JP3769744B2 - Coil winding device and coil winding / rewinding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coil winding device and a coil winding / rewinding device in a hot rolling facility.
[0002]
[Prior art]
In a hot rolling facility that performs finish rolling after rough rolling, as schematically shown in FIG. 6 (A), a rough rolling mill is used to roll the bar to a thickness of 30 to 50 mm, and then the finishing rolling mill is further several mm thick. Roll to strip. In this case, there is a problem that after rough rolling is completed, the time until finish rolling is completed is long, and the rear end of the bar becomes lower in temperature than the front end, making uniform finishing difficult. Therefore, as schematically shown in FIG. 6 (B), a method has already been disclosed in which the bar after rough rolling is wound into a coil shape and finish-rolled while rewinding it. By this method, temperature drop of the entire bar is prevented and finish rolling is performed from the rear end in rough rolling, so that the temperature difference between the front and rear ends of the bar can be made substantially the same. As a device, for example, a transfer mandrel is inserted into a hollow hole of a coreless coil wound up by a coil winding device that does not use a mandrel, and the mandrel is swung and conveyed to a coil rewinding device to wind the coil. The thing which performs the return, etc. is adopted. However, even in such a device, if attention is paid to the temperature distribution in the bar width direction, the coil end portion is easier to cool than the central portion of the coil width, and the inner winding of the coil is exposed to the air. It was easy to get cold. Furthermore, since winding is performed without a mandrel without using a mandrel, there is a problem that the winding speed cannot be increased and the whole is cooled. Therefore, a method of heating both end faces of the coil with a heat panel having a burner or the like has been proposed.
[0003]
Further, as shown in FIG. 5, there are those intended for a thin rolled material or intended for increasing the winding speed. The apparatus shown in FIG. 5 is configured to perform winding and unwinding of the coil 3 at the same position, and the rolled material 1 conveyed to the mandrel 2 is made up of three wrappers 23 each having a wrapper roll 23r. As shown by the broken line, the wrapper 23 is retracted to a position where it does not interfere with the formation of the coil 3, and when the coil 3 reaches a predetermined dimension, the coil end is peeled off from the coil surface by the peeler 24. Then, rewinding is performed as indicated by the alternate long and short dash line. Even in this case, focusing on the temperature distribution in the bar width direction, the coil end portion is easier to cool than the central portion of the width of the coil 3, and the inner volume of the coil 3 is easily cooled because the heat is taken away by the mandrel 2. It was. Therefore, a method of heating both end surfaces of the coil 3 with a heat panel having a burner or the like has been proposed.
[0004]
[Problems to be solved by the invention]
As described above, when both ends of the coil are heated by the heat panel, there are the following problems.
(1) When a coil winding device that does not use a mandrel and winds up without a core is used, it is necessary to transport the coil to the coil unwinding device with a transfer mandrel, and the heat panel has to be largely cut away. . Therefore, the effective area of the heat panel is greatly reduced, and sufficient heat shielding (heat shielding) cannot be performed.
[0005]
(2) When a coil winding device that winds using a mandrel is used, since the rolled material is wound around the mandrel with a plurality of wrapper rolls, the effective area of the heat panel is reduced, and a sufficient heat shield ( Heat shielding) was not possible.
(3) Even if both end faces of the coil are heated by the heat panel, most of the heat escapes upward and is inefficient, and it is necessary to provide some heat retaining means, but there is a wrapper or peeler on the top of the coil. In the case where it is provided, it has been impossible to provide a heat retaining means for covering the upper surface of the coil.
[0006]
The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a coil winding device and a coil winding / rewinding device that can wind the coil at a high speed and can keep the coil sufficiently and uniformly heated.
[0007]
[Means for Solving the Problems]
According to the present invention, after the hot-rolled material is roughly rolled, it is wound into a coil shape using a mandrel at the winding position, and the coil is transferred from the winding position to the rewinding position and wound at the rewinding position. In the coil winding device provided on the hot rolling line that finish-rolls while returning, at the start of winding the coil, a part of the mandrel in the circumferential direction covers the entire width along the circumferential surface, and the coil When the winding is completed, the apron that supports the coil at the tip, the apron movable device that moves the apron closer to or away from the peripheral surface of the mandrel, the wrapper that makes the wrapper roll contact the top of the mandrel, and the mandrel are removed. A cradle roll that supports the coil after removal, a transport roll that guides the hot-rolled material after the rough rolling to a mandrel, and coils on both sides of the winding position A coil comprising: a heat panel which is provided so as to face the surface and which heats both end faces thereof; and a heat cover which is provided above the winding position and which keeps heat of the heat panel. A winding device is provided.
