KR101603652B1 - Apparatus for correcting shape of strip - Google Patents

Abstract

The strips can be moved more smoothly at the time of shape calibration so that the shape correcting operation can be smoothly performed without damaging the strips. The strips are disposed at the upper and lower portions with the strips interposed therebetween. Wherein the upper calibrating roll presses the strip while moving freely up and down when passing through the luer portion of the strip.

Description

[0001] APPARATUS FOR CORRECTING SHAPE OF STRIP [0002]

The present invention relates to a shape principal apparatus for correcting the shape of a thin strip.

In general, a cold rolled strip is an extremely thin thin plate having a thickness of about 0.18 mm, and is subjected to annealing at a constant temperature to give uniformity and ductility of the structure generated during rolling.

Strip strip The strip stripped from the coil at the time of continuous annealing is rewound from the recoiler to the coil after passing through the annealing furnace continuously while moving along a long extended line.

The continuous thin strip strips along the line in the continuous annealing process are not formed flat due to the rotational speed difference between the rolls installed on the line, and a loop portion is formed in which a part is bent upward.

A calibrating device is provided on one side of the line where the strip proceeds to calibrate the loop formed in the strip. The conventional calibrating apparatus includes upper and lower rolls disposed on upper and lower sides of a strip and having a gap as much as the thickness of the strip. The strip passes through the upper roll and the lower roll to receive a pressure, .

However, the above-mentioned conventional structure causes a problem that the strips overlap each other while passing through the upper roll and the lower roll due to unreasonable pressure at the time of operation, resulting in a larger problem. In particular, in the case of thin strips of very thin thickness, there is a serious problem that the strips become more easily overlapped after the shape correction, causing damage or breakage, resulting in product disposal and worsening of productivity.

The present invention provides a strip shape calibrating device capable of more smoothly moving a strip during a shape correction, thereby smoothly performing a shape correction operation without damaging the strip.

The present invention also provides a strip shape correcting device which can prevent a shape correcting pressure from being applied to a strip excessively and can apply a pressure more naturally.

The present invention provides a strip shape calibrating device capable of more smoothly performing shape correction for thin strips of very thin thickness.

The calibrating device of this embodiment includes an upper calibrating roll and a lower calibrating roll which are arranged at the upper and lower sides of the strip, respectively, and are placed in the width direction of the strip to calibrate the looper portion of the strip, It may be a structure that presses the strip while freely moving up and down at the time of passing.

A movable member provided on the upper side of the strip to be movable up and down with respect to the fixed member and provided with the upper correcting roll on the lower end thereof; a movable member provided between the fixed member and the movable member, And an elastic portion for applying an elastic restoring force.

The upper calibrating roll may have a structure in which two lower calibrating rolls are disposed before and after the lower calibrating roll along the strip moving direction.

The shifting member may have a structure in which the upper center portion is axially coupled to the fixing member and can flow in the width direction of the strip.

And a shock absorber disposed between the fixed member and the movable member to absorb an impact applied to the movable member.

A shock absorber may be vertically installed at the upper center of the fixing member, a shaft member may be provided at the lower end of the shock absorber, and a flange may be formed at the upper center of the movable member to be axially coupled to the shaft member.

The elastic part includes a pair of moving rolls movably installed in the slot, an elastic spring connected between the pair of moving rolls to pull the two moving rolls toward the center of the moving member, And a pair of inclined slits which are inclinedly opposed to both sides of the fixing member at positions corresponding to the positions and into which the guide bars provided in the moving roll are inserted and guided.

Two elastic springs may be disposed on both sides of the moving member and installed at both ends of the moving roll, respectively.

As described above, according to the present embodiment, it is possible to minimize the application of unreasonable pressure to the lupu part of the thin strip, thereby preventing the strips from being overlapped and broken, and smoothly performing the shape correcting operation without damaging the strip.

Further, it is possible to prevent breakage or breakage of the strip, thereby increasing the yield of the product and reducing the unnecessary maintenance time, thereby maximizing the productivity.

1 is a perspective view showing a strip shape correcting apparatus according to the present embodiment.
2 is an exploded perspective view showing a configuration of a strip shape correcting apparatus according to the present embodiment.
3 is a schematic side cross-sectional view for explaining the operation of the strip shape correcting apparatus according to the present embodiment.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the following description, the present embodiment describes a shape correcting apparatus applied to a thin strip of thin plate as an example. The present apparatus is not limited to such a thin strip and is applicable to the shape correction of metal strips of various thicknesses.

FIG. 1 shows a strip shape correcting apparatus according to the present embodiment, and FIG. 2 shows an exploded perspective view of the shape correcting apparatus of this embodiment.

As shown in the drawings, the calibration apparatus 100 of the present embodiment is disposed at the upper and lower sides of the strip P, respectively, and is placed in the width direction of the strip P, R) and a lower calibrating roll 20. The upper calibrating roll 10 and the lower calibrating roll 20 are used to calibrate the calibrating rolls.

