 안착장치{Back up roll setting apparatus of tandem cold mill}Back up roll setting apparatus of tandem cold mill}

본 발명은 보강롤 안착장치에 관한 것으로, 특히 냉간압연시 작업롤의 휨 발생을 방지해주는 보강롤을 교체할 때 레일상에 상기 보강롤이 유동없이 안착되도록 한 냉간압연기의 보강롤 안착장치에 관한 것이다.The present invention relates to a reinforcing roll seating device, and more particularly, to a reinforcing roll seating device of a cold rolling machine in which the reinforcing roll is seated on a rail without flow when replacing the reinforcing roll that prevents bending of the work roll during cold rolling. will be.

일반적으로 냉간압연기는 작업롤과, 보강롤, 중간롤로써 연속 압연을 행하는 설비로서 보강롤(백업롤)과 작업롤(워크롤)사이에 중간롤을 삽입하여 상부 3개 롤, 하부 3개 롤이 수직으로 6단이 되게 설치한 압연기이다.In general, the cold rolling mill is a work roll, reinforcement roll, and intermediate roll that is a continuous roll. An intermediate roll is inserted between a reinforcement roll (backup roll) and a work roll (work roll) to make the upper three rolls and the lower three rolls. This rolling mill is installed in six vertical stages.

상기 작업롤은 냉간 압연을 위한 실작업 롤이고, 상기 보강롤은 상기 작업롤이 압연시 롤의 휨 발생을 방지해주는 역할을 하며, 상기 중간롤은 보강롤의 압하력을 작업롤에 전달시켜 주게 된다.The work roll is a real work roll for cold rolling, the reinforcement roll serves to prevent the bending of the roll when the work roll is rolled, the intermediate roll to transfer the reduction force of the reinforcement roll to the work roll do.

도 1은 종래 크레인을 통한 보강롤의 이동시 보강롤의 유동상태를 나타낸 사시도이고, 도 2는 종래 보강롤이 레일상에 설치된 것을 나타낸 측단면도이며, 도 3은 종래 레일상의 보강롤을 스탠드내에 삽입하는 것을 나타낸 사시도로서, 상기 보강롤(1)은 어느 일정 기간 동안 사용하면 롤의 수명이 다되어 정기적으로 교체하거나, 압연 도중 판파단에 의해 롤 표면에 결함이 발생하게 된다.1 is a perspective view showing the flow state of the reinforcement roll when moving the reinforcement roll through the conventional crane, Figure 2 is a side cross-sectional view showing that the conventional reinforcement roll is installed on the rail, Figure 3 is a conventional reinforcement roll on the rail inserted into the stand As a perspective view showing that the reinforcing roll 1 is used for a certain period of time, the life of the roll is exhausted, or the roll is periodically replaced, or a defect occurs on the surface of the roll due to plate breaking during rolling.

상기 보강롤(1)은 약 50톤에 달하는 중량물이기 때문에 천정크레인을 통해 교체하고자 하는 스탠드 전방 하부에 설치된 레일(4)에 안착시킨 후, 유압 실린더(9)로 스탠드내에 삽입시킨다.Since the reinforcement roll 1 is a weight of up to about 50 tons, the reinforcement roll 1 is seated on the rail 4 installed in the lower part of the front of the stand to be replaced by the ceiling crane, and then inserted into the stand by the hydraulic cylinder 9.

이때, 상기 천정크레인에 와이어 로프(2)로 줄걸이를 한 후 스탠드 전방에 이동시키는 과정에서 상기 보강롤의 유동을 방지하기 위하여 천정크레인을 상하,좌우로 이동시켜야 하므로 연속 조작에 따른 크레인의 브레이크 마모와 레일(4)상에 안착시키는 과정에서 작업시간이 장시간 소요되는 문제점이 있었다.At this time, in order to prevent the flow of the reinforcement roll in the process of moving the front of the stand after the wire hanger with the wire rope (2) on the ceiling crane, the crane crane according to the continuous operation because the brake must be moved up and down, left and right There was a problem in that work takes a long time in the process of wear and mounting on the rail (4).

또한, 상기 보강롤(1)의 교체시 흔들림에 의해 베어링 하우징(5,6)과 벽체(3)에 파손이 발생되고, 보강롤(1)이 레일(4)의 정위치에 안착되지 않을 경우 휠(7,8)의 고장이 유발되는 문제점이 있었다.In addition, when the reinforcement roll 1 is replaced, the bearing housings 5 and 6 and the wall 3 are damaged by shaking, and the reinforcement roll 1 is not seated in the rail 4 at the correct position. There was a problem that the failure of the wheels 7, 8 is caused.

