JP2002273519A - Tension leveler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a favorable tension leveler with which the direction or the strength of a residual camber can be arbitrarily changed. SOLUTION: In the tension leveler provided with rolls 21, 22 above and beneath a sheet which is passed through, about at least a pair of rolls 21, 22 which are vertically paired, the serial order is made changeable. Especially, as a means for that, a roll unit 23 in which the roll 21 is provided in the offset position is made attachable in a housing after reversing its direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tension leveler, that is, an apparatus for correcting flatness of a plate such as a steel plate by applying tension and repeated bending to the plate.

[0002]

2. Description of the Related Art A tension leveler is an apparatus for correcting flatness of a rolled steel sheet, for example, for flattening the flatness of the sheet. The outline of the configuration is as shown in FIG. 1 and FIG.
An extension roll portion (extension leveler) 2 that repeatedly gives curvature to a plate (strip, that is, a strip-like plate) p under tension, and a shape that removes residual warpage generated by the extension roll portion 2. The tension leveler 1 is constituted by the correction roll section (correction leveler) 3. The bridging rolls 8 arranged in front and back as shown in FIG.
9 while applying tension to the plate p,
The flatness of the plate p can be improved by feeding the plate between upper and lower rolls (particularly, a work roll that comes into contact with the plate p; see FIG. 2). In the drawing, reference numeral 10 denotes a front part of the extension roll unit 2, and reference numeral 20 denotes a rear part. The general technology of the tension leveler is also described, for example, in Japanese Patent Publication No. 57-27772.

[0003]

The shape correcting roll in the tension leveler is disposed at the rear (downstream side) in order to remove the residual warpage generated in the elongating roll, but the warp is completely removed. It is generally difficult to do. That is, residual warpage occurs in a certain direction in the elongation roll part, and it is impossible to completely eliminate the residual warp unless a considerably large facility is used for the shape correction roll part.

[0004] If a certain level of warpage remains on the plate due to passing through the tension leveler, the plate may not be handled smoothly in the downstream process. For example, in the case of a tension reel for winding a plate (strip), the plate is wound up (winding from the upper part of the reel) or wound down (lower part of the reel) depending on the relationship with the plating surface or painted surface of the plate. Roll up from
However, if the direction of the residual warpage is always constant, the winding may not be smoothly started depending on the winding direction. This is because even if the leading end of the plate having the upward residual warpage is fed to the tension winding reel, the leading end may not smoothly and automatically enter the groove on the reel surface.

[0005] In such a case, if the direction of the residual warpage in the tension leveler can be changed or its strength can be adjusted in accordance with the circumstances in the downstream process, many of the inconveniences caused by the residual warpage can be largely corrected. This can be solved without using equipment. The invention described in the claims intends to provide a preferable tension leveler which can arbitrarily change the direction or strength of the residual warp in consideration of such circumstances.

[0006]

According to a first aspect of the present invention, there is provided a tension leveler comprising a stretching roll portion (also referred to as a stretching leveler) and a shape correcting roll portion (also referred to as a straightening leveler) which are disposed above and below (up and down) a plate to be passed. A plurality of rolls (hereinafter simply referred to as "rolls")
In this case, in a tension leveler provided with a work roll that comes into contact with a plate), at least a pair of rolls forming a pair up and down is front and rear (front means upstream and downstream means downstream). The order (arrangement order) can be changed.

[0007] The direction and strength of the residual warpage of the plate after passing through the tension leveler is determined by the arrangement of the rolls in the extension roll portion or the shape correction roll portion. Therefore, if the arrangement order of at least a pair of rolls can be changed as described above, it is possible to intentionally change the direction and strength of the residual warpage on the plate exiting the tension leveler.

For example, if the order of the rolls 11 and 12 and the rolls 21 and 22 in the elongating roll portion 2 of FIG.
The direction of the residual warpage generated in the elongation roll portion is naturally reversed. Even if not all of them are reversed, simply reversing the order of one pair of rolls in the extension roll changes the direction or strength of the residual warp, and also changes the residual warp of the plate that passed the shape correction roll. I do. The rolls 33a and 34a, 33b and 34b, 33c and 34c in FIG.
In the case where the arrangement order is changed for a pair of rolls forming a pair in the upper and lower directions, the removal ability for the residual warpage changes, and as a result, the direction and strength of the residual warpage finally change. Then, without introducing large-scale straightening equipment and without preparing another roll to be replaced, the residual warpage may be appropriately adjusted to facilitate the handling of the plate according to the circumstances in the downstream process. You can change the direction and strength of the game.

