JPH1157851A - Coil unwinding method and device - Google Patents

Abstract

(57) [Problem] A step of processing a remaining coil of a preceding coil and a step of mounting a following coil on the same rewinding machine can be performed almost simultaneously, whereby a single winding can be performed. Provided is a method and an apparatus for rewinding a coil that can greatly reduce idle time by using a rewinding machine. A rewinding machine (12) movable between a rewinding position (A) and a standby position (B) horizontally moved in the axial direction from the rewinding position to a mandrel support side. A remaining coil extracting device 14 for holding the remaining coil 3 and extracting the remaining coil from the rewind position after the movement,
Coil car 1 for transporting trailing coil 2b to rewind position
6. a. After the rewinding of the preceding coil 2a is completed, the rewinding machine 12 is moved to the standby position B while leaving the remaining coils,
b. Next, the remaining coil is taken out from the rewind position to the take-out position C by the remaining coil take-out device 14, and at the same time, the trailing coil 2b is transported from the standby position D to the rewind position A by the coil car 16, c. Thereafter, the rewinding machine 12 is returned from the standby position B to the rewinding position A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for rewinding a coil supplied to a rolling facility or the like.

[0002]

2. Description of the Related Art FIG. 8 schematically shows a rolling line, in which (A) shows reverse rolling and (B) shows ordinary one-way rolling. In the reverse rolling of (A), the rolled material is not completely rewound from the coils 2 located on both sides of the reverse type rolling mill 1, but is reverse-rolled while leaving the last one or two turns. As shown in a, b, and c of (C), it is necessary to cut and leave the last one or two turns as a pop coil. In the normal rolling of (B), the coil is wound around a thin pipe (called a spool or a sleeve), and it is necessary to take the spool out of the line when the coil has been rewound.

[0003]

FIG. 9 is a diagram schematically showing a conventional coil rewinding process. In this figure,
Reference numeral 3 denotes the above-described pop coil or spool (hereinafter referred to as a remaining coil), 4 denotes a rewinding machine (payoff reel), 5 denotes a coil car, 2a denotes a preceding coil, and 2b denotes a next rewinding coil (following coil). Due to the rotation of the mandrel of the rewinding machine 4, the preceding coil 2a is rewound to the left in the drawing. The trailing coil 2b is located on the extension of the mandrel of the rewinding machine 4, and the coil car 5 moves horizontally between them.

In the conventional rewinding process, the rewinding of the preceding coil 2a is completed, and the remaining coil 3 is attached to the mandrel of the rewinding machine 4.
Are left, (A) the coil car 5 moves to the lower part of the mandrel of the rewinding machine 4, and (B) the coil car 5
The remaining coil 3 is placed on the rewinding machine 4 and taken out from the rewinding machine 4. In this state, the remaining coil 3 is processed using a crane or the like.
(C) Next, the coil car 5 moves to the lower part of the following coil 2b to receive the latter coil 2b, and (D) moves to the lower part of the mandrel of the rewinding machine 4 to transfer the following coil 2b to the rewinding machine 4. After setting, the rewinding of the succeeding coil 2b is started.

[0005] As described above, in the conventional rewinding process,
The operation of taking out the remaining coil 3 and processing it with a crane or the like (the process of FIG. 9B) is performed as a process before mounting the succeeding coil 2b (next coil) on the rewinding machine 4. But,
During this time, the next coil cannot be mounted on the rewinding machine, the line is stopped, and the operation rate of the rolling equipment is reduced.

Conventionally, the following means have been used to solve this problem. As shown by a two-dot chain line in FIG.
Two 4's are arranged side by side, or a two-axis rotary type (so-called carousel type) is used, and alternately switched. As shown by the two-dot chain line in FIG. 8B, the rewinding machine is a double mandrel, and the following coil is fed in from the back. As shown by a two-dot chain line in FIG. Do. In this case, the pop coil processing of the preceding coil and the takeout of the free coil are performed on the dedicated rewinding machine 4a side.

However, the above method requires two rewinding machines, so that there is a problem that the equipment cost is increased. Also,
In the method of (1), in the reverse rolling mill, it is difficult to adjust the grip phase at the time of gripping the tip of the second pass, which is not practical. In addition, in the case of a coil without a sleeve, a mandrel drive device is required for both a dedicated rewinding machine and a regular rewinding machine, which takes up installation space and hinders work.

