CN112533709A

CN112533709A - Reel device, rolling facility provided with same, and rolling method

Info

Publication number: CN112533709A
Application number: CN201980051933.4A
Authority: CN
Inventors: 吉川种浩; 鸟海贵大; 都筑哲平
Original assignee: JP Steel Plantech Co
Current assignee: JP Steel Plantech Co
Priority date: 2018-08-08
Filing date: 2019-06-10
Publication date: 2021-03-19
Also published as: KR102353674B1; JP7042190B2; TWI727353B; WO2020031492A1; TW202019802A; JP2020022986A; KR20210028676A

Abstract

A reel device for performing at least either one of winding and unwinding of a material to be rolled by a rolling mill, the reel device comprising: a main motor having a main drive shaft; a first spindle having a first rotational axis; a first rotating shaft coaxially coupled to the first spindle to rotate together with the first spindle; a first assist motor having a first assist drive shaft for rotating the first rotation shaft; a second mandrel; a second rotating shaft coaxially coupled to the second spindle to rotate together with the second spindle; a second assist motor having a second assist drive shaft for rotating the second rotation shaft; and a power transmission device configured to be able to switch the power source of the first spindle between the main motor and the first assist motor by selectively connecting the main drive shaft and the first assist drive shaft to the first rotation shaft, and configured to be able to switch the power source of the second spindle between the main motor and the second assist motor by selectively connecting the main drive shaft and the second assist drive shaft to the second rotation shaft, and fixed to a base.

Description

Reel device, rolling facility provided with same, and rolling method

Technical Field

The present invention relates to a reel device, and a rolling facility and a rolling method provided with the same.

Background

In a conventional reel device for winding and unwinding a material to be rolled by a rolling mill, there is a reel (carousel) type reel device in which 2 spindles supported by a revolving drum are used while being switched.

Documents of the prior art

Patent document

Patent document 1: japanese examined patent publication No. 60-047002

Patent document 2: japanese laid-open patent publication No. 7-108322

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 describes a reel device in which 2 spindles are driven by 1 main motor, but in this reel device, when one spindle is rotated by the main motor, the other spindle cannot be rotated by the main motor.

In contrast, in order to improve the operation efficiency, there is also a reel-type reel device including a first spindle coupled to a first rotation shaft, a second spindle coupled to a second rotation shaft, a first motor for rotating the first rotation shaft, and a second motor for rotating the second rotation shaft (patent document 2).

However, in this configuration, since both the first motor and the second motor need to have large outputs, the reel device is extremely large and the cost is high.

Further, the carousel-type reel device itself has a problem that the structure is complicated and the size of the reel device is large, which increases the cost.

The present invention has been made in view of the above problems, and an object thereof is to provide a reel device capable of suppressing cost by simplifying and compacting the device structure and also capable of improving productivity.

Means for solving the problems

A main aspect of the present invention for achieving the above object is a reel device for performing at least one of winding and unwinding of a material to be rolled by a rolling mill, the reel device including: a main motor having a main drive shaft; a first mandrel; a first rotating shaft coaxially coupled to the first spindle to rotate together with the first spindle; a first assist motor having a first assist drive shaft for rotating the first rotation shaft; a second mandrel; a second rotating shaft coaxially coupled to the second spindle to rotate together with the second spindle; a second assist motor having a second assist drive shaft for rotating the second rotation shaft; and a power transmission device configured to be able to switch the power source of the first spindle between the main motor and the first assist motor by selectively connecting the main drive shaft and the first assist drive shaft to the first rotation shaft, and configured to be able to switch the power source of the second spindle between the main motor and the second assist motor by selectively connecting the main drive shaft and the second assist drive shaft to the second rotation shaft, and fixed to a base.

Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

Effects of the invention

According to the present invention, it is possible to provide a reel device capable of improving productivity while simplifying and compacting the device structure.

Drawings

Fig. 1 is a schematic view of a rolling facility 1 according to a first embodiment.

Fig. 2 is a schematic plan view of the reel device 30 according to the first embodiment.

Fig. 3 is a timing chart for explaining the operation of the reel device 30.

Fig. 4 is a schematic view of a rolling facility 60 according to a second embodiment.

Detailed Description

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

A reel device for performing at least either one of winding and unwinding of a material to be rolled by a rolling mill, the reel device comprising: a main motor having a main drive shaft; a first mandrel; a first rotating shaft coaxially coupled to the first spindle to rotate together with the first spindle; a first assist motor having a first assist drive shaft for rotating the first rotation shaft; a second mandrel; a second rotating shaft coaxially coupled to the second spindle to rotate together with the second spindle; a second assist motor having a second assist drive shaft for rotating the second rotation shaft; and a power transmission device configured to be able to switch the power source of the first spindle between the main motor and the first assist motor by selectively connecting the main drive shaft and the first assist drive shaft to the first rotation shaft, and configured to be able to switch the power source of the second spindle between the main motor and the second assist motor by selectively connecting the main drive shaft and the second assist drive shaft to the second rotation shaft, and fixed to a base.

According to such a reel device, it is possible to achieve compactness and cost reduction of the reel device.

In the reel device, it is preferable that the power transmission device includes: a first clutch device having a function of switching a connection state between the main drive shaft and the first rotation shaft to a transmission state and a non-transmission state and a function of switching a connection state between the first auxiliary drive shaft and the first rotation shaft to a transmission state and a non-transmission state; and a second clutch device having a function of switching a connection state between the main drive shaft and the second rotary shaft to a transmission state and a non-transmission state and a function of switching a connection state between the second auxiliary drive shaft and the second rotary shaft to a transmission state and a non-transmission state.

According to such a reel device, a compact and cost-reduced reel device can be realized with a simple configuration.

Preferably, the rolling mill includes a rolling mill and the reel device is provided on at least one of an entry side, which is a side to which a coil of the material to be rolled before rolling by the rolling mill is supplied, and an exit side, which is a side to which the coil of the material to be rolled after rolling by the rolling mill is discharged.

According to such a rolling facility, the rolling facility can be made compact and cost-effective.

Preferably, the rolling method is a rolling method using a rolling facility including a rolling mill and the reel device, the reel device being provided on an outgoing side, which is a side from which a coil of a material to be rolled by the rolling mill is discharged, the rolling method including: rolling a material to be rolled by the first spindle in a state where a power source of the first spindle is provided as the main motor; switching the power source of the first spindle from the main motor to the first assist motor after decelerating the rotational speed of the main motor to a predetermined low rotational speed and adjusting the rotational speed of the first assist motor to the low rotational speed; cutting a leading end portion of a rolled material wound around the first mandrel in a state where the first mandrel is rotating at the low rotation speed; detaching and discharging a coil of a rolled material wound by the first mandrel from the first mandrel; switching the power source of the second spindle from the second assist motor to the main motor after adjusting the rotation speed of the second assist motor to the low rotation speed in a state where the power source of the second spindle is provided as the second assist motor; and starting the rolling of the material to be rolled by the second spindle in a state where the power source of the second spindle is the main motor and the second spindle is rotated at the low rotation speed.

