JPH05213315A - Inner circumference edge correction device of metal band coil - Google Patents

Abstract

PURPOSE:To automatically correct suspended parts at the inner circumference of a metal band coil for fully automating the inner circumference packaging of the metal band coil. CONSTITUTION:An inner circumference packaging machine of a metal band coil 7 consists of an expandable drum 1 which is divided into two or more segments and equipped with an expansion mechanism that expands the segments in the radial direction all together, a wrapping paper feeder which supplies wrapping paper 22 having a specified size to the expandable drum 1 and winds it around the expandable drum 1, and a drum carriage 4 which inserts the expandable drum 1 into the inner circumference of the metal band coil 7. An inner circumference edge correction device 8 of the metal band coil 7 provided on this machine consists of stands which are installed on the inlet or the outlet side of the expandable drum 1 in regards to the metal band coil 7 or on both inlet and outlet sides, and a correction bar mechanism equipped with at least a vertically-movable correction bar unit and two horizontally-movable ones that symmetrically move.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting the inner peripheral edge of a coil in advance when automatically wrapping the inner periphery of a metal coil such as a steel strip with a wrapping paper. ..

[0002]

2. Description of the Related Art A metal strip coil such as a steel strip has an outer diameter of 650.
~ 2000mm, inner diameter 508 ~ 762mm, width 60
It is generally 0 to 1850 mm. Conventionally, the inside and outside of the coil are wrapped with wrapping paper for packaging the metal strip coil. Although the outer circumference of the coil is relatively easy to wrap, the inner circumference of the coil is relatively difficult to wrap due to the limited space and the hanging coil end.

Conventionally, when a large-diameter cylindrical hole of a coil is wrapped with a wrapping paper, an expansion / contraction drum in which the wrapping paper is temporarily wound is inserted into the cylindrical hole of the coil, and the diameter of the drum is expanded to wrap the inner circumference. ..

However, in practice, the inner peripheral edge of the coil may hang down due to its own weight or curling, which makes it difficult to package the inner peripheral edge. Especially when the metal strip becomes thinner,
The drooping of the inner peripheral edge of the coil becomes considerably large, and even if the expansion / contraction drum is reduced in diameter to the maximum extent, a part of the drum interferes with the inner peripheral edge, so that the inner peripheral packaging of the coil becomes impossible.

For this reason, before inserting the expansion / contraction drum into the inner circumference of the metal strip coil, an operator manually corrects the inner circumference end of the coil.

However, this work for correcting the inner peripheral edge is not only time-consuming, but also often accompanied by danger.

[0007]

SUMMARY OF THE INVENTION In order to fully automate the inner circumference wrapping of a metal strip coil, the present invention provides a coil inside the coil immediately before the expansion / contraction drum in which the wrapping paper is temporarily wound is inserted into the inner circumference of the metal strip coil. The problem is to automatically correct the droop at the edge.

[0008]

SUMMARY OF THE INVENTION An inner peripheral edge straightening device for a metal band coil according to the present invention has a plurality of divided segments, and an expansion / contraction drum provided with a mechanism for simultaneously expanding / contracting each segment in a radial direction. Automatic inner-wrapping of metal strip coil, which comprises a wrapping-paper feeder for supplying wrapping paper of a size to the expansion / reduction drum and winding it around the outer circumference of the drum, and a drum moving machine for inserting the expansion / reduction drum into the inner circumference of the metal strip coil. In the apparatus, a gantry arranged on the inlet side or outlet side or inlet / outlet side of the expansion / contraction drum with respect to the metal strip coil, at least one pedestal movable vertically in the gantry, and at least symmetrically movable horizontally relative to each other. The above problem is solved by means of a straightening bar mechanism provided with two straightening bar units.

[0009]

First, the expansion / contraction drum is reduced in diameter, and the wrapping paper is temporarily wound around the outer periphery of the expansion / contraction drum. The expansion / contraction drum is made to stand by near the inner circumference inlet of the metal coil, and the inner circumference end of the coil is corrected by the device of the present invention.

In the device of the present invention, at least three sets of straightening bar units are provided. These units first approach each other with a minimum spacing. In that state, the metal strip coil is inserted at a position slightly lower than the center of the inner circumference.

