JP2004066270A - Offset variable type pinch roll device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate maintenance work by providing a top roll laterally drawn out and fixing a bottom roll for preventing the generation of vibration accompanying transfer, etc., thereof in an offset variable type pinch roll device used when continuously rolled strips are wound alternately by two or more coiling machines. <P>SOLUTION: The offset variable type pinch roll device fundamentally comprises the bottom roll and the top roll, and the bottom roll is of a fixed type and can be laterally drawn out, while the top roll can be transferred to the horizontal and vertical direction in cooperation with a rotating cam type horizontal driving means and a vertical open-close driving means to change an offset position so that no detrimental vibration is caused and maintenance work such as parts replacement, maintenance and the like is facilitated. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable offset pinch roll apparatus used to form a branch path when a strip continuously rolled in a hot rolling line is alternately wound on two or more winders. .
[0002]
[Prior art]
A conventional method of alternately winding a strip to be hot-rolled by two or more winding machines will be described with reference to FIGS. 6 to 8 for a first example and a second example.
FIG. 6 is a side view showing an outline of a first conventional example of a variable offset pinch roll device, FIG. 7 shows an offset situation in a main part of FIG. 6, (a) before an offset, and (b) after an offset. FIG. 8 is a side view showing an outline of a second example of a conventional offset variable pinch roll device.
[0003]
As a first example of this type of conventional apparatus for alternately winding a strip to be hot-rolled by two or more winding machines, for example, Japanese Patent Application Laid-Open No. 8-281326 discloses a "winding pinch roll conveying direction switching method". The outline of which is described below with reference to FIGS.
[0004]
50 is a hot rolling line, 51 is a strip, 52 is a strip shear on the inlet side of the winding machine, 53 is a variable offset pinch roll device arranged on the upstream side, and 54 is an outlet side of the variable offset pinch roll device 53. Is a non-variable pinch roll device arranged downstream, and 56 is a second winder arranged on the exit side of the non-variable pinch roll device 55.
[0005]
The offset-variable pinch roll device 53 includes a top roll 58 that is driven down and rotated by a pressing device 57 at a fixed position, a bottom roll 60 that is horizontally moved by a horizontal cylinder 59 at a fixed height, and a bottom roll 60. A variable triangular guide 61 provided on the output side and swingable in the direction of arrow a; a variable guide 62 configured to be movable in the direction of arrow b to guide the strip 51 from the bottom roll 60 to the first winding machine 54; The variable guide 63 is configured to be movable in the direction and to enter and exit a gap formed rearward in the forward direction when the bottom roll 60 advances.
[0006]
Here, the variable offset type pinch roll device 53 determines the horizontal movement amount of the bottom roll 60 based on the sheet thickness, sheet width, yield strength, and pinch roll pressing amount of the following material when the strip 51 is cut. Calculates the bending curve of the trailing material when the pinch roll is pinched by the offset variable pinch roll device 53, and the gap between the bending curve and the variable triangular guide 61 falls within a range where the transfer trouble of the strip 51 does not occur. The movement amount of the bottom roll 60 is controlled so as to be an allowable value.
[0007]
As a second example of this type of conventional device for alternately winding a strip to be hot-rolled by two or more winding machines, for example, Japanese Patent Application Laid-Open No. 9-225529 discloses a method of operating a strip-winding machine. And a driving device, a variable offset pinch roll is a fixed bottom roll type and a top roll is configured to be variable. An outline thereof will be described below with reference to FIG.
[0008]
8, reference numeral 71 denotes a rolled strip; 72, a variable offset pinch roll device for a first winder 83; and 73, a non-variable pinch roll device for a second winder 84.
[0009]
In the second example, the variable offset pinch roll device 72 has a fixed bottom roll 74 and a variable top roll 75 instead of the variable bottom roll and the fixed top roll.
[0010]
The top roll 75 is supported at the center of the T-shaped wing member 76, and the upstream end of the wing member 76 is connected to the end of a swivel lever 78 rotatable in the running direction of the strip 71 by a swivel drive 77 by a shaft 79. The downstream end of the wing member 76 is connected to an adjusting drive device 80 and supported so as to be adjustable in the running direction and the vertical direction of the strip 71, and a swing lever is provided. The turning stroke of 78 is configured to be limited by the stoppers 81 and 82.