The lower calibrating roll 20 is disposed rotatably in the width direction of the strip P at the bottom of the apparatus. The lower calibrating roll 20 supports the lower portion of the strip P and pairs with the upper calibrating roll 10 to calibrate the strip P. [

The upper calibrating roll 10 is structured such that it presses the strip P while freely moving up and down when passing through the loop portion R of the strip P. [ The upper calibrating roll 10 moves upward naturally in accordance with the shape of the rupturable portion R while pressurizing and calibrating the rupturable portion R of the strip P to prevent the strip P of the thin plate from overlapping .

In order to drive the upper calibrating roll 10, the calibrating device 100 of this embodiment includes a fixing member 30 positioned on the upper side of the strip P, A movable member 40 provided with the upper calibrating roll 10 at the lower end thereof and an elastic portion provided between the fixing member 30 and the movable member 40 to exert an elastic return force when the movable member 40 ascends.

The fixing member 30 is a plate-like structure and is arranged in the width direction of the strip P above the strip P. The fixing member 30 is a fixed structure, for example, fixed to a frame structure constituting the apparatus.

The moving member 40 is a plate-like structure and is disposed on the front or rear surface of the fixing member 30 with the width direction of the strip P disposed. An upper calibrating roll (10) is rotatably installed at the lower end of the moving member (40).

In this embodiment, the upper calibrating roll 10 may be provided with two rolls. The lower end of the movable member 40 is divided into two parts, and the upper calibrating roll 10 is rotatably installed at each end.

As shown in Fig. 3, the two upper calibrating rolls 10 are arranged before and after the lower calibrating roll 20 in a strip P moving direction. One lower calibrating roll 20 located below the strip P and two upper calibrating rolls 10 disposed above the strip P are inverted triangularly formed to form a strip P passing therebetween. And correct the looper portion (R). Thus, the curved looper portion R of the strip P is passed through the two upper calibrating rolls 10 in turn, under the pressure of being distributed by the two upper calibrating rolls 10. This makes it possible to minimize the occurrence of overlapping of the strips P due to insufficient force applied to the looper portions R of the strips P at a time and repeatedly applying pressure to the strips P, The correction force can be increased.

The elastic portion applies a resilient return force for returning the movable member 40 to the home position together with the pressing force along with the movement of the movable member 40.

The elastic part includes elongated holes 42 formed at both sides of the moving member 40 and a pair of moving rolls 44 movably installed in the elongated holes 42. The pair of moving rolls 44, An elastic spring 46 which is connected to the movable member 40 and pulls the two moving rolls 44 toward the center of the movable member 40 and an elastic spring 46 which is formed opposite to both sides of the fixing member 30 at positions corresponding to the positions of the long holes 42, And a pair of inclined slits 48 formed so as to be upwardly inclined so that the distance between the inclined slits 48 increases toward each other.

The moving roll (44) is movably installed in the slot (42). A guide bar (50) extends along the axial direction of the moving roll (44) at the tip of the moving roll (44). The guide bar 50 may be formed by extending the moving roll 44 from the moving roll to a long extending component. The guide bar 50 is formed to have a sufficient length to be fitted into the inclined slit 48 formed in the fixing member 30. A guide bar 50 extending from the moving roll 44 is fitted to the inclined slit 48 of the fixing member 30 while the moving bar 44 is fitted into the slot 42 of the movable member 40.

Two elastic springs (46) are disposed on both sides of the moving member (40) and are provided at both ends of the moving roll (44). The elastic spring 46 is a coil spring 46 which is a tension coil spring 46 that generates an elastic force when the two moving rolls 44 are opened. Thus, when the two moving rolls 44 extend along the slot 42 and are separated from each other, the elastic spring 46 applies an elastic return force to the moving roll 44 to return the moving roll 44 to the original position.

In this embodiment, the elongated hole 42 is elongated in the horizontal direction to the moving member 40. The inclined slit (48) is formed on the fixing member (30) so as to be inclined up and down. Thus, the elongated hole 42 overlaps the inclined slit 48 to form a communicating portion. The communicating portion between the elongated hole 42 and the inclined slit 48 is a portion where the guide bar 50 extending from the moving roll 44 is fitted and the moving member 40 moves upward with respect to the fixing member 30 And is gradually moved along the inclined slit 48 toward the end of the strip P in the width direction. When the movable member 40 is lifted up relative to the fixing member 30, the movable roll 44 is also moved upward, and the guide bar 50 formed on the movable roll 44 is guided by the inclined slit 48 .

Therefore, the guide bars 50 of the respective moving rolls 44 are moved upward along the inclined slits 48 and away from each other. The moving rolls 44 connected to the guide bars 50 also move away from each other along the elongated holes 42 of the moving member 40 so that the gap between the two moving rolls 44 spreads.