[0008]
The present invention described above relates to a coil winding device that is used when winding and rewinding a coil by completely separating a winding position and a rewinding position. Thus, by completely separating the winding position and the rewinding position, it is possible to eliminate a peeler that peels the coil end from above the coil winding device. Moreover, by using a mandrel for winding, it can wind up at high speed and can wind up the rolling material of a thin plate stably. Furthermore, the number of wrapper rolls used when winding the rolled material around the mandrel has been reduced to the minimum necessary, and the apron has been adopted as an alternative to eliminate obstacles during coil winding from the coil peripheral surface and end surface. can do. Therefore, it is possible to provide a heat panel or a heat cover sufficient to prevent the temperature of the coil from being lowered, and the coil can be efficiently and uniformly heated.
[0009]
According to the embodiment of the present invention, (1) the apron is disposed on the upstream side and the downstream side of the mandrel, respectively, and the inner peripheral surface extends from the side part to the lower part of the mandrel. It is preferable that the peripheral surface has a curved surface with a certain gap, and further, the distal end portion thereof has a curved surface capable of supporting the coil. (2) The apron movable device includes the apron. It is preferable to include an apron opening / closing mechanism that opens and closes the upper end of the apron, and an apron lifting mechanism that lifts and lowers the apron. (3) The wrapper includes a wrapper arm that supports both ends of the wrapper roll, It is preferable that the wrapper arm bends with a convex portion at an intermediate portion, and one end of the wrapper arm is fixed so as to be rotatable upstream of the winding position. (4) The cradle roll Is preferably configured to be able to retract obliquely downward so as not to interfere with the apron movable device. (5) The transport roll includes a horizontal position through which the rolled material passes through a winding position and the rolled material. It is preferable that the guide position guided to the mandrel can be switched, and a guide for bridging the gap with the mandrel is preferably provided on the most downstream transport roll.
[0010]
According to the above-described embodiment of the present invention, the apron is divided into the upstream side and the downstream side, and the apron can be moved up and down and opened and closed, so that the apron is approached from the lower side of the mandrel. The rolled material can be separated, and the rolled material can be stably guided from both side surfaces to the lower surface of the mandrel. A wrapper roll is brought into contact with the top of the mandrel from the upstream side of the winding position, so that the rolled material can be guided to be wound around the mandrel over almost the entire peripheral surface of the mandrel. The wrapper arm that supports the wrapper roll is bent with the convex portion facing up at the intermediate portion, so that the formation of the coil is not hindered, and the upper and lower difference of the track of the wrapper roll can be suppressed. Therefore, an obstacle at the time of winding the coil can be eliminated from the coil end face and from above, and a sufficient heat panel and heat cover can be provided to prevent a decrease in coil temperature. In consideration of coil transfer, a cradle roll that supports the coil after the mandrel is removed is provided. When the cradle roll and the apron movable device interfere with each other, the cradle roll can be retracted obliquely downward. It is necessary to do so. Furthermore, if the transport roll that guides the rolled material to the mandrel can be switched between the guide position and the horizontal position, the apparatus can be passed during pass-through without winding.
[0011]
Furthermore, according to the present invention, The method according to any one of claims 1 to 6. A coil comprising: a coil winding device; a coil unwinding device provided at the unwinding position; and a coil transfer means for transferring a coil from the coil winding device to the coil unwinding device. A winding / rewinding device is provided.