[0011]
In the device shown as the second example, when the strip 71 is guided to the first winder 83, the turning drive device 77 turns the turning lever 78 to a position where it comes into contact with the stopper 82, and the adjustment driving device 80 adjusts the height. Then, the top roll 75 is moved to the position indicated by the dotted line 75a.
[0012]
When the strip 71 is guided to the second winding machine 84, the top roll 75 is moved to the solid line position by returning the turning lever 78 to a position in contact with the stopper 81 and adjusting the height by the adjustment driving device 80. Has become.
[0013]
[Problems to be solved by the invention]
However, in the first example described above, the bottom roll 60 swings when the bottom roll 60 moves, and the swing is transmitted to the strip 51, and the strip 51 is wound right and left on the first winder 54. There is a problem that misalignment is likely to occur due to misalignment.
[0014]
Since the center of the bottom roll 60 changes relative to the center of the first winder 54 by the movement of the bottom roll 60, the movement of the bottom roll 60 coincides with the movement of the bottom roll 60 as shown in FIGS. It is necessary to move the variable triangular guide 61, the variable guide 62, and the variable guide 63, and if the amount of change between the bottom roll 60 and the winder 54 is large, the strip 51 being wound will have the variable triangular guide 61, variable There is a risk that the plate may break due to contact with the guide 62, the variable guide 63, and the like.
[0015]
On the other hand, in the second example, a fixed bottom roll 74 and a variable top roll 75 are employed in place of the variable bottom roll 60 and the fixed top roll 58. However, when the position of the top roll 75 is adjusted while the turning lever 78 is not in contact with the stopper 81 or 82, the wing member 76 is connected to the turning driving device 77. Since the state is supported by the hydraulic pressure of the hydraulic device constituting the adjustment drive device 80, the support of the top roll 75 becomes unstable.
[0016]
That is, in the second example, the variable offset pinch roll device 72 can be used stably only at two fixed positions where the swing lever 78 contacts the stopper 81 or 82.
[0017]
Also, since only the side view is shown and the plan view is omitted, it is not always clear only from the display of the drawing, but in the second example, the top rolls 75 are arranged on both sides in the width direction of the strip 71. Since both ends are supported by the pair of wing members 76 provided, the wing members 76 themselves become obstacles, so that it is difficult to pull out the top roll 75 in the lateral direction, which makes maintenance extremely difficult. There is.
[0018]
The present invention solves such problems in the conventional apparatus, fixes the bottom roll, prevents the occurrence of troublesome vibration due to its movement and swing, and enables the lateral roll-out and the stable use of the top. It is an object of the present invention to provide a variable offset type pinch roll device that includes a roll and facilitates maintenance work.
[0019]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-mentioned problem, and as a first means, a variable offset type pinch roll for alternately winding a plurality of winding machines connected to a line of a continuous rolling mill. The apparatus has a fixed bottom roll capable of horizontal pulling, and a top roll capable of moving horizontally and vertically, and the top roll is moved horizontally and vertically by a rotating cam type horizontal driving means and a vertical opening / closing driving means to be in an offset position. To provide a variable offset type pinch roll device configured to be able to change the pinch roll device.
[0020]
That is, according to the first means, of the bottom roll and the top roll which are the basic elements constituting the variable offset pinch roll device, the former bottom roll is a fixed type and can be laterally pulled out, The top roll cooperates with the rotating cam type horizontal driving means and the vertical opening / closing driving means, and is moved in the horizontal direction by the rotary cam type horizontal driving means and in the vertical direction by the vertical opening / closing driving means to change the offset position. Therefore, there is no occurrence of troublesome vibration following the movement and swinging of the bottom roll, which is a problem in the conventional device, and the bottom roll can be laterally pulled out. Thus, it is possible to obtain a variable offset type pinch roll device which can be used for stable operation and facilitates maintenance such as replacement and maintenance.
[0021]
The present invention also provides, as a second means, a variable offset pinch roll device in which the top roll is held by a top roll support frame so as to be able to be laterally pulled out in the first means.
[0022]
That is, according to the second means, the bottom roll is fixed and can be laterally removed, and the top roll is horizontally and vertically moved and offset by the rotating cam type horizontal driving means and the vertical opening and closing driving means. In addition to the first means, since the top roll can also be laterally pulled out, there is no troublesome vibration caused by the movement and swing of the bottom roll, and both the bottom roll and the top roll can be laterally pulled out. , Maintenance work and the like are further facilitated.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
1 is a side view of a variable offset type pinch roll device according to the present embodiment, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2, FIG. FIG. 7 is a flowchart showing a procedure for changing an offset of a pinch roll.
[0024]
That is, in the present embodiment, reference numeral 10 denotes a variable offset pinch roll device, 11 denotes a rolled strip, 12 denotes a first winder, 13 denotes a second winder, and 14 denotes a second winder 13. It is a non-variable pinch roll device.
[0025]
The variable offset pinch roll device 10 is fixed to a pair of horizontal pedestals 21 provided on both sides of the line and to be able to be laterally pulled out by using appropriate support dirtying that can be attached to and detached from the recess 21 a of each pedestal 21. A bottom roller 22, a rotating shaft 24 laterally supported on a pair of support members 23 provided on the entrance side of each mount 21, and a cam 25 fixed on the rotary shaft 24 at a position on each mount 21. And an eccentric shaft 26 supported on the cam 25, and a driving means 27 for rotating the cam 25 provided on each mount 21 in connection with a fixed lever 24a at the end of the rotating shaft 24.
[0026]
In addition, a T-section connecting portion 28a is provided on the upstream side portion, and the connecting portion 28a is connected to the eccentric shaft 26 of the cam 25 at the connecting portion 28a, and the other end is connected to the other end of each pedestal 21 by the telescopic opening / closing drive means 29. And a pair of openable / closable yokes 28 provided.
[0027]
Also, a pair of top roll support frames 31 formed by connecting the upstream extension 31a to the connection portion 28a of the opening and closing yoke 28 by a connection shaft 30 and forming a downward U-shape facing the bottom roll 22 is provided. ing.
[0028]
On an upper surface of the top roll supporting frame 31, a lifting means 32 provided on an openable yoke 28 for lifting the top roll supporting frame 31 is connected, and is arranged alongside the lifting means 32 on the openable yoke 28. And a pressing-down means 33 which comes into contact with the upper surface of the top roll supporting frame 31 and presses down the same.
[0029]
In addition, jacks 34 are respectively provided at lower and side portions of the top roll support frame 31 at positions facing inward surrounded by the downward U-shaped shape, and the jacks 34 support the chock portions 35a. The top roll 35 is mounted in the top roll support frame 31 so as to be able to be laterally pulled out.
[0030]
Reference numeral 36 denotes a columnar stopper. The columnar stopper 36 is provided on the gantry 21 so as to be in contact with the front lower surface of the openable yoke 28, and a rear portion of the openable yoke 28 is vertically disposed between the connecting portion 28 a and the gantry 21. A push-up spring 37 is provided to connect and cancel the weight on the rear side of the yoke 28.
[0031]
In the present embodiment configured as described above, when switching between the state in which the rolled strip 11 is guided to the first winder 12 and the state in which the strip 11 is guided to the second winder 13, the top roll is moved. The operation of the offset variable pinch roll device 10 for changing the offset will be described step by step according to the procedures shown in FIGS.
[0032]
FIG. 5A shows that the opening / closing yoke 28 is moved forward by rotating the cam 25 counterclockwise by the driving of the driving means 27 for rotating the cam 25, and the opening / closing type is driven by the driving of the opening / closing driving means 29. In this state, the yoke 28 is lowered to a position where it comes into contact with the stopper 36, and the top roll 35 is offset from the fixed bottom roll 22 by a predetermined distance (to the left in the drawing).
[0033]
Here, the openable yoke 28 is supported by the stopper 36, the push-up spring 37, and the cam 25, and the rear weight of the openable yoke 28 to be applied to the cam 25 is canceled by the push-up force of the push-up spring 37.