[0009] The tension leveler according to the second aspect is characterized in that the front and rear order of the last pair of rolls in the extension roll portion can be changed.

As described above, the direction and strength of the residual warp can be changed even if the order is changed for any pair of rolls forming a pair up and down. However, according to a study by the inventors, it is most effective to change the order of the last pair of rolls in the extended roll portion. That is, if the order of the final pair of rolls is changed, the strength of the residual warp can be remarkably adjusted, and the direction thereof can be changed accurately. Therefore, the residual warpage of the plate can be set effectively in accordance with the handling of the plate in the downstream process.

[0011] The tension leveler according to claim 3 is:
In particular, for one of the upper and lower rolls of a pair of rolls in which the order of front and rear can be changed, a) Take out the roll unit in which the roll, bearing, and bearing box are integrated into the housing (tension leveler frame). B) The position of the roll in the roll unit is offset (shifted) from the center line (the center position on the roll unit mounting) extending in the plate width direction (the direction of the strip width) to the front or rear. C) The roll unit can be mounted in its original position in the housing by reversing the direction of the plate width direction (therefore, the front and rear directions are also reversed). .

With such a tension leveler,
The order of the rolls can be easily changed. A) to above
Take out the roll unit of the roll as in c) from the housing, reverse the direction of the plate width direction and attach it to the original position in the housing.The position of the roll will be at b) from the center line of the roll unit. This is because they are offset as described above and move back and forth, and form a pair with the opponent's roll in an order different from the original order. That is,
By changing the direction and using the same roll unit, the roll order can be changed, and it is not necessary to separately prepare a replacement roll unit or arrange a special mechanism for changing the order.

The tension leveler according to claim 4 is
4. The tension leveler according to claim 3, further comprising: d) a roll unit of a lower roll of a pair of rolls whose front and rear order can be changed can be moved up and down by an elevating means provided in the housing, and mounted when the descent is performed. E) reciprocating in the plate width direction from the housing to the side support table along the rail to be placed, e) lifting means for the roll unit of the upper roll of the pair of rolls provided in the housing And can be reciprocated in the plate width direction within the housing along the rail on which it is placed when it is lowered, and can be placed on the roll unit of the lower roll via the support member. -Characterized by the following.

With a tension leveler having such a configuration,
For a pair of rolls whose arrangement order is to be changed (or other maintenance is to be performed), the roll unit of the lower roll or the roll unit of the upper and lower rolls can be easily pulled out from the housing to the side. The lower roll unit is pulled out because the lower roll unit can move along the rail as described in d) above onto the support provided on the side of the housing. Both upper and lower roll units can be pulled out to the side of the housing,
This is because the roll unit of the upper roll can be placed as shown in e) on the lower roll unit moving sideways.

Since the upper and lower roll units can be moved up and down, and the upper roll unit can be moved in the width direction of the plate along the rail in the housing, the plate is passed through the housing of the tension leveler. Even in the state in which each roll unit is located, the roll units can be moved to the side of the housing so that the plate is not damaged by the upper and lower rolls. In that case, the upper roll unit can be pulled out to the side stably by inserting the support member between the lower roll unit and the lower roll unit sequentially at the part that protrudes from the inside of the housing (rail). It is.

If the lower roll unit or the upper and lower roll units can be pulled out from the housing sideways in this way, the order of rolls to be changed by changing the direction of the roll unit in the plate width direction as described above can be particularly reduced. It can be easily performed. This is because the direction of the roll unit pulled out from the housing can be easily changed by hanging it with an overhead crane or the like. To change the direction of the lower roll, pull out only the lower roll unit.To change the direction of the upper roll, pull out both the upper and lower roll units and turn only the upper roll unit. You can change it. After the direction of the roll is changed in this way, the roll unit is moved into the housing again along the rail while using the supporting member as appropriate, and is set to a predetermined height by using the elevating means.

