JPH072084Y2 - Coil car for loose coil of metal strip - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a metal strip coil (hereinafter referred to as a loose coil) whose winding is loose, in a state where the winding shape is kept in a perfect circle.
The present invention relates to a coil car that can be mounted on a coil rewinding machine.

<Prior Art> Since loose coils lose their winding shape when the axis of the coil is horizontal (hereinafter referred to as the down end), the loose coil is usually handled in the attitude where the coil axis is vertical (hereinafter referred to as the up end).

On the other hand, in general metal strip processing equipment, since the coil is processed in a down-end posture, for example, when rewinding the coil, the loose coil is rewound into a hard coil (hereinafter referred to as a tight coil). Or, a special coil cradle was used to carry it.

Conventionally, in order to rewind a loose coil having a large degree of looseness into a tight coil, a rewinding / winding machine as shown in FIG. 6 has been used. This is because the loose coil 5 placed on the rewind table 9 in the up-end posture is pressed by the snubber roll 13 on the take-up table 12 while applying tension to the metal strip 10 with the support roll 11, and the tight coil 14 is pressed. It is to rewind. This system further requires a device that reverses the tight coil 14 on the winding table 12 to the down-end posture.

On the other hand, there is a device as shown in FIG. 7, in which a loose coil having an up-end posture is directly rewound into a tight coil having a down-end posture. This is because the loose coil 5 placed on the rewind table 15 in the up-end posture is reversed in the middle of the metal strip 10 and tension is applied by the bridle roll 16 while the winder 17 directly takes the down-end posture. Then, it is rewound on the tight coil 14.

For loose coils that do not loosen significantly (for example, coils that have been annealed and box-annealed, and the annealed separator has shrunk to loosen), do not re-wind it into a tight coil and leave it as is. It may be installed in the rewinding machine of the following processing equipment. In this case, the device for rewinding the tight coil as described above is unnecessary, but for example, a coil car having a coil cradle for supporting the loose coil in a perfect circle is used as in Japanese Utility Model Laid-Open No. 55-165612. Had to do. This point will be described with reference to FIGS.

In the figure, the coil 18 whose degree of slackness is not so large is placed on the coil stand 19 in a down-end posture as it is, and placed on the coil car 21 by the coil tongs 20. Then, as shown in FIG. The coil 18 is conveyed to the winder 1 and mounted on the mandrel 2. However, when the coil 18 is hung up by the coil tongs 20, the coil 18 expands in the vertical direction due to its own weight. It was necessary to provide a coil pedestal 22 capable of supporting a loose coil in a perfect circle, as in Japanese Patent Laid-Open No. 55-165612.

<Problems to be Solved by the Invention> As described above, the rewinding and winding device shown in FIG. 6 further requires a device for reversing the coil rewound into the tight coil to the down-end posture, which reduces the construction cost. There was a drawback that it became high.

Further, the apparatus of FIG. 7 requires a large amount of equipment and requires a large space, which is a practical problem.

When using the coil cradle disclosed in Japanese Utility Model Laid-Open No. 55-165612, when the coil is hoisted in the down-end posture,
As shown in the figure, the coil extends under its own weight, and there are problems such as scratches due to rubbing of the metal strip inside the coil, promotion of loosening of the coil, and scratches due to tongs. Further, the coil diameter is different for each coil, and it has been impossible to properly support the coil diameter. Therefore, depending on the coil, the shape of the inner diameter cannot be maintained well, and it may be extremely difficult to insert the coil into the mandrel of the winder.

An object of the present invention is to provide a coil car that solves the above drawbacks.

<Means for Solving the Problem> The present invention is directed to a coil loading section for loading loose coils of metal strip in an up-end posture, and a coil on the coil loading section for down-end focusing on a horizontal spindle. A coil car for a loose coil of a metal strip, comprising: a coil gripping frame that can be inverted 90 degrees in a posture; and a plurality of coil gripping tools that are radially arranged inside the coil gripping frame and that can move in and out synchronously.

<Operation> Since the outer peripheral surface of the loose coil 5 is gripped by the plurality of coil gripping tools 8 so that the wound shape maintains a perfect circle, even if the coil gripping frame 6 is erected and inverted to the down-end posture. , The rolled shape does not change. Therefore, the loose coil 5 can be loaded in the coil car 4 in the up-end posture, reversed to the down-end posture on the coil car 4, and mounted on the winding machine 2.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a coil car of the present invention and a method of using the coil car, and FIG. 2 is a view taken along the line II of FIG.

In the figure, 1 is a coil rewinding machine for metal strip processing equipment, and 2 is a mandrel of the rewinding machine 1. Three
Is a lifting magnet for loading the loose coil 5 hung in the up-end posture on the coil car 4 at the coil loading position A. The coil car 4 is the rewinding machine 1.
And the coil loading position A.