According to such a rolling method, both spindles can be operated in parallel, and the rolled material can be continuously wound.

The rolling mill 1 according to the first embodiment is referred to as a rolling mill 1

The rolling facility 1 of the first embodiment is a facility that: the material to be rolled 3 is rolled by the continuous rolling mill 5, and the sheet-like material to be rolled 3 having a target thickness is wound and discharged for each coil by the winding device 30.

Fig. 1 is a schematic view of a rolling facility 1 according to a first embodiment. In fig. 1, some devices such as a coiler for feeding the rolled material 3 to the continuous rolling mill 5 are omitted for the purpose of easy understanding of the present invention (hereinafter, the description of the omitted devices is also omitted). The 3 directions orthogonal to each other are referred to as an X direction, a Y direction, and a Z direction, and the X direction and the Y direction are respectively directed to the horizontal direction, and the Z direction is directed to the vertical direction. In fig. 1, the lateral direction of the paper surface is referred to as the "X direction", the left side (right side) of the paper surface is referred to as the "downstream (upstream)", the longitudinal direction of the paper surface is referred to as the "Z direction", and the upper side (lower side) of the paper surface is referred to as the "up (down)".

As shown in fig. 1, the rolling facility 1 of the first embodiment includes a continuous rolling mill 5, pinch rolls 10, a cutting machine 20, a guide 25, a winding shaft device 30, a belt wrapper 50, and a control unit 55. The continuous rolling mill 5, the pinch roll 10, the cutter 20, the guide 25, the winding device 30, and the belt wrapper 50 are provided in this order from the upstream side. The control unit 55 is shown only as a connection line with the reel device 30 for simplicity, but in the present embodiment, it has a function of controlling the entire rolling mill 1.

The continuous rolling mill 5 is a device for rolling the material 3 to be rolled, and has 5 stands. These racks are arranged in the order of the first rack 5a, the second rack 5b, the third rack 5c, the fourth rack 5d, and the fifth rack 5e from the upstream side.

Each of the first to fifth stands 5a to 5e has a pair of upper and lower rolling rolls 5w and a pair of upper and lower backup rolls 5u, and the material 3 to be rolled is pinched and rolled by the respective rolling rolls 5 w. That is, the sheet-like material to be rolled 3 before rolling is fed to the continuous rolling mill 5 and is rolled in sequence by the first to fifth stands 5a to 5e, and after rolling at the fifth stand 5e, that is, after rolling by the continuous rolling mill 5, the sheet-like material to be rolled is fed from the continuous rolling mill 5 as the material to be rolled 3 having a target sheet thickness.

The rolled material 3 carried out of the continuous rolling mill 5 is carried on the carrying path, carried in the order of the pinch roll 10 → the cutter 20 → the guide 25 → the reel device 30, and wound by the reel device 30 for each coil. The pinch rolls 10 are a pair of upper and lower rolls, and are devices for sandwiching the material to be rolled 3 with a constant pressure.

The cutting machine 20 is a device for cutting the continuous sheet-like rolled material 3 so that the length of the rolled material 3 wound by the winding device 30 per 1 coil becomes a predetermined length. The cutting machine 20 includes a pair of upper and lower rolls 20a and a pair of upper and lower cutting blades 20b (upper and lower blades) having a width larger than the width of the material 3 to be rolled in the width direction of the material 3 to be rolled (direction penetrating the paper surface in fig. 1).

The cutting blade 20b is provided on the outer peripheral portion of the drum 20a such that a cutting portion (a portion where the upper blade and the lower blade are engaged) for cutting the material to be rolled 3 protrudes outward in the outer diameter direction of the drum 20a and the cutting portion faces (is engaged) with each other by the rotation of the drum 20 a. That is, the cutting machine 20 cuts the material 3 to be rolled transversely in the width direction by rotating the drum 20a and engaging the cutting blades 20 b.

Therefore, the rolled material 3 cut by the cutting machine 20 is cut into the upstream rolled material 3 and the downstream rolled material 3, the downstream cut end portion becomes the tail end portion of the coil of the rolled material 3 currently wound, and the upstream cut end portion becomes the start end portion of the coil of the rolled material 3 next wound.

The guide 25 is a device for guiding the leading end of the web to the first spindle 31a or the second spindle 32 a. The guide portion 25 is supported to be rotatable about a rotation axis in a direction passing through the paper surface.

That is, when the guide portion 25 rotates counterclockwise from the state shown in fig. 1 and guides the leading end portion of the roll material to the lower side by the lower surface (in other words, when the leading end of the rotating guide portion 25 contacts the leading end portion of the roll material and pushes down the leading end portion to change the direction of the leading end portion), the leading end portion of the roll material is guided to the first spindle 31 a. When the guide portion 25 is in the state shown in fig. 1, the leading end of the roll is guided to the second spindle 32 a.

The belt wrapper 50 is a device for fixing the leading end portion of the web to the first spindle 31a and the second spindle 32a of the winding device 30, and is provided with respect to each of the first spindle 31a and the second spindle 32 a. Further, for the spindle on standby, the belt wrapper 50 stands by in a ready state (a state shown by the belt wrapper 50 provided for the second spindle 32a in fig. 1).

Therefore, when the rolled material 3 is cut by the cutting machine 20 in the state shown in fig. 1, the tail end portion of the coil cut into the downstream side is wound as it is by the first mandrel 31a currently wound, and the leading end portion of the coil cut into the upstream side is guided upward by the guide portion 25 and guided to the second mandrel 32a in standby.

Then, the start end of the coil guided to the second mandrel 32a on standby is pressed against the second mandrel 32a by the belt wrapper 50, and the second mandrel 32a starts winding the rolled material 3 quickly. That is, the winding device 30 can continuously wind the rolled material 3 without stopping the feeding of the rolled material 3. That is, the rolling mill 1 according to the first embodiment can continuously roll the material to be rolled 3 without stopping the rolling of the material to be rolled 3.

The reel device 30 of the first embodiment is referred to as a reel device

The spool device 30 according to the first embodiment will be described with reference to fig. 2. Fig. 2 is a schematic plan view of the reel device 30 according to the first embodiment. In fig. 2, the lateral direction of the paper surface is referred to as the "X direction", the left side (right side) of the paper surface is referred to as the "downstream (upstream)", the longitudinal direction of the paper surface is referred to as the "Y direction", and the upper side (lower side) of the paper surface is referred to as the "back side (near front)".

As described above, the reel device 30 according to the first embodiment is provided as a coiler for the rolled material 3. The reel device 30 includes a first spindle 31a, a second spindle 32a, a main motor 35, a first assist motor 36, a second assist motor 37, and a power transmission device 40.