[0017] The tension leveler according to claim 5 is
5. The tension leveler according to claim 3, further comprising: f) a roll unit of one of the upper and lower rolls of the pair of rolls, the order of which can be changed in the front and rear direction, wherein the direction of the width direction of the roll is reversed. Can be removed from the housing in a certain direction in the width direction of the plate (for example, to the operator side, which is the left or right side of the plate to be fed), and g) a roll unit is provided in the housing. The closer to the take-out side (the operator side in the case of parentheses above f), the greater the spacing in the plate length direction (direction along the length of the strip; equivalent to the width direction of the roll unit), Arrange the mounting members for the roll unit. H) The part of the roll unit that is to be attached to the housing shall be in the direction of the plate length between the mounting surfaces (as described above). To match the spacing of the mounting member dimensions of the housing of the unit corresponding to the width direction of the) mounted interchangeably different liner thicknesses - characterized in that.

With such a tension leveler,
As described above, the roll unit can be easily taken out of the housing, further changed the orientation, and then reinserted into the housing. The roll unit can be removed from the housing as in the above f), and the mounting member for the roll unit in the housing g)
The distance between the mounting surfaces of the roll unit is increased as the distance is closer to the take-out side of the roll unit. Because there is. In other words, if the distance between the mounting members in the housing and the dimension between the mounting surfaces in the roll unit are both larger in this way closer to the take-out side,
The work of taking the roll unit in and out of the housing is clearly easier to perform. If the roll unit with the roll position offset can be easily moved in and out in this way, the roll order for the roll pair including the roll can be easily changed, and the change in the direction and strength of the residual warp can be prepared in a short time. It can be easily done by work.

The dimension between the mounting surfaces of the roll unit is set by replacing liners having different thicknesses as shown in h). Therefore, when changing the orientation of the roll unit, it is necessary to replace the liner so that its dimensions between the mounting surfaces are adapted to the spacing of the mounting members in the housing. However, by using such a liner, it is not necessary to prepare a plurality of roll units having different dimensional arrangements between mounting surfaces.

[0020] The tension leveler according to claim 6 is
In the tension leveler having the features of claim 1 or 2, out of a pair of rolls whose order can be changed, a roll unit in which a roll, a bearing, and a bearing box are integrally assembled with respect to a housing is arranged in front and rear of the housing. As described above, the position can be changed (and fixed) by sliding in the upstream / downstream direction.

In such a tension leveler,
The order of the rolls in the roll pair can be changed by sliding the roll unit back and forth with respect to the housing. Therefore, by operating the tension leveler while fixing the roll unit at the changed position, it is possible to intentionally change the direction and strength of the residual warpage of the plate passed therethrough. Since there is no need to remove the roll unit from the housing, this tension leveler has the advantage that the order of the rolls and thus the direction and strength of the residual warpage can be changed by a simple operation.

According to a seventh aspect of the present invention, in the tension leveler according to the sixth aspect, a sliding surface (a surface where the roll unit and the housing come into contact with each other) for sliding the roll unit as described above is paired. A cylindrical surface (surface forming part of the side surface of the cylinder) symmetrical with respect to a surface (virtual surface) set in the plate thickness direction (direction of the thickness of the plate) so as to pass through the center line of the other roll forming It is characterized by the following.

In this way, it is easy to keep the roll unit of the roll that slides and moves always in a preferable position and posture with respect to the other roll forming the pair. This is because, of the moving roll units, the essential roll that comes into contact with the plate can be moved back and forth while being arranged close to the other paired roll.

The tension leveler according to claim 8 is the tension leveler according to claim 6, wherein the slide surface (the surface where the roll unit and the housing come into contact with each other) for sliding the roll unit as described above is provided.
It is characterized by having a flat flat surface in the front-rear direction.

[0025] A tension leveler according to claim 8 is also provided.
It is easy to always keep the roll unit of the roll that slides in a favorable position and posture with respect to the other roll in the pair, especially the slide surface is flat, and the upper and lower roll units are linearly Is moved.

