JP6035847B2 - Metal strip winding equipment - Google Patents

Description

  The present invention relates to a metal strip winding device, in particular, a metal strip winding that can suppress the meandering of the metal strip due to the pinch roll without causing wrinkles on the surface of the metal strip and realize an excellent winding shape. It relates to equipment.

1 and 2 show a conventional general steel strip winding facility, in which FIG. 1 is a plan view and FIG. 2 is a side view. This equipment includes a transport roll 47 for transporting the steel strip, a side guide 41 for guiding the steel strip to the pass line center (centering), guiding the steel strip pass line obliquely downward, and winding tension ( A pinch roll 42 for imparting (frictional force), a coiler 43 for winding a steel strip, and the like.
The coiler 43 winds the steel strip in a coil shape by a frictional force generated by a mandrel 430 that is a winding shaft and a wrapper roll 431 that presses the steel strip. The conveyance roll 47 (conveyance roll device) is called a hot run table or a run-out table in a hot rolling facility, and the most downstream conveyance roll group is shown in the figure. The side guide 41 is provided with a clearance of several millimeters to several tens of millimeters with respect to the width of the steel strip in consideration of position control error with respect to the plate width target, plate width error in rolling, wear damage due to collision, and the like. .

The pinch roll 42 applies a rolling load to the upper roll 420a via a bearing box (chock) by independent rolling devices on both ends of the roll, and sandwiches a steel strip between the lower roll 420b. In order to guide the steel strip between the upper and lower rolls of the pinch roll 42, an entry guide 44, an apron guide 45, etc. are installed on the entry side of the pinch roll 42, and a throat guide 46, etc. is installed on the exit side. ing.
In the case of a hot-rolled steel strip, since the winding tension is applied to the coiler 43 by a rolling mill during finish rolling, the holding strength of the steel strip by the pinch roll 42 is generally set low. Then, the tension distribution gradually shifts to the pinch roll 42 slightly before the tail end of the steel strip exits the finishing mill, and after the tail end of the steel strip exits the finishing mill, the winding tension ( Frictional force).

Here, the pinch roll 42 sandwiches the steel strip between the upper and lower rolls 420a and 420b, rotates the upper and lower rolls at a peripheral speed that is several percent to several tens of percent slower than the plate passing speed of the steel strip, and rolls against the steel strip. The winding tension (frictional force) applied to the coiler 43 is applied by feeding out while sliding. Therefore, if the friction force by the pinch roll 42 is weak, the winding becomes loose. If the friction force is strong, the direction of the tension is deviated, and meandering due to the pinch roll is likely to occur, and the optimal reduction load of the pinch roll 42 is obtained. And control of the rotation speed is necessary. In particular, at the tail end of a steel strip, there are cases where the meandering change becomes abrupt because of large fluctuations in tension, speed, plate thickness, etc., and the control response cannot respond.
FIG. 3 is a schematic diagram showing a situation in which meandering occurs due to pinch rolls when winding the tail end of the steel strip. When the steel strip meanders with the pinch roll 42 as shown in FIG. There was a problem that winding deviation occurred at 43.

There are two main causes of meandering due to pinch rolls: a side-slip force, which is a component of the frictional force in the plate width direction, and a moment due to displacement (differential load) of the rolling load at both ends of the pinch roll shaft.
Of the meandering caused by these pinch rolls, the side slip force will be described below. If the incident angle of the steel strip with respect to the axis of the pinch roll 42 is truly right, no meandering due to the pinch roll occurs. However, since there is a clearance between the side guide 41 and the steel strip, the steel strip can have a minute incident angle error with respect to the axis perpendicular to the pinch roll 42. Even if the steel strip is parallel to the center of the pass line, the axis of the pinch roll 42 may have a minute angular error with respect to the direction perpendicular to the line center. As long as it is a machine, minute angular errors are inevitable. Then, due to the slight deviation of the incident angle between the steel strip and the pinch roll 42, a side slip force due to the component force in the plate width direction is generated out of the frictional force as the winding tension, and the pinch roll 42 causes the meandering. Occur. The meandering amount generated in the pinch roll 42 reaches the coiler 43 by the steel strip passing plate and becomes an equivalent amount of winding deviation.

