JP3420574B2 - Rolled material guide device for rolling mill - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolled material guide device for a rolling mill, which is provided in a rolling mill and guides a rolled material to the vicinity of a rolling roll.

[0002]

2. Description of the Related Art A rolled material guide device of this type includes a guide member having a guide surface. The guide member is provided on the entry side of the work roll of the rolling mill and guides the material to be rolled to the vicinity of the rolling roll to help the material to be rolled into the rolling roll. In this guide device, it is necessary to keep the distance between the lower surface of the upper work roll, that is, the upper surface of the material to be rolled and the guide surface of the guide member within an appropriate range. This is because if the distance is too small, the material to be rolled collides with the outside of the guide member, and if the distance is too large, the material cannot sufficiently function as a guide. Therefore,
It is necessary to change the vertical position of the guide member every time the diameter of the rolling roll is changed by changing the rolls or the like to adjust the distance so as to satisfy the appropriate range.

Usually, the guide member is movably connected to a roll balance device that supports a support roll so that the support roll can be moved up and down through an adjusting plate. That is, the upper part of the adjusting plate is swingably pin-coupled to the hanger of the roll balance device driven up and down by a hydraulic cylinder, and one of a plurality of adjusting holes formed in the lower part of the adjusting plate and having different vertical positions. The connecting hole formed in the upper portion of the guide member is connected by a pin. The vertical position of the guide member is adjusted by selecting an adjusting hole to be connected to the connecting hole according to the diameter of the rolling roll, inserting a pin into the selected adjusting hole and the connecting hole, and connecting the adjusting plate. This is done by changing the effective length. This adjustment work is performed by an operator going to the machine side and manually inserting and removing the pin.

[0004]

As described above, since the operator manually adjusts the vertical position of the guide member as described above, it takes a lot of time and labor and the down time of the rolling mill becomes long. There's a problem. Further, since the worker goes to the machine side to perform the work, there is a safety problem.

An object of the present invention is to provide a rolled material guide device for a rolling mill which can automatically adjust the vertical position of the guide surface according to the diameter of the rolling roll.

[0006]

DISCLOSURE OF THE INVENTION The present invention relates to an elevating and lowering drive means for elevating and lowering a roll which is provided in a housing so as to be able to ascend and descend, and a guide member which is provided at least on the entrance side of the roll and which guides a material to be rolled. A guide member having a connecting hole extending along the horizontal axis and having a first guide portion provided in the vicinity of the connecting hole, and the guide member formed in the housing and receiving the guide member below a position during rolling. A swinging member that is provided in the receiving portion and the lifting drive means, that moves up and down in conjunction with a roll and is swingably supported around a horizontal axis,
A plurality of adjustment holes formed below the swing axis at intervals of different distances from the swing axis are in contact with the first guide portion, and the adjustment holes coincide with the connecting holes according to the elevation of the swing axis. A swinging member having a second guide portion that guides the connection pin, a connecting pin through which any one of the connecting hole and the plurality of adjusting holes can be inserted, and the connecting pin between the connecting hole and the plurality of adjusting holes. And a pin driving unit that is detachably driven with respect to one of the rolling members.

According to the present invention, the lifting drive means drives the roll up and down, and the rocking member provided in the lifting drive means moves up and down in conjunction with the roll to adjust the adjusting hole of the rocking member and the connecting hole of the guide member. Are connected by connecting pins. Therefore,
The elevating drive means can elevate the guide member. Further, since the swing member is swingably supported about the swing axis, and the plurality of adjustment holes of the swing member are formed below the swing axis at different distances from the swing axis. The effective length of the rocking member can be adjusted by selecting an adjusting hole that is pin-connected to the connecting hole. Further, since the second guide portion of the swing member abuts the first guide portion of the guide member and guides the adjusting hole so as to coincide with the connecting hole when the swing member moves up and down, the vertical position of the swing member. By controlling, the selected adjusting hole and the connecting hole can be accurately matched. With this, the guide member is placed on the receiving portion, the pin is pulled out, the swinging member is moved up and down, and the adjusting hole and the connecting hole selected according to the diameter of the roll are aligned with each other so that the adjusting hole and the connecting hole are aligned. If the pins are coupled, the distance between the swing axis and the connecting hole of the guide member can be automatically adjusted. Therefore, the gap between the lower surface of the roll and the lower surface of the guide member can be set within an appropriate range, and the guide function can be sufficiently exerted. Moreover, since the vertical position of the guide member can be automatically adjusted, the time required for the position adjustment is shortened as compared with the conventional manual operation.
It is possible to shorten the downtime of the rolling mill. Further, since the work on the machine side of the worker is omitted, the safety can be improved.

According to the present invention, the first and second guide portions are
The adjustment hole and the connection hole, which are farther from the swing axis, are formed to coincide with each other as the swing member rises, and the center of gravity of the swing member is opposite to the first guide portion of the guide member with respect to the vertical plane including the swing axis. It is characterized by existing on the side.

According to the present invention, since the center of gravity of the rocking member exists on the side opposite to the first guide portion of the guide member with respect to the vertical plane including the rocking axis, the center of gravity of the rocking member can be adjusted by raising the rocking member. By the action, the guide member can be angularly displaced toward the connecting hole. As a result, the adjusting hole and the connecting hole can be easily aligned with each other.

Further, according to the present invention, the first guide portion is provided on the upper portion of the guide member and includes a guide roller rotatable about a lateral axis, and the second guide portion is a guide roller below the adjusting hole. It is characterized in that it comprises a guide surface that comes into contact.

According to the present invention, since the first guide portion is composed of a rotatable roller and the second guide portion is composed of a guide surface which comes into contact with the roller, it is possible to reduce the contact resistance.
The adjustment hole of the swing member can be smoothly guided toward the connecting hole of the guide member.

According to the present invention, the housing is provided with an upper work roll and at least one support roll provided above the upper work roll, and position detecting means for detecting the vertical position of the swing member, Based on the diameter of the upper work roll and the diameter of at least one support roll provided above the upper work roll, the adjusting hole of the swinging member to be connected to the connecting hole of the guide member is set to be one of the plurality of adjusting holes. And a target position in the vertical direction of the swinging member for matching the selected adjusting hole with the connecting hole based on the distance between the selected adjusting hole and the swinging axis, and the position detecting means is obtained. In response to the output of the control means, the control means for controlling the elevating and lowering drive means so that the detected position of the swinging member becomes the determined target position.

According to the present invention, the adjusting hole to be pin-connected to the connecting hole is selected based on the diameter of the upper work roll and the diameter of the supporting roll above the upper work roll. The vertical target position of the swing member can be obtained based on the distance from the axis. Further, since the vertical position of the swinging member can be detected, it is possible to accurately control the detected position of the swinging member so as to reach the obtained target position. As a result, the selected adjusting hole and the connecting hole can be accurately matched.

Further, according to the present invention, the elevating and lowering drive means is provided on the housing and has a hydraulic cylinder having a telescopic rod which is capable of expanding and contracting in the vertical direction; The roll chock and the support roll are engaged by engaging with the roll chock of the support roll arranged at the uppermost position, which is connected to the hydraulic means capable of switching to any one of the ascending, descending and stopping states and the telescopic rod of the hydraulic cylinder. And a hanger means for supporting the swing member so as to be swingable via a bracket.

According to the present invention, the swinging member is swingably supported by the hanger means via the bracket, and the hanger means is connected to the telescopic rod of the hydraulic cylinder, and is mounted on the roll chock of the uppermost support roll. Engages to support the roll chock and the support roll so that they can be raised and lowered. As a result, the hanger means is driven up and down by the hydraulic cylinder while supporting both the support roll and the swing member, so that it is not necessary to separately provide a hydraulic cylinder for moving the swing member up and down. Therefore, the structure can be simplified and the space can be saved.