[0012]
The present invention described above relates to a coil winding / rewinding device using the coil winding device of the present invention described in claims 1 to 6. By configuring the coil winding / rewinding device in this way, the coil can be wound at high speed, the coil can be sufficiently and uniformly heated, and the bar after rolling can be finished uniformly. Can do.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 is a side view of the coil winding device of the present invention, and shows the start of coil winding with a solid line. The coil winding device of the present invention shown in this figure covers the entire width of the mandrel 2 in the circumferential direction at the start of coil winding, and covers the entire width along the circumferential surface. The apron 4 that supports the apron, the apron movable device 5 that causes the apron 4 to approach or separate from the peripheral surface of the mandrel 2, the wrapper 6 that causes the wrapper roll 6r to contact the top of the mandrel 2, and the mandrel 2 The cradle roll 7 for supporting the coil, the transport roll 8 for guiding the hot-rolled material 1 after the rough rolling to the mandrel 2, and the coil end faces are provided on both sides of the winding position so that both end faces are provided. A heat panel (not shown) for heating and a heat cover (not shown) for keeping the heat of the heat panel provided above the winding position are provided. The heat panel and the heat cover will be described later with reference to FIG.
[0014]
The apron 4 is divided into an upstream side and a downstream side of the mandrel 2, and each inner peripheral surface has a curved surface along the peripheral surface extending from the side part of the mandrel 2 to the lower part with a certain gap. Furthermore, it has the curved surface which can support a coil in the front-end | tip part. The apron movable device 5 includes an apron opening / closing mechanism 9 that opens and closes the upper end of the apron 4 and an apron lifting mechanism 10 that raises and lowers the apron 4. Here, a small actuator is used as the apron opening / closing mechanism 9, and a large actuator is used as the apron lifting / lowering mechanism 10. One end of each apron 4 is rotatably attached to an apron support member 11 that is lifted and lowered by an apron lifting mechanism 9. An actuator 9 which is an apron opening / closing mechanism is also attached to the apron support member 11, and a connecting member 12 fixed to one end of each apron 4 is rotatably attached to the front and rear ends of the actuator 9. Therefore, when the actuator 9 is extended, the tip of the apron 4 is closed as shown by a broken line, and when the actuator 9 is contracted, the tip of the apron 4 is opened as shown by a solid line. The apron support member 11 has a cylindrical shape that covers the actuator 10 that is an apron lifting mechanism, and is connected to the tip of the actuator 10 inside. Therefore, if the actuator 10 is extended, the apron 4 rises and approaches the position covering the mandrel 2 as shown by the solid line, and if it is contracted, the apron 4 descends and separates (retracts) as shown by the broken line. To do. In addition, a plurality of guide rolls 13 for vertically raising and lowering the apron 4 are provided on the outer peripheral surface of the apron support member 11.
[0015]
The wrapper 6 has a wrapper arm 6a that supports both end portions of the wrapper roll 6r. The wrapper arm 6a is bent with a convex portion up at an intermediate portion, and one end of the wrapper arm 6a is rotated upstream of the winding position. It is fixed so that it can move. The rotating shaft 6s for rotating the wrapper arm 6a is provided on the wrapper arm 6a from the outer side in the width direction of the rolled material 1, and the rolled material 1 and the wrapper 6 do not interfere with each other. Further, a tip of an actuator (not shown) is connected to the back surface of the wrapper arm 6a, and the wrapper 6 is rotated by the expansion and contraction of the actuator so that the wrapper roll 6r abuts on the top of the mandrel 2 or is indicated by a broken line. Or evacuate. With such a configuration of the wrapper 6, the wrapper arm 6a does not hinder the formation of the coil, and the upper and lower differences of the track of the wrapper roll 6r can be suppressed. Therefore, obstacles can be eliminated from the coil end face, from above and downstream.
[0016]
The cradle roll 7 is provided to support the coil after the mandrel 2 is removed in consideration of the transfer of the coil. On the other hand, the apron 4 is retracted so that the tip end portion is accommodated between the cradle rolls 7 as indicated by broken lines in FIG. By retracting the apron 4 in this manner, a small-diameter coil can be supported at the tip. Further, when the cradle roll 7 and the apron movable device 5 (or the apron 4) interfere when the apron 4 is moved up and down, as shown in FIG. 1, the cradle roll 7 is supported so as to be rotatable. The member 7a is fixed so as to be rotatable, and is rotated about the rotation axis of the support member 7a by an actuator (not shown) so that it can be retracted as indicated by a solid line or returned as indicated by a broken line. . Although not shown, an actuator may be directly connected to the rotation shaft of the cradle roll 7 so that it can be retracted obliquely downward.