The present invention has been made to solve such a problem. That is, an object of the present invention is that the step of processing the remaining coil of the preceding coil and the step of mounting the succeeding coil on the same rewinding machine can be performed almost simultaneously, thereby achieving a single rewinding. It is an object of the present invention to provide a method and an apparatus for rewinding a coil which can greatly reduce idle time by using a machine.

[0009]

According to the present invention, there is provided a rewinding machine which is movable between a rewinding position A and a standby position B which is horizontally moved in the axial direction from the rewinding position A to the support side of the mandrel,
a. After the rewinding of the preceding coil is completed, the rewinding machine is moved to the standby position B while leaving the remaining coils, and b. Next, the remaining coil is taken out from the rewind position A, and at the same time, the succeeding coil is transported to the rewind position A, and c. Thereafter, a method of rewinding the coil is provided, wherein the rewinding machine is moved from the standby position B to the rewinding position A.

Further, according to the present invention, a rewinding machine capable of moving between a rewinding position A and a standby position B horizontally moved in the axial direction from the rewinding position A to the support side of the mandrel, B, a remaining coil take-out device that holds the remaining coil on the mandrel during the movement and removes the remaining coil from the rewind position A after the movement, and a coil car that transports the succeeding coil to the rewind position A. A coil rewinding device is provided.

According to the method and apparatus of the present invention, after the rewinding of the preceding coil is completed, the rewinding machine is moved to the standby position B while leaving the remaining coil, so that the rewinding position A
Since only the remaining coil (pop coil or spool) remains, the remaining coil take-out device and the coil car are simultaneously operated to take out the remaining coil from the rewind position A, and at the same time, transport the succeeding coil to the rewind position A. can do. Therefore, after that, by moving (returning) the rewinding machine from the standby position B to the rewinding position A, the rewinding of the succeeding coil can be started.

That is, by simultaneously operating the remaining coil take-out device and the coil car, the step of processing the remaining coil of the preceding coil and the step of mounting the succeeding coil on the same rewinding machine can be performed almost simultaneously. The idle time can be greatly reduced by using a single rewinding machine.

According to a preferred embodiment of the present invention, the remaining coil take-out device is movable from the rewind position A to the take-out position C in the axial direction of the mandrel, and moves the remaining coil downward at the rewind position A. From above, the coil car is horizontally movable between a rewind position A and a standby position D located on the rear of the rewind line, and the height of the following coil is adjusted. It can be moved up and down according to the mandrel.

According to another preferred embodiment, the remaining coil take-out device is capable of moving horizontally between a rewind position A and a take-out position C located on the rear of the rewind line, At the return position A, the remaining coil is lifted and supported from below, and the coil car is movable from the rewind position A to the standby position D in the axial direction of the mandrel, and the height of the following coil Can be moved up and down according to the mandrel.

According to the configuration of the present invention, the rewinding machine, the remaining coil take-out device and the coil car can be horizontally moved in different directions orthogonal to each other, so that mutual interference is reduced, and the remaining coil is processed by a crane or the like. The step of inserting the row coil into the mandrel can be performed simultaneously and in parallel.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In each of the drawings, common portions are denoted by the same reference numerals, and redundant description will be omitted. FIG. 1 is a plan view showing a first embodiment of a rewinding device according to the present invention. In this figure, the line ZZ indicates the rewind line of the coil. Also, the coil 2a
The (preceding coil) is rewound in a direction indicated by an arrow at a rewind position A indicated by a two-dot chain line in FIG. As shown in this figure, a coil rewinding device 10 of the present invention
2. It is composed of a remaining coil take-out device 14 and a coil car 16.

FIG. 2 is a plan view of the rewinding machine of FIG.
In this figure, the rewinding machine 12 includes an electric motor 12a, a spline 12b, a speed reducer 12c, a hydraulic cylinder 12d, a rail 12e, and the like. The mandrel 13 for rewinding the coil is attached to the output shaft of the speed reducer 12c, and is driven to rotate by the electric motor 12a via the spline 12b. Further, the hydraulic cylinder 12d moves the mandrel 13 and the speed reducer 12c along the length direction of the spline 12b to the coil rewind position A and the standby position B where the mandrel 13 and the speed reducer 12c are horizontally moved in the axial direction toward the mandrel support side. You can move between.