Here, in order to reduce the incident angle error of the steel strip with respect to the axis of the pinch roll 42, it is considered effective to bring the side guide 41 close to the vicinity of the pinch roll 42.
However, the side guide 41 has its end portion close to the vicinity of the pinch roll 42 in order to avoid interference with the entry guide 44 or the like, or because the transport roll 50 cannot be disposed on the entry side of the pinch roll 42. I can't. Also, it is desirable to arrange the transport roll 47 as far as the vicinity of the entrance side of the pinch roll 42, but the most downstream transport roll 47 cannot be disposed in the vicinity of the pinch roll 42 due to apparatus interference and the like.

The incidence angle error of the steel strip with respect to the axis of the pinch roll 42 is caused not only by the distance between the side guide 41 and the pinch roll 42 but also by the clearance between the side guide 41 and the steel strip. Obviously, it is effective to restrain the steel strip with the side guide 41 in order to prevent meandering due to the pinch roll.
If the edge portion of the steel strip is firmly constrained by the side guide 41, the steel strip is rubbed. Therefore, in order to constrain the edge of the steel strip by the side guide 41 without causing such crease, the plate width Accurate position control according to the need is required. However, at the tail end of the steel strip, since there is a wide portion (called flare or the like) generated in the rolling stage, accurate sheet width tracking control is difficult.
In addition, when performing so-called pressure control in which the side guide 41 is pressed against the edge of the steel strip, the pressing pressure constant control with higher accuracy is required as the steel strip becomes thinner. However, in such a constant pressing pressure control, the resultant force applied to one guide plate is fed back over the entire length of the side guide. Therefore, when the plate width is not uniform in the longitudinal direction of the steel strip, the partial pressing pressure is excessive. Or it is inevitable that the pressing pressure is too low.
Furthermore, when the side guide 41 is pressed against the edge of the steel strip, there is a problem that the edge of the steel strip is damaged (so-called ears are damaged). Since it is a steel strip edge part, it becomes wedge-shaped local wear, and what was initially restrained by the flat surface of the side guide 41 sometimes brazed the steel strip due to such local wear.

In order to correct the meandering generated in the pinch roll 42, a method of installing a meandering correction roller or the like between the pinch roll 42 and the coiler 43 has been studied.
However, when the winding diameter of the steel strip by the coiler 43 becomes thick, the pass line of the steel strip changes, so it is difficult to install a support roller or the like, and the method of meandering control by applying a roller to an unsupported steel strip is There was a limit from the viewpoint of control response. In addition, a method of feeding back a sensor signal such as a meandering meter and controlling the steel strip in the width direction has a problem that it is difficult to realize due to a problem of responsiveness.

  Moreover, in patent documents 1-3, the pinch roll system which installed the pinch roll (# 0 pinch roll) which shares winding tension in the further upstream of the pinch roll (# 1 pinch roll) of a coiler entrance side was installed. The facilities are shown. According to such facilities of Patent Documents 1 to 3, the steel strip between the # 1 pinch roll and the # 0 pinch roll has a back tension due to the # 0 pinch roll. Can prevent meandering.

  Furthermore, Patent Document 4 discloses a facility in which the side guide width is widened downward, both edge portions of the steel strip are restrained downward, and the side guide width can be hydraulically controlled. Yes. In this equipment, the side guide width (preset value) is set to be 10 to 15 mm wider than the plate width and then switched to constant hydraulic control. The set value of the side guide width extends from the tip of the steel strip to the tail end. Finely divided at each timing. And before the steel strip tail end passes through the finishing mill and becomes no tension, it is possible to perform constant pressing pressure control in which the side guides restrain the steel strip at a constant pressing pressure.

  However, when the # 0 pinch roll is installed as a double pinch roll as in Patent Documents 1 to 3, if the # 0 pinch roll itself has an axis deviation or a differential load, the # 0 pinch roll generates a meandering factor. There was a problem of letting it go. On the entry side of the # 0 pinch roll, the tail end of the steel strip becomes tensionless as in the general single pinch roll method, and therefore meandering due to the # 0 pinch roll cannot be prevented. In addition, after the tail end of the steel strip has passed through the # 0 pinch roll, a meandering factor similar to that in the single pinch roll method occurs. Furthermore, the addition of # 0 pinch rolls also had problems in terms of equipment cost and installation space.

  Furthermore, in the technique of Patent Document 4, since the edge portion of the steel strip is constrained, there is an essential problem such as damaging the edge portion of the steel strip as described above. Moreover, in patent document 4, although it is supposed that both edge parts of a steel strip will be restrained below by making a side guide width | variety downward downward, if a steel strip is pushed too much by causes, such as a response delay of hydraulic control. Since the edge of the steel strip is bent downward between the transport rolls, there are problems of deformation and wrinkles.

