JP2002160007A - Side guide unit and finish-rolling mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side guide unit and so on constituted as a whole compactly and capable of arranging an edger and an H stand in a closed state with each other. SOLUTION: The side guide unit 10 is to guide the travel of a strip X and is annexed to a finish-rolling mill 1. The side guide unit 10 is composed of a) a main frame 14 installed between a pair of posts 3c and 3d of the H stand 3, which posts are located with the strip X in between, b) a pair of side guides proper 11 and 12 which are supported and guided by the main frame 14 and are movable across the width of the strip X, and c) a drive means 15 mounted on the main frame 14 which moves the guides proper 11 and 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side guide device used for finish-rolling a strip (strip-shaped metal plate), and a finish rolling mill having such a side guide device. is there.

[0002]

2. Description of the Related Art When a strip is hot-rolled, a side guide device is used to prevent the strip from bending or meandering when the tip is passed through a rolling mill. In the side guide device, a pair of side guide bodies is arranged on both sides of a strip passing portion of the strip, and the feed of the strip is guided by them. Since the width of the strip is not constant, a device of a type capable of adjusting the distance between the side guide bodies is generally used. FIGS. 6 and 7 show a conventional side guide device having such an interval adjusting function. These are disclosed in
No. 101004 and JP-A-5-317947.

The side guide device 10 'in FIG. 6 rolls the strip X in the width direction by the vertical rolls 2a' and 2b 'and rolls the strip X in the thickness direction by the horizontal roll 3a'. H stand 3 'and two opposing side guide bodies 1
Drive shaft 1 so that the distance between 1 'and 12' can be adjusted.
8 ′. That is, the side guide body 10 'is fitted to the threaded portions S1 and S2 (having different screw directions) in the horizontally supported drive shaft 18', and the drive shaft 18 'is connected to the external motor 19'. It is connected to the. When the drive shaft 18 'is rotated by the motor 19', the two side guide bodies 11 '
12 'moves by the action of the threaded portions S1 and S2 to change the distance between each other. In the illustrated finishing mill, reference numerals 3c 'and 3d' denote posts (posts or legs) of a housing for the H stand 3 '.

[0004] Further, a side guide device 10 "shown in Fig. 7 is a housing post 3c", 3d "that stands on the left and right of a rolling mill.
Between the side guide body 11 "
12 "approaches and separates under the action of the two screw shafts 16a" and 16b "and 17a" and 17b ".
That is, the motor 1 provided outside the posts 3c "and 3d"
By turning the screw shafts 16a "and 16b" and 17a "and 17b" from 9 "through the transmission shaft 18" and the like to rotate the screw shafts 16a "and 16b", the side guide bodies 11 "and"
12 "move in the opposite direction to change the distance between each other.

[0005]

The conventional side guide devices introduced in FIGS. 6 and 7 have the following problems.
That is, a) the device is not compact. That is, since the motor as the driving means of the side guide body is provided outside the housing of the rolling mill, a large occupied space is taken as a whole.

(B) The structure for driving the side guide body is complicated. This is because a rotation operation using a motor as a drive source is converted into a linear operation by the action of a screw (screw). In particular, in the apparatus shown in FIG. 7, since two screw shafts are used for each of the upper and lower sides to maintain the posture of the side guide body, the structure is considerably complicated. In addition, screws and screws are parts where metals slide with each other,
Frequent maintenance such as cleaning and refueling is indispensable for the side guide device because the environment around the rolling mill is where scales (iron oxide film pieces) and iron powder are scattered.

(C) It is difficult to arrange the edger and the H stand close to each other. When the thickness of the strip is thin, the distance between the edger and the H-stand may be reduced as much as possible to prevent deformation near the front and rear ends of the strip. However, if the driving means is provided outside the housing as in (a) above,
It is difficult to bring both within a certain distance. For example, in the case of FIG. 6, if the edger 2 'and the H-stand 3' are brought closer to each other than shown, the posts 3c 'and 3d' of the H-stand housing and the edger housing 2c 'come closer to each other, and Space for providing the guide device 10 'is eliminated.