본 발명은 전술한 종래 기술의 문제점을 해결하기 위해 창안된 것으로서, 보강롤의 교체에 따른 유동이 없이 안전하고 신속하게 레일상에 안착시켜 파손이나 고장을 방지하고 생산성을 높일 수 있는 냉간압연기의 보강롤 안착장치를 제공함에 그 목적이 있다.The present invention was devised to solve the above-mentioned problems of the prior art, and reinforcement of a cold rolling mill that can be safely and quickly seated on a rail without flow due to replacement of a reinforcement roll to prevent breakage or failure and increase productivity. The purpose is to provide a roll seating device.

도 1은 종래 크레인을 통한 보강롤의 이동시 보강롤의 유동상태를 나타낸 사시도.1 is a perspective view showing a flow state of the reinforcement roll when moving the reinforcement roll through a conventional crane.

도 2는 종래 보강롤이 레일상에 설치된 것을 나타낸 측단면도.Figure 2 is a side cross-sectional view showing that the conventional reinforcement roll is installed on the rail.

도 3은 종래 레일상의 보강롤을 스탠드내에 삽입하는 것을 나타낸 사시도.Figure 3 is a perspective view showing the insertion of the reinforcement roll on the conventional rail in the stand.

도 4는 본 발명에 따른 냉간압연기의 보강롤 안착장치의 사용상태를 나타낸 사시도.Figure 4 is a perspective view showing a state of use of the reinforcing roll seating device of the cold rolling mill according to the present invention.

도 5는 본 발명에 따른 냉간압연기의 보강롤 안착장치에 있어서의 유압실린더와 유도롤의 구성을 나타낸 분해사시도.Figure 5 is an exploded perspective view showing the configuration of the hydraulic cylinder and the guide roll in the reinforcing roll seating device of a cold rolling mill according to the present invention.

도 6은 본 발명의 설치상태를 나타낸 정면도.Figure 6 is a front view showing the installation of the present invention.

도 7은 본 발명의 설치상태를 나타낸 측면도.Figure 7 is a side view showing the installation of the present invention.

도 8은 본 발명에 따른 냉간압연기의 보강롤 안착장치의 작용을 나타낸 측면도.Figure 8 is a side view showing the action of the reinforcing roll seating device of a cold rolling mill according to the present invention.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1 : 보강롤 2 : 작업롤1: reinforcement roll 2: work roll

4 : 레일 10a~10g : 유도롤4: rail 10a ~ 10g: guide roll

11 : 램 12 : 유압실린더11: ram 12: hydraulic cylinder

13 : 완충기 14 : 유압제어부13: shock absorber 14: hydraulic control unit

15 : 컴퓨터 17 : 베어링15: Computer 17: Bearing

상기한 목적을 달성하기 위하여 냉간압연기의 보강롤을 크레인을 통해 스탠드 전방의 레일상에 안착시키는 장치에 있어서, 상기 레일사이의 베이스상에 다수개 설치된 유압실린더와; 상기 유압실린더의 램 사이에 베어링결합된 유도롤과; 컴퓨터의 신호에 따라 상기 유압실린더의 작동을 제어하는 유압제어부를 포함하여 구성된 것을 특징으로 하는 냉간압연기의 보강롤 안착장치가 제공된다.An apparatus for seating a reinforcement roll of a cold rolling mill on a rail in front of a stand through a crane to achieve the above object, comprising: a plurality of hydraulic cylinders installed on a base between the rails; An induction roll bearing coupled between the ram of the hydraulic cylinder; Provided is a reinforcing roll seating device for a cold rolling mill, comprising a hydraulic control unit for controlling the operation of the hydraulic cylinder according to a signal from a computer.

이와 같은 본 발명에서 상기 유압실린더에는 상기 보강롤의 유도롤 안착에 따른 충격을 흡수하는 완충기가 설치된 것을 특징으로 한다.In the present invention as described above, the hydraulic cylinder is characterized in that the shock absorber is installed to absorb the impact of the guide roll seat of the reinforcement roll.

이하, 첨부 도면을 참조하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도 4 내지 도 8은 본 발명에 따른 냉간압연기의 보강롤 안착장치의 일실시예를 나타낸 것으로서, 이에 따른 보강롤 안착장치는 레일사이의 베이스상에 다수개 설치된 유압실린더와; 상기 유압실린더의 램 사이에 베어링결합된 유도롤과; 컴퓨터의 신호에 따라 상기 유압실린더의 작동을 제어하는 유압제어부로 이루어져 있다.4 to 8 show an embodiment of a reinforcing roll seating device of a cold rolling mill according to the present invention, the reinforcing roll seating device according to the present invention includes a plurality of hydraulic cylinders installed on the base between the rails; An induction roll bearing coupled between the ram of the hydraulic cylinder; The hydraulic control unit for controlling the operation of the hydraulic cylinder in accordance with the signal of the computer.