After insertion, one set of all units rises to the center of the inner circumference of the coil, then one unit rises vertically upward and at the same time, the two units are symmetrical with respect to each other in the horizontal direction. Moving.

By such movement of the set of units, the sagging of the inner peripheral edge of the coil is corrected and the inner peripheral edge of the coil is pressed.

After straightening, the expansion / contraction drum is inserted into the inner circumference of the coil to wrap the inner circumference of the coil.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an inner peripheral edge straightening device for a metal band coil according to the present invention will be described with reference to FIGS.

As shown in FIG. 9, the inner peripheral end 71 of the metal strip coil 7 has various shapes. As a typical example,
When the tip of the inner peripheral end 71 hangs but is in contact with the inner circumference of the coil (A), when the inner peripheral end 71 hangs entirely inside the inner circumference of the coil (B), the inner circumference of the coil has several turns. There is a case (C) when it is loose.

The device of the present invention is particularly suitable for correcting the sagging of the inner peripheral ends of (A) and (B).

Before describing an embodiment of the apparatus of the present invention, a schematic structure of an inner circumference automatic packaging apparatus for a metal band coil developed by the present applicant will be described with reference to FIG.

The automatic inner circumference wrapping device for this metal strip coil is
An expansion / contraction drum 1 having a plurality of divided segments and provided with a mechanism for simultaneously expanding / contracting each segment in the radial direction and a mechanism for selectively expanding / contracting only a predetermined segment in the radial direction,
A wrapping paper transport unit 2 that feeds a wrapping paper 22 of a predetermined size with an adhesive tape attached to one end to the expansion / contraction drum 1, and a magnet transport unit 3 that feeds a flexible plate magnet 6 of a predetermined size to the expansion / contraction drum 1. And a drive unit 4 for moving the magnet transport unit 3 to an arbitrary position along the axial direction of the expansion / contraction drum 1, and a drive unit 5 for inserting the expansion / contraction drum 1 into the inner circumference of the metal strip coil 7.

First, the plate-shaped magnet 6 is held by a vacuum on a predetermined segment of the expansion / contraction drum 1, and the wrapping paper 22 is temporarily wound on the plate-shaped magnet 6. In this way, the drum 1 is inserted into the inner circumference of the coil 7, and the wrapping paper 22 and the plate-shaped magnet 6 mounted on the outer circumference of the drum 1 are transferred to the inner circumference of the metal strip coil 7 to wrap the inner circumference. I do.

Inner peripheral edge straightening device 8 for metal strip coil according to the present invention
Are arranged on the inlet side (solid line position) or outlet side (dotted line position) or the inlet / outlet side of the expansion / contraction drum 1 with respect to the metal strip coil 7, as shown in FIG.

An embodiment of the device of the present invention will be described with reference to FIGS. 2-7. The device 8 of the present invention includes a mount 81 and a mount 81.
Two straightening bar units 82, 83, 8 which are vertically movable and symmetrically horizontally movable with respect to each other.
4 and a straightening bar mechanism 85 provided with 4.

The pedestal 81 has an elevating frame 811 as shown in FIGS. The vertically moving straightening bar unit 82 is vertically attached to the central portion of the horizontal beam of the elevating frame 811, and a pair of horizontally moving straightening bar units 83 and 84 face the vertical beams, respectively. Can be installed.

The straightening bar mechanism 85, as best shown in FIG. 6, corresponds to the outer diameter and the inner diameter of the metal strip coil 7,
The lifting frame 811 sets the initial position.

Since the straightening bar units 82, 83, 84 of the straightening bar mechanism 85 have the same structure, the unit 82 will be described as a representative example.

As shown in FIGS. 3 and 4, the straightening bar unit 82 includes a straightening bar 821, a fluid pressure cylinder 822 for moving the bar back and forth, a lifting slider 823, and a fluid pressure cylinder 824 for moving the slider.

The cylinder 824 moves the slider 823 up and down to adjust the vertical position of the bar 821. The cylinder 822 adjusts the front-back position of the bar 821.