According to the present invention, the hydraulic means supplies a hydraulic pressure source and hydraulic oil from the hydraulic pressure source to a hydraulic cylinder.
A first directional switching valve having a position and a second position for causing the hydraulic oil to flow backward from the hydraulic cylinder; and hydraulic oil from the first directional switching valve that passes through the hydraulic cylinder from the hydraulic cylinder when pilot pressure is applied. And a pilot check valve that blocks the reverse flow of hydraulic oil from the hydraulic cylinder when the pilot pressure is zero, and a third check valve that supplies hydraulic oil from a hydraulic source to the pilot check valve to apply pilot pressure.
A second directional control valve having a position and a fourth position where the supply of hydraulic oil to the pilot check valve is stopped to bring the pilot pressure to zero.

According to the present invention, since the hydraulic means of the lifting drive means is provided with the pilot check valve, it is possible to pass or block the reverse flow of the hydraulic oil from the hydraulic cylinder by operating the pilot pressure. Therefore, it is possible to reliably raise and lower and stop the telescopic rod of the hydraulic cylinder with a simple structure.

Further, according to the present invention, the guide member is provided with a pin support portion composed of a pair of plate-shaped support pieces which are provided so as to face each other at intervals in the horizontal axis direction, and the pin support portion is provided with a horizontal direction. Is formed with a connecting hole extending linearly through the pair of supporting pieces in the axial direction of the rocking member, the swinging member has a plate-like shape, and the vicinity of the adjusting hole is inserted between the pair of supporting pieces. The pin drive means includes a pin drive hydraulic cylinder, the pin drive hydraulic cylinder is attached to the guide member, and the telescopic rod of the pin drive hydraulic cylinder is extendable / contractible along the horizontal axis direction. A connecting pin is connected to the tip of the telescopic rod, and the connecting hole, the connecting pin, and the telescopic rod have a common axis.

According to the present invention, since the telescopic rod of the pin driving hydraulic cylinder, the connecting hole and the connecting pin have a common axis, the adjusting hole and the connecting hole can be easily connected to each other. The pin can be inserted into and removed from the connecting hole and the adjusting hole. Further, since the connecting holes are formed in the pair of supporting pieces provided at intervals, the connecting pin can be formed by inserting the adjusting member between the pair of supporting pieces and inserting the connecting pin into the adjusting hole and the connecting hole. Both ends are supported by a pair of support pieces. This makes it possible to sufficiently support the connecting pin even if a shearing force is applied to the connecting pin, and prevent damage and deformation of the connecting pin.

According to the present invention, a long hole is formed in the swing member, and a support pin for rotatably supporting the swing member on the bracket is inserted into the long hole coaxially with the swing axis. The long hole is characterized in that it is formed elongated along the direction connecting the swing axis and any one of the plurality of adjusting holes.

According to the present invention, the support pin that supports the swing member swingably around the swing axis is inserted into the elongated hole, and the elongated hole has the swing axis and any one of the plurality of adjusting holes. Since it is formed elongated along the connecting direction, that is, the direction from the support pin to the guide member, even if the guide and the material to be rolled come into contact with each other and a force to push the guide member upward is applied, the swing member is moved upward. It can be displaced and released. This makes it possible to significantly reduce the shearing force acting on the connecting pin, and prevent the connecting pin, the swinging member, and the support pin from being damaged.

[0022]

1 is a side view showing a simplified structure of a main part of a material-to-be-rolled material guiding apparatus 1 for a rolling mill according to an embodiment of the present invention, and FIG. 2 is shown in FIG. It is a side view which simplifies and shows the composition of rolling mill 3 provided with rolled material guide device 1. The rolling mill 3 is, for example, a four-stage hot rolling mill, and hot-rolls a flat material to be rolled 4 having a rectangular cross section (hereinafter referred to as a slab) to a predetermined size. The rolling mill 3 includes a pair of first and second housings 5 and 6 as shown in FIG. 4 described later. The first and second housings 5 and 6 are
The slabs 4 are arranged so as to face each other in the width direction 9 (direction perpendicular to the paper surface of FIGS. 1 and 2) perpendicular to the rolling direction 8 of the slab 4, and are erected perpendicularly to the horizontal plane.

The first housing 5 has a first pillar portion 5a arranged on the upstream side in the rolling direction, and a second pillar portion 5b arranged on the downstream side of the first pillar portion 5a so as to face each other with a gap. Upper connection part 5c for connecting the upper ends of the first and second pillar parts 5a, 5b
And a lower connecting portion 5d that connects the lower ends of the first and second pillar portions 5a and 5b. The configuration of the second housing 6 is also the first
The structure is the same as that of the housing 5, and the corresponding parts have the same subscripts a, b, .... As a result, the first and second housings 5 and 6 are respectively formed with rectangular storage holes 10 that penetrate the first and second housings 5 and 6 in the width direction 9.

First to fourth roll chocks 11 to 14 are slidably housed in the housing holes 10 of the first and second housings 5 and 6 in this order from the top to the bottom. Cage, each 1st-4th roll chock 1
1 to 14 include an upper support roll 15 and an upper work roll 1
6, one end and the other end of the lower work roll 17 and the lower support roll 18 are rotatably mounted. Therefore, the roll chock 11 of each of the first and second housings 5 and 6 is connected to both ends of each of the rolls 15 to 18.
˜14 rotatably support each. A screw down means 20 is provided above the upper connecting portion 5c of the first housing 5. Screw down means 20
Is in contact with one of the first roll chocks 11, and during rolling, one upper support roll 15 and one upper work roll 16
Is applied to apply a pressing force to the slab 4. The second housing 6 is also provided with another screw down means having the same structure and performs the same function.

The upstream side and the downstream side of the lower work roll 17 in the rolling direction (hereinafter, abbreviated as the inlet side and the outlet side, respectively).
Each of which is provided with a feed roller 21,
Fixed tables 22 are provided on the inlet side and the outlet side of the feed roller 21. Upper and lower work rolls 16,
Fixed guide members 23 are provided on the inlet side and the outlet side of 17 in proximity to the upper and lower work rolls 16 and 17, respectively.

The material-to-be-rolled guide device 1 (hereinafter abbreviated as a guide device) is provided with an elevating and lowering drive means 25 and guide means 26 and 27 on the inlet side and the outlet side. Lifting drive means 25
Drives the upper support roll 15 and the first roll chock 11 up and down, and guides the entrance and exit sides 2
6 and 27 are supported so that they can be raised and lowered. Entry side guide means 26
Is provided on the entrance side of the upper work roll 16 and guides the slab 4 to the vicinity of the upper and lower work rolls 16 and 17 to help the slab 4 to be caught in the upper and lower work rolls 16 and 17. The delivery side guide means 27 is provided on the delivery side of the upper work roll 16 and guides the rolled slab 4 to the downstream side in the rolling direction in a flat state. Since the inlet side and outlet side guide means 26 and 27 have the same configuration, hereinafter,
Only the configuration of the exit side guide means 27 will be described to avoid duplication.

The outlet guide means 27 comprises a guide member 28 and a swing member 29. The guide member 28 is the slab 4
It is a member that comes into contact with the slab 4 and guides the slab 4 to the downstream side, and has a guide surface 30 in a lower face. The guide surface 30 is
The upper work roll 16 is formed so as to curve upward as it moves away from the upper work roll 16. On the upper part of the guide member 28,
Pin drive means 33 for driving the connecting pin 31 is provided. The pin driving means 33 connects the upper part of the guide member 28 and the lower part of the swinging member 29 by a connecting pin 31. A guide roller 34, which is a first guide portion, is provided near the pin driving means 33. The swinging member 29 is a member for adjusting the vertical position of the guide member 28, and the upper part thereof is swingably pin-coupled to the elevating drive means 25.