D) The side guide bodies on both sides cannot be individually moved. This is because a screw (screw) connected to one motor is used as the driving means. When the driving means is operated to move one side guide main body, the other side guide main body is also moved by the same distance. Move in the opposite direction. Therefore, the position of each side guide body cannot be finely adjusted individually,
When the center position of the strip feed is changed, it is impossible to change the position of the side guide body (the pair of center positions) in accordance with the change.

An object of the present invention is to provide a side guide device capable of solving the above-mentioned problems (a) to (d) and a finish rolling mill that effectively utilizes such a side guide device.

[0010]

SUMMARY OF THE INVENTION A side guide device according to the present invention is characterized in that an H-stand housing having posts in pairs with a pair of strips (i.e., oppositely arranged on the left and right of the path along which the strips are transported) is provided. A main frame mounted between the posts, a pair of side guide bodies supported and guided by the main frame, and capable of moving in the width direction of the strip (that is, in a horizontal direction perpendicular to the direction in which the strip is fed); And a driving means attached to the main frame and moving the side guide body within a range between the above-mentioned posts.

This side guide device has the following operation. That is: The whole device is compact. Indispensable components of the side guide device-that is, a pair of side guide bodies, a main frame that supports the guide bodies and guides movement, and a driving unit that moves the side guide bodies (that is, adjusts the distance)- Are arranged so as to fit between the posts of the H stand housing (posts forming a pair with the strip interposed therebetween). Therefore, it is possible to collectively arrange the devices even in a considerably narrow space.

It is possible to arrange the edger and the H stand very close to each other. For example, if the entire device (excluding a part of a pipe and a cable) is arranged between a pair of left and right posts in the H stand housing so that a part of the device does not protrude to the edger side, It is also possible to arrange the edger at a position that is not spaced from the post on the H stand. If the two can be arranged close to each other, deformation of the thin strip near the front and rear ends can be prevented.

According to a second aspect of the present invention, the driving means is a pair of hydraulic cylinders.
The cylinders are arranged adjacent to each other in the opposite direction with the longitudinal direction along the width direction of the strip (that is, the direction in which the side guide moves), and each moving end (the tip of the piston rod) is placed on the side guide body. It is characterized by being directly connected to a part thereof (that is, not via a transmission means such as a link or a gear).

According to this side guide device, the following operation is obtained in addition to the above. That is: The structure for driving the side guide body is simple. This is because the movement of the side guide body, that is, the linear motion is directly obtained by the fluid pressure cylinder, and does not include a mechanism for converting the rotation motion by the motor or the like into the linear motion.
The fact that the moving end of the fluid pressure cylinder is directly connected to a part of the side guide body without using a transmission means such as changing the direction of operation also simplifies the driving structure.

The device is particularly compact. This is because, as described above, there is no change in operation and the driving structure is simple, and two (one pair) hydraulic cylinders, which are generally small in size, are arranged adjacent to each other in directions other than the operation direction. By reversing the direction of each cylinder, the moving end of each cylinder will be provided at a position near each side guide body arranged on the left and right of the strip path, so the connection between the cylinder and the side guide body will also be It becomes compact.

[0016] The side guide bodies can be individually moved in an arbitrary direction by an arbitrary distance. This is because (the moving end of) the hydraulic cylinder is connected to each side guide body. Therefore, it is possible to finely adjust the position of the side guide main body to the optimum position. Further, for example, when the strip passing path (feed position) is shifted left and right, it is also possible to adjust the position so that the pair of side guide bodies are shifted left and right as a whole.

The use of a hydraulic cylinder as the driving means is advantageous in terms of cost and the like. For example, even if multiple side guide devices are arranged in one production line, if the pipes and valves that supply fluid are connected properly,
This is because a plurality of fluid supply sources are unnecessary. This means
This is significantly different from the case where a motor or the like is used as a power source.

A side guide device according to a third aspect of the present invention is further characterized in that a sensor for detecting mutual displacement between the cylinder body and the piston rod is incorporated in the above-mentioned hydraulic cylinder. .

