JP2003230910A - Apparatus for correcting failure in coil winding shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for correcting a failure in a coil winding shape having a new configuration in which a coil can be prevented from falling by a simple means when the failure of the coil winding shape is corrected by pressing the coil in a downend state on a transfer line from both lateral sides thereof. <P>SOLUTION: This apparatus corrects the failure of coil the winding shape when a metal strip is wound into a coil shape. A horizontal frame is arranged astride the transfer line of the coil with its axis horizontally arranged, and holding plates which move forwardly/backwardly are arranged to face end faces of the coil on the transfer line at both legs of the horizontal frame. Further, the horizontal frame is movably installed in the apparatus. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for correcting a defective winding shape of a coil when a metal strip is wound into a coil. [0002] In a production line of a metal strip, for example, a steel strip, a steel strip after hot rolling or cold rolling is wound into a coil by a coiler. This winding
Usually done around a horizontal winding axis,
At this time, due to various factors such as poor winding or fluctuation of winding tension, the winding of the coil may be uneven, such as a telescope at the inner or outer periphery of the coil (the end may protrude from the coil edge due to axial displacement) or an irregular edge. Shape defects may occur. When this winding shape defect occurs, it is common to perform rewinding and rewinding or rewinding to correct the winding shape. [0003] However, when the steel strip to be wound is thick or wide, the winding cannot be performed unless the rewinding equipment is adapted to the size, and the use of the winding habit is not possible. Rewinding is not envisaged when a continuous process of immediately transporting after winding is expected. Under such a background, there is an urgent need to develop a technology for performing correction on a continuous production line without performing rewinding when a winding shape defect occurs. In order to correct a defective winding shape of a coil without performing rewinding, a coil in a so-called down-end state in which the winding axis is wound horizontally as described above, the axis of which becomes vertical. Orientation, a so-called up-end state, is followed by a method of correcting the coil by its own weight, weight or pressing from above. [0005] However, when a continuous process in which the coil is conveyed immediately after winding is expected, the coil in the down-end state wound around the horizontal axis must be directly mounted on the conveying line. It is difficult to add a repairing step. [0006] Here, a method of correcting the winding shape defect of the coil in the down-end state is required. In Japanese Patent Application Laid-Open No. 9-57341, the coils are arranged on both sides of the coil conveyed in the down-end state. It has been proposed to press a portion protruding from the coil end face into the inside by a pressing device driven by air or hydraulic pressure. According to this proposal, it is possible to certainly correct the winding shape defect by pressing the coil in a down-end state on both sides of the transfer line, but the pressing force from both sides of the coil is appropriately controlled. However, if the stroke of the device is not properly synchronized on both sides, there is a danger that the coil that assumes an unstable posture of a down-end state will easily fall over. In this regard, in the technique described in Japanese Patent Application Laid-Open No. 9-57341, not only the pressing force is controlled but also the distance between the coil and the pressing device is controlled in relation to the product.
These controls are not intended to prevent the coil from falling over, so that it is difficult to prevent them, and there is a disadvantage that a great deal of equipment and labor are required to realize these controls. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for correcting a wound shape defect by pressing a coil in a down-end state from both sides on a transport line.
It is an object of the present invention to provide a coil winding shape defect correcting device having a novel structure that can prevent the coil from overturning by simple means. SUMMARY OF THE INVENTION The present invention is an apparatus for correcting a defective winding shape of a metal strip when the metal strip is wound into a coil, and the apparatus is placed so that the axis is horizontal. The frame is arranged across the transfer line of the coil, and the two legs of the frame are provided with presser plates that can move forward and backward toward the end face of the coil on the transfer line, and the frame is provided so as to be movable. And a coil winding shape defect correcting device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A coil winding defect correcting apparatus according to the present invention will be described below in detail with reference to FIG. The apparatus according to the present invention is, for example, a coil 1 having a steel strip after hot rolling in a continuous steel strip production line.
Is transported in the wound state, that is, in the down-end state, on the transport line 2 to correct the winding shape defect, but it can be used outside the transport line as a matter of course. That is, in the apparatus according to the present invention, a frame 3 is disposed across the transport line 2, and the legs 3 a and 3 b of the frame 3 are pressed by the legs 3 a and 3 b so as to be able to advance and retreat toward the end face of the coil 1 on the transport line 2. It is provided with plates 4a and 4b, respectively. These pressing plates 4a and 4b are attached to the respective legs 3a and 3b via a driving mechanism 5 such as a hydraulic cylinder or an air cylinder. Then, by the operation of the drive mechanism 5, the holding plates 4a and 4
b moves toward the coil 1 on the transport line 2 and the end face of the coil 1 is adjusted by clamping the coil 1 between the holding plates 4a and 4b. Here, as described above, when the pressing plates 4a and 4b are pressed against the end face of the coil 1, if the proper pressing force and stroke are not properly given, the disadvantage of inducing the coil 1 to fall is caused. It is important to eliminate this problem. The apparatus according to the present invention is characterized in that the above problem is solved by movably installing the frame 3 to which the holding plates 4a and 4b are attached. That is, both legs 3a and 3b of the frame 3
The frame 3 is movably installed on a floor of a factory, for example, by attaching rollers 6 to the lower ends of the frames. Holding plate 4 supported by frame 3 installed as above
a and 4b are pressed toward the end face of the coil 1 on the transport line 2, the strokes and the pressing forces applied to the holding plates 4a and 4b may be different, or the distances from the coil 1 to the holding plates 4a and 4b may be different. When there is a factor that causes the coil 1 to fall, for example, when the coil 1 is unequal, the frame 3 itself, which is the base of the holding plates 4a and 4b, repeatedly moves in the moving direction of the holding plate. As a result, the state is shifted to a balanced state, and finally, it is possible to uniformly press the end face of the coil 1 between the pressing plates 4a and 4b. Further, since the proper pressing force acts uniformly on the end face of the coil 1 via the holding plates 4a and 4b by the movement of the frame 3, the shape can be corrected without damaging the end face of the coil 1. Achieved. FIG. 1 shows holding plates 4a and 4b.
The size corresponding to the vicinity of the inner peripheral portion of the coil 1 is shown as an example corresponding to the telescope of the inner peripheral portion of the coil, but as shown in FIG. It is possible to make the size of the cover so as to cope with uneven edges between the inner and outer circumferences as well as the inner and outer peripheral telescopes. According to the present invention, it is possible to correct a defective winding shape of a coil by using a device having a simple structure without causing the coil to fall over and without damaging the coil.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a structure of a coil winding defect correcting device of the present invention. FIG. 2 is a view showing a structure of another coil winding shape defect correcting device according to the present invention. [Description of Signs] 1 Coil 2 Conveying line 3 Frames 4a, 4b Holding plate 5 Drive mechanism 6 Roller

Claims (1)

Claims 1. An apparatus for correcting a defective winding shape of a coil when a metal strip is wound into a coil shape, the apparatus comprising: a coil conveying line in which a shaft is placed in a horizontal direction. A frame is disposed on both legs of the frame, and holding plates capable of moving back and forth toward the end face of the coil on the transport line are provided, and the frame is movably installed. Shape defect correction device.