FIG. 3 is a plan view of the remaining coil removing device of FIG. As shown in FIG.
4 is provided with a cradle 15 which can be raised and lowered and a traveling trolley 14b which moves the cradle along a rail 14a.
In the axial direction from the rewind position A to the take-out position C, and the rewind position A lifts and supports the remaining coil 3 from below. With this configuration,
While the rewinding machine 12 is moving to the standby position B, the remaining coil 3 is held on the mandrel, and after the movement, the remaining coil 3 is taken out of the rewinding position A and moved to the position C, where the remaining coil is processed using a crane or the like. can do.

FIG. 4 is a plan view (A) of the coil car of FIG.
And a side view (B). In this figure, coil car 1
Numeral 6 indicates that the coil 2 can be moved horizontally between a rewind position A and a standby position D located on the rear (right side in the figure) on the rewind line, and the height of the trailing coil 2b is adjusted by the mandrel 13
Can be moved up and down by a hydraulic cylinder or the like. With this configuration, the following coil 2b can be transported from the standby position D to the rewind position A.

With the configuration of the first embodiment described above, the rewinding machine 12, the remaining coil removing device 14, and the coil car 16
Can be moved horizontally in different directions orthogonal to each other, and mutual interference can be greatly reduced.

FIG. 5 is an operation explanatory view of the first embodiment of the rewinding device of the present invention shown in FIGS. As shown in this figure, in the rewinding device 10 of the present invention, (A) when the rewinding of the preceding coil is completed, the rewinding machine 12 moves to the standby position B while leaving the remaining coil 3, and (B) Then, the remaining coil take-out device 14 and the coil car 16 are operated at the same time, the remaining coil 3 is moved from the rewind position A to the take-out position C by the remaining coil take-out device 14, and at the same time, the subsequent coil is taken up by the coil car 16 into the rewind position A. Transport to (C) Thereafter, by moving the rewinding machine 12 from the standby position B to the rewinding position A, the rewinding of the following coil 2b (D) can be started. The remaining coil 3 moved to the removal position C is taken out by a crane or the like in parallel with (C) or (D).

Therefore, in (B), the step of processing the remaining coil 3 of the preceding coil 2a and the step of processing the succeeding coil 2b of the same rewinding machine 12 by simultaneously operating the remaining coil take-out device 14 and the coil car 16 are performed. The step of mounting on the mandrel 13 can be performed almost simultaneously, and the idle time can be significantly reduced by using a single rewinding machine.

FIG. 6 is an operation explanatory view similar to FIG. 5, showing a second embodiment of the rewinding device of the present invention. In this figure, the remaining coil take-out device 14 is horizontally movable between a rewind position A and a take-out position C located on the back of the rewind line. Further, the coil car 16 is movable from the rewind position A to the standby position D in the axial direction of the mandrel. That is, in the second embodiment of FIG. 6, the positions of the remaining coil take-out device 14 and the coil car 16 are reversed, and other configurations are the same as those of the first embodiment of FIGS.
This is the same as the embodiment.

With this configuration, as in the case of FIG.
(A) When the rewinding of the preceding coil 2a is completed, the rewinding machine 12 moves to the standby position B while leaving the remaining coil 3, and (B)
Next, the remaining coil take-out device 14 and the coil car 16 are simultaneously operated, the remaining coil take-out device 14 moves the remaining coil 3 from the rewind position A to the take-out position C, and at the same time,
The trailing coil is transported to the rewind position A by the coil car 16. (C) Thereafter, by moving the rewinding machine 12 from the standby position B to the rewinding position A, the rewinding of the following coil 2b (D) can be started. Further, with this configuration, similarly to the first embodiment, the rewinding machine 12, the remaining coil take-out device 14, and the coil car 16 can be horizontally moved in different directions orthogonal to each other, reducing mutual interference and reducing the remaining coil. The processing by the crane or the like and the step of inserting the subsequent coil into the mandrel can be performed simultaneously in parallel.