  Therefore, in order to solve the above-mentioned problem, as shown in FIG. 4, Patent Document 5 discloses a metal strip provided with a side guide 41, a pinch roll 42 and a coiler (not shown) in this order from the upstream side of the line. A non-drive-type pressing roll X, which is a winding equipment and is restrained by sandwiching the metal band S with the transport roll 47 of the metal band S as a means for preventing the metal band from being out-of-plane at a predetermined position in the line. A metal strip winding facility characterized by being provided is disclosed. If this technique is adopted, the meandering of the metal band due to the pinch roll can be appropriately suppressed with a relatively simple equipment configuration.

JP 58-77717 A JP-A-5-69040 JP-A-7-136715 JP 2002-282937 A JP 2010-240704 A

  However, in the technique of Patent Document 5, although the meandering of the metal band caused by the pinch roll can be suppressed, wrinkles generated by friction with the pressing roll are generated on the surface of the wound metal band. Further improvements were desired.

  The present invention has been proposed in order to solve the above-mentioned problems, and can suppress the meandering of the metal band caused by the pinch roll without causing wrinkles on the surface of the metal band and realize an excellent winding shape. The object is to provide a metal strip winding facility.

As a result of intensive investigations to achieve the above-described object, the inventors of the conventional art have taken into consideration the conventional technology of the winding roll of the metal strip, which is sequentially provided with a side guide, a pinch roll, and a coiler, from the upstream side of the line. The friction between the pressing roll and the metal strip can be reduced by rotating along the transport direction with the metal strip sandwiched between the transport roll and constrained, so that the friction between the press roll and the metal strip can be reduced. The present inventors have found that the generation of wrinkles on the surface of the metal band can be prevented while suppressing the meandering of the metal band.
Further, the side guide is constituted by a side guide main body and a side guide front end that is provided on the downstream side of the line of the side guide main body and can be opened and closed in the width direction of the metal strip to be conveyed. It has also been found that an excellent winding shape can be realized as a result of being able to guide the metal band to be conveyed well because it can be close to the pinch roll.

That is, the gist configuration of the present invention is as follows.
(1) In a metal strip winding facility sequentially including a side guide, a pinch roll, and a coiler from the upstream side of the line, the side guide is provided on the side guide main body and the line downstream side of the side guide main body and is conveyed. A side guide tip that can be opened and closed in the width direction of the metal strip, further comprising a press roll positioned above the tip end of the side guide, the roll length of the press roll is larger than the width of the metal strip, When transporting the metal strip, the guide roll lowers after the leading end of the guide opens outward in the width direction of the metal strip before the tail end of the metal strip passes through the final stand of the finishing mill. A winding mechanism for a metal band, wherein the pressing roll is rotationally driven along a transport direction in a state where the metal band is sandwiched and restrained between the transport rolls.

( 2 ) The metal strip winding facility according to (1) , wherein the pressing force of the pressing roll is 1 ton or less.

( 3 ) The metal strip winding facility according to (1) or (2) , wherein the pressing roll is a surface sprayed roll.

( 4 ) The metal strip winding facility according to any one of (1) to ( 3 ), further comprising a tail end detecting means for detecting a tail end position of the metal strip.

  According to the present invention, it is possible to provide a metal band winding facility that can suppress the meandering of the metal band caused by the pinch roll without causing wrinkles on the surface of the metal band and realize an excellent winding shape. It becomes.

It is the top view which showed the conventional general steel strip winding equipment. It is the side view which showed the conventional general steel strip winding equipment. It is a figure which shows typically the state where the meandering of the steel strip generate | occur | produced due to the pinch roll when winding a steel strip with the conventional general steel strip winding equipment. It is the side view which showed one Embodiment of the winding equipment of the metal strip of the cited reference 5. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which showed typically one Embodiment of the winding apparatus of the metal strip by this invention, Comprising: (a) is a state before a suppression roll descend | falls, (b) is a state where the suppression roll descend | falls. . It is the top view which showed typically one Embodiment of the winding apparatus of the metal strip by this invention, Comprising: (a) is the state before a suppression roll descend | falls, (b) is the state which the suppression roll descend | falls. . It is a block diagram which shows the raising / lowering mechanism used for a side guide apparatus. It is a block diagram which shows the tilt mechanism used for a side guide apparatus. It is a block diagram which shows the tilt mechanism used for a side guide apparatus. It is a front view which shows one Embodiment of the support pressure reduction means of the pressing roll in the winding equipment of this invention.

Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 5 is a cross-sectional view schematically showing an embodiment of a metal strip winding device according to the present invention, where (a) is a state before the restraining roll is lowered, and (b) is a descending state of the restraining roll. It is in the state. FIG. 6 is a plan view schematically showing an embodiment of a metal strip winding device according to the present invention, where (a) is a state before the restraining roll is lowered, and (b) is a descending state of the restraining roll. It is in the state. For convenience of explanation, description of a part of the pinch roll and the metal strip is omitted.

  As shown in FIG. 5, the metal strip winding device according to the present invention includes a side guide 101, pinch rolls 12 a and 12 b, and a coiler (not shown) sequentially from the upstream side of the line.

The metal strip S is transported along the plate transport direction α by a plurality of table rolls 1.
Specifically, the steel plates fed from a finishing mill (not shown) arranged on the upstream side in the plate conveyance direction α are conveyed on the plurality of table rolls 1 and via the pinch roll device 10, It is guided and wound up by a coiler (not shown).

  The side guide device 100 is arranged on the table roll 1. The side guide device 100 performs centering while guiding both sides of the steel plate to be conveyed, and the configuration and operation thereof will be described later.

The pinch roll device 10 is disposed on the entrance side of the coiler. The pinch roll device 10 includes an upper pinch roll 12 a and a lower pinch roll 12 b in a pinch roll housing 11. The length of the pinch rolls 12a and 12b in the plate width direction H is substantially equal to the length of the table roll 1 in the plate width direction H.
The upper pinch roll 12a and the lower pinch roll 12b hold the metal band S conveyed along the plate conveying direction α while being rotated and guide it to the coiler.

(Presser roll)
As shown in FIG. 5, the metal strip winding facility of the present invention includes a pressing roll 14 positioned above the side guide tip 101 b.
Then, when the pressing roll 14 is transporting the metal band S (FIG. 5A), the guide tip portion 101b is lowered toward the outer side in the width direction of the metal band S, and the metal band S is lowered. Is rotated along the transport direction in a state of being sandwiched and restrained between the transport rolls (FIG. 5B).
By adopting the above configuration, the friction between the pressing roll 14 and the metal band S can be reduced by rotating along the transport direction α in a state where the metal band S is sandwiched and restrained between the transport roll 1. Therefore, the generation of wrinkles on the surface of the metal band can be prevented while suppressing the meandering of the metal band S caused by the pinch rolls 12a and 12b.

The pressing roll 14 rotates along the conveying direction of the metal strip S. The reason for rotating along the transport direction is to reduce friction with the transported metal strip S as much as possible. The rotational speed of the pressing roll 14 can be arbitrarily set, but is preferably about the same as the rotational speed of the transport roll 1 from the viewpoint of suppressing surface flaws of the metal band S.
The method for rotating the pressing roll 14 is not particularly limited. For example, it can be rotated by a motor or the like that can appropriately control the rotation speed.

  The reason why the pressing roll 14 descends after the guide tip 101b opens toward the outer side in the width direction of the metal strip S is as shown in FIG. This is preferably larger than the width W1 of the transport path of the metal strip S formed by the side guide 101, because the metal strip S can only be contacted after the side guide tip 101b is opened. Therefore, in the present invention, as shown in FIG. 5, the pressing roll 14 is positioned above the side guide tip 101 b during the transport of the metal band S (FIG. 5A), and the metal band S When the tail end approaches, the side guide tip 101b opens and the pressing roll descends to press the metal strip (FIG. 5 (b)).

Here, the roll length L1 of the pressing roll is larger than the width W1 of the metal strip . This is because generation of wrinkles on the surface of the metal band can be more effectively suppressed by uniformly pressing the entire width direction of the metal band S by the pressing roll 14. When the roll length L1 of the pressing roll is smaller than the width W1 of the metal strip S, the end 14a of the pressing roll 14 may repeatedly contact the surface of the metal strip S irregularly, resulting in surface flaws. There is.

  In addition, the press roll 14 may cause a new meandering factor due to a displacement (difference load) in the rolling load in the metal band width direction due to the roll, and therefore the displacement in the rolling load in the metal band width direction may be increased. It is preferable to take care not to occur. In this sense, it is preferable that the pressing roll X is supported by a single supporting pressure reducing means, or is not supported by the supporting pressure reducing means, and is in contact with the metal strip by its own weight.