FIG. 3 is a side view showing a simplified structure of the lifting drive means 25 shown in FIG. 1, and FIG. 4 is a rolling mill 3 shown in FIG.
It is the front view seen from the entrance side. The lifting drive means 25 includes a hydraulic cylinder 35. The hydraulic cylinder 35 has a vertical axis 35a, and is fixed to the center position of a frame 36.
The gantry 36 is bridged between the facing surfaces of the upper connecting portions 5c and 6c of the first and second housings 5 and 6, and the bolts 38 and nuts are provided near the central portions of the respective upper connecting portions 5c and 6c in the rolling direction 8. Each of them is detachably fixed by 39. The hydraulic cylinder 35 has a telescopic rod 37 that can extend and contract in the vertical direction. A plate-like connecting arm 40 is fixed to the upper end of the telescopic rod 37. Connecting arm 40
Lies in a vertical plane 40a that includes the vertical axis 35a of the hydraulic cylinder 35 and is parallel to the rolling direction 8, and extends horizontally. The fixed position of the telescopic rod 37 and the connecting arm 40 is the central position in the longitudinal direction of the connecting arm 40. The plate-shaped first and second connection members 4 are provided on both ends of the connecting arm 40.
1, 42 are provided.

The first and second connecting members 41, 42 pass through both ends of the connecting arm 40 and are parallel to each other in the width direction 9.
It exists in each of the two vertical planes, and extends vertically downward. The upper ends of the first and second connecting members 41 and 42 are fixed to both ends of the connecting arm 40, respectively. First and second attachment members 43 and 44 are fixed near the lower ends of the first and second connection members 41 and 42. The first mounting member 43 includes a pair of plate-shaped mounting pieces 43a and 43b. The pair of mounting pieces 43a and 43b are the first connecting member 4
The first connecting member 41 is joined to one surface and the other surface of the first connecting member 41, respectively, and extends vertically downward along the first connecting member 41 so as to project downward from the lower end portion of the first connecting member 41. As a result, a gap corresponding to the plate thickness of the first connecting member 41 is formed in the plate-thickness direction, that is, the rolling direction 8 in the downward projecting portion of the first attachment member 43. The second mounting member 44 includes a pair of plate-shaped mounting pieces 44a,
44b. The structure of the second mounting member 44 is the same as that of the first mounting member 43.

The first and second mounting members 43, 44 include
The first and second hanger members 45, 46 are attached.
The first and second hanger members 45, 46 are mountain-shaped plate-like members formed so as to taper upward and are present in the same vertical plane as the first and second connection members 41, 42. To do. That is, the first hanger member 45 is the first
Also, the second hanger member 46 is provided along the side surface of each of the first pillar portions 5a and 6a of the second housings 5 and 6 that faces the respective storage holes 10, and the second hanger member 46 is the second of the first and second housings 5 and 6.
The pillar portions 5b and 6b are provided along the side surfaces of the storage holes 10 facing the storage holes 10.

More specifically, the first hanger member 4
The upper part of 5 is arranged at the center part in the width direction of the space between the first column parts 5a, 6a of the first and second housings 5, 6.
The lower part of the first hanger member 45 is a first housing 5 of the first housing 5.
It is arranged so as to extend over the entire width in the width direction from the widthwise outer end of the pillar 5a to the widthwise outer end of the first pillar 6a of the second housing 6. Second hanger member 46
Similarly, the upper part and the lower part of the are also arranged to face the first hanger member 45. First and second hanger members 45, 4
The upper portion of 6 is inserted into the gap between the downward protrusions of the first and second attachment members 43 and 44, and is rolled by the pin 47 in the rolling direction 8.
It is pin-connected so as to be angularly displaceable around an axis extending to the.

First and second engaging pieces 49, 50 are attached to the lower surfaces of the first and second hanger members 45, 46 on the surfaces of the first and second housings 5, 6 facing the respective storage holes 10. ing. First and second engaging pieces 49, 50
Engages with the first and second engagement recesses 51 and 52 formed in the first roll chock 11 on one side, respectively, and similarly engages with the first roll chock 11 on the other side. The connecting arm 40, first and second connecting members 41, 42, first and second mounting members 43, 44,
The first and second hanger members 45 and 46 and the first and second engagement pieces 49 and 50 form hanger means 53.

The first engaging piece 4 below the first hanger member 45.
A pair of brackets 54 and a pair of sliding pieces 55 are provided on the surface opposite to 9. A pair of brackets 54
Are respectively arranged at positions displaced inward from the inner ends in the width direction of the first pillar portion 5a of the first housing 5 and the first pillar portion 5b of the second housing 6, and are arranged at intervals. The pair of sliding pieces 55 are arranged at positions facing the first pillar portion 5a of the first housing 5 and the first pillar portion 6a of the second housing 6, respectively. The pair of sliding pieces 55 includes the first pillar portion 5
The first hanger member 45 is smoothly moved up and down by making contact with a and 6a, respectively. Similarly to the first hanger member 45, the second hanger member 46 also has a pair of brackets 5 at corresponding positions.
6 and a pair of sliding members 57 (see FIG. 5) are provided.

FIG. 5 is a plan view showing a simplified structure near the bracket 56 shown in FIG. The bracket 56 includes a pair of holding pieces 59. The pair of holding pieces 59 are fixed to the base plate 60 at the base end portions thereof with a space in the width direction 9, and the base plate 60 is attached to and detached from the second hanger member 46 by bolts 61. Fixed as possible. A swing member 29 is inserted into the free ends of the pair of holding pieces 59, and the pair of holding pieces 59 and the swing member 29 are swingable by a support pin 63 about an axis 64 extending in the width direction 8. Pin-coupled. Hereinafter, this axis will be referred to as the swing axis 64. A pair of holding pieces 59
Are reinforced with respect to the substrate 60 by the ribs 65. Of the pair of holding pieces 59, the second of the first housing 5
A sliding member 66 is attached to the holding piece 59 near the column portion 5b. The sliding member 66 is the second housing of the first housing 5.
The bracket 56 is smoothly moved up and down by coming into contact with the receiving piece 67 attached to the column portion 5b. The second hanger member 46 includes
A sliding member 57 is attached. The sliding member 57 comes into contact with the second column portion 5b of the first housing 5 to smoothly move the second hanger member 46 up and down.

FIG. 6 is a front view showing a simplified structure near the telescopic rod 37 of the hydraulic cylinder 35 shown in FIG. A cutout groove 69 is formed at the upper end of the telescopic rod 37, and the connecting arm 40 is inserted into the cutout groove 69. The telescopic rod 37 and the connecting arm 40 have a pin 70.
Are joined by. Position detecting means 71 is provided on the frame 36 in proximity to the hydraulic cylinder 35.
The position detecting means 71 is a position detector that detects the vertical position of the telescopic rod 37, and includes a cylinder 73 and a position detecting rod 74. The cylinder 73 is the hydraulic cylinder 35.
It has an axis line 73a parallel to the vertical axis line 35a and is fixed on the pedestal 36 via a first mounting piece 75. The position detection rod 74 is vertically inserted into the cylinder 73, and the upper end of the position detection rod 74 is fixed to the telescopic rod 37 via the second attachment piece 76. Since the position detection rod 74 moves up and down when the telescopic rod 37 expands and contracts, the vertical position of the telescopic rod 37 can be detected by detecting the relative position of the position detection rod 74 with respect to the fixed cylinder 73. In FIG. 6, the lower limit position 77 and the upper limit position 78 of the telescopic rod 37 are shown by imaginary lines.