[0026]

FIG. 1 shows an embodiment of the present invention.
6 to FIG. FIG. 1 is an overall side view of the tension leveler 1, and FIGS. 2A, 2B, and 2C are enlarged views showing only the vicinity of a roll in each of the roll portions 2 and 3 of the tension leveler 1. FIG. It is. FIG. 3 is an enlarged detailed view showing the vicinity of the roll end of the rear part 20 of the extension roll portion 2, wherein FIG. 3 (a) is viewed from the end face of the shaft, and FIG. 3 (b) is the side surface of the shaft. It is seen from. FIG. 4 is a front view of the tension leveler 1 (a view taken along the line IV-IV in FIG. 1). FIG. 5 is a side view of the roll units 23 and 24 of the rear part 20 from the housing 4 of the tension leveler 1. It is a figure showing the point of taking out. FIG.
The relationship between the roll unit 23 and the housing 4 is shown by a VI-VI section in FIG.

As described above, the tension leveler 1
As shown in FIG. 1, an elongate roll part 2 and a shape correcting roll part 3 are provided in order from the upstream side, and are provided between the bridging rolls 8 and 9 to correct the flatness of the plate (strip of steel plate) p. ing. The extension roll portion 2 includes a front portion 10 and a rear portion 20, and the tension leveler 1 is configured by incorporating both of them and the shape modification roll portion 3 downstream thereof into a common housing 4.

The elongating roll 2 is a portion that generates elongation by repeatedly bending the plate p while applying tension to the plate p. This is the part that removes the warpage. As shown in FIG. 2, a pair of upper and lower rolls (work rolls) 11 and 12 are arranged in the front part 10 of the extension roll part 2 with slightly shifted front and rear so as to exhibit such a function.
Similarly, a pair of upper and lower rolls (work rolls) 21 and 22 are also arranged in the succeeding-stage portion 20 with their positions shifted back and forth. As the shape correcting roll unit 3, a plurality of rolls (work rolls) 33a, 33b, 33c and 34a, 34b,
34c are arranged.

In each of the front part 10 and the rear part 20 of the extension roll part 2 and each part of the shape correcting roll part 3, the above-mentioned upper and lower rolls are integrally assembled in a roll unit, and Attached to. In each roll unit, intermediate rolls and backup rolls that are in contact with each back and side to prevent deflection, bearings for all rolls, bearing boxes (parts with built-in bearings and frame connecting them) Is included. For example, upper and lower rolls 21 and 22 in the rear part 20 of the extension roll 2 are shown in FIG.
The roll units 23 and 24 are configured as shown in FIG. That is, the upper roll 21 includes the intermediate rolls 21a and 21b and the backup rolls 21c and 21c.
d and 21e, and assembling the bearings 21j and 21k with the bearing boxes 21m and 21n to form a roll unit 23.
It is summarized in. Similarly, the lower roll 22 also includes the intermediate rolls 22a and 22b and the backup roll 22c.
The roll unit 24 is configured by assembling 22d and 22e and their bearings with a bearing box. FIG.
Each of the parts denoted by reference numerals 13, 14, 33, 34 in (a) and (c) is a roll unit having the same configuration.

FIG. 4 is a rear view (downstream side) of the rear part 20 of the elongating roll 2 viewed from the rear (downstream side) (view taken along the line IV-IV in FIG. 1). An upper roll unit 23 and a lower roll unit 24 are arranged in the housing 4. The upper roll unit 23 has wheels 25 attached to its upper part, and rails 52 serving as guide tracks for the wheels 25 are provided.
Has a hydraulic cylinder 5 provided on the upper part of the housing 4.
1 are connected. The roll unit 23 can move up and down by using the hydraulic cylinder 51 as an elevating means.
The height position at the time of use is set by contacting the frame 4a shown in (b). At this time, the position in the plate width direction is also determined by a key plate (not shown) attached near the end of the housing 4. On the other hand, the lower roll unit 24 can also be moved up and down using a worm jack 53 with a geared motor 53a and a hydraulic cylinder 54 arranged below as shown in FIG. A rail 55 serving as a guide track is provided at a lower portion of the housing 4. Similarly to the roll unit 23, the roll unit 24 is pushed up by the elevating means to set the height position in use,
The position in the plate width direction is also determined by the same key plate (not shown) as described above. Upper and lower roll units 23
Reference numeral 24 denotes a state in which when the key plate is removed and the key plate is fully lowered, the key plate is not restrained by the respective lifting / lowering means, and along the rails 52 and 55 in the plate width direction (the left and right sides in FIGS. , The right side is the so-called operator side and the left side is the so-called drive side). In the structure shown in FIG. 4, there is no substantial difference between the front section 10 of the extension roll section 2 and the shape correction roll section 3, and the elevation of the upper and lower roll units, the position setting, and the movement in the plate width direction are not performed. The operations are performed in the same manner as described above.