The first spindle device 31 and the second spindle device 32 are arranged in such a way that the first spindle device 31 is arranged on the upstream side and the second spindle device 32 is arranged symmetrically to each other on the downstream side with respect to the main motor 35. That is, the first spindle device 31 and the second spindle device 32 are a pair of spindle devices provided symmetrically with respect to the main motor 35, and have mutually identical structures. Therefore, the first spindle device 31 of the first spindle device 31 and the second spindle device 32 having the same configuration will be mainly described below as an example, and the description of the second spindle device 32 will be omitted as appropriate.

The first spindle device 31 (second spindle device 32) includes a first spindle 31a (second spindle 32a) rotatably supported by the first spindle support portion 31c (second spindle support portion 32c), a first rotating shaft 31b (second rotating shaft 32b) rotatably supported by the first rotating shaft support portion 31d (second rotating shaft support portion 32d), a first expansion/contraction cylinder 31f (second expansion/contraction cylinder 32f) connecting the first spindle 31a (second spindle 32a) and the first rotating shaft 31b (second rotating shaft 32b), and a first base 31e (second base 32e) fixedly provided with the first spindle support portion 31c (second spindle support portion 32 c).

The first mandrel 31a (second mandrel 32a) is a rotating body having a substantially axial shape for winding the rolled material 3 in a rolled sheet shape in a coil shape, and is provided so as to be rotatable in the direction along the Y direction as an axial direction.

The first mandrel 31a is a portion around which the material to be rolled 3 is wound in the first mandrel device 31, and is positioned on the front side of the first mandrel device 31. The first spindle 31a is rotatably supported by a first spindle support portion 31c, and the first spindle support portion 31c is fixed to the first base 31 e.

The first rotation shaft 31b is located on the rear side of the first spindle 31a, and is rotatably supported by a first rotation shaft support portion 31d so as to penetrate through a power transmission device 40 described later in the Y direction. The first rotating shaft 31b is coupled to the first spindle 31a coaxially therewith via a coupling and a first expansion/contraction cylinder 31f so as to rotate together with the first spindle 31a, and rotates by receiving power from a power source.

The first expansion and contraction cylinder 31f is a device for changing the shaft diameter of the first mandrel 31a when the rolled material 3 is loaded onto and unloaded from the first mandrel 31 a.

The main motor 35 is a power source for winding the material to be rolled 3 by the first spindle 31a (second spindle 32a), and the main motor 35 of the first embodiment has an output of 2200 kW.

The main motor 35 includes a motor 35a and a main drive shaft 35b rotatably supported by a main drive shaft support portion 35c and having a main drive shaft gear 35 d. The motor 35a is provided such that a motor drive shaft, which is a drive shaft thereof, rotates about a direction along the Y direction as a rotation axis, and is provided at a position further to the rear side than the power transmission device 40 so that a coupling portion with the main drive shaft 35b faces the front side.

The main drive shaft 35b is a drive shaft for transmitting power of the motor 35a, and one end portion (the end portion on the back side) is coupled to the motor drive shaft via a coupling or the like so as to rotate coaxially with the motor drive shaft. The main drive shaft 35b extends from a joint with the motor drive shaft to the front side of the power transmission device 40, and is rotatably supported by the main drive shaft support portion 35 c.

A main drive shaft gear 35d is fixed to the front side of the main drive shaft 35b in the power transmission device 40, and the main drive shaft gear 35d rotates in accordance with the rotation of the main drive shaft 35 b. A first idler gear 42a and a second idler gear 42b, which will be described later, are engaged with the main drive shaft gear 35d, and when the main drive shaft gear 35d rotates, the first idler gear 42a and the second idler gear 42b rotate. That is, the power of the main motor 35 is transmitted to the first idler gear 42a and the second idler gear 42 b.

The first assist motor 36 is a motor for rotating the first spindle 31a, and the second assist motor 37 is a motor for rotating the second spindle 32 a. The first assist motor 36 and the second assist motor 37 are provided symmetrically on the upstream side and the downstream side with respect to the main motor 35, and have the same configuration. Therefore, the first assist motor 36 of the first assist motor 36 and the second assist motor 37 having the same configuration is mainly described below as an example, and the description of the second assist motor 37 is appropriately omitted.

The first auxiliary motor 36 (second auxiliary motor 37) is a power source for performing the winding preparation and the coil discharge operation of the rolled material 3 by the first mandrel 31a (second mandrel 32 a). Therefore, the first assist motor 36 (second assist motor 37) of the first embodiment has an output of 75kW, unlike the main motor 35 that requires a large output. That is, the first assist motor 36 (second assist motor 37) is a smaller motor than the main motor 35.

The first assist motor 36 (second assist motor 37) includes a first small-sized motor 36a (second small-sized motor 37a) and a first assist drive shaft 36b (second assist drive shaft 37b) rotatably supported by a first assist drive shaft support portion 36c (second assist drive shaft support portion 37c) and having a first assist drive shaft gear 36d (second assist drive shaft gear 37 d).

The first small-sized motor 36a is provided such that a small-sized motor drive shaft, which is a drive shaft thereof, rotates about a direction along the Y direction as a rotation axis, and is provided at a position further to the rear side than the power transmission device 40 such that a coupling portion with the first auxiliary drive shaft 36b faces the front side.

The first assist drive shaft 36b is a drive shaft for transmitting power of the first small motor 36a, and one end portion (the end portion on the rear side) and the small motor drive shaft are fixed by a coupling or the like so as to rotate coaxially with the small motor drive shaft. The first assist drive shaft 36b extends from a joint with the small motor drive shaft to the inside of the power transmission device 40, and is rotatably supported by the first assist drive shaft support portion 36 c.

A first auxiliary drive shaft gear 36d is fixed to the other end (the end on the near side) of the first auxiliary drive shaft 36b located on the far side in the power transmission device 40, and the first auxiliary drive shaft gear 36d rotates in accordance with the rotation of the first auxiliary drive shaft 36 b. A first assist clutch gear 44a, which will be described later, is engaged with the first assist drive shaft gear 36d, and when the first assist drive shaft gear 36d rotates, the first assist clutch gear 44a rotates. That is, the power of the first assist motor 36 is transmitted to the first assist clutch gear 44 a.

The power transmission device 40 has a function of selectively connecting the main drive shaft 35b and the first assist drive shaft 36b (second assist drive shaft 37b) to the first rotation shaft 31b (second rotation shaft 32b), and is configured to be able to switch the power source of the first spindle 31a (second spindle 32a) between the main motor 35 and the first assist motor 36 (second assist motor 37).

In the power transmission device 40, the mechanism for transmitting power to the first spindle 31a and the mechanism for transmitting power to the second spindle 32a have the same configuration. Therefore, hereinafter, a mechanism for transmitting power to the first spindle 31a will be mainly described as an example, and a description of a mechanism for transmitting power to the second spindle 32a will be appropriately omitted.

The power transmission device 40 includes a first idler gear 42a (second idler gear 42b), a first main clutch gear 43a (second main clutch gear 43b), a first assist clutch gear 44a (second assist clutch gear 44b), a first clutch device 45a (second clutch device 45b), and a substantially rectangular power transmission unit base 41 in which these gears and clutch devices are housed and fixed to a base such as a floor surface on which the spool device 30 is provided. That is, the power transmission device 40 is fixed to the base via the power transmission unit base 41.