Reference numeral 6 denotes a coil gripping frame which has a coil loading section for loading the loose coil 5 in an up-end posture and which reverses the coil on the coil loading section by 90 degrees to the down-end posture. The coil gripping frame 6 is supported by the coil car 4 with the support shaft 7 as the center of reversal, and is driven by a driving device (not shown) from the horizontal state at the coil loading position A when the coil is mounted on the rewinding machine. It is possible to stand upright.

Reference numeral 8 denotes a plurality of coil gripping tools that are radially arranged inside the coil gripping frame 6 and can move in and out in synchronization. Although not shown in the drawing, each coil gripping tool 8 has a structure that can be mechanically interlocked with each other by using a universal shaft or the like, and can automatically align the loose coil 5 from the outer peripheral surface at the same time. It has a structure.

Therefore, the loose coil 5 has its outer peripheral surface gripped by the coil gripping tool 8 so that the coiled shape maintains a perfect circle. Therefore, even if the coil gripping frame 6 is erected and inverted to the down-end posture, the coiled shape will not change. Does not deform. The inner diameter of the coil is similar to the outer diameter of the coil, and if the outer peripheral surface is kept in a perfect circle, the inner diameter of the coil will also be a perfect circle.

Then, at the coil loading position A, the loose coil 5 is hung from the lifting magnet 3 in an up-end posture, placed on the coil gripping frame 6 of the coil car 4, gripped by the coil gripping tool 8, and at the same time automatically adjusted. Cored. The loose coil 5 is then conveyed by the coil car 4 in front of the rewinding machine 1, where the coil gripping frame 6
Stand up and reverse to the down-end posture. In addition,
The coil grip frame 6 may be erected while the coil car 4 is traveling. Then, the coil car 4 is moved, the loose coil 5 is inserted into the mandrel 2, the coil gripping tool 8 is retracted, and the loose coil 5 is mounted on the mandrel 2. Here, in order to smoothly attach the loose coil 5 to the mandrel 2 from the coil car 4, it is convenient to align the center of the loose coil 5 with the axis of the mandrel 2 when the coil holding frame 6 is erected. .

Next, FIGS. 3 to 5 are views showing a second embodiment of the present invention. FIG. 3 is a side view, FIG. 4 is a sectional view taken along line II-II of FIG. 3, and FIG. It is a III-III sectional view taken on the line of FIG. In this embodiment, the coil gripping tool 8 is divided into a plurality of layers (5 layers in FIG. 3) in the axial direction of the coil. As a result, the coil grippers 8 can be widely spaced from each other, and can be applied to small-diameter coils to large-diameter coils. In this example, the coil grippers 8 are shifted in phase by 45 °, and the number of coil grippers 8 in each phase is four.
It is not particularly limited to this.

<Effect of the Invention> As described above, according to the present invention, it is possible to handle all loose coils before mounting on the winding machine in an up-end posture. Therefore, it is necessary to rewind the loose coil into a tight coil as in the conventional case. In addition, deformation of the winding shape of the coil and generation of scratches due to lifting with a tongue or the like in a down-end posture are eliminated, and a winding shape correcting device is not required.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a coil car of the present invention and a method of using the coil car, and FIG. 2 is a view taken along the line II of FIG. FIGS. 3 to 5 are views showing a second embodiment of the present invention. FIG. 3 is a side view, FIG. 4 is a sectional view taken along line II-II of FIG. 3, and FIG. 5 is of FIG. It is a III-III line sectional view. FIG. 6 is a plan view of a device for rewinding a conventional loose coil into a tight coil, and FIG. 7 is a perspective view of another device for rewinding a loose coil into a tight coil. Figures 8 and 9 show Shokai
It is explanatory drawing of the usage method of the coil car which has the receiving stand of 55-165612 publication, FIG. 8 is a front view, FIG. 9 is a side view. 1 ... Rewinding machine, 2 ... Mandrel, 3 ... Lifting magnet, 4 ... Coil car, 5 ... Loose coil, 6 ... Coil gripping frame, 7 ... Spindle, 8 ... Coil gripping tool.

Front page continued (72) Inventor Teruyuki Nishide 1-chome, Mizushima Kawasaki-dori, Kurashiki City, Okayama Prefecture (without street number) Inside the Mizushima Steel Works, Kawasaki Steel Co., Ltd. No address) Kawasaki Steel Co., Ltd., Mizushima Works (56) References JP-A-58-116930 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A coil loading section for loading a loose coil of a metal strip in an up-end orientation, and a coil capable of reversing the coil on the coil loading section in a down-end orientation about a horizontal spindle by 90 degrees. A coil car for loose coil of a metal strip, comprising a gripping frame and a plurality of coil gripping tools that are radially arranged inside the coil gripping frame and can move in and out synchronously.