In the tension leveler 1, there are six roll units 13, 14, 23, 24, 33 as shown in FIG.
34 so that each of the rolls 23 can be easily pulled out from the housing 4 in the plate width direction (operator side). The direction is changed so that it can be returned to the original position in the housing 4 again. The reason that each roll unit can be pulled out in the plate width direction is to facilitate maintenance of each roll unit outside the housing 4. The reason why the direction of the roll unit 23 can be changed and reinserted is to change the direction of the residual warpage generated on the plate p in the extension roll portion 2 arbitrarily. Hereinafter, a configuration related to drawing out each roll unit in the plate width direction and a configuration related to changing the direction of the residual warp of the plate p will be described.

First, the roll units 13, 14, 23,
In order to pull out each of 24, 33, and 34 from the housing 4 in the plate width direction (operator side), a maintenance support 5 is installed on the operator side as shown in FIG. The case where the roll units 23 and 24 are pulled out will be described as an example (the same applies to other roll units as well). A push-pull mechanism 7 for moving the roll units 23 and 24 while keeping the heights continuous is provided. Push-pull mechanism 7
Is a method in which a chain 7b is circulated by a driving motor 7a, and the roll unit 24 is reciprocated by a connector 7c having the chain attached to a part of the chain 7b.

When pulling out the lower roll unit 24 to the operator side, the above-mentioned key plate is removed, and the elevating means (the worm jack 53 and the hydraulic cylinder 5) are removed.
In step 4), the roll unit 24 is lowered onto the rail 55, and then the push / pull mechanism 7 is connected, activated, and moved onto the rail 6 of the support base 5. When pulling out the upper roll unit 23, when the lower roll unit 24 is lowered on the rail 55, the support members 71 and 72 are mounted on the roll unit 24 as shown on the left side (solid line portion) of FIG. Further, by removing the key plate from the upper roll unit 23 and activating the lifting / lowering means (hydraulic cylinder 51), the support member 71.
72 and connected to the support members 71 and 72 with bolts or the like. In this state, if the lower roll unit 24 is connected to the push-pull mechanism 7 and pulled out, the roll unit 23 placed on the upper unit also moves onto the support 5 on the operator side at the same time. When pulling out the upper roll unit 23 in a state where the plate p is passed through the tension leveler 1, first, the operator-side support member 71 is provided between the roll units 23 and 24.
At the time when the roll units 23 and 24 move out of the range of the plate p by the push-pull mechanism 7 (when they move to near the imaginary line position in the center of FIG. 5), the roll units 23 and 24 are also provided on the drive side (left side in the drawing). The support member 72 between 24 may be attached. Even when the driving-side support member 72 is not attached, the upper roll unit 23 can be smoothly moved in the plate width direction by being guided by the rail 52 until it comes out of the housing 4.

The configuration for arbitrarily changing the direction of the residual warp generated on the plate p is such that the direction of the roll unit 23 is changed as described above, and the roll unit 23 can be inserted into the housing 4 again. Roll unit 2
3 is the position of the roll 21 in FIG.
It is offset as shown in FIG. That is, the roll 21 is disposed at a position deviated forward (or rearward) from the center position of the roll unit 23 (the center of the storage of the roll unit 23 with respect to the housing 4 and the center line extending in the plate width direction). Since the intermediate rolls 21a and 21b and the backup rolls 21c, 21d and 21e are arranged on the basis of the roll 21, all of the roll groups in the roll unit 23 are replaced with the roll unit 2
3 is offset from the center position. Therefore, when the roll unit 23 is returned to the original position in the housing 4 by changing the direction in the plate width direction, the front-rear relationship (the order of contact with the plate p) between the upper roll 21 and the lower roll 22 is reversed. (See the solid line portion and the virtual line portion in FIG. 3A). If the order of the rolls, especially the upper and lower rolls 21 and 22 in the rear part 20 of the elongating roll part 2 is changed, the direction of the residual warp generated on the plate p changes, and according to the above configuration, the tension leveler In (1), the direction of the residual warp which is practically inevitably generated on the plate p can be arbitrarily changed in accordance with various circumstances in the downstream process or the like.