The first idler gear 42a is supported by the power transmission unit base 41 so as to be rotatable about a rotation axis in the Y direction while meshing with the main drive shaft gear 35d and the first main clutch gear 43 a. That is, the first idler gear 42a is rotated by the rotation of the main drive shaft gear 35d (main drive shaft 35b), and the first main clutch gear 43a is rotated by the rotation. That is, the first idler gear 42a transmits the power of the main motor 35 to the first main clutch gear 43 a.

The first main clutch gear 43a is a gear that is rotated by the power of the main motor 35, and is provided on the front side inside the power transmission device 40 so as to rotate coaxially with the first rotation shaft 31b via a bearing. That is, the rotation of the first main clutch gear 43a is not directly transmitted to the first rotary shaft 31b because it passes through the bearing.

Therefore, the first main clutch gear 43a has a connection portion with a first clutch device 45a described later, and in a state where the first main clutch gear 43a and the first clutch device 45a are connected, the rotation of the first main clutch gear 43a is transmitted to the first rotation shaft 31b via the first clutch device 45 a.

The first assist clutch gear 44a is a gear that is rotated by the power of the first assist motor 36, and is provided on the rear side inside the power transmission device 40 so as to rotate coaxially with the first rotation shaft 31b via a bearing. That is, the rotation of the first auxiliary clutch gear 44a is not directly transmitted to the first rotation shaft 31b through the bearing.

Therefore, the first assist clutch gear 44a has a connection portion with the first clutch device 45a, and in a state where the first assist clutch gear 44a and the first clutch device 45a are connected, the rotation of the first assist clutch gear 44a is transmitted to the first rotation shaft 31b via the first clutch device 45 a.

The first clutch device 45a has a function of switching the connection state between the main drive shaft 35b and the first rotation shaft 31b to a transmission state (a state of being connected to the first main clutch gear 43 a) and a non-transmission state (a state of not being connected to the first main clutch gear 43 a), and a function of switching the connection state between the first assist drive shaft 36b and the first rotation shaft 31b to a transmission state (a state of being connected to the first assist clutch gear 44 a) and a non-transmission state (a state of not being connected to the first assist clutch gear 44 a).

The first clutch device 45a is a rotating body that rotates coaxially with the first rotating shaft 31b, and is fixed to the first rotating shaft 31b in the circumferential direction by a fixing means 46a formed of a key and a key groove. That is, the first rotation shaft 31b rotates in accordance with the rotation of the first clutch device 45 a.

In the fixing unit 46a, the key and the key groove are fitted with a gap to the extent that the first clutch device 45a and the first rotating shaft 31b can slide relative to each other in the axial direction, and the first clutch device 45a can move in the axial direction of the first rotating shaft 31 b. The first clutch device 45a provided between the first main clutch gear 43a and the first assist clutch gear 44a is movable to a position in contact with the first main clutch gear 43a on the front side in the axial direction of the first rotating shaft 31b, and movable to a position in contact with the first assist clutch gear 44a on the rear side in the axial direction of the first rotating shaft 31 b.

The first clutch device 45a has a connection portion to be connected to each of the first main clutch gear 43a and the first assist clutch gear 44a, and can be connected to only one of the first main clutch gear and the first assist clutch gear at a position where they are in contact with each other.

That is, when the first clutch device 45a is connected to the first main clutch gear 43a (in the state shown in FIG. 2), the rotation of the main drive shaft 35b rotated by the power of the main motor 35 is transmitted in the order of the main drive shaft gear 35d → the first idler gear 42a → the first main clutch gear 43a → the first clutch device 45a → the first rotation shaft 31b → the first spindle 31a to rotate the first spindle 31a, when the first clutch device 45a is connected to the first assist clutch gear 44a, the rotation of the first assist drive shaft 36b rotated by the power of the first assist motor 36 is transmitted in the order of the first assist drive shaft gear 36d → the first assist clutch gear 44a → the first clutch device 45a → the first rotation shaft 31b (first spindle 31a) to rotate the first spindle 31 a.

< < < < < operation of the reel device 30 in the first embodiment > >)

The winding device 30 of the first embodiment can continuously wind the material to be rolled 3 without stopping the winding of the material to be rolled 3. This is achieved by the control section 55 continuously coiling the rolled material 3 using the first mandrel 31a and the second mandrel 32a alternately.

Hereinafter, the operation of the reel device 30 according to the first embodiment, that is, the operation of the reel device 30 in the rolling method in which the rolling is performed by the rolling facility 1 in which the continuous rolling mill 5 is installed and the reel device 30 is installed on the exit side (downstream side) of the continuous rolling mill 5 will be described with reference to fig. 1 to 3. Fig. 3 is a timing chart for explaining the operation of the reel device 30.

In fig. 3, the vertical axis shows an example of a normal coiling speed at a speed of 1200mpm (meter minute) indicating a coiling speed of the rolled material 3 (the peripheral speed of the coil on the mandrel is the feeding speed of the rolled material 3), and the motor is rotated at a rotation speed corresponding to the coiling speed. The speed of 150mpm represents an example of the winding speed in a state where the motor is rotating at a predetermined low rotation speed. In fig. 3, "the rotation speed of the main motor (when the first spindle is driven)", "the rotation speed of the first assist motor", "the rotation speed of the main motor (when the second spindle is driven)", "the rotation speed of the second assist motor" is indirectly shown by the winding speed.

The horizontal axis of fig. 3 represents the passage of time, and the leftmost point on the horizontal axis (point intersecting the vertical axis) is in the state shown in fig. 1, and the time passes as the right goes. The periods separated by the vertical dotted line are indicated by the letters a to E, respectively. Hereinafter, the state shown in fig. 1 is set as the initial state, and the operation of the reel device 30 will be described in order with reference to table 1 below.

[ Table 1]

TABLE 1

(period A)

In the period a, the first mandrel 31a winds the rolled material 3 in a sheet form after being rolled in a coil form in the state shown in fig. 1. That is, the first mandrel 31a winds the material 3 at a winding speed of 1200mpm in a state where the power source of the first mandrel 31a is set to the main motor 35. This is a state in which the first clutch device 45a shown in fig. 2 is connected to the first main clutch gear 43 a. In other words, the connection state between the main drive shaft 35b and the first rotation shaft 31b is a transmission state, and the connection state between the first auxiliary drive shaft 36b and the first rotation shaft 31b is a non-transmission state.

On the other hand, the second spindle 32a shown in fig. 1 is stopped and on standby. At this time, the second clutch device 45b shown in fig. 2 is connected to the second assist clutch gear 44 b. That is, in this state, the second clutch device 45b is located on the inner side of the position of the second clutch device 45b shown in fig. 2. In other words, the connection state between the main drive shaft 35b and the second rotation shaft 32b is in the non-transmission state, and the connection state between the second auxiliary drive shaft 37b and the second rotation shaft 32b is in the transmission state.