[0017]
The transport roll 8 is configured to be able to switch between a horizontal position indicated by a broken line that passes the rolled material 1 through the winding position and a guide position indicated by a solid line that guides the rolled material 1 to the mandrel 2, and further to the most downstream side thereof. The transport roll 8s is provided with a guide 8g that bridges the gap with the mandrel 2. In order to perform this switching, it is only necessary to provide an elevating mechanism on the transport roll 8 in a portion close to the coil winding device among the transport rolls of the rolled material 1 continuing from the rough rolling line. As the lifting mechanism, although not shown, an actuator may be provided for each transport roll 8 or the transport rolls 8 may be supported by a rotatable frame. Further, the guide 8g provided on the most downstream conveyance roll 8s is provided so as to be rotatable with respect to the conveyance roll 8s, and is normally positioned below the conveyance roll 8s as shown by a broken line, and is guided. When switched to the position, it follows the line. Moreover, the guide position of the conveyance roll 8 can be changed with winding of a coil by the raising / lowering mechanism mentioned above.
[0018]
The operation of the above-described coil winding device of the present invention will be described with reference to FIG. In FIG. 2, (A) shows the time of starting winding, (B) shows the time of winding completion, and (C) shows the time of pass-through.
[0019]
At the start of winding, as shown in FIG. 2A, first, the cradle roll 7 is retracted, the apron 4 is brought close to the mandrel 2 by the apron lifting mechanism 10, and the apron 4 is opened by the apron opening / closing mechanism 9. The apron 4 is moved to a predetermined height (a height that can cover the mandrel 2). Thereafter, the apron 4 is closed by the apron opening / closing mechanism 9, the wrapper 6 is rotated, and the wrapper roll 6 r is brought into contact with the mandrel 2. Then, the transport roll 8 is switched to the guide position. Thus, preparation for starting winding is completed, and the rolled material 1 is wound around the mandrel 2. When the rolled material 1 is wound around the mandrel 2 about 2 to 3 times, the apron 4 and the wrapper roll 6r are retracted (see FIG. 2B).
[0020]
When the winding is completed, as shown in FIG. 2B, the apron 4 is retracted so that the tip portion is positioned between the cradle rolls 7, and the wrapper roll 6r is retracted upward. And in order to rewind the coil 3, it is necessary to transfer the coil 3 to a coil rewinding apparatus. The transfer and rewinding of the coil 3 will be described later. On the other hand, in the coil winding device, it is necessary to remove the mandrel 2 to prepare for the transfer of the coil 3. Therefore, the cradle roll 7 that has been retracted is returned to support the coil 3. When the coil 3 is a small diameter coil, the coil is supported by a curved surface provided at the tip of the apron 4.
[0021]
At the time of pass-through, as shown in FIG. 2C, the transport roll 8 is switched to the horizontal position, and the cradle roll 7 is not retracted, and constitutes a part of the transport roll 8. . Of course, the apron 4 and the wrapper roll 6r are in a retracted state. And at the time of pass-through which does not wind up a coil, the rolling material 1 passes on the conveyance roll 8 located in a line.
[0022]
The coil winding device of the present invention described above relates to a coil winding device used when winding and rewinding a coil by completely separating a winding position and a rewinding position. Thus, by completely separating the winding position and the rewinding position, it is possible to eliminate a peeler that peels the coil end from above the coil winding device. Moreover, by using the mandrel 2 for winding, it can wind up at high speed and can roll up the rolling material 1 of a thin plate stably. Furthermore, the wrapper roll 6r used when the rolled material 1 is wound around the mandrel 2 is reduced to the minimum necessary, and the apron 4 is adopted as an alternative means thereof, so that the coil peripheral surface, end surface and Obstacles can be eliminated from the downstream side. Therefore, it is possible to provide a heat panel or a heat cover sufficient to prevent the temperature of the coil from being lowered, and the coil can be efficiently and uniformly heated.