To change the orientation of the roll unit 23, as described above (see FIG. 5), pull out the roll unit 23 together with the roll unit 24 to the operator side (on the support base 5) and use an overhead crane or the like. Can be easily performed. However, in the tension leveler 1, as a means for smoothly attaching the roll unit 23 whose direction has been changed to the original position in the housing 4, the following contrivance is applied to a portion where the two come into contact with each other. That is, the distances w _4b1 and w _4b2 of the mounting members 4 _b1 and 4 _b2 of the housing 4 shown in FIG.
Is a relationship between the dimensions w ₂₃ etc. between the mounting surface of the third mounting portion. That is, as shown in FIG. 6, the roll unit 23 overlaps the liners 23x (thickness t ₁ ) and 23y (thickness t ₂ ) on mounting portions provided at two places on the operator side (upper side of the figure) and the drive side, Similarly, the space is set in the spaces (widths w _4b1 and w _4b2 ) inside the mounting members 4 _b1 and 4 _b2 in the liner-attached housing 4, and their dimensional relationships are determined as follows.

[0036] 1) the surface dimension between attachment portions of the two places in the roll unit 23 (width dimension), either as in Fig was w _23. Roll unit 2 with constant width
No. 3 is easy to manufacture.

2) Mounting member 4 _b1 provided on housing 4
- 4 for each interval w _4b1 · w _4b2 in _b2 is larger than the distance w _4b2 of the mounting member 4 _b2 of the interval w _4b1 of the mounting member 4 _b1 close to the operator side drive side (e.g. the difference between the 6mm) did. When the direction is changed, the roll unit 23 is pulled out to the operator side as described above, and is returned from that side. This is because a wider opening on the operator side allows the roll unit 23 to be easily taken in and out.

3) Liners 23x and 23y having different thicknesses were attached to the respective mounting portions of the roll unit 23, and the dimensions between the surfaces were made closer to the above-described intervals _w4b1 and _w4b2 in the housing 4. That is, the thickness of the liner 23x provided on the mounting portion on the operator side is thicker than the thickness of the liner 23y provided on the drive side (for example, 3 mm on one side, 6 mm in total in total), and the above-mentioned interval w
The difference between _4b1 and _w4b2 was adapted. As a result, the roll unit 23 held at the predetermined position is stably held in the housing 4. However, to avoid out of the roll unit 23 becomes difficult, and a dimensioned so that a gap of about 0.1mm respectively between the liner 23x · 23y and the attachment member 4 _b1 · 4 _b2.

4) The above-mentioned liners 23x and 23y attached to the roll unit 23 are mounted so as to be exchangeable using bolts or the like (not shown). Liner 23x
By exchanging 23y ·, while reversing the plate width direction of orientation of the roll unit 23 as appropriate, as described above, it can be reinserted into the original housing 4 unequal intervals w _4b1 · w _4b2. In addition, liners 23x and 23
If y is not replaced or a liner is not used, it is necessary to manufacture another roll unit having a different direction from the roll unit 23.

The roll units 13, 14, 24, 33, and 34 that do not change direction also have the above-mentioned 4 units.
The items 1), 2) and 3) are adopted in the same way.

7 (a) and 7 (b) show another embodiment of the present invention. The figure shows an upper roll (work roll) 81 that is slightly shifted forward or backward with respect to a lower roll (work roll) 82 to form a pair,
A roll unit 83 including support rolls 81a and 81b of the roll 81, and a roll unit 83
And a part of a housing 84 for holding the tension leveler.

In this tension leveler, the upper roll unit 83 is attached to the slide surface 84a of the housing 84 so as to be slidable in the front-rear direction (ie, on both the upstream side and the downstream side). The slide surface 84a is a cylindrical surface having a constant curvature (the lower side is a smooth concave surface and the angle range is about 90 °), and is arranged so as to be symmetric with respect to a vertical plane passing through the center of the lower roll 82.
A slide surface 83a having the same curvature as the slide surface 84a.
Is formed on the upper part of the roll unit 83, and the two are overlapped, coupled by using fastening means (bolts and nuts or the like) 85 which are easy to release, and further, driving means (fluid pressure cylinder) attached to a part of the housing 84. Etc.) 86 is connected to the roll unit 83.