With this device, in addition to the above operation, the position of each side guide main body can be correctly recognized by the above-mentioned sensor, and therefore, the side guide main body can be accurately arranged at an appropriate position for rolling. .
This is because the sensor detects the displacement of the piston rod with respect to the cylinder body, so that the position of the side guide body that moves with the piston rod can be correctly grasped. The fact that the respective positions can be recognized correctly in addition to the fact that the respective side guide bodies can be individually moved as described above is extremely preferable in order to smoothly perform the finish rolling of the strip.

The above-mentioned sensor can exhibit its function for a long time. It is not an exposed part where dust (scale, iron powder, etc.) is likely to adhere or accumulate, such as between the side guide body and the main frame. Instead, the inside of the cylinder body (or the cover attached to the cylinder body) as described above This is because the sensor is disposed in the area covered by the sensor.

According to a fourth aspect of the present invention, the lower part of the main frame is opened or made openable so that a pipe (piping; including a metal pipe and a hose) and a cable (electric wire) in the hydraulic cylinder are provided. ) Is provided in the lower part of the cylinder.

The side guide device further has the following operation. That is: ・ Maintenance can be performed easily. Most of the maintenance required for the side guide device is related to the hydraulic cylinder as the driving means. This is because the cylinder has a built-in rubber part that deteriorates with time, and also includes a part that slides and wears on a connection part with the side guide body. However, in the case of this side guide device, the lower portion of the main frame on which the fluid pressure cylinder is mounted is open or openable, so that inspection, repair, replacement and the like of the cylinder can be performed from the lower portion. In addition, since the connecting portion of the pipe and the cable in the cylinder is provided in a lower portion of the cylinder, maintenance on hoses, signal lines, and the like can be easily performed from below. Note that the upper portion of the main frame generally does not have an open structure because it needs to support a downward load acting on the side guide body from the strip.

[0023] The finishing mill according to claim 5 is characterized in that the strip of the H-stand housing has a pair of posts in a pair (ie, disposed on the left and right of the path along which the strip is conveyed), and the edger is mounted on the edge stand. A housing and one of the side guide devices described above are attached.

This finishing mill exerts the following effects. The edger housing and the side guide device are attached to the same post of the H stand housing, so that the edger and the H stand can be arranged at extremely close positions. The edge guider housing and the side guide device can be mounted on the same post because the side guide device described in claims 1 to 4 is compact, and the entirety between the paired posts in the H stand housing is provided. This is because they can be arranged. If the degree of the side guide device protruding from the space between the posts toward the edger is reduced, the edger can be provided at a close position adjacent to the post. In other words, the edger can be provided in a position very close to the H stand by a distance substantially equal to the cross-sectional dimension of the post of the housing. If the edger and the H stand can be arranged close to each other, the deformation of the thin strip can be prevented as described above.

[0025]

FIG. 1 shows an embodiment of the present invention.
FIG. FIG. 1 is a plan view (I in FIG. 2) showing a main part of a finishing mill 1 including a side guide device 10.
FIG. 2 is a front view of the finishing mill 1 (viewed along the line II-II in FIG. 1). FIG.
5 are detailed views of the side guide device 10, and FIG.
4 is a cross-sectional view in a front view (a cross-sectional view taken along the line III-III in FIG. 1),
Is a bottom view (a view taken along the line IV-IV in FIG. 2), and FIG. 5 is a transverse sectional view (a sectional view taken along the line VV in FIG. 2). In FIGS. 3 and 5, the cross section of the side guide main body 11 or 12 is hatched to the right and the cross section of the main frame 14 is hatched to the right.

As shown in FIG. 1, the finishing mill 1 comprises an edger 2 for rolling the strip X in the width direction by vertical rolls 2a and 2b, and a strip X by a horizontal roll 3a (and a horizontal roll (not shown) thereunder). An H stand 3 for rolling in the thickness direction is arranged in this order in the direction in which the strip X is fed (the direction of the white arrow). Reference numeral 2c in the figure is an edger housing, and reference numeral 3
b is the housing of the H stand 3, and reference numerals 3c and 3d
Are the posts (two near the edger 2) facing each other across the strip X in the H stand housing 3. In order to appropriately perform the rolling in the width direction by the edger 2 without breaking the shape of the strip X, it is generally desirable that the edger 2 and the H stand 3 be as close as possible. When the edger 2 is separated from the H stand 3 such as when the plate thickness is thin, the plate may be deformed in a U-shape due to the rolling load in the width direction, and such inconvenience is caused at the front and rear ends of the strip X. This is particularly likely to occur.