When the rolled material 3 wound around the first mandrel 31a reaches a predetermined length, the rolled material 3 is cut by the cutting machine 20, but the control unit 55 controls the operation of the winding device 30 so that the winding of the rolled material 3 does not stop due to the cutting. That is, the control unit 55 switches the power sources of the first mandrel 31a and the second mandrel 32a so as to continuously wind the rolled material 3, and changes the winding of the rolled material 3 from the first mandrel 31a to the second mandrel 32 a.

More specifically, when the rolled material 3 wound around the first mandrel 31a approaches a predetermined length (before reaching the predetermined length), the controller 55 reduces the winding speed of the first mandrel 31a to 150 mpm. In parallel with this deceleration, the control unit 55 drives the first assist motor 36 to accelerate the first assist clutch gear 44a to a rotation speed of 150 mpm.

That is, the control unit 55 reduces the rotation speed of the main motor 35 to 150mpm and adjusts the rotation speed of the first assist motor 36 to the rotation speed of the main motor 35 (the rotation speeds of both need not be completely matched but may be approximately matched). Therefore, power is transmitted as the first auxiliary drive shaft 36b → the first auxiliary drive shaft gear 36d → the first auxiliary clutch gear 44a, and the first auxiliary clutch gear 44a rotates at a rotational speed of 150 mpm.

(period B)

In the period B, the control unit 55 first moves the first clutch device 45a to a position in contact with the first assist clutch gear 44a and switches the power source of the first spindle 31a in a state where the first assist clutch gear 44a is rotating at a rotational speed of 150 mpm. That is, the control unit 55 releases the connection (OFF) between the first clutch device 45a and the first main clutch gear 43a, connects (ON) the first clutch device 45a and the first assist clutch gear 44a, and changes the power transmission to the first assist clutch gear 44a → the first clutch device 45a → the first rotating shaft 31b (first spindle 31 a). That is, the control unit 55 switches the power source of the first spindle 31a from the main motor 35 to the first assist motor 36. At this time, the connection state between the main drive shaft 35b and the first rotation shaft 31b becomes a non-transmission state, and the connection state between the first auxiliary drive shaft 36b and the first rotation shaft 31b becomes a transmission state.

After the power source of the first mandrel 31a is switched to the first assist motor 36, the control unit 55 controls the rolled material 3 wound around the first mandrel 31a to have a predetermined length (to be cut into a predetermined length by the cutting machine 20), and in this state, the rolled material 3 is cut by the cutting machine 20. That is, the tail end portion of the rolled material 3 wound around the first mandrel 31a is cut by the cutting machine 20 while the first mandrel 31a is rotated at 150mpm by the first auxiliary motor 36.

On the other hand, the second spindle 32a that is stopped starts to rotate by the second assist motor 37 in parallel with the switching of the power source of the first spindle 31 a. That is, the control unit 55 accelerates the second assist motor 37 to 150mpm in a state where the second clutch device 45b is connected to the second assist clutch gear 44b (i.e., in a state where power is transmitted as the second assist drive shaft 37b → the second assist drive shaft gear 37d → the second assist clutch gear 44b → the second clutch device 45b → the second rotation shaft 32b (the second spindle 32 a)). That is, the controller 55 sets the rotation speed of the second assist motor 37 to a predetermined low rotation speed (150 mpm in the present embodiment). At this time, the connection state between the main drive shaft 35b and the second rotation shaft 32b is still a non-transmission state, and the connection state between the second auxiliary drive shaft 37b and the second rotation shaft 32b is still a transmission state.

(period C)

In the period C, the controller 55 first moves the second clutch device 45b to a position where it contacts the second main clutch gear 43b to switch the power source of the second spindle 32 a. That is, the control unit 55 releases the connection (OFF) between the second clutch device 45b and the second assist clutch gear 44b, connects (ON) the second clutch device 45b and the second main clutch gear 43b, and changes the power transmission to the main drive shaft gear 35d → the second idle gear 42b → the second main clutch gear 43b → the second clutch device 45b → the second rotary shaft 32b (second spindle 32 a). That is, the control unit 55 switches the power source of the second spindle 32a from the second assist motor 37 to the main motor 35. At this time, the connection state between the main drive shaft 35b and the second rotation shaft 32b is a transmission state, and the connection state between the second auxiliary drive shaft 37b and the second rotation shaft 32b is a non-transmission state.

The control unit 55 controls the start end of the coil to reach the second spindle 32a after the power source of the second spindle 32a is switched to the main motor 35, and in this state, the belt wrapper 50 fixes the start end of the coil to the second spindle 32 a.

After that, the controller 55 rapidly starts the coiling of the rolled material 3 by the second mandrel 32 a. That is, the rolling of the material to be rolled 3 is started by the second spindle 32a in a state where the power source of the second spindle 32a is the main motor 35 and the second spindle 32a rotates at 150 mpm.

Then, the controller 55 accelerates the rotation speed of the second mandrel 32a to 1200mpm to wind the material to be rolled 3, and when the material to be rolled 3 wound around the second mandrel 32a approaches a predetermined length, the controller performs the same control on the second mandrel 32a and the first mandrel 31a as the control on the first mandrel 31a and the second mandrel 32a in the period a. That is, the control unit 55 realizes continuous winding of the rolled material 3 by winding the rolled material 3 using the first mandrel 31a and the second mandrel 32a alternately.

On the other hand, after the control unit 55 winds the material to be rolled 3 around the first mandrel 31a to the end, the first mandrel 31a is minutely moved by the first auxiliary motor 36 to perform an auxiliary operation (discharge of the coil) for detaching and discharging the coil of the material to be rolled 3 wound around the first mandrel 31a from the first mandrel 31 a. Therefore, at this time, the connection state between the main drive shaft 35b and the first rotation shaft 31b is still set to the non-transmission state, and the connection state between the first auxiliary drive shaft 36b and the first rotation shaft 31b is still set to the transmission state.

Thereafter, the periods D and E are continued, but the switching operation of the clutch device in these periods is the same as that in the period B, C except for the first and second switching operations, and therefore, the detailed description thereof is omitted.

In the second embodiment, the present invention is not limited to the specific example

Next, a second embodiment will be described with reference to fig. 4. Fig. 4 is a view corresponding to fig. 1, and is a schematic view of a rolling facility 60 according to a second embodiment.

In fig. 4, some devices such as a device for winding the rolled material 3 into a coiler are omitted for the purpose of easy understanding of the present invention (hereinafter, the description of the omitted devices is also omitted). In fig. 4, the lateral direction of the paper surface is referred to as the "X direction", the left side (right side) of the paper surface is referred to as the "downstream (upstream)", the longitudinal direction of the paper surface is referred to as the "Z direction", and the upper side (lower side) of the paper surface is referred to as the "up (down)".