The slide surface 83a.
When the roll unit 83 is moved by operating the driving means 86 after releasing the connection between the rolls 84a, the roll unit 83 moves as shown in FIG. The position (the order of front and rear) of the roll 81 changes. If the slide surfaces 83a and 84a are fastened and fixed again at that position, the direction of the residual warp of the plate p can be changed to that in the subsequent operation with the tension leveler. By placing the roll unit 83 at an arbitrary position within the range of the slide surface 83a, it is possible to appropriately change and adjust the strength of the residual warpage.

FIGS. 8A and 8B show still another embodiment of the present invention. FIGS. 7A and 7B correspond to FIGS. 7A and 7B, in which the upper roll (work roll) 91 and the lower roll (work roll) 92 are slightly shifted forward or backward to form a pair. A roll unit 93 including support rolls 91a and 91b of the roll 91,
Further, it shows a part of the housing 94 holding the roll unit 93, and shows a part of the tension leveler.

In this tension leveler, the upper roll unit 93 is attached to the slide surface 94a of the housing 94 so as to be slidable in the front-rear direction similarly to the tension leveler shown in FIG. Is different from the tension leveler shown in FIG. 7 in that it comprises a linear flat surface. However, the other points are common. That is,
A flat slide surface 93a corresponding to the slide surface 94a is formed on the upper part of the roll unit 93, and the two are overlapped and connected by using fastening means (bolt / nut or the like) 95 which is easy to release. The drive unit (fluid pressure cylinder etc.) 96 attached to a part is connected to the roll unit 93, and the lower roll unit (not shown) including the lower roll 92 is moved up and down the cylinder (not shown).
In the state where the slide surfaces 93a and 94a are lowered by the fastening means 95, the driving means 9
6A to move the roll unit 93, the roll unit 93 moves from FIG. 8A to FIG. 8B, and the upper roll 91 with respect to the lower roll 92.
(The order of front and rear) is changed, so that the slide surfaces 93a and 94a are fastened and fixed again at that position, and the lower roll unit (not shown) is raised by a lifting cylinder (not shown). In the subsequent operation in the above, the direction of the residual warp of the plate p can be changed as before, and by placing the roll unit 93 at an arbitrary position within the range of the slide surface 93a, the strength of the residual warp can be reduced. The points that can be appropriately changed and adjusted are common.

[0046]

According to the tension leveler according to the first aspect, the direction and strength of the residual warp in the plate exiting the tension leveler can be intentionally changed, and can be adjusted according to the circumstances in the downstream process. It becomes possible to handle the board smoothly. There is also an advantage that it is not necessary to introduce a large-scale straightening device to eliminate the residual warpage, and it is not necessary to prepare another roll to be replaced.

According to the tension leveler of the second aspect, the strength and direction of the residual warpage can be effectively changed by a simple operation.

According to the tension leveler of the third aspect, the order of rolls for changing the residual warpage can be easily changed. Since the same roll unit can be used simply by changing the direction, there is an advantage that it is not necessary to separately prepare a replacement roll unit or arrange a special mechanism for changing the order.

According to the tension leveler of the fourth aspect, the roll unit can be easily pulled out from the housing to the side, so that the roll order can be particularly easily changed. Even when a plate is passed through the housing of the tension leveler, the roll unit can be moved to the side so as not to damage the plate.

According to the tension leveler of the present invention, the work of taking the roll unit in and out of the housing can be easily performed, and therefore, the order of the rolls for changing the residual warpage can be easily changed by the short preparation work. It becomes possible. Since the liners having different thicknesses are used interchangeably between the mounting surfaces of the roll units, it is not necessary to prepare a plurality of roll units having different dimensional arrangements between the mounting surfaces, and the equipment cost can be reduced.

According to the tension leveler of the present invention, the roll order can be changed by a simple operation of sliding the roll unit back and forth without taking it out of the housing, and the direction and strength of the residual warpage can be changed. Can be easily changed.

According to the tension levelers of the seventh and eighth aspects, it is particularly easy to keep the roll unit which slides and moves always in a preferable position and posture with respect to the other roll forming a pair.

[Brief description of the drawings]

FIG. 1 is a side view showing the entirety of a tension leveler 1 according to an embodiment of the present invention.

