Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1987-02-17
1989-02-14
Levy, Stuart S.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 741, 164463, 164483, B21C 4702, B22D 1100
Patent
active
048041530
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a method and apparatus for withdrawing long-sized or elongated objects, particularly a method and apparatus by which a fine metal wire, for example, obtained by injecting molten metal through a nozzle and quenching it for solidification, is withdrawn by winding the wire.
BACKGROUND ART
It is known to melt a metal or alloy and inject it as a fine stream into a rotating cooling liquid to thereby produce a fine wire. This method is called "In-Rotating-Water Spinning Method" and is disclosed, for example, in Japanese Patent Application Laying-Open No. 64948/1980.
In the "In-Rotating-Water Spinning Method" mentioned above, since a fine wire can be obtained directly from a molten state, a fine wire of even a hard-to-work material can be easily obtained without requiring so much energy.
However, the "In-Rotating-Water Spinning Method" has presented the problem that the fine wire centrifugally retained in the inner peripheral surface of the rotating drum, is very difficult to withdraw from the drum with a satisfactory efficiency. For example, to collect the fine metal wire while continuously operating the rotating liquid medium spinning apparatus, it is necessary to grip the end of the fine wire or a portion thereof adjacent its end, but generally such gripping has been difficult since it is moving at more than several meters per second. Therefore, it has been common practice to take out the fine wire after the rotation of the rotating drum is stopped.
On the other hand, it has generally been also difficult for the same reason to withdraw during operation such a long-sized object as a metal tape quenched for solidification by a roll quenching method.
In addition, a method which utilizes magnetic force for withdrawing a non-crystalline quenched tape while the latter is being continuously produced is disclosed in Japanese Patent Application Laying-Open No. 94453/1982, which suggests that the non-crystalline tape after being solidified, be continuously wound on a magnetized winding drum by magnetically attracting said tape.
However, the aforesaid suggested method presents the problem that the elongated objects to be withdrawn are limited to magnetic materials.
SUMMARY OF THE INVENTION
Thus, the invention is intended to provide a method and apparatus which makes it possible to efficiently and reliably withdraw elongated objects regardless of whether they are made of magnetic or non-magnetic materials.
The method of withdrawing elongated objects according to the invention uses a means in which, with an elongated object passing between a winding peripheral surface which is rotating magnetically and a effective holder element magnetically attracted to said winding peripheral surface, the holder element is magnetically attracted to the winding peripheral surface to thereby fix a portion of the elongated object to the winding peripheral surface, whereupon, with said fixed portion of the elongated object used as the winding starting end, the elongated object is wound on the winding peripheral surface.
In addition, to magnetically attract the holder element to the winding peripheral surface, as described above, either the holder element or the winding peripheral surface is formed as a magnet and the other is formed of a ferromagnetic material.
In a method of withdrawing elongated objects according to a preferred embodiment of the invention, an elongated object placed on the inner peripheral surface of a rotating cylindrical drum and running with the rotation of said drum, is wound on the winding peripheral surface of a winding reel having an axis which is disposed at a position within the drum and off its center, said axis is extending in parallel to the axis of the drum and rotating in the same direction as the drum, for withdrawing the elongated object. Such withdrawing method comprises as its first step, preparing a holder element adapted to be magnetically attracted to the winding peripheral surface; at its second step, placing the holder element on the inner peripheral su
REFERENCES:
patent: 4617993 (1986-10-01), Tsubata et al.
Nishio Masanobu
Sawada Kazuo
Yamauchi Kazuhisa
Yosimura Saburo
duBois Steven M.
Fasse W. G.
Kane, Jr. D. H.
Levy Stuart S.
Sumitomo Electric Industries Ltd.
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