[0034]
Further, the top roll supporting frame 31 and the top roll 35 are pressed down by the pressing down means 33 on the opening / closing yoke 28 so as to guide the strip 11 to the first winder 12, and at the same time, the top roll supporting frame 31 is lifted by the lifting means 32. By pulling the strip 11 toward the opening / closing yoke 28, the gap between the rotating shaft 24, the eccentric shaft 26, and the connecting shaft 30 of the top roll support frame 31 is maintained in a zero state. Winding is ensured stably.
[0035]
FIG. 5B shows a state in which the winding on the first winder 12 is almost completed, and the opening / closing yoke 28 is turned up around the eccentric shaft 26 by a predetermined distance by the driving of the opening / closing drive means 29. .
[0036]
Here, the top roll support frame 31 and the top roll 35 rotate together with the opening / closing yoke 28 and move upward, and at this time, the weight applied to the rear side of the opening / closing yoke 28 is The type yoke 28 rotates around the eccentric shaft 26.
[0037]
FIG. 5C shows that the cam 25 is rotated clockwise by the driving of the driving means 27 for rotating the cam 25, and the opening / closing yoke 28, the top roll support frame 31, and the top roll 35 as a whole are opened and closed together with the opening / closing drive means 29. This is a state of being pulled toward the upstream side by a fixed distance (rightward in the figure).
[0038]
At this time, the weight applied to the rear side of the openable yoke 28 is canceled by the push-up force of the push-up spring 37, so that the open / close yoke 28, the top roll support frame 31, and the top roll can be smoothly rotated and adjusted in position. 35 can be set at an arbitrary position on the upstream side.
[0039]
FIG. 5D shows that the opening / closing yoke 28 is rotated on the stopper 36 by the closing drive of the opening / closing drive means 29, and the top roll 35 is slightly rearward of the fixed bottom roll 22 (to the right in the figure). Is offset to the position of.
[0040]
When the strip 11 is cut by the strip shear 38 in this state, the strip 11 forward from the cut portion is taken into the first winder 12, and the leading end of the following strip 11 is formed by the top roll 35 and the fixed bottom roll 22. The pinch roll bites into the gap, reaches the front non-variable pinch roll 14, and is guided to the second winder 13.
[0041]
The process from the state where the strip 11 is wound on the first winder 12 to the state where the strip 11 is wound on the second winder 13 has been described in the order of FIGS. 5A to 5D. When switching from the state in which the strip 11 is wound on the second winder 13 to the state in which the strip 11 is wound on the first winder 12, the state shown in FIG. 5D is changed from (c) to (b) to (b). After performing the offset operation of the top roll 35 in the reverse procedure of a), the strip 11 may be cut by the strip shear 38.
[0042]
As described above, according to the present embodiment, the cam 25 can be rotated in a state where the weight applied to the rear side of the opening and closing yoke 28 is canceled by the push-up spring 37, and the top roll 35 can be easily and reliably moved by the cam mechanism. The offset can be changed.
[0043]
Further, after the top roll 35 is offset-moved in the front-rear direction, the openable yoke 28 is positioned on the fixed stopper 36 and the push-up spring 37 on the gantry 21, and each of the pin connecting portions is separated by the pressing-down means 33 and the lifting means 32. By lowering the top roll 35 in the zero state, the offset switching of the top roll 35 to a plurality of winding machines and the winding of the strip 11 can always be performed with high accuracy and stably.
[0044]
In addition, the bottom roll 22 and the top roll 35 incorporate the support mechanism supported by the concave portion 21a of the gantry 21 and the chock portion 35a supported by the downward U-shaped portion of the top roll support frame 31, and It becomes possible to quickly perform rearrangement and maintenance by pulling out sideways.
[0045]
Further, since the bottom roll 22 is used in a fixed state in a steady state, the overall configuration is simplified as a variable guide mechanism, the danger of contact with the strip 11 and the risk of the strip 11 being broken are eliminated, and a separate avoidance device is not required. It is simplified.
[0046]
Thus, according to the present embodiment, it is possible to obtain a variable offset type pinch roll device that can be used stably with high accuracy and that facilitates maintenance such as rearrangement and maintenance.
[0047]
As described above, the present invention has been described with reference to the illustrated embodiments. However, the present invention is not limited to such embodiments, and it goes without saying that various changes may be made to the specific structure within the scope of the present invention. Absent.