Referring to FIGS. 3 to 6, the hydraulic cylinder 35
When the telescopic rod 37 is expanded and contracted by driving the connecting arm 4,
0 goes up and down. Thereby, the first and second connecting members 41, 42, the first and second mounting members 43, 44, the first
Since the second hanger members 45 and 46 move up and down,
And the first roll chock 11 and the upper support roll 15 engaged with the second engagement pieces 49, 50 are moved up and down, and the brackets 54, 56 attached to the first and second hanger members 45, 46 are moved up and down. To do. A portion on the right side of the center line in FIG. 3 shows a state in which the telescopic rod 37 of the hydraulic cylinder 35 is raised to the upper limit position 78, and in FIG. 4, the first connecting member 41 and the first hanger member 45. The upper limit position of is shown by a virtual line.

FIG. 7 is a simplified front view showing the structure of the rocking member 29 shown in FIG. 1, and FIG. 8 is a sectional plane VI of FIG.
It is sectional drawing seen from II-VIII. Swing member 29
Is a plate-shaped member having a complicated shape, and is supported by the brackets 54 and 56 via a support pin 63 so as to be swingable around a swing axis 64. The swing member 29 includes
A long hole 80, a plurality of adjustment holes 81, and a guide surface 83 that is a second guide portion are formed. The long hole 80 is the swing member 29.
And has a swing axis 64. The support pin 63 is inserted through the long hole 80.

The plurality of adjusting holes 81 are formed in the lower portion of the swing member 29 at different distances from the swing axis 64. In the present embodiment, the plurality of adjustment holes 81 are the first adjustment hole 81a having the distance Y1 that is the farthest from the swing axis 64 and the second adjustment hole having the distance Y2 that is the second farthest from the swing axis 64. 81b and a third adjusting hole 81c having a distance Y3 closest to the swing axis 64. The elongated hole 80 is elongated along a straight line 84 connecting the swing axis 64 and the second adjusting hole 81b.

The direction parallel to the straight line 84 is defined as the y direction,
The direction perpendicular to the y direction is defined as the x direction, and the swing axis 64 and the first
The distances between the third adjustment holes 81a, 81b and 81c in the y direction are Y4, Y2 and Y5, respectively, and x between the straight line 84 and the first and third adjustment holes 81a and 81c.
When the distances in the directions are X1 and X2, the linear distances Y1 and Y3 between the swing axis 64 and the first and third adjusting holes 81a and 81c are expressed by the equations (1) and (2). As a result, the positions of the long hole 80 and the first to third adjusting holes 81a, 81b, 81c can be uniquely determined. Y1 = √ (Y4 ² + X1 ² ) (1) Y3 = √ (Y5 ² + X2 ² ) (2)

The guide surface 83 is formed on the lower end surface of the swing member 29. In the present embodiment, the guide surface 83 is composed of continuously flat first to third guide surfaces 83a to 83c. The first guide surface 83a extends from the position A below the first adjustment hole 81a in the y direction with respect to the first adjustment hole 81a.
It extends in the x direction on the side opposite to 1b. Second guide surface 83b
Is formed below the second adjustment hole 81b in the y direction,
It is continuous with the first guide surface 83a at the position A, and extends obliquely upward with respect to the first guide surface 83a from the position A toward the second adjustment hole 81b in the x direction. The third guide surface 83c is formed below the third adjustment hole 81c in the y direction, is continuous with the second guide surface 83b at a position B apart from the position A in the x direction by a distance X3, and extends from the position B to the first adjustment hole. As it extends toward the 81c side in the x direction, it extends obliquely upward with respect to the first guide surface 83a. Angle θ formed by the second and third guide surfaces 83b, 83c and the first guide surface 83a
1, θ2 and x-direction distance X3 between position A and position B
Then, the distance X4 from the position B to the end of the swinging member 29 on the side of the third adjustment hole 81c is set as described later. The center of gravity G of the oscillating member 29 is the second and third adjusting holes 81b, with respect to the straight line 85 connecting the oscillating axis 64 and the first adjusting hole 81a.
It is set on the side opposite to 81c.

FIG. 9 is a front view of the guide member 28 of the outlet guide means 27 shown in FIG. 1, which is shown in simplified form, as seen from the entrance side, and FIG. 10 is taken from the section line XX of FIG. FIG. 11 is a plan cross-sectional view, and FIG. 11 is an enlarged view of a portion S1 of FIG. The guide member 28 is a welded structure made of a steel plate, and has a generally rectangular parallelepiped overall shape. At both ends of the guide member 28 in the width direction 9, protrusions 87 that protrude outward in the width direction and extend in the vertical direction are attached. The ridge 87 has a rectangular cross section perpendicular to the axis, and sliding pieces 88 are detachably attached to a pair of side surfaces extending in parallel to the width direction 9. First and second housings 5,
Fitting recesses 89 extending in the up-down direction are formed respectively on the side surfaces of the second pillar portions 5b, 6b of the six facing each other, and receiving portions 90 are formed under the fitting recesses 89, respectively. .

The fitting recess 89 has a rectangular cross section perpendicular to the axis, and a sliding piece 91 is detachably attached to its inner surface. The ridge 87 of the guide member 28 is fitted into the fitting recess 89.
The sliding piece 88 and the sliding piece 91 are fitted in the inside and slide in the vertical direction in a state of being in contact with each other. Sliding displacement of the guide member 28 downward is possible until the ridge 87 contacts the receiving portion 90. The receiving portion 90 supports the guide member 28 below the position at the time of rolling. A sliding piece 92 is further detachably attached near the protrusion 87 of the guide member 28.
The sliding piece 92 is the second piece of the first and second housings 5, 6.
The pillars 5b and 6b slide in the vertical direction in contact with the mutually facing side surfaces.

Since the projection 87, the fitting recess 89 and the sliding pieces 88, 91 and 92 are provided in this manner, the guide member 28 can be smoothly moved up and down along the first and second housings 5 and 6. Can be made. Further, since the receiving portion 90 is formed, the guide member 28 can be placed on the receiving portion 90. A water cooling nozzle 93 is attached to the guide member 28 to cool the upper work roll 16 and the upper support roll 15 during hot rolling.

FIG. 12 is a sectional line XII-XII of FIG.
It is sectional drawing seen from. With reference to FIG. 12, the configuration of the pin driving means 33 and the upper portion of the guide member 28 shown in FIG. 1 will be described. First and second pin support portions 95 and 96 are provided near the upper and lower ends of the guide member 28 in the width direction, respectively. The first pin support portion 95 has a width direction 9
It is composed of a pair of plate-shaped support pieces 97, 98 provided to face each other with a space therebetween, and the pair of support pieces 97, 98 has a connecting hole 99 penetrating each support piece 97, 98 and extending linearly. Has been formed. The connecting hole 99 is the lateral axis 9 in the width direction 9.
Bearing metal 100 is mounted on the inner peripheral surface thereof. The distance between the pair of support pieces 97, 98 is set to be slightly larger than the plate thickness of the swing member 29. The second pin support portion 96 has the same configuration as the first pin support portion 95, and the same reference numerals are given to corresponding portions.