FIGS. 2 (a), (b) and (c) show the front part 10 and the rear part 20 of the elongating roll part 2 of the tension leveler 1 and the respective parts of the shape correcting roll part 3 only in the vicinity of the roll. FIG.

3 is an enlarged detail view showing the vicinity of a roll end of a rear part 20 of the extension roll portion 2, wherein FIG. 3 (a) is a view from the end face side of the shaft, and FIG. 3 (b) is a side surface of the shaft. Seen from the side.

FIG. 4 is a front view of the tension leveler 1, and FIG.
FIG. 4 is a view taken along arrow IV-IV in FIG.

FIG. 5 shows a roll unit 2 in the rear part 20 of the extension roll 2 from the housing 4 of the tension leveler 1.
It is a front view which shows the point for taking out 3 and 24 to a side.

FIG. 6 is a diagram showing a relationship between the roll unit 23 and the housing 4 by a VI-VI section in FIG. 1;

FIG. 7 is a diagram showing a part of another tension leveler as another embodiment related to the embodiment of the invention. Fig. 7 (a)
The position of the roll unit 83 is changed between (b) and the arrangement order of the rolls 81 and 82 is reversed.

FIG. 8 is a diagram showing a part of another tension leveler as still another embodiment related to the embodiment of the invention. FIG.
The position of the roll unit 93 is changed between (a) and (b), and the arrangement order of the rolls 91 and 92 is reversed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tension leveler 2 Extension roll part 3 Shape correction roll part 4.84.94 Housing 5 Support base 10 Front part 20 Rear part 21.22.81.82.91.92 Roll 23.24.83.93 Roll unit 23x. 23y liner p board

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Haruhiko Nakata 3-1-1 Higashi Kawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries, Ltd. Kobe Plant F-term (reference) 4E003 AA02 BA11 BA14 BA15

Claims (8)

[Claims] 1. A tension leveler having a plurality of rolls above and below a plate to be passed as a stretching roll portion and a shape correcting roll portion, wherein the order of at least one pair of rolls forming a pair up and down can be changed. A tension leveler. 2. The tension leveler according to claim 1, wherein the order of the last pair of rolls in the extension roll portion can be changed. 3. A roll unit, in which a roll, a bearing, and a bearing box are integrally assembled with one of upper and lower rolls of a pair of rolls whose front and rear order can be changed, is detachably attached to a housing, The position of the roll in the roll unit is offset either forward or backward from the center line of the roll unit extending in the plate width direction, and the roll unit is reversed in the plate width direction to its original position in the housing. The tension leveler according to claim 1, wherein the tension leveler can be attached to the tension leveler. 4. A roll unit of a lower roll of a pair of rolls whose front and rear order can be changed can be moved up and down by a lifting means provided in a housing, and along a rail to be mounted when lowered. The roll unit of the upper roll of the pair of rolls can be moved up and down by an elevating means provided in the housing, and can be moved down from the housing to the side support base in the plate width direction. 4. The device according to claim 3, wherein the reciprocating member can be reciprocated in the width direction of the housing within the housing along the rail to be mounted, and can be mounted on a roll unit of a lower roll via a support member. The described tension leveler. 5. A roll unit of one of upper and lower rolls of a pair of rolls whose order in front and rear can be changed and which can be attached to an original position in a housing by reversing a direction of a plate width direction, In addition to being able to be taken out of the housing in a fixed direction in the plate width direction, a mounting member for the roll unit is arranged in the housing so that the distance in the plate length direction increases as the roll unit is closer to the take-out side. A liner having a different thickness is exchangeably mounted on a portion of the unit to be attached to the housing so that a length in a plate length between the mounting surfaces is adapted to a distance between the mounting members in the housing. The tension leveler according to claim 3 or 4, wherein 6. A roll unit in which a roll, a bearing, and a bearing box are integrally assembled with one of upper and lower rolls of a pair of rolls whose front and rear order can be changed, slide in the front and rear direction with respect to the housing. 3. The tension leveler according to claim 1, wherein the position of the tension leveler can be changed. 7. A sliding surface for sliding the roll unit as described above is a cylindrical surface symmetrical with respect to a surface that is erected in the sheet thickness direction through the center line of the other pair of rolls. The tension leveler according to claim 6, wherein 8. The tension leveler according to claim 6, wherein the slide surface for sliding the roll unit as described above is a flat surface that is linear in the front-rear direction.