[0048]
【The invention's effect】
As described above, according to the invention described in claim 1 of the present application, in a variable offset pinch roll device for alternately winding a plurality of winding machines connected to a line of a continuous rolling device, a horizontal punching is possible. A fixed bottom roll and a top roll capable of moving horizontally and vertically, and the top roll is moved horizontally and vertically by a rotating cam type horizontal driving means and a vertical opening and closing driving means so that the offset position can be changed. As described above, the variable offset type pinch roll device is constituted, and as described above, of the bottom roll and the top roll which are the basic elements constituting the variable offset pinch roll device, the former is a fixed type and can be laterally pulled out. The latter cooperates with the rotating cam type horizontal driving means and the vertical opening / closing driving means, and the rotary cam type horizontal driving means moves in the horizontal direction, Since the offset position is changed by being moved up and down by the step, the movement of the bottom roll, which has been a problem in the conventional device, does not generate any troublesome vibration that follows the swing, and Able to provide a stable offset operation, in addition to the fact that the bottom roll can be laterally removed, and obtain a suitable offset variable pinch roll device that facilitates maintenance such as replacement and maintenance. It is.
[0049]
According to a second aspect of the present invention, in the first aspect of the present invention, the top roll is held by a top roll support frame so as to be able to be laterally pulled to form a variable offset pinch roll device. Therefore, as described above, the bottom roll is fixed and can be laterally pulled out, and the top roll is horizontally and vertically moved and offset by the rotating cam type horizontal driving means and the vertical opening and closing driving means. In addition to the invention described in 1, the top roll can also be laterally pulled out, so that there is no troublesome vibration caused by the movement and swing of the bottom roll, and both the bottom roll and top roll can be horizontally pulled out. As a result, it is possible to obtain a suitable offset variable pinch roll device in which maintenance work and the like are further facilitated.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of a variable offset type pinch roll device according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;
FIG. 4 is an overall perspective view of the variable offset pinch roll device of FIG. 1;
FIG. 5 is a flowchart showing a procedure for changing the offset of a pinch roll.
FIG. 6 is a side view showing the outline of a variable offset type pinch roll device as a first example of a conventional device.
FIGS. 7A and 7B are explanatory diagrams showing an offset state in a main part of FIG. 6, wherein FIG. 7A is an explanatory diagram before an offset and FIG.
FIG. 8 is a side view showing an outline of a variable offset type pinch roll device as a second example of the conventional device.
[Explanation of symbols]
Reference Signs List 10 offset variable pinch roll device 11 strip 12 first winder 13 second winder 14 non-variable pinch roll device 21 gantry 22 bottom roll 23 support member 24 rotating shaft 25 cam 26 eccentric shaft 27 driving means 28 openable Yoke 28a Connecting part 29 Opening / closing drive means 30 Connecting shaft 31 Top roll support frame 32 Lifting means 33 Push-down means 34 Jack 35 Top roll 35a Chock part 36 Columnar stopper 37 Push-up spring 38 Strip shear 50 Hot rolling line 51 Strip 52 Strip shear 53 Offset variable pinch roll device 54 First winder 55 Non-variable pinch roll 56 Second winder 57 Depressurizing device 58 Top roll 59 Horizontal cylinder 60 Bottom roll 61 Variable triangular guide 62 Variable guide 63 Variable guide 71 Strip 72 Variable offset type pinch roll device 73 Non-variable type pinch roll device 74 Bottom roll 75, 75a Top roll 76 Wing member 77 Rotation drive device 78 Swivel lever 79 Connecting shaft 80 Adjustment driving device 81, 82 Stopper 83 First winder 84 Second winder

Claims (2)

A variable offset type pinch roll device for alternately winding on a plurality of winding machines connected to a line of a continuous rolling device, comprising a fixed bottom roll capable of horizontal punching and a top roll capable of horizontal and vertical movement. A variable offset pinch roll device wherein the top roll is moved horizontally and vertically by a rotary cam type horizontal driving means and a vertical opening / closing driving means to change an offset position. 2. The variable offset type pinch roll device according to claim 1, wherein the top roll is held by a top roll support frame so that the top roll can be laterally pulled out. 3.

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