As shown in FIG. 1, first, three straightening bars
Bars 821, 831, 8 of the units 82, 83, 84
41 are kept close to each other at a minimum distance, and in this state, they are inserted at a position slightly below the center of the metal strip coil 7 (A).

After insertion, all the units 82, 83, 84 rise to the center of the inner circumference of the coil 7 with the minimum spacing (B). Then one unit 82 has its bar 821
Moves upward in the vertical direction, and the two units 83 and 84 symmetrically move the respective bars 831 and 841 in a direction away from each other in the horizontal direction (C).

In this way, the inner peripheral edge 71 of the coil 7 is pressed against the inner peripheral surface thereof to correct the inner peripheral edge 71.

An example of use of the device 8 of the present invention will be described with reference to FIG. When the present device 8 is arranged on the inlet side of the expansion / contraction drum 1 with respect to the metal strip coil 7 (A), the inner peripheral end of the coil 7 is corrected by the units 82, 83, 84 near the inlet of the coil 7 as described above. Then, the expansion / contraction drum 1 is gradually inserted into the inner circumference of the coil.

At the time of this insertion, the guide 11 attached to the tip of the expansion / contraction drum 1 transmits the correction toward the inner side of the inner peripheral end of the coil, which is corrected near the inlet, toward the inside of the coil. An example of the guide 11 is shown in FIG.

When the device 8 is arranged on the outlet side of the expansion / contraction drum 1 with respect to the metal strip coil 7 (B), the respective units 82, 83, 8 are arranged over the entire length of the inner circumference of the coil as described above.
4 after each bar 821, 831, 841 is inserted,
The expansion / contraction drum 1 is inserted from the opposite side. In this case,
It is not necessary to provide the guide 11 at the tip of the expansion / contraction drum 1.
Further, the case (A) structure may be installed on the entry / exit side. Further, three or more straightening bar units may be provided for smoothening the inner peripheral edge.

[0033]

According to the present invention, the inner circumference wrapping of the metal strip coil can be completely automated, and the efficiency of the wrapping work and the safety can be ensured.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the operating principle of an apparatus of the present invention.

FIG. 2 is a side view of the straightening bar of the device of the present invention.

FIG. 3 is a front view of a straightening bar unit of the device of the present invention.

FIG. 4 is a side view of FIG.

FIG. 5 is a side view of a straightening bar unit according to another embodiment of the present invention.

FIG. 6 is a front view of the device of the present invention.

FIG. 7 is a side view of FIG.

FIG. 8 is a plan view of a part of the packaging line showing an installation example of the device of the present invention.

FIG. 9 is a front view showing various aspects of the inner peripheral end of the metal strip coil.

[Explanation of symbols]

 1 Expansion / contraction drum 7 Metal strip coil 8 Device of the present invention 81 Frame 82, 83, 84 Straightening bar unit 85 Straightening bar mechanism, 821, 831, 841 Straightening bar

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Miyuki Okita Inventor Miyuki Oka, Kashima-cho, Kashima-gun, Kashima-gun, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Kashima Steel Works (72) Inventor Hyakuzo Hyaku, Oshima, Kashima-cho, Kashima-gun, Ibaraki Prefecture Address Sumitomo Metal Industries, Ltd. Kashima Steel Works (72) Inventor Isamu Ishii 342-3 Kaneda-cho, Kawanoe City, Ehime Prefecture (72) Inventor Masamichi Sugi 4-7-16 Kakio, Niihama City, Ehime Prefecture

Claims (1)

[Claims] 1. An expansion / contraction drum having a plurality of divided segments and having a mechanism for simultaneously expanding / contracting each segment in the radial direction, and a wrapping paper having a predetermined size supplied to the expansion / contraction drum and wrapped around the outer periphery of the drum. In a metal band coil inner circumference automatic wrapping device comprising a paper feeder and a drum moving machine for inserting the expansion drum into the inner circumference of the metal band coil, an inlet side or an outlet side or an inlet side of the expansion drum with respect to the metal band coil. .Metal band consisting of a gantry arranged on the outlet side and a rectifying bar mechanism provided with at least one rectifying bar unit movably in the vertical direction and at least two rectifying bar units symmetric to each other in the horizontal direction. Coil inner peripheral edge straightening device.