Thus, when the movable member 40 is moved upward, the two movable rollers 44 are moved along the elongated hole 42 to be opened, and the elastic spring 46 connected between the movable rollers 44 is pulled in the width direction, (44).

The elastic force of the elastic spring 46 causes the moving roll 44 to move toward the center along the elongated hole 42 and to receive a force to reduce the distance therebetween. When the movable roll 44 moves toward the center of the movable member 40 along the elongated hole 42, the guide bar 50 formed on the movable roll 44 goes down along the inclined slit 48, The movable member 40 to which the movable member 44 is coupled is also moved downward with respect to the fixed member 30. [

That is, when the movable member 40 is lifted, the two moving rolls 44 are pulled out to both sides to pull the elastic spring 46 to generate an elastic force. By the elastic force of the elastic spring 46, The movable member 40 that has been raised while being moved toward the lower side is also subjected to a downward force to descend again.

The upper calibrating roll 10 provided at the lower end of the shifting member 40 is moved up and down in a flexible and resilient manner along the luer portion R of the strip P to keep the luer portion R in a close contact state It is possible to correct the looper portion R by continuing the correct amount of correction.

Between the fixing member 30 and the moving member 40, a shock absorber 60 for absorbing the impact applied to the moving member 40 is further provided. The shock absorber 60 absorbs and buffers an abnormal shock generated when the shifting member 40 is lifted according to the stripper (P) looper portion (R).

For example, the shock absorber 60 may have a cylinder structure having a piston rod 62, and a spring or fluid for buffering may be provided in the cylinder. 2, the shock absorber 60 may be vertically disposed toward the strip P and installed on the fixing member 30, and the moving rod 40 may be installed on the piston rod 62. As shown in FIG. Thus, the impact energy applied to the moving member 40 is transferred to the inside of the shock absorber 60 through the piston rod 62 and absorbed.

In the present embodiment, the movable member 40 has a structure capable of flowing in the width direction of the strip P with respect to the fixing member 30. [ To this end, the moving member 40 is axially coupled to the tip end of the piston rod 62 of the shock absorber 60 provided on the fixing member 30. [ A shaft member 64 is provided at the lower end of the shock absorber 60 and a flange 66 fitted to the shaft member 64 is formed at the upper center of the movable member 40 do. The movable member 40 is axially coupled to the fixing member 30 by tightening the bolts 68 and nuts through the through holes formed in the shaft member 64 and the flange 66 to be axially coupled.

Accordingly, the moving member 40 is freely rotatable in the width direction of the strip P about the shaft member 64. Accordingly, it is possible to apply the uniform pressure to the entire rupturable portion R corresponding to the shape of the rupturable portion R formed on the strip P more quickly and flexibly. For example, even when the shape of the stripper (P) looper portion (R) is not horizontal with respect to the strip P width direction and there is a height difference or unevenness, the moving member (40) The upper calibrating roll 10 can be aligned with the shape of the rupturable portion R and the pressure can be uniformly applied to the entire rupturable portion R while freely rotating in the strip P width direction.

Therefore, even a part of the stripper (P) looper portion (R) can be excessively pressurized to prevent the strip (P) from overlapping.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10: upper calibration roll 20: lower calibration roll
30: fixing member 40: moving member
42: Slot 44: Moving roll
46: elastic spring 48: oblique slit
50: guide bar 60: shock absorber
62: piston rod 64: shaft member
66: Flange 68: Bolt

Claims (8)

And an upper calibrating roll and a lower calibrating roll which are disposed at upper and lower portions of the strip, respectively, and which are placed in the width direction of the strip to calibrate the looper portion of the strip, wherein the upper calibrating roll is free to move up and down While pressing the strip,
A movable member provided above the strip, a movable member provided to move up and down with respect to the fixed member and provided with the upper correcting roll at its lower end, a movable member provided between the fixed member and the movable member, Wherein the elastic portion includes a slot formed in the moving member, a pair of moving rolls movably installed in the slot, and a pair of moving rolls connected between the pair of moving rolls to move the two moving rolls toward the center of the moving member And a pair of inclined slits which are inclined to be opposed to both sides of the fixing member at positions corresponding to the elongated hole forming positions and into which guide bars provided in the moving roll are inserted and guided. delete The method according to claim 1,
Wherein the upper calibrating roll is provided with two rollers arranged in the front and rear with a lower calibrating roll interposed therebetween along the strip moving direction. delete The method according to claim 1 or 3,
Two elastic springs are disposed on both sides of the moving member and are provided at both ends of the moving roll, respectively. The method according to claim 1 or 3,
Wherein the movable member is configured such that an upper-most center portion thereof is axially coupled to the fixing member and is capable of flowing in a width direction of the strip. The method according to claim 6,
And a shock absorber provided between the fixed member and the movable member for absorbing an impact applied to the movable member. 8. The method of claim 7,
Wherein a buffer is vertically installed at an upper center of the fixing member, a shaft member is provided at a lower end of the buffer, a flange protrudes from an upper center of the moving member, Device.

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