The pin driving means 33 comprises a pair of first and second pin driving hydraulic cylinders 101 and 102. The first pin driving hydraulic cylinder 101 has an axis extending on the extension of the axis of the connecting hole 99, and is detachably fixed to the upper portion of the guide member 28 via a mounting base 103.
The axis of the connecting hole 99 and the hydraulic cylinder 101 for driving the first pin
The axis line of 1 exists in a straight line, and hence is hereinafter referred to as a common axis line 104. The first pin driving hydraulic cylinder 101 is
It has a telescopic rod 105 that can expand and contract along the common axis 104, and the connecting pin 31 is provided at the tip of the telescopic rod 105.
Are combined. The connecting pin 31 has an outer diameter slightly smaller than the inner diameters of the connecting hole 99 and the adjusting hole 81, and has the same axis as the common axis 104.

The second pin driving hydraulic cylinder 102 has the same structure as the first pin driving hydraulic cylinder 101,
Corresponding parts are designated by the same reference numerals. The axis of the second pin driving hydraulic cylinder 102 is located on the extension of the common axis 104, and another connecting pin 31 is connected to the tip of the telescopic rod 37.

As described above, since the first and second pin driving hydraulic cylinders 101 and 102, the one and the other connecting holes 99, and the one and the other connecting pin 31 are present on the same common axis 104, The swinging member 29 is inserted between the pair of support pieces 97, 98 to connect the connecting hole 99 and the first to third portions.
The first and second pin driving hydraulic cylinders 1 are aligned with any one of the adjusting holes 81a to 81c.
When 01 and 102 are driven, the one and the other connecting pins 31 can be easily moved in and out of the one and the other connecting holes 99 and the adjusting hole 81. Therefore, the rocking member 29 and the guide member 28 can be connected or disconnected quickly and reliably.
Further, since both ends of the connecting pin 31 are supported by the pair of supporting pieces 97 and 98, it becomes possible to support the connecting pin 31 with sufficient strength even if a shearing force acts on the connecting pin 31. It is possible to prevent damage and deformation of 31.

FIG. 13 is a sectional line XIII-XI of FIG.
FIG. 14 is a sectional view taken along line II, and FIG. 14 is a sectional view taken along line XIV-XIV in FIG. The configuration of the guide roller 34 shown in FIG. 1 and its surroundings will be described with reference to FIGS. 13 and 14. FIG. 13 shows a state in which the connecting pin 31 is inserted through the connecting hole 99 of the guide member 28 and the third adjusting hole 81c of the swinging member 29. The axis of the connecting hole 99, that is, the common axis 104 exists in the vertical plane 107 including the swing axis 64 in parallel with the swing axis 64. A guide roller 34 is provided near the connecting hole 99.

The guide roller 34 is spaced from the vertical plane 107 by a distance L1 on the side opposite to the first and second adjusting holes 81a and 81b with respect to the vertical plane 107, and the connecting hole 99.
It is arranged at a distance L2 below the horizontal plane 108 including the axis 104 of. Axis 3 of the guide roller 34
4a is parallel to the vertical plane 107 and parallel to the swing axis 64 and the common axis 104. The guide roller 34 is
The fixed shaft 109 is coaxially and rotatably mounted on the outer peripheral surface of the fixed shaft 109 via a bearing metal 110.
The pin support portion 95 is fixed across the pair of support pieces 97, 98. The guide roller 34 is a pair of support pieces 9.
The rocking member 29 is guided by coming into contact with the guide surface 83 of the rocking member 29 inserted between the members 7 and 98.

More specifically, the third adjusting hole 81c.
When the next second adjusting hole 81b and the connecting hole 99 are made to match from the state of FIG.
The connecting pin 31 is extracted and the swinging member 29 and the guide member 2
8 is released and the hydraulic cylinder 35 is driven to raise the swinging member 29, the center of gravity of the swinging member 29 exists on the side opposite to the guide roller 34 with respect to the vertical plane 107, so that the center of gravity is adjusted. A propulsive force that angularly displaces the second adjustment hole 81 of the swing member 29 toward the connection hole 99 is generated by the heart effect. Thereby, the guide roller 34 can guide the swinging member 29 in a state of being in contact with the guide surface 83 of the swinging member 29. Therefore, by controlling the amount of rise of the swinging member 29, the second adjusting hole 81b and the connecting hole 99 can be accurately aligned. Also, the first adjusting hole 81a and the connecting hole 99 can be made to coincide with each other.

On the other hand, the first adjusting hole 81a and the connecting hole 9
The second adjusting hole 81b in the opposite direction from the state in which
When the rocking member 29 is lowered when the rocking member 29 is connected to the connecting hole 99, the guide surface 83 of the rocking member 29 is moved to the first adjusting hole 8.
Since the guide roller 34 is inclined obliquely upward from 1a toward the second and third adjusting holes 81b and 81c, the guide roller 34 moves the swinging member 29 in a state of being in contact with the guide surface 83 of the swinging member 29 by the action of gravity. I can guide you. Therefore, by controlling the amount of lowering of the swinging member 29, the second adjusting hole 81b and the connecting hole 99 can be accurately aligned. Also, the third adjusting hole 81c and the connecting hole 99 can be made to coincide with each other.

The distance X of the guide surface 83 of the swing member 29
3, X4 and angles θ1 and θ2, and the distances L1 and L2 of the guide roller 34 can be guided in a state where the guide roller 34 is in contact with the guide surface 83 of the swing member 29 as the swing member 29 moves up and down. In this way, the adjustment hole 81 can be accurately aligned with the connecting hole 99.

FIG. 15 shows the diameters D1 and D2 of the upper support roll 15 and the upper work roll 16, the distance Y from the swing axis 64 to the adjusting hole 81, and the lower surface of the guide member 28 to the lower surface of the upper work roll 16. FIG. 6 is a diagram for explaining a relationship with a distance δ of. The upper support roll 15 and the upper work roll 16 have diameters D1 and D2, respectively, and the swing axis 6
The distances from 4 to the first to third adjusting holes 81a, 81b, 81c are Y1, Y2, Y3 (referred to as Y when the distances are collectively referred to), and the guide surface 3 of the guide member 28 is used.
The distance from the lower surface of 0 to the lower surface of the upper work roll 16 is δ
And the swing axis 64 from the upper surface of the first roll chock 11
To the guide member 28 from the connecting hole 99.
The distance from the upper surface of the first roll chock 11 to the lower surface of the guide surface 30 of the upper roll 15 is set to A1.
If the distance to a is C1, the first roll chock 11
The distance from the upper surface of the upper work roll 16 to the lower surface of the upper work roll 16 can be obtained by two methods, and the expression (3) is established.

By modifying the equation (3), the equation (4) is obtained. Since the distances B1, A1 and C1 are eigenvalues determined by the equipment, the third term on the right side of the equation (4) is set to a constant k (= B1 + A1-C1), and the upper support roll 1
5 radius (D1 / 2) and upper work roll 16 diameter D2
When the sum of and is the roll diameter corresponding value T (= D / 2 + D2), the equation (5) is obtained. C1 + (D1 / 2) + D2 = B1 + Y + A1 + δ (3) (D1 / 2) + D2 = Y + δ + (B1 + A1-C1) (4) T = Y + δ + k (5)

FIG. 16 shows the roll diameter corresponding value T, the distance Y from the swing axis 64 to the adjusting hole 81, and the distance δ from the lower surface of the guide surface 30 of the guide member 28 to the lower surface of the upper work roll 16. It is a graph which shows a relationship. Guide member 28
The distance δ from the lower surface of the guide surface 30 to the lower surface of the upper work roll 16 needs to be within the predetermined appropriate range as described above in order to sufficiently fulfill the function as the guide device. That is, it is necessary to fall within the range from the lower limit value δ1 to the upper limit value δ2.

When the connecting hole 99 and the third adjusting hole 81c are connected, the distance Y becomes a constant value Y3. Therefore, as the roll diameter corresponding value T increases from T1 to T2, the distance δ becomes The amount of increase in the roll diameter corresponding value T (= T2-T1) increases from δ1 to δ2, and the increase in the distance δ (= δ2
It becomes equal to −δ1). When the distance δ reaches the upper limit value δ2, the third adjusting hole 81c cannot cope with the increase of the roll diameter corresponding value T, so that the adjusting hole 8 connected to the connecting hole 99.
1 is switched to the second adjustment hole 81b. by this,
Since the distance Y becomes a constant value Y2 which is larger than Y3,
It becomes possible to cope with an increase in the roll diameter corresponding value T. Also distance Y
If the amount of increase (= Y2−Y3) is equal to the increase of the roll diameter corresponding value T and the increase of the distance δ, the distance δ corresponding to the roll diameter corresponding value T2 after switching to the second adjusting hole 81b. Value becomes δ1, so roll diameter corresponding value T
The continuity of can be secured.

Also in the second adjusting hole 81b, the relationship between the roll diameter corresponding value T and the distance δ is the same as in the case of the third adjusting hole 81c, and also in the first adjusting hole 81a. Therefore, the relationship between the roll diameter corresponding value T and the distance δ is stepped up or down every time the adjustment hole 81 is switched while maintaining a one-to-one direct proportional relationship, and changes into a sawtooth shape as shown in FIG. .

Further, from FIG. 16, according to the roll diameter corresponding value T, the distance Y, so that the distance δ falls within an appropriate range,
That is, the adjustment hole 81 to be selected can be easily set. That is, when the roll diameter corresponding value T is T1 or more and T2
In the following cases, the third adjusting hole 81c is used, and when the roll diameter corresponding value T exceeds T2 and is T3 or less, the second adjusting hole 81b is used, and when the roll diameter corresponding value T is above T3 and T4 or less. The first adjustment hole 81a is used.

The lifting drive means 25 further includes hydraulic means 113. The hydraulic means 113 supplies the hydraulic oil to the hydraulic cylinder 35, and switches the telescopic rod 37 of the hydraulic cylinder 35 to any one of the ascending, descending and stopping states.

FIG. 17 is a system diagram showing a simplified structure of the hydraulic means 113. The hydraulic means 113 includes a hydraulic source 114 such as a hydraulic pump and the first and second directional control valves 11.
5,116, pilot check valve 117 and relief valve 1
24 and. First and second directional control valves 115, 1
16 are provided at intermediate positions of the first and second pipelines 118 and 119 connecting the hydraulic pressure source 114 and the pilot check valve 117, respectively, and switch the direction of the hydraulic oil. The pilot check valve 117 is connected to the hydraulic cylinder 35 via the third pipeline 120, and is connected to the first and second directional control valves 11 and 11.
5, 116 further include fourth and fifth pipelines 121, 122.
It is connected to the tank 123 via.

The relief valve 124 is provided at an intermediate position of the sixth pipeline 125 connecting the third pipeline 120 and the tank 123, and when the supply pressure of hydraulic oil rises excessively,
The pipe 125 is released to return the hydraulic oil to the tank 123. Further, the pilot check valve 117 is arranged above the first and second direction switching valves 115 and 116, the hydraulic cylinder 35 is arranged above the pilot check valve 117, and the check valve 124, The first and second directional control valves 115, 116 are arranged above the tank 123.

The first directional control valve 115 includes the first and second
It has positions 115a, 115b. First position 115a
Supplies the hydraulic oil from the hydraulic source 114 to the pilot check valve 11
7, the second position 115b is a position where the hydraulic oil that flows back from the hydraulic cylinder 35 through the pilot check valve 117 is returned to the tank 123 through the fourth pipe 121. . Second directional control valve 11
6 has third and fourth positions 116a, 116b. The third position 116a is a position where hydraulic oil from the hydraulic power source 114 is supplied to the pilot check valve 117 as pilot pressure, and the fourth position 116b causes the hydraulic oil supplied as pilot pressure to flow backward and the fifth pipeline It is a position where it is returned to the tank 123 via 122. The positions of the first and second directional control valves 115, 116 are switched by solenoids, respectively.

The telescopic rod 37 of the hydraulic cylinder 35 is raised, lowered, and stopped as follows. When raising the telescopic rod 37, as shown in Table 1, the first
The direction switching valve 115 is set to the first position 115a and the second position
The direction switching valve 116 is set to the third position 116a. As a result, the hydraulic pressure source 114 and the pilot check valve 117 communicate with each other, the pilot pressure is applied to the pilot check valve 117, and the pilot check valve 117 is opened. It is supplied to the hydraulic cylinder 35 via the one-way switching valve 115 and the pilot check valve 117 to raise the telescopic rod 37.

[0064]

[Table 1]

When the telescopic rod 37 is lowered, as shown in Table 1, the first directional control valve 115 is moved to the second position 115.
b, the second directional control valve 116 is set to the third position 116.
is set to a. As a result, the pilot check valve 11
7 and the tank 123 are communicated with each other, and the pilot check valve 117 is opened, so that the hydraulic oil flows back from the hydraulic cylinder 35 through the pilot check valve 117 and the first direction switching valve 115 and is returned to the tank 123. Be done. Therefore, the telescopic rod 37 descends due to its own weight.

When the telescopic rod 37 is stopped, as shown in Table 1, the first directional control valve 115 is set to the second position and the second directional control valve 116 is set to the fourth position.
As a result, the pilot check valve 11 from the hydraulic power source 114
7 is stopped, the pilot pressure to the pilot check valve 117 becomes zero, and the pilot check valve 117 is closed. Therefore, the hydraulic cylinder 35
The reverse flow of hydraulic oil from is blocked, and the telescopic rod 37 stops.

As described above, since the hydraulic means 113 is equipped with the pilot check valve 117, the telescopic rod 37 of the hydraulic cylinder 35 can be reliably raised and lowered and stopped with a simple structure. . Therefore, the swinging member 29 can be accurately moved up and down to a desired vertical position and stopped, and the communication hole 99 and the adjustment hole 81 can be accurately aligned with each other.

As described above, in the present embodiment, the first
Roll chock 11, upper support roll 15, swing member 29
Since the guide member 28 is engaged with or connected to the hanger means 53 of the elevating and lowering drive means 25, the elevating and lowering drive is integrally performed by one hydraulic cylinder 35. Therefore, it is not necessary to separately provide a hydraulic cylinder for moving up and down the swinging member 29 and the guide member 28, and the configuration can be simplified and space can be saved. The long hole 80 formed in the swing member 29 is in the direction connecting the swing axis 64 and the second adjustment hole 81b, that is, the guide member 28.
Since the guide member 28 and the slab 4 are in contact with each other and a force for pushing the guide member 28 upward acts on the guide surface 30, the swinging member 29 is displaced upward and released. be able to. by this,
The shearing force acting on the connecting pin 31 can be significantly reduced, and the connecting pin 31, the swinging member 29, and the support pin 63 can be prevented from being damaged.

FIG. 18 is a block diagram showing the electrical construction of the guide device 1 shown in FIG. The guide device 1 includes a processing circuit 127 which is a control means. The input unit 128 and the position detection unit 71 are connected to the processing circuit 127 realized by a microcomputer or the like. The input unit 128 is realized by a keyboard or the like, and the upper support roll 15 is input by the operator every time the rolls are recombined.
And the diameter of the upper work roll 16 is sent to the processing circuit 127. The position detecting means 71 detects the vertical position of the telescopic rod 37 of the hydraulic cylinder 35 and sends it to the processing circuit 127.

The processing circuit 127 responds to the output of the input means and adjusts the adjusting hole 81 of the swinging member 29 to be connected to the connecting hole 99 of the guide member 28 based on the diameters of the upper support roll 15 and the upper work roll 16. Is selected from among a plurality of adjustment holes, a vertical target position of the rocking member 29 for matching the selected adjustment hole 81 and the connection hole 99 with each other is obtained, and in response to the output of the position detection means 71, Elevating and lowering drive means 25 so that the detected position of the swinging member 29 becomes the target position thus obtained.
The first and second directional control valves 115 of the hydraulic means 113 of
The drive control of 116 is carried out.

FIG. 19 is a flow chart for explaining a method of switching the vertical position of the guide member 28. At step a1, the upper and lower work rolls 16 and 17 are extracted. The vertical position switching of the guide member 28 is also performed when the upper and lower work rolls 16 and 17 are replaced. In step a2, the guide member 28 is lowered to the receiving portion 90 formed in the first and second housings 5 and 6 and placed on the receiving portion 90. Guide member 28
The descending amount of is detected by the position detecting means 71. This descending amount depends on the adjusting hole 81 connected to the connecting hole 99. In step a3, the connecting pin 31 is pulled out by the pin driving hydraulic cylinder 33. This releases the connection between the swing member 29 and the guide member 28. At step a4, the vertical position of the swing member 29 is adjusted. This adjustment is performed by the processing circuit 127 as follows.

FIG. 20 is a flow chart for explaining the position adjusting operation of the processing circuit 127. Step b1
Then, the diameters D1 and D2 of the upper support roll 15 and the upper work roll 16 are input. The diameter D1 of the upper work roll 16 is the diameter of the upper work roll that is newly rearranged. In step b2, the adjusting hole 81 to be connected to the connecting hole 99 is selected from the first to third adjusting holes 81a to 81c. In this selection processing, a roll diameter corresponding value T (= D1 / 2 + D2) is obtained from the input diameters D1 and D2 of the upper support roll 15 and the upper work roll 16, and the distance corresponding to the obtained roll diameter corresponding value T is obtained. This is done by setting Y based on FIG.

At step b3, the vertical target position of the swing member 29 is set based on the distance Y of the selected adjustment hole, that is, the distance from the swing axis 64 to the selected adjustment hole. At step b4, the swinging member 29 is moved up and down. This processing is performed by controlling the first and second directional control valves 115 and 116 as described above, and the swinging member 29 is guided by the guide roller 34 to move up and down.

In step b5, the vertical position of the swing member 29 is detected, and in step b6, it is determined whether the detected position and the target position match. If this determination is negative, the process returns to step b4 to continue the process of raising and lowering the swinging member 29, and if affirmative, the process proceeds to step b7 and the raising and lowering of the swinging member 29 is stopped. As a result, the selected adjusting hole 81 and the connecting hole 99 of the swinging member 29 are selected.
And can be automatically matched with high precision.

Referring again to FIG. 19, after the position adjustment of the swinging member 29 in step a4 is completed, the process proceeds to step a5. In step a5, the connecting pin 31 is inserted into the connecting hole 99 and the selected adjusting hole 81. As a result, the swing member 29 and the guide member 28 are connected. In step a6, the guide member 28 is raised, and in step a7, the upper and lower work rolls 16 and 17 are incorporated, and the vertical position switching of the guide member 28 and the rearrangement of the upper and lower work rolls 16 and 17 are completed.

As described above, since the adjustment hole 81 and the connection hole 99 are automatically aligned, the time required for the position adjustment is shortened as compared with the conventional manual operation, and the down time of the rolling mill 3 is shortened. be able to. Further, since the work on the machine side of the worker can be omitted, the safety can be improved. Further, by appropriately selecting the adjusting hole 81 connected to the connecting hole 99, the effective length of the swinging member 29 can be adjusted, so that the lower surface of the guide member 28 and the upper work roll can be reliably made with a simple configuration. It is possible to keep the distance δ between the lower surface of 16 and the lower surface within an appropriate range.

As described above, in the present embodiment, the elevating and lowering drive means 25 is configured to integrally elevate and lower the first roll chock 11, the upper support roll 15, the swinging member 29 and the guide member 28. Elevating and lowering drive means for vertically moving the swinging member and the guide member 28 may be separately provided. Further, the hydraulic means 113 and the pin drive means 33.
The configuration of is not limited to such a configuration, and may be another configuration. Further, the guide member 28 is
Although the upper work roll 16 is installed on both the inlet side and the outlet side, it may be configured to be installed only on the inlet side. The first guide portion is composed of the guide roller 34, and the second
Although the guide portion is configured to include the guide surface 83 that contacts the guide roller 34, other configurations may be used. Although the guide device 1 is installed in the four-high rolling mill 3, it may be installed in another type of rolling mill, for example, a six-high rolling mill.

[0078]

As described above, according to the present invention as set forth in claim 1, since the vertical position adjustment of the guide member can be automatically performed, the time required for the position adjustment is longer than that of the conventional manual adjustment. As a result, the downtime of the rolling mill can be shortened. Further, since the work on the machine side of the worker is omitted, the safety can be improved.

According to the second aspect of the present invention, since the center of gravity of the rocking member exists on the side opposite to the first guide portion of the guide member with respect to the vertical plane including the rocking axis, the rocking member is raised. Then, the guide member can be angularly displaced toward the connecting hole by the centering effect of the center of gravity. As a result, the adjusting hole and the connecting hole can be easily aligned with each other.

According to the present invention as defined in claim 3, the first
Since the guide part is composed of a rotatable roller and the second guide part is composed of a guide surface that comes into contact with the roller, it is possible to reduce contact resistance, and the adjusting hole of the swinging member is smoothly connected to the connecting hole of the guide member. You can guide to.

According to the present invention as defined in claim 4, the adjusting hole to be pin-connected with the connecting hole is selected based on the diameter of the upper work roll and the diameter of the supporting roll above it. The vertical target position of the rocking member can be obtained based on the distance from the rocking axis of the adjusting hole. Further, since the vertical position of the swinging member can be detected, it is possible to accurately control the detected position of the swinging member so as to reach the obtained target position. As a result, the selected adjusting hole and the connecting hole can be accurately matched.

According to the fifth aspect of the present invention, since the hanger means is driven up and down by the hydraulic cylinder while supporting both the support roll and the swing member, the hydraulic cylinder for raising and lowering the swing member is used. It need not be provided separately. Therefore, the structure can be simplified and the space can be saved.

According to the sixth aspect of the present invention, since the hydraulic means of the lifting drive means is provided with the pilot check valve, the reverse flow of the hydraulic oil from the hydraulic cylinder is passed or passed by operating the pilot pressure. Can be stopped. Therefore, it is possible to reliably switch the telescopic rod of the hydraulic cylinder up, down, and stop with a simple configuration.

According to the present invention of claim 7, since both ends of the connecting pin are supported by the pair of supporting pieces, the connecting pin can be sufficiently supported even if a shearing force acts on the connecting pin. Therefore, damage and deformation of the connecting pin can be prevented.

According to the present invention of claim 8, a support pin for supporting the swinging member so as to be swingable about the swing axis is inserted into the elongated hole, and the elongated hole is provided with the swing axis and a plurality of adjusting holes. Since it is formed in a slender shape along the direction connecting with any one of them, that is, in the direction from the support pin to the guide member, even if the guide and the material to be rolled contact each other and a force pushing upward on the guide member acts. The oscillating member can be displaced upward so that it can escape. This makes it possible to significantly reduce the shearing force acting on the connecting pin, and prevent the connecting pin, the swinging member, and the support pin from being damaged.