FIG. 7 is a comparison diagram of cycle times.
In this figure, (A) shows the case of the conventional rewinding step shown in FIG. 9, and (B) shows the case of the above-described first embodiment of the present invention. From this figure, it can be seen that according to the coil rewinding method of the present invention, the cycle time can be significantly reduced from about 135 seconds in the related art to about 60 seconds in the first embodiment. Similarly, in the case of the second embodiment (not shown), the time can be further reduced to about 50 seconds.

As described above, according to the method and apparatus of the present invention, after the rewinding of the preceding coil 2a is completed, the remaining coil 3
The remaining coil 3 (pop coil or spool) remains at the rewind position A by moving the rewinding machine 12 to the standby position B while leaving the remaining coil. At the same time, the remaining coil 3 is taken out from the rewind position A, and
b can be transported to the rewind position A. Therefore,
Thereafter, by moving the rewinding machine 12 from the standby position B to the rewinding position A, the rewinding of the succeeding coil 2b can be started.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously changed without departing from the gist of the present invention.

[0028]

As described above, the coil rewinding method and apparatus according to the present invention comprises a step of processing the remaining coil of the preceding coil by simultaneously operating the remaining coil extracting device and the coil car; The steps of mounting on the same rewinding machine can be performed almost at the same time, thereby having an excellent effect that the idle time can be greatly reduced by using a single rewinding machine. .

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a coil rewinding device of the present invention.

FIG. 2 is a plan view of the rewinding machine of FIG.

FIG. 3 is a plan view of the remaining coil removing device of FIG. 1;

FIG. 4 is a plan view and a side view of the coil car of FIG. 1;

FIG. 5 is an operation explanatory view of the first embodiment of the rewinding device of the present invention.

FIG. 6 shows a second embodiment of the rewinding device of the present invention.
It is operation | movement explanatory drawing similar to.

FIG. 7 is a comparison diagram of cycle times.

FIG. 8 is a view schematically showing a conventional rolling line.

FIG. 9 is a view schematically showing a conventional coil rewinding step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rolling machine 2, 2a, 2b coil 3 Remaining coil (pop coil or spool) 4 Rewinding machine (pay-off reel) 4a Rewinding-only machine 5 Coil car 10 Coil rewinding device 12 Rewinding machine 13 Mandrel 14 Remaining coil unloading device 15 Cradle 16 Coil car A Rewind position B Standby position of rewinding machine C Unloading position D Standby position of coil car

Claims (4)

[Claims] 1. A rewinding machine which is movable between a rewinding position A and a standby position B which is horizontally moved in the axial direction from the rewinding position A to the support side of the mandrel, and a. After the rewinding of the preceding coil is completed, the rewinding machine is moved to the standby position B while leaving the remaining coils, b. Next, the remaining coil is taken out from the rewind position A, and at the same time, the subsequent coil is transported to the rewind position A; c. And moving the rewinding machine from the standby position B to the rewinding position A. 2. A rewinding machine which is movable between a rewinding position A and a standby position B which is horizontally moved in the axial direction from the rewinding position A to a support side of the mandrel, and a mandrel while the rewinding machine is moving to the standby position B. Rewind position A after retaining upper coil and moving
A coil rewinding device, comprising: a remaining coil takeout device that takes out a remaining coil from a coil; and a coil car that conveys a succeeding coil to a rewinding position A. 3. The remaining coil extracting device is movable from a rewind position A to an extracting position C in the axial direction of the mandrel, and lifts and supports the remaining coil from below at the rewind position A. The coil car is horizontally movable between a rewind position A and a standby position D located on the rear of the rewind line,
The coil rewinding device according to claim 2, wherein the height of the following coil can be raised and lowered in accordance with the height of the mandrel. 4. The unwinding device according to claim 1, wherein the unwinding device is capable of moving horizontally between a rewind position A and an unwinding position C located on the unwinding line. The coil car is movable from the rewind position A to the standby position D in the axial direction of the mandrel, and can be moved up and down in accordance with the height of the following coil in accordance with the mandrel. The coil rewinding device according to claim 2, wherein: