JP2008290158A - Take-up spool for aluminum-based metallic wire and slitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a take-up spool for an aluminum-based metallic wire which does not deviate or drop from the coil center during transportation and can be more inexpensively provided. <P>SOLUTION: The take-up spool for an aluminum-based metallic wire has a smooth ring-like outer surface and is manufactured by die-casting using aluminum alloy. The spool is mounted on a coiling shaft of a slitting device, which slits a metallic strip made of aluminum or aluminum alloy into a plurality of narrow metallic wires while winding off the strip wound as a coil, and takes up a plurality of slitted metallic wires into a winding shaft. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a winding spool (core) for an aluminum-based metal strip (referred to as a metal strip of aluminum or aluminum alloy), and an aluminum-based metal strip slitting apparatus using the spool.

For example, aluminum-based metal strips used for the fin material of radiators mounted on automobiles are used to feed metal strips (foil) made of wide aluminum or aluminum alloy wound in a coil shape in slitter line slitting equipment. However, it is obtained by slitting a large number of narrow metal strips.
These metal strips are wound around each spool attached to a winding shaft (mandrel) of the slitting apparatus (winding diameter of 1500 mm or more), and shipped in the state of a coil removed from the winding shaft together with the spool.

Conventional spools (Patent Document 1) and plastics (Patent Document 2) are used for the winding spool of the metal strip in the slitting apparatus as described above, and an iron ring is used when strength is required. Was used.
An iron spool is manufactured by cutting an iron pipe having an outer diameter of 320 to 330 mm and an inner diameter of about 300 mm into a predetermined width (length), polishing both ends of the cut and smoothing the surface, and then applying an anticorrosion film on the surface. The
As described above, the aluminum metal strip used for the fin material of the radiator is an ultra-thin material of about 0.04 to 0.1 mm, for example, and such an ultra-thin material is wound around a spool having an outer diameter as described above. When the spool is wound to have a diameter of 1500 mm or more, if the spool strength is insufficient, the spool may be crushed or dropped from the coil during transportation, so an iron spool is often used.

By the way, when exporting the above-mentioned ultra-thin strip coils, they are transported in a state where a plurality of coils packed in a wooden box are horizontally stacked in the hold, but the temperature of the hold greatly changes during transport (for example, the highest About 80 ° C.). And the iron spool has a different coefficient of thermal expansion from the aluminum metal strip coil (the iron spool is larger), and the shrinkage rate at low temperatures is larger for the iron spool, so the spool does not fall off the metal strip coil. There is a possibility that it may be displaced during transportation. For example, when a metal strip coil is rewound to process a fin of a radiator, there is a possibility that it cannot be rewound correctly (decrease in form quality).
Also, iron spools are made by polishing the surface of the steel pipe cut as described above and applying anti-corrosion treatment to increase the manufacturing cost. Particularly when exporting, it is difficult to recover the spool, so the manufacturing cost is low. There is a problem that the price of the metal strip coil is reflected and the product becomes expensive.
JP 2003-040528 A JP 2006-175558 A

The object of the present invention is to maintain the quality of the shape of the aluminum-based metal strip coil during transportation and to reduce the cost. It is providing the spool for winding of the aluminum-type metal strip which can be provided by.
Another object of the present invention is to provide a slitting apparatus capable of manufacturing an aluminum-based metal strip coil whose shape quality does not change by using a spool that can achieve the above object.

  In order to solve the above-described problems, the spool for winding an aluminum-based metal strip according to the present invention has a ring shape with a smooth outer peripheral surface, and is manufactured by die casting using an aluminum alloy.

  The slitting apparatus according to the present invention slits a plurality of narrow metal strips while winding a metal strip made of aluminum or aluminum alloy wound in a coil shape, and winds the slit metal strips into a coil shape. It is a slitting apparatus, The winding spool of the aluminum-type metal strip of Claim 1 is used in order to wind up the said metal strip, It is characterized by the above-mentioned.

According to the spool for winding the aluminum-based metal strip according to the present invention, the thermal expansion coefficient of the spool and the aluminum-based metal strip wound on the spool are similar, so even if the temperature change during transportation is large. The spool is prevented from shifting or dropping from the center of the aluminum-based metal strip coil.
Moreover, since it is manufactured by die casting and does not require machining or anticorrosion for finishing, it is possible to prevent an increase in the cost of the aluminum-based metal strip coil.

  According to the slitting apparatus according to the present invention, since the spool according to the present invention is used, it is possible to provide an aluminum-based metal strip coil whose form quality is not impaired during transportation at a lower cost.

FIG. 1 is a schematic side view showing an embodiment of a slitting device for an aluminum-based metal strip in which a spool according to the present invention is used, and FIG. 2 shows one of the spools for winding an aluminum-based metal strip according to the present invention. It is a half cut sectional view showing a form.
In FIG. 1, a coiled aluminum metal strip a wound around an uncoiler 1 is fed out in the direction of a cutter stand 2 a by a pinch roll 3, and the thickness installed on the cutter stand 2 a is small and alternately up and down. The slitter 2 made up of a large number of disk-shaped cutters is slit into a large number of narrow metal strips b.
Ear portions on both sides of the metal strip a in the width direction are received by the trim feeder 5, scraped by the trim feeder 5, and then collected in the scrap pit 6.

Each metal strip b slit as described above is sent to the loop pit 7 by the pinch roll 4 behind the cutter stand 2a, and given a predetermined tension by the tension pad 10 through the separator 8 and the presser roll 9, and S It is wound around each spool 14 attached to the winding shaft 13 while being pressed by the presser roll 12 through the character arrangement rolls 11 and 11.
In the metal strip a, the thickness of each part in the width direction is slightly different depending on the crown during rolling (generally, the central part is thick and the both sides are thin), and therefore, a number of slit metal strips b have different thicknesses. Thus, if the spools 14 are wound by the spools 14 of the same winding shaft, the winding diameters are different and cannot be wound, and the loop pit 7 absorbs or adjusts them.

As shown in FIG. 2, each spool 14 has a ring shape with a smooth outer peripheral surface, and both inner and outer peripheral edges are chamfered. For example, JIS: ADC12 or other aluminum alloy for die casting is used as a material. For example, it is cast by a cold chamber die casting machine.
Each spool 14 is manufactured by die casting only in principle, and is not subjected to mechanical and other finishing processes.

As shown in FIG. 2, the ring width w is about 1 mm smaller than the width of the metal strip b to be wound, the outer diameter is 320 to 330 mm, and the ring thickness t is about 10 to 15 mm.
The spool 14 of this embodiment is suitable for winding a thin metal strip b having a thickness of about 0.04 to 0.1 mm, for example, and the width of the target metal strip b is about 14 to 70 mm.
Depending on the thickness of the metal strip b, the length of the metal strip b wound around one spool 14 is usually 20,000 m or more and the winding diameter is 1.5 m or more.

According to the spool of the embodiment, since the thermal expansion coefficient is similar to that of the aluminum-based metal strip wound on the spool, the spool is not affected by a large change in temperature during transportation or the like. It is prevented that the coil is shifted or dropped from the coil center.
Moreover, since it is cast by die casting and does not require machining or anticorrosion for finishing, it is possible to prevent an increase in the cost of the aluminum-based metal strip coil.
According to the slitting device of the above embodiment, since the spool of the above embodiment is used, it is possible to manufacture an aluminum-based metal strip coil whose shape quality is not impaired during transportation at a lower cost.

Other Embodiments In the embodiment of the slitting apparatus shown in FIG. 1, the slitter is used to absorb or adjust the difference in the winding diameter of each spool 14 from the slight difference in the plate thickness of each metal strip b. Although the loop pit 7 is provided in the downstream position of 2, the loop pit 7 can be omitted by making the winding shaft 13 have a friction structure.
The winding shaft of the friction structure is configured such that the winding shaft 13 and each spool 14 are rubbed with a predetermined braking force by a spring or the like (the winding shaft 13 and the spool 14 are in a friction clutch relationship). The spool 14 is configured to slip with respect to the winding shaft 13 when a tension of a predetermined value or more is applied to the metal strip b being removed. Thus, when the winding shaft has a friction structure, even if a large number of spools 14 are attached to the same winding shaft 13, changes in the winding diameter between the spools 14 are absorbed by the slip of the spool 14 with respect to the winding shaft 13. The

In the case where the slitting device is not provided with the loop pits 7 as described above, the disk-shaped cutters of the slitter 2 are not alternately arranged in the upper and lower directions, and the disk-shaped cutters are alternately arranged on the left and right. Can be adopted.
In this case, the metal strip a is changed by the pinch roll 2 in the vertical direction and fed out.

It is a schematic side view which shows one form of the slitting apparatus of the aluminum type metal strip using the spool which concerns on this invention. It is a half cut sectional view showing one form of a spool for winding of an aluminum metal strip concerning the present invention.

Explanation of symbols

a Metal strip b Metal strip 1 Uncoiler 2 Slitter 2a Cutter stand 3, 4 Pinch roll 5 Trim feeder 6 Scrap pit 7 Loop pit 8 Separator 9, 12 Presser roll 11 S-shaped arrangement roll 13 Winding shaft 14 Spool

Claims (4)

A spool for winding an aluminum-based metal strip, characterized in that the outer peripheral surface has a smooth ring shape and is manufactured by die casting using an aluminum alloy. A slitting device for slitting a plurality of narrow metal strips while winding a metal strip made of aluminum or aluminum alloy wound in a coil shape, and winding the slit metal strips into a coil shape. A slitting device, wherein the spool for winding an aluminum metal strip according to claim 1 is used for winding the strip. The slitting apparatus of Claim 2 whose width | variety of the said metal strip is 14-70 mm. The slitting apparatus of Claim 2 or 3 whose thickness of the said metal strip is 0.04-0.1 mm.

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