  Furthermore, the pressing force of the pressing roll 14 is preferably 1 ton or less. This is because if the pressing force by the pressing roll exceeds 1 ton, the force sandwiching the metal band S becomes excessively large, so that wrinkles may occur on the surface of the metal band. The lower limit value of the pressing force is not particularly limited, but is preferably 0.2 tons or more from the viewpoint of suppressing the meandering of the metal strip S caused by the pinch roll.

  The roll shape of the pressing roll 14 may be a crown roll in addition to a normal flat roll. In particular, in the case of a convex crown roll (a crown roll having a large diameter at the central portion), the reduction by the central portion of the roll is the main component, so that a differential load is hardly generated. The metal strip to be rolled up by the present invention is typically a steel strip such as a hot-rolled steel strip, but is not limited to this and can be any metal strip. In addition, when the metal strip S is a steel strip, a steel strip having a thickness of 3 mm or less, particularly a thin steel strip having a thickness of 2 mm or less, called a thin object, is likely to cause meandering of the tail end portion. It is particularly useful as a winding equipment and a winding method for a steel strip having a small thickness.

  The pressing roll 14 is preferably a surface sprayed roll. This is because the friction with the metal strip S is small and the generation of surface flaws can be further suppressed.

  The pressing roll 14 needs to have a mechanism capable of moving up and down. There is no particular limitation on the specific configuration of the up-and-down lifting mechanism. For example, the support pressure reducing means 10 as shown in FIGS. 10A to 10C may be expanded or contracted, or the support pressure reducing means 20 itself may be raised or lowered, or although not shown, the path Elevating guides are provided on both sides of the line, and a method of holding the roll shafts at both ends of the pressing roll 14 or roll bearings supporting the roll shafts on the lifting guides so as to be slidable in the vertical direction, and rotating the pressing roll 14 in the vertical direction. A system in which a free supporting arm is rotatably supported may be used.

FIGS. 10A to 10C show an embodiment in which the pressing roll 14 is instructed by the indicated pressure reducing means (elevating device). FIG. 10A is a front view, and FIG. b) is a bottom view, and FIG. 10C is a side view.
The support pressure reduction means 20 has roll bearing portions 22 at both ends, and a roll support body 21 that rotatably supports both ends (roll shaft 15) of the pressing roll 14 by the both roll bearing portions 22, and a lower end portion thereof. The roll support 21 is composed of a support reduction arm 23 pivotally attached to the center in the longitudinal direction of the roll support 21. The roll support 21 can swing in the vertical direction in the metal band width direction with the support attachment arm 23 as a fulcrum. Is held on. In order to pivotally support the support reduction arm 23 in the center of the roll support 21 in the longitudinal direction, support shafts 24 are provided on both sides of the center of the roll support 21 in the longitudinal direction. A bracket 25 at the lower end is pivotally supported rotatably. The support reduction arm includes a reduction mechanism such as a cylinder device.

In this embodiment, in order to allow the pressing roll 14 to roll down the metal band width direction as evenly as possible, in the vertical direction, the roll axis of the pressing roll 14 and the pivoting position (supporting shaft 24) of the support pressure lowering arm 23 are arranged. The centers are made to coincide with each other so that the reduction load by the support reduction arm 23 does not cause a component force other than the reduction direction.
As described above, the pressing roll 14 is supported symmetrically by the single support reduction means 20, more specifically, the support including the roll support 11 and the support reduction arm 23 that holds the roll support 11. By supporting with the rolling-down means 20, the metal strip S can be uniformly rolled down in the width direction, so that it is possible to prevent a moment from being generated due to a shift (differential load) of the rolling load in the metal band width direction. In addition, as described above, the roll support 21 can swing in the vertical direction with the support shaft 24 (the pivoting portion) as a fulcrum, and the pressing roll 14 can freely tilt in the vertical direction. The differential load in the width direction is particularly difficult to occur.

  Further, as to the timing at which the pressing roll 14 contacts the metal band S, as shown in FIG. 6B, when the tail end SL of the metal band S approaches, specifically, the metal band S It is preferable that the tail end of the steel sheet passes after the first stand of the finishing mill and before the final stand. This is because the metal belt meandering suppression effect by the pressing roll 14 is effective when the tail end SL of the metal band S approaches. When the press roll 14 is brought into contact with the metal band S before the tail end SL of the metal band S passes through the first stand of the finishing mill, the contact time becomes too long, so that the surface of the metal band is wrinkled. This is because it may occur.

  Furthermore, it is preferable that the winding equipment of the present invention further includes tail end detection means (not shown) for detecting the tail end position of the metal strip. This is because, by accurately grasping the tail end position of the metal strip S by the tail end detecting means, the pressing roll 14 can be lowered at an appropriate timing. Here, the tail end detection means is not particularly limited as long as it can appropriately grasp the tail end of the metal band S. For example, a reduction signal of a finishing mill, an output signal of a finishing thickness meter, and the like can be given.

(Side guide)
And, as shown in FIGS. 6 (a) and 6 (b), in the metal strip winding device of the present invention, the side guide 101 is provided on the side guide main body 101a and the line guide downstream side of the side guide main body, It consists of the side guide front-end | tip part 101b which can be opened and closed in the width direction of the metal strip S conveyed.
By adopting a structure that can be opened and closed, the side guide tip 101b can be brought close to the pinch rolls 12a and 12b. As a result, the metal band S to be conveyed can be guided well and an excellent winding shape can be realized.

  The pair of side guides 101 are arranged so as to be symmetric with respect to the conveyance line center line C indicated by a one-dot chain line in FIG. The side guide 101 can move along the width direction H of the metal band S, and the distance between the side guides 101 is adjusted according to the width of the metal band S. As a result, both sides of the steel plate to be conveyed are conveyed while being centered while being guided by the side guide 101.

  As described above, the pair of side guides 101 can move along the plate width direction H of the metal band S. When the metal band S is transported, according to the width of the metal band S being transported, It is possible to adjust the distance between the side guides 101 between the minimum opening W1 and the maximum opening W2. Further, at the time of maintenance, the distance between both side guides 101 is opened to the maintenance opening W3, that is, the side guide 101 is moved to a position outside the both ends of the table roll 1 with respect to the width direction H of the metal strip S. It can also be made.

Here, the detailed structure of the side guide 101 will be described.
In this side guide 101, as shown in FIGS. 6 (a) and 6 (b), the side guide main body 101a is disposed on the tip side (downstream with respect to the transport direction α of the metal strip S) via the rotation support portion 102. A guide tip 101b is rotatably attached.

  An actuator support portion 103 is fixed to the side guide body 101a. An actuator 104 that is an expansion / contraction mechanism such as a hydraulic cylinder is rotatably attached to the actuator support portion 103 by a rotation support portion 105. Further, the distal end portion of the actuator 104 is rotatably attached to the side guide distal end portion 101 b by a rotation support portion 106.

The rotation support portion 102 is moved up and down to raise the side guide tip 101b so that the lower side of the side guide tip 101b does not interfere (collision) with the table roll 1 when the side guide tip 101b is rotated. A mechanism 110 is incorporated.
Regarding the movement of the elevating mechanism 110, refer to FIG. 7 (a) showing the state where the side guide tip 101b is lowered and FIG. 7 (b) showing the state where the side guide tip 101b is raised. explain.

  As shown in FIGS. 7A and 7B, the connecting pin 111 penetrates the side guide main body 101a and the side guide tip 101b in the vertical direction, and the side guide tip 101b is connected to the connecting pin 111. It can be moved up and down along. The raising / lowering cylinder 112 is arrange | positioned between the side guide main body 101a and the side guide front-end | tip part 101b.

When the elevating cylinder 112 extends, the side guide tip 101b moves upward with respect to the side guide main body 101a as shown in FIG. As a result, a gap is formed between the lower side of the side guide tip 101b and the table roll 1, and even if the side guide tip 101b rotates, the lower side of the side guide tip 101b interferes with the table roll 1. There is no.
On the other hand, when the elevating cylinder 112 contracts, as shown in FIG. 5, the side guide tip 101b moves downward, and the height of the lower side of the side guide tip 101b is the height of the lower side of the side guide main body 101a. Equal to the position.

  Further, regarding the opening and closing of the side guide tip 101b, there is a technique using a tilt mechanism in addition to the lifting mechanism 110. 8 (a) and 8 (b) showing the state where the side guide tip 101b is tilted down, and FIGS. 9 (a) and 9 (b) showing the state where the side guide tip 101b is tilted up. To do.

  As shown in FIGS. 8 (a) and 8 (b) and FIGS. 9 (a) and 9 (b), the side guide main body 101a and the rotating pin 122 have a connecting pin 121 penetrating in the vertical direction. The pin 122 can be rotated in a horizontal plane with the connecting pin 121 as a rotation center. The rotation pin 122 is inserted into the rotation connection part 123, and the rotation connection part 123 can rotate about the rotation pin 122 as a rotation center. Further, a side guide tip 101b is fixed to the rotation connecting portion 123. For this reason, the rotation connecting portion 123 and the side guide distal end portion 101b can be rotated (tilted) in the γ direction with the rotation pin 122 as the rotation center.