The first embodiment is different from the second embodiment in the following points: in the first embodiment, the reel device 30 is provided as a coiler on the exit side (downstream side) that is the side from which the coil of the material to be rolled 3 rolled by the continuous rolling mill 5 is discharged, but in the second embodiment, the reel device 30 is provided as a coiler on the entry side (upstream side) that is the side from which the coil of the material to be rolled 3 is fed before rolling by the reverse rolling mill 65.

As shown in fig. 4, the rolling facility 60 according to the second embodiment includes a reel device 30 functioning as a windup and a windup, a reverse rolling mill 65, a gauge 70, a strip press 80, and a windup, not shown. The reel device 30, the thickness measuring device 70, the strip press 80, the reverse rolling mill 65, and the outgoing-side take-up winder are provided in this order from the upstream side.

In the reel device 30 provided in the rolling facility 60 according to the second embodiment, the first mandrel 31a is used to assemble the coil stock of the material to be rolled 3 before rolling and to wind up the material to be rolled 3 when performing the first pass of rolling, and the second mandrel 32a is used to wind up and wind up the material to be rolled 3 on the entry side when performing the second pass or subsequent rolling.

The reversing rolling mill 65 is a device for rolling the material to be rolled 3, and includes a pair of upper and lower rolling rolls 65w and a pair of upper and lower backup rolls 65u, and the material to be rolled 3 is nipped and rolled by the rolling rolls 65 w. In the rolling mill 60 that performs rolling by the reversing rolling mill 65, the rolled material 3 is reciprocated between the reel device 30 and the delivery-side windup and windup machine (a device that performs winding and windup of the rolled material 3 on the delivery side of the reversing rolling mill 65) and the rolled material 3 passes through the reversing rolling mill 65 a plurality of times, thereby performing rolling of the rolled material 3a plurality of times.

That is, when the material to be rolled 3 is transported from the upstream side to the downstream side and rolled, the material to be rolled 3 is unwound using the first mandrel 31a in the first pass, the second mandrel 32a in the second pass and thereafter, and the unwinding is performed using the unwinding-side unwinding winder. Conversely, when the rolled material 3 is transported from the downstream side to the upstream side and rolled, the rolled material 3 is unwound using the exit-side winding and unwinding machine, and the winding is performed using the second mandrel 32 a.

The plate thickness measuring device 70 is a device for measuring the plate thickness of the material to be rolled 3, and detects the plate thickness of the material to be rolled 3 that reciprocates between the second mandrel 32a provided in the X direction on the conveying line of the material to be rolled 3 and the reversing rolling mill 65.

The strip press 80 is a device for rolling the rolled material 3 immediately before the reverse rolling mill 65 while holding the rolled material 3 with a slidable degree of pressure and maintaining tension necessary for rolling when the end of the rolled material 3 (the leading end of the coil of the rolled material 3 wound around the first mandrel 31a) is separated from the first mandrel 31a in the first pass of rolling. Thus, the strip press 80 is disposed immediately before the upstream side of the reverse rolling mill 65.

< < < < < operation of the reel device 30 in the second embodiment > >)

Hereinafter, the operation of the reel device 30 according to the second embodiment will be described with reference to fig. 2 and 4.

The state shown in fig. 4 represents the following state: the material 3 to be rolled is being paid out (paid out) from the first mandrel 31a, and one end portion (denoted by reference numeral E1 in fig. 4) of the material 3 to be rolled is not yet fixed to the delivery-side take-out coiler. That is, from the state shown in fig. 4, the one end portion of the rolled material 3 is further conveyed downstream to the outlet-side windup and uncoiling machine, the one end portion of the rolled material 3 is fixed to the outlet-side windup and uncoiling machine, and the rolled material 3 is rolled (so-called first-pass rolling) between the first mandrel 31a (uncoiling) and the outlet-side windup and uncoiling machine (coiling).

Therefore, in the power transmission device 40, the first clutch device 45a shown in fig. 2 is connected to the first main clutch gear 43a, and the first spindle 31a winds out the material to be rolled 3 by the power of the main motor 35.

On the other hand, the second spindle 32a shown in fig. 4 is in standby at a stop. That is, the second clutch device 45b is not connected to the second main clutch gear 43 b.

The first pass of rolling is performed until the other end portion (the end portion on the opposite side to the one end portion) of the material to be rolled 3 is separated from the first mandrel 31a as the unwinding machine and reaches the strip press 80. Then, the rolling after the second pass is performed by "moving the other end portion of the rolled material 3 that has reached the strip press 80 to the second mandrel 32a and fixing it to the second mandrel 32a, and reciprocating the rolled material 3 between the second mandrel 32a and the outlet-side windup.

Therefore, the transmission target of the power of the main motor 35 is switched from the first spindle 31a to the second spindle 32a during the period from the end of the first pass to the start of the second pass. Specifically, in the power transmission device 40, the first clutch device 45a and the first main clutch gear 43a are disconnected, and the second clutch device 45b and the second main clutch gear 43b are connected.

While the second and subsequent passes of rolling are being performed by the second mandrel 32a and the outlet-side windup winder, the first clutch device 45a and the first assist clutch gear 44a are connected to the power transmission device 40, and the first mandrel 31a is prepared for the next pass of rolling using the first assist motor 36 as a power source. That is, the coil of the material to be rolled 3 before rolling, which is to be rolled next, is attached to the first mandrel 31a, and one end of the coil of the material to be rolled 3 attached to the first mandrel 31a is conveyed to a position of an end bending device (a device for bending one end of the material to be rolled 3 so as to smoothly pass through a conveying line), which is not shown, and preparation for the next rolling is performed.

After the rolled material 3 is rolled to a target plate thickness between the second mandrel 32a and the discharge-side coiler, the rolled material 3 after rolling is coiled in the second mandrel 32a, and the rotation of both the first mandrel 31a and the second mandrel 32a is stopped. Then, the power source is changed for discharging the coil of the rolled material 3 after rolling at the second mandrel 32a, and the power source is changed for performing the first pass rolling of the next rolling at the first mandrel 31 a.

Specifically, in the power transmission device 40, the connection between the first clutch device 45a and the first assist clutch gear 44a is released and the first clutch device 45a and the first main clutch gear 43a are connected, and the connection between the second clutch device 45b and the second main clutch gear 43b is released and the second clutch device 45b and the second assist clutch gear 44b are connected.

In this state, the material 3 to be rolled is wound up by using the main motor 35 as a power source and is rolled in a first pass by the first mandrel 31a, and the material of the material 3 to be rolled is discharged by using the second auxiliary motor 37 as a power source by the second mandrel 32 a.

In this way, the first-pass rolling on the first mandrel 31a and the coil discharge of the material to be rolled 3 on the second mandrel 32a are performed in parallel. That is, when the first pass rolling of the first mandrel 31a is completed, the coil discharge of the material to be rolled 3 is completed at the second mandrel 32a, and the second mandrel 32a is on standby. Therefore, the material 3 is fixed to the second mandrel 32a quickly, and the rolling in the second and subsequent passes is performed smoothly.