In this finishing mill 1, a side guide device 10 is arranged between the edger 2 and the H stand 3 as shown in FIGS. This device 10 is for guiding the strip X between the edger 2 and the H stand 3 and correctly guides the leading end of the plate to the H stand 3 at the start of rolling, and the meandering and slack of the plate during rolling. Function to prevent

As shown in FIG. 3, the side guide device 10 has side guide bodies 11 and 12 as main components.
And a main frame 14 and a driving means 15. The side guide bodies 11 and 12 are parts that directly exert the above-described guide function for the strip X. Since the width of the strip X is not constant, the main bodies 11 and 12 can be moved (interval adjustment) in the width direction. The main frame 14 supports the pair of main bodies 11 and 12 and guides the movement of the main bodies 11 and 12, and the driving unit 15 drives the movement of the main bodies 11 and 12. Hereinafter, the configuration of the device 10 will be described in detail.

First, the side guide bodies 11 and 12 are constituted by a portion near the upper pass line to guide the strip X, and a portion below and supported by the main frame 14 and engaged with the driving means 15. are doing. The former part serving as a guide includes side pieces 11a and 1 that regulate the position of the side edge (side) of the strip X.
2a, lower pieces 11b and 12b for supporting the lower surface of the strip X near the side edges thereof, and upper pieces 11c and 12c for guiding the upper surface of the strip X are integrally provided. 1
A liner is replaceably attached to each of the pieces 1a and 11b and 12a and 12b at a portion that slides on the strip X. As shown in FIG. 5, the lower piece 11b and the upper piece 11
The gap between the side guide body c and the other side guide body 12 is made smaller gradually in the direction in which the strip X is fed. In addition, as shown in FIGS.
Near the center of the side guide device 10, a fixed guide piece 13 is provided above the main frame 14. The fixed guide piece 13 has an upper surface whose height matches the upper surfaces of the lower pieces 11b and 12b, and can support the strip X near the center.

The lower part of the side guide body 11 is formed with guide pieces 11d and 11f and drive pieces 11e and 11g, as shown in FIG. 5, following the lower piece 11b. The guide pieces 11d and 11f are parts that slidably contact each part (side parts 14b and upper part 14a to be described later) of the main frame 14 via a liner, and the drive pieces 11e and 11g are driven by drive means 15 (to be described later). This is a portion connected to the moving portion (moving end 16e) of the hydraulic cylinder 16). As shown in FIGS. 3 and 4, the lower part of the other side guide body 12 also has the above-mentioned 11d and 11e.
・ 12d ・ 12e ・ 12f ・ 1 equivalent to 11f ・ 11g
2 g of each piece are formed.

As shown in FIG. 3, the main frame 14 supports the side guide bodies 11 and 12 and extends in the width direction of the strip X to guide the movement thereof, and the post 3c and 3d of the H stand 3 described above. And a part for attachment to the camera. The former part is shown in FIG.
And an upper surface member 14a that guides the upper guide pieces 11f (and 12f) of the main bodies 11 and 12 as shown in FIG.
Side member 1 that guides guide piece 11d on the side of 1 and 12
4b. The upper surface member 14a is shaped like a chevron so that the positions of the main bodies 11 and 12 are not easily deviated from the center line of the main frame 14 to either side, and the upper surfaces thereof are finished smoothly so that the main bodies 11 and 12 move smoothly. I have. The latter part for mounting is the bracket 1 shown in FIG.
4c and 14d, which are attached to the posts 3c and 3d integrally with the upper surface member 14a and the side member 14b using bolts, positioning pins, or the like. Of the main frame 14 including the brackets 14c and 14d,
The maximum dimension of the strip X in the width direction is determined by the posts 3c and 3
d, the distance between the opposing surfaces with the strip X interposed therebetween is matched, so that the main frame 14 is located within the range of the distance, that is, from the space between the posts 3c and 3d to the side (the width of the strip X). Direction) so that it does not protrude.