[0023]
FIG. 3 is a side view showing an embodiment of the coil winding / rewinding device of the present invention using the above-described coil winding device. The coil winding / rewinding device of the present invention shown in this figure is provided downstream of the coil winding device 14 of the present invention for winding the hot-rolled material 1 after rough rolling into a coil shape. A coil rewinding device 15 for rewinding the coil 3, a coil 16 provided above the coil winding device 14 and the coil rewinding device 15, and extending on the rail 16 from the upstream side to the downstream side of the hot rolling line. A lifter 17 that is movably provided and transfers the coil 3 from the coil winding device 14 to the coil unwinding device 15; a heat panel 18 that heats both coil end faces of the coil winding device 14 and the coil unwinding device 15; And a heat cover 19 provided below the rail 16. That is, the rail 16 and the lifter 17 constitute a transfer means for the coil 3. In FIG. 3, the illustration of the near-side heat panel 18 is omitted.
[0024]
The coil unwinding device 15 uses a device that does not require a mandrel or a wrapper on both end faces of the coil 3 and can be rewound without a so-called core. That is, the coil 3 is supported by the cradle roll 20, the end of the coil 3 is peeled off by the peeler 21, and rewinding is performed. The peeler 21 is pivotally connected to a peeler support member 22 fixed to the rail 16, and comes into contact with the coil 3 only when the end of the coil 3 is peeled off at the beginning of rewinding. Evacuated. Further, a heat panel 18 for heating both end surfaces of the coil 3 is provided at a side of the coil unwinding device 15, that is, at a position facing both end surfaces of the coil 3 transferred to the coil unwinding device 15. . Although not shown, the heat panel 18 has a plurality of burners, and can be moved toward and away from both end faces of the coil 3 by an actuator or the like. Although the same thing as this heat panel 18 is provided also in the both sides of the coil winding apparatus 14, only the part by which the mandrel 2 is inserted / removed is notched circularly here. Note that these heat panels 18 may be integrated. In addition, a heat cover 19 for covering and keeping the upper surface of the coil 3 is fixed to the rail 16 at the upper part from the coil unwinding device 15 to the coil winding device 14, and although not shown, the cross section is not shown. It is formed in a substantially U shape so that the heat of the heat panel 18 is not released. However, the center portion of the heat cover 19 is notched so that the lifter 17 can travel between the coil winding device 14 and the coil rewinding device 15. The heat cover 19 may be provided with a burner for heating the coil 3, or the heat cover 19 may be divided and provided in each of the coil winding device 14 and the coil rewinding device 15. Also good.
[0025]
The rail 16 is supported by a floor or a wall in the factory, and has at least a length from the coil winding device 14 to the coil unwinding device 15. A lifter 17 is placed on the rail 16. The lifter 17 includes a coil gripping mechanism and a coil lifting mechanism in addition to a traversing mechanism that traverses on the rail 16. The transverse mechanism of the lifter 17 includes a carriage 17t having four wheels 17w, and a moving actuator 17a having a tip connected to the carriage 17t and a main body fixed to the end of the rail 16. In addition, the coil gripping mechanism includes a motor 17m provided on the carriage 17t, a hook 17f provided on a shaft core portion of the coil 3 so as to be able to project and retract, and a rotational movement of the motor 17m to an expansion / contraction movement in the width direction of the coil 3. And a power transmission mechanism (not shown) for transmission by conversion. Further, the coil raising / lowering mechanism is constituted by a raising / lowering actuator 17c that moves up and down in the vertical direction integrally with the motor 17m, the hook 17f, and the power transmission mechanism. Two actuators 17c for raising and lowering are provided on the carriage 17t so as to face upward in the vertical direction, and a plate-like motor support member 17n for supporting the motor 17m is connected to the tip of the actuator 17c. The motor 17m is supported on the motor support member 17n with the tip of the rotary drive facing downward in the vertical direction, and the tip of the motor 17m extends between the rails 16 and transmits power such as a bevel gear. It is connected to the mechanism. The hook 17 f has, for example, an L shape, and a tip portion of the hook 17 f can be inserted into the hollow hole of the axial core portion of the coil 3. Instead of the moving actuator 17a constituting the traversing mechanism of the lifter 17, a driving device may be mounted on the carriage 17t so as to travel on the rail 16 in a self-propelled manner.
[0026]
Next, the operation of the coil winding / rewinding device will be described with reference to FIG. In FIG. 4, (A) shows the start of transfer, (B) shows the end of transfer, and (C) shows the waiting time.