In addition, unlike the first embodiment, since the first assist motor 36 (the second assist motor 37) is not used for driving the spindle for winding and unwinding, the first assist motor 36 (the second assist motor 37) can be smaller than the first assist motor 36 of the first embodiment (for example, a motor of about 11 kW).

The validity of the reel device 30 and the like according to the first and second embodiments is set as follows

As described above, the reel device 30 according to the first embodiment (second embodiment) is a reel device 30 that performs winding (unwinding and winding-unwinding) of the material to be rolled 3 rolled by the continuous rolling mill 5 (reverse rolling mill 65), and includes: a main motor 35 having a main drive shaft 35 b; the first spindle 31 a; a first rotating shaft 31b coaxially coupled to the first spindle 31a so as to rotate together with the first spindle 31 a; a first assist motor 36 having a first assist drive shaft 36b for rotating the first rotation shaft 31 b; a second spindle 32 a; a second rotation shaft 32b coaxially coupled to the second spindle 32a so as to rotate together with the second spindle 32 a; a second assist motor 37 having a second assist drive shaft 37b for rotating the second rotation shaft 32 b; and a power transmission device 40 configured to be able to switch the power source of the first spindle 31a between the main motor 35 and the first auxiliary motor 36 by selectively connecting the main drive shaft 35b and the first auxiliary drive shaft 36b to the first rotation shaft 31b, and configured to be able to switch the power source of the second spindle 32a between the main motor 35 and the second auxiliary motor 37 by selectively connecting the main drive shaft 35b and the second auxiliary drive shaft 37b to the second rotation shaft 32b, and the cover is fixed to the base. Thus, the downsizing and cost reduction of the reel device 30 can be achieved.

In a conventional turntable type reel device including a first motor for rotating the first rotation shaft 31b of the first spindle 31a and a second motor for rotating the second rotation shaft 32b of the second spindle 32a, both the first motor and the second motor require large motors. Therefore, the reel device is extremely large and the cost is increased.

For example, when a conventional carousel type coiler is used as the outlet-side coiler of the continuous rolling mill, since 2 motors require an output corresponding to the main motor 35, for example, 2200 × 2 — 4400kW is required.

On the other hand, when the reel device of the present invention is provided as the coiler on the outlet side of the continuous rolling mill (the first embodiment described above), the main motor 35 and the first auxiliary motor 36 (the second auxiliary motor 37) can be selectively connected and switched to the first spindle 31a (the second spindle 32a), so that the total of 2200+75+75 of the main motor 35, the first auxiliary motor 36, and the second auxiliary motor 37, which is the output of the electric motor of the reel device 30, becomes 2350 kW. That is, the reel device 30 can suppress the output of the motor as compared with the conventional reel device.

In addition, when a unwinder and an entrance-side coiler are provided as a conventional coiler and an entrance-side coiler on the entrance side of the reverse rolling mill, respectively, the electric motors of the unwinder and the entrance-side coiler, for example, require an output of 500kW for the unwinder and an output of 2000kW corresponding to the main motor 35 for the entrance-side coiler. In this case, an output of 500+ 2000-2500 kW is required.

In contrast, when the reel device of the present invention is provided as the entry-side and exit-side windups of the reverse rolling mill (the second embodiment described above), the total output of the motors of the reel device 30 becomes 2000+11+11 of the main motor 35, the first assist motor 36, and the second assist motor 37, which is 2022 kW. That is, the reel device 30 can suppress the output of the motor as compared with the conventional reel device.

In addition, the turntable type winder requires a revolving mechanism, and each member needs mechanical strength capable of withstanding the revolution. Therefore, the turntable type winder becomes a large-scale apparatus with a complicated structure, and the reel apparatus becomes large and the cost increases.

In contrast, in the first embodiment, the reel device 30 in which the power transmission device 40 is fixed to the base is a reel. Therefore, in the reel of the first embodiment, a revolving mechanism such as a turntable type reel is not required, and each member does not need to have strength capable of undergoing the revolution. That is, by using the reel device 30 as the reel device of the first embodiment, the reel device (the reel device) can be suppressed from becoming large and the weight can be reduced, and therefore, the reel device can be made compact and the cost can be suppressed.

Further, since the conventional reel device (unwinding device) provided on the entry side of the reversing rolling mill has an output of, for example, 500kW as described above and is smaller than the output of the main motor 35 according to the present invention, a sufficient back tension cannot be obtained in the first pass, and the rolled material 3 meanders. Further, since the output of the uncoiler is insufficient, the rolling speed of the material to be rolled 3 in the first pass is limited to, for example, 500mpm or less, which causes a problem of lowering productivity.

In contrast, in the second embodiment of the present invention, the first spindle 31a having the main motor 35 of 2200kW as a power source can be used for unwinding. Therefore, in the second embodiment, the rolling speed of the material to be rolled 3 of the first pass can be increased, and the meandering of the material to be rolled 3 of the first pass, which has conventionally occurred, can be suppressed, so that the productivity can be improved.

In the first and second embodiments, the power transmission device 40 includes: a first clutch device 45a having a function of switching a connection state between the main drive shaft 35b and the first rotation shaft 31b to a transmission state and a non-transmission state and a function of switching a connection state between the first auxiliary drive shaft 36b and the first rotation shaft 31b to a transmission state and a non-transmission state; and a second clutch device 45b having a function of switching the connection state between the main drive shaft 35b and the second rotation shaft 32b to a transmission state and a non-transmission state, and a function of switching the connection state between the second sub drive shaft 37b and the second rotation shaft 32b to a transmission state and a non-transmission state.

That is, in the power transmission device 40, switching between the main motor 35 and the first assist motor 36 (second assist motor 37) is performed by a clutch mechanism using the first clutch device 45a (second clutch device 45b), so that the compact and cost-reduced reel device 30 can be realized with a simple configuration.

Thus, according to the present invention, a reel device is provided which can achieve cost reduction by simplification and compactness of the device configuration and also can achieve improvement in productivity.

In the first embodiment (second embodiment), a rolling mill 1 (rolling mill 60) is provided with a continuous rolling mill 5 (reversing rolling mill 65) and a reel device 30, and the reel device 30 is provided on the exit side (entrance side, which is the side where a coil is supplied) that is the side where a coil of a material to be rolled 3 rolled by the continuous rolling mill 5 (reversing rolling mill 65) is discharged. That is, a rolling mill is provided with the reel device 30 on at least one of the exit side and the entrance side of the rolling mill.

Therefore, the rolling facility can be made compact and the cost can be suppressed, and the productivity can be improved.