As shown in FIGS. 4 and 5, the driving means 15 is provided with two hydraulic cylinders 16.
17. Regarding the cylinders 16 and 17, the end members 16c and 17c on the side of the piston rods 16d and 17d in the cylinder bodies 16a and 17a
Is fixed to the main frame 14, and the moving ends 16e and 17e
That is, the distal ends of the piston rods 16d and 17d are connected to the driving pieces 11g and 12g of the side guide bodies 11 and 12, respectively. Since the main bodies 11 and 12 are separated in the width direction of the strip X and move in the width direction,
The directions of the cylinders 16 and 17 are reversed with the longitudinal direction along the width direction. The side guide body 11 can be moved in the width direction of the strip X along the main frame 14 by expanding and contracting the cylinder 16 and the side guide body 12 by expanding and contracting the cylinder 17.

Each of the hydraulic cylinders 16 and 17 has a total length at the maximum extension when the upper surface member 14a of the main frame 14 is provided.
And the one almost coincident with the side member 14b was used.
Piston rods 16d and 17d are cylinders 16 and 17
Because the cylinders 16 and 17 can move the side guide bodies 11 and 12 connected to their moving ends 16e and 17e from the position opened at the maximum interval as shown in FIG. It can be moved to a position almost hitting the fixed guide piece 13. Maximum length is top member 14
a, etc., almost coincide with the total length of this cylinder.
17 can also be compactly arranged within the range of the distance between the posts 3c and 3d in the H stand 3 while being integrated with the main frame 14.

Each hydraulic cylinder 16/17 has a cylinder body 16a / 17a and a piston rod 16d / 17.
and a sensor (not shown) for detecting a mutual displacement therebetween. Specifically, a device having a magnetic detection function such as a Hall element is mounted on the end member 16c / 1.
Attached inside 7c, piston rod 16d ・ 17d
A magnetic scale was formed on the magnetic strip attached to a part of the surface of the magnetic recording medium. If the displacement of the piston rods 16d and 17d with respect to the cylinder bodies 16a and 17a can be known by this, the side guide body 1 on the main frame 14
Positions 1 and 12 can be grasped, and their individual positions and intervals can be accurately controlled. FIG.
The cables 16g and 17g shown in FIG. 4 are signal lines from such sensors.

The lower portion of the main frame 14 to which the hydraulic cylinders 16 and 17 are attached has a large opening as shown in FIG. According to FIG. 5, unlike the upper part covered by the upper surface member 14a and the side part surrounded by the side member 14b, the lower part of the main frame 14 is not provided with a bottom plate or a lid. As shown in FIG. 5, the lowermost drive piece 11e is also used for the guide piece 1 at the lower part of the side guide bodies 11 and 12 formed so as to surround the main frame 14.
The lower portion of the main frame 14 can be fully opened, for example, by attaching a bolt so that it can be removed from 1d. And for cylinders 16 and 17,
The above cable 16g / 17g and supply pipe 1 for hydraulic oil
All the connection portions of 6f and 17f were provided on the lower side. Thus, maintenance (inspection / maintenance or replacement of parts) related to the hydraulic cylinders 16 and 17 can be easily performed from below the side guide device 10.

The side guide device 1 configured as described above
In addition to easy maintenance of the driving means 15 and free and accurate control of the position of the side guide bodies 11 and 12, the drive means 15 does not protrude left and right from between the posts 3c and 3d of the H stand 3. The big feature is that it is so compact that it can be mounted. Device 10 is so compact and post 3c
・ When mounted between 3d, edger housing 2
c can also be attached to the front surface of the same post 3c or 3d (the surface facing the upstream side of the strip X). In particular, when the side guide device 10 is mounted so as not to protrude from the front of the posts 3c and 3d as shown in FIG. 1, the edger housing 2c can be directly connected and fixed to the front of the posts 3c and 3d. The stand 3 can be arranged at a very close position. Finish rolling mill 1
As described above, it is preferable to bring the edger 2 closer to the H stand 3 in order to appropriately perform rolling in the width direction by the edger 2.

