KR101732979B1 - Apparatus for braking strip - Google Patents

Apparatus for braking strip Download PDF

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Publication number
KR101732979B1
KR101732979B1 KR1020150170415A KR20150170415A KR101732979B1 KR 101732979 B1 KR101732979 B1 KR 101732979B1 KR 1020150170415 A KR1020150170415 A KR 1020150170415A KR 20150170415 A KR20150170415 A KR 20150170415A KR 101732979 B1 KR101732979 B1 KR 101732979B1
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KR
South Korea
Prior art keywords
strip
braking
roller
braking roller
elevating member
Prior art date
Application number
KR1020150170415A
Other languages
Korean (ko)
Inventor
조현관
박순복
김기수
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020150170415A priority Critical patent/KR101732979B1/en
Application granted granted Critical
Publication of KR101732979B1 publication Critical patent/KR101732979B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B21B39/088—Bumpers, stopping devices

Abstract

A strip braking device is disclosed. The strip braking device according to the embodiment of the present invention includes a first braking roller installed to move up and down from a top of a strip, a second braking roller installed so as to be able to move up and down from a lower portion of the strip, a first braking roller and a second braking roller And a lift device for moving the strip so as to engage with both upper and lower surfaces of the strip to perform braking of the strip, wherein either one of the first braking roller and the second braking roller is a concave roller and the other is a convex roller.

Description

[0001] APPARATUS FOR BRAKING STRIP [0002]

The present invention relates to a strip braking device, and more particularly, to a strip braking device that stops the movement of a strip when a plate break occurs in the strip.

Generally, when cold-rolled coils are produced, the side of a single coil is welded in a welder to continuously move the strip. If the material and thickness of the coil are different from the welding conditions, or if foreign matter penetrates on the weld, Fracture occurs.

If such plate breakage occurs, it falls into the underground looper, which causes a problem that it takes a long time to recover.

Korean Patent Publication No. 2004-0108424 (published on December 24, 2004)

Embodiments of the present invention are intended to provide a strip braking device that smoothly performs braking of strips coated with rolling oil and prevents strips from being detached from the transfer line when sheet strip breakage occurs.

According to an aspect of the present invention, there is provided a stapler comprising: a first braking roller provided so as to be able to move up and down on a strip; a second braking roller installed so as to be able to move up and down at a lower portion of the strip; and a second braking roller And a lifting device for moving the upper and lower sides of the strip to perform braking of the strip, wherein one of the first braking roller and the second braking roller is a concave roller and the other is a convex roller A strip braking device may be provided.

The first frame may be provided with a support roller for supporting the strip at one end of the frame, and the first brake roller may be installed at the other end of the frame. have.

Further, when the strip is braked, the first braking roller and the second braking roller are engaged with the upper surface and the lower surface of the strip, so that both sides in the width direction of the strip can be bent.

The first elevating member and the second elevating member may be coupled to each other so that the first elevating member and the second elevating member can move together with the first elevating member and the second braking roller, have.

The fixing frame further includes a first guide hole for guiding the up and down movement of the first elevating member and a second guide hole for guiding the up and down movement of the second elevating member, 2 guide holes may be formed.

The first elevating member and the second elevating member may include a first rack gear meshed with the pinion and a second rack gear meshed with the pinion, .

The first elevating member may include a horizontal guide member having a horizontal elongated hole to which the other end of the seesaw frame is slidably engaged, a second guide member vertically connected to the horizontal guide member and moving along the first guide hole, And a first lifting body on which a gear is formed.

The second elevating member includes a second lifting body connected to the second braking roller and moving along the second guide hole and having the second rack gear.

The strip braking device may also be located between the looper installed in the transfer line for cleaning the strip and the cleaning facility.

Embodiments of the present invention can improve the braking force by significantly reducing the occurrence of slip by the rolling oil as the strips coated with the rolling oil are engaged by the concave roller and the convex roller during braking of the strip.

FIG. 1 shows an example of a case where plate stripping of a strip occurs in a strip cleaning line according to an embodiment of the present invention.
2 is a perspective view illustrating a strip braking device according to an embodiment of the present invention.
3 shows a part of a landing gear according to an embodiment of the present invention.
4 illustrates a strip engaged with a first braking roller and a second braking roller according to an embodiment of the present invention.
5 is an operational state diagram of a strip braking apparatus for braking strip according to an embodiment of the present invention.
6 is an operational state diagram of a seesaw frame during braking in accordance with an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

FIG. 1 shows an example of a case where plate stripping of a strip occurs in a strip cleaning line according to an embodiment of the present invention.

Referring to FIG. 1, the cold-rolled strip S performs a cleaning operation in the cleaning facility 2 to remove surface residual rolling oil on the strip S before heat treatment in the heat treatment furnace 3 for removing residual stress.

For example, the strip S wound on the take-up reel 1 for continuous feeding of the strip S is fed to the laser welder 4 while being unwound and connected to the preceding strip by the laser welder 4, Is sent to the cleaning facility 2 via a looper 5 that compensates for the conveying speed deviation of the strip S at the time of operation and the strip S cleaned in the cleaning facility 2 is sent to the heat treatment furnace 3 And is wound on the take-up reel 6 after heat treatment.

At this time, the welded portion of the strip S may be welded due to the incorporation of various foreign substances. Such a welded portion is torn when it passes through the deming roll 2a of the cleaning equipment 2, thereby causing plate breakage.

When the plate S is broken as described above, the strip S takes a long time to recover to the original state as it falls into the looper 5, and in particular, the rolling oil S applied to the surface of the strip S The work is delayed by the slip during the restoration work.

A tension change is detected between the looper 5 and the cleaning facility 2 by the take-up reel 6 when the plate S breaks in the plate S, and then, before the strip S falls onto the looper 5 A strip braking device 20 may be provided to quickly perform the braking of the strip S to prevent the strip S from deviating out of the transfer line.

FIG. 2 is a perspective view illustrating a strip braking apparatus according to an embodiment of the present invention, FIG. 3 is a view showing a part of a landing gear according to an embodiment of the present invention, And a strip engaged with the roller and the second braking roller.

2 to 4, the strip braking device 20 according to the embodiment of the present invention includes a first braking roller 30 installed to move up and down on a strip S moving along a transfer line, A second braking roller 40 provided so as to move up and down at a lower portion of a strip S facing the first braking roller 30 and a second braking roller 40 interlocked with the first braking roller 30 and the second braking roller 40 And an elevating device 50 for elevating and lowering.

The first braking roller 30 is coupled to a seesaw frame 60 installed in a fixed frame 21 supported on the floor so as to be able to perform a seesaw motion with respect to the rotary shaft 22 and can move up and down.

The seesaw frame 60 includes a pair of roller frames 61, 62 spaced apart from each other.

At the center of the pair of roller frames 61 and 62, a rotary shaft 22 rotatably coupled to the stationary frame 21 can be formed. At the rear end of the pair of roller frames 61 and 62, A support roller 63 for guiding the entry of the strip S into between the braking roller 30 and the second braking roller 40 is rotatably installed at the tip of the pair of roller frames 61, The first braking roller 30 can be fixedly installed.

The seesaw frame 60 can be connected to the first elevation member 70 and the seesaw frame 60 can perform seesaw motion forward and backward with respect to the rotation axis 22 as the first elevation member 70 moves up and down can do.

The first elevating member 70 includes a horizontal guiding member 72 having a horizontally elongated hole 71 and a first elevating body 73 vertically connected to the lower portion of the horizontal guiding member 72, .

The guide protrusion 64 protrudes from both sides of the front end of the seesaw frame 60 and is engaged with the horizontal elongated hole 71. When the seesaw frame 60 seesaw motion, As shown in Fig.

The fixed frames 21 are provided with a pair arranged to face each other.

The first lifting body 73 is slidably coupled to the front side of the fixed frame 21 so that the first lifting body 73 can be slidably moved up and down and the sees frame 60 is rotatably coupled to the rear side of the fixed frame 21.

The first lifting body 73 can be slid up and down along the first rail groove 23 extending in the vertical direction from the front side of the fixed frame 21. [

A first rail 74 is slidably coupled to the first rail groove 23 on the side surface of the first lifting body 73. The first rail 74 is protruded outward to support the first guide hole 25 A first locking protrusion 75 may be provided to be coupled with the first locking protrusion 75.

The first engaging protrusion 75 can prevent the first lifting body 73 from separating from the fixed frame 21. [

The second braking roller 40 can be slid up and down along the second rail groove 24 formed in the fixed frame 21 up and down at a rear position spaced apart from the first rail groove 23 by a predetermined distance.

The second braking roller 40 is connected to the second elevating member 80 and the second elevating member 80 is moved up and down along the second rail groove 24 formed in the fixed frame 21, 2 movable up and down together with the elevating member 80.

The second elevating member 80 includes a rod-shaped second lifting body 83 having a long vertical length and the second braking roller 40 is connected to the second lifting body 83 via the connecting rod 41 Can be connected.

A second rail 81 is slidably engaged with the second rail groove 24 on the side surface of the second lifting body 83. The second rail 81 is protruded outward to form a second guide hole 26 And may be provided with a locking protrusion 82 that is coupled through.

The second locking projection 82 prevents the second lifting body 83 from detaching from the fixed frame 21.

The elevating device 50 is for elevating and lowering the first braking roller 30 and the second braking roller 40 in cooperation with each other and includes a lifting motor 51 for providing power, A first rack gear 77 provided on the first lift member 70 so as to be engaged with both sides of the pinion 52 and a second rack gear provided on the second lift member 80, (84).

When the pinion 52 is rotated by the elevation motor 51, the first rack gear 77 and the second rack gear 84, which are engaged with the pinion 52, The first elevating member 70 and the second elevating member 80 are moved up and down in opposite directions.

That is, when the pinion 52 rotates in one direction (clockwise), the first braking roller 30 and the second braking roller 40 connected to the first and second lifting members 70 and 80, respectively, The first braking roller 30 and the second braking roller 40 move in directions away from each other when the pinion 52 rotates in the other direction (counterclockwise direction).

When the tension sensed by the take-up reel 6 instantaneously drops, the control unit controls the pinion 52 to rotate clockwise through the lifting motor 51 So that the first braking roller 30 and the second braking roller 40 are moved so as to engage with the upper surface and the lower surface of the strip S disposed therebetween.

One of the first braking roller 30 and the second braking roller 40 is provided with a convex roller so as to minimize the slip and improve the braking force when engaged with the strip S, And may be provided as a concave roller. Here, the convex roller has a convex center in the axial direction of the roller, and the concave roller is concave in the axial center of the roller.

In this case, when the first braking roller 30 and the second braking roller 40 are engaged with the strip S and are brought into close contact with each other, both sides of the strip S in the width direction are bent as shown in FIG. 4, . Therefore, it is possible to perform robust braking even if the rolling oil applied to the surface of the strip S remains.

Hereinafter, the operation of the strip braking device according to the embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG.

5 and 6, the strip S released from the take-up reel 1 passes through the stripper braking device 20 via the looper 5, and then moves to the cleaning device 2. [

In the strip braking device 20, the strip S moves along the conveying line while the lower surface of the supporting roller 63 is supported.

At this time, the first braking roller 30 and the second braking roller 40 are disposed at positions spaced apart from the upper and lower portions of the strip S, respectively.

When a plate break of the strip S occurs and a change in the tension of the strip S is sensed by the take-up reel 6, the control unit drives the elevation motor 51 to rotate the pinion 52 in one direction.

When the pinion 52 rotates, the first lift member 70 and the second lift member 80 are rotated by the first rack gear 77 and the second rack gear 84 engaged with the pinion 52, And moves in the direction in which the roller 30 and the second braking roller 40 come close to each other.

The strip S passing between the first braking roller 30 and the second braking roller 40 is in contact with the first braking roller 30 and the second braking roller 40, Braking is performed.

At this time, as both sides of the strip S in the width direction are bent and braked, the slip phenomenon is remarkably reduced even if the rolling oil remains on the surface of the strip S.

As the seesaw frame 60 connected to the first braking roller 30 rotates upward with respect to the rotation shaft 22, the support roller 63 bends the strip S to add the braking frictional force, S is further improved.

5: looper, 20: strip braking device,
21: fixed frame, 22: rotating shaft,
30: first braking roller, 40: second braking roller,
50: elevating device, 51: elevating motor,
52: pinion, 60: seesaw frame,
70: first elevating member, 71: horizontal slotting,
73: first lifting body, 77: first rack gear,
80: second elevating member, 83: second elevating body,
84: 2nd rack gear.

Claims (9)

A strip braking device positioned between a looper installed in a transfer line for cleaning a strip and a cleaning facility,
A first braking roller installed so as to be able to move up and down at an upper portion of the strip;
A second braking roller provided so as to be able to move up and down at a lower portion of the strip; And
And an elevating device for moving the first braking roller and the second braking roller in such a manner that the first braking roller and the second braking roller are engaged with both the upper and lower surfaces of the strip when the strip breakage of the strip occurs,
Wherein one of the first braking roller and the second braking roller is a concave roller and the other is a convex roller. The method according to claim 1,
Wherein the first frame is provided with a support roller for supporting the strip at one end of the frame, a first braking roller provided at the other end of the frame,
Wherein the strip is bent at two points supported by the support roller and the first braking roller upon braking the strip. The method according to claim 1,
Wherein when the strip is braked, the first braking roller and the second braking roller are engaged with the upper surface and the lower surface of the strip, thereby bending both widthwise sides of the strip. 3. The method of claim 2,
Wherein the lift device includes a first elevating member connected to the other end of the seesaw frame and a second elevating member connected to the second braking roller, wherein the first elevating member and the second elevating member are connected to each other, Braking device. 5. The method of claim 4,
Further comprising a fixed frame for rotatably supporting the rotating shaft,
Wherein the fixed frame includes a first guide hole for guiding upward and downward movement of the first elevating member and a second guiding hole for guiding the up and down movement of the second elevating member. 6. The method of claim 5,
Wherein the first elevating member and the second elevating member each include a first rack gear and a second rack gear which mesh with the pinion, Comprising a strip braking device. The method according to claim 6,
The first elevating member includes a horizontal guide member having a horizontal elongated hole coupled to the other end of the seesaw frame so as to be slidable, a second guiding member vertically connected to the horizontal guiding member and moving along the first guide hole, And a first lifting body on which the first lifting body is formed. The method according to claim 6,
And the second lifting member includes a second lifting body connected to the second braking roller and moving along the second guide hole and having the second rack gear. delete
KR1020150170415A 2015-12-02 2015-12-02 Apparatus for braking strip KR101732979B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150170415A KR101732979B1 (en) 2015-12-02 2015-12-02 Apparatus for braking strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150170415A KR101732979B1 (en) 2015-12-02 2015-12-02 Apparatus for braking strip

Publications (1)

Publication Number Publication Date
KR101732979B1 true KR101732979B1 (en) 2017-05-08

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Family Applications (1)

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Country Status (1)

Country Link
KR (1) KR101732979B1 (en)

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