(1) At the time of winding the coil 3, the lifter 17 stands by at the standby position as shown in FIG. At this time, the hook 17 f is opened and retracted in the width direction of the coil 3 so as not to contact the coil 3.
(2) When the winding of the coil 3 is completed, as shown in FIG. 2B, the apron 4 and the wrapper 6 of the coil winding device 14 are retracted, the cradle roll 7 is returned, and the mandrel 2 is removed. In this state, the coil 3 is supported. When the transfer of the coil 3 is started from this state, as shown in FIG. 4A, the lifter 17 is moved from the standby position to the winding position by the action of the moving actuator 17a. When the lifter 17 reaches the winding position, the motor 17m is operated to insert the tip of the hook 17f into the hollow hole of the coil 3. Further, the coil 3 is lifted by the action of the lifting actuator 17c.
(3) After that, as shown in FIG. 4B, the moving actuator 17a is contracted, and the lifter 17 is translated to the rewind position. At this time, the heat panel 18 is opened and retracted in the width direction of the coil 3 so as not to contact the lifter 17. When the coil 3 reaches the rewind position, the coil 3 is lowered onto the cradle roll 20, and the hook 17f is retracted and removed from the coil 3.
(4) Then, as shown in FIG.4 (C), the lifter 17 is moved to a standby position, and the heat panel 18 is made to approach a coil end surface.
(5) With this, the transfer of the coil 3 is completed, the peeler 21 is operated, and the rewinding of the coil 3 is started.
(6) At the same time, when starting winding of the coil 3, as shown in FIGS. 2 (A) and 4 (C), the cradle roll 7 is retracted, the apron 4 is raised and mounted on the mandrel 2, The wrapper roll 6r is brought into contact with the mandrel 2, the transport roll 8 is switched to the guide position, and the rolled material 1 is wound around the mandrel 2.
[0027]
Hereinafter, when the coil 3 is continuously wound and rewound, the operations (1) to (6) may be repeated.
[0028]
According to the coil winding / rewinding apparatus of the present invention described above, the winding and unwinding of the coil 3 are completely separated, and the lifter 17 is used for the transfer of the coil 3. A device such as a transfer mandrel that obstructs the heating of both end surfaces is not necessary, and a mandrel and a wrapper that obstruct the heating of both end surfaces of the coil 3 are also eliminated by rewinding without a so-called core. Further, by providing the peeler 21 on the rail 16 of the lifter 17, the heat panel 18 and the heat panel 18 sufficient to keep the coil 3 heated without making the peeler that obstructs keeping the top surface of the coil 3 unnecessary is unnecessary. A heat cover 19 can be provided. Furthermore, by using the coil winding device of the present invention as the winding device 14, it is possible to eliminate a wrapper or a peeler that obstructs the heating of both end faces of the coil 3 during winding, so that the coil 3 can be maintained. A heat panel 18 and a heat cover 19 sufficient to heat can be provided. Accordingly, the coil 3 can be kept heated even during the winding operation that is completed in a relatively short time, and the temperature drop of the coil 3 can be suppressed throughout the entire operation from winding to unwinding of the coil 3.
[0029]
Further, in the coil winding / rewinding device described above, an intermediate heat station may be provided at an intermediate portion between the coil winding device 14 and the coil unwinding device 15. Although not shown in the drawing, this intermediate heat station is composed of a heat panel, a heat cover, a cradle roll, and the like, and waits while holding the heating time between coil winding and rewinding in the intermediate heat station. It is for making it happen. By providing such an intermediate heat station, even if a waiting time occurs between the winding and unwinding of the coil, the temperature of the coil is lowered by heating both end faces and the surface of the coil at the intermediate heat station. Further, by sequentially moving the coil, a series of operations from winding to unwinding of the coil can be performed continuously, and an efficient operation can be performed.
[0030]
It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present invention.
[0031]
【The invention's effect】
According to the coil winding device and the coil winding / rewinding device of the present invention described above, the coil can be kept heated even during the winding operation that is completed in a relatively short time. That is, it is possible to eliminate a wrapper or a peeler that interferes with heating both end faces of the coil during winding, and it is possible to provide a heat panel and a heat cover sufficient to keep the coil heated. Moreover, since it winds up using a mandrel, it can wind up at high speed and can perform stable winding even if it is a thin rolled material. Furthermore, since the winding operation can be performed with high accuracy, the number of finishing stands installed downstream of the hot rolling line can be reduced, and it can also be used as an accumulator at the time of continuous bar joining. , Etc. have excellent effects.
[Brief description of the drawings]
FIG. 1 is a side view of a coil winding device of the present invention.
FIGS. 2A and 2B are diagrams for explaining the operation of the coil winding device of the present invention, in which FIG. 2A shows a winding start time, FIG. 2B shows a winding completion time, and FIG. 2C shows a pass-through time;
FIG. 3 is a side view showing an embodiment of the coil winding / rewinding device of the present invention.
4 is a diagram for explaining the operation of the coil winding / rewinding device shown in FIG. 3, in which (A) shows the start of transfer, (B) shows the completion of transfer, and (C) shows the waiting time. Yes.
FIG. 5 is a view showing a coil winding device using a conventional mandrel.
FIG. 6 is a diagram schematically showing hot rolling equipment for performing finish rolling after rough rolling.
[Explanation of symbols]
1 Rolled material
2 Mandrels
3 coils
4 Aprons
5 Apron movable device
6 Wrapper
6r wrapper roll
6a Wrapper arm
6b Rotating shaft
7 Cradle roll
7a Support member
8 Transport roll
8s The most downstream transport roll
8g guide
9 Apron opening / closing mechanism (actuator)
10 Apron lifting mechanism (actuator)
11 Apron support member
12 Connecting members
13 Guide roll
14 Coil winder
15 Coil unwinding device
16 rails
17 Lifter
17w wheel
17t bogie
17a Actuator for movement
17m motor
17n Motor support member
17f hook
17c Lifting actuator
18 Heat panel
19 Heat cover
20 Cradle Roll
21 Peeler
22 Peeler support member
23 Wrapper
23r wrapper roll
24 peeler

Claims (7)

After the hot-rolled material is roughly rolled, the coil is wound into a coil shape using a mandrel at the winding position, the coil is transferred from the winding position to the rewinding position, and finish-rolled while being rewound at the rewinding position. In the coil winding device provided on the hot rolling line,
An apron that covers the entire width along the circumferential surface of a part of the mandrel in the circumferential direction at the start of winding of the coil, and an apron that supports the coil at the tip when the winding of the coil is completed,
An apron movable device for moving the apron closer to or away from the peripheral surface of the mandrel;
A wrapper for bringing a wrapper roll into contact with the top of the mandrel;
A cradle roll that supports the coil after the mandrel is removed;
A transport roll for guiding the hot-rolled material after the rough rolling to a mandrel;
A heat panel which is provided on both sides of the winding position so as to face the coil end faces, and heats both end faces;
A coil winding apparatus, comprising: a heat cover provided above the winding position and retaining heat of the heat panel.   The apron is respectively disposed on the upstream side and the downstream side of the mandrel, and each inner peripheral surface has a curved surface along the peripheral surface extending from the side part of the mandrel to the lower part with a certain gap. Furthermore, the coil winding apparatus of Claim 1 which has the curved surface which can support a coil in the front-end | tip part.   The coil winding device according to claim 1, wherein the apron movable device includes an apron opening / closing mechanism that opens and closes an upper end of the apron, and an apron lifting mechanism that lifts and lowers the apron.   The wrapper has a wrapper arm that supports both end portions of the wrapper roll, and the wrapper arm is bent at a middle portion with a convex portion up, and one end thereof can be rotated upstream of the winding position. The coil winding device according to any one of claims 1 to 3, wherein the coil winding device is fixed to the coil.   The coil winding device according to any one of claims 1 to 4, wherein the cradle roll is configured to be retracted obliquely downward so as not to interfere with the apron movable device.   The transport roll is configured to be switchable between a horizontal position for passing the rolled material through a winding position and a guide position for guiding the rolled material to a mandrel, and the most downstream transport roll includes the mandrel and The coil winding device according to any one of claims 1 to 5, wherein a guide for bridging the gap is provided. The coil winding device according to any one of claims 1 to 6, a coil unwinding device provided at the unwinding position, and a coil for transferring a coil from the coil winding device to the coil unwinding device. And a coil winding and rewinding device.

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