In the first embodiment, a rolling method is provided in which rolling is performed using a rolling mill 1, the rolling mill 1 includes a continuous rolling mill 5 and a reel device 30, and the reel device 30 is provided on an exit side, which is a side from which a coil of a material to be rolled 3 rolled by the continuous rolling mill 5 is discharged, the rolling method including the steps of: the rolled material 3 is wound by the first mandrel 31a with the power source of the first mandrel 31a set as the main motor 35; switching the power source of the first spindle 31a from the main motor 35 to the first assist motor 36 after reducing the rotation speed of the main motor 35 to 150mpm and adjusting the rotation speed of the first assist motor 36 to 150 mpm; cutting the tail end of the rolled material 3 wound by the first mandrel 31a in a state where the first mandrel 31a rotates at 150 mpm; detaching and discharging the coil of the rolled material 3 wound by the first mandrel 31a from the first mandrel 31 a; after the rotational speed of the second assist motor 37 is adjusted to 150mpm in a state where the power source of the second spindle 32a is provided as the second assist motor 37, the power source of the second spindle 32a is switched from the second assist motor 37 to the main motor 35; and starting the rolling of the material to be rolled 3 by the second mandrel 32a in a state where the power source of the second mandrel 32a is set to the main motor 35 and the second mandrel 32a rotates at 150 mpm.

That is, according to this rolling method, since the main motor 35 is connected to the mandrel for performing the coiling and the sub-motor is connected to the mandrel for performing the operations of discharging the coil and preparing for the next coiling, the operations can be performed in parallel by both the mandrels, and the continuous coiling of the material to be rolled 3 can be realized.

Other embodiments are also possible

Although the reel device 30 of the present invention has been described above based on the above embodiment, the above embodiment of the present invention is intended to facilitate understanding of the present invention, and the present invention is not limited to the above embodiment. The present invention can be modified and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

In the above embodiment, the reel device 30 is provided on one of the entry side and the exit side of the rolling mill, but the present invention is not limited thereto. The reel device 30 may be provided on both the entry side and the exit side of the rolling mill.

In the above embodiment, the first spindle 31a (the second spindle 32a) is provided on the front side of the power transmission device 40, and the electric motor 35a of the main electric motor 35 and the first small electric motor 36a (the second small electric motor 37a) of the first assist electric motor 36 (the second assist electric motor 37) are provided on the rear side of the power transmission device 40, but the present invention is not limited thereto. For example, each may be provided on the front side of the power transmission device 40.

In the above embodiment, specific electric motor outputs such as the output "2200 kW" of the main motor 35 and the output "75 kW" of the first assist motor 36 and the second assist motor 37 are described, but these values are given as an example and are not limited thereto.

In the above embodiment, the usual coiling speed of the rolled material 3 is 1200mpm, and the predetermined low rotation speed is 150mpm, but these values are exemplified and not limited thereto.

In addition, the 4-roll rolling mill described in the above embodiment is given as an example, and the rolling mill provided in the rolling mill of the present invention is not limited to this, and may be a 6-roll rolling mill or a rolling mill of another type.

Description of the reference symbols

1 Rolling plant

3 rolled material

5 continuous rolling mill

5a first frame

5b second frame

5c third frame

5d fourth frame

5e fifth Rack

5u supporting roller

5w rolling roller

10 pinch roll

20 cutting machine

20a roller

20b cutting knife

25 guide part

30 reel device

31 first spindle arrangement

31a first mandrel

31b first rotation axis

31c first spindle support

31d first rotation axis supporting part

31e first substrate

31f first collapsible cylinder

32 second spindle arrangement

32a second mandrel

32b second axis of rotation

32c second spindle support

32d second rotation axis support part

32e second substrate

32f second expansion and contraction cylinder

35 main motor

35a motor

35b main drive shaft

35c Main drive shaft support

35d Main drive shaft Gear

36 first auxiliary motor

36a first small motor

36b first auxiliary drive shaft

36c first auxiliary drive shaft support part

36d first auxiliary drive shaft gear

37 second auxiliary motor

37a second small-sized motor

37b second auxiliary drive shaft

37c second auxiliary drive shaft support part

37d second auxiliary driving shaft gear

40 power transmission device

41 power transmission part base body

42a first idler gearwheel

42b second idler gearwheel

43a first main clutch gear

43b second Main Clutch Gear

44a first auxiliary clutch gear

44b second auxiliary clutch gear

45a first clutch device

45b second clutch device

50 belt wrapper

55 control part

60 rolling equipment

65 reverse rolling mill

65u supporting roller

65w rolling roller

70 plate thickness measuring device

80 strip press

Claims

1. A reel device for performing at least either one of winding and unwinding of a material to be rolled by a rolling mill, the reel device comprising:

a main motor having a main drive shaft;

a first mandrel;

a first rotating shaft coaxially coupled to the first spindle to rotate together with the first spindle;

a first assist motor having a first assist drive shaft for rotating the first rotation shaft;

a second mandrel;

a second rotating shaft coaxially coupled to the second spindle to rotate together with the second spindle;

a second assist motor having a second assist drive shaft for rotating the second rotation shaft; and

and a power transmission device configured to be able to switch the power source of the first spindle between the main motor and the first assist motor by selectively connecting the main drive shaft and the first assist drive shaft to the first rotation shaft, and configured to be able to switch the power source of the second spindle between the main motor and the second assist motor by selectively connecting the main drive shaft and the second assist drive shaft to the second rotation shaft, and fixed to a base.

2. The spool arrangement of claim 1,

the power transmission device includes:

a first clutch device having a function of switching a connection state between the main drive shaft and the first rotation shaft to a transmission state and a non-transmission state and a function of switching a connection state between the first auxiliary drive shaft and the first rotation shaft to a transmission state and a non-transmission state; and

and a second clutch device having a function of switching a connection state between the main drive shaft and the second rotary shaft to a transmission state and a non-transmission state and a function of switching a connection state between the second auxiliary drive shaft and the second rotary shaft to a transmission state and a non-transmission state.

3. A rolling facility is characterized by comprising:

a rolling mill; and

the spool arrangement of claim 1 or 2,

the reel device is provided on at least one of an entry side, which is a side on which a coil of the material to be rolled before rolling by the rolling mill is supplied, and an exit side, which is a side on which the coil of the material to be rolled after rolling by the rolling mill is discharged.

4. A rolling method for performing rolling using a rolling facility, the rolling facility comprising:

a rolling mill; and

the spool arrangement of claim 1 or 2,

the reel device is provided on the side of the rolled material rolled by the rolling mill, that is, on the exit side,

the rolling method is characterized by comprising the following steps:

rolling a material to be rolled by the first spindle in a state where a power source of the first spindle is provided as the main motor;

switching the power source of the first spindle from the main motor to the first assist motor after reducing the rotational speed of the main motor to a predetermined low rotational speed and adjusting the rotational speed of the first assist motor to the low rotational speed;

cutting a leading end portion of a rolled material wound around the first mandrel in a state where the first mandrel is rotating at the low rotation speed;

detaching and discharging a coil of a rolled material wound by the first mandrel from the first mandrel;

switching the power source of the second spindle from the second assist motor to the main motor after adjusting the rotation speed of the second assist motor to the low rotation speed in a state where the power source of the second spindle is provided as the second assist motor; and

and starting the rolling of the material to be rolled by the second spindle in a state where the power source of the second spindle is the main motor and the second spindle is rotated at the low rotation speed.