[0037]

The side guide device according to the first aspect has the following effects. Since the essential components of the side guide device are configured to fit between the posts of the H stand housing, the entire device is compact. This also allows the entire device to be placed in a fairly small space.

The edger and the H stand can be arranged very close by, for example, arranging the entire device between the left and right pairs of posts in the H stand housing. If the two can be arranged close to each other, deformation of the thin strip near the front and rear ends can be prevented.

According to the side guide device of the second aspect, the structure of the driving means is simple because linear movement of the side guide body is directly obtained by the fluid pressure cylinder.

In addition to the simplicity of the drive structure, since the hydraulic means having a small size in the direction other than the operation direction is used as the drive means, the device is particularly compact.

Each side guide body can be individually moved in an arbitrary direction by an arbitrary distance by the action of a hydraulic cylinder connected to each side guide body. Therefore, guidance of the strip can be performed more appropriately.

Since a hydraulic cylinder is used as the driving means, the number of power sources required when installing a plurality of units is small, which is advantageous in terms of cost and the like.

According to the third aspect of the present invention, the position of each side guide body can be correctly recognized by the sensor, and therefore, the side guide body can be accurately arranged at an appropriate position for rolling. In addition to being able to move each side guide body individually, each position can be correctly recognized in this way, which leads to smooth finishing of the strip.

Since the sensor is arranged on the cylinder body, not on an external device, the service life of the sensor is long and its function is exhibited for a long time.

According to the side guide device of the fourth aspect, it is possible to further perform inspection, repair, replacement, and the like of the fluid pressure cylinder, the hose, the signal line, and the like from the lower portion of the main frame. That is, necessary maintenance can be easily performed.

The finishing mill according to claim 5 has the following effects. That is, the edger and the H stand can be arranged very close to each other, so that even when a thin strip is finish-rolled, deformation near the front and rear ends can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention;
FIG. 3 is a plan view showing a main part of the finishing mill 1 including the side guide device 10 (a view taken along a line II in FIG. 2).

FIG. 2 is a front view of the finishing mill 1 shown in FIG.
FIG.

FIG. 3 is a sectional front view (a sectional view taken along line III-III in FIG. 1) of the side guide device 10.

FIG. 4 is a bottom view of the side guide device 10 (a view taken along the line IV-IV in FIG. 2).

FIG. 5 is a cross-sectional view (a cross-sectional view taken along line VV in FIG. 2) of the side guide device 10.

FIG. 6 is a plan view showing a conventional side guide device 10 ′ and the like.

FIG. 7 is a front view showing another conventional side guide device 10 ″ and the like.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Finishing rolling mill 2 Edger 2c Edger housing 3 H stand 3c ・ 3d Post 10 Side guide device 11 ・ 12 Side guide body 14 Main frame 15 Drive means 16 ・ 17 Hydraulic (fluid pressure) cylinder X Strip

Claims (5)

[Claims] 1. A side guide device attached to a finishing mill for guiding the feeding of a strip, comprising: a main frame mounted between said posts of an H-stand housing having a pair of posts and a pair of strips. A pair of side guide bodies supported by the main frame and guided and movable in the width direction of the strip; and driving means mounted on the main frame and moving the side guide bodies within a range between the paired posts. A side guide device comprising: 2. The driving means is a pair of hydraulic cylinders, the cylinders being arranged adjacent to each other in a longitudinal direction along the width direction of the strip and opposite to each other, and each moving end thereof being a side guide body. The side guide device according to claim 1, wherein the side guide device is directly connected to a part of the side guide. 3. The hydraulic cylinder according to claim 2, further comprising a sensor for detecting mutual displacement between the cylinder body and the piston rod.
The side guide device according to item 1. 4. A lower portion of the main frame is opened,
The side guide device according to claim 2 or 3, wherein the side guide device is openable, and a connection portion of the pipe and the cable in the hydraulic cylinder is provided in a lower portion of the cylinder. 5. An edger housing and the side guide device according to claim 1 attached to a post of an H-stand housing having a pair of posts with a strip interposed therebetween. A finishing mill.