The fixed connection portion 124 is fixed to the rotation pin 122. The cylinder 125 is rotatably attached to the fixed connection portion 124 and the cylinder tip is rotatably connected to the rotation connection portion 123. Therefore, when the cylinder 125 is contracted, the side guide tip portion 101b is tilted down as shown in FIG. 8, and the height position of the lower side of the side guide tip portion 101b is equal to the height position of the side guide main body 101a.
On the other hand, when the cylinder 125 is extended, the side guide tip portion 101b is tilted up as shown in FIGS. It becomes higher than the position.
Therefore, even if the side guide tip 101 b rotates in the tilted up state, the lower side of the side guide tip 101 b does not interfere with the table roll 1.

  Here, the operation of the side guide 101 when the tip of a thin metal band is conveyed will be described with reference to FIG.

As shown in FIG. 6A, the actuator 104 is extended to bring both side guide tip portions 101b and 101b into a parallel state. As described above, the distance between the side guides 101 is adjusted according to the plate width of the steel sheet while keeping both the side guide front end portions 101b in the parallel state.
When both side guide front end portions 101b are in a parallel state, the side guide front end portion 101b enters the pinch roll housing 11, and the front end of the side guide front end portion 101b (the end portion on the pinch roll side) is the pinch roll 12a, b. Proximity to.
For this reason, the steel sheet is guided not only by the side guide main body 101a of the side guide 100 but also by the side guide tip 101b to the vicinity of the pinch rolls 12 and 13. For this reason, the centering of the front-end | tip of a thin steel plate can be performed more reliably, and the winding shape of a thin steel plate can be improved.

In addition, the operation state when transporting the tail end of the thin metal band is the initial state, as shown in FIG. 6A, when both side guide tip portions 101b are in a parallel state, The distance between the side guides 101 and 101 is set to the minimum opening W1 while the side guide tips 101b and 101b are kept in parallel. After that, as shown in FIG. 7B, the elevating cylinder 112 is extended to raise the side guide tip 101b.
When the actuator 104 is contracted while the side guide tip 101b is raised (floated) in this way, the side guide tip 101b rotates about the rotation support portion 102 as a center of rotation. The guide tip portions 101b and 101b open outward.
And finally, as shown in FIG. 6, the longitudinal direction of both side guide tip portions 101 b is along the plate width direction H. That is, the longitudinal direction of the side guide tip 101b is perpendicular to the longitudinal direction of the actuator body 101a.

When both side guide tip portions 101b open outward and the longitudinal direction of the side guide tip portion 101b becomes perpendicular to the longitudinal direction of the actuator body 101a, the operation of the actuator 104 is stopped.
And the space | interval of the side guide main body 101a of both the side guides 101 is adjusted according to the board width of a steel plate, and also as shown in FIG.5 (b), the press roll 14 and the pinch roll containing side guide 1 are made into a downward position. After moving, the tail end of a thin steel plate is conveyed.

  Next, as shown in FIG. 6 (b), both side guide tips 101b and 101b are opened in the parallel state as shown in FIG. The operation state when setting is described. As shown in FIG. 6 (b), both side guide tips 101b, 101b are open to the outside, and the side guide tips 101b are lifted (floated) while both sides The interval between the side guide bodies 101a and 101a of the guides 101 and 101 is defined as a minimum opening W1.

When the actuator 104 is extended, the side guide tip portion 101b rotates about the rotation support portion 102, and both side guide tip portions 101b close inward.
When the side guide tip 101b becomes parallel, the operation of the actuator 104 is stopped, and then the elevating cylinder 112 is contracted to lower the side guide tip 101b as shown in FIG.

  As another embodiment of the side guide front end portion 101b, the side guide main body 201a may be arranged so as to be movable along the plate transport direction α on the front end side (downstream side with respect to the plate transport direction α). In this case, a slide member (not shown) is provided in the side guide main body 101a to enable the side guide tip 101b to move.

  In addition, about the winding apparatus of the metal strip by this invention, about components other than the component (a side guide, a pinch roll, a coiler, a press roll, etc.) mentioned above, there is no limitation in particular, It is the same as a well-known facility. Can be used.