[Brief description of drawings]

FIG. 1 is a side view showing a simplified configuration of a main part of a rolled material guide device 1 of a rolling mill according to an embodiment of the present invention.

FIG. 2 is a side view showing a simplified configuration of a rolling mill 3 including the material-to-be-rolled guide device 1 shown in FIG.

FIG. 3 is a side view showing a simplified configuration of a lifting drive means 25 shown in FIG.

FIG. 4 is a front view of the rolling mill 3 of FIG. 3 as seen from the entrance side.

5 is a plan view showing a simplified configuration around a bracket 56 shown in FIG. 3. FIG.

6 is a telescopic rod 37 of the hydraulic cylinder 35 shown in FIG.
It is a front view which shows the structure of the vicinity.

FIG. 7 is a front view showing a simplified configuration of a swinging member 29 shown in FIG.

8 is a cross-sectional view taken along the section line VIII-VIII in FIG. 7.

FIG. 9 is a guide member 2 of the outlet guide means 27 shown in FIG.
It is the front view seen from the entrance side which simplifies and shows the composition of No. 8.

10 is a plan sectional view taken along the section line XX of FIG.

11 is an enlarged view of a portion S1 of FIG.

FIG. 12 is a sectional view taken along the section line XII-XII in FIG.

13 is a cross-sectional view taken along the section line XIII-XIII in FIG.

14 is a cross-sectional view taken along the section line XIV-XIV in FIG.

FIG. 15 is a top support roll 15 and a top work roll 16.
Diameters D1 and D2, the distance Y from the swing axis 64 to the adjusting hole 81, and from the lower surface of the guide member 28 to the upper work roll 1
6 is a diagram for explaining the relationship with the distance δ to the lower surface of FIG.

16 is a roll diameter corresponding value T, a distance Y from the swing axis 64 to the adjusting hole 81, and a guide surface 30 of the guide member 28. FIG.
3 is a graph showing the relationship with the distance δ from the lower surface of to the lower surface of the upper work roll 16.

FIG. 17 is a system diagram showing a simplified configuration of hydraulic means 113.

18 is a block diagram showing an electrical configuration of the guide device 1 shown in FIG.

FIG. 19 is a flowchart for explaining a vertical position switching method of the guide member 28.

FIG. 20 is a flowchart for explaining the position adjustment operation of the processing circuit 127.

[Explanation of symbols]

1 Guide device 3 rolling mill 5 First housing 6 Second housing 11 1st roll chock 15 Upper support roll 16 Upper work roll 25 Lifting drive means 26 Entry side guide means 27 Delivery side guide means 28 Guide member 29 Swing member 30 guide surface 31 connecting pin 33-pin drive means 34 Guide roller 35 hydraulic cylinder 37 Telescopic rod

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B21B 39/14

Claims (8)

(57) [Claims] 1. An elevating and lowering drive means for elevating and lowering a roll, which is provided in a housing so as to be able to ascend and descend, and a guide member, which is provided at least on the entrance side of the roll and which guides a material to be rolled, along a horizontal axis A guide member having an extending connecting hole and having a first guide portion provided in the vicinity of the connecting hole, a receiving portion formed in the housing and receiving the guide member below a position at the time of rolling, and a lifting drive means. A rocking member that is provided, moves up and down in conjunction with a roll, and is rockably supported around a horizontal axis, and is formed below the rocking axis at different distances from the rocking axis. A plurality of adjusting holes and a second guide part that abuts the first guide part and guides the adjusting hole so as to coincide with the connecting hole according to the elevation of the swinging axis; Can be inserted through any one of multiple adjustment holes A rolling material guide device for a rolling mill, comprising: an active connecting pin; and a pin driving means that drives the connecting pin to be inserted into and removed from the connecting hole and any one of a plurality of adjusting holes. 2. The first and second guide portions are formed such that the adjusting hole and the connecting hole that are farther from the swing axis coincide with each other as the swing member rises, and the center of gravity of the swing member has the swing axis line. The rolled material guide device for a rolling mill according to claim 1, wherein the rolled material guide device is present on the side opposite to the first guide portion of the guide member with respect to the vertical plane including the. 3. The first guide part is provided on the upper part of the guide member and is composed of a guide roller rotatable about a lateral axis, and the second guide part is a guide which contacts the guide roller below the adjusting hole. 3. A rolled material guide device for a rolling mill according to claim 1 or 2, which is formed of a surface. 4. The housing is provided with an upper work roll and at least one support roll provided above the upper work roll, position detecting means for detecting a vertical position of the swing member, and the upper work roll. And the diameter of at least one support roll provided above the upper work roll, the adjustment hole of the rocking member to be connected to the connection hole of the guide member is selected from the plurality of adjustment holes. A target position in the vertical direction of the swing member for matching the selected adjusting hole with the connecting hole is obtained based on the distance between the selected adjusting hole and the swing axis, and is output to the position detecting means. The rolling mill according to any one of claims 1 to 3, further comprising: a control unit that responds and controls the elevating and lowering drive unit so that the detected position of the swinging member becomes the obtained target position. Material to be rolled De devices. 5. The elevating and lowering drive means is provided on a housing, and has a hydraulic cylinder having a telescopic rod that is capable of expanding and contracting in a vertical direction; and hydraulic fluid supplied to the hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is raised and lowered. The hydraulic means that can be switched to one of the two states: stop and stop, and a telescopic rod of the hydraulic cylinder, which is connected to the roll chock of the support roll arranged at the uppermost position, so that the roll chock and the support roll can be moved up and down. 5. A rolled material guide device for a rolling mill according to claim 4, further comprising hanger means for supporting and swingably supporting the swing member via a bracket. 6. The first directional control valve having a hydraulic pressure source, a first position for supplying hydraulic oil from the hydraulic pressure source to the hydraulic cylinder, and a second position for causing the hydraulic oil to flow backward from the hydraulic cylinder. And a pilot that allows the hydraulic oil from the first directional control valve to pass through, causes the hydraulic oil to flow back from the hydraulic cylinder when pilot pressure is applied, and prevents the hydraulic oil from backflowing from the hydraulic cylinder when the pilot pressure is zero. Check valve, third position for supplying hydraulic oil from hydraulic source to pilot check valve to apply pilot pressure, and stop supplying hydraulic oil to pilot check valve to zero pilot pressure 6. A rolled material guide device for a rolling mill according to claim 5, further comprising a second directional control valve having a fourth position. 7. The guide member is provided with a pin support portion composed of a pair of plate-shaped support pieces provided facing each other with a space in the horizontal axis direction, and the pin support portion is provided with the pin support portion in the horizontal axis direction. A connecting hole that linearly extends through the pair of support pieces is formed in the swing member, and the swinging member has a plate-like shape, and the vicinity of the adjustment hole is inserted between the pair of support pieces. The pin drive means includes a pin drive hydraulic cylinder, and the pin drive hydraulic cylinder is attached to the guide member.
The telescopic rod of the pin drive hydraulic cylinder can extend and contract along the lateral axis direction, and the connecting pin is connected to the tip of this telescopic rod, and the connecting hole, the connecting pin, and the telescopic rod have a common axis line. It has, The rolling material guide apparatus of the rolling mill in any one of Claims 1-6 characterized by the above-mentioned. 8. A long hole is formed in the rocking member, and a support pin for rotatably supporting the rocking member on the bracket is inserted through the long hole coaxially with the rocking axis line. The elongated shape is formed along a direction connecting the swing axis line and any one of the plurality of adjustment holes.
7. A rolled material guide device for a rolling mill according to any one of 7 above.