도면을 참조하여 설명하면, 도 4, 도 6 및 도 8에 도시된 바와 같이 상기 보강롤(1)이 안착되는 양 레일(4)의 사이에서 상기 레일(4)의 설치면과 하방향으로 소정의 거리를 두고 베이스(18)가 고정설치되어 있고, 상기 베이스(18) 상부에서 폭방향으로 7개의 유압실린더(12)가 설치되며, 도 5 및 도 7에 도시된 바와 같이, 상기 유압실린더(12)의 상부에서 상,하로 이동하는 램(11)의 상부를 관통하여 유도롤(10a~10g)이 결합되어있다.Referring to the drawings, as shown in FIGS. 4, 6, and 8, the mounting surface of the rail 4 and the mounting surface of the rail 4 are disposed downwardly between the rails 4 on which the reinforcing rolls 1 are seated. The base 18 is fixedly spaced apart from each other, and seven hydraulic cylinders 12 are installed in the width direction from the base 18. As shown in FIGS. 5 and 7, the hydraulic cylinders ( The guide rolls 10a to 10g are coupled to each other by penetrating the upper portion of the ram 11 moving upward and downward from the upper portion of the 12).

즉, 유도롤(10a~10g)의 양단부에서 돌출된 나사부가 베어링(17) 및 상기 램(11)을 관통하여 너트(16)결합되어 있다.That is, the threaded portion protruding from both ends of the guide rolls 10a to 10g is coupled to the nut 16 through the bearing 17 and the ram 11.

또한, 도 4 및 도 7에 도시된 바와 같이 상기 유압실린더(12)에는 상기 보강롤(1)의 유도롤(10a~10g) 안착에 따른 충격을 흡수하기 위해 완충기(Accumulator)(13)가 연결설치되어 있고, 도 8에 도시된 바와 같이컴퓨터(15)로부터 보강롤(1)의 직경 신호를 수신받아 각 유압실린더(12)의 램(11)의 높이, 즉 유도롤(10a~10g)이 보강롤(1)의 표면을 따라 접촉할 수 있도록 하는 유압제어부(14)가 상기 각 유압실린더(12)에 연결되어 있다.In addition, as shown in FIGS. 4 and 7, the hydraulic cylinder 12 is connected to an accumulator 13 to absorb shocks caused by seating the rolls 10a to 10g of the reinforcement roll 1. 8, receiving the diameter signal of the reinforcement roll 1 from the computer 15 as shown in FIG. 8, the height of the ram 11 of each hydraulic cylinder 12, that is, the guide rolls 10a to 10g, A hydraulic control unit 14 for contacting along the surface of the reinforcing roll 1 is connected to each of the hydraulic cylinders 12.

이하에서는 상기와 같은 구성을 갖는 본 발명의 작용을 설명한다.Hereinafter, the operation of the present invention having the configuration as described above.

연삭 작업을 마친 후 준비된 보강롤(1)을 교체하고자 할 경우, 크레인으로 보강롤(1)을 스탠드 전방 레일(4) 위치까지 이동시키고, 상기 유압제어부(14)는 컴퓨터(15)를 통해 상기 보강롤(1)의 직경을 수신받아 상기 유압제어부(14)를 통해 상기 유압실린더(12)의 각 램(11)의 높이를 조절(유도롤이 보강롤 표면에 접촉할 수 있도록)한다.When the reinforcement roll (1) prepared after the grinding operation is to be replaced, move the reinforcement roll (1) to the position of the stand front rail (4) by a crane, and the hydraulic control unit 14 through the computer 15 The diameter of the reinforcement roll 1 is received and the height of each ram 11 of the hydraulic cylinder 12 is adjusted through the hydraulic control unit 14 so that the guide roll can contact the surface of the reinforcement roll.

즉, 중심부 유도롤(10d)을 중심으로 좌,우측 유도롤의 높이가 점차 높아지도록 상기 유압실린더(12)의 램(11)의 높이가 조절되며, 크레인 운전자에 의해서 보강롤(1)이 그 중심선(30)으로부터 어느 정도 좌(L),우측(R)으로 벗어나더라도 상기 좌,우측 유도롤에 의해 가이드되어 보강롤(1)이 중심부 유도롤(10d)의 상부에 안착된다.That is, the height of the ram 11 of the hydraulic cylinder 12 is adjusted so that the height of the left and right guide rolls gradually increases about the center guide roll 10d, and the reinforcement roll 1 is moved by the crane driver. The reinforcement roll 1 is guided by the left and right guide rolls so that the reinforcement roll 1 is seated on the upper portion of the center guide roll 10d even if it deviates to the left (L) and the right side R to some extent from the center line 30.

즉, 도 8에 도시된 바와 같이 보강롤(1)이 중심선(30)으로부터 좌,우측으로 이탈(1L,1R)되어 약간의 유동이 있더라도 최외측 유도롤(10a,10g)에 의해 보강롤(1)이 중심부 유도롤(10d)로 미끄럼 이동하여 유도롤(10a~10g) 상부에 안착된다.That is, as shown in FIG. 8, the reinforcement roll 1 is separated from the center line 30 to the left and right sides by 1L and 1R so that even if there is a slight flow, the reinforcement rolls 10a and 10g may be used. 1) is slid to the center guide roll (10d) is seated on the guide roll (10a ~ 10g) top.

상기와 같은 과정에서 상기 유압실린더(12)에 연결된 완충기(13)는 보강롤(1)이 유도롤(10a~10g)에 안착하는 과정에서 발생되는 충격을 완화시키며,상기와 같이 보강롤(1)의 안착이 이루어진 후에는 상기 유압제어부(14)를 통해 유압실린더(12)의 램(11)의 높이를 낮춤에 따라 보강롤(1)이 레일(4) 상부에 안착되며, 이후 전술한 유압 실린더(9)로 스탠드내에 삽입시켜 냉간압연을 실시한다.The shock absorber 13 connected to the hydraulic cylinder 12 in the above process to mitigate the impact generated in the process of the reinforcing roll 1 is seated on the guide roll (10a ~ 10g), the reinforcement roll (1) After the seating has been made, the reinforcement roll 1 is seated on the upper rail 4 as the height of the ram 11 of the hydraulic cylinder 12 is lowered through the hydraulic control unit 14. It is inserted into the stand by the cylinder 9 and cold-rolled.

이상에서와 같이, 본 발명에 따르면 보강롤을 레일에 안착시키는 과정에서 보강롤의 유동을 줄일 수 있으므로 크레인의 이동횟수 감소에 따라 크레인의 브레이크 마모가 줄게되고, 보강롤 안착시간의 감소로 생산량 향상을 도모할 수 있는 효과가 있다.As described above, according to the present invention can reduce the flow of the reinforcement roll in the process of seating the reinforcement roll on the rail to reduce the brake wear of the crane according to the reduction of the number of movement of the crane, improve the production amount by reducing the reinforcement roll seating time There is an effect that can be planned.

또한, 보강롤의 교체에 따른 베어링 하우징과 벽체부위의 파손 감소와 함께 휠의 고장이 방지되는 효과가 있다.In addition, there is an effect that the failure of the wheel with the reduction of the damage to the bearing housing and the wall portion due to the replacement of the reinforcement roll.

Claims (2)

냉간압연기의 보강롤을 크레인을 통해 스탠드 전방의 레일상에 안착시키는 장치에 있어서,In the device for seating the reinforcement roll of the cold rolling mill on the rail in front of the stand via a crane, 상기 레일사이의 베이스상에 다수개 설치된 유압실린더와;A plurality of hydraulic cylinders installed on the base between the rails; 상기 유압실린더의 램 사이에 베어링결합된 유도롤과;An induction roll bearing coupled between the ram of the hydraulic cylinder; 컴퓨터의 신호에 따라 상기 유압실린더의 작동을 제어하는 유압제어부를 포함하여 구성된 것을 특징으로 하는 냉간압연기의 보강롤 안착장치.Reinforcing roll seating device of the cold rolling mill, characterized in that it comprises a hydraulic control unit for controlling the operation of the hydraulic cylinder in accordance with a signal from the computer. 제 1항에 있어서, 상기 유압실린더에는 상기 보강롤의 유도롤 안착에 따른 충격을 흡수하는 완충기가 설치된 것을 특징으로 하는 냉간압연기의 보강롤 안착장치.The reinforcing roll seating device of a cold rolling mill according to claim 1, wherein the hydraulic cylinder is provided with a shock absorber for absorbing the impact of the guide roll seating of the reinforcing roll.
KR1020000062346A 2000-10-23 2000-10-23 Back up roll setting apparatus of tandem cold mill KR20020031258A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053404B1 (en) * 2003-12-26 2011-08-01 주식회사 포스코 Multi-stage rolling equipment during rolling of wire rod rolling mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053404B1 (en) * 2003-12-26 2011-08-01 주식회사 포스코 Multi-stage rolling equipment during rolling of wire rod rolling mill

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