  Moreover, the said metal strip S means a strip-shaped metal, and a steel strip, a steel plate, a strip steel, a strip, a rolled plate, a rolled strip, a strip, etc. are mentioned.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

(Example of the present invention)
Winding of a steel strip (JIS SPHC, width: 0.9 m, thickness: 2.0 mm) using a metal strip winding facility 100 having a side guide 101 and a pressing roll 14 as shown in FIGS. Went.
The press roll 14 was a surface sprayed roll having a roll length L1 of 1.8 m and larger than the width W1 of the steel strip, the pressing force was 0.3 tons, and the roll was rotated at the same rotational speed as the transport roll. The lowering of the press roll 14 was triggered by the fact that the tail end of the steel strip passed through the first stand of the finishing mill.
The opening and closing of the side guide tip 101b of the side guide 101 was performed using an actuator 104 as shown in FIG.
The steel strip surface after winding was observed and evaluated.

(Comparative example)
The steel sheet was corrected under the same conditions as in the example of the present invention except that the pressing roll 14 did not rotate and the roll length L1 of the pressing roll 14 was 0.3 m and smaller than the width W1 of the steel strip.
The steel strip surface after winding was observed and evaluated.

  The surface of the steel strip wound up in the example of the present invention was compared with the surface of the steel strip wound up in the comparative example. As a result, it was found that the steel strip wound up in the example of the present invention had no wrinkles on the surface. On the other hand, the steel strip wound up in the comparative example showed a crack generated on the surface due to friction with the end of the pressing roll.

  ADVANTAGE OF THE INVENTION According to this invention, the metal band winding equipment which can suppress the meandering of the metal band resulting from a pinch roll, and can implement | achieve the outstanding winding shape, without producing a wrinkle on the surface of a metal band can be provided. As a result, it is possible to obtain a metal strip coil having no surface wrinkles and excellent winding shape.

DESCRIPTION OF SYMBOLS 10 Pinch roll apparatus 11 Pinch roll housing 12 Pinch roll 14 Holding roll 15 Roll shaft 20 Side guide main body 21 Roll support body 22 Roll bearing part 23 Support pressure reduction arm 24 Support shaft 25 Bracket 41 Side guide 42 Pinch roll 43 Coiler 44 Entry guide 45 Apron guide 46 Throat guide 47 Transport roll 100 Metal strip take-up equipment 101 Side guide 102 Rotation support portion 103 Actuator support portion 104 Actuator 105 Rotation support portion 106 Rotation support portion 121 Connection pin 122 Rotation pin 123 Rotation connection portion 124 Fixed Connecting part 125 Cylinder 420 Vertical roll 430 Mandrel

Claims (5)

From the upstream side of the line, in the winding facility for metal strips, which are sequentially equipped with side guides, pinch rolls and coilers,
The side guide is composed of a side guide main body and a side guide tip provided on the line downstream side of the side guide main body and openable and closable in the width direction of the metal strip to be conveyed.
Further comprising a press roll positioned above the tip of the side guide, the roll length of the press roll is larger than the width of the metal strip, and the tail end of the metal strip is the finish rolling mill when the metal strip is transported before passing through the final stand, the guide tip is presser roll is lowered after opening toward the outside in the width direction of the metal strip, said while sandwiched therebetween restrained between the transport roll and the metal strip A metal strip winding device, wherein a pressing roll is rotationally driven along a conveying direction.   The metal strip winding device according to claim 1, wherein the pressing force of the pressing roll is 1 ton or less.   The metal strip winding facility according to claim 1 or 2, wherein the pressing roll is a surface sprayed roll. The winding facility for a metal strip according to any one of claims 1 to 3 , further comprising a tail end detecting means for detecting a tail end position of the metal strip. From the upstream side of the line, a method of winding a metal strip having a thickness of 3 mm or less by a winding facility sequentially including a side guide, a pinch roll and a coiler,
The side guide is composed of a side guide main body and a side guide tip provided on the line downstream side of the side guide main body and openable and closable in the width direction of the metal strip to be conveyed.
Using a pressed roll positioned above the tip of the side guide and having a roll length larger than the width of the metal strip, when the metal strip is conveyed, the tail end of the metal strip passes through the final stand of the finishing mill. before, the guide tip lowers the presser roll after opening toward the outside in the width direction of the metal strip, sandwiched therebetween conveying direction presser roll while constrained between the transport roll and the metal strip A method of winding a metal strip, wherein the metal strip